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Other Current Assets (Details) - USD ($)
$ in Thousands
Apr. 30, 2020
Jan. 31, 2020
Other Current Assets    
Prepaid maintenance contracts $ 203 $ 144
Prepaid insurance 220 49
Prepaid material and supplies 2,103 1,313
UK factoring (due from HSBC) 367 113
Prepaid other 336 414
Other current assets $ 3,229 $ 2,033