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Loans (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Allowance for loan losses
Beginning balance	$ 8,978	$ 7,632	$ 7,568
Provision for loan losses	3,870	3,510	1,880
Loans charged off	(2,801)	(3,204)	(3,134)
Recoveries	805	1,040	1,318
Ending balance	10,852	8,978	7,632
Commercial real estate
Allowance for loan losses
Beginning balance	3,127	2,676	2,752
Provision for loan losses	784	857	(50)
Loans charged off	(349)	(536)	(151)
Recoveries	15	130	125
Ending balance	3,577	3,127	2,676
Commercial
Allowance for loan losses
Beginning balance	1,373	1,420	1,219
Provision for loan losses	701	234	357
Loans charged off	(245)	(290)	(185)
Recoveries	45	9	29
Ending balance	1,874	1,373	1,420
Residential real estate
Allowance for loan losses
Beginning balance	1,845	1,689	1,964
Provision for loan losses	436	354	233
Loans charged off	(188)	(320)	(585)
Recoveries	112	122	77
Ending balance	2,205	1,845	1,689
Consumer
Allowance for loan losses
Beginning balance	2,160	1,663	1,419
Provision for loan losses	1,992	1,776	1,370
Loans charged off	(2,019)	(2,058)	(2,213)
Recoveries	633	779	1,087
Ending balance	2,766	2,160	1,663
Unallocated
Allowance for loan losses
Beginning balance	473	184	214
Provision for loan losses	(43)	289	(30)
Loans charged off	0	0	0
Recoveries	0	0	0
Ending balance	$ 430	$ 473	$ 184

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Provision (reversal) for loan losses expensed.

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
-Paragraph 11B
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-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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