Earnings Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2011	Jan. 01, 2011
Earnings Per Common Share [Abstract]
Net income	$ 15,539	$ 13,289
Weighted average common shares outstanding (in shares)	15,681	15,305
Dilutive potential common shares (in shares)	151	221
Total diluted weighted shares outstanding (in shares)	15,832	15,526
Earnings per share:
Basic (in dollars per share)	$ 0.99	$ 0.87
Diluted (in dollars per share)	$ 0.98	$ 0.86
Anti-dilutive stock options (in shares)	500,000	800,000