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Investments (Tables)
 12 Months Ended
Dec. 31, 2018
Investments [Abstract]  
Summary of the change in noncontrolling interest

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Year ended December 31

 
2017

    
2016

Noncontrolling interest at beginning of period

 

$

13,762

 

$

13,310

Net loss

 

 

(130)

 

 

(1,887)

Foreign currency translation

 

 

826

 

 

2,339

Comprehensive income

 

 

696

 

 

452

Acquisition of noncontrolling interest

 

 

(14,458)

 

 

 -

Noncontrolling interest at end of period

 

$

 -

 

$

13,762