Investments (Tables)

9 Months Ended

Sep. 30, 2016

Investments [Abstract]

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

The amortized cost and estimated fair values of the Company's securities are shown in the following table (in thousands):

	September 30, 2016								December 31, 2015
	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	$	4	$	—	$	—	$	4	$	5	$	—	$	—	$	5
Obligations of states and
political subdivisions	62,845		1,669		79		64,435		49,725		979		7		50,697
Mortgage-backed securities:
U.S. government agencies	327,608		5,896		302		333,202		287,933		2,285		2,021		288,197
Private label	1,000		2		—		1,002		1,222		9		—		1,231
Trust preferred securities	6,049		1,206		844		6,411		6,550		463		1,155		5,858
Corporate securities	23,927		613		126		24,414		18,793		221		321		18,693
Total Debt Securities	421,433		9,386		1,351		429,468		364,228		3,957		3,504		364,681
Marketable equity  securities	2,136		1,577		—		3,713		2,131		1,142		—		3,273
Investment funds	1,525		11		—		1,536		1,525		—		13		1,512
Total Securities
Available-for-Sale	$	425,094	$	10,974	$	1,351	$	434,717	$	367,884	$	5,099	$	3,517	$	369,466

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

	September 30, 2016								December 31, 2015
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value		Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Securities held-to-maturity:
Mortgage-backed securities
U.S. government agencies	$	75,499	$	3,494	$	—	$	78,993	$	84,937	$	1,949	$	76	$	86,810
Trust preferred securities	4,000		—		—		4,000		4,000		—		—		4,000
Total Securities
Held-to-Maturity	$	79,499	$	3,494	$	—	$	82,993	$	88,937	$	1,949	$	76	$	90,810
Other investment securities:
Non-marketable equity securities	$	11,895	$	—	$	—	$	11,895	$	12,915	$	—	$	—	$	12,915
Total Other Investment
Securities	$	11,895	$	—	$	—	$	11,895	$	12,915	$	—	$	—	$	12,915

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):

	September 30, 2016
	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	$	12,879	$	79	$	—	$	—	$	12,879	$	79
Mortgage-backed securities:
U.S. Government agencies	70,593		146		9,237		156		79,830		302
Trust preferred securities	—		—		4,678		844		4,678		844
Corporate securities	2,273		126		—		—		2,273		126
Total	$	85,745	$	351	$	13,915	$	1,000	$	99,660	$	1,351

	December 31, 2015
	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	$	2,406	$	5	$	128	$	2	$	2,534	$	7
Mortgage-backed securities:
U.S. Government agencies	129,612		688		34,044		1,333		163,656		2,021
Trust preferred securities	—		—		4,769		1,155		4,769		1,155
Corporate securities	10,856		174		2,231		147		13,087		321
Investment funds	—		—		1,488		13		1,488		13
Total	$	142,874	$	867	$	42,660	$	2,650	$	185,534	$	3,517

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

The amortized cost and estimated fair value of debt securities at September 30, 2016, 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
Securities Available-for-Sale
Due in one year or less	$	3,640	$	3,662
Due after one year through five years	25,215		17,395
Due after five years through ten years	59,193		68,514
Due after ten years	333,385		339,897
	$	421,433	$	429,468
Securities Held-to-Maturity
Due in one year or less	$	—	$	—
Due after one year through five years	—		—
Due after five years through ten years	—		—
Due after ten years	79,499		82,993
	$	79,499	$	82,993

Gross Gains And Losses Realized

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

	Three months ended September 30,					Nine months ended September 30,
	2016			2015		2016			2015
Gross realized gains	$	2,722		$	—	$	3,978		$	2,130
Gross realized losses	(54		)	—		(465		)	—
Net investment security gains	$	2,668		$	—	$	3,513		$	2,130