Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands			3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost			$ 1,942	$ 1,102
Finance lease cost
Amortization of lease expense	$ 300	$ 300	26	25
Interest on lease liabilities			4	5
Sublease income			(134)	(100)
Total finance lease cost, net			$ 1,838	$ 1,032