Shareholders’ Equity (Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	$ (59,480)
Unrealized gains (losses), net of tax effects of $90 and $116 in 2016 and 2015	151	$ (94)
Total other comprehensive income (loss)	851	(2,679)
Accumulated other comprehensive income (loss) balance, end of period	(58,629)	(57,931)
Investments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	1,297	2,252
Unrealized gains (losses), net of tax effects of $90 and $116 in 2016 and 2015	151	205
Reclassification adjustments for losses (gains) included in other income (expense)	0	(299)
Total other comprehensive income (loss)	151	(94)
Accumulated other comprehensive income (loss) balance, end of period	1,448	2,158
Accumulated Other Comprehensive Income (Loss), Tax [Abstract]
Unrealized gains (losses), tax effects	90	116
Reclassification adjustments for losses (gains) included in other income (expense), tax effects	0	(1)
Foreign currency translation
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(60,777)	(57,504)
Translation adjustments	700	(2,585)
Total other comprehensive income (loss)	700	(2,585)
Accumulated other comprehensive income (loss) balance, end of period	$ (60,077)	$ (60,089)