Securities (Tables)

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Amortized cost and fair value of investments classified as available-for-sale



	March 31, 2019
(Dollar amounts in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
U.S. Government agencies	$	28,916	$	725	$	(191	)	$	29,450
Mortgage Backed Securities - residential	182,280		1,127		(1,554		)	181,853
Collateralized mortgage obligations	339,477		858		(4,468		)	335,867
State and municipal obligations	230,304		5,706		(263		)	235,747
Collateralized debt obligations	96		3,198		—			3,294
TOTAL	$	781,073	$	11,614	$	(6,476	)	$	786,211



	December 31, 2018
(Dollar amounts in thousands)	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
U.S. Government agencies	$	25,617	$	218	$	(471	)	$	25,364
Mortgage Backed Securities-residential	182,050		723		(4,030		)	178,743
Collateralized mortgage obligations	352,823		217		(9,424		)	343,616
State and municipal obligations	232,457		2,767		(1,289		)	233,935
Collateralized debt obligations	137		3,121		—			3,258
TOTAL	$	793,084	$	7,046	$	(15,214	)	$	784,916

Schedule of contractual maturities of debt securities

Contractual maturities of debt securities at March 31, 2019 were as follows. Securities not due at a single maturity or with no maturity date, primarily mortgage-backed and equity securities are shown separately.



	Available-for-Sale
	Amortized		Fair
(Dollar amounts in thousands)	Cost		Value
Due in one year or less	$	4,322	$	4,344
Due after one but within five years	38,062		38,748
Due after five but within ten years	61,454		62,846
Due after ten years	155,478		162,553
	259,316		268,491
Mortgage-backed securities and collateralized mortgage obligations	521,757		517,720
TOTAL	$	781,073	$	786,211

Schedule of gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in continuous unrealized loss position

The following tables show the securities’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in continuous unrealized loss position, at March 31, 2019 and December 31, 2018.



	March 31, 2019
	Less Than 12 Months					More Than 12 Months					Total
			Unrealized					Unrealized					Unrealized
(Dollar amounts in thousands)	Fair Value		Losses			Fair Value		Losses			Fair Value		Losses
U.S. Government agencies	$	—	$	—		$	4,926	$	(191	)	$	4,926	$	(191	)
Mortgage Backed Securities - Residential	$	98	$	(1	)	$	119,293	$	(1,553	)	$	119,391	$	(1,554	)
Collateralized mortgage obligations	196		—			211,827		(4,468		)	212,023		(4,468		)
State and municipal obligations	1,374		(22		)	17,031		(241		)	18,405		(263		)
Total temporarily impaired securities	$	1,668	$	(23	)	$	353,077	$	(6,453	)	$	354,745	$	(6,476	)



	December 31, 2018
	Less Than 12 Months					More Than 12 Months					Total
			Unrealized					Unrealized					Unrealized
(Dollar amounts in thousands)	Fair Value		Losses			Fair Value		Losses			Fair Value		Losses
US Government Agencies	$	3,052	$	(4	)	$	11,356	$	(467	)	$	14,408	$	(471	)
Mortgage Backed Securities - Residential	$	39,997	$	(553	)	$	111,423	$	(3,477	)	$	151,420	$	(4,030	)
Collateralized mortgage obligations	52,838		(455		)	241,373		(8,969		)	294,211		(9,424		)
State and municipal obligations	34,229		(276		)	41,742		(1,013		)	75,971		(1,289		)
Total temporarily impaired securities	$	130,116	$	(1,288	)	$	405,894	$	(13,926	)	$	536,010	$	(15,214	)

Rollforward of the credit losses recognized in earnings

The table below presents a rollforward of the credit losses recognized in earnings for the three month periods ended March 31, 2019 and 2018:



	Three Months Ended March 31,
(Dollar amounts in thousands)	2019		2018
Beginning balance	$	2,974	$	7,132
Increases to the amount related to the credit
Loss for which other-than-temporary was previously recognized	—		—
Reductions for increases in cash flows collected	—		—
Reductions for securities called during the period	—		—
Ending balance	$	2,974	$	7,132