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Discontinued Operations and Divestitures (Tables)
 12 Months Ended
Dec. 31, 2017
Discontinued Operations And Disposal Groups [Abstract]  
Summarized Financial Information For Discontinued Operations, Net of Tax

Summarized financial information for discontinued operations is shown below (in thousands):

 

 

 

2017

 

 

2016

 

 

2015

 

Revenue

 

$

—

 

 

$

—

 

 

$

6,248

 

Loss from operations of discontinued operations before

   income tax expense

 

$

(1,092

)

 

$

(917

)

 

$

(3,518

)

Income tax benefit

 

 

(437

)

 

 

(375

)

 

 

(1,195

)

Loss from operations of discontinued operations, net of tax

 

$

(655

)

 

$

(542

)

 

$

(2,323

)

 

 

 

 

 

 

 

 

 

 

 

 

 

Gain on disposal of discontinued operations, before income

   tax expense

 

$

—

 

 

$

—

 

 

$

1,510

 

Income tax expense

 

 

—

 

 

 

—

 

 

 

83

 

Gain on disposal of discontinued operations, net of tax

 

$

—

 

 

$

—

 

 

$

1,427