Loan Servicing, Mortgage Origination, and Loans Held for Sale (Tables)

12 Months Ended

Dec. 31, 2015

Loan Servicing, Mortgage Origination, and Loans Held for Sale

Summary of changes in the fair value of MSRs and its offsetting hedge

	Year Ended December 31,
(Dollars in thousands)	2015		2014		2013
Increase (decrease) in fair value of MSRs	$	1,015	$	(1,618)	$	1,058
Decay of MSRs		(3,371)		(2,381)		(886)
Gains (losses) related to derivatives		751		3,872		(681)
Net effect on statements of income	$	(1,605)	$	(127)	$	(509)

Schedule of characteristics and sensitivity analysis of the MSR

	December 31,
(Dollars in thousands)	2015			2014
Composition of residential loans serviced for others
Fixed-rate mortgage loans		99.4	%		99.2	%
Adjustable-rate mortgage loans		0.6	%		0.8	%
Total		100.0	%		100.0	%
Weighted average life		7.05	years		6.30	years
Constant Prepayment rate (CPR)		9.6	%		11.4	%
Weighted average discount rate		9.8	%		9.7	%
Effect on fair value due to change in interest rates
25 basis point increase	$	1,562		$	1,365
50 basis point increase		2,950			2,555
25 basis point decrease		(1,866)			(1,562)
50 basis point decrease		(4,021)			(3,221)