Leases - Supplemental Cash Flows (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 6,451	$ 6,134
Operating cash flows from finance leases	23	35
Financing cash flows from finance leases	237	273
ROU assets obtained in exchange for lease obligations:
Operating leases	$ 1,758	$ 8,170