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Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Deferred income tax assets:    
Net operating loss $ 6,391 $ 5,355
Research and development credits 1,338 1,363
Stock compensation 121 114
Deferred compensation 617 632
Other 354 515
Total deferred income tax assets 8,821 7,979
Deferred income tax liabilities:    
Property and equipment (48,427) (47,044)
Goodwill and other intangible assets (192) (223)
Total deferred income tax liabilities (48,619) (47,267)
Net deferred income tax liabilities $ (39,798) $ (39,288)