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INCOME TAXES (Summary of Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Tax Disclosure [Abstract] |  |  |
Ending balance—gross unrecognized tax benefits (“UTB”s) | $ 17,496 | $ 18,728 | $ 20,137
Unrecognized tax benefits if recognized, would impact certain deferred tax assets | 16,600 |  |
Unrecognized tax benefits that would impact the annual effective tax rate if recognized | 829 | 2,061 | 3,470
Decrease in provision for income taxes due to reduction of gross unrecognized tax benefits | 1,200 |  |
Accrued interest and penalties | 400 | 400 |
Unrecognized tax benefits |  |  |
Beginning balance-gross unrecognized tax benefits (UTB’s) | 18,728 | 20,137 | 22,694
Lapse of statute of limitations | (1,232) | (1,409) | (2,557)
Ending balance—gross unrecognized tax benefits (“UTB”s) | 17,496 | 18,728 | 20,137
UTB’s as a credit in deferred taxes | (14,604) | (14,604) | (14,604)
Federal benefit of state taxes | $ (2,063) | $ (2,063) | $ (2,063)

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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=84176650&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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