DEBT - Maturities of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Long-term Debt, Fiscal Year Maturity [Abstract]
Total debt	$ 106,176	$ 58,259
Term Loan \| 2021 Term Loan Credit Agreement
Long-term Debt, Fiscal Year Maturity [Abstract]
2021	250
2022	1,000
2023	1,000
2024	1,000
2025	1,000
Thereafter	95,500
Total debt	99,750	0
Senior Secured Asset-Based Loan \| Senior Secured Asset-Based Loan
Long-term Debt, Fiscal Year Maturity [Abstract]
2021	0
2022	0
2023	0
2024	4,000
2025	0
Thereafter	0
Total debt	4,000	53,408
Note Payable \| Earnout Notes Payable
Long-term Debt, Fiscal Year Maturity [Abstract]
2021	0
2022	2,426
2023	0
2024	0
2025	0
Thereafter	0
Total debt	$ 2,426	$ 4,851

Long-Term Debt, Maturity, After Year Four

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Section 50
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- References

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year.

+ References

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