Significant Stock-Based Plan Activity and Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-based compensation expense

Stock-based compensation expense was recognized in our Consolidated Statements of Operations as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Cost of sales	$	34	$	14	$	82	$	66
Selling, general and administrative expense	801		188		1,171		621
Total stock-based compensation expense	$	835	$	202	$	1,253	$	687