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Shareholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2015
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
Changes in components of accumulated other comprehensive income (in thousands):

 
 
 
Years Ended December 31,
 
 
 
2015
 
2014
 
2013
Investments
 
 
 
 
 
 
 
Accumulated other comprehensive income (loss), beginning of period
 
$
2,252

 
$
6,397

 
$
26,685

 
Unrealized gains (losses), net of tax effects of $0, $0, and $(54)
 
(562
)
 
(1,774
)
 
2,121

 
Reclassification adjustments for losses (gains) included in other income (expense), net of tax effects of $0, $4, and $(800)
 
(393
)
 
(2,371
)
 
(22,409
)
 
Net current period other comprehensive income
 
(955
)
 
(4,145
)
 
(20,288
)
 
Accumulated other comprehensive income (loss) balance, end of period
 
$
1,297

 
$
2,252

 
$
6,397

Foreign currency translation
 
 
 
 
 
 
 
Accumulated other comprehensive income (loss), beginning of period
 
$
(57,504
)
 
$
(54,092
)
 
$
(53,225
)
 
Translation adjustments
 
(3,009
)
 
(3,364
)
 
(296
)
 
Reclassification adjustments for losses (gains) included in other income (expense)
 
(264
)
 
(48
)
 
(571
)
 
Net current period other comprehensive income
 
(3,273
)
 
(3,412
)
 
(867
)
 
Accumulated other comprehensive loss balance, end of period
 
$
(60,777
)
 
$
(57,504
)
 
$
(54,092
)
Total accumulated other comprehensive income (loss), end of period
 
$
(59,480
)
 
$
(55,252
)
 
$
(47,695
)