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Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	$ 9,746	$ 9,717	$ 9,921	$ 9,623
Charge-offs	(469)	(373)	(4,113)	(863)
Recoveries	149	128	268	262
Provision (Credit)	300	300	3,650	750
Balance at end of period	9,726	9,772	9,726	9,772
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	4,322	3,171	4,244	3,262
Charge-offs	(295)	(35)	(3,648)	(156)
Recoveries	115	21	126	35
Provision (Credit)	92	(47)	3,512	(31)
Balance at end of period	4,234	3,110	4,234	3,110
Commercial loans secured by real estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	3,274	4,140	3,449	3,902
Charge-offs	(13)	(235)	(13)	(250)
Recoveries	2	3	38	54
Provision (Credit)	85	113	(126)	315
Balance at end of period	3,348	4,021	3,348	4,021
Real estate - mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	1,075	1,321	1,173	1,310
Charge-offs	(104)	(85)	(150)	(376)
Recoveries	24	98	86	153
Provision (Credit)	77	58	(37)	305
Balance at end of period	1,072	1,392	1,072	1,392
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	135	201	151	190
Charge-offs	(57)	(18)	(302)	(81)
Recoveries	8	6	18	20
Provision (Credit)	53	88	272	148
Balance at end of period	139	277	139	277
Allocation for general risk [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	940	884	904	959
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision (Credit)	(7)	88	29	13
Balance at end of period	$ 933	$ 972	$ 933	$ 972

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of other addition (reduction) in allowance reserve for credit loss.

+ References

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(4)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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