Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Allocation of Total Stock-based Compensation

Stock-based compensation expense consisted of the following during the three and six months ended June 30, 2020 and 2019 (in thousands):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Equity awards	$	2,772	$	1,512	$	5,778	$	3,869
Liability awards		842		640		294		1,606
Total stock-based compensation expense	$	3,614	$	2,152	$	6,072	$	5,475

Schedule of Restricted Stock, Restricted Stock Unit, Performance Unit, Cash Settled Restricted Stock Unit and Cash Settled Performance Unit Activity

The following table presents restricted stock, restricted stock unit, performance-based restricted stock unit and cash-settled performance unit activity during the six months ended June 30, 2020 (shares in thousands):

		Weighted
		Average
		Grant Date
		Fair Value
	Shares	Per Share
Non-vested awards, December 31, 2019	2,022	$	10.25
Granted	1,412		9.47
Vested	(358)		9.45
Canceled	(59)		10.18
Non-vested awards, June 30, 2020 (1)	3,017		9.98

(1) Non-vested awards as of June 30, 2020 are comprised of 529,000 cash-settled restricted stock units and cash-settled performance units and 2,488,000 restricted stock and stock-settled performance units.