INVENTORIES
 3 Months Ended
Apr. 30, 2018
Inventory Disclosure [Abstract]  
INVENTORIES
INVENTORIES
 
April 30, 2018
 
January 31, 2018
 
(in thousands)
New equipment
$
307,207

 
$
258,559

Used equipment
137,222

 
141,450

Parts and attachments
71,894

 
71,110

Work in process
1,850

 
1,348

 
$
518,173

 
$
472,467