STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of stock-based compensation expense

The following table reflects stock-based compensation expense recognized in the Company’s Condensed Consolidated Statements of Comprehensive Income for the three and six months ended June 30, 2020 and 2019 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Cost of sales	$	18	$	50	$	41	$	50
Research and development expense	80		76		243		349
Selling, general and administrative expense	2,496		2,508		4,244		4,937
Restructuring charges	999		—		999		—
Total	$	3,593	$	2,634	$	5,527	$	5,336