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Discontinued Operations (Tables)
 12 Months Ended
Dec. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]  
Summary of Financial Information for Discontinued Operations
The following represents a reconciliation of the major classes of line items constituting income from discontinued operations primarily related to Quanta’s fiber optic licensing operations to the accompanying consolidated statements of operations (in thousands):
 
 
Year Ended December 31,
 
 
2016
 
2015
Major classes of line items constituting pretax income from discontinued operations:
 
 
 
 
Revenues
 
$
—

 
$
59,998

Expenses:
 
 
 
 
Cost of services (including depreciation)
 
—

 
24,748

Selling, general and administrative expenses
 
(980
)
 
12,047

Amortization of intangible assets
 
—

 
963

 
 
 
 
 
Other income (expense) items that are not major
 
—

 
10

Net income before taxes of discontinued operations related to fiber optic licensing operations related to major classes of income before taxes
 
980

 
22,250

Pretax gain on the disposal of the fiber optic licensing operations
 
—

 
271,833

Total pretax gain on fiber optic licensing operations
 
980

 
294,083

Provision for income taxes related to fiber optic licensing operations
 
667

 
103,462

Net income from discontinued operations related to fiber optic licensing operations
 
313

 
190,621

Net loss from discontinued operations related to telecommunication operations
 
(655
)
 
—

Net income (loss) from discontinued operations as presented in the accompanying consolidated statements of operations
 
$
(342
)
 
$
190,621