Securities Available-for-Sale (Tables)

3 Months Ended

Mar. 31, 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 March 31, 2021 and December 31, 2020.

											Allowance
											for
			Gross		Gross						Investment
	Amortized		Unrealized		Unrealized			Fair			Credit
	Cost		Gains		Losses			Value			Losses
March 31, 2021	(dollars in thousands)
Securities available-for-sale
Federal agency obligations	$	40,507	$	1,141	$	(347	)	$	41,301		-
Residential mortgage pass-through  securities		238,406		3,628		(1,680	)		240,354		-
Commercial mortgage pass-through  securities		6,881		35		(502	)		6,414		-
Obligations of U.S. states and political subdivisions		127,809		2,925		(231	)		130,503		-
Corporate bonds and notes		17,444		221		-			17,665		-
Asset-backed securities		3,361		8		(10	)		3,359		-
Certificates of deposit		149		1		-			150		-
Other securities		2,277		-		-			2,277		-
Total securities available-for-sale​​	$	436,834	$	7,959	$	(2,770	)	$	442,023	$	-
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 March 31, 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.

	March 31, 2021
	Amortized		Fair
	Cost		Value
	(dollars in thousands)
Securities available-for-sale:
Due in one year or less	$	5,898	$	5,929
Due after one year through five years		16,369		16,625
Due after five years through ten years		14,172		14,527
Due after ten years		152,831		155,897
Residential mortgage pass-through securities		238,406		240,354
Commercial mortgage pass-through securities		6,881		6,414
Other securities		2,277		2,277
Total securities available-for-sale	$	436,834	$	442,023

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

We had no gross gains or losses from the sale of securities for three months ended March 31, 2021. Gross gains and losses for three months ended March 31, 2020 from the sales of securities for periods presented were as follows (dollars in thousands):

	Three Months Ended
	March 31,
	2021		2020
Proceeds	$	-	$	19,624
Gross gains on sales of securities		-		29
Gross losses on sales of securities		-		-
Net gains on sales of securities		-		29
Less: tax provision on net gains		-		(6	)
Net gains on sales of securities, after tax	$	-	$	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 in an unrealized loss position 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 March 31, 2021 and December 31, 2020.

	March 31, 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 obligation	$	15,923	$	(347	)	$	15,922	$	(347	)	$	1	$	-
Residential mortgage pass-through securities		125,231		(1,680	)		125,223		(1,680	)		8		-
Commercial mortgage pass-through securities		4,375		(502	)		4,375		(502	)		-		-
Obligations of U.S. states and political subdivisions		29,179		(231	)		29,179		(231	)		-		-
Corporate bonds and notes		1,000		-			1,000		-			-		-
Asset-backed securities		900		(10	)		-		-			900		(10	)
Total temporarily impaired securities	$	176,608	$	(2,770	)	$	175,699	$	(2,760	)	$	909	$	(10	)

	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 obligation	$	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	)