Earnings Per Share (Tables)

6 Months Ended

Mar. 31, 2015

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,
	2015		2014		2015		2014
Numerator:
Net earnings	$	43,855	$	44,798	$	87,639	$	68,181
Denominator:
Basic shares outstanding		65,159		66,633		65,242		67,182
Dilutive effect of stock options and restricted stock		1,381		1,272		1,399		1,281
Diluted shares outstanding		66,540		67,905		66,641		68,463
Income per common share:
Basic earnings per share	$	0.67	$	0.67	$	1.34	$	1.01
Diluted earnings per share	$	0.66	$	0.66	$	1.32	$	1.00

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

	Three-Months Ended				Six-Months Ended
	March 31,				March 31,
	2015		2014		2015		2014
Options		698		720		701		244
Weighted-average option price	$	46.55	$	41.02	$	46.54	$	41.08

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,
	2015		2014		2015		2014
Weighted-average treasury stock shares held for deferred compensation obligations		202		225		201		228