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Intangibles, Net (Tables)
 12 Months Ended
Jul. 31, 2015
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Schedule of intangible assets
The following table sets forth amortizable intangible assets by major asset class:
 
Gross
Carrying
Amount
 
Accumulated
Amortization
Net
Book Value
 
Weighted Average
Remaining Useful
Life (in years)
 
July 31,
 
July 31,
 
July 31,
 
July 31,
(In thousands, except remaining useful life)
2015
 
2014
 
2015
 
2014
 
2015
 
2014
 
2015
 
2014
Amortized intangibles:
 

 
 

 
 

 
 

 
 

 
 

 
 
 
 
Covenants not to compete
$
1,691

 
$
1,797

 
$
(900
)
 
$
(615
)
 
$
791

 
$
1,182

 
3
 
4
Supply contracts & customer relationships
27,506

 
29,128

 
(13,551
)
 
(9,747
)
 
13,955

 
19,381

 
4
 
5
Trade name
5,129

 
5,791

 
(2,467
)
 
(1,479
)
 
2,662

 
4,312

 
3
 
4
Licenses and databases
2,498

 
1,810

 
(2,049
)
 
(1,443
)
 
449

 
367

 
2
 
3
Intangibles, net
$
36,824

 
$
38,526

 
$
(18,967
)
 
$
(13,284
)
 
$
17,857

 
$
25,242

 
 
 
 
Schedule of aggregate amortization expense on intangible assets
Intangible amortization expense for the next five fiscal years based upon July 31, 2015 intangible assets is expected to be as follows:
(In thousands)
 
2016
$
5,811

2017
5,497

2018
4,414

2019
817

2020
574

Thereafter
744

Total future intangible amortization expense
$
17,857