Derivative Financial Instruments (Details) - No Hedge Designation [Member] - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2017	Dec. 31, 2016
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount	$ 209,031	$ 187,092
Average Maturity	4 years	4 years 4 months 24 days
Fair Value	$ 851	$ 1,276
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	2,145	2,251
Liability Derivatives	1,294	975
Rate-Lock Mortgage Loan Commitments [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount	$ 34,318	$ 26,658
Average Maturity	1 month 6 days	1 month 6 days
Fair Value	$ 1,017	$ 646
Rate-Lock Mortgage Loan Commitments [Member] \| Other Assets [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	1,017	646
Rate-Lock Mortgage Loan Commitments [Member] \| Other Liabilities [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	0	0
Mandatory Commitments to Sell Mortgage Loans [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount	$ 68,023	$ 61,954
Average Maturity	1 month 6 days	1 month 6 days
Fair Value	$ (166)	$ 630
Mandatory Commitments to Sell Mortgage Loans [Member] \| Other Assets [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	0	630
Mandatory Commitments to Sell Mortgage Loans [Member] \| Other Liabilities [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	166	0
Interest Rate Swap [Member] \| Fixed Income Interest Rate [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount	$ 50,226	$ 46,121
Average Maturity	8 years	8 years 7 months 6 days
Fair Value	$ 359	$ 249
Interest Rate Swap [Member] \| Fixed Income Interest Rate [Member] \| Other Assets [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	590	493
Interest Rate Swap [Member] \| Fixed Income Interest Rate [Member] \| Other Liabilities [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	231	244
Interest Rate Swap [Member] \| Variable Income Interest Rate [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount	$ 50,226	$ 46,121
Average Maturity	8 years	8 years 7 months 6 days
Fair Value	$ (359)	$ (249)
Interest Rate Swap [Member] \| Variable Income Interest Rate [Member] \| Other Assets [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	231	244
Interest Rate Swap [Member] \| Variable Income Interest Rate [Member] \| Other Liabilities [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	590	493
Purchased Options [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount	$ 3,119	$ 3,119
Average Maturity	4 years 3 months 18 days	4 years 6 months
Fair Value	$ 307	$ 238
Purchased Options [Member] \| Other Assets [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	307	238
Purchased Options [Member] \| Other Liabilities [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	0	0
Written Options [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount	$ 3,119	$ 3,119
Average Maturity	4 years 3 months 18 days	4 years 6 months
Fair Value	$ (307)	$ (238)
Written Options [Member] \| Other Assets [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives	0	0
Written Options [Member] \| Other Liabilities [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives	$ 307	$ 238

Nominal or face amount used to calculate payments on the derivative asset.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Notional Amount
-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5580258-113959

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- Definition

Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Publisher FASB
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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=64830801&loc=SL51823488-111719

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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- References

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- References

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