EARNINGS PER SHARE (Tables)

12 Months Ended

Sep. 30, 2012

EARNINGS PER SHARE [Abstract]

Earnings Per Share

Basic and diluted earnings per share were calculated as follows:

	Year Ended September 30,
	2012		2011		2010
Numerator:
Net income	$	40,826	$	51,662	$	49,458
Denominator:
Weighted-average common shares		22,506,408		22,895,568		23,083,807
(Denominator for basic calculation)
Weighted-average effect of dilutive securities:
Share-based compensation		773,890		539,036		188,772
Diluted weighted-average common shares		23,280,298		23,434,604		23,272,579
(Denominator for diluted calculation)
Earnings per share:
Basic	$	1.81	$	2.26	$	2.14
Diluted	$	1.75	$	2.20	$	2.13