CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Cash flows from operating activities
Net income	$ 11,185	$ 9,576
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,937	1,760
Amortization	2,626	2,267
Stock-based compensation expense	1,148	958
Amortization of debt issuance costs	82	89
Loss on disposal of fixed assets	125	41
Deferred income taxes	991	515
Excess tax benefits from stock-based compensation	(2,596)	(913)
Changes in assets and liabilities, net of assets acquired and liabilities assumed:
Accounts receivable	(4,921)	(788)
Inventories	(1,209)	(833)
Prepaid expenses and other current assets	(1,363)	(2,073)
Accounts payable and other current liabilities	(2,587)	(6,329)
Income taxes	5,333	5,100
Net cash provided by operating activities	10,751	9,370
Cash flows from investing activities
Capital expenditures	(2,182)	(1,170)
Proceeds from disposal of fixed assets	3
Other, net	(296)	(70)
Net cash used in investing activities	(2,475)	(1,240)
Cash flows from financing activities
Repayments under term loan facility	(2,500)	(2,500)
Repayments under revolving credit facility	(10,500)	(7,500)
Proceeds from exercises of stock options	114	173
Excess tax benefits from stock-based compensation	2,596	913
Purchases of treasury stock	(3,619)	(1,578)
Net cash used in financing activities	(13,909)	(10,492)
Effect of exchange rate changes on cash and cash equivalents	10	42
Decrease in cash and cash equivalents	(5,623)	(2,320)
Cash and cash equivalents at beginning of period	34,076	30,186
Cash and cash equivalents at end of period	$ 28,453	$ 27,866