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Supplemental Statements of Cash Flows Information (Tables)
12 Months Ended
Jan. 31, 2019
Supplemental Cash Flow Elements [Abstract]  
Supplemental Disclosures of Cash Flows Information
Supplemental disclosures of cash flows information for the fiscal years ended January 31, 2019, 2018 and 2017 were as follows (in thousands):
 
Years Ended January 31,
 
2019
 
2018
 
2017
Interest paid
$
8

 
$
86

 
$
673

Income taxes paid, net
622

 
494

 
409

Seismic equipment purchases included in accounts payable at year-end

 
53

 
130