Other Intangible Assets (Schedule Of Amortizable Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Amortizable Intangible Assets, Cost Basis	$ 14,466	$ 15,150	$ 7,557
Amortizable Intangible Assets, Accumulated Amortization	(6,576)	(5,034)	(3,945)
Amortizable Intangible Assets, Net Value	7,890	10,116	3,612
Activity, Cost Basis		7,593
Activity, Cost Basis	(684)
Activity, Accumulated Amortization	(1,542)	(1,089)
Activity, Net Value	$ (2,226)	$ 6,504
Weighted average remaining useful life	11 years 1 month 10 days	11 years 3 months 22 days
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable Intangible Assets, Cost Basis	$ 11,727	$ 11,947	7,174
Amortizable Intangible Assets, Accumulated Amortization	(5,558)	(4,418)	(3,584)
Amortizable Intangible Assets, Net Value	6,169	7,529	3,590
Activity, Cost Basis		4,773
Activity, Cost Basis	(220)
Activity, Accumulated Amortization	(1,140)	(834)
Activity, Net Value	$ (1,360)	$ 3,939
Weighted average remaining useful life	11 years 9 months 29 days	12 years 7 days
Other Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable Intangible Assets, Cost Basis	$ 2,739	$ 3,203	383
Amortizable Intangible Assets, Accumulated Amortization	(1,018)	(616)	(361)
Amortizable Intangible Assets, Net Value	1,721	2,587	$ 22
Activity, Cost Basis		2,820
Activity, Cost Basis	(464)
Activity, Accumulated Amortization	(402)	(255)
Activity, Net Value	$ (866)	$ 2,565
Weighted average remaining useful life	8 years 6 months 11 days	3 years 2 months 5 days