Leases - Schedule of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 423	$ 1,228
Variable lease cost	33	82
Finance lease cost:
Amortization of leased assets	18	54
Interest on lease liabilities	7	23
Sublease income	(21)	(62)
Net lease cost	$ 460	1,325
Operating cash flows from operating leases		557
Leased assets obtained in exchange from new operating lease liabilities		$ 17,674