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Note 9 - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
 
 
Years Ended December 31,
 
 
 
201
6
 
 
201
5
 
Current:
               
Federal
  $
(70
  $
4
 
State
   
20
     
15
 
Foreign
   
13
     
111
 
     
(37
   
130
 
Deferred:
               
Federal
   
220
     
169
 
State
   
-
     
-
 
Foreign
   
(85
   
11
 
     
135
     
180
 
Total income tax provision
  $
98
    $
310
 
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
 
 
Years Ended December 31,
 
 
 
201
6
 
 
201
5
 
Deferred Tax Liabilities:
               
Property, Plant and Equipment
  $
-
    $
-
 
Intangible Assets
   
5,471
     
4,631
 
Total Deferred Tax Liabilities
   
5,471
     
4,631
 
                 
Deferred Tax Assets:
               
Property, Plant and Equipment
   
77
     
288
 
Net Operating Loss Carry-Forwards
   
27,127
     
27,283
 
Tax Credit Carry-Forwards
   
1,704
     
1,596
 
Intangible Assets
   
2,923
     
3,391
 
Accrued Expenses, Reserves and Other
   
1,527
     
2,127
 
Total Deferred Tax Assets
   
33,358
     
34,685
 
Valuation Allowance for Deferred Tax Assets
   
(33,331
)    
(34,593
)
Net Deferred Tax Assets
   
27
     
92
 
                 
Net Deferred Tax Liabilities
  $
5,444
    $
4,539
 
Schedule of Net Deferred Tax Liabilities [Table Text Block]
 
 
Years Ended December 31,
 
 
 
201
6
 
 
201
5
 
                 
Current Deferred Tax Assets
  $
94
    $
92
 
Non-Current Deferred Tax Liabilities
   
(5,538
)    
(4,631
)
    $
(5,444
)   $
(4,539
)
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
 
 
Years Ended December 31,
 
 
 
201
6
 
 
201
5
 
United States
  $
2,803
    $
2,582
 
Foreign
   
777
     
568
 
    $
3,580
    $
3,150
 
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
 
 
Years Ended December 31,
 
 
 
201
6
 
 
201
5
 
                 
Statutory Income Tax Rate
   
34.0
%    
34.0
%
(Increase) Decrease in Tax Provision Resulting From:
               
Equity Compensation
   
9.6
     
2.2
 
Income Tax Credits
   
(6.2
)    
(4.5
)
Foreign Tax Rates
   
(2.2
)    
(2.2
)
Release of Unrecognized Tax Benefits
   
-
     
(231.6
)
Valuation Allowance
   
(30
   
210.9
 
Excess Accrual    
(5.2
)    
-
 
Other
   
2.7
     
1.0
 
Effective Income Tax Rate
   
2.7
%    
9.8
%
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
 
 
Years Ended December 31,
 
 
 
201
6
 
 
201
5
 
Balance – beginning of year
  $
-
    $
7,296
 
Increases related to current year tax positions
   
-
     
-
 
Increases related to prior year tax positions
   
-
     
-
 
Decreases related to prior year tax positions
   
-
     
-
 
Expiration of statute of limitations for assessment of taxes
   
-
     
-
 
Settlements of examinations
   
-
     
(7,296
)
Balance – end of year
  $
-
    $
-