Condensed Consolidated Statements of Income and Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Net sales	$ 975,071	$ 852,416	$ 2,005,422	$ 1,774,408
Cost of products sold	826,249	750,416	1,704,384	1,554,743
Gross profit	148,822	102,000	301,038	219,665
Selling, general and administrative expenses	67,366	54,302	135,820	112,291
Amortization of intangible assets	5,854	3,967	11,882	7,656
Impairment charges	9,113		9,113
Interest income	105	340	243	707
Interest expense	168	1	342	1
Other income (expense), net	(538)	67	(545)	419
Income from continuing operations before income taxes	65,888	44,137	143,579	100,843
Income taxes	20,641	13,870	47,596	31,375
Net income from continuing operations	45,247	30,267	95,983	69,468
Loss from discontinued operations, net of income taxes	(579)	(1,619)	(818)	(1,895)
Net Income and comprehensive income	$ 44,668	$ 28,648	$ 95,165	$ 67,573
Weighted-average common shares outstanding:
Basic	52,474,801	53,377,440	52,442,373	53,355,757
Diluted	52,561,122	53,458,531	52,553,341	53,444,730
Earnings per common share from continuing operations:
Basic	$ 0.86	$ 0.57	$ 1.83	$ 1.30
Diluted	0.86	0.57	1.83	1.30
Loss per common share from discontinued operations:
Basic	(0.01)	(0.03)	(0.02)	(0.03)
Diluted	(0.01)	(0.03)	(0.02)	(0.04)
Earnings per common share:
Basic	0.85	0.54	1.81	1.27
Diluted	0.85	0.54	1.81	1.26
Regular dividends declared and paid per common share	$ 0.30	$ 0.27	$ 0.60	$ 0.54