Income Taxes - Components of Provision (Benefit) for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current
State									$ 59	$ 48	$ 42
Foreign									252	203	19
Total Current									311	251	61
Deferred
Federal									(65)	(8)	0
Foreign									(107)	4	0
Total Deferred									(172)	(4)	0
Total income tax provision	$ 38	$ 98	$ (8)	$ 11	$ 204	$ 17	$ 21	$ 5	$ 139	$ 247	$ 61