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Discontinued Operations (Tables)
 12 Months Ended
Dec. 31, 2016
Discontinued Operations and Disposal Groups [Abstract]  
Summarized Operating Results of Discontinued Operations and Assets and Liabilities Classified as Held for Sale
Summarized operating results of the discontinued operations are as follows (in thousands):
 
 
Years Ended December 31,
 
 
2016
 
2015
 
2014
Net revenue
 
$
—

 
$
—

 
$
7,530

Operating expenses
 
—

 
38

 
7,610

Income (loss) from operations
 
—

 
(38
)
 
(80
)
Interest expense
 
—

 
—

 
(17
)
Interest income and other income (expense)
 
—

 
4

 
(60
)
Loss before income tax
 
—

 
(34
)
 
(157
)
Income tax benefit (expense)
 
—

 
13

 
132

Loss from discontinued operations
 
$
—

 
$
(21
)
 
$
(25
)
Gain (loss) from sale of discontinued operations
 
—

 
—

 
(121
)
Gain (loss) from discontinued operations
 
$
—

 
$
(21
)
 
$
(146
)