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FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES - Narrative (Details) $ in Thousands	Dec. 31, 2020 USD ($)	Jan. 01, 2018 USD ($)
Discounted cash flow | Fair Value, Inputs, Level 3 | Annualized EBITDA and probability of achievement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability for contingent consideration	$ 1,100
Discount rate	0.079
ASI
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability for contingent consideration		$ 4,600
ASI | Other Current and Long-term Liabilities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability for contingent consideration	$ 1,100

X

- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 35
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-Name Accounting Standards Codification
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-SubTopic 30
-Section 25
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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