Shareholders’ Equity (Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	$ (47,695,000)
Unrealized gains (losses), net of tax effects of $0 and $(1,629)	(3,575,000)	2,637,000
Net current period other comprehensive income	(3,600,000)	1,399,000
Accumulated other comprehensive income (loss) balance, end of period	(51,295,000)	(25,141,000)
Accumulated Other Comprehensive Income (Loss), Tax [Abstract]
Unrealized gains (losses), tax effects	0	(1,629)
Reclassification adjustments for losses (gains) included in other income (expense), tax effects	(4)	0
Investments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	6,397,000	26,685,000
Unrealized gains (losses), net of tax effects of $0 and $(1,629)	(1,204,000)	2,637,000
Reclassification adjustments for losses (gains) included in other income (expense)	(2,371,000)	0
Net current period other comprehensive income	(3,575,000)	2,637,000
Accumulated other comprehensive income (loss) balance, end of period	2,822,000	29,322,000
Foreign currency translation
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive income (loss), beginning of period	(54,092,000)	(53,225,000)
Translation adjustments	23,000	(1,238,000)
Reclassification adjustments for losses (gains) included in other income (expense)	(48,000)	0
Net current period other comprehensive income	(25,000)	(1,238,000)
Accumulated other comprehensive income (loss) balance, end of period	$ (54,117,000)	$ (54,463,000)