v3.20.1
Income taxes - Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Jan. 31, 2020
Jan. 31, 2019
Deferred tax assets:    
Net operating loss carryforward $ 1,147 $ 68
Stock compensation 10,764 6,987
Research and development credits 4,693 2,323
Lease liabilities 20,232 0
Deferred rent 0 626
Accruals and reserves 6,854 1,503
Other, net 2,154 224
Total gross deferred tax assets 45,844 11,731
Less valuation allowance (203) (97)
Deferred tax assets, net of valuation allowance 45,641 11,634
Deferred tax liabilities:    
Fixed assets (4,875) (1,294)
Intangible assets (142,673) (4,798)
Incremental contract costs (5,474) (4,654)
Right-of-use assets (21,068) 0
Goodwill (1,831) 0
Other, net (194) (127)
Total gross deferred tax liabilities (176,115) (10,873)
Net deferred tax (liability) $ (130,474)  
Net deferred tax asset   $ 761