Equity-based Awards (Tables)

12 Months Ended

Dec. 31, 2020

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Amount of Compensation Expense Recognized

The following table summarizes the amount of recognized compensation expense associated with these awards that are reflected in the accompanying statements of operations for the periods presented (in thousands):

	For the Year Ended
	December 31,
	2020		2019
Equity classified awards
TSUs	$	267	$	1,797
PSUs		98		981
Board RSUs		19		264
	$	384	$	3,042

2017 Non-Employee Directors Compensation Plan [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Information Regarding Restricted Stock Unit Awards

The following table summarizes information regarding the Board RSUs granted under the Director Compensation Plan for the period presented:

				Weighted-
				Average Grant
	Number of			Date Fair Value
	Units			per Unit (1)
Board RSUs outstanding at December 31, 2018		39,604		$	11.36
Granted (2)		42,933		$	6.95
Forfeited		—		$	—
Vested		(49,723	)	$	9.54
Board RSUs outstanding at August 5, 2019		32,814		$	8.35
Ratio to convert Board RSUs (3)		0.933
Converted Board RSUs		30,616
Board RSUs outstanding on August 6, 2019 (4)		30,616		$	5.12
Granted		—		$	—
Forfeited		—		$	—
Vested		(14,459	)	$	5.12
Board RSUs outstanding at December 31, 2019		16,157		$	5.12
Granted		—		$	—
Forfeited		—		$	—
Vested		(7,259	)	$	5.12
Board RSUs outstanding at December 31, 2020		8,898		$	5.12

(1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued.

(2) The aggregate grant date fair value of Board RSUs issued for the period from January 1, 2019 through August 5, 2019 was $0.3 million based on a grant date market price of $6.95 per share.

(3) The merger ratio used to convert Legacy Amplify Board RSUs into newly issued Company Board RSUs.

(4) This reflects the unvested Board RSU awards converted into newly issued Board RSUs at August 6, 2019 in which the stock price was at $5.12 per share.

TSUs [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Information Regarding Restricted Stock Unit Awards

The following table summarizes information regarding the TSUs granted under the Legacy Amplify MIP for the period presented:

				Weighted-
				Average Grant
	Number of			Date Fair Value
	Units			per Unit (1)
TSUs outstanding at December 31, 2018		598,024		$	11.35
Granted (2)		300,517		$	6.80
Forfeited		(38,151	)	$	11.13
Vested		(437,834	)	$	8.71
TSUs outstanding at August 5, 2019		422,556		$	10.87
Ratio to convert TSUs (3)		0.933
Converted TSUs		394,245
TSUs outstanding at August 6, 2019 (4)		394,245		$	5.12
Granted (5)		17,500		$	6.14
Forfeited		(38,652	)	$	5.12
Vested		(81,723	)	$	5.12
TSUs outstanding at December 31, 2019		291,370		$	5.18
Granted (6)		43,250		$	3.10
Forfeited		(93,845	)	$	5.12
Vested		(124,978	)	$	5.17
TSUs outstanding at December 31, 2020		115,797		$	4.47

(1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued.

(2) The aggregate grant date fair value of TSUs issued for the period from January 1, 2019 through August 5, 2019 was $2.0 million based on a grant date market price ranging from $4.48 to $8.70 per share.

(3) The merger ratio used to convert Legacy Amplify TSUs into newly issued TSUs.

(4) This reflects the unvested TSUs converted into newly issued Company’s TSUs at August 6, 2019 at a stock price of $5.12 per share.

(5) The aggregate grant date fair value of TSUs issued for the period August 6, 2019 through December 31, 2019 was $0.1 million based on a grant date market price of $6.14 per share.

(6) The aggregate grant date fair value of TSUs issued for the year ended December 31, 2020 was $0.1 million based on a grant date market price ranging from $0.54 to $6.61 per share.

PSUs [Member]

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Information Regarding Restricted Stock Unit Awards

The following table summarizes information regarding the PSUs granted under the Legacy Amplify MIP for the period presented:

				Weighted-
				Average Grant
	Number of			Date Fair Value
	Units			per Unit (1)
PSUs outstanding at December 31, 2018		393,500		$	8.14
Granted (2)		17,750		$	4.06
Forfeited		(22,750	)	$	7.59
Vested		—		$	—
PSUs outstanding at August 5, 2019		388,500		$	7.98
Ratio to convert PSUs (3)		0.933
Converted PSUs		362,471
PSUs outstanding on August 6, 2019 (4)		362,471		$	2.11
Granted (5)		17,500		$	2.87
Forfeited		(74,078	)	$	2.11
Vested		—		$	—
PSUs outstanding at December 31, 2019		305,893		$	2.15
Granted (6)		43,250		$	3.03
Forfeited		(134,589	)	$	2.11
Vested		—		$	—
PSUs outstanding at December 31, 2020		214,554		$	2.36

(1) Determined by dividing the aggregate grant date fair value of awards by the number of awards issued.

(2) The aggregate grant date fair value of PSUs issued for the period January 1, 2019 through August 5, 2019 was less than $0.1 million based on a calculated fair value price ranging from $1.64 to $6.76 per share.

(3) The merger ratio used to convert Legacy Amplify PSUs into newly issued Company PSUs.

(4) This reflects the unvested PSU awards converted into newly issued PSUs at August 6, 2019 based on a calculated fair value price ranging from $1.64 to $2.63 per share.

(5) The aggregate grant date fair value of PSUs issued for the period August 6, 2019 through December 31, 2019 was less than $0.1 million based on a calculated fair value price ranging from $2.38 to $3.40 per share.

(6) The aggregate grant date fair value of PSUs issued for the year ended December 31, 2020 was $0.1 million based on a calculated fair value price ranging from $2.46 to $3.66 per share.

Schedule of Fair Value Assumptions for PSUs

A Monte Carlo simulation was used to determine the fair value of these awards at the grant date.

The assumptions used to estimate the fair value of the PSUs are as follows:

Share price targets	$	12.50		$	15.00		$	17.50
Risk-free interest rate:
Awards Issued on January 1, 2020 and April 1, 2020		1.61	%		1.61	%		1.61	%
Dividend yield
Awards Issued on January 1, 2020 and April 1, 2020		12.1	%		12.1	%		12.1	%
Expected volatility:
Awards Issued on January 1, 2020 and April 1, 2020		60.0	%		60.0	%		60.0	%
Calculated fair value per PSU:
Awards Issued on January 1, 2020 and April 1, 2020	$	3.66		$	2.98		$	2.46

Share price targets	$	12.50		$	15.00		$	17.50
Risk-free interest rate:
Awards Issued on January 1, 2019		2.44	%		2.44	%		2.44	%
Awards Issued on April 1, 2019		2.28	%		2.28	%		2.28	%
Awards Issued on July 1, 2019		1.73	%		1.73	%		1.73	%
Awards Issued on October 1, 2019		1.50	%		1.50	%		1.50	%
Dividend yield		—			—			—
Expected volatility:
Awards Issued on January 1, 2019		54.0	%		54.0	%		54.0	%
Awards Issued on April 1, 2019		50.0	%		50.0	%		50.0	%
Awards Issued on July 1, 2019		57.0	%		57.0	%		57.0	%
Awards Issued on October 1, 2019		65.0	%		65.0	%		65.0	%
Calculated fair value per PSU:
Awards Issued on January 1, 2019	$	6.76		$	5.86		$	5.11
Awards Issued on April 1, 2019	$	4.22		$	3.43		$	2.80
Awards Issued on July 1, 2019	$	2.63		$	2.05		$	1.64
Awards Issued on October 1, 2019	$	3.40		$	2.83		$	2.38