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Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total debt	$ 215,854	$ 220,216
Less: Current portion	(18,988)	(10,678)
Long-term debt, net of current portion	196,866	209,538
Senior credit facility
Debt Instrument [Line Items]
Total debt	128,522	120,312
Senior credit facility | Senior Secured Term Loan
Debt Instrument [Line Items]
Unamortized debt issuance costs	300	300
Total debt	80,388	89,745
Other
Debt Instrument [Line Items]
Total debt	$ 6,944	$ 10,159

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