Consolidated Balance Sheets - USD ($) $ in Thousands	Jul. 31, 2017	Jul. 31, 2016
Current assets:
Cash and cash equivalents	$ 129,298	$ 118,697
Short-term marketable securities	18,797
Accounts receivable, net of allowance for doubtful accounts of $752 and $1,070 as of July 31, 2017 and July 31, 2016, respectively	77,587	112,412
Inventory	130,575	145,513
Income tax receivable	4,686	3,004
Prepaid expenses and other current assets	9,762	9,178
Total current assets	370,705	388,804
Long-term marketable securities	26,171
Property, plant, and equipment, net	102,676	107,790
Intangible assets, net	25,925	45,194
Goodwill	2,344	73,915
Deferred income taxes	5,168	10,671
Other assets	5,094	6,523
Total assets	538,083	632,897
Current liabilities:
Accounts payable	27,179	28,575
Accrued employee compensation and benefits	18,171	18,108
Accrued income tax	708	1,610
Accrued warranty	5,306	6,296
Accrued restructuring charges	2,786	5,248
Deferred revenue	4,774	5,359
Customer deposits	3,538	3,476
Contingent consideration		4,534
Other current liabilities	4,648	5,261
Total current liabilities	67,110	78,467
Long-term liabilities:
Accrued income taxes, net of current portion	734	2,174
Contingent consideration, net of current portion		7,705
Other long-term liabilities	9,745	13,374
Total long-term liabilities	10,479	23,253
Guarantees, commitments and contingencies (Note 11)
Stockholders’ Equity:
Common stock, $0.05 par value; 30,000,000 shares authorized and 12,467,824 shares issued and outstanding as of July 31, 2017; 30,000,000 shares authorized and 12,396,765 shares issued and outstanding as of July 31, 2016	622	619
Capital in excess of par value	157,907	149,005
Retained earnings	307,104	390,013
Accumulated other comprehensive loss	(5,139)	(8,460)
Total stockholders’ equity	460,494	531,177
Total liabilities and stockholders’ equity	$ 538,083	$ 632,897