Earnings Per Share (Tables)

6 Months Ended

Mar. 31, 2014

Earnings Per Share

Reconciliation of Net Earnings to Net Earnings Per Share Basic and Diluted

	Three-Months Ended				Six-Months Ended
	March 31,				March 31,
	2014		2013		2014		2013
Numerator:
Net earnings	$	44,798	$	42,446	$	68,181	$	69,814
Denominator:
Basic shares outstanding		66,633		68,737		67,182		68,597
Dilutive effect of stock options and restricted stock		1,272		1,198		1,281		1,234
Diluted shares outstanding		67,905		69,935		68,463		69,831
Income per common share:
Basic earnings per share	$	0.67	$	0.62	$	1.01	$	1.02
Diluted earnings per share	$	0.66	$	0.61	$	1.00	$	1.00

Anti-dilutive Stock Options Excluded from Computation of Earnings Per Share

	Three-Months Ended				Six-Months Ended
	March 31,				March 31,
	2014		2013		2014		2013
Options		720		722		244		70
Weighted-average option price	$	41.02	$	34.05	$	41.08	$	37.48

Schedule of Treasury Stock Shares Held for Deferred Compensation Included in Basic and Diluted Shares Outstanding

	Three-Months Ended				Six-Months Ended
	March 31,				March 31,
	2014		2013		2014		2013
Weighted-average treasury stock shares held for deferred compensation obligations		225		266		228		270