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Segment Reporting (Tables)
 3 Months Ended
Apr. 30, 2016
Segment Reporting [Abstract]  
Business segment net sales and operating income results
Business segment net sales and operating income results are as follows:
 
Three Months Ended
 
April 30, 2016 (As Restated)
 
April 30,
2015
Net sales
 
 
 
Applied Technology
$
31,456

 
$
32,410

Engineered Films
29,100

 
31,321

Aerostar
7,895

 
6,554

Intersegment eliminations (a)
(91
)
 
(12
)
Consolidated net sales
$
68,360

 
$
70,273

 
 
 
 
Operating income (loss)
 
 
 
Applied Technology
$
8,693

 
$
8,741

Engineered Films
3,878

 
4,471

Aerostar
(178
)
 
(853
)
Intersegment eliminations (a)
(5
)
 
59

Total reportable segment income
12,388

 
12,418

Administrative and general expenses
(4,338
)
 
(5,204
)
Consolidated operating income
$
8,050

 
$
7,214


(a) Intersegment sales for both fiscal 2017 and 2016 were primarily sales from Engineered Films to Aerostar.