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Quarterly Results (Unaudited) (Tables)
 12 Months Ended
Jan. 31, 2017
Quarterly Financial Information Disclosure [Abstract]  
Schedule of quarterly results
The Company’s quarterly results for the years ended January 31, 2017 and 2016, as adjusted, are summarized as follows (in thousands, except per share data):
 
Q1
 
Q2
 
Q3
 
Q4
Year ended January 31, 2017
 
 
 
 
 
 
 
Net sales
$
20,827

 
$
61,354

 
$
67,795

 
$
23,441

Gross profit
8,063

 
23,738

 
24,311

 
6,431

Net (loss) income **
(3,138
)
 
6,885

 
23,998

 
(4,985
)
Per common share
 
 
 
 
 
 
 
Net (loss) income*
 
 
 
 
 
 
 
Basic
$
(0.21
)
 
$
0.46

 
$
1.59

 
$
(0.33
)
Assuming dilution
(0.21
)
 
0.45

 
1.57

 
(0.33
)
Year ended January 31, 2016
 
 
 
 
 
 
 
Net sales
$
23,048

 
$
61,072

 
$
64,981

 
$
19,494

Gross profit
8,194

 
23,996

 
23,210

 
4,210

Net (loss) income
(3,178
)
 
7,450

 
6,003

 
(5,726
)
Per common share
 
 
 
 
 
 
 
Net (loss) income*
 
 
 
 
 
 
 
Basic
$
(0.21
)
 
$
0.50

 
$
0.40

 
$
(0.38
)
Assuming dilution
(0.21
)
 
0.49

 
0.39

 
(0.38
)
 ______________________________

* Net loss per share was calculated based on basic shares outstanding due to the anti-dilutive effect on the inclusion of common stock equivalent shares.

** For fiscal quarter ended October 31, 2016, the Company released its valuation allowance against the deferred tax assets resulting in a benefit to income taxes of $17,962,000.