Prepaid Expenses and Other Current Assets, and Other Assets (Details) (USD $)	6 Months Ended		3 Months Ended
	Jun. 28, 2014	Dec. 28, 2013	Sep. 27, 2014 Scenario forecast
Prepaid expenses and other current assets
Term loans to employees	$ 1,764,000	$ 1,764,000
Other	14,011,000	10,011,000
Total	15,775,000	11,775,000
Other assets
Forgivable loans to employees and non-employee experts	45,280,000	51,083,000
Other	2,919,000	3,538,000
Total	48,199,000	54,621,000
Prepaid expenses and other assets disclosures
Term of forgivable loans or advances to employees and non-employee experts, minimum	3 years
Term of forgivable loans or advances to employees and non-employee experts, maximum	8 years
Forgivable loans issuable to employees, future employees and non-employee experts for future service	4,100,000	4,966,000
Prepaid Expenses, Other Current Assets, and Other Assets
Forgivable loans issued to future employees for future service	$ 700,000		$ 4,100,000