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Contingencies (Tables)
 12 Months Ended
Jan. 31, 2021
Contingencies [Abstract]  
Estimated payments under the self-insurance programs Estimated payments under the self-insurance programs are as follows (in thousands):
Year ending January 31, 
2022$200 
2023225 
2024225 
2025225 
2026225 
Thereafter75 
Total$1,175 
Discount to net present value(40)
$1,135