Earnings Per Share - Reconciliation of Amounts Utilized in Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 03, 2020	Jul. 04, 2020	Apr. 04, 2020	Jan. 04, 2020	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Oct. 03, 2020	Sep. 28, 2019	Sep. 29, 2018
Earnings Per Share [Abstract]
Net income	$ 37,705	$ 35,842	$ 12,926	$ 31,006	$ 36,831	$ 24,801	$ 24,758	$ 22,226	$ 117,479	$ 108,616	$ 13,040
Basic weighted average common shares outstanding (in shares)									29,195	30,271	33,003
Dilutive effect of share-based awards and options outstanding (in shares)									721	803	916
Diluted weighted average shares outstanding (in shares)									29,916	31,074	33,919
Earnings per share:
Basic (in dollars per share)	$ 1.29	$ 1.23	$ 0.44	$ 1.06	$ 1.26	$ 0.83	$ 0.81	$ 0.71	$ 4.02	$ 3.59	$ 0.40
Diluted (in dollars per share)	$ 1.26	$ 1.20	$ 0.43	$ 1.03	$ 1.23	$ 0.81	$ 0.79	$ 0.69	$ 3.93	$ 3.50	$ 0.38