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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) | 12 Months Ended
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Dec. 31, 2017
ACCUMULATED OTHER COMPREHENSIVE LOSS [Abstract] |
Components of accumulated other comprehensive loss | The components of accumulated other comprehensive loss as of December 31, 2017, 2016 and 2015 are summarized below:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Foreign currency translation adjustment |  | $ | (16,537 | ) |  | $ | (28,976 | ) |  | $ | (19,305 | )
Unrealized holding gain on available-for-sale |  |  |  |  |  |  |  |  |  |  |  |
securities, net of taxes of $85, $263 and $265 as of |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2017, 2016 and 2015 |  |  | 145 |  |  |  | 424 |  |  |  | 434 |
Unfunded SERP liability, net of taxes of ($1,635), ($1,398) |  |  |  |  |  |  |  |  |  |  |  |
and ($1,327) as of December 31, 2017, 2016 and 2015 |  |  | (3,233 | ) |  |  | (2,745 | ) |  |  | (3,005 | )
Accumulated other comprehensive loss |  | $ | (19,625 | ) |  | $ | (31,297 | ) |  | $ | (21,876 | )
Changes in accumulated other comprehensive (loss) income by component | Changes in accumulated other comprehensive (loss) income by component during the years ended December 31, 2017 and 2016 are as follows. All amounts are net of tax.
|  |  |  |  | Unrealized Holding |  |  |  |  |  |  |  |
|  | Foreign Currency |  |  | Gains on |  |  |  |  |  |  |  |
|  | Translation |  |  | Available-for- |  |  | Unfunded |  |  |  |  |
|  | Adjustment |  |  | Sale Securities |  |  | SERP Liability |  |  |  | Total |
Balance at January 1, 2016 |  | $ | (19,305 | ) |  | $ | 434 |  |  | $ | (3,005 | ) |  |  | $ | (21,876 | )
Other comprehensive income (loss) before reclassifications |  |  | (9,671 | ) |  |  | (10 | ) |  |  | 5 |  |  |  |  | (9,676 | )
Amounts reclassified from accumulated other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
comprehensive income (loss) |  |  | - |  |  |  | - |  |  |  | 255 |  | (a) |  |  | 255 |
Net current period other comprehensive income (loss) |  |  | (9,671 | ) |  |  | (10 | ) |  |  | 260 |  |  |  |  | (9,421 | )
Balance at December 31, 2016 |  |  | (28,976 | ) |  |  | 424 |  |  |  | (2,745 | ) |  |  |  | (31,297 | )
Other comprehensive income (loss) before reclassifications |  |  | 12,439 |  |  |  | (279 | ) |  |  | (733 | ) |  |  |  | 11,427 |
Amounts reclassified from accumulated other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
comprehensive income (loss) |  |  | - |  |  |  | - |  |  |  | 245 |  | (a) |  |  | 245 |
Net current period other comprehensive income (loss) |  |  | 12,439 |  |  |  | (279 | ) |  |  | (488 | ) |  |  |  | 11,672 |
Balance at December 31, 2017 |  | $ | (16,537 | ) |  | $ | 145 |  |  | $ | (3,233 | ) |  |  | $ | (19,625 | )
(a) | This reclassification relates to the amortization of prior service costs and gains/losses associated with the Company's SERP plan. This expense is allocated between cost of sales and selling, general and administrative expense based upon the employment classification of the plan participants.

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