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Summary of Significant Accounting Policies (Recent Accounting Developments) (Details) - USD ($)	12 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2017
Retained Earnings
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 33,000
ASU 2016-09
Tax deficiency from exercise of stock options	$ 600,000
Impact on EPS diluted (USD per share)	$ 0.02
Cumulative Effect of New Accounting Principle in Period of Adoption			$ (19,000)
ASU 2016-09 | Retained Earnings
Cumulative Effect of New Accounting Principle in Period of Adoption			$ 33,000

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Amount of tax benefit from exercise of stock options granted under share-based compensation arrangement.

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Per share amount effect of a restatement of results of operations on diluted earnings per share.

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