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

	Nine Months Ended		Years Ended July 31,
	April 30, 2005		2004		2003			2002			2001			2000
Earnings:
Income before income taxes	$	92,805	$	70,327	$	32,455		$	43,135		$	44,790		$	76,131
Add back:
Fixed charges less interest capitalized		7,225		2,362		1,301			1,239			1,589			1,786
Less:
Preferred stock dividends and premium on redemption of preferred stock						(262	)		(395	)		(421	)		(418	)
Total earnings	$	100,030	$	72,689	$	33,494		$	43,978		$	45,958		$	77,499
Fixed Charges:
Interest, capitalized and expensed	$	6,304	$	1,231	$	121		$	82		$	418		$	578
Amortization of debt expense		160		61
Interest portion of rent expense		788		1,070		918			761			750			790
Preferred stock dividends and premium on redemption of preferred stock						262			395			421			418
Total Fixed Charges	$	7,252	$	2,362	$	1,301		$	1,239		$	1,589		$	1,786
Ratio of Earnings to Fixed Charges ( 1 )		13.8		30.8		25.7			35.5			28.9			43.4

(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.