Significant Stock-Based Plan Activity and Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Stock-Based Compensation Expense [Abstract]
Total stock-based compensation expense	$ 336	$ 371	$ 1,589	$ 1,058
Unrecognized stock-based compensation expense	1,800		$ 1,800
Weighted average remaining vesting period			2 years
Cost of sales
Stock-Based Compensation Expense [Abstract]
Total stock-based compensation expense	(3)	42	$ 79	108
Selling, general and administrative expense
Stock-Based Compensation Expense [Abstract]
Total stock-based compensation expense	$ 339	$ 329	$ 1,510	$ 950