Loans - Changes in the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Changes in the Allowance for Loan Losses
Balance, beginning of period	$ 18,926	$ 18,379
Charge-offs	(117)	(214)
Recoveries	248	449
Net (charge-offs) recoveries	131	235
Provision (credit) for loan losses	401	(60)
Balance, end of period	19,458	18,554
Commercial
Changes in the Allowance for Loan Losses
Balance, beginning of period	10,748	11,187
Charge-offs	(117)	(212)
Recoveries	32	436
Net (charge-offs) recoveries	(85)	224
Provision (credit) for loan losses	616	(555)
Balance, end of period	11,279	10,856
Real estate
Changes in the Allowance for Loan Losses
Balance, beginning of period	8,076	7,070
Charge-offs		(2)
Recoveries	216	13
Net (charge-offs) recoveries	216	11
Provision (credit) for loan losses	(224)	473
Balance, end of period	8,068	7,554
Consumer
Changes in the Allowance for Loan Losses
Balance, beginning of period	102	122
Provision (credit) for loan losses	9	22
Balance, end of period	$ 111	$ 144

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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- Definition

Amount, after recoveries, of loans and leases that have been written-off.

+ References

No definition available.

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- Definition

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
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-Publisher FASB
-Name Accounting Standards Codification
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-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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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section L
-Subsection 1

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Amount of expense related to estimated loss from loan and lease transactions.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 225
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