Computation of Ratio of Earnings to Fixed Charges	Exhibit 12.1
(Dollars in thousands, except Ratio Data)

	Years Ended July 31,
	2005		2004		2003			2002			2001
Earnings:
Income before income taxes	$	115,418	$	70,327	$	32,455		$	43,135		$	44,790
Add back:
Fixed charges less interest capitalized		9,668		2,362		1,301			1,239			1,589
Less:
Preferred stock dividends and premium on redemption of preferred stock						(262	)		(395	)		(421	)
Total earnings	$	125,086	$	72,689	$	33,494		$	43,978		$	45,958
Fixed Charges:
Interest, capitalized and expensed	$	8,470	$	1,231	$	121		$	82		$	418
Amortization of debt expense		214		61
Interest portion of rent expense		1,051		1,070		918			761			750
Preferred stock dividends and premium on redemption of preferred stock						262			395			421
Total Fixed Charges	$	9,735	$	2,362	$	1,301		$	1,239		$	1,589
Ratio of Earnings to Fixed Charges (1)		12.8		30.8		25.7			35.5			28.9

(1)  The ratio of earnings to fixed charges has been computed by adding income before income taxes and fixed charges less interest capitalized and subtracting preferred stock dividends and premium on redemption of preferred stock to derive total earnings, and dividing total earnings by fixed charges. Fixed charges consist of interest expensed and capitalized, amortization of debt expense, 8.5% of rent expense which is deemed representative of an interest factor and preferred stock dividends and premium on redemption of preferred stock.