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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |  |
Balances | $ 143,056 | $ 119,194
Balances | 153,048 | 121,693
Accumulated Other Comprehensive Income (Loss) |  |
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |  |
Balances | (3,287) | (10,531)
Unrealized gain (loss) on cash flow hedges | 537 | (1,112)
Amounts reclassified from AOCI | 171 | 24
Foreign currency translation gain (loss) | (4,007) | (2,428)
Balances | (6,586) | (14,047)
Defined Benefit Plan Liability |  |
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |  |
Balances | (1,633) | (1,628)
Balances | (1,633) | (1,628)
Cash Flow Hedges |  |
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |  |
Balances | (1,889) | (363)
Unrealized gain (loss) on cash flow hedges | 704 | (1,463)
Amounts reclassified from AOCI | 225 | 31
Balances | (960) | (1,795)
Tax effect of Cash Flow Hedges |  |
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |  |
Balances | 451 | 86
Unrealized loss on cash flow hedges, Tax effect | (167) | 351
Amounts reclassified from AOCI, Tax effect | (54) | (7)
Balances | 230 | 430
Foreign Currency Translation Adjustments |  |
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) |  |
Balances | (216) | (8,626)
Foreign currency translation gain (loss) | (4,007) | (2,428)
Balances | $ (4,223) | $ (11,054)

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- Definition Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32157-110900 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32022-110900 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (a-c) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580 + Details
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