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Intangible assets (Tables)
 9 Months Ended
Jul. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Components of Intangible Assets
Intangible assets are comprised of the following (in thousands): 
 
 
 
July 31, 2015
 
October 31, 2014
 
Amortizable intangible assets:
 
 
 
 
 
 
 
Non-compete agreements
 
$
310
 
$
200
 
Accumulated amortization
 
 
(193)
 
 
(135)
 
 
 
 
117
 
 
65
 
 
 
 
 
 
 
 
 
Customer relationships
 
 
5,100
 
 
1,730
 
Accumulated amortization
 
 
(966)
 
 
(608)
 
 
 
 
4,134
 
 
1,122
 
 
 
 
 
 
 
 
 
Backlog
 
 
134
 
 
75
 
Accumulated amortization
 
 
(85)
 
 
(75)
 
 
 
 
49
 
 
-
 
 
 
 
 
 
 
 
 
Patents
 
 
142
 
 
-
 
Accumulated amortization
 
 
(2)
 
 
-
 
 
 
 
140
 
 
-
 
 
 
 
 
 
 
 
 
Totals
 
$
4,440
 
$
1,187
 
 
 
 
 
 
 
 
 
Non-amortizable intangible assets:
 
 
 
 
 
 
 
Trademarks
 
$
1,387
 
$
410