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Investment in Securities (Tables)

12 Months Ended

Dec. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities

The amortized cost, gross unrealized gains, gross unrealized losses and fair value of debt and equity securities are summarized as follows:

		December 31, 2018
					Gross			Gross
		Amortized			Unrealized			Unrealized
(In thousands)		Cost			Gains			Losses			Fair Value
State and political subdivisions		$	332,732		$	3,791		$	1,806		$	334,717
U.S. government agencies			106,153			86			1,417			104,822
Certificates of deposit			1,995			—			—			1,995
Total		$	440,880		$	3,877		$	3,223		$	441,534

		December 31, 2017
					Gross			Gross
		Amortized			Unrealized			Unrealized
(In thousands)		Cost			Gains			Losses			Fair Value
State and political subdivisions		$	408,165		$	9,528		$	661		$	417,032
U.S. government agencies			46,222			—			722			45,500
Certificates of deposit			7,991			—			—			7,991
Total		$	462,378		$	9,528		$	1,383		$	470,523

Schedule of Fair Value of Securities with Unrealized Losses

The fair values of securities with unrealized losses are as follows:

		December 31, 2018
		Less than 12 months						12 months or more						Total
		Estimated			Unrealized			Estimated			Unrealized			Estimated			Unrealized
(In thousands)		Fair Value			Losses			Fair Value			Losses			Fair value			Losses
State and political subdivisions		$	91,248		$	556		$	60,546		$	1,250		$	151,794		$	1,806
U.S. government agencies			30,409			130			38,005			1,287			68,414			1,417
Certificates of deposit			—			—			—			—			—			—
Total		$	121,657		$	686		$	98,551		$	2,537		$	220,208		$	3,223

		December 31, 2017
		Less than 12 months						12 months or more						Total
		Estimated			Unrealized			Estimated			Unrealized			Estimated			Unrealized
(In thousands)		Fair Value			Losses			Fair Value			Losses			Fair value			Losses
State and political subdivisions		$	34,755		$	123		$	31,251		$	538		$	66,006		$	661
U.S. government agencies			34,183			376			11,317			346			45,500			722
Certificates of deposit			—			—			—			—			—			—
Total		$	68,938		$	499		$	42,568		$	884		$	111,506		$	1,383

Schedule of Amortized Cost and Fair Value

The amortized cost and fair value of debt and equity securities by contractual maturity are shown in the following table. Expected maturities may differ from contractual maturities because borrowers have the right to prepay obligations with or without prepayment penalties.

		December 31, 2018
(In thousands)		Amortized Cost			Fair Value
Due in 1 year or less		$	7,956		$	7,987
Due after 1 year through 5 years			125,746			126,252
Due after 5 years through 10 years			242,119			244,118
Due after 10 years			65,059			63,177
No stated maturity			—			—
Total		$	440,880		$	441,534

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- Definition

Tabular disclosure of amortized cost and fair value of investment securities by contractual maturity.

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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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- Definition

For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563

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