Leases - Supplemental Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash paid for amounts included in measurement of liabilities:
Operating leases	$ 6,430	$ 5,432
Finance leases	2,863	3,066
Right-of-use assets obtained in exchange for new lease liabilities:
Operating leases	31	5,226
Finance leases	0	$ 0
Finance lease, right of use asset, write off	800
Finance lease, liability, write off	600
Operating lease, right of use asset recognized	700
Operating lease liability recognized	$ 500