Leases - Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets, net of amortization	$ 16,204	$ 18,874
Financing lease right-of-use assets, net of amortization	12,289	12,858
Total assets	28,493	31,732
Current portion of operating lease liabilities	4,395	4,989
Current portion of financing lease liabilities	2,085	3,901
Total current	6,480	8,890
Operating lease liabilities	12,687	14,537
Financing lease liabilities	9,890	8,376
Total noncurrent	22,577	22,913
Total liabilities	29,057	31,803
Operating lease, right-of-use asset, accumulated amortization	9,400	9,000
Finance lease, right-of-use asset, accumulated amortization	$ 3,700	$ 6,400