Stockholders' Equity (Details) (USD $)	3 Months Ended
	Mar. 28, 2015	Mar. 29, 2014
Weighted Average Grant Date Fair Value
Stock-based compensation expense	$ 2,909,000	$ 2,570,000
Stock options
Weighted Average Grant Date Fair Value
Dividend yield	0.00%
Expected volatility	47.50%
Risk-free interest rate	1.57%
Expected term (in years)	5 years 6 months 6 days
Stock options | Chief Executive Officer
Weighted Average Grant Date Fair Value
Stock options granted	450,000
Stock-based compensation expense	1,700,000
Equity Incentive Plan | Restricted Stock Units
Units
Beginning balance, restricted stock units	3,250,046
Awards granted	0
Awards vested	(749,259)
Awards canceled	(67,910)
Ending balance, restricted stock units	2,432,877
Weighted Average Grant Date Fair Value
Beginning Balance, Weighted Average Grant Date Fair Value	$ 6.07
Awards granted	$ 0.00
Awards vested	$ 6.94
Awards canceled	$ 6.43
Ending Balance, Weighted Average Grant Date Fair Value	$ 5.79
Total fair value of restricted stock units vested during the period	$ 7,500,000	$ 2,700,000