Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2015	Oct. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 1,376	$ 3,654
Adjustments to reconcile net income to net cash provided by operating activities:
(Benefit from) provision for deferred income taxes	(71)	603
Depreciation and amortization	5,648	5,651
Share-based compensation expense	2,382	2,592
Provision for excess and obsolete inventory	615	1,213
Excess tax benefit from share-based compensation	(68)	(180)
Provision for doubtful accounts, net of recovery	16	35
Gain on sale of property, plant and equipment		(35)
Net changes in operating assets and liabilities, exclusive of acquisition-related assets and liabilities:
Accounts receivable	25,401	19,554
Inventory	(12,794)	(13,485)
Other current assets	(2,239)	(620)
Accounts payable	2,250	(3,171)
Accrued liabilities	(7,453)	(791)
Deferred revenue	(54)	(1,884)
Customer deposits	(12)	(81)
Accrued income taxes	(1,604)	627
Other liabilities	298	328
NET CASH PROVIDED BY OPERATING ACTIVITIES	13,691	14,010
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property, plant, and equipment	(2,820)	(2,665)
Acquisition of businesses, net of cash acquired		(1,600)
Purchases of marketable securities in Rabbi Trust under the Non-qualified Deferred Compensation Plan		(200)
Proceeds from the sale of property, plant, and equipment		127
NET CASH USED IN INVESTING ACTIVITIES	(2,820)	(4,338)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of stock pursuant to exercise of stock options, employee stock purchase plan, restricted stock plans, and non-employee director stock plan	1,194	152
Repurchase of common stock	(3,608)	(3,682)
Shares repurchased for taxes for vested employee restricted stock grants	(618)	(1,605)
Excess tax benefit from share-based compensation	68	180
Dividends paid to shareholders	(1,244)	(1,384)
NET CASH USED IN FINANCING ACTIVITIES	(4,208)	(6,339)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	43	(1,430)
NET INCREASE IN CASH AND CASH EQUIVALENTS	6,706	1,903
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	123,800	114,540
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 130,506	$ 116,443