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Income Taxes (Tables)
 3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]  
Details of income taxes
The following table provides details of income taxes for the three months ended March 31, 2017 and 2016 (in thousands, except percentages):
 
 
Three months ended
 
 
March 31,
 
 
2017
 
2016
Loss before provision for income taxes
 
$
(995
)
 
$
(3,835
)
Provision for income taxes
 
46

 
61

Effective tax rate
 
(5
)%
 
(2
)%