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Investments (Tables)

6 Months Ended

Jun. 30, 2019

Investments [Abstract]

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

	June 30, 2019												December 31, 2018
	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:
U.S. Treasuries and U.S.
government agencies	$	1,778		$	25		$	—		$	1,803		$	5,713		$	20		$	—		$	5,733
Obligations of states and
political subdivisions	115,311			4,045			30			119,326			128,089			1,033			1,052			128,070
Mortgage-backed securities:
U.S. government agencies	627,953			11,898			1,949			637,902			561,799			1,950			12,991			550,758
Private label	11,515			554			—			12,069			11,948			95			—			12,043
Trust preferred securities	4,778			33			657			4,154			4,774			25			—			4,799
Corporate securities	16,778			470			—			17,248			16,795			30			167			16,658
Total Debt Securities	778,113			17,025			2,636			792,502			729,118			3,153			14,210			718,061
Certificates of deposit held for investment	3,735			—			—			3,735			3,735			—			—			3,735
Total Securities Available-for-Sale	$	781,848		$	17,025		$	2,636		$	796,237		$	732,853		$	3,153		$	14,210		$	721,796

Aggregate Carrying And Approximate Market Values Of Held-To-Maturity Securities

Securities held-to-maturity:
Mortgage-backed securities:
U.S. government agencies	$	53,362		$	1,360		$	45		$	54,677		$	56,827		$	173		$	294		$	56,706
Trust preferred securities	—			—			—			—			4,000			—			—			4,000
Total Securities Held-to-Maturity	$	53,362		$	1,360		$	45		$	54,677		$	60,827		$	173		$	294		$	60,706

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, 2019
	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	$	—		$	—		$	5,793		$	30		$	5,793		$	30
Mortgage-backed securities:
U.S. Government agencies	38			—			193,227			1,949			193,265			1,949
Trust preferred securities	4,602			657			—			—			4,602			657
Total available-for-sale	$	4,640		$	657		$	199,020		$	1,979		$	203,660		$	2,636
Securities held-to-maturity:
Mortgage-backed securities:
U.S. Government agencies	$	—		$	—		$	5,705		$	45		$	5,705		$	45
Total held-to-maturity	$	—		$	—		$	5,705		$	45		$	5,705		$	45

	December 31, 2018
	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	$	11,837		$	272		$	22,068		$	780		$	33,905		$	1,052
Mortgage-backed securities:
U.S. Government agencies	84,975			1,593			282,560			11,398			367,535			12,991
Corporate securities	12,995			167			—			—			12,995			167
Total available-for-sale	$	109,807		$	2,032		$	304,628		$	12,178		$	414,435		$	14,210
Securities held-to-maturity:
Mortgage-backed securities
U.S. Government agencies	$	28,274		$	126		$	5,960		$	168		$	34,234		$	294
Total held-to-maturity	$	28,274		$	126		$	5,960		$	168		$	34,234		$	294

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, 2019, by contractual maturity, are 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	$	1,373		$	1,375
Due after one year through five years	17,051			17,402
Due after five years through ten years	183,757			188,514
Due after ten years	575,932			585,212
Total	$	778,113		$	792,503
Held-to-Maturity Debt Securities
Due in one year or less	$	—		$	—
Due after one year through five years	—			—
Due after five years through ten years	4,932			5,434
Due after ten years	48,430			49,243
Total	$	53,362		$	54,677

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,
	2019			2018			2019			2018
Gross realized gains on securities sold	$	21		$	—		$	110		$	—
Gross realized losses on securities sold	—			—			(1		)	—
Net investment security gains	$	21		$	—		$	109		$	—
Gross unrealized gains recognized on equity securities still held	$	97		$	492		$	241		$	772
Gross unrealized losses recognized on equity securities still held	$	16		$	—		(53		)	—
Net unrealized gains (losses) recognized on equity securities still held	$	113		$	492		$	188		$	772

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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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