Leases - Supplemental Cash Flow Information (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 used in finance leases	$ 57	$ 61
Operating cash flows used in operating leases	4,103	3,348
Financing cash flows used in finance leases	846	580
Right-of-use assets obtained in exchange for new finance lease liabilities	60	710
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0	$ 13,241