XML 43 R24.htm IDEA: XBRL DOCUMENT v3.8.0.1
Interest Income (Tables)
 12 Months Ended
Dec. 31, 2017
Banking and Thrift, Interest [Abstract]  
Summary of Interest Income
Interest income was comprised of the following components for the years ended December 31 (in thousands):
 
2017
 
2016
 
2015
Interest on unpaid principal balance
$
382,983

 
$
300,713

 
$
227,579

Interest on deposits
132

 
171

 
408

Amortization of net deferred origination costs
(48,540
)
 
(36,040
)
 
(32,939
)
Total interest income
$
334,575

 
$
264,844

 
$
195,048