Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Operating Leases
Operating lease ROU assets, net	$ 14,347	$ 17,104
Operating lease liabilities, current	3,868	3,793
Operating lease liabilities, non-current	11,255	14,156
Total operating lease liabilities	15,123	17,949
Finance Leases
Finance lease ROU assets, net	412	568
Finance lease liabilities, current	175	200
Finance lease liabilities, non-current	282	413
Total finance lease liabilities	$ 457	$ 613
Operating ROU assets, net, statement of financial position, extensible list	Other noncurrent assets	Other noncurrent assets
Finance ROU assets, net, statement of financial position, extensible list	Property, plant and equipment, net	Property, plant and equipment, net
Operating lease liabilities, current, statement of financial position, extensible list	Other accrued liabilities	Other accrued liabilities
Finance lease liabilities, current, statement of financial position, extensible list	Current maturities of long-term debt	Current maturities of long-term debt
Operating lease liabilities, noncurrent, statement of financial position, extensible list	Other noncurrent liabilities	Other noncurrent liabilities
Finance lease liabilities, noncurrent, statement of financial position, extensible list	Long-term debt, net of current maturities	Long-term debt, net of current maturities