Annual report pursuant to Section 13 and 15(d)

Income Taxes - Deferred Income Tax Assets and Liabilities (Detail)

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Income Taxes - Deferred Income Tax Assets and Liabilities (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Deferred tax assets:    
Net operating loss carryforwards $ 4,564 $ 4,924
Research and AMT credits 2,208 2,074
Stock based compensation 387 327
Accrued and other 748 651
Deferred Tax Assets, Gross 7,907 7,976
Less valuation allowance (7,455) (7,659)
Deferred tax assets, net of allowance 452 317
Deferred tax liabilities:    
Fixed assets (288) (192)
Goodwill (216) (163)
Deferred tax liabilities (504) (355)
Total deferred tax liabilities $ (52) $ (38)