Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (1,609)	$ 13,484
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
(Benefit from) provision for deferred income taxes	(2,319)	2,740
Depreciation and amortization	11,281	11,461
Share-based compensation expense	4,209	5,015
Provision for excess and obsolete inventory	1,943	2,992
Excess tax benefit from share-based compensation	(220)	(446)
Change in fair value of contingent consideration		(62)
Provision for doubtful accounts, net of recovery	(32)	193
Gain on sale of property, plant and equipment	(12)	(111)
Net changes in operating assets and liabilities, exclusive of acquisition-related assets and liabilities:
Accounts receivable	22,945	9,221
Inventory	(20,074)	(14,629)
Other current assets	(1,720)	(515)
Accounts payable	(1,394)	(7,022)
Accrued liabilities	9,866	(1,841)
Deferred revenue	(686)	(2,344)
Customer deposits	11	816
Accrued income taxes	(3,566)	182
Other liabilities	226	176
NET CASH PROVIDED BY OPERATING ACTIVITIES	18,849	19,310
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property, plant, and equipment	(4,521)	(4,866)
Acquisition of businesses, net of cash acquired	(8,048)	(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	60	220
NET CASH USED IN INVESTING ACTIVITIES	(12,509)	(6,446)
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	2,294	3,588
Repurchase of common stock	(7,236)	(6,961)
Shares repurchased for taxes for vested employee restricted stock grants	(1,708)	(1,661)
Excess tax benefit from share-based compensation	220	446
Dividends paid to shareholders	(2,487)	(2,624)
Cash paid for financing cost	(458)
NET CASH USED IN FINANCING ACTIVITIES	(9,375)	(7,212)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	(698)	(4,029)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(3,733)	1,623
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	123,800	114,540
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 120,067	$ 116,163