Significant Stock-Based Plan Activity and Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Stock-Based Compensation Expense [Abstract]
Total stock-based compensation expense	$ 835	$ 202	$ 1,253	$ 687
Unrecognized stock-based compensation expense	2,600		$ 2,600
Weighted average remaining vesting period			2 years 50 days
Cost of sales
Stock-Based Compensation Expense [Abstract]
Total stock-based compensation expense	34	14	$ 82	66
Selling, general and administrative expense
Stock-Based Compensation Expense [Abstract]
Total stock-based compensation expense	$ 801	$ 188	$ 1,171	$ 621