Income Taxes - Provision for income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal			$ (10)
State	$ 317	$ 148	63
Foreign	17
Total current	334	148	53
Deferred and other:
Federal	(2,146)	(751)	3,708
State	(1,336)	(135)	19
Foreign	(161)	77	190
Total deferred and other	(3,643)	(809)	3,917
Total tax expense (benefit)	$ (3,309)	$ (661)	$ 3,970