Securities - Amortized Cost and Estimated Fair Value of Securities - Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Securities held-to-maturity:
Amortized Cost	$ 109,311	$ 95,362
Gross Unrealized Gains	1,541	1,055
Gross Unrealized Losses	(1,031)	(1,464)
Securities held-to-maturity	109,821	94,953
Municipals - tax exempt
Securities held-to-maturity:
Amortized Cost	93,518	79,882
Gross Unrealized Gains	1,517	1,011
Gross Unrealized Losses	(863)	(1,346)
Securities held-to-maturity	94,172	79,547
Agency mortgage-backed securities
Securities held-to-maturity:
Amortized Cost	15,793	15,480
Gross Unrealized Gains	24	44
Gross Unrealized Losses	(168)	(118)
Securities held-to-maturity	$ 15,649	$ 15,406

Amount of accumulated unrealized gain on investments in debt securities classified as held-to-maturity.

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- Definition

Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity.

+ References

+ Details

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- Definition

Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

+ References

No definition available.

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- Definition

Fair value of investments in debt securities classified as held-to-maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563

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