Mortgage Servicing Rights (Tables)

9 Months Ended

Sep. 30, 2019

Mortgage Servicing Rights

Schedule of estimated future amortization expense for mortgage servicing assets

	Estimated
(dollars in thousands)	Amortization
Under one year	$	2,467
One to two years		2,048
Two to three years		1,693
Three to four years		1,403
Four to five years		1,172

Schedule of gross carrying values, accumulated amortization, and net carrying values of mortgage servicing assets

	September 30,		December 31,
(dollars in thousands)	2019		2018
Gross carrying amount	$	63,401	$	63,342
Less: accumulated amortization		49,771		47,187
Net carrying value	$	13,630	$	16,155

Schedule of changes in amortized mortgage servicing assets

	Three Months Ended September 30,				Nine Months Ended September 30,
(dollars in thousands)	2019		2018		2019		2018
Balance at beginning of period	$	14,573	$	17,660	$	16,155	$	13,196
Originations		35		233		59		262
Purchases		—		—		—		6,444
Amortization		(978)		(956)		(2,584)		(2,965)
Balance at end of period	$	13,630	$	16,937	$	13,630	$	16,937
Fair value of amortized MSRs at beginning of period	$	23,398	$	28,344	$	27,662	$	21,697
Fair value of amortized MSRs at end of period	$	19,678	$	27,945	$	19,678	$	27,945

Schedule of quantitative assumptions used in determining lower of cost or fair value of MSRs

	September 30, 2019							December 31, 2018
						Weighted							Weighted
	Range					Average		Range					Average
Conditional prepayment rate	12.41	%	-	21.77	%	12.61	%	7.86	%	-	19.26	%	8.31	%
Life in years (of the MSR)	2.13		-	5.79		5.51		3.43		-	7.68		7.19
Weighted-average coupon rate	3.97	%	-	7.31	%	4.02	%	3.97	%	-	6.70	%	4.02	%
Discount rate	10.00	%	-	10.01	%	10.00	%	10.00	%	-	10.02	%	10.00	%