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Notes Receivable from Employees
 12 Months Ended
Dec. 31, 2018
Receivables [Abstract]  
Notes Receivable from Employees
Notes Receivable from Employees
The table below summarizes the changes in the carrying amount of our notes receivable from employees.
 
December 31,
 
2018
 
2017
Notes receivable from employees — beginning
$
123,796

 
$
136,388

Notes granted
32,937

 
18,247

Repayments
(5,405
)
 
(7,394
)
Amortization expense
(36,418
)
 
(26,821
)
Cumulative translation adjustment and other
(1,211
)
 
3,376

Notes receivable from employees — ending
113,699

 
123,796

Less: current portion
(29,228
)
 
(25,691
)
Notes receivable from employees, net of current portion
$
84,471

 
$
98,105


As of December 31, 2018 and 2017, there were 294 and 270 notes outstanding, respectively. Total amortization expense for the years ended December 31, 2018, 2017 and 2016 was $36.4 million, $26.8 million and $25.6 million, respectively.