CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
OPERATING ACTIVITIES:
Net income	$ 4,026	$ 2,594
Income from discontinued operations		289
Gain on disposal of discontinued operations		924
Income from continuing operations	4,026	1,381
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:
Benefit from deferred income taxes	2,017	515
Depreciation and amortization	4,794	4,334
Allowance for doubtful accounts	325	36
Net (gain) loss on sale of property, plant, and equipment	(2)	21
Share-based compensation expense	2,251	1,782
Excess tax provision for share-based compensation	45	112
Net changes in operating assets and liabilities, net of acquired business (Note 12)	(10,653)	(7,724)
NET CASH PROVIDED BY CONTINUING OPERATIONS FOR OPERATING ACTIVITIES	2,803	457
NET CASH USED FOR DISCONTINUED OPERATIONS FOR OPERATING ACTIVITIES		(335)
NET CASH PROVIDED BY OPERATING ACTIVITIES	2,803	122
INVESTING ACTIVITIES:
Proceeds from sale of discontinued operations, net		10,467
Additions to property, plant, and equipment	(6,815)	(3,700)
Proceeds from the sale of property, plant, and equipment		22
NET CASH (USED FOR) PROVIDED BY INVESTING ACTIVITIES	(6,815)	6,789
FINANCING ACTIVITIES:
Issuance of stock pursuant to exercise of stock options, employee stock purchase plan, restricted stock plans, and non-employee director stock plan	(20)	(22)
Excess tax provision for share-based compensation	(45)	(112)
Purchase of common stock	(11,808)
Dividends paid to shareholders	(1,337)	(1,308)
NET CASH USED FOR FINANCING ACTIVITIES	(13,210)	(1,442)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(1,328)	1,106
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(18,550)	6,575
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	169,656	169,254
CASH AND CASH EQUIVALENTS, END OF PERIOD	151,106	175,829
Supplemental disclosures of cash flow information:
Cash paid for income taxes, net	$ (13)	$ (2,487)