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Note 12 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Research and development credit carryforwards $ 10,743 $ 16,965
Foreign tax credit carryforwards 933 3,497
Accrued liabilities 1,655 2,019
Deferred revenues 7,250 5,123
Operating lease liabilities 11,777 15,924
Intangible assets 12,377 1,397
Stock-based compensation 4,085 3,907
Other 2,987 720
Gross deferred tax assets 51,807 49,552
Valuation allowance (11,364) (11,188)
Net deferred tax assets 40,443 38,364
Fixed assets (3,320) (7,017)
Operating leases - right of use asset (9,010) (13,054)
Deferred commissions (3,026) (2,482)
Total deferred tax liabilities (15,356) (22,553)
Net deferred tax assets $ 25,087 $ 15,811