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Unconsolidated Subsidiaries (Tables)
6 Months Ended
Jun. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]  
Schedule of Financial Information for Unconsolidated Subsidiaries
Summarized financial information for the Unconsolidated Subsidiaries is as follows:
 
THREE MONTHS ENDED
 
SIX MONTHS ENDED
 
JUNE 30
 
JUNE 30
 
2019
 
2018
 
2019
 
2018
Revenues
$
177,883

 
$
182,018

 
$
365,122

 
$
365,064

Gross profit
$
14,631

 
$
20,405

 
$
33,767

 
$
41,468

Income before income taxes
$
14,516

 
$
15,456

 
$
31,253

 
$
31,578