Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Schedule of Stock Based Compensation Expense

Stock-based compensation expense was as follows for the three and nine months ended September 30, 2020 and 2019 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Restricted stock units	$	357	$	445	$	1,424	$	3,773
Performance units		535		374		1,226		3,364
Restricted and unrestricted stock		69		242		935		477
Total expense	$	961	$	1,061	$	3,585	$	7,614

Summary of Employee Restricted Stock Unit Awards Activity

A summary of employee restricted stock unit awards activity during the nine months ended September 30, 2020 is as follows:

	Number of units			Weighted average grant date fair value		Aggregate intrinsic value (in thousands)
Total awarded and unvested, December 31, 2019		437,559		$	7.83	$	3,474
Granted		351,467			5.86
Vested		(214,804	)		9.14
Forfeited		(3,023	)		6.02
Total awarded and unvested, September 30, 2020		571,199		$	6.14	$	2,508

Summary of Performance Stock Unit Awards Activity

A summary of performance stock unit awards activity during the nine months ended September 30, 2020 is as follows

	Number of units			Weighted average grant date fair value		Aggregate intrinsic value (in thousands)
Total awarded and unvested, December 31, 2019		320,120		$	11.26	$	2,522
Granted		618,483			6.21
Vested		(51,858	)		20.89
Forfeited		(55,547	)		16.69
Total awarded and unvested, September 30, 2020		831,198		$	6.54	$	932

Performance Units [Member]

Summary of Assumptions to Determine Fair Value for Performance Stock Units Granted

The following table presents the assumptions used to determine the fair value for performance stock units granted during the nine months ended September 30, 2020 and 2019:

	Nine Months Ended September 30,
	2020			2019
Volatility		79.70	%		65.10	%
Risk-free interest rate		0.20	%		1.83	%