Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Sep. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate total of shares authorized	64,000,000	64,000,000
Stock expense related to non-vested awards not yet recognized	$ 2,025
Stock expense related to non-vested awards expected to be recognized over a weighted average period, in years	10 months 24 days
Weighted average per share fair value of stock options granted, dollar per share	$ 12.16	$ 14.32	$ 10.25
Weighted average remaining contractual term of options outstanding, in years	4 years 3 months 18 days
Aggregate intrinsic value of options outstanding	$ 3,494
Weighted average remaining contractual term of options eligible for exercise, in years	2 years 7 months 6 days
Aggregate intrinsic value of options eligible for exercise	$ 3,459
Total intrinsic value of stock options exercised	$ 2,484	$ 5,838	$ 6,237
Vesting period of options granted, in years	3 years
Period of payroll deductions for funding of employee purchases of company stock (in months)	6 months
Percentage of the lower of the market price at which employees can purchase company stock	85.00%
Period at which purchase price is measured at lower of market price, in months	6 months
Minimum period to hold employee purchased common stock	18 months
Number of employee stock purchased issued, Shares	16,000	16,000	20,000
Weighted average shares price, dollar per share	$ 58.96	$ 53.01	$ 37.68
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of options granted, in years	5 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of options granted, in years	7 years
2011 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in the number of shares that can be issued			1,300,000
Aggregate total of shares authorized			2,300,000
Shares available for future grant under stock plan, Shares	972,000
2012 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance under plan	688,000
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock expense related to non-vested awards not yet recognized	$ 3,093
Stock expense related to non-vested awards expected to be recognized over a weighted average period, in years	10 months 24 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock expense related to non-vested awards not yet recognized	$ 21
Vesting period of options granted, in years			3 years
Restricted Stock [Member] | Directors And Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of options granted, in years	1 year