Stockholders' Equity - Employee Stock Purchase Plan (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Dec. 25, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued under the plan		781
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized	2,689
Minimum weekly employment threshold to qualify for ESPP	20 hours
Minimum annual employment threshold to qualify for ESPP	5 months
Maximum percentage of employee compensation eligible to purchase shares under ESPP	15.00%
Purchase price of common stock as a percent of fair market value	85.00%
Cumulative number of shares issued under ESPP	1,784
Number of shares available for future issuance	1,924
Average share price of shares issued under the plan		$ 5.19
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Expected life	6 months	6 months	6 months
Risk-free interest rate, lower range	0.10%	0.06%	0.10%
Risk-free interest rate, upper range	0.11%	0.16%	0.19%
Expected volatility, lower range	36.95%	49.70%	28.50%
Expected volatility, upper range	43.70%	65.73%	43.60%
Expected dividend yield	0.00%	0.00%	0.00%
Weighted average grant-date fair value per share (in dollars per share)	$ 1.50	$ 1.93	$ 3.05