Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used in finance leases	$ 113	$ 94
Operating cash flows used in operating leases	7,221	7,312
Financing cash flows used in finance leases	2,370	936
Right-of-use assets obtained in exchange for new finance lease liabilities	636	710
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0	$ 9,334