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Income Taxes Reconciliation of Changes in Tax Positions (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Unrecognized Tax Benefits $ 0 $ 624 $ 98
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions 0 276 526
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions 0 0 0
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations 0 (98)  
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities 0 (802) 0
Unrecognized Tax Benefits $ 0 $ 0 $ 624