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DERIVATIVE INSTRUMENTS (Effect of Derivative Instruments Designated Cash Flow Hedges on Statements of Operations) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Roll Forward] |  |  |
Balance in AOCI Beginning of Year | $ (4,512) | $ 1,871 |
Amount of Gain (Loss) Recognized in AOCI | 11,709 | (3,425) | $ 1,871
Amount of Gain (Loss) Reclassified from AOCI into Earnings | 13,400 | 2,958 |
Balance in AOCI End of Year | (6,203) | (4,512) | 1,871
Interest rate swap | Interest income (expense) | Cash Flow Hedges |  |  |
Derivative Instruments, Gain (Loss) [Roll Forward] |  |  |
Balance in AOCI Beginning of Year | 592 | 1,871 |
Amount of Gain (Loss) Recognized in AOCI | 924 | (1,355) |
Amount of Gain (Loss) Reclassified from AOCI into Earnings | 897 | (76) |
Balance in AOCI End of Year | 619 | 592 | 1,871
Cross-currency swap | Interest income (expense) | Net Investment Hedges |  |  |
Derivative Instruments, Gain (Loss) [Roll Forward] |  |  |
Balance in AOCI Beginning of Year | 0 |  |
Amount of Gain (Loss) Recognized in AOCI | 1,723 |  |
Amount of Gain (Loss) Reclassified from AOCI into Earnings | 2,355 |  |
Balance in AOCI End of Year | (632) | 0 |
Cross-currency swap | Other income (expense) | Cash Flow Hedges |  |  |
Derivative Instruments, Gain (Loss) [Roll Forward] |  |  |
Balance in AOCI Beginning of Year | (5,104) | 0 |
Amount of Gain (Loss) Recognized in AOCI | 9,062 | (2,070) |
Amount of Gain (Loss) Reclassified from AOCI into Earnings | 10,148 | 3,034 |
Balance in AOCI End of Year | $ (6,190) | $ (5,104) | $ 0

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- Definition Accumulated Other Comprehensive Income Loss Cumulative Changes in Net Gain Loss from Cash Flow Hedge Effect Before Tax + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109974929&loc=SL110061190-113977 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580 + Details
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- Definition Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e689-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580 + Details
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