0001213900-21-037334 | S-4/A | XBRL Viewer | Amplitude Healthcare Acquisition Corp

Document And Entity Information	3 Months Ended
Document And Entity Information	Mar. 31, 2021
Document Information Line Items
Entity Registrant Name	Amplitude Healthcare Acquisition Corp
Document Type	S-4/A
Amendment Flag	true
Amendment Description	Amendment No. 1
Entity Central Index Key	0001788028
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Incorporation, State or Country Code	DE

Restatement of Previously Issued Financial Statements (Details) - Schedule of restatement of previously issued balance sheet - USD ($)	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Nov. 22, 2019
Restatement of Previously Issued Financial Statements (Details) - Schedule of restatement of previously issued balance sheet [Line Items]
Numbers of Class A common stock subject to redemption	$ 7,936,156	$ 8,197,787	$ 8,383,907	$ 8,727,112	$ 8,584,227	$ 8,619,840

Restatement of Previously Issued Financial Statements (Details) - Schedule of restatement of previously issued statement of operations - USD ($)	3 Months Ended				4 Months Ended	5 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2019	Jun. 30, 2020	Sep. 30, 2020	Dec. 31, 2020
Restatement of Previously Issued Financial Statements (Details) - Schedule of restatement of previously issued statement of operations [Line Items]
Transaction costs allocated to warrant liability					$ (238,423)	$ 238,423	$ (238,423)
Weighted average shares outstanding of Class A redeemable common stock (in Shares)		10,000,000	10,000,000	10,000,000	10,000,000			10,000,000	10,000,000	10,000,000
Weighted average shares outstanding of Class B non-redeemable common stock (in Shares)		2,500,000	2,500,000	2,500,000	2,500,000			2,500,000	2,500,000	2,500,000
Statement of Cash Flows for the period from August 19, 2019 (inception) to December 31, 2019 (audited)
Initial classification of Class A common stock subject to possible redemption (in Shares)						86,198,400
Change in value of Class A common stock subject to possible redemption	$ 5,498,080			$ 1,428,850		$ (356,130)	$ (356,130)			$ (6,480,710)

Restatement of Previously Issued Financial Statements (Details) - Schedule of restatement of previously issued statement of cash flows - USD ($)	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2020	Jun. 30, 2020	Sep. 30, 2020	Dec. 31, 2020
Restatement of Previously Issued Financial Statements (Details) - Schedule of restatement of previously issued statement of cash flows [Line Items]
Change in fair value of warrant liability	$ (1,390,000)	$ 1,760,000	$ (3,420,000)	$ (5,890,000)
Change in value of Class A common stock subject to possible redemption	$ 1,428,850	$ (2,003,200)	$ (3,864,400)	$ (6,480,710)

Summary of Significant Accounting Policies (Details) - Schedule of basic and diluted net income (loss) per common share - USD ($)	3 Months Ended		5 Months Ended	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Numerator: Earnings allocable to Redeemable Class A Common Stock
Interest Income			$ 154,572	$ 383,150
Denominator: Weighted Average Redeemable Class A Common Stock
Redeemable Class A Common Stock, Basic and Diluted			10,000,000	10,000,000
Earnings/Basic and Diluted Redeemable Class A Common Stock			0.01	0.01
Numerator: Net (Loss) Income minus Redeemable Net Earnings
Redeemable Net Earnings		$ (217,348)	(61,037)	(144,649)
Non-Redeemable Net Loss	$ 5,498,071	1,211,334	(535,343)	(6,625,350)
Denominator: Weighted Average Non-Redeemable Class B Common Stock
Non-Redeemable Class B Common Stock, Basic and Diluted	$ 2,500,000	$ 2,500,000	$ 2,500,000	$ 2,500,000

Warrant Liability (Details)	3 Months Ended
Warrant Liability (Details)	Mar. 31, 2021
Warrant Liability (Details) [Line Items]
Description of warrants for redemption	Once the warrants become exercisable, the Company may redeem the Public Warrants: • in whole and not in part; • at a price of $0.01 per warrant; • upon not less than 30 days’ prior written notice of redemption to each warrant holder; and • if, and only if, the reported last sale price of the Company’s Class A common stock equals or exceeds $18.00 per share for any 20 trading days within a 30-trading day period ending three business days before the Company sends the notice of redemption to each warrant holder.

Income Tax (Details) - Schedule of net deferred tax assets - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Deferred tax asset
Organizational costs/Startup expenses	$ 166,813	$ 12,389

Fair Value Measurements (Details) - Schedule of changes in the fair value of Level 3 warrant liabilities - USD ($)	3 Months Ended	5 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2019	Dec. 31, 2020
Fair Value Measurements (Details) - Schedule of changes in the fair value of Level 3 warrant liabilities [Line Items]
Initial measurement on November 22, 2019		$ 6,880,000
Change in fair value	$ (2,560,000)	$ 360,000	$ 1,890,000
Transfer to Level 1			$ (3,250,000)

Summary of Significant Accounting Policies (Details) - Schedule of basic and diluted net income (loss) per common share - USD ($)	3 Months Ended		5 Months Ended	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2020
Denominator: Weighted Average Redeemable Class A Common Stock
Redeemable Class A Common Stock, Basic and Diluted (in Shares)	10,000,000	10,000,000
Numerator: Net Income minus Redeemable Net Earnings
Redeemable Net Earnings		$ (217,348)	$ (61,037)	$ (144,649)
Non-Redeemable Net Income	$ 5,498,071	1,211,334	(535,343)	(6,625,350)
Denominator: Weighted Average Non-Redeemable B Common Stock
Non-Redeemable Class B Common Stock, Basic and Diluted	$ 2,500,000	$ 2,500,000	$ 2,500,000	$ 2,500,000

Fair Value Measurements (Details) - Schedule of measured at fair value on a recurring basis - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Liabilities:
Warrant liability	$ 3,320,000	$ 5,880,000

Fair Value Measurements (Details) - Schedule of changes in the fair value of Level 3 warrant liabilities - USD ($)	3 Months Ended	5 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2019	Dec. 31, 2020
Schedule of changes in the fair value of Level 3 warrant liabilities [Abstract]
Fair value as of January 1, 2021	$ 5,880,000
Change in fair value	(2,560,000)	$ 360,000	$ 1,890,000
Fair value as of March 31, 2021	$ 3,320,000		$ 5,880,000

Label	Element	Value
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	$ 64
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	6,480,646
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	6,480,710
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	(56)
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	(5,498,024)
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	(5,498,080)
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	(15)
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	(1,428,835)
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption
ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	amhc_ChangeInValueOfClassACommonStockSubjectToPossibleRedemption	$ (1,428,850)
SharesSubjectToPossibleRedemption	amhc_SharesSubjectToPossibleRedemption	7,936,156
SharesSubjectToPossibleRedemption	amhc_SharesSubjectToPossibleRedemption	8,584,227
SharesSubjectToPossibleRedemption	amhc_SharesSubjectToPossibleRedemption	8,485,964
CashWithdrawnFromTrustAccountToPayForTaxes	amhc_CashWithdrawnFromTrustAccountToPayForTaxes
CashWithdrawnFromTrustAccountToPayForTaxes	amhc_CashWithdrawnFromTrustAccountToPayForTaxes	100,000,000
CashWithdrawnFromTrustAccountToPayForFranchiseTaxes	amhc_CashWithdrawnFromTrustAccountToPayForFranchiseTaxes	198,343
CashWithdrawnFromTrustAccountToPayForFranchiseTaxes	amhc_CashWithdrawnFromTrustAccountToPayForFranchiseTaxes
CashWithdrawnFromTrustAccountToPayForFranchiseTaxes	amhc_CashWithdrawnFromTrustAccountToPayForFranchiseTaxes	138,241
CashWithdrawnFromTrustAccountToPayForFranchiseTaxes	amhc_CashWithdrawnFromTrustAccountToPayForFranchiseTaxes	77,310
DeferredUnderwritingFeesPayable	amhc_DeferredUnderwritingFeesPayable	3,500,000
DeferredUnderwritingFeesPayable	amhc_DeferredUnderwritingFeesPayable	3,500,000
DeferredUnderwritingFeesPayable	amhc_DeferredUnderwritingFeesPayable	$ 3,500,000
StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares	amhc_StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares	648,071
StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares	amhc_StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares
StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares	amhc_StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares	(549,808)
StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares	amhc_StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares
StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares	amhc_StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares	(142,885)
StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares	amhc_StockDuringPeriodForCommonStockSubjectToPossibleRedemptionShares
NetEarnings	amhc_NetEarnings	$ 144,649
NetEarnings	amhc_NetEarnings	$ 61,037
CommonStockSubjectToForfeiture	amhc_CommonStockSubjectToForfeiture	375,000
CommonStockSubjectToForfeiture	amhc_CommonStockSubjectToForfeiture	375,000
CommonStockSubjectToForfeiture	amhc_CommonStockSubjectToForfeiture	11,091
CommonStockSubjectToForfeiture	amhc_CommonStockSubjectToForfeiture	11,091
InterestEarnedOnMarketableSecuritiesHeldInTrustAccount	amhc_InterestEarnedOnMarketableSecuritiesHeldInTrustAccount	$ 383,150
InterestEarnedOnMarketableSecuritiesHeldInTrustAccount	amhc_InterestEarnedOnMarketableSecuritiesHeldInTrustAccount	154,572
InterestEarnedOnMarketableSecuritiesHeldInTrustAccount	amhc_InterestEarnedOnMarketableSecuritiesHeldInTrustAccount	2,473
InterestEarnedOnMarketableSecuritiesHeldInTrustAccount	amhc_InterestEarnedOnMarketableSecuritiesHeldInTrustAccount	325,348
TransactionCostAllocatedToWarrantLiability	amhc_TransactionCostAllocatedToWarrantLiability
TransactionCostAllocatedToWarrantLiability	amhc_TransactionCostAllocatedToWarrantLiability	238,423
ChangeInFairValueOfWarrantLiability	amhc_ChangeInFairValueOfWarrantLiability	(5,890,000)
ChangeInFairValueOfWarrantLiability	amhc_ChangeInFairValueOfWarrantLiability	(360,000)
ChangeInFairValueOfWarrantLiability	amhc_ChangeInFairValueOfWarrantLiability	5,710,000
ChangeInFairValueOfWarrantLiability	amhc_ChangeInFairValueOfWarrantLiability	1,390,000
NetTangibleAssets	amhc_NetTangibleAssets	5,000,001
NetTangibleAssets	amhc_NetTangibleAssets	5,000,001
RelatedPartyConsultingAgreementsFee	amhc_RelatedPartyConsultingAgreementsFee	600
RelatedPartyConsultingAgreementsFee	amhc_RelatedPartyConsultingAgreementsFee	600
InterestEarnedOnMarketableSecuritieHeldInTrustAccount	amhc_InterestEarnedOnMarketableSecuritieHeldInTrustAccount	383,150
InterestEarnedOnMarketableSecuritieHeldInTrustAccount	amhc_InterestEarnedOnMarketableSecuritieHeldInTrustAccount	154,572
InterestEarnedOnMarketableSecuritieHeldInTrustAccount	amhc_InterestEarnedOnMarketableSecuritieHeldInTrustAccount	2,473
InterestEarnedOnMarketableSecuritieHeldInTrustAccount	amhc_InterestEarnedOnMarketableSecuritieHeldInTrustAccount	325,348
DissolutionExpenses	amhc_DissolutionExpenses	100,000
DissolutionExpenses	amhc_DissolutionExpenses	$ 100,000
CommonStockSubjectToPossibleRedemptions	amhc_CommonStockSubjectToPossibleRedemptions	9,249,156
CommonStockSubjectToPossibleRedemptions	amhc_CommonStockSubjectToPossibleRedemptions	9,308,227
InitialClassificationOfCommonStockSubjectToPossibleRedemption	amhc_InitialClassificationOfCommonStockSubjectToPossibleRedemption
InitialClassificationOfCommonStockSubjectToPossibleRedemption	amhc_InitialClassificationOfCommonStockSubjectToPossibleRedemption	$ 86,198,400
SaleOfUnitsNetOfUnderwritingDiscountAndOfferingCost	amhc_SaleOfUnitsNetOfUnderwritingDiscountAndOfferingCost	10,000,000
SaleOfPrivatePlacementWarrants	amhc_SaleOfPrivatePlacementWarrants
SaleOfPrivatePlacementWarrants	amhc_SaleOfPrivatePlacementWarrants
SaleOfPrivatePlacementWarrants	amhc_SaleOfPrivatePlacementWarrants	933,172
SaleOfPrivatePlacementWarrants	amhc_SaleOfPrivatePlacementWarrants
SaleOfPrivatePlacementWarrants	amhc_SaleOfPrivatePlacementWarrants	933,172
OfferingCostsCharged	amhc_OfferingCostsCharged	5,706,349
OfferingCostsCharged	amhc_OfferingCostsCharged	5,944,772
OfferingCostsCharged	amhc_OfferingCostsCharged	$ 238,423
StockIssuedDuringSaleOfPrivatePlacementWarrantsShares	amhc_StockIssuedDuringSaleOfPrivatePlacementWarrantsShares
StockIssuedDuringSaleOfPrivatePlacementWarrantsShares	amhc_StockIssuedDuringSaleOfPrivatePlacementWarrantsShares
DeferredUnderwritingFeePayable	amhc_DeferredUnderwritingFeePayable
DeferredUnderwritingFeePayable	amhc_DeferredUnderwritingFeePayable	3,500,000
WarrantLiabilityPublicWarrants	amhc_WarrantLiabilityPublicWarrants	7,250,000
WarrantLiabilityPublicWarrants	amhc_WarrantLiabilityPublicWarrants	4,000,000
WarrantLiabilityPrivatePlacementWarrants	amhc_WarrantLiabilityPrivatePlacementWarrants	5,880,000
WarrantLiabilityPrivatePlacementWarrants	amhc_WarrantLiabilityPrivatePlacementWarrants	3,240,000
PaymentOfOfferingCostThroughPromissoryNote	amhc_PaymentOfOfferingCostThroughPromissoryNote
PaymentOfOfferingCostThroughPromissoryNote	amhc_PaymentOfOfferingCostThroughPromissoryNote	183,876
TransactionCostsAmount	amhc_TransactionCostsAmount	5,944,772
DeferredOffingCostsPaidDirectlyBySponsorInExchangeForIssuanceOfClassBCommonStock	amhc_DeferredOffingCostsPaidDirectlyBySponsorInExchangeForIssuanceOfClassBCommonStock
DeferredOffingCostsPaidDirectlyBySponsorInExchangeForIssuanceOfClassBCommonStock	amhc_DeferredOffingCostsPaidDirectlyBySponsorInExchangeForIssuanceOfClassBCommonStock	25,000
ChargedToStockholdersEquity	amhc_ChargedToStockholdersEquity	5,706,349
DeferredTaxAsset	amhc_DeferredTaxAsset	211,000
DeferredTaxAsset	amhc_DeferredTaxAsset	167,000
RedeemableNetEarning	amhc_RedeemableNetEarning	217,525
BusinessCombinationOfWorkingCapital	amhc_BusinessCombinationOfWorkingCapital	1,500,000
BusinessCombinationOfWorkingCapital	amhc_BusinessCombinationOfWorkingCapital	$ 1,500,000
StockIssuedDuringPeriodSharesNewIssue	amhc_StockIssuedDuringPeriodSharesNewIssue	375,000
FranchiseAndIncomeTaxObligationsPaid	amhc_FranchiseAndIncomeTaxObligationsPaid	$ 138,241
FranchiseAndIncomeTaxObligationsPaid	amhc_FranchiseAndIncomeTaxObligationsPaid	77,310
IncomeTaxExpenseBenefits	amhc_IncomeTaxExpenseBenefits	$ 0
AggregateSharesOfCommonStock	amhc_AggregateSharesOfCommonStock	10,000,000