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Investments (Tables)

6 Months Ended

Jun. 30, 2021

Investments [Abstract]

Aggregate Carrying And Approximate Market Values Of Available-For-Sale Securities

			June 30, 2021												December 31, 2020
			Amortized Cost			Gross Unrealized Gains			Gross Unrealized Losses			Estimated Fair Value			Amortized Cost			Gross Unrealized Gains			Gross Unrealized Losses			Estimated Fair Value
Securities available-for-sale:
Obligations of states and
political subdivisions			271,658			9,853			167			281,344			266,483			11,467			139			277,811
Mortgage-backed securities:
U.S. government agencies			987,297			24,937			2,327			1,009,907			815,682			34,807			105			850,384
Private label			9,271			786			—			10,057			9,976			916			—			10,892
Trust preferred securities			4,563			—			280			4,283			4,557			—			457			4,100
Corporate securities			32,377			1,468			—			33,845			31,465			2,146			1			33,610
Total Debt Securities			1,305,166			37,044			2,774			1,339,436			1,128,163			49,336			702			1,176,797
Certificates of deposit held for investment			1,245			—			—			1,245			1,992			—			—			1,992
Total Securities Available-for-Sale			$	1,306,411		$	37,044		$	2,774		$	1,340,681		$	1,130,155		$	49,336		$	702		$	1,178,789

Gross Unrealized Losses And Fair Value Of Investments

The following table shows the gross unrealized losses and fair value of the Company’s investments aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):

			June 30, 2021
			Less Than Twelve Months						Twelve Months or Greater						Total
			Estimated Fair Value			Unrealized Loss			Estimated Fair Value			Unrealized Loss			Estimated Fair Value			Unrealized Loss
Securities available-for-sale:
Obligations of states and political subdivisions			$	10,876		$	102		$	2,419		$	65		$	13,295		$	167
Mortgage-backed securities:
U.S. Government agencies			349,736			2,314			32,229			13			381,965			2,327
Trust preferred securities			—			—			4,283			280			4,283			280
Total available-for-sale			$	360,612		$	2,416		$	38,931		$	358		$	399,543		$	2,774

			December 31, 2020
			Less Than Twelve Months						Twelve Months or Greater						Total
			Estimated Fair Value			Unrealized Loss			Estimated Fair Value			Unrealized Loss			Estimated Fair Value			Unrealized Loss
Securities available-for-sale:
Obligations of states and political subdivisions			$	10,578		$	139		$	—		$	—		$	10,578		$	139
Mortgage-backed securities:
U.S. Government agencies			62,412			105			35			—			62,447			105
Trust preferred securities			—			—			4,100			457			4,100			457
Corporate securities			488			1			—			—			488			1
Total available-for-sale			$	73,478		$	245		$	4,135		$	457		$	77,613		$	702

Amortized Cost And Estimated Fair Value Of Debt Securities By Contractual Maturity

The amortized cost and estimated fair value of debt securities at June 30, 2021, by contractual maturity, is shown in the following table (in thousands).  Expected maturities will differ from contractual maturities because the issuers of the securities may have the right to prepay obligations without prepayment penalties.  Mortgage-backed securities have been allocated to their respective maturity groupings based on their contractual maturity.

			Amortized Cost			Estimated Fair Value
Available-for-Sale Debt Securities
Due in one year or less			$	4,121		$	4,176
Due after one year through five years			41,677			43,217
Due after five years through ten years			261,225			275,126
Due after ten years			998,143			1,016,917
Total			$	1,305,166		$	1,339,436

Gross Gains And Losses Realized

Gross gains and gross losses recognized by the Company from investment security transactions are summarized in the table below (in thousands):

			Three months ended June 30,						Six months ended June 30,
			2021			2020			2021			2020
Gross realized gains on securities sold			$	29		$	—		$	312		$	133
Gross realized losses on securities sold			—			(6)			—			(77)
Net investment security gains (losses)			$	29		$	(6)		$	312		$	56
Gross unrealized gains recognized on equity securities still held			$	2,216		$	708		$	2,720		$	837
Gross unrealized losses recognized on equity securities still held			(1,806)			(466)			(2,361)			(2,996)
Net unrealized gains (losses) recognized on equity securities still held			$	410		$	242		$	359		$	(2,159)

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- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

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Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.

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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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