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Deposit contracts (Tables)
 12 Months Ended
Dec. 31, 2019
Deposit Contracts, Liabilities [Abstract]  
Schedule of deposit contracts
The following table represents activity in the deposit contracts for the years ended December 31, 2019, 2018 and 2017:
 
2019
 
2018
 
2017
Balance, beginning of year
$
145,342

 
$
129,133

 
$
104,905

Consideration received
23,884

 
17,879

 
22,658

Consideration receivable
10,164

 
7,390

 
2,080

Net investment expense (income) allocation
5,879

 
(1,273
)
 
2,800

Payments
(13,052
)
 
(8,089
)
 
(3,545
)
Foreign currency translation
42

 
302

 
235

Balance, end of year
$
172,259

 
$
145,342

 
$
129,133