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Revenue Recognition - Textuals (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2021
Oct. 31, 2021
Jan. 31, 2021
Oct. 31, 2020
Revenue Recognition [Abstract]        
Contract liability $ 3,800 $ 3,800 $ 5,900 $ 4,100
Revenue recognized related to contract liabilities 3,200 4,400    
Contract assets $ 0 $ 0 $ 0 $ 0