Long-term Debt - Summary of Long-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total debt	$ 187,908	$ 183,537
Less: Current portion	(17,789)	(17,778)
Long-term debt	170,119	165,759
Unamortized debt issuance costs	3,200	600
2023 Notes
Debt Instrument [Line Items]
Total debt	32,022	143,242
Unamortized debt issuance costs	347	1,819
Long-term debt, gross	32,369	157,369
2026 Notes
Debt Instrument [Line Items]
Total debt	130,336	0
Long-term debt, gross	135,000
Promissory note
Debt Instrument [Line Items]
Total debt	17,095	17,095
Other debt and finance lease obligations
Debt Instrument [Line Items]
Total debt	4,648	4,792
Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	$ 3,807	$ 18,408

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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