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INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Deferred tax assets:    
Accounts receivable and financing receivables $ 1,589 $ 871
Stock-based compensation 1,003 1,275
Deferred revenue 660 367
Research expenditures 26,449 16,496
Accrued severance 236 890
Right of use asset 561 952
Capital loss on sale of AHT stock 3,323 0
Credits 891 0
Other 2,893 2,770
Net operating loss 1,835 3,656
Deferred tax assets 39,440 27,277
Less: Valuation allowance 13,280 604
Total deferred tax assets 26,160 26,673
Deferred tax liabilities:    
Intangible assets 15,118 14,477
Accrued liabilities and other 11,880 12,127
Fixed assets 237 254
Right of use liability 796 1,045
Total deferred tax liabilities 28,031 27,903
Total net deferred tax liability $ (1,871) $ (1,230)