Other Non-Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Assets [Abstract]
Pension assets	$ 7,916	$ 6,748
Uncertain Tax Positions	6,931	7,209
Business Acquisition [Line Items]
Debt issuance costs	4,267	5,919
Supplemental Retirement Income Program	2,269	1,961
Other	2,946	2,344
Total other assets	30,959	31,796
Houghton [Member]
Business Acquisition [Line Items]
Indemnification assets	$ 6,630	$ 7,615