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Income Taxes (Schedule of Unrecognized Tax Benefits Roll Forward) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Balance at beginning of period $ 12,629 $ 14,466
Settlements   (1,180)
Lapse of statute of limitations (1,014) (657)
Increase for prior year positions 275  
Balance at end of period $ 11,890 $ 12,629