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

6 Months Ended

Jun. 30, 2018

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,
	2018		2017		2018		2017
Cost of sales	$	14	$	17	$	66	$	36
Selling, general and administrative expense	188		180		621		518
Total stock-based compensation expense	$	202	$	197	$	687	$	554