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.

Reference 1: 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 7

-Subparagraph d

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (b)(1)(ii)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 4: 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 before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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)

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Loans and Allowance - Composition of Loan Portfolio by Loan Class (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Loans:
Loans	$ 2,925,457		$ 2,902,209
Allowance for loan losses	(66,224)	(68,202)	(69,366)	(69,493)	(70,143)	(70,898)
Total Loans	2,859,233		2,832,843
Commercial and industrial loans
Loans:
Loans	652,356		622,579
Agriculture production financing and other loans to farmers
Loans:
Loans	98,489		112,527
Real estate loans - Construction
Loans:
Loans	149,875		98,639
Real estate loans - Commercial and farm land
Loans:
Loans	1,264,180		1,266,682
Real estate loans - Residential
Loans:
Loans	452,277		473,537
Allowance for loan losses	(14,706)	(15,113)	(14,157)	(13,127)	(14,788)	(12,343)
Real estate loans - Home equity
Loans:
Loans	206,816		203,406
Individuals' loans for household and other personal expenditures
Loans:
Loans	70,380		75,748
Allowance for loan losses	(2,803)	(2,885)	(2,593)	(2,629)	(2,431)	(2,902)
Lease financing receivables, net of unearned income
Loans:
Loans	1,815		2,590
Allowance for loan losses	(56)	(36)				(3)
Other Loans
Loans:
Loans	$ 29,269		$ 46,501