Leases - Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets, net of amortization	$ 17,480	$ 18,874
Financing lease right-of-use assets, net of amortization	12,097	12,858
Total assets	29,577	31,732
Current portion of operating lease liabilities	4,777	4,989
Current portion of financing lease liabilities	2,878	3,901
Total current	7,655	8,890
Operating lease liabilities	13,512	14,537
Financing lease liabilities	8,680	8,376
Total noncurrent	22,192	22,913
Total liabilities	29,847	31,803
Operating lease, right-of-use asset, accumulated amortization	10,000	9,000
Finance lease, right-of-use asset, accumulated amortization	$ 5,100	$ 6,400