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Noncontrolling Interests (Tables)
3 Months Ended
Mar. 31, 2019
Noncontrolling Interest [Abstract]  
Summary of Redeemable Noncontrolling Interests

The components of redeemable noncontrolling interests are as follows (in thousands):

 

Balance at December 31, 2018

 

$

28,806

 

Acquisition of redeemable noncontrolling interests

 

 

3,085

 

Net income attributable to noncontrolling interests

 

 

40

 

Balance at March 31, 2019

 

$

31,931