Equity (Deficit) (Tables)

12 Months Ended

Dec. 31, 2020

Equity And Distributions [Line Items]

Summary of Changes in Number of Outstanding Common Units and Shares of Common Stock

The following table summarizes the changes in the number of outstanding common units and shares of common stock:

	Common Shares
Balance, December 31, 2018		22,181,881
Issuance of common stock		—
Restricted stock units vested		412,938
Repurchase of common shares (1)		(120,163	)
Common stock repurchased and retired under share repurchase program		(169,400	)
Balance, June 30, 2019		22,305,256
Restricted stock units vested		38,181
Repurchase of common shares (1)		(9,427	)
Balance, August 5, 2019		22,334,010
Ratio to convert Amplify shares		0.933
Common stock issued to Legacy Amplify stockholders		20,837,633
Midstates stock outstanding and acquired with the Merger		20,415,005
Treasury shares acquired from the Merger		205,861
Restricted stock units vested		682,552
Repurchase of common shares (1)		(31,697	)
Common stock repurchased and retired under share repurchase program		(4,195,247	)
Cancelation and retirement of shares		(347,567	)
Balance, December 31, 2019		37,566,540
Issuance of common stock		—
Restricted stock units vested		132,237
Repurchase of common shares (1)		(35,268	)
Balance, December 31, 2020		37,663,509

(1) Represents the net settlement on vesting of restricted stock necessary to satisfy the minimum statutory tax withholding requirements.

Warrants [Member]

Equity And Distributions [Line Items]

Summary of Assumptions used to Estimate the Fair Value

The fair values for the warrants upon issuance on the Effective Date have been estimated using the Black-Scholes option pricing model using the following assumptions:

	Warrants Issued in
	Successor Period
Risk-free interest rate		2.06	%
Dividend yield		—
Expected life (in years)		5.0
Expected volatility		50.0	%
Strike Price	$	42.60
Calculated fair value	$	2.20