Loans and Allowance for Loan Losses (Allowance for Loan Losses, by Segment Portfolio) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	$ 14,240	$ 19,008	$ 15,195	$ 20,345
Charge-offs	(2,041)	(1,567)	(3,135)	(2,562)
Recoveries	999	1,336	1,673	2,132
Provision (recovery of provision)	507	(788)	(28)	(1,926)
Balance, end of period	13,705	17,989	13,705	17,989
Commercial and Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	2,044	3,398	2,402	3,915
Charge-offs	61	(257)	(98)	(306)
Recoveries	(32)	428	221	649
Provision (recovery of provision)	(1,006)	(857)	(1,458)	(1,546)
Balance, end of period	1,067	2,712	1,067	2,712
Real estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	1,296	3,120	1,769	3,163
Charge-offs	(9)	(4)	(9)	(85)
Recoveries	174	179	310	375
Provision (recovery of provision)	725	(1,088)	116	(1,246)
Balance, end of period	2,186	2,207	2,186	2,207
Real Estate - Mortgage, 1-4 Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	4,375	5,623	5,141	5,847
Charge-offs	(610)	(251)	(674)	(376)
Recoveries	247	171	377	309
Provision (recovery of provision)	54	(26)	(778)	(263)
Balance, end of period	4,066	5,517	4,066	5,517
Real estate - Mortgage, Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	2,543	3,152	2,328	4,179
Charge-offs	(195)	(261)	(195)	(268)
Recoveries	385	328	425	386
Provision (recovery of provision)	(725)	87	(550)	(991)
Balance, end of period	2,008	3,306	2,008	3,306
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Balance, beginning of period	3,982	3,715	3,555	3,241
Charge-offs	(1,288)	(794)	(2,159)	(1,527)
Recoveries	225	230	340	413
Provision (recovery of provision)	1,459	1,096	2,642	2,120
Balance, end of period	$ 4,378	$ 4,247	$ 4,378	$ 4,247

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

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- Definition

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

+ References

+ Details

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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.

+ References

No definition available.

+ Details

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- Definition

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

+ References

+ Details

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ 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)(2)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

+ Details

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