Income Taxes - Income Tax Expense (Benefit) Summary (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Current, Federal		$ (1,358)	$ (31)
Current, State	$ (325)	911	605
Current, Mexico		2,616	2,396
Total Current	(325)	2,169	2,970
Deferred, Federal	(546)	5,113	(21,190)
Deferred, State	1,260	788	79
Deferred, Mexico		(210)	954
Total Deferred	714	5,691	(20,156)
Income Tax Expense (Benefit), Total	$ 389	$ 7,860	$ (17,187)