Note 3 - Business Combination - Restructuring Charges (Details) - Scenario, Unspecified [Domain] - USD ($)	3 Months Ended			9 Months Ended
	Jun. 27, 2015	Mar. 28, 2015	Dec. 27, 2014	Jun. 27, 2015
Other Restructuring [Member]
Liability
Cash payments
Restructuring charges		$ 237,000
Non-cash charges		$ (237,000)
Equipment Relocation Costs [Member]
Liability	$ 18,000			$ 18,000
Cash payments
Restructuring charges	$ 18,000
Non-cash charges
Employee Severance [Member]
Liability	1,071,000	$ 1,172,000	$ 1,155,000	1,071,000
Cash payments	$ (101,000)	(58,000)	$ (53,000)
Restructuring charges		$ 75,000
Non-cash charges
Facility Closing [Member]
Liability	$ 32,000	$ 17,000		32,000
Cash payments	(312,000)	(4,000)
Restructuring charges	327,000	$ 21,000
Non-cash charges
Liability	1,121,000	$ 1,189,000	$ 1,155,000	1,121,000
Cash payments	(413,000)	(62,000)	$ (53,000)
Restructuring charges	$ 345,000	333,000		$ 678,000
Non-cash charges		$ (237,000)