Lease Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lease, Cost [Abstract]
Operating lease cost	$ 1,012
Short-term lease cost	798
Variable lease cost	65
Total lease cost	1,875
Right-of-use assets obtained in exchange for lease obligations	$ 5,550	$ 0	$ 0