Securities Available-for-Sale (Tables)

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Unrealized Gain (Loss) on Investments [Table Text Block]

The following table summarizes the amortized cost and fair value of securities available-for-sale at March 31, 2019 and December 31, 2018 and the corresponding amounts of gross unrealized gains and losses recognized in accumulated other comprehensive income (loss).

			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
March 31, 2019	(dollars in thousands)
Securities available-for-sale
Federal agency obligations	$	43,321	$	191	$	(232	)	$	43,280
Residential mortgage pass-through securities		255,657		381		(2,837	)		253,201
Commercial mortgage pass-through securities		6,903		23		(11	)		6,915
Obligations of U.S. states and political subdivisions		167,819		2,115		(1,764	)		168,170
Corporate bonds and notes		35,245		193		(367	)		35,071
Asset-backed securities		8,244		11		(68	)		8,187
Certificates of deposit		148		2		-			150
Other securities		1,565		-		-			1,565
Total securities available-for-sale	$	518,902	$	2,916	$	(5,279	)	$	516,539
			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
December 31, 2018	(dollars in thousands)
Securities available-for-sale
Federal agency obligations	$	45,509	$	51	$	(605	)	$	44,955
Residential mortgage pass-through securities		189,721		85		(4,602	)		185,204
Commercial mortgage pass-through securities		3,919		-		(45	)		3,874
Obligations of U.S. states and political subdivisions		141,496		1,091		(3,402	)		139,185
Corporate bonds and notes		26,308		45		(540	)		25,813
Asset-backed securities		9,685		22		(16	)		9,691
Certificates of deposit		319		3		-			322
Other securities		2,990		-		-			2,990
Total securities available-for-sale	$	419,947	$	1,297	$	(9,210	)	$	412,034

Investments Classified by Contractual Maturity Date [Table Text Block]

The following table presents information for investments in securities available-for-sale at March 31, 2019, based on scheduled maturities. Actual maturities can be expected to differ from scheduled maturities due to prepayment or early call options of the issuer. Securities not due at a single maturity date are shown separately.

	March 31, 2019
	Amortized		Fair
	Cost		Value
	(dollars in thousands)
Securities available-for-sale:
Due in one year or less	$	6,909	$	6,941
Due after one year through five years		46,300		46,324
Due after five years through ten years		32,152		32,634
Due after ten years		169,416		168,959
Residential mortgage pass-through securities		255,657		253,201
Commercial mortgage pass-through securities		6,903		6,915
Other securities		1,565		1,565
Total securities available-for-sale	$	518,902	$	516,539

Schedule of Realized Gain (Loss) [Table Text Block]

Gross gains and losses from the sales of securities for periods presented were as follows (dollars in thousands):

	Three Months Ended
	March 31,
	2019			2018
Proceeds	$	94,075		$	-
Gross gains on sales of securities		8			-
Gross losses on sales of securities		-			-
Net gains on sales of securities		8			-
Less: tax provision on net gains		(2	)		-
Net gains on sales of securities, after tax	$	6		$	-

Schedule of Unrealized Loss on Investments [Table Text Block]

The following tables indicate gross unrealized losses not recognized in income and fair value, aggregated by investment category and the length of time individual securities have been in a continuous unrealized loss position at March 31, 2019 and December 31, 2018:

	March 31, 2019
	Total					Less than 12 Months					12 Months or Longer
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses
	(dollars in thousands)
Investment Securities Available-for-Sale:
Federal agency obligation	$	23,900	$	(232	)	$	2,005	$	(7	)	$	21,895	$	(225	)
Residential mortgage pass-through securities		194,131		(2,837	)		60,001		(137	)		134,130		(2,700	)
Commercial mortgage pass-through securities		3,873		(11	)		-		-			3,873		(11	)
Obligations of U.S. states and political subdivisions		53,685		(1,764	)		531		-			53,154		(1,764	)
Corporate bonds and notes		14,547		(367	)		7,382		(42	)		7,165		(325	)
Asset-backed securities		4,536		(68	)		2,884		(49	)		1,652		(19	)
Total temporarily impaired securities	$	294,672	$	(5,279	)	$	72,803	$	(235	)	$	221,869	$	(5,044	)
	December 31, 2018
	Total					Less than 12 Months					12 Months or Longer
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses
	(dollars in thousands)
Investment Securities Available-for-Sale:
Federal agency obligation	$	35,472	$	(605	)	$	810	$	(1	)	$	34,662	$	(604	)
Residential mortgage pass-through securities		178,365		(4,602	)		42,040		(393	)		136,325		(4,209	)
Commercial mortgage pass-through securities		3,874		(45	)		-		-			3,874		(45	)
Obligations of U.S. states and political subdivisions		64,367		(3,402	)		7,765		(21	)		56,602		(3,381	)
Corporate bonds and notes		15,534		(540	)		7,767		(133	)		7,767		(407	)
Asset-backed securities		3,957		(16	)		2,219		(11	)		1,738		(5	)
Total Temporarily Impaired Securities	$	301,569	$	(9,210	)	$	60,601	$	(559	)	$	240,968	$	(8,651	)