Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Cash flows from operating activities:
Net income	$ 78,745	$ 50,497
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	8,380	5,405
Amortization of intangible assets	18,215	6,028
Amortization of debt issuance costs	393
Deferred income tax provision (benefit)	(2,297)	2,289
Gain on disposition of property, plant and equipment	(2,188)	(1)
Stock-based compensation expense	2,738	2,279
Excess tax benefits from stock-based awards		(291)
Changes in assets and liabilities (excluding acquisitions):
Accounts receivable	(86,419)	(47,614)
Inventories	(13,258)	(25,255)
Prepaid income taxes, expenses and other	(2,648)	(5,889)
Accounts payable	(1,254)	28,667
Accrued liabilities	(1,966)	2,579
Other liabilities	2,822	198
Net cash provided by operating activities	1,263	18,892
Cash flows from investing activities:
Purchases of property, plant and equipment	(26,164)	(15,922)
Proceeds from dispositions of property, plant and equipment	4,329	40
Proceeds from notes receivable		8,367
Acquisitions	(5,039)
Other	(2,500)
Net cash used in investing activities	(29,374)	(7,515)
Cash flows from financing activities:
Principal payments on revolving credit facility	(20,000)
Regular cash dividends paid		(15,743)
Principal payments on capital lease obligations	(81)	(86)
Excess tax benefits from stock-based awards		291
Net cash used in financing activities	(20,081)	(15,538)
Net decrease in cash and cash equivalents	(48,192)	(4,161)
Cash and cash equivalents, beginning of period	209,902	183,478
Cash and cash equivalents, end of period	161,710	179,317
Supplemental cash flow information:
Income taxes paid	54,224	35,326
Interest paid	2,407	174
Non-cash transactions:
Capital expenditures in accounts payable	3,867	$ 532
Regular quarterly dividend payable	$ 17,352