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Stock-Based Compensation (RSU Activity) (Details) - Restricted Stock Units (RSUs) [Member]
6 Months Ended
Jun. 27, 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) 512,861
Granted (shares) 695,944
Vested (shares) (326,861)
Forfeited (shares) (6,250)
Unvested, Ending balance (shares) 875,694
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) | $ / shares $ 3.22
Weighted Average Grant Date Fair Value, Granted (dollars per share) | $ / shares 2.38
Weighted Average Grant Date Fair Value, Vested (dollars per share) | $ / shares 3.92
Weighted Average Grant Date Fair Value, Forfeited (dollars per share) | $ / shares 2.21
Weighted Average Grant Date Fair Value, Ending balance (dollars per share) | $ / shares $ 2.30