Earnings Per Share (Tables)

9 Months Ended

Jun. 30, 2012

Earnings Per Share

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

	Three-Months Ending June 30,				Nine-Months Ending June 30,
	2012		2011		2012		2011
Numerator:
Net earnings	$	28,302	$	36,056	$	95,470	$	90,545
Denominator:
Basic shares outstanding		68,922		68,793		68,973		68,785
Dilutive effect of stock options		1,397		1,373		1,473		1,370
Diluted shares outstanding		70,319		70,166		70,446		70,155
Income per common share:
Basic earnings per share	$	0.41	$	0.52	$	1.38	$	1.32
Diluted earnings per share	$	0.40	$	0.51	$	1.36	$	1.29

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

	Three-Months Ending June  30,				Nine-Months Ending June  30,
	2012		2011		2012		2011
Options		31		678		45		679
Weighted-average option price	$	41.53	$	32.06	$	35.87	$	32.03

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

	Three-Months  Ending June 30,				Nine-Months Ending June  30,
	2012		2011		2012		2011
Weighted-average treasury stock shares held for deferred compensation obligations		284		324		299		340