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Stock-Based Compensation (RSU Activity) (Details) - Restricted Stock Units (RSUs) [Member]
9 Months Ended
Sep. 26, 2015
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Unvested, Beginning balance (shares) | shares 512,861
Granted (shares) | shares 695,944
Vested (shares) | shares (326,861)
Forfeited (shares) | shares (26,250)
Unvested, Ending balance (shares) | shares 855,694
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Weighted Average Grant Date Fair Value, Beginning balance (dollars per share) $ 3.22
Weighted Average Grant Date Fair Value, Granted (dollars per share) 2.38
Weighted Average Grant Date Fair Value, Vested (dollars per share) 3.92
Weighted Average Grant Date Fair Value, Forfeited (dollars per share) 2.25
Weighted Average Grant Date Fair Value, Ending balance (dollars per share) $ 2.30