Summary of Significant Accounting Policies (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014	Dec. 28, 2014
Significant Accounting Policies Disclosure [Line Items]
Fiscal year duration			364 days		364 days
First quarter duration	91 days	91 days	273 days	273 days
Minimum
Significant Accounting Policies Disclosure [Line Items]
Fiscal year duration			364 days
Maximum
Significant Accounting Policies Disclosure [Line Items]
Fiscal year duration			371 days
Herley
Significant Accounting Policies Disclosure [Line Items]
Ownership percentage	100.00%		100.00%