Accumulated Other Comprehensive Income (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 11,806	[1]
Net current-period other comprehensive income	6,341
Balance	18,147
Foreign Currency Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	14,642
Net current-period other comprehensive income	6,309
Balance	20,951
Unrealized Gain (Losses) On Available-For-Sale Investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	12
Balance	12
Accrued Pension Service Costs [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(2,848)
Net current-period other comprehensive income	32
Balance	$ (2,816)

[1] Certain prior period amounts have been reclassified to conform to the current period presentation (see Note 1 - The Company and Basis of Presentation - Reclassifications)