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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Abstract]    
NOL carryforwards $ 23,291 $ 21,462
UK NOL carryforwards 516 693
Capital loss 416
Allowance for doubtful accounts 139
Compensation and vacation accrual 92 221
Operating accruals 147 213
Deferred revenue 677
Research and experimentation, AMT and foreign tax credits 147 156
Texas Margin Tax Credit 126 129
Fixed assets and intangibles 199 204
Foreign 181
Other 664 504
Total gross deferred tax assets 25,321 24,856
Valuation allowance (24,880) (24,441)
Net deferred tax assets 441 415
Capitalized software 359 349
Amortization 18
Foreign 45 42
Deferred revenue 49
Other 6
Total gross deferred liabilities 453 415
Net deferred taxes $ (12)