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Income Taxes - Components of Deferred Income Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Jan. 31, 2022
Jan. 31, 2021
Accrued liabilities not currently deductible $ 5,408 $ 4,471
Accumulated net operating losses 10,594 12,866
Corporate minimum taxes 2,346 1,596
Difference between tax and accounting basis of property and equipment 12,021 23,754
Research and development and other tax credits and expenses 1,172 1,649
Total deferred income tax assets 31,541 44,336
Difference between tax and accounting basis of intangible assets (47,255) (45,030)
Other temporary differences (2,886) (2,109)
Total deferred income tax liabilities (50,141) (47,139)
Net deferred income taxes (18,600) (2,803)
Valuation allowance (1,961) (11,365)
Net deferred income taxes, net of valuation allowance $ (20,561) $ (14,168)