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Income Taxes (Schedule of Unrecognized Tax Benefits) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Interest accrued on unrecognized tax benefits $ 44 $ 0  
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Unrecognized tax benefit at beginning of year 515 7,832 $ 7,747
Reductions based on tax positions related to the prior year 0 0 (93)
Unrecognized tax benefit, reductions for tax year 2011 federal audit 0 (7,310) 0
Additions based on tax positions related to the current year 299 0 209
Reductions as a result of a lapse of the applicable statute of limitations 0 (7) (31)
Unrecognized tax benefit at end of year $ 814 $ 515 $ 7,832