Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 3,361	$ 22,608
Adjustments to reconcile net income to net cash provided by operating activities:
(Benefit from) provision for deferred income taxes	(2,681)	3,271
Depreciation and amortization	17,157	17,406
Share-based compensation expense	7,144	8,408
Provision for excess and obsolete inventory	3,271	3,706
Excess tax benefit from share-based compensation	(300)	(981)
Change in fair value of contingent consideration		(62)
Provision for doubtful accounts, net of recovery	67	430
Gain on sale of property, plant and equipment		(101)
Net changes in operating assets and liabilities, exclusive of acquisition-related assets and liabilities:
Accounts receivable	23,518	1,133
Inventory	(24,160)	(25,680)
Other current assets	(2,194)	(303)
Accounts payable	2,006	(497)
Accrued liabilities	11,573	1,532
Deferred revenue	(743)	(3,004)
Customer deposits	(85)	827
Accrued income taxes	(3,839)	(5,178)
Other liabilities	796	2,630
NET CASH PROVIDED BY OPERATING ACTIVITIES	34,891	26,145
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property, plant, and equipment	(9,664)	(7,193)
Acquisition of businesses, net of cash acquired	(8,026)	(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	66	264
NET CASH USED IN INVESTING ACTIVITIES	(17,624)	(8,729)
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	3,397	7,417
Repurchase of common stock	(11,793)	(10,242)
Shares repurchased for taxes for vested employee restricted stock grants	(1,774)	(1,731)
Excess tax benefit from share-based compensation	300	981
Dividends paid to shareholders	(3,726)	(3,868)
Cash paid for financing cost	(499)
NET CASH USED IN FINANCING ACTIVITIES	(14,095)	(7,443)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	1,152	(4,678)
NET INCREASE IN CASH AND CASH EQUIVALENTS	4,324	5,295
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	123,800	114,540
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 128,124	$ 119,835