Supplemental Statements of Cash Flows Information
 12 Months Ended
Jan. 31, 2018
Supplemental Cash Flow Elements [Abstract]  
Supplemental Statements of Cash Flows Information
Supplemental Statements of Cash Flows Information
Supplemental disclosures of cash flows information for the fiscal years ended January 31, 2018, 2017 and 2016 were as follows (in thousands):
 
Years Ended January 31,
 
2018
 
2017
 
2016
Interest paid
$
86

 
$
673

 
$
694

Income taxes paid, net
494

 
409

 
1,520

Seismic equipment purchases included in accounts payable at year-end
53

 
130

 
325