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

9 Months Ended

Sep. 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 September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Cost of sales	$	42	$	50	$	108	$	86
Selling, general and administrative expense	329		341		950		859
Total stock-based compensation expense	$	371	$	391	$	1,058	$	945