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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

6 Months Ended

Jun. 30, 2019

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, 2018, net of tax		$	10			$	(16,198	)		$	(46	)		$	(16,234	)
Other comprehensive gain before reclassification			151				—				9				160
Reclassification to net income ⁽¹⁾			—				1,269				—				1,269			Selling, general and administrative, research and development, and cost of sales
Change during period			151				1,269				9				1,429
Balance June 30, 2019, net of tax		$	161			$	(14,929	)		$	(37	)		$	(14,805	)

		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			171				—				(2	)			169
Reclassification to net income ⁽¹⁾			—				844				—				844			Selling, general and administrative, research and development, and cost of sales
Change during period			171				844				(2	)			1,013
Balance June 30, 2018, net of tax		$	(87	)		$	(10,325	)		$	(39	)		$	(10,451	)

(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 $1.3 million and $844,000 for the six months ended June 30, 2019 and 2018, respectively.

(2)	Refer to Note 14: Supplemental Executive Retirement Plan.