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ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME (Tables) | 9 Months Ended
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Sep. 30, 2019
ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME |
Schedule of accumulated other comprehensive (loss) income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Foreign | ​ | ​ | ​
​ | ​ | Pension | ​ | Currency | ​ | ​ | ​
​ |  | Adjustment |  | Translation |  | Total
Balance at December 31, 2018 | ​ | $ | (15,878) | ​ | $ | (2,868) | ​ | $ | (18,746)
Change during the period: | ​ |  | ​ | ​ |  |  | ​ |  |
Before-tax amount | ​ |  | — | ​ |  | 513 | ​ |  | 513
Adoption of accounting standard (Note 2) | ​ | ​ | (2,732) | ​ | ​ | — | ​ | ​ | (2,732)
Reclassification adjustment, net of taxes: | ​ |  | ​ | ​ |  |  | ​ |  | ​
Amortization of net loss (1) | ​ |  | 520 | ​ |  | — | ​ |  | 520
Total activity for the period | ​ |  | (2,212) | ​ |  | 513 | ​ |  | (1,699)
Balance at September 30, 2019 | ​ | $ | (18,090) | ​ | $ | (2,355) | ​ | $ | (20,445)
(1) | Reported as part of selling, general and administrative expenses.
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Unrealized | ​ | Foreign | ​ | ​ | ​
​ | ​ | Pension | ​ | Gain (Loss) On | ​ | Currency | ​ | ​ | ​
​ |  | Adjustment |  | Securities |  | Translation |  | Total
Balance at December 31, 2017 | ​ | $ | (14,470) | ​ | $ | 15 | ​ | $ | (2,247) | ​ | $ | (16,702)
Change during the period: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Before-tax amount | ​ |  | — | ​ |  | (15) | ​ |  | (29) | ​ |  | (44)
Reclassification adjustment, net of taxes: | ​ |  | ​ | ​ |  | ​ | ​ |  |  | ​ |  | ​
Amortization of net loss (1) | ​ |  | 485 | ​ |  | — | ​ |  | — | ​ |  | 485
Total activity for the period | ​ |  | 485 | ​ |  | (15) | ​ |  | (29) | ​ |  | 441
Balance at September 30, 2018 | ​ | $ | (13,985) | ​ | $ | — | ​ | $ | (2,276) | ​ | $ | (16,261)
(1) | Reported as part of selling, general and administrative expenses.
As of January 1, 2018, the balance related to the cumulative unrealized gain on marketable securities included in accumulated other comprehensive income was reclassed upon adoption of ASU 2016-1, Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ​ In the first quarter of 2019, the Company adopted the provisions of ASU 2018-02, which provides an option to reclassify stranded tax effects within accumulated other comprehensive income/(loss) (AOCI) to retained earnings due to the change in the U.S. federal tax rate as a result of the Tax Cuts and Jobs Act, which took effect in January 2018. Accordingly, the Company elected to reclassify approximately $2.7 million of stranded tax effects related to its pension plan from AOCI to retained earnings.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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