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INCOME TAXES - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Contingency [Line Items] |  |  |  |
Income tax benefit from change in tax rate | $ 5,700 |  |  |
Change in valuation allowances |  | $ 0 |  |
Reduction of income tax provision due to tax holidays | 1,700 | 1,900 | $ 1,300 |
Unrecognized tax benefits | 23,801 | 23,271 | $ 18,157 | $ 19,150
Income taxes receivable | 44,100 | $ 25,900 |  |
Acquisition Related Net Operating Losses |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Change in valuation allowances | 5,900 |  |  |
CARES Act |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating losses | 4,800 |  |  |
Federal |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating losses | 124,115 |  |  |
Tax credits expected to expire unused | 100 |  |  |
State |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating losses | 9,149 |  |  |
Tax credits expected to expire unused | $ 9,000 |  |  |

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- Definition The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 11.C) -URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330215-122817 + Details
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- Definition Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(8)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(10)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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