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INCOME TAXES - Reconciliation of Tax Contingencies (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Contingency [Line Items] |  |  |
Balance at beginning of period | $ 9,673 | $ 13,009 | $ 13,162
Additions based on tax positions taken during a prior period | 963 | 219 | 484
Additions based on tax positions taken during the current period | 566 |  |
Reductions based on tax positions taken during a prior period |  |  | (4,295)
Reductions related to a lapse of applicable statute of limitations | (4,575) | (3,555) | (821)
Reductions related to a settlement with taxing authorities | (1,114) |  |
Balance at end of period | $ 5,513 | $ 9,673 | 13,009
Acquisitions [Member] |  |  |
Income Tax Contingency [Line Items] |  |  |
Additions based on tax positions taken during a prior period |  |  | $ 4,479

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- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=123427490&loc=SL37586934-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details
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