Mortgage Servicing Rights (Tables)

3 Months Ended

Mar. 31, 2019

Mortgage Servicing Rights

Schedule of estimated future amortization expense for mortgage servicing assets

	Estimated
(dollars in thousands)	Amortization
Under one year	$	2,236
One to two years		1,968
Two to three years		1,733
Three to four years		1,523
Four to five years		1,339

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

	March 31,		December 31,
(dollars in thousands)	2019		2018
Gross carrying amount	$	63,350	$	63,342
Less: accumulated amortization		47,951		47,187
Net carrying value	$	15,399	$	16,155

Schedule of changes in amortized mortgage servicing assets

	Three Months Ended March 31,
(dollars in thousands)	2019		2018
Balance at beginning of period	$	16,155	$	13,196
Originations		8		7
Purchases		—		6,444
Amortization		(764)		(988)
Balance at end of period	$	15,399	$	18,659
Fair value of amortized MSRs at beginning of period	$	27,662	$	21,697
Fair value of amortized MSRs at end of period	$	26,383	$	29,048

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

	March 31, 2019							December 31, 2018
						Weighted							Weighted
	Range					Average		Range					Average
Conditional prepayment rate	8.00	%	-	20.28	%	8.47	%	7.86	%	-	19.26	%	8.31	%
Life in years (of the MSR)	3.18		-	7.56		7.08		3.43		-	7.68		7.19
Weighted-average coupon rate	3.97	%	-	6.67	%	4.02	%	3.97	%	-	6.70	%	4.02	%
Discount rate	10.00	%	-	10.01	%	10.00	%	10.00	%	-	10.02	%	10.00	%