Income Taxes (Narrative) (Detail) - USD ($)	12 Months Ended
	Sep. 27, 2016	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2012
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards		$ 1,915,000	$ 5,726,000
Operating loss carry-forwards utilization limit				$ 160,000
General business tax credits	$ 654,000	$ 654,000
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration year	2025
General business tax credits expiration year	2034
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration year	2035
General business tax credits expiration year	2036