Stock-Based Compensation - Components of Stock-Based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Total stock-based compensation expense	$ 574	$ 233	$ 1,389
Tax benefit of stock-based compensation expense	0	0	0
After-tax effect of stock based compensation	574	233	1,389
Stock options
Total stock-based compensation expense	0	0	120
Restricted stock units
Total stock-based compensation expense	$ 574	$ 233	$ 1,269