Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost	$ 1,379	$ 1,401
Finance lease cost
Amortization of right-of-use (“ROU”) asset	52	24
Interest expense	13	7
Short-term lease cost	110	143
Variable lease cost	423	455
Total lease cost	$ 1,977	$ 2,030