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Schedule II: Valuation and Qualifying Accounts
 12 Months Ended
Jan. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II: Valuation and Qualifying Accounts
Schedule II: Valuation and Qualifying Accounts
The table below details the activity of the accounts receivable allowances and deferred tax asset valuation allowance for the fiscal years ended January 31, 2020, 2019, and 2018:
Balance at
Beginning of Year		AdditionsWrite-offs or DeductionsBalance at
End of Year
(in thousands) 
Year ended January 31, 2020
Accounts receivable allowances$2,071  $8,583  $(3,020) $7,634  
Deferred tax asset valuation allowance877  35,476  —  36,353  
Year ended January 31, 2019
Accounts receivable allowances$560  $3,763  $(2,252) $2,071  
Deferred tax asset valuation allowance3,154  —  (2,277) 877  
Year ended January 31, 2018
Accounts receivable allowances$922  $1,284  $(1,646) $560  
Deferred tax asset valuation allowance6,220  —  (3,066) 3,154