Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2018	Jul. 31, 2017
Current assets:
Cash and cash equivalents	$ 101,863	$ 129,298
Short-term marketable securities	63,772	18,797
Accounts receivable, net of allowance for doubtful accounts of $507 and $752 as of January 31, 2018 and July 31, 2017, respectively	84,555	77,587
Inventory	127,395	130,575
Income tax receivable	4,192	4,686
Prepaid expenses and other current assets	9,316	9,762
Total current assets	391,093	370,705
Long-term marketable securities	36,625	26,171
Property, plant, and equipment, net	100,399	102,676
Intangible assets, net	23,287	25,925
Goodwill	2,344	2,344
Deferred income taxes	2,558	5,168
Other assets	5,806	5,094
Total assets	562,112	538,083
Current liabilities:
Accounts payable	28,431	27,179
Accrued employee compensation and benefits	16,838	18,171
Accrued income tax	2,092	708
Accrued warranty	5,223	5,306
Accrued restructuring charges	1,093	2,786
Deferred revenue	5,830	4,774
Customer deposits	3,127	3,538
Other current liabilities	4,462	4,648
Total current liabilities	67,096	67,110
Long-term liabilities:
Accrued income taxes, net of current portion	7,093	734
Other long-term liabilities	10,582	9,745
Total long-term liabilities	17,675	10,479
Guarantees, commitments and contingencies (Note 15)
Stockholders’ Equity:
Common stock, $0.05 par value; 30,000,000 shares authorized and 12,493,837 shares issued and outstanding as of January 31, 2018; 30,000,000 shares authorized and 12,467,824 shares issued and outstanding as of July 31, 2017	623	622
Capital in excess of par value	160,428	157,907
Retained earnings	316,836	307,104
Accumulated other comprehensive loss	(546)	(5,139)
Total stockholders’ equity	477,341	460,494
Total liabilities and stockholders’ equity	$ 562,112	$ 538,083