Quarterly Results Of Operations (Tables)

12 Months Ended

Sep. 30, 2012

Quarterly Results Of Operations [Abstract]

Schedule Of Quarterly Financial Information

	2012 Quarters
	First	Second	Third	Fourth	2012
Revenues	$ 157,456	$ 181,486	$ 194,093	$ 184,159	$ 717,194
Gross profit	20,378	34,237	43,843	41,480	139,938
Net income (loss)	(1,745)	7,411	12,138	11,853	29,657
Basic earnings (loss) per share	(0.15)	0.63	1.03	0.99	2.50
Diluted earnings (loss) per share	(0.15)	0.63	1.02	0.99	2.49
	2011 Quarters
	First	Second	Third	Fourth	2011
Revenues	$ 124,674	$ 125,111	$ 141,369	$ 171,243	$ 562,397
Gross profit	25,865	24,877	21,864	27,324	99,930
Net income (loss)	2,432	1,733	73	(6,953)	(2,715)
Basic earnings (loss) per share	0.21	0.15	0.01	(0.59)	(0.23)
Diluted earnings (loss) per share	0.21	0.15	0.01	(0.59)	(0.23)