CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2012		Jul. 31, 2011		Jul. 31, 2010		Jul. 31, 2009
Cash flows from operating activities of continuing operations:
Net loss	$ (38,108)		$ (34,465)	[1]	$ (23,841)	[1]	$ (199,383)	[1]
Income (loss) from discontinued operations	491		(330)	[1]	(2,318)	[1]	126	[1]
Loss from continuing operations	(38,599)		(34,135)	[1]	(21,523)	[1]	(199,509)	[1]
Adjustments to reconcile loss from continuing operations to net cash provided by (used in) operating activities of continuing operations:
Depreciation	14,057		16,833	[1]	16,918	[1]	20,057	[1]
Impairment of goodwill and long-lived assets	2,062		27,166	[1]	25,800	[1]	164,682	[1]
Amortization of intangible assets	1,279		5,457	[1]	6,308	[1]	5,485	[1]
Share-based payments	2,990		3,481	[1]	4,154	[1]	5,103	[1]
Non-operating losses (gains)	(14,431)		(8,882)	[1]	988	[1]	(820)	[1]
Equity in losses of affiliates and impairments	4,109		4,308	[1]	2,129	[1]	16,565	[1]
Non-cash restructuring charges							389	[1]
Changes in operating assets and liabilities, excluding effects from acquisition:
Trade accounts receivable, net	(9,755)		20,050	[1]	9,607	[1]	33,138	[1]
Inventories	(11,604)		583	[1]	(7,604)	[1]	18,737	[1]
Prepaid expenses and other current assets	(1,591)		3,906	[1]	707	[1]	(390)	[1]
Accounts payable, accrued restructuring and accrued expenses	9,086		(38,511)	[1]	2,307	[1]	(38,976)	[1]
Refundable and accrued income taxes, net	(5,766)		(3,297)	[1]	171	[1]	(168)	[1]
Other assets and liabilities	10,225		(125)	[1]	1,233	[1]	11,689	[1]
Net cash provided by (used in) operating activities of continuing operations	(37,938)		(3,166)	[1]	41,195	[1]	35,982	[1]
Cash flows from investing activities of continuing operations:
Additions to property and equipment	(11,564)		(8,968)	[1]	(9,194)	[1]	(11,060)	[1]
Redemption (purchase) of short-term investments					10,000	[1]	(10,000)	[1]
Investments in affiliates	(2,912)		(3,473)	[1]	(3,402)	[1]	(9,533)	[1]
Proceeds from the sale of available-for-sale securities			115	[1]	1,319	[1]
Proceeds from the sale of equity investments in affiliates	24		238	[1]	1,319	[1]	18,008	[1]
Business acquisitions, net of cash acquired					(29,580)	[1]
Net cash used in investing activities of continuing operations	(14,452)		(12,088)	[1]	(30,857)	[1]	(12,585)	[1]
Cash flows from financing activities of continuing operations:
Payments of dividends			(40,001)	[1]
Repayments on capital lease obligations	(124)		(106)	[1]	(524)	[1]	(408)	[1]
Line of credit origination costs					(782)	[1]
Proceeds from revolving line of credit	10,000
Repayments on revolving line of credit	(10,000)			[1]		[1]		[1]
Proceeds from issuance of common stock	91		204	[1]	331	[1]	113	[1]
Repurchase of common stock	(188)		(1,633)	[1]	(13,521)	[1]	(7,137)	[1]
Net cash used in financing activities of continuing operations	(221)		(41,536)	[1]	(14,496)	[1]	(7,432)	[1]
Cash flows from discontinued operations:
Operating cash flows	(1,501)		(1,713)	[1]	(1,723)	[1]	(2,276)	[1]
Net cash used in discontinued operations	(1,501)		(1,713)	[1]	(1,723)	[1]	(2,276)	[1]
Net effect of exchange rate changes on cash and cash equivalents	(4,744)		8,364	[1]	(1,522)	[1]	(5,507)	[1]
Net increase (decrease) in cash and cash equivalents	(58,856)		(50,139)	[1]	(7,403)	[1]	8,182	[1]
Cash and cash equivalents at beginning of year	111,225	[1]	161,364	[1]	168,767	[1]	160,585	[1]
Cash and cash equivalents at end of year	$ 52,369		$ 111,225	[1]	$ 161,364	[1]	$ 168,767	[1]

[1] As Restated