Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017
Cash flows from operating activities
Net income	$ 74,153	$ 54,381
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	12,816	10,922
Amortization	12,892	11,930
Stock-based compensation expense	7,033	6,983
Deferred income taxes	(7,499)	(97)
Other non-cash items, net	586	519
Changes in assets and liabilities, net of effects of business acquisitions:
Accounts receivable	892	(13,108)
Inventories	(9,791)	(2,334)
Prepaid expenses and other assets	(7,256)	(2,924)
Accounts payable and other liabilities	13,859	9,220
Income taxes	(7,682)	(2,108)
Net cash provided by operating activities	90,003	73,384
Cash flows from investing activities
Capital expenditures	(23,772)	(20,765)
Proceeds from disposal of fixed assets	0	43
Acquisition of businesses, net of cash acquired	(84,595)	(69,998)
Other, net	0	344
Net cash used in investing activities	(108,367)	(90,376)
Cash flows from financing activities
Borrowings under revolving credit facility	82,300	74,000
Repayments under revolving credit facility	(39,300)	(45,000)
Dividends paid	(3,546)	(2,921)
Purchases of treasury stock	(6,216)	(6,387)
Net cash provided by financing activities	33,238	19,692
Effect of exchange rate changes on cash and cash equivalents	458	(194)
Increase in cash and cash equivalents	15,332	2,506
Cash and cash equivalents at beginning of period	36,584	28,367
Cash and cash equivalents at end of period	$ 51,916	$ 30,873