FAIR VALUE MEASUREMENTS - Carrying Amounts and Estimated Fair Values of Significant Financial Instrument that were not Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Dec. 13, 2022	Oct. 03, 2022	Jun. 08, 2021
Workforce Solutions Group, Inc.
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liability					$ 15,000
Mint
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liability				$ 10,000
HireUp
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liability			$ 8,000
Level 2 | Carrying Amount | Workforce Solutions Group, Inc.
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liability	$ 7,500	$ 7,500
Level 2 | Carrying Amount | Mint
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liability	10,000	10,000
Level 2 | Carrying Amount | HireUp
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liability	8,000	8,000
Level 2 | Fair Value | Workforce Solutions Group, Inc.
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liability	7,500	7,500
Level 2 | Fair Value | Mint
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liability	10,000	10,000
Level 2 | Fair Value | HireUp
Fair Value, Option, Quantitative Disclosures [Line Items]
Earnout liability	8,000	8,000
Level 2 | Senior Secured Asset-Based Loan | Carrying Amount
Fair Value, Option, Quantitative Disclosures [Line Items]
Senior Secured Asset-Based Loan	66,400	76,800
Level 2 | Senior Secured Asset-Based Loan | Fair Value
Fair Value, Option, Quantitative Disclosures [Line Items]
Senior Secured Asset-Based Loan	66,400	76,800
Level 2 | Term Loan | Carrying Amount
Fair Value, Option, Quantitative Disclosures [Line Items]
Note payable, fair value	73,875	73,875
Level 2 | Term Loan | Fair Value
Fair Value, Option, Quantitative Disclosures [Line Items]
Note payable, fair value	$ 72,610	$ 71,221