Leases - Lease Balances within the Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Assets:
Operating lease right-of-use assets	$ 19,098	$ 19,522
Liabilities:
Lease liability location within the Consolidated Balance Sheets	us-gaap:OtherAccruedLiabilitiesCurrent	us-gaap:OtherAccruedLiabilitiesCurrent
Other accrued liabilities	$ 5,067	$ 6,094
Long-term operating lease obligations	13,197	13,681
Total lease liabilities	$ 18,264	$ 19,775