Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Sep. 24, 2019	Sep. 25, 2018	Sep. 26, 2017	Sep. 27, 2016	Sep. 30, 2015	Sep. 30, 2012
Operating Loss Carryforwards [Line Items]
Net operating loss carry forwards	$ 3,694,000	$ 4,538,000	$ 10,229,000
Operating loss carry-forwards utilization limit						$ 160,000
General business tax credits	$ 3,065,000	$ 3,065,000	$ 3,065,000	$ 3,065,000	$ 3,065,000
U.S. statutory rate	21.00%	28.10%	35.00%
Tax expense from remeasurement of existing deferred tax assets and liabilities	$ 1,300,000
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	2038
General business tax credits expiration year	2039