ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accumulated Other Comprehensive Income
Balances			$ 72,286
Balances	$ 86,704		86,704
Total
Accumulated Other Comprehensive Income
Balances	(8,447)	$ (9,036)	(12,003)	$ (9,877)
Unrealized loss on cash flow hedges	(34)	39	(417)	(145)
Amounts reclassified from AOCI	79	27	239	89
Foreign currency translation gain	1,829	383	5,608	1,346
Balances	(6,573)	(8,587)	(6,573)	(8,587)
Defined Benefit Plan Liability
Accumulated Other Comprehensive Income
Balances	(822)	(688)	(822)	(688)
Balances	(822)	(688)	(822)	(688)
Cash Flow Hedges
Accumulated Other Comprehensive Income
Balances	(253)	(149)	(30)	(27)
Unrealized loss on cash flow hedges	(34)	39	(417)	(145)
Amounts reclassified from AOCI	79	27	239	89
Balances	(208)	(83)	(208)	(83)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income
Balances	(7,372)	(8,199)	(11,151)	(9,162)
Foreign currency translation gain	1,829	383	5,608	1,346
Balances	$ (5,543)	$ (7,816)	$ (5,543)	$ (7,816)

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income of accumulated gain (loss) realized from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's deferred hedging gain (loss).

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Amount after tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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