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Acquisitions (Tables)
 12 Months Ended
Dec. 31, 2018
Business Combinations [Abstract]  
Transaction Related Expenses as Incurred

Transaction-related expenses comprised the following costs for the years ended years ended December 31, 2018, 2017 and 2016 (in thousands):

 

 

 

Year Ended December 31,

 

 

 

2018

 

 

2017

 

 

2016

 

CEO transition costs

 

$

14,033

 

 

$

—

 

 

$

—

 

Termination and closure costs

 

 

11,829

 

 

 

16,190

 

 

 

15,449

 

Legal, accounting and other

 

 

8,645

 

 

 

8,077

 

 

 

18,024

 

Advisory and financing commitment fees

 

 

—

 

 

 

—

 

 

 

14,850

 

 

 

$

34,507

 

 

$

24,267

 

 

$

48,323