Leases - Lease Balances within the Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets:
Operating lease right-of-use assets	$ 18,678	$ 19,826
Liabilities:
Other accrued liabilities	5,802	4,903
Long-term operating lease obligations	13,284	15,639
Total lease liabilities	$ 19,086	$ 20,542
Lease liability location within the Consolidated Balance Sheets	us-gaap:OtherAccruedLiabilitiesCurrent