Securities Available-for-Sale (Tables)

6 Months Ended

Jun. 30, 2021

Investments, Debt and Equity Securities [Abstract]

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

The following tables present information related to the Company’s portfolio of securities available-for-sale as of June 30, 2021 and December 31, 2020.

											Allowance
											for
			Gross		Gross						Investment
	Amortized		Unrealized		Unrealized			Fair			Credit
	Cost		Gains		Losses			Value			Losses
June 30, 2021	(dollars in thousands)
Securities available-for-sale
Federal agency obligations	$	34,649	$	1,197	$	(73	)	$	35,773		-
Residential mortgage pass-through  securities		261,761		2,655		(1,258	)		263,158		-
Commercial mortgage pass-through  securities		8,886		202		(293	)		8,795		-
Obligations of U.S. states and political subdivisions		133,722		2,695		(29	)		136,388		-
Corporate bonds and notes		11,459		162		-			11,621		-
Asset-backed securities		2,874		10		(4	)		2,880		-
Certificates of deposit		150		1		-			151		-
Other securities		167		-		-			167		-
Total securities available-for-sale​​	$	453,668	$	6,922	$	(1,657	)	$	458,933	$	-
December 31, 2020
Securities available-for-sale
Federal agency obligations	$	37,015	$	1,508	$	(65	)	$	38,458		N/A
Residential mortgage pass-through  securities		266,114		4,811		(41	)		270,884		N/A
Commercial mortgage pass-through  securities		6,906		203		(187	)		6,922		N/A
Obligations of U.S. states and political subdivisions		138,539		4,269		-			142,808		N/A
Corporate bonds and notes		24,925		222		(52	)		25,095		N/A
Asset-backed securities		3,521		-		(41	)		3,480		N/A
Certificates of deposit		149		2		-			151		N/A
Other securities		157		-		-			157		N/A
Total securities available-for-sale​​	$	477,326	$	11,015	$	(386	)	$	487,955		N/A

Investments Classified by Contractual Maturity Date [Table Text Block]

The following table presents information for investments in securities available-for-sale as of June 30, 2021, 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.

	June 30, 2021
	Amortized		Fair
	Cost		Value
	(dollars in thousands)
Securities available-for-sale:
Due in one year or less	$	5,614	$	5,637
Due after one year through five years		11,193		11,353
Due after five years through ten years		10,915		11,226
Due after ten years		155,132		158,597
Residential mortgage pass-through securities		261,761		263,158
Commercial mortgage pass-through securities		8,886		8,795
Other securities		167		167
Total securities available-for-sale	$	453,668	$	458,933

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

Gross gains and losses from the sales and redemptions of securities for periods presented were as follows:

	Three Months Ended June 30,					Six Months Ended June 30,
		(dollars in thousands)
	2021			2020		2021			2020
Proceeds	$	5,185		$	-	$	5,185		$	19,624
Gross gains on sales/redemption of securities		195			-		195			29
Gross losses on sales/redemptions of securities		-			-		-			-
Net gain on sales/redemptions of securities		195			-		195			29
Less: tax provision on net gain		(48	)		-		(48	)		(6	)
Net gain on sales/redemptions of securities, after tax	$	147		$	-	$	147		$	23

Schedule of Unrealized Loss on Investments [Table Text Block]

Impairment Analysis of Available-for-sale Debt Securities

The following tables indicate gross unrealized losses for which an ACL has not been recorded, aggregated by investment category and by the length of continuous time individual securities have been in an unrealized loss position as of June 30, 2021 and December 31, 2020.

	June 30, 2021
	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 obligations	$	1,565	$	(73	)	$	1,565	$	(73	)	$	-	$	-
Residential mortgage pass-through securities		142,615		(1,258	)		142,615		(1,258	)		-		-
Commercial mortgage pass-through securities		4,542		(293	)		4,542		(293	)		-		-
Obligations of U.S. states and political subdivisions		28,654		(29	)		28,654		(29	)		-		-
Corporate bonds and notes		-		-			-		-			-		-
Asset-backed securities		567		(4	)		-		-			567		(4	)
Total temporarily impaired securities	$	177,943	$	(1,657	)	$	177,376	$	(1,653	)	$	567	$	(4	)

	December 31, 2020
	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 obligations	$	8,978	$	(65	)	$	8,975	$	(65	)	$	3	$	-
Residential mortgage pass-through securities		20,895		(41	)		20,886		(41	)		9		-
Commercial mortgage pass-through securities		3,954		(187	)		3,954		(187	)		-		-
Corporate bonds and notes		3,928		(52	)		3,928		(52	)		-		-
Asset-backed securities		3,083		(41	)		622		-			2,461		(41	)
Total Temporarily Impaired Securities	$	40,838	$	(386	)	$	38,365	$	(345	)	$	2,473	$	(41	)