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Income Taxes Effective rate reconcilation (Tables)
 12 Months Ended
Dec. 31, 2013
Effective Rate Reconciliation [Abstract]  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
The provision for income taxes differs from the amount estimated by applying the statutory Federal income tax rate to loss before taxes as follows (in thousands):
 
Year ended 31 December
 
2013
 
2012
 
2011
Federal tax at statutory rate of 35%
$
(6,156
)
 
$
(4,537
)
 
$
(4,435
)
State taxes, net of federal benefit
17

 
5

 
3

U.S.-Foreign rate differential
342

 
87

 
(46
)
Change in Valuation Allowance
6,969

 
4,530

 
4,825

Research and Development credits
(1,241
)
 
—

 
—

Others
380

 
134

 
(18
)
Total income tax expense
$
311

 
$
219

 
$
329