Valuation and Qualifying Accounts and Reserves

12 Months Ended

Jul. 31, 2011

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts and Reserves

Valuation and Qualifying Accounts and Reserves

Fiscal Years Ended July 31, 2011, 2010 and 2009

Column A	Column B	Column C Additions		Column D	Column E
Description	Balance at beginning of period	Charged to cost and expenses	Charged to other accounts - describe	Transfers (deductions) - describe	Balance at end of period
Allowance for doubtful accounts -
accounts receivable:
Year ended July 31,
2011	$  1,127,000	244,000  (A)	-	(151,000)  (B)	$   1,220,000
2010	1,252,000	219,000  (A)	-	(344,000)  (B)	1,127,000
2009	1,301,000	(864,000) (A)	-	815,000   (B)	1,252,000
Inventory reserves:
Year ended July 31,
2011	$ 13,791,000	4,091,000 (C)	-	(4,566,000) (D)	$ 13,316,000
2010	11,744,000	7,744,000 (C)	-	(5,697,000) (D)	13,791,000
2009	8,201,000	5,692,000 (C)	-	(2,149,000) (D)	11,744,000
Valuation allowance for deferred      tax assets:
Year ended July 31,
2011	$  1,162,000	-	-	-	$  1,162,000
2010	1,212,000	-	-	(50,000) (E)	1,162,000
2009	1,262,000	-	-	(50,000) (E)	1,212,000

(A)Provision for (benefit from) doubtful accounts.

(B)(Write-off) recovery of uncollectible receivables.

(C)Provision for excess and obsolete inventory.

(D)Write-off of inventory.

(E)Change in valuation allowance.