Other Current Assets and Other Assets - Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Implementation costs for cloud computing arrangements	$ 7,058	$ 4,811
Cash surrender value of company-owned life insurance	4,503	3,973
Finance lease right-of-use assets	2,566	3,016
Deposits	2,182	2,144
Non-trade receivables	1,444	1,274
Other	431	516
Total other assets	$ 18,184	$ 15,734