Debt - Summary of debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total debt outstanding	$ 325,389	$ 314,113
Less: Unamortized debt issuance costs	(3,823)	(6,639)
Total debt, net	321,566	307,474
Portion due within one year	34,211	0
Total long-term debt, net	287,355	307,474
Term B Facility
Debt Instrument [Line Items]
Total debt outstanding	271,562	281,563
Term Loan Facility
Debt Instrument [Line Items]
Paid-In-Kind Interest	31,480
Revolving Credit Facility
Debt Instrument [Line Items]
Paid-In-Kind Interest	2,731
Total debt outstanding	15,000	30,000
Union Revolving Credit Facility
Debt Instrument [Line Items]
Total debt outstanding	$ 4,616	$ 2,550

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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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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