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Other Assets
 12 Months Ended
Dec. 31, 2019
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Assets Other Assets

Other assets consist of the following:
December 31,
2019
 
2018
Loan servicing assets, at fair value (1)
$
89,680

 
$
64,006

Accounts receivable
19,017

 
19,322

Prepaid expenses
14,862

 
25,598

Other investments
8,242

 
8,503

Deferred financing costs
1,484

 
2,117

Other
10,383

 
5,421

Total other assets 
$
143,668

 
$
124,967

(1)  
Loans underlying loan servicing rights had a total outstanding principal balance of $14.1 billion and $10.9 billion as of December 31, 2019 and 2018, respectively.