Income Taxes - Income Tax Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Current provision:
Federal	$ 0	$ 0
State	57	80
Foreign	16	45
Total current provision	73	125
Benefit provision:
Federal	87	(1,398)
State	(535)	(288)
Foreign	0	0
Total deferred benefit	(448)	(1,686)
Total income tax benefit	$ (375)	$ (1,561)