Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2017	Mar. 25, 2016	Mar. 31, 2017	Mar. 25, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 18,935	$ 14,007	$ 36,317	$ 22,579
Other comprehensive income:
Change in foreign currency translation adjustment	909	(96)	(991)	(61)
Change in unrecognized loss related to pension benefit plans (See Note 7)	326	180	651	360
Total other comprehensive income (loss)	1,235	84	(340)	299
Comprehensive income	$ 20,170	$ 14,091	$ 35,977	$ 22,878

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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