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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) | 3 Months Ended
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Mar. 31, 2018
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Loss | Amounts related to the changes in accumulated other comprehensive loss were as follows (in thousands):
|  | Unrealized gain (loss) on available-for-sale-securities |  |  | Net unrealized gain (loss) on retirement plan (2) |  |  | Change in cumulative foreign currency translation adjustment |  |  | Total |  |  | Affected line items in the consolidated statements of operations
Balance December 31, 2017, net of tax |  | $ | (258 | ) |  | $ | (11,169 | ) |  | $ | (37 | ) |  | $ | (11,464 | ) |  |
Other comprehensive gain (loss) before reclassification |  |  | 54 |  |  |  | — |  |  |  | 20 |  |  |  | 74 |  |  |
Reclassification to net income (1) |  |  | — |  |  |  | 422 |  |  |  | — |  |  |  | 422 |  |  | Selling, general and administrative, research and development, and cost of sales
Change during period |  |  | 54 |  |  |  | 422 |  |  |  | 20 |  |  |  | 496 |  |  |
Balance March 31, 2018, net of tax |  | $ | (204 | ) |  | $ | (10,747 | ) |  | $ | (17 | ) |  | $ | (10,968 | ) |  |
|  | Unrealized gain (loss) on available-for-sale-securities |  |  | Net unrealized gain (loss) on retirement plan (2) |  |  | Change in cumulative foreign currency translation adjustment |  |  | Total |  |  | Affected line items in the consolidated statements of operations
Balance December 31, 2016, net of tax |  | $ | (246 | ) |  | $ | (10,355 | ) |  | $ | (65 | ) |  | $ | (10,666 | ) |  |
Other comprehensive (loss) gain before reclassification |  |  | (15 | ) |  |  | — |  |  |  | 30 |  |  |  | 15 |  |  |
Reclassification to net income (1) |  |  | — |  |  |  | 299 |  |  |  | — |  |  |  | 299 |  |  | Selling, general and administrative, research and development, and cost of sales
Change during period |  |  | (15 | ) |  |  | 299 |  |  |  | 30 |  |  |  | 314 |  |  |
Balance March 31, 2017, net of tax |  | $ | (261 | ) |  | $ | (10,056 | ) |  | $ | (35 | ) |  | $ | (10,352 | ) |  |
(1) | The Company reclassified amortization of prior service cost and actuarial loss for its retirement plan from accumulated other comprehensive loss to net income of $422,000 and $299,000 for the three months ended March 31, 2018 and 2017, respectively.
(2) | Refer to Note 12: Supplemental Executive Retirement Plan.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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