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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2018
Income Tax Disclosure [Abstract]  
Components of Loss before Income Taxes
    Year Ended December 31,    
    2018       2017    
United States   $ (9,458 )   $ (1,541 )
Foreign     357       619  
Total   $ (9,101 )   $ (922 )
Components of Provision for Income Taxes from Continuing Operations
    Year Ended December 31,    
Current:   2018       2017    
Federal   $     $ (79 )
State     8       13  
Foreign     (38 )     85  
Total Current   $ (30 )   $ 19  
Deferred                
Federal   $     $  
State            
Foreign     29       585  
Total Deferred   $ 29     $ 585  
Provision (benefit) for income taxes   $ (1 )   $ 604  
Reconciliation of Federal Statutory Income Tax Rate to Effective Income Tax Rate
    Year Ended December 31,    
    2018       2017    
Provision at Federal statutory rate   $ (1,911 )   $ (322 )
State taxes     8       13  
Permanent differences/other     65       581  
Tax Cuts and Jobs Act of 2017 Rate Change           22,714  
Stock-based compensation     81       365  
Federal valuation allowance (used) provided     1,756       (22,747 )
Provision (benefit) for income taxes   $ (1 )   $ 604  
Components of Deferred Tax Assets and Liabilities
    December 31,    
    2018       2017    
Deferred Tax Assets            
Fixed assets   $ 66     $ 64  
Accruals and reserves     2,673       147  
Stock options     179       196  
Net operating loss carryforwards     35,522       35,254  
Federal and state credits     3,461       3,461  
Foreign credits     152       165  
Intangible assets     2,139       2,442  
Research and development expense     2,224       2,542  
Gross deferred tax assets     46,416       44,271  
Valuation allowance     (46,283 )     (44,100 )
Total deferred tax assets     133       171  
Deferred Tax Liabilities (1)     (543 )     (543 )
Net deferred tax asset/liabilities     (410 )     (372 )

 

(1)The 543,000 deferred tax liabilities is the only tax related to the Indian subsidiaries remittance would be a dividend distribution tax.

Reconciliation of Beginning and Ending Unrecognized Tax Benefits
    Year Ended December 31,    
    2018       2017    
Balance at beginning of year   $ 2,229     $ 2,285  
Increase related to prior year tax positions           26  
Decrease related to prior year tax positions     (20 )      
Increase related to current year tax positions            
Settlements with tax authorities     (92 )     (82 )
Decrease related to lapse of statute of limitations            
Balance at end of year   $ 2,117     $ 2,229