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Investment Securities (Tables)

9 Months Ended

Sep. 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 September 30, 2021 and December 31, 2020.

																Allowance
																for
					Gross			Gross								Investment
		Amortized			Unrealized			Unrealized				Fair				Credit
		Cost			Gains			Losses				Value				Losses
September 30, 2021		(dollars in thousands)
Securities available-for-sale
Federal agency obligations		$	50,016		$	1,032		$	-			$	51,048		$	-
Residential mortgage pass-through securities			255,488			2,640			(2,073	)			256,055			-
Commercial mortgage pass-through securities			10,859			135			(468	)			10,526			-
Obligations of U.S. states and political subdivisions			129,632			1,693			(1,051	)			130,274			-
Corporate bonds and notes			10,965			124			-				11,089			-
Asset-backed securities			2,718			6			(2	)			2,722			-
Certificates of deposit			149			1			-				150			-
Other securities			1,020			-			-				1,020			-
Total securities available-for-sale​​		$	460,847		$	5,631		$	(3,594	)		$	462,884		$	-
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 September 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.

		September 30, 2021
		Amortized			Fair
		Cost			Value
		(dollars in thousands)
Securities available-for-sale:
Due in one year or less		$	4,439		$	4,451
Due after one year through five years			9,911			10,024
Due after five years through ten years			7,777			8,029
Due after ten years			171,353			172,779
Residential mortgage pass-through securities			255,488			256,055
Commercial mortgage pass-through securities			10,859			10,526
Other securities			1,020			1,020
Total securities available-for-sale		$	460,847		$	462,884

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 September 30,								Nine Months Ended September 30,
			(dollars in thousands)
		2021				2020				2021				2020
Proceeds		$	-			$	-			$	5,185			$	19,624
Gross gains on sales/redemption of securities			-				-				195				29
Gross losses on sales/redemptions of securities			-				-				-				-
Net gains on sales/redemptions of securities			-				-				195				29
Less: tax provision on net gains			-				-				(48	)			(6	)
Net gains on sales/redemptions of securities, after tax		$	-			$	-			$	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 September 30, 2021 and December 31, 2020.

	September 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:
Residential mortgage pass-through securities	$	171,592		$	(2,073	)		$	171,592		$	(2,073	)		$	-		$	-
Commercial mortgage pass-through securities		6,349			(468	)			2,658			(67	)			3,691			(401	)
Obligations of U.S. states and political subdivisions		71,938			(1,051	)			71,938			(1,051	)			-			-
Asset-backed securities		1,389			(2	)			840			-				549			(2	)
Total temporarily impaired securities	$	251,268		$	(3,594	)		$	247,028		$	(3,191	)		$	4,240		$	(403	)

	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	)

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Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales.

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