COMPUTATION OF NET (LOSS) INCOME PER SHARE (Tables)
 3 Months Ended
Apr. 30, 2016
COMPUTATION OF NET (LOSS) INCOME PER SHARE [Abstract]  
Computation of basic and diluted net income per share
The following table sets forth the computation of basic and diluted net (loss) income per share:

  
Three Months Ended
April 30,
 
  
2016
  
2015
 
  
(in thousands except per share data)
 
Net (loss) income
 
$
(2,742
)
 
$
549
 
Less: Dividends declared
  
(1,316
)
  
(1,299
)
Undistributed net loss
 
$
(4,058
)
 
$
(750
)
         
Net (loss) income per share – Class A Common Stock
        
Dividends declared
 
$
1,124
  
$
1,107
 
Allocation of undistributed net loss
  
(3,465
)
  
(639
)
Net (loss) income attributable to Class A common stock
 
$
(2,341
)
 
$
468
 
         
Weighted average shares of Class A common stock outstanding—basic
  
15,594
   
15,262
 
Weighted average potential shares of Class A common stock
  
—
   
786
 
Weighted average shares of Class A common stock and potential common shares outstanding—diluted
  
15,594
   
16,048
 
         
Basic net (loss) income per Class A common share
 
$
(0.15
)
 
$
0.03
 
Diluted net (loss) income per Class A common share
 
$
(0.15
)
 
$
0.03
 
         
Net (loss) income per share – Class B Common Stock
        
Dividends declared
 
$
192
  
$
192
 
Allocation of undistributed net loss
  
(593
)
  
(111
)
Net (loss) income attributable to Class B common stock
 
$
(401
)
 
$
81
 
         
Weighted average shares of Class B common stock outstanding—basic
  
3,204
   
3,196
 
Weighted average potential shares of Class B common stock
  
—
   
83
 
Weighted average shares of Class B common stock and potential common shares outstanding—diluted
  
3,204
   
3,279
 
         
Basic net (loss) income per Class B common share
 
$
(0.13
)
 
$
0.03
 
Diluted net (loss) income per Class B common share
 
$
(0.13
)
 
$
0.02
 
Number of potential common shares not included in the calculation of diluted net income per share
The following table sets forth the number of potential common shares not included in the calculation of diluted earnings per share because their effects were anti-dilutive:

  
Three Months Ended
April 30,
 
  
2016
  
2015
 
  
(in thousands)
 
Class A
  
2,807
   
326
 
Class B
  
349
   
60