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Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Jan. 31, 2022
Jan. 31, 2021
Jan. 31, 2020
Deferred tax assets:      
Net operating loss carryforwards $ 136,226 $ 111,583  
Stock-based compensation 7,271 7,884  
Allowance for doubtful accounts 523 650  
Operating lease liability 32,156 33,350  
Accrued expenses 2,372 2,903  
Unearned revenue 61 52  
Intangible assets 10,625 11,570  
Other 339 216  
Total deferred tax assets 189,573 168,208  
Less: valuation allowance (151,205) (129,178) $ (105,300)
Deferred tax assets, net of valuation allowance 38,368 39,030  
Deferred tax liabilities:      
Property and equipment (2,440) (2,062)  
Costs to obtain revenue contracts (11,041) (9,904)  
Operating lease right-of-use assets (23,259) (25,082)  
Other (874) (1,028)  
Total deferred tax liabilities (37,614) (38,076)  
Net deferred tax asset (liability) $ 754 $ 954