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Retirement Plans (Tables)
 3 Months Ended
Apr. 30, 2018
Retirement Benefits [Abstract]  
Schedule of Defined Benefit Plans Disclosures
The net periodic pension cost (income) for the Pension Plan and the VIP Plan for the three months ended April 30, 2018 and 2017 were as follows (in thousands):
 
Three Months Ended
 
Pension Plan
 
VIP Plan
4/30/2018
 
4/30/2017
 
4/30/2018
 
4/30/2017
Service cost
$
—

 
$
—

 
$
—

 
$
—

Interest cost
266

 
304

 
89

 
89

Expected return on plan assets
(407
)
 
(342
)
 
—

 
—

Amortization of transition amount
—

 
—

 
—

 
—

Recognized (gain) loss due to Curtailments
—

 
—

 
—

 
—

Amortization of prior service cost
—

 
—

 
—

 
—

Recognized net actuarial (gain) loss
90

 
179

 
82

 
60

Benefit cost
$
(51
)
 
$
141

 
$
171

 
$
149