Condensed Consolidated Balance Sheets (USD $)	Jan. 31, 2012	Jul. 31, 2011
Current assets:
Cash and cash equivalents	$ 400,216,000	$ 558,804,000
Accounts receivable, net	60,902,000	70,801,000
Inventories, net	75,207,000	74,661,000
Prepaid expenses and other current assets	8,747,000	7,270,000
Deferred tax asset, net	11,892,000	11,529,000
Total current assets	556,964,000	723,065,000
Property, plant and equipment, net	24,515,000	26,638,000
Goodwill	137,354,000	137,354,000
Intangibles with finite lives, net	42,059,000	45,470,000
Deferred financing costs, net	3,326,000	3,823,000
Other assets, net	1,182,000	1,159,000
Total assets	765,400,000	937,509,000
Current liabilities:
Accounts payable	18,668,000	23,501,000
Accrued expenses and other current liabilities	36,427,000	49,858,000
Dividends payable	5,352,000	6,100,000
Customer advances and deposits	8,048,000	11,011,000
Interest payable	1,553,000	1,531,000
Income taxes payable	0	4,056,000
Total current liabilities	70,048,000	96,057,000
Convertible senior notes	200,000,000	200,000,000
Other liabilities	6,306,000	6,360,000
Income taxes payable	3,235,000	3,811,000
Deferred tax liability	1,697,000	2,101,000
Total liabilities	281,286,000	308,329,000
Commitments and contingencies
Stockholders' equity:
Preferred stock, par value $.10 per share; shares authorized and unissued 2,000,000	0	0
Common stock, par value $.10 per share; authorized 100,000,000 shares; issued 28,869,089 shares and 28,731,265 shares at January 31, 2012 and July 31, 2011, respectively	2,887,000	2,873,000
Additional paid-in capital	358,697,000	355,001,000
Retained earnings	400,077,000	393,109,000
Stockholders' equity before treasury stock	761,661,000	750,983,000
Treasury stock, at cost (9,574,737 shares and 4,508,445 shares at January 31, 2012 and July 31, 2011, respectively)	(277,547,000)	(121,803,000)
Total stockholders' equity	484,114,000	629,180,000
Total liabilities and stockholders' equity	$ 765,400,000	$ 937,509,000