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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Income Tax Disclosure [Abstract] |  |
NOL carryforwards | $ 14,730 | $ 15,756
UK NOL carryforwards | 552 | 534
Allowance for doubtful accounts | 92 | 97
Compensation and vacation accrual | 57 | 58
Operating accruals | 6 | 285
Research and experimentation, AMT and foreign tax credits | 126 | 126
Texas margin tax credit | 106 | 120
Lease liabilities | 854 |
Other | 846 | 850
Total gross deferred tax assets | 17,369 | 17,826
Valuation allowance | (16,218) | (17,149)
Net deferred tax assets | 1,151 | 677
Capitalized software | 497 | 523
Right of use assets | 544 |
Fixed assets and intangibles | 45 | 86
Foreign | 47 | 45
Total gross deferred liabilities | 1,133 | 654
Net deferred taxes | $ 18 | $ 23

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