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Discontinued Operations (Tables)
 12 Months Ended
Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]  
Schedule of Discontinued Operations
Operating results for discontinued operations in 2014 are summarized as follows (in thousands):

Year Ended
December 31, 2014
Revenues
 
$
—

 
Gross loss
 
(67
)
 
Operating expenses
 
(5,941
)
 
Operating loss
 
(6,008
)
 
Other income (expense)
 
(74
)
 
Loss before tax benefits
 
(6,082
)
 
Tax benefits
 
2,235

 
Net loss
 
(3,847
)