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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
NOL carryforwards	$ 15,756	$ 15,337
UK NOL carryforwards	534	567
Allowance for doubtful accounts	97	119
Compensation and vacation accrual	58	64
Operating accruals	285	47
Research and experimentation, AMT and foreign tax credits	126	148
Texas margin tax credit	120	136
Other	850	514
Total gross deferred tax assets	17,826	16,932
Valuation allowance	(17,149)	(16,340)
Net deferred tax assets	677	592
Capitalized software	523	375
Fixed assets and intangibles	86	220
Foreign	45	49
Total gross deferred liabilities	654	644
Net deferred taxes, assets	$ 23
Net deferred taxes, liabilities		$ (52)

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