Leases - Supplemental Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 1,873	$ 2,098
Operating cash flows from finance leases	5	9
Financing cash flows from finance leases	86	82
ROU assets obtained in exchange for lease obligations:
Operating leases	$ 567	$ 395