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Accumulated Other Comprehensive Income (Loss) (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2016
USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Beginning balance $ (25,290)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]  
Other comprehensive gain before reclassifications 2,759
Amounts reclassified from accumulated other comprehensive income 187
Net current-period other comprehensive gain 2,946
Ending balance (22,344)
Accumulated Translation Adjustment [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Beginning balance (24,988)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]  
Other comprehensive gain before reclassifications 2,429
Amounts reclassified from accumulated other comprehensive income 0
Net current-period other comprehensive gain 2,429
Ending balance (22,559)
Accumulated Net Unrealized Investment Gain (Loss) [Member]  
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]  
Beginning balance (302)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]  
Other comprehensive gain before reclassifications 330
Amounts reclassified from accumulated other comprehensive income 187
Net current-period other comprehensive gain 517
Ending balance $ 215