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Income Taxes (Tables)
 3 Months Ended
Mar. 31, 2014
Income Tax Disclosure [Abstract]  
Details of Income Taxes
The following table provides details of income taxes (in thousands, except percentages):
 
Three months ended
 
 
March 31,
 
 
2014
 
2013
 
Loss before provision for income taxes

($3,966
)
 

($4,128
)
 
Provision for income taxes
251

 
306

 
Effective tax rate
(6
)%
 
(7
)%