Stock-Based Compensation (Narrative) (Details) (USD $)	12 Months Ended			9 Months Ended
	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012	Sep. 28, 2014	Nov. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity award vesting period	4 years
Options expiration period	10 years
Stock-based compensation	$ 2,242,000	$ 1,979,000	$ 2,003,000
Weighted average estimated fair value, options (in dollars per share)	$ 1.99	$ 1.82	$ 1.36
Fair value of unvested stock options	3,100,000
Closing stock price (in dollars per share)	$ 3.20				$ 2.90
The total intrinsic value of options exercised	3,700,000	139,000	343,000
Total cash received from employees as a result of employee stock option exercises	4,500,000	365,000	711,000
Unrecognized stock-based compensation expense	119,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	1,100,000	1,100,000	1,400,000
Weighted average recognition period				2 years 4 months 28 days
Expected dividend	0.00%	0.00%	0.00%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	854,000
Weighted average estimated fair value (in dollars per share)	$ 3.47	$ 3.17
Sales under ESPP (in shares)	947,000
Average price of sales under ESPP (in dollars per share)	$ 3.74
Preferred Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	64,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average recognition period	4 months 18 days
Weighted average estimated fair value (in dollars per share)	$ 0.96	$ 0.71	$ 0.74
Sales under ESPP (in shares)	278,000	357,000	270,000
Average price of sales under ESPP (in dollars per share)	$ 2.76	$ 1.74	$ 1.95
Shares available for issuance (in shares)	877,000
Compensation expense related to ESPP	$ 255,000,000
Expected dividend	0.00%	0.00%	0.00%