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Investments in Marketable Securities (Tables)
12 Months Ended
Jan. 31, 2020
Investments, Debt and Equity Securities [Abstract]  
Schedule of Marketable Securities
As of January 31, 2020, the Company had no marketable securities on its consolidated balance sheet. The following table summarize the Company's investments in marketable securities as of January 31, 2019:
(in thousands)Amortized CostGross Unrealized GainsGross Unrealized LossesFair Value
Corporate bonds  $16,949  $—  $(28) $16,921  
U.S. treasury securities  34,112  —  (12) 34,100  
Total marketable securities$51,061  $—  $(40) $51,021  
Schedule of Investment Income