FAIR VALUE MEASUREMENTS - Fair Value of Financial Assets and Liabilities (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022
Quoted Price in Active Markets For Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets remeasured	$ 0	$ 0
Liabilities remeasured	0	0
Fair Value, Measurements, Recurring
Assets:
Fair value of other non-current assets	26,324,000	22,296,000
Fair value of financial assets, Total	28,272,000	24,950,000
Liabilities:
Fair value of other current liabilities		18,579,000
Fair value of financial liabilities, Total	25,906,000	38,446,000
Fair Value, Measurements, Recurring \| NQDC Plan liability
Liabilities:
Fair value of other current liabilities	1,948,000	2,654,000
Fair value of other non-current liabilities	23,958,000	19,867,000
Fair Value, Measurements, Recurring \| Contingent consideration
Liabilities:
Fair value of other current liabilities		15,925,000
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2)
Assets:
Fair value of other non-current assets	26,324,000	22,296,000
Fair value of financial assets, Total	28,272,000	24,950,000
Liabilities:
Fair value of other current liabilities		2,654,000
Fair value of financial liabilities, Total	25,906,000	22,521,000
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| NQDC Plan liability
Liabilities:
Fair value of other current liabilities	1,948,000	2,654,000
Fair value of other non-current liabilities	23,958,000	19,867,000
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2) \| Contingent consideration
Liabilities:
Fair value of other current liabilities		0
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Assets:
Fair value of other non-current assets	0	0
Fair value of financial assets, Total	0	0
Liabilities:
Fair value of other current liabilities		15,925,000
Fair value of financial liabilities, Total	0	15,925,000
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3) \| NQDC Plan liability
Liabilities:
Fair value of other current liabilities	0	0
Fair value of other non-current liabilities	0	0
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3) \| Contingent consideration
Liabilities:
Fair value of other current liabilities		15,925,000
Fair Value, Measurements, Recurring \| NQDC Plan assets
Assets:
Fair value of other current assets	1,948,000	2,654,000
Fair value of other non-current assets	23,958,000	19,867,000
Fair Value, Measurements, Recurring \| NQDC Plan assets \| Significant Other Observable Inputs (Level 2)
Assets:
Fair value of other current assets	1,948,000	2,654,000
Fair value of other non-current assets	23,958,000	19,867,000
Fair Value, Measurements, Recurring \| NQDC Plan assets \| Significant Unobservable Inputs (Level 3)
Assets:
Fair value of other current assets	0	0
Fair value of other non-current assets	0	0
Fair Value, Measurements, Recurring \| Restricted Investments
Assets:
Fair value of other non-current assets	2,366,000	2,429,000
Fair Value, Measurements, Recurring \| Restricted Investments \| Significant Other Observable Inputs (Level 2)
Assets:
Fair value of other non-current assets	2,366,000	2,429,000
Fair Value, Measurements, Recurring \| Restricted Investments \| Significant Unobservable Inputs (Level 3)
Assets:
Fair value of other non-current assets	$ 0	$ 0

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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