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Income Taxes (Tables)
 9 Months Ended
Sep. 30, 2016
Income Tax Disclosure [Abstract]  
Details of income taxes
The following table provides details of income taxes for the three and nine months ended September 30, 2016 and 2015 (in thousands, except percentages):
 
 
Three months ended
 
Nine months ended
 
 
September 30,
 
September 30,
 
 
2016
 
2015
 
2016
 
2015
Income (loss) before provision (benefit) for income taxes
 
$
(3,082
)
 
$
109

 
$
(8,904
)
 
$
(2,189
)
Provision (benefit) for income taxes
 
31

 
(39
)
 
128

 
88

Effective tax rate
 
(1
)%
 
(36
)%
 
(1
)%
 
(4
)%