Loans and Allowance for Loan Losses (Details 10) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commercial
Loans evaluated for impairment by loan segment
Recorded Investment, With no related allowance recorded	$ 106	$ 232
Recorded Investment, With related allowance recorded		1,115
Recorded Investment, Total	106	1,347
Unpaid Principal Balance, with no related allowance	106	264
Unpaid Principal Balance, with related allowance		1,552
Unpaid Principal Balance, Total	106	1,816
Related Allowance, with related allowance		834
Related Allowance, Total		834
Average Recorded Investment, with no related allowance recorded	146	322	$ 257
Average Recorded Investment, with related allowance recorded	279	1,341	311
Average Recorded Investment, Total	425	1,663	568
Interest Income Recognized, with no related allowance	8	13	17
Interest Income Recognized, with related allowance	0	0	0
Interest Income Recognized, Total	8	13	17
Commercial real estate
Loans evaluated for impairment by loan segment
Recorded Investment, With no related allowance recorded	5,681	7,222
Recorded Investment, With related allowance recorded	1,179	1,243
Recorded Investment, Total	6,860	8,465
Unpaid Principal Balance, with no related allowance	5,789	7,424
Unpaid Principal Balance, with related allowance	1,179	1,243
Unpaid Principal Balance, Total	6,968	8,667
Related Allowance, with related allowance	178	178
Related Allowance, Total	178	178
Average Recorded Investment, with no related allowance recorded	6,072	4,842	4,069
Average Recorded Investment, with related allowance recorded	1,209	1,160	1,430
Average Recorded Investment, Total	7,281	6,002	5,499
Interest Income Recognized, with no related allowance	335	181	158
Interest Income Recognized, with related allowance	85	84	73
Interest Income Recognized, Total	$ 420	$ 265	$ 231

Impaired financing receivable with related and no related allowance.

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
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-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524

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Amount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.

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