Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Apr. 30, 2015	Jul. 31, 2014
Current assets:
Cash and cash equivalents	$ 119,835	$ 114,540
Accounts receivable, net of allowance for doubtful accounts of $1,230 and $800 as of April 30, 2015 and July 31, 2014, respectively	101,994	106,436
Inventory	145,251	124,777
Refundable and deferred income taxes	21,346	18,599
Other current assets	9,264	9,422
Total current assets	397,690	373,774
Property, plant, and equipment, net	107,746	114,165
Intangible assets, net	51,738	57,366
Goodwill	57,358	56,955
Deferred income taxes	5,280	7,475
Other assets	4,724	4,607
Total assets	624,536	614,342
Current liabilities:
Accounts payable	37,219	37,241
Accrued employee compensation and benefits	20,654	16,305
Accrued warranty	7,247	5,968
Accrued restructuring charges	799	3,431
Deferred revenue	7,633	10,761
Customer deposits	3,854	3,046
Other current liabilities	5,666	7,761
Total current liabilities	83,072	84,513
Long-term liabilities:
Accrued income taxes	2,223	5,211
Deferred income taxes	2,862	2,657
Other long-term liabilities	11,857	9,381
Total long-term liabilities	16,942	17,249
Guarantees, commitments and contingencies (Note 16)
Stockholders' equity:
Common stock, $0.05 par value; 30,000,000 shares authorized and 12,442,615 shares issued and outstanding as of April 30, 2015; 30,000,000 shares authorized and 12,372,992 shares issued and outstanding as of July 31, 2014	621	619
Capital in excess of par value	138,809	125,679
Retained earnings	388,356	378,477
Accumulated other comprehensive (loss) income	(3,264)	7,805
Total stockholders' equity	524,522	512,580
Total liabilities and stockholders' equity	$ 624,536	$ 614,342