Equity-Based Compensation (Schedule of Compensation Cost By Award Type) (Details) - USD ($) $ in Thousands	12 Months Ended
Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award
Total compensation cost before income taxes	$ 6,464	$ 5,804	$ 4,582
Income tax benefit	1,024	1,136	1,567
Stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award
Total compensation cost before income taxes	2,594	2,617	3,045
Performance-based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award
Total compensation cost before income taxes	2,048	1,650	978
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award
Total compensation cost before income taxes	480	480	480
Stock options
Share-based Compensation Arrangement by Share-based Payment Award
Total compensation cost before income taxes	0	0	5
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award
Total compensation cost before income taxes	$ 1,342	$ 1,057	$ 74

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Amount of cost expensed and capitalized for award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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