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Investment in Securities (Tables)

12 Months Ended

Dec. 31, 2015

Investment in Securities [Abstract]

Schedule of Available-for-sale Securities

			December 31, 2015
							Gross				Gross
			Amortized				Unrealized				Unrealized
(In thousands)			Cost				Gains				Losses				Fair Value
State and political subdivisions			$	356,531			$	12,552			$	13			$	369,070
Certificates of deposit				6,626				—				—				6,626
Total			$	363,157			$	12,552			$	13			$	375,696
			December 31, 2014
							Gross				Gross
			Amortized				Unrealized				Unrealized
(In thousands)			Cost				Gains				Losses				Fair Value
State and political subdivisions			$	338,469			$	14,120			$	198			$	352,391
Certificates of deposit				3,750				—				—				3,750
Total			$	342,219			$	14,120			$	198			$	356,141

Schedule of Fair Value of Securities with Unrealized Losses

			December 31, 2015
			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			$	3,638		$	5		$	1,208		$	8		$	4,846		$	13
Certificates of deposit				—			—			—			—			—			—
Total			$	3,638		$	5		$	1,208		$	8		$	4,846		$	13
			December 31, 2014
			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			$	8,700		$	15		$	13,833		$	183		$	22,533		$	198
Certificates of deposit				—			—			—			—			—			—
Total			$	8,700		$	15		$	13,833		$	183		$	22,533		$	198

Schedule of Amortized Cost and Fair Value

			December 31, 2015
(In thousands)			Amortized Cost			Fair Value
Due in 1 year or less			$	30,621		$	30,951
Due after 1 year through 5 years				76,500			79,205
Due after 5 years through 10 years				139,680			145,780
Due after 10 years				116,356			119,760
No stated maturity				—			—
Total			$	363,157		$	375,696

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803

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-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563

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