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Discontinued Operation (Tables)
 12 Months Ended
Dec. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]  
Schedule of Operating Results of Company's Former Commercial Business Following is a summary of certain financial information regarding our discontinued operations (in thousands):
 
Year Ended December 31,
 
2018
 
2017
 
2016
Loss from discontinued operations before income taxes
$
(206
)
 
$
(1,713
)
 
$
(1,077
)
Income tax expense (benefit)
246

 
(355
)
 
(154
)
Total loss from discontinued operations
$
(452
)
 
$
(1,358
)
 
$
(923
)