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Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Reconciliation of Unrecognized Income Tax Benefits    
Balance at January 1, $ 13,023 $ 912
Additions based on income tax positions related to current year 0 0
Additions for income tax positions of prior years 8 12,318
Deductions for income tax positions of prior years 0 (52)
Statute of limitation expirations (286) (155)
Settlements 0 0
Balance at December 31, $ 12,745 $ 13,023