STOCKHOLDERS' EQUITY (Tables)

9 Months Ended

Sep. 30, 2022

Share-based Payment Arrangement [Abstract]

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity

Information with respect to the Company’s non-vested restricted stock units for the nine months ended September 30, 2022 was as follows:

	Number of Restricted Stock Units	Weighted- Average Grant-Date Fair Value	Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)	Shares Retained to Cover Statutory Minimum Withholding Taxes
Non-vested at January 1, 2022	1,061,834	$16.60			—
Granted	534,419	32.35			—
Vested	(578,107)	15.20			(209,848)
Forfeited	(122,887)	19.01			—
Outstanding at September 30, 2022	895,259	$26.58	0.98	$20,815

Information with respect to the Company’s non-vested performance-based restricted stock units for the nine months ended September 30, 2022 was as follows:

	Number of Performance-based Restricted Stock Units	Weighted- Average Grant-Date Fair Value	Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)	Shares Retained to Cover Statutory Minimum Withholding Taxes
Non-vested at January 1, 2022	579,364	$13.20			—
Granted	296,405	22.69			—
Vested	(454,804)	10.19			(200,208)
Forfeited	(64,964)	24.72			—
Non-vested at September 30, 2022	356,001	$22.85	0.94	$8,277

Share-based Payment Arrangement, Expensed and Capitalized, Amount

tock-based compensation expense by award type for the three and nine months ended September 30, 2022 and 2021 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Share-based compensation expense by type:
Time-based Restricted Stock Units	$	2,892	$	2,507	$	8,272	$	7,528
Performance-based Restricted Stock Units	1,007		977		2,598		2,599
ESPP	48		30		144		89
Total share-based compensation expense	$	3,947	$	3,514	$	11,014	$	10,216

Stock-based compensation was included in the following captions in the Company’s condensed consolidated statements of operations for the three and nine months ended September 30, 2022 and 2021 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Cost of revenues	$	588	$	443	$	1,603	$	1,361
Research and development expenses	498		340		1,363		1,270
Marketing and selling expenses	743		639		2,141		1,858
General and administrative expenses	2,118		2,092		5,907		5,727
Total share-based compensation expense	$	3,947	$	3,514	$	11,014	$	10,216