Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000877890 (http://www.sec.gov/CIK)

Equity [Abstract]	Period [Axis]
	2016-01-01 - 2016-12-31
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income by Component	The changes in Accumulated other comprehensive loss by component, net of tax, are as follows:   Foreign currency   Unrealized loss on available-for-sale securities   Unrealized loss on derivative instruments   Other comprehensive loss on pension liability   Total   (In thousands) Balance at December 31, 2015 $ (16,346 )   $ (2,900 )   $ (2,255 )   $ (7,026 )   $ (28,527 ) Other comprehensive income (loss) before reclassifications —   996   (2,638 )   906   (736 ) Amounts reclassified from accumulated other comprehensive loss —   (1,204 )   1,763   —   559 Net current period other comprehensive (loss) income —   (208 )   (875 )   906   (177 ) Balance at December 31, 2016 $ (16,346 )   $ (3,108 )   $ (3,130 )   $ (6,120 )   $ (28,704 )
Schedule of Reclassification out of Accumulated Other Comprehensive Income	Reclassifications out of Accumulated other comprehensive loss are as follows:     For the Twelve Months Ended December 31, 2016     (In thousands) Details about accumulated other comprehensive loss components   Amount reclassified from Accumulated other comprehensive loss, net of tax   Affected line item in the Consolidated Statements of Income Unrealized net gains on available-for-sale securities   $ (1,204 )   Other expense, net Unrealized net losses on cash flow hedges   1,763   Operating expenses *     $ 559     * Operating expenses amounts allocated to Research and development, Sales, marketing and services, and General and administrative are not individually significant.