Isabella Bank (ISBA) 10-Q 8 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 01, 2013
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'ISABELLA BANK CORP	'
Entity Central Index Key	'0000842517	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-13	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Current Fiscal Year End Date	'--12-31	'
Entity Common Stock, Shares Outstanding	'	7,716,759
Entity Filer Category	'Accelerated Filer	'

Interim_Condensed_Consolidated

Interim Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Cash and cash equivalents	'	'
Cash and demand deposits due from banks	$20,255	$22,634
Interest bearing balances due from banks	1,349	2,286
Total cash and cash equivalents	21,604	24,920
Certificates of deposit held in other financial institutions	2,045	4,465
Trading securities	745	1,573
AFS securities (amortized cost of $500,931 in 2013 and $490,420 in 2012)	501,057	504,010
Mortgage loans AFS	712	3,633
Loans	'	'
Commercial	388,973	371,505
Agricultural	92,927	83,606
Residential real estate	291,825	284,148
Consumer	34,124	33,494
Total loans	807,849	772,753
Less allowance for loan losses	11,600	11,936
Net loans	796,249	760,817
Premises and equipment	26,018	25,787
Corporate owned life insurance	24,213	22,773
Accrued interest receivable	6,584	5,227
Equity securities without readily determinable fair values	18,353	18,118
Goodwill and other intangible assets	46,361	46,532
Other assets	15,400	12,784
TOTAL ASSETS	1,459,341	1,430,639
Deposits	'	'
Noninterest bearing	143,013	143,735
NOW accounts	186,630	181,259
Certificates of deposit under $100 and other savings	462,249	455,546
Certificates of deposit over $100	232,039	237,127
Total deposits	1,023,931	1,017,667
Borrowed funds	266,001	241,001
Accrued interest payable and other liabilities	8,104	7,482
Total liabilities	1,298,036	1,266,150
Shareholders' equity	'	'
Common stock — no par value 15,000,000 shares authorized; issued and outstanding 7,709,781 shares (including 9,583 shares held in the Rabbi Trust) in 2013 and 7,671,846 shares (including 5,130 shares held in the Rabbi Trust) in 2012	137,356	136,580
Shares to be issued for deferred compensation obligations	4,035	3,734
Retained earnings	23,916	19,168
Accumulated other comprehensive income	-4,002	5,007
Total shareholders' equity	161,305	164,489
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$1,459,341	$1,430,639

Interim_Condensed_Consolidated1

Interim Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Available-for-sale securities, amortized cost	$500,931	$490,420
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	7,709,781	7,671,846
Common stock, shares outstanding	7,709,781	7,671,846
Common stock, shares to be issued	9,583	5,130

Interim_Condensed_Consolidated2

Interim Condensed Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Interest income	'	'	'	'
Loans, including fees	$10,330	$10,918	$30,940	$32,707
AFS securities	'	'	'	'
Taxable	1,787	1,878	5,419	5,755
Nontaxable	1,275	1,232	3,753	3,652
Trading securities	7	15	30	79
Federal funds sold and other	106	121	331	363
Total interest income	13,505	14,164	40,473	42,556
Interest expense	'	'	'	'
Deposits	1,742	2,203	5,438	7,083
Borrowings	994	1,036	2,900	3,289
Total interest expense	2,736	3,239	8,338	10,372
Net interest income	10,769	10,925	32,135	32,184
Provision for loan losses	351	200	866	1,100
Net interest income after provision for loan losses	10,418	10,725	31,269	31,084
Noninterest income	'	'	'	'
Service charges and fees	2,001	1,543	5,292	4,800
Gain on sale of mortgage loans	215	422	822	1,080
Earnings on corporate owned life insurance policies	185	171	544	519
Gain on sale of AFS securities	72	116	171	1,119
Other	389	507	1,216	1,326
Total noninterest income	2,862	2,759	8,045	8,844
Noninterest expenses	'	'	'	'
Compensation and benefits	5,340	5,130	16,021	15,663
Furniture and equipment	1,303	1,113	3,684	3,373
Occupancy	676	649	1,982	1,889
AFS security impairment loss	'	'	'	'
Total OTTI impairment loss	0	0	0	486
Portion of loss reported in other comprehensive income	0	0	0	-204
Net AFS security impairment loss	0	0	0	282
Other	2,001	2,236	6,148	6,682
Total noninterest expenses	9,320	9,128	27,835	27,889
Income before federal income tax expense	3,960	4,356	11,479	12,039
Federal income tax expense	674	899	1,893	2,344
NET INCOME	$3,286	$3,457	$9,586	$9,695
Earnings per share	'	'	'	'
Basic	$0.43	$0.45	$1.25	$1.28
Diluted	$0.42	$0.44	$1.22	$1.24
Cash dividends per basic share	$0.21	$0.20	$0.63	$0.60

Interim_Condensed_Consolidated3

Interim Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Statement of Other Comprehensive Income [Abstract]	'		'		'		'
Net income	$3,286		$3,457		$9,586		$9,695
Unrealized gains (losses) on AFS securities:	'		'		'		'
Unrealized gains (losses) arising during the period	665		2,990		-13,293		5,209
Reclassification adjustment for net realized (gains) losses included in net income	-72		-116		-171		-1,119
Reclassification adjustment for impairment loss included in net income	0		0		0		282
Net unrealized gains (losses)	593		2,874		-13,464		4,372
Tax effect (1)	-447	[1]	-763	[1]	4,455	[1]	-790	[1]
Other comprehensive income (loss)	146		2,111		-9,009		3,582
Comprehensive income (loss)	$3,432		$5,568		$577		$13,277
[1]	See “Note 13 – Accumulated Other Comprehensive Income (Loss)” for tax effect reconciliation.

Interim_Condensed_Consolidated4

Interim Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (USD $)	Total	Common Stock	Shares to be Issued for Deferred Compensation Obligations	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
In Thousands, except Share data
Beginning balances at Dec. 31, 2011	$154,783	$134,734	$4,524	$13,036	$2,489
Beginning balances, shares at Dec. 31, 2011	'	7,589,226	'	'	'
Comprehensive income (loss)	13,277	'	'	9,695	3,582
Issuance of common stock	2,025	2,025	'	'	'
Issuance of common stock, shares	'	85,227	'	'	'
Common stock transferred from the Rabbi Trust to satisfy deferred compensation obligations	0	95	-95	'	'
Share based payment awards under equity compensation plan	496	'	496	'	'
Common stock purchased for deferred compensation obligations	-361	-361	'	'	'
Common stock repurchased pursuant to publicly announced repurchase plan	-1,520	-1,520	'	'	'
Common stock repurchased pursuant to publicly announced repurchase plan, shares	'	-63,103	'	'	'
Cash dividends	-4,553	'	'	-4,553	'
Ending balances at Sep. 30, 2012	164,147	134,973	4,925	18,178	6,071
Ending balances, shares at Sep. 30, 2012	'	7,611,350	'	'	'
Beginning balances at Dec. 31, 2012	164,489	136,580	3,734	19,168	5,007
Beginning balances, shares at Dec. 31, 2012	7,671,846	7,671,846	'	'	'
Comprehensive income (loss)	577	'	'	9,586	-9,009
Issuance of common stock	2,754	2,754	'	'	'
Issuance of common stock, shares	'	111,904	'	'	'
Common stock transferred from the Rabbi Trust to satisfy deferred compensation obligations	0	122	-122	'	'
Share based payment awards under equity compensation plan	423	'	423	'	'
Common stock purchased for deferred compensation obligations	-285	-285	'	'	'
Common stock repurchased pursuant to publicly announced repurchase plan	-1,815	-1,815	'	'	'
Common stock repurchased pursuant to publicly announced repurchase plan, shares	'	-73,969	'	'	'
Cash dividends	-4,838	'	'	-4,838	'
Ending balances at Sep. 30, 2013	$161,305	$137,356	$4,035	$23,916	($4,002)
Ending balances, shares at Sep. 30, 2013	7,709,781	7,709,781	'	'	'

Interim_Condensed_Consolidated5

Interim Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Stockholders' Equity [Abstract]	'	'	'	'
Cash dividends per share	$0.21	$0.20	$0.63	$0.60

Interim_Condensed_Consolidated6

Interim Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
OPERATING ACTIVITIES	'	'
Net income	$9,586	$9,695
Reconciliation of net income to net cash provided by operations:	'	'
Provision for loan losses	866	1,100
Impairment of foreclosed assets	131	17
Depreciation	1,903	1,802
Amortization of OMSRs	453	526
Amortization of acquisition intangibles	171	200
Net amortization of AFS securities	1,595	1,683
AFS security impairment loss	0	282
(Gain) loss on sale of AFS securities	-171	-1,119
Net unrealized (gains) losses on trading securities	23	41
Net gain on sale of mortgage loans	-822	-1,080
Net unrealized (gains) losses on borrowings measured at fair value	0	-33
Increase in cash value of corporate owned life insurance policies	-544	-519
Share-based payment awards under equity compensation plan	423	496
Origination of loans held for sale	-45,992	-69,503
Proceeds from loan sales	49,735	70,968
Net changes in operating assets and liabilities which provided (used) cash:	'	'
Trading securities	805	2,881
Accrued interest receivable	-1,357	-717
Other assets	319	-1,938
Accrued interest payable and other liabilities	622	78
Net cash provided by (used in) operating activities	17,746	14,860
INVESTING ACTIVITIES	'	'
Net change in certificates of deposit held in other financial institutions	2,420	3,249
Activity in AFS securities	'	'
Sales	16,229	40,677
Maturities and calls	70,164	58,598
Purchases	-98,328	-138,043
Loan principal originations, net	-37,385	-19,461
Proceeds from sales of foreclosed assets	1,788	1,446
Purchases of premises and equipment	-2,134	-2,647
Purchases of corporate owned life insurance policies	-1,092	0
Proceeds from the redemption of corporate owned life insurance policies	196	0
Net cash provided by (used in) investing activities	-48,142	-56,181
FINANCING ACTIVITIES	'	'
Acceptances and withdrawals of deposits, net	6,264	31,327
Increase in other borrowed funds	25,000	10,477
Cash dividends paid on common stock	-4,838	-4,553
Proceeds from issuance of common stock	2,754	2,025
Common stock repurchased	-1,815	-1,520
Common stock purchased for deferred compensation obligations	-285	-361
Net cash provided by (used in) financing activities	27,080	37,395
Increase (decrease) in cash and cash equivalents	-3,316	-3,926
Cash and cash equivalents at beginning of period	24,920	28,590
Cash and cash equivalents at end of period	21,604	24,664
SUPPLEMENTAL CASH FLOWS INFORMATION:	'	'
Interest paid	8,376	10,526
Federal income taxes paid	1,333	1,467
SUPPLEMENTAL NONCASH INVESTING AND FINANCING INFORMATION:	'	'
Transfers of loans to foreclosed assets	$1,087	$1,588

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
BASIS OF PRESENTATION	'
	Note 1 – Basis of Presentation
	As used in these notes as well as in Management's Discussion and Analysis of Financial Condition and Results of Operations, references to “Isabella,” “we,” “our,” “us,” and similar terms refer to the consolidated entity consisting of Isabella Bank Corporation and its subsidiaries. Isabella Bank Corporation refers solely to the parent holding company, and Isabella Bank refers to Isabella Bank Corporation’s subsidiary, Isabella Bank.
	The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In our opinion, all adjustments considered necessary for a fair presentation have been included. Operating results for the three and nine month periods ended September 30, 2013 are not necessarily indicative of the results that may be expected for the year ending December 31, 2013. For further information, refer to the consolidated financial statements and footnotes thereto included in our annual report for the year ended December 31, 2012.
	Our accounting policies are materially the same as those discussed in Note 1 to the Consolidated Financial Statements included in our annual report for the year ended December 31, 2012.

Computation_of_Earnings_Per_Sh

Computation of Earnings Per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
COMPUTATION OF EARNINGS PER SHARE	'
	Note 2 – Computation of Earnings Per Share
	Basic earnings per share represents income available to common shareholders divided by the weighted average number of common shares outstanding during the period. Diluted earnings per share reflects additional common shares that would have been outstanding if dilutive potential common shares had been issued. Potential common shares that may be issued relate solely to outstanding shares in the Directors Plan.
	Earnings per common share have been computed based on the following:
		Three Months Ended				Nine Months Ended
		September 30				September 30
		2013		2012		2013		2012
	Average number of common shares outstanding for basic calculation	7,698,066		7,600,443		7,689,350		7,595,806
	Average potential effect of shares in the Directors Plan (1)	170,420		206,233		168,020		203,250
	Average number of common shares outstanding used to calculate diluted earnings per common share	7,868,486		7,806,676		7,857,370		7,799,056
	Net income	$	3,286	$	3,457	$	9,586	$	9,695
	Earnings per share
	Basic	$	0.43	$	0.45	$	1.25	$	1.28
	Diluted	$	0.42	$	0.44	$	1.22	$	1.24
	(1)	Exclusive of shares held in the Rabbi Trust

Recently_Adopted_Accounting_St

Recently Adopted Accounting Standards Update	9 Months Ended
	Sep. 30, 2013
Accounting Changes and Error Corrections [Abstract]	'
RECENTLY ADOPTED ACCOUNTING STANDARDS UPDATE	'
	Note 3 – Recently Adopted Accounting Standards Update
	ASU No. 2013-02: “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income”
	In February 2013, ASU No. 2013-02 amended ASC Topic 220, “Comprehensive Income” to require disclosures related to reclassifications out of AOCI in one place. The ASU also requires the disclosure of reclassifications out of AOCI by component. The new authoritative guidance was effective for interim and annual periods beginning after December 15, 2012 and did not have a financial impact on the Corporation, but increased the level of disclosures related to AOCI (see "Note 13 – Accumulated Other Comprehensive Income (Loss)").

Trading_Securities

Trading Securities	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
TRADING SECURITIES	'
	Note 4 – Trading Securities
	Trading securities, at fair value, consist of the following investments at:
		September 30		December 31
		2013		2012
	States and political subdivisions	$	745	$	1,573
	Included in other noninterest income were net trading losses of $23 during the first nine months of 2013 were $4 of net unrealized trading losses on securities that were held in our trading portfolio as of September 30, 2013. Included in net trading losses of $41 during the first nine months of 2012 were $13 of net unrealized trading losses on securities that were held in our trading portfolio as of September 30, 2012.

AvailableforSale_Securities

Available-for-Sale Securities	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
AVAILABLE-FOR-SALE SECURITIES	'
	Note 5 – AFS Securities
	The amortized cost and fair value of AFS securities, with gross unrealized gains and losses, are as follows at:
		30-Sep-13
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	Government sponsored enterprises	$	24,985	$	7	$	837	$	24,155
	States and political subdivisions	189,998		6,233		2,445		193,786
	Auction rate money market preferred	3,200		—		561		2,639
	Preferred stocks	6,800		2		658		6,144
	Mortgage-backed securities	147,875		1,239		2,721		146,393
	Collateralized mortgage obligations	128,073		1,331		1,464		127,940
	Total	$	500,931	$	8,812	$	8,686	$	501,057
		31-Dec-12
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	Government sponsored enterprises	$	25,668	$	108	$	—	$	25,776
	States and political subdivisions	174,118		9,190		565		182,743
	Auction rate money market preferred	3,200		—		422		2,778
	Preferred stocks	6,800		—		437		6,363
	Mortgage-backed securities	152,256		3,199		110		155,345
	Collateralized mortgage obligations	128,378		2,627		—		131,005
	Total	$	490,420	$	15,124	$	1,534	$	504,010
	The amortized cost and fair value of AFS securities by contractual maturity at September 30, 2013 are as follows:
		Maturing								Securities with Variable Monthly Payments or Noncontractual Maturities
		Due in		After One		After Five		After				Total
		One Year		Year But		Years But		Ten Years
		or Less		Within		Within
				Five Years		Ten Years
	Government sponsored enterprises	$	—	$	72	$	24,913	$	—	$	—	$	24,985
	States and political subdivisions	5,068		35,993		93,353		55,584		—		189,998
	Auction rate money market preferred	—		—		—		—		3,200		3,200
	Preferred stocks	—		—		—		—		6,800		6,800
	Mortgage-backed securities	—		—		—		—		147,875		147,875
	Collateralized mortgage obligations	—		—		—		—		128,073		128,073
	Total amortized cost	$	5,068	$	36,065	$	118,266	$	55,584	$	285,948	$	500,931
	Fair value	$	5,237	$	37,363	$	120,324	$	55,017	$	283,116	$	501,057
	Expected maturities for government sponsored enterprises and states and political subdivisions may differ from contractual maturities because issuers may have the right to call or prepay obligations.
	As auction rate money market preferred and preferred stocks have continual call dates, they are not reported by a specific maturity group. Because of their variable monthly payments, mortgage-backed securities and collateralized mortgage obligations are not reported by a specific maturity group.
	A summary of the activity related to sales of AFS securities was as follows for the three and nine month periods ended:
		Three Months Ended				Nine Months Ended
		September 30				September 30
		2013		2012		2013		2012
	Proceeds from sales of AFS securities	$	6,372	$	16,436	$	16,229	$	40,677
	Gross realized gains (losses)	$	72	$	116	$	171	$	1,119
	Applicable income tax expense (benefit)	$	24	$	39	$	58	$	380
	The cost basis used to determine the realized gains or losses of AFS securities sold was the amortized cost of the individual investment security as of the trade date.
	Information pertaining to AFS securities with gross unrealized losses at September 30, 2013 and December 31, 2012 aggregated by investment category and length of time that individual securities have been in a continuous loss position, follows:
		30-Sep-13
		Less Than Twelve Months				Twelve Months or More
		Gross		Fair		Gross		Fair		Total
		Unrealized		Value		Unrealized		Value		Unrealized
		Losses				Losses				Losses
	Government sponsored enterprises	$	837	$	23,157	$	—	$	—	$	837
	States and political subdivisions	1,952		39,713		493		2,069		2,445
	Auction rate money market preferred	—		—		561		2,639		561
	Preferred stocks	—		—		658		3,141		658
	Mortgage-backed securities	2,721		77,269		—		—		2,721
	Collateralized mortgage obligations	1,464		56,189		—		—		1,464
	Total	$	6,974	$	196,328	$	1,712	$	7,849	$	8,686
	Number of securities in an unrealized loss position:			154				6		160
		31-Dec-12
	Less Than Twelve Months				Twelve Months or More
	Gross		Fair		Gross		Fair		Total
	Unrealized		Value		Unrealized		Value		Unrealized
	Losses				Losses				Losses
States and political subdivisions	$	80	$	5,019	$	485	$	2,352	$	565
Auction rate money market preferred	—		—		422		2,778		422
Preferred stocks	—		—		437		3,363		437
Mortgage-backed securities	110		25,499		—		—		110
Total	$	190	$	30,518	$	1,344	$	8,493	$	1,534
Number of securities in an unrealized loss position:			15				6		21
As of September 30, 2013 and December 31, 2012, we conducted an analysis to determine whether any securities currently in an unrealized loss position should be other-than-temporarily impaired. Such analyses considered, among other factors, the following criteria:
•	Has the value of the investment declined more than what is deemed to be reasonable based on a risk and maturity adjusted discount rate?
•	Is the investment credit rating below investment grade?
•	Is it probable the issuer will be unable to pay the amount when due?
•	Is it more likely than not that we will have to sell the security before recovery of its cost basis?
•	Has the duration of the investment been extended?
During the three month period ended March 31, 2012, we had one state issued student loan auction rate AFS investment security (which is included in states and political subdivisions) that was downgraded by Moody’s from A3 to Caa3. As a result of this downgrade, we engaged the services of an independent investment valuation firm to estimate the amount of credit losses (if any) related to this particular issue as of March 31, 2012. The evaluation calculated a range of estimated credit losses utilizing two different bifurcation methods:
1) Discounted Cash Flow Method.
2) Credit Yield Analysis Method.
The two methods were then weighted, with a higher weighting applied to the Discounted Cash Flow Method, to determine the estimated credit related impairment. As a result of this analysis we recognized an OTTI of $282 in earnings in the quarter ended March 31, 2012.
A summary of key valuation assumptions used in the aforementioned analysis as of March 31, 2012, follows:
	Discounted Cash Flow Method
Ratings
Fitch	Not Rated
Moody’s	Caa3
S&P	A
Seniority	Senior
Discount rate	LIBOR + 6.35%
	Credit Yield Analysis Method
Credit discount rate	LIBOR + 4.00%
Average observed discounts based on closed transactions	14.00%
To test for additional impairment of this security during the three and nine months ended September 30, 2013, we obtained another investment valuation (from the same firm engaged to perform the initial valuation as of March 31, 2012) as of September 30, 2013. Based on our analysis, no additional OTTI was indicated as of September 30, 2013.
The following table provides a roll-forward of credit related impairment recognized in earnings for the:
	Three Months Ended September 30				Nine Months Ended September 30
	2013		2012		2013		2012
Balance at beginning of period	$	282	$	282	$	282	$	—
Additions to credit losses for which no previous OTTI was recognized	—		—		—		282
Balance at end of period	$	282	$	282	$	282	$	282
Based on our analysis using the above criteria, the fact that we have asserted that we do not have the intent to sell AFS securities in an unrealized loss position, and considering it is unlikely that we will have to sell AFS securities in an unrealized loss position before recovery of their cost basis, we do not believe that the values of any other AFS securities are other-than-temporarily impaired as of September 30, 2013, or December 31, 2012.

Loans_and_Allowance_for_Loan_L

Loans and Allowance for Loan Losses	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]	'
LOANS AND ALLOWANCE FOR LOAN LOSSES	'
	Note 6 – Loans and ALLL
	We grant commercial, agricultural, residential real estate, and consumer loans to customers situated primarily in Clare, Gratiot, Isabella, Mecosta, Midland, Montcalm, and Saginaw counties in Michigan. The ability of the borrowers to honor their repayment obligations is often dependent upon the real estate, agricultural, light manufacturing, retail, gaming, tourism, higher education, and general economic conditions of this region. Substantially all of our consumer and residential real estate loans are secured by various items of property, while commercial loans are secured primarily by real estate, business assets, and personal guarantees; a portion of loans are unsecured.
	Loans that we have the intent and ability to hold in our portfolio are reported at their outstanding principal balance adjusted for any charge-offs, the ALLL, and any deferred fees or costs. Interest income on loans is accrued over the term of the loan based on the principal amount outstanding. Loan origination fees and certain direct loan origination costs are capitalized and recognized as a component of interest income over the term of the loan using the level yield method.
	The accrual of interest on commercial, agricultural, and residential real estate loans is typically discontinued at the time the loan is 90 days or more past due unless the credit is well-secured and in the process of collection. Consumer loans are typically charged-off no later than 180 days past due. Past due status is based on contractual terms of the loan. In all cases, loans are placed on nonaccrual or charged-off at an earlier date if collection of principal or interest is considered doubtful.
	For loans that are placed on nonaccrual status or charged-off, all interest accrued in the current calendar year, but not collected, is reversed against interest income while interest accrued in prior calendar years, but not collected, is charged against the ALLL. Loans are typically returned to accrual status after six months of continuous performance. For impaired loans not classified as nonaccrual, interest income continues to be accrued over the term of the loan based on the principal amount outstanding.
	Commercial and agricultural loans include loans for commercial real estate, commercial operating loans, farmland and agricultural production, and states and political subdivisions. Repayment of these loans is often dependent upon the successful operation and management of a business. We minimize our risk by limiting the amount of credit exposure to any one borrower to $12,500. Borrowers with credit needs of more than $12,500 are serviced through the use of loan participations with other commercial banks. Commercial and agricultural real estate loans generally require loan-to-value limits of less than 80%. Depending upon the type of loan, past credit history, and current operating results, we may require the borrower to pledge accounts receivable, inventory, and property and equipment. Personal guarantees are generally required from the owners of closely held corporations, partnerships, and sole proprietorships. In addition, we require annual financial statements, prepare cash flow analyses, and review credit reports as deemed necessary.
	We offer adjustable rate mortgages, fixed rate balloon mortgages, construction loans, and fixed rate mortgage loans which typically have amortization periods up to a maximum of 30 years. Fixed rate loans with an amortization of greater than 15 years are generally sold upon origination to Freddie Mac. Fixed rate residential real estate loans with an amortization of 15 years or less may be held in our portfolio, held for future sale, or sold upon origination. We consider the direction of interest rates, the sensitivity of our balance sheet to changes in interest rates, and overall loan demand to determine whether or not to sell these loans to Freddie Mac.
	Our lending policies generally limit the maximum loan-to-value ratio on residential real estate loans to 95% of the lower of the appraised value of the property or the purchase price, with the condition that private mortgage insurance is required on loans with loan-to-value ratios in excess of 80%. Substantially all loans upon origination have a loan to value ratio of less than 80%. Underwriting criteria for residential real estate loans include: evaluation of the borrower’s ability to make monthly payments, the value of the property securing the loan, ensuring the payment of principal, interest, taxes, and hazard insurance does not exceed 28% of a borrower’s gross income, all debt servicing does not exceed 36% of income, acceptable credit reports, verification of employment, income, and financial information. Appraisals are performed by independent appraisers and reviewed internally. All mortgage loan requests are reviewed by our mortgage loan committee or through a secondary market automated underwriting system; loans in excess of $400 require the approval of our Internal Loan Committee, the Board of Directors’ Loan Committee, or the Board of Directors.
	Consumer loans include automobile loans, secured and unsecured personal loans, and overdraft protection related loans. Loans are amortized generally for a period of up to 6 years. The underwriting emphasis is on a borrower’s perceived intent and ability to pay rather than collateral value. No consumer loans are sold to the secondary market.
	The ALLL is established as losses are estimated to have occurred through a provision for loan losses charged to earnings. Loan losses are charged against the ALLL when we believe the uncollectability of the loan balance is confirmed. Subsequent recoveries, if any, are credited to the ALLL.
	The ALLL is evaluated on a regular basis and is based upon a periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral, and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.
	The primary factors behind the determination of the level of the ALLL are specific allocations for impaired loans, historical loss percentages, as well as unallocated components. Specific allocations for impaired loans are primarily determined based on the difference between the net realizable value of the loan’s underlying collateral or the net present value of the projected payment stream and our recorded investment. Historical loss allocations were calculated at the loan class and segment levels based on a migration analysis of the loan portfolio over the preceding five years. An unallocated component is maintained to cover uncertainties that we believe affect our estimate of probable losses based on qualitative factors. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.
	A summary of changes in the ALLL and the recorded investment in loans by segments follows:
		Allowance for Loan Losses
		Three Months Ended September 30, 2013
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	July 1, 2013	$	6,472			$	335			$	3,676			$	647			$	570			$	11,700
	Loans charged-off	(394		)		(12		)		(94		)		(102		)		—				(602		)
	Recoveries	66				—				38				47				—				151
	Provision for loan losses	69				108				127				74				(27		)		351
	September 30, 2013	$	6,213			$	431			$	3,747			$	666			$	543			$	11,600
		Allowance for Loan Losses
		Nine Months Ended September 30, 2013
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	January 1, 2013	$	6,862			$	407			$	3,627			$	666			$	374			$	11,936
	Loans charged-off	(839		)		(12		)		(681		)		(311		)		—				(1,843		)
	Recoveries	289				—				152				200				—				641
	Provision for loan losses	(99		)		36				649				111				169				866
	September 30, 2013	$	6,213			$	431			$	3,747			$	666			$	543			$	11,600
		Allowance for Loan Losses and Recorded Investment in Loans
		30-Sep-13
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	ALLL
	Individually evaluated for impairment	$	2,080			$	31			$	1,890			$	—			$	—			$	4,001
	Collectively evaluated for impairment	4,133				400				1,857				666				543				7,599
	Total	$	6,213			$	431			$	3,747			$	666			$	543			$	11,600
	Loans
	Individually evaluated for impairment	$	12,155			$	787			$	11,514			$	65							$	24,521
	Collectively evaluated for impairment	376,818				92,140				280,311				34,059								783,328
	Total	$	388,973			$	92,927			$	291,825			$	34,124							$	807,849
		Allowance for Loan Losses
		Three Months Ended September 30, 2012
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	July 1, 2012	$	6,008			$	433			$	3,669			$	667			$	1,541			$	12,318
	Loans charged-off	(271		)		—				(213		)		(127		)		—				(611		)
	Recoveries	40				—				34				81				—				155
	Provision for loan losses	1,132				6				(356		)		91				(673		)		200
	September 30, 2012	$	6,909			$	439			$	3,134			$	712			$	868			$	12,062
		Allowance for Loan Losses
		Nine Months Ended September 30, 2012
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	January 1, 2012	$	6,284			$	1,003			$	2,980			$	633			$	1,475			$	12,375
	Loans charged-off	(957		)		—				(566		)		(364		)		—				(1,887		)
	Recoveries	168				—				95				211				—				474
	Provision for loan losses	1,414				(564		)		625				232				(607		)		1,100
	September 30, 2012	$	6,909			$	439			$	3,134			$	712			$	868			$	12,062
		Allowance for Loan Losses and Recorded Investment in Loans
		31-Dec-12
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	ALLL
	Individually evaluated for impairment	$	2,050			$	91			$	1,796			$	—			$	—			$	3,937
	Collectively evaluated for impairment	4,812				316				1,831				666				374				7,999
	Total	$	6,862			$	407			$	3,627			$	666			$	374			$	11,936
Loans
Individually evaluated for impairment	$	14,456			$	723			$	10,704			$	75							$	25,958
Collectively evaluated for impairment	357,049				82,883				273,444				33,419								746,795
Total	$	371,505			$	83,606			$	284,148			$	33,494							$	772,753
The following table displays the credit quality indicators for commercial and agricultural credit exposures based on internally assigned credit ratings as of:
	30-Sep-13
	Commercial												Agricultural
	Real Estate				Other				Total				Real Estate				Other				Total
Rating
2 - High quality	$	21,334			$	15,823			$	37,157			$	3,665			$	3,005			$	6,670
3 - High satisfactory	89,630				40,464				130,094				26,679				16,958				43,637
4 - Low satisfactory	141,646				45,022				186,668				25,564				11,672				37,236
5 - Special mention	13,246				1,256				14,502				1,917				1,027				2,944
6 - Substandard	17,532				1,497				19,029				805				1,387				2,192
7 - Vulnerable	1,085				186				1,271				—				248				248
8 - Doubtful	234				18				252				—				—				—
Total	$	284,707			$	104,266			$	388,973			$	58,630			$	34,297			$	92,927
	31-Dec-12
	Commercial												Agricultural
	Real Estate				Other				Total				Real Estate				Other				Total
Rating
2 - High quality	$	25,209			$	15,536			$	40,745			$	2,955			$	2,313			$	5,268
3 - High satisfactory	83,805				28,974				112,779				16,972				11,886				28,858
4 - Low satisfactory	127,423				45,143				172,566				27,291				15,437				42,728
5 - Special mention	16,046				1,692				17,738				1,008				3,191				4,199
6 - Substandard	20,029				2,224				22,253				1,167				1,217				2,384
7 - Vulnerable	1,512				2,294				3,806				—				—				—
8 - Doubtful	1,596				22				1,618				—				169				169
Total	$	275,620			$	95,885			$	371,505			$	49,393			$	34,213			$	83,606
Internally assigned risk ratings are reviewed, at a minimum, when loans are renewed or when management has knowledge of improvements or deterioration of the credit quality of individual credits. Descriptions of the internally assigned risk ratings for commercial and agricultural loans are as follows:
1. EXCELLENT – Substantially Risk Free
Credit has strong financial condition and solid earnings history, characterized by:
•	High liquidity, strong cash flow, low leverage.
•	Unquestioned ability to meet all obligations when due.
•	Experienced management, with management succession in place.
•	Secured by cash.
2. HIGH QUALITY – Limited Risk
Credit with sound financial condition and has a positive trend in earnings supplemented by:
•	Favorable liquidity and leverage ratios.
•	Ability to meet all obligations when due.
•	Management with successful track record.
•	Steady and satisfactory earnings history.
•	If loan is secured, collateral is of high quality and readily marketable.
•	Access to alternative financing.
•	Well defined primary and secondary source of repayment.
•	If supported by guaranty, the financial strength and liquidity of the guarantor(s) are clearly evident.
3. HIGH SATISFACTORY – Reasonable Risk
Credit with satisfactory financial condition and further characterized by:
•	Working capital adequate to support operations.
•	Cash flow sufficient to pay debts as scheduled.
•	Management experience and depth appear favorable.
•	Loan performing according to terms.
•	If loan is secured, collateral is acceptable and loan is fully protected.
4. LOW SATISFACTORY – Acceptable Risk
Credit with bankable risks, although some signs of weaknesses are shown:
•	Would include most start-up businesses.
•	Occasional instances of trade slowness or repayment delinquency – may have been 10-30 days slow within the past year.
•	Management’s abilities are apparent, yet unproven.
•	Weakness in primary source of repayment with adequate secondary source of repayment.
•	Loan structure generally in accordance with policy.
•	If secured, loan collateral coverage is marginal.
•	Adequate cash flow to service debt, but coverage is low.
To be classified as less than satisfactory, only one of the following criteria must be met.
5. SPECIAL MENTION – Criticized
Credit constitutes an undue and unwarranted credit risk but not to the point of justifying a classification of substandard. The credit risk may be relatively minor yet constitute an unwarranted risk in light of the circumstances surrounding a specific loan:
•	Downward trend in sales, profit levels, and margins.
•	Impaired working capital position.
•	Cash flow is strained in order to meet debt repayment.
•	Loan delinquency (30-60 days) and overdrafts may occur.
•	Shrinking equity cushion.
•	Diminishing primary source of repayment and questionable secondary source.
•	Management abilities are questionable.
•	Weak industry conditions.
•	Litigation pending against the borrower.
•	Collateral or guaranty offers limited protection.
•	Negative debt service coverage, however the credit is well collateralized and payments are current.
6. SUBSTANDARD – Classified
Credit where the borrower’s current net worth, paying capacity, and value of the collateral pledged is inadequate. There is a distinct possibility that we will implement collection procedures if the loan deficiencies are not corrected. In addition, the following characteristics may apply:
•	Sustained losses have severely eroded the equity and cash flow.
•	Deteriorating liquidity.
•	Serious management problems or internal fraud.
•	Original repayment terms liberalized.
•	Likelihood of bankruptcy.
•	Inability to access other funding sources.
•	Reliance on secondary source of repayment.
•	Litigation filed against borrower.
•	Collateral provides little or no value.
•	Requires excessive attention of the loan officer.
•	Borrower is uncooperative with loan officer.
7. VULNERABLE – Classified
Credit is considered “Substandard” and warrants placing on nonaccrual. Risk of loss is being evaluated and exit strategy options are under review. Other characteristics that may apply:
•	Insufficient cash flow to service debt.
•	Minimal or no payments being received.
•	Limited options available to avoid the collection process.
•	Transition status, expect action will take place to collect loan without immediate progress being made.
8. DOUBTFUL – Workout
Credit has all the weaknesses inherent in a “Substandard” loan with the added characteristic that collection and/or liquidation is pending. The possibility of a loss is extremely high, but its classification as a loss is deferred until liquidation procedures are completed, or reasonably estimable. Other characteristics that may apply:
•	Normal operations are severely diminished or have ceased.
•	Seriously impaired cash flow.
•	Original repayment terms materially altered.
•	Secondary source of repayment is inadequate.
•	Survivability as a “going concern” is impossible.
•	Collection process has begun.
•	Bankruptcy petition has been filed.
•	Judgments have been filed.
•	Portion of the loan balance has been charged-off.
Our primary credit quality indicator for residential real estate and consumer loans is the individual loan’s past due aging. The following tables summarize the past due and current loans as of:
	30-Sep-13
	Accruing Interest																Total Past Due and Nonaccrual
	and Past Due:
	30-59				60-89				90 Days				Nonaccrual								Current				Total
	Days				Days				or More
Commercial
Commercial real estate	$	343			$	889			$	167			$	1,266			$	2,665			$	282,042			$	284,707
Commercial other	867				32				—				239				1,138				103,128				104,266
Total commercial	1,210				921				167				1,505				3,803				385,170				388,973
Agricultural
Agricultural real estate	642				—				—				—				642				57,988				58,630
Agricultural other	214				450				—				262				926				33,371				34,297
Total agricultural	856				450				—				262				1,568				91,359				92,927
Residential real estate
Senior liens	2,549				898				290				1,957				5,694				232,710				238,404
Junior liens	166				—				—				68				234				13,649				13,883
Home equity lines of credit	347				64				—				—				411				39,127				39,538
Total residential real estate	3,062				962				290				2,025				6,339				285,486				291,825
Consumer
Secured	115				1				—				—				116				29,190				29,306
Unsecured	6				10				—				20				36				4,782				4,818
Total consumer	121				11				—				20				152				33,972				34,124
Total	$	5,249			$	2,344			$	457			$	3,812			$	11,862			$	795,987			$	807,849
	31-Dec-12
	Accruing Interest																Total Past Due and Nonaccrual
	and Past Due:
	30-59				60-89				90 Days				Nonaccrual								Current				Total
	Days				Days				or More
Commercial
Commercial real estate	$	1,304			$	161			$	63			$	2,544			$	4,072			$	271,548			$	275,620
Commercial other	606				—				40				2,294				2,940				92,945				95,885
Total commercial	1,910				161				103				4,838				7,012				364,493				371,505
Agricultural
Agricultural real estate	—				—				—				—				—				49,393				49,393
Agricultural other	90				—				—				169				259				33,954				34,213
Total agricultural	90				—				—				169				259				83,347				83,606
Residential real estate
Senior liens	2,000				346				320				2,064				4,730				223,532				228,262
Junior liens	232				—				—				50				282				16,207				16,489
Home equity lines of credit	237				—				—				182				419				38,978				39,397
Total residential real estate	2,469				346				320				2,296				5,431				278,717				284,148
Consumer
Secured	127				33				4				—				164				28,118				28,282
Unsecured	31				3				1				—				35				5,177				5,212
Total consumer	158				36				5				—				199				33,295				33,494
Total	$	4,627			$	543			$	428			$	7,303			$	12,901			$	759,852			$	772,753
Impaired Loans
Loans may be classified as impaired if they meet one or more of the following criteria:
1	There has been a charge-off of its principal balance (in whole or in part),
2	The loan has been classified as a TDR, or
3	The loan is in nonaccrual status.
Impairment is measured on a loan-by-loan basis for commercial and agricultural loans by comparing the loan’s outstanding balance to the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price, or the fair value of the collateral, less cost to sell, if the loan is collateral dependent. Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Impairment is measured on a loan-by-loan basis for residential real estate and consumer loans by comparing the loan’s outstanding balance to the present value of expected future cash flows discounted at the loan’s effective interest rate.
We do not recognize interest income on impaired loans in nonaccrual status. For impaired loans not in nonaccrual status, interest income is recognized daily, as earned, according to the terms of the loan agreement. The following is a summary of information pertaining to impaired loans as of, and for the periods ended:
	30-Sep-13												31-Dec-12
	Outstanding Balance				Unpaid Principal Balance				Valuation Allowance				Outstanding Balance				Unpaid Principal Balance				Valuation Allowance
Impaired loans with a valuation allowance
Commercial real estate	$	6,023			$	6,161			$	1,818			$	7,295			$	7,536			$	1,653
Commercial other	658				658				262				2,140				2,140				397
Agricultural real estate	90				90				31				91				91				32
Agricultural other	—				—				—				420				420				59
Residential real estate senior liens	11,254				12,525				1,873				10,450				11,672				1,783
Residential real estate junior liens	88				135				17				72				118				13
Total impaired loans with a valuation allowance	$	18,113			$	19,569			$	4,001			$	20,468			$	21,977			$	3,937
Impaired loans without a valuation allowance
Commercial real estate	$	4,656			$	5,494							$	3,749			$	4,408
Commercial other	818				928								1,272				1,433
Agricultural real estate	329				329								—				—
Agricultural other	368				488								212				332
Home equity lines of credit	172				472								182				482
Consumer secured	65				72								75				84
Total impaired loans without a valuation allowance	$	6,408			$	7,783							$	5,490			$	6,739
Impaired loans
Commercial	$	12,155			$	13,241			$	2,080			$	14,456			$	15,517			$	2,050
Agricultural	787				907				31				723				843				91
Residential real estate	11,514				13,132				1,890				10,704				12,272				1,796
Consumer	65				72				—				75				84				—
Total impaired loans	$	24,521			$	27,352			$	4,001			$	25,958			$	28,716			$	3,937
	Three Months Ended								Nine Months Ended
	September 30, 2013								September 30, 2013
	Average Outstanding Balance				Interest Income Recognized				Average Outstanding Balance				Interest Income Recognized
Impaired loans with a valuation allowance
Commercial real estate	$	6,471			$	157			$	7,546			$	378
Commercial other	1,063				29				976				67
Agricultural real estate	91				2				91				4
Agricultural other	—				—				70				—
Residential real estate senior liens	10,865				230				10,595				439
Residential real estate junior liens	80				4				84				5
Total impaired loans with a valuation allowance	$	18,570			$	422			$	19,362			$	893
Impaired loans without a valuation allowance
Commercial real estate	$	4,531			$	169			$	4,037			$	327
Commercial other	833				29				1,029				88
Agricultural real estate	231				15				144				19
Agricultural other	361				2				402				(2		)
Home equity lines of credit	173				8				178				17
Consumer secured	60				1				66				3
Total impaired loans without a valuation allowance	$	6,189			$	224			$	5,856			$	452
Impaired loans
Commercial	$	12,898			$	384			$	13,588			$	860
Agricultural	683				19				707				21
Residential real estate	11,118				242				10,857				461
Consumer	60				1				66				3
Total impaired loans	$	24,759			$	646			$	25,218			$	1,345
	Three Months Ended								Nine Months Ended
	September 30, 2012								September 30, 2012
	Average Outstanding Balance				Interest Income Recognized				Average Outstanding Balance				Interest Income Recognized
Impaired loans with a valuation allowance
Commercial real estate	$	6,260			$	106			$	6,197			$	287
Commercial other	1,996				67				1,183				95
Agricultural real estate	—				—				—				—
Agricultural other	1,023				—				1,878				73
Residential real estate senior liens	7,994				88				7,803				263
Residential real estate junior liens	158				3				174				7
Total impaired loans with a valuation allowance	$	17,431			$	264			$	17,235			$	725
Impaired loans without a valuation allowance
Commercial real estate	$	5,651			$	72			$	6,749			$	251
Commercial other	2,026				15				1,860				80
Agricultural real estate	179				—				214				—
Agricultural other	1,417				34				869				41
Home equity lines of credit	188				6				194				14
Consumer secured	81				2				90				5
Total impaired loans without a valuation allowance	$	9,542			$	129			$	9,976			$	391
Impaired loans
Commercial	$	15,933			$	260			$	15,989			$	713
Agricultural	2,619				34				2,961				114
Residential real estate	8,340				97				8,171				284
Consumer	81				2				90				5
Total impaired loans	$	26,973			$	393			$	27,211			$	1,116
As of September 30, 2013 and December 31, 2012, we had committed to advance $88 and $9, respectively, in connection with impaired loans, which include TDRs.
Troubled Debt Restructurings
Loan modifications are considered to be TDRs when the modification includes terms outside of normal lending practices to a borrower who is experiencing financial difficulties.
Typical concessions granted include, but are not limited to:
1	Agreeing to interest rates below prevailing market rates for debt with similar risk characteristics.
2	Extending the amortization period beyond typical lending guidelines for debt with similar risk characteristics.
3	Forbearance of principal.
4	Forbearance of accrued interest.
To determine if a borrower is experiencing financial difficulties, we consider if:
1	The borrower is currently in default on any of their debt.
2	The borrower would likely default on any of their debt if the concession was not granted.
3	The borrower’s cash flow was insufficient to service all of their debt if the concession was not granted.
4	The borrower has declared, or is in the process of declaring, bankruptcy.
5	The borrower is unlikely to continue as a going concern (if the entity is a business).
The following is a summary of information pertaining to TDRs granted in the periods ended:
	Three Months Ended September 30, 2013											Nine Months Ended September 30, 2013
	Number of Loans			Pre-Modification Recorded Investment				Post-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Post-Modification Recorded Investment
Commercial other	3			$	159			$	159			10			$	3,313			$	3,116
Agricultural other	1			198				198				2			332				332
Residential real estate senior liens	15			1,176				1,176				30			2,611				2,595
Residential real estate junior liens	1			20				20				1			20				20
Consumer unsecured	2			34				34				2			34				34
Total	22			$	1,587			$	1,587			45			$	6,310			$	6,097
	Three Months Ended September 30, 2012											Nine Months Ended September 30, 2012
	Number of Loans			Pre-Modification Recorded Investment				Post-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Post-Modification Recorded Investment
Commercial other	1			$	178			$	178			27			$	5,069			$	5,069
Agricultural other	—			—				—				6			561				561
Residential real estate senior liens	—			—				—				12			1,405				1,405
Residential real estate junior liens	1			22				22				1			22				22
Total	2			$	200			$	200			46			$	7,057			$	7,057
	Three Months Ended September 30, 2013														Nine Months Ended September 30, 2013
	Below Market Interest Rate							Below Market Interest Rate and Extension of Amortization Period							Below Market Interest Rate							Below Market Interest Rate and Extension of Amortization Period
	Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment
Commercial other	3			$	159			—			$	—			6			$	1,517			4			$	1,796
Agricultural other	1			198				—			—				2			332				—			—
Residential real estate senior liens	10			924				5			252				17			1,548				13			1,063
Residential real estate junior liens	—			—				1			20				—			—				1			20
Consumer unsecured	1			16				1			18				1			16				1			18
Total	15			$	1,297			7			$	290			26			$	3,413			19			$	2,897
	Three Months Ended September 30, 2012														Nine Months Ended September 30, 2012
	Below Market Interest Rate							Below Market Interest Rate and Extension of Amortization Period							Below Market Interest Rate							Below Market Interest Rate and Extension of Amortization Period
	Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment
Commercial other	1			$	178			—			$	—			25			$	4,924			2			$	145
Agricultural other	—			—				—			—				6			561				—			—
Residential real estate senior liens	—			—				—			—				4			324				8			1,081
Residential real estate junior liens	—			—				1			22				—			—				1			22
Total	1			$	178			1			$	22			35			$	5,809			11			$	1,248
We did not restructure any loans through the forbearance of principal or accrued interest in the three and nine month periods ended September 30, 2013 or 2012.
Based on our historical loss experience, losses associated with TDRs are not significantly different than other impaired loans within the same loan segment. As such, TDRs, including TDRs that have been modified in the past 12 months that subsequently defaulted, are analyzed in the same manner as other impaired loans within their respective loan segment.
We had no loans that defaulted in the three and nine month periods ended September 30, 2013, which were modified within 12 months prior to the default date.
Following is a summary of loans that defaulted in the three and nine month periods ended September 30, 2012, which were modified within 12 months prior to the default date:
	Three Months Ended September 30, 2012															Nine Months Ended September 30, 2012
	Number of Loans			Pre-				Charge-Off				Post-				Number of Loans			Pre-				Charge-Off				Post-
				Default				Recorded				Default							Default				Recorded				Default
				Recorded				Upon				Recorded							Recorded				Upon				Recorded
				Investment				Default				Investment							Investment				Default				Investment
Commercial other	2			$	50			$	25			$	25			3			$	132			$	66			$	66
Residential real estate senior liens	—			—				—				—				1			47				43				4
Consumer secured	1			8				8				—				1			8				8				—
Total	3			$	58			$	33			$	25			5			$	187			$	117			$	70
The following is a summary of TDR loan balances as of:
	September 30				December 31
	2013				2012
TDRs	$	20,337			$	19,355

Equity_Securities_Without_Read

Equity Securities Without Readily Determinable Fair Values	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
EQUITY SECURITIES WITHOUT READILY DETERMINABLE FAIR VALUES	'
	Note 7 – Equity Securities Without Readily Determinable Fair Values
	Included in equity securities without readily determinable fair values are restricted securities, which are carried at cost, and investments in unconsolidated entities accounted for under the equity method of accounting.
	Equity securities without readily determinable fair values consist of the following as of:
		September 30		December 31
		2013		2012
	FHLB Stock	$	8,100	$	7,850
	Corporate Settlement Solutions, LLC	7,030		7,040
	FRB Stock	1,879		1,879
	Valley Financial Corporation	1,000		1,000
	Other	344		349
	Total	$	18,353	$	18,118

Borrowed_Funds

Borrowed Funds	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
BORROWED FUNDS	'
	Note 8 – Borrowed Funds
	Borrowed funds consist of the following obligations as of:
		September 30				December 31
		2013				2012
		Amount		Rate		Amount			Rate
	FHLB advances	$	162,000	2.02	%	$	152,000		2.05	%
	Securities sold under agreements to repurchase without stated maturity dates	81,405		0.15	%	66,147			0.15	%
	Securities sold under agreements to repurchase with stated maturity dates	16,296		3.57	%	16,284			3.57	%
	Federal funds purchased	6,300		0.5	%	6,570			0.5	%
	Total	$	266,001	1.51	%	$	241,001		1.59	%
	The FHLB advances are collateralized by a blanket lien on all qualified 1-4 family residential real estate loans and certain mortgage-backed securities and collateralized mortgage obligations. Advances are also secured by our holdings of FHLB stock. As of September 30, 2013, we had the ability to borrow up to an additional $84,966, based on assets pledged as collateral. During the first quarter of 2013 and 2012, we reduced funding costs by modifying the term of $30,000 and $60,000, respectively, of FHLB advances.
	The following table lists the maturity and weighted average interest rates of FHLB advances as of:
		30-Sep-13				31-Dec-12
		Amount		Rate		Amount			Rate
	Fixed rate advances due 2014	$	10,000	0.48	%	$	10,000		0.48	%
	Fixed rate advances due 2015	32,000		0.84	%	42,000			1.12	%
	Fixed rate advances due 2016	10,000		2.15	%	10,000			2.15	%
	Fixed rate advances due 2017	30,000		1.95	%	40,000			2.15	%
	Fixed rate advances due 2018	40,000		2.35	%	20,000			2.86	%
	Fixed rate advances due 2019	20,000		3.11	%	20,000			3.73	%
	Fixed rate advances due 2020	10,000		1.98	%	10,000			1.98	%
	Fixed rate advances due 2023	10,000		3.9	%	—			—	%
	Total	$	162,000	2.02	%	$	152,000		2.05	%
	Securities sold under agreements to repurchase are classified as secured borrowings. Securities sold under agreements to repurchase without stated maturity dates generally mature within one to four days from the transaction date. Securities sold under agreements to repurchase are reflected at the amount of cash received in connection with the transaction. The securities underlying the agreements have a carrying value and a fair value of $139,082 and $143,322 at September 30, 2013 and December 31, 2012, respectively. Such securities remain under our control. We may be required to provide additional collateral based on the fair value of underlying securities.
	The following table provides a summary of short-term borrowings for the three and nine month periods ended:
		Three Months Ended September 30, 2013							Three Months Ended September 30, 2012
		Maximum Month End Balance		Average Balance			Weighted Average Interest Rate During the Period		Maximum Month End Balance		Average Balance		Weighted Average Interest Rate During the Period
	Securities sold under agreements to repurchase without stated maturity dates	$	81,405	$	78,148		0.15	%	$	58,471	$	57,983	0.2	%
	Federal funds purchased	6,300		5,052			0.62	%	15,000		5,848		0.46	%
		Nine Months Ended September 30, 2013							Nine Months Ended September 30, 2012
		Maximum Month End Balance		Average Balance			Weighted Average Interest Rate During the Period		Maximum Month End Balance		Average Balance		Weighted Average Interest Rate During the Period
	Securities sold under agreements to repurchase without stated maturity dates	$	81,405	$	69,224		0.15	%	$	58,584	$	55,721	0.2	%
	Federal funds purchased	13,700		4,133			0.57	%	17,900		4,327		0.41	%
	We had pledged certificates of deposit held in other financial institutions, trading securities, AFS securities, and 1-4 family residential real estate loans in the following amounts at:
		September 30		December 31
		2013		2012
	Pledged to secure borrowed funds	$	304,224	$	308,628
	Pledged to secure repurchase agreements	139,082		143,322
	Pledged for public deposits and for other purposes necessary or required by law	21,595		22,955
	Total	$	464,901	$	474,905
	We had no investment securities that are restricted to be pledged for specific purposes.

Other_Noninterest_Expenses

Other Noninterest Expenses	9 Months Ended
	Sep. 30, 2013
Other Income and Expenses [Abstract]	'
OTHER NONINTEREST EXPENSES	'
	Note 9 – Other Noninterest Expenses
	A summary of expenses included in other noninterest expenses are as follows for the:
		Three Months Ended				Nine Months Ended
		September 30				September 30
		2013		2012		2013		2012
	Marketing and community relations	$	271	$	610	$	945	$	1,639
	FDIC insurance premiums	267		218		812		646
	Directors fees	203		235		607		654
	Audit and related fees	189		179		490		509
	Education and travel	110		112		348		378
	Loan underwriting fees	97		89		336		272
	Postage and freight	103		105		296		300
	Printing and supplies	106		91		291		310
	Legal fees	87		50		267		193
	Consulting fees	68		92		223		350
	Other	500		455		1,533		1,431
	Total other	$	2,001	$	2,236	$	6,148	$	6,682

Federal_Income_Taxes

Federal Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
FEDERAL INCOME TAXES	'
	Note 10 – Federal Income Taxes
	The reconciliation of the provision for federal income taxes and the amount computed at the federal statutory tax rate of 34% of income before federal income tax expense is as follows for the:
		Three Months Ended						Nine Months Ended
		September 30						September 30
		2013			2012			2013			2012
	Income taxes at 34% statutory rate	$	1,347		$	1,481		$	3,903		$	4,093
	Effect of nontaxable income
	Interest income on tax exempt municipal securities	(411		)	(391		)	(1,212		)	(1,170		)
	Earnings on corporate owned life insurance policies	(63		)	(58		)	(185		)	(176		)
	Other	(217		)	(147		)	(667		)	(439		)
	Total effect of nontaxable income	(691		)	(596		)	(2,064		)	(1,785		)
	Effect of nondeductible expenses	18			14			54			36
	Federal income tax expense	$	674		$	899		$	1,893		$	2,344
	A summary of OCI follows for the:
		Three Months Ended September 30
		2013									2012
		Auction Rate Money Market Preferred and Preferred Stocks			All Other AFS Securities			Total			Auction Rate Money Market Preferred and Preferred Stocks			All Other AFS Securities			Total
	Unrealized gains (losses) arising during the period	$	(653	)	$	1,318		$	665		$	630		$	2,360		$	2,990
	Reclassification adjustment for net realized (gains) losses included in net income	—			(72		)	(72		)	—			(116		)	(116		)
	Reclassification adjustment for impairment loss included in net income	—			—			—			—			—			—
	Net unrealized gains (losses)	(653		)	1,246			593			630			2,244			2,874
	Tax effect	—			(447		)	(447		)	—			(763		)	(763		)
	Unrealized gains (losses), net of tax	$	(653	)	$	799		$	146		$	630		$	1,481		$	2,111
		Nine Months Ended September 30
		2013									2012
		Auction Rate Money Market Preferred and Preferred Stocks			All Other AFS Securities			Total			Auction Rate Money Market Preferred and Preferred Stocks			All Other AFS Securities			Total
	Unrealized gains (losses) arising during the period	$	(358	)	$	(12,935	)	$	(13,293	)	$	2,049		$	3,160		$	5,209
	Reclassification adjustment for net realized (gains) losses included in net income	—			(171		)	(171		)	—			(1,119		)	(1,119		)
	Reclassification adjustment for impairment loss included in net income	—			—			—			—			282			282
	Net unrealized gains (losses)	(358		)	(13,106		)	(13,464		)	2,049			2,323			4,372
	Tax effect	—			4,455			4,455			—			(790		)	(790		)
	Unrealized gains (losses), net of tax	$	(358	)	$	(8,651	)	$	(9,009	)	$	2,049		$	1,533		$	3,582

Defined_Benefit_Pension_Plan

Defined Benefit Pension Plan	9 Months Ended
	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]	'
DEFINED BENEFIT PENSION PLAN	'
	Note 11 – Defined Benefit Pension Plan
	We maintain a noncontributory defined benefit pension plan, which was curtailed effective March 1, 2007. As a result of the curtailment, future salary increases are no longer considered and plan benefits are based on years of service and the individual employee’s five highest consecutive years of compensation out of the last ten years of service through March 1, 2007. We contributed $215 and $709 to the plan during the nine month periods ended September 30, 2013 and 2012, respectively. We do not anticipate any further contributions to the plan in 2013.
	Following are the components of net periodic benefit cost for the three and nine month periods ended:
		Three Months Ended						Nine Months Ended
		September 30						September 30
		2013			2012			2013			2012
	Interest cost on PBO	$	113		$	118		$	338		$	353
	Expected return on plan assets	(143		)	(127		)	(430		)	(381		)
	Amortization of unrecognized actuarial net loss	83			73			248			219
	Net periodic benefit cost	$	53		$	64		$	156		$	191

Fair_Value

Fair Value	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
FAIR VALUE	'
	Note 12 – Fair Value
	Following is a description of the valuation methodologies, key inputs, and an indication of the level of the fair value hierarchy in which the assets or liabilities are classified.
	Cash and cash equivalents: The carrying amounts of cash and short term investments, including Federal funds sold, approximate fair values. As such, we classify cash and demand deposits due from banks as Level 1.
	Certificates of deposit held in other financial institutions: Interest bearing balances held in unaffiliated financial institutions include certificates of deposit and other short term interest bearing balances that mature within 3 years. Fair value is determined using prices for similar assets with similar characteristics. As such, we classify certificates of deposits held in other financial institutions as Level 2.
	AFS and trading securities: AFS and trading securities are recorded at fair value on a recurring basis. Level 1 fair value measurement is based upon quoted prices for identical instruments. Level 2 fair value measurement is based upon quoted prices for similar instruments. If quoted prices are not available, fair values are measured using independent pricing models or other model based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss and liquidity assumptions. The values for Level 1 and Level 2 investment securities are generally obtained from an independent third party. On a quarterly basis, we compare the values provided to alternative pricing sources.
	Mortgage loans AFS: Mortgage loans AFS are carried at the lower of cost or fair value. The fair value of Mortgage loans AFS are based on what price secondary markets are currently offering for portfolios with similar characteristics. As such, we classify Mortgage loans AFS subject to nonrecurring fair value adjustments as Level 2.
	Loans: For variable rate loans with no significant change in credit risk, fair values are based on carrying values. Fair values for fixed rate loans are estimated using discounted cash flow analyses, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. The resulting amounts are adjusted to estimate the effect of changes in the credit quality of borrowers since the loans were originated. As such, we classify loans as Level 3 assets.
	We do not record loans at fair value on a recurring basis. However, from time-to-time, loans are classified as impaired and a specific allowance for loan losses may be established. Loans for which it is probable that payment of interest and principal will be significantly different than the contractual terms of the original loan agreement are considered impaired. Once a loan is identified as impaired, we measure the estimated impairment. The fair value of impaired loans is estimated using one of several methods, including collateral value, market value of similar debt, enterprise value, liquidation value, or discounted cash flows. Those impaired loans not requiring an allowance represent loans for which the fair value of the expected repayments or collateral exceed the recorded investments in such loans.
	We review the net realizable values of the underlying collateral for collateral dependent impaired loans on at least a quarterly basis for all loan types. To determine the collateral value, we utilize independent appraisals, broker price opinions, or internal evaluations. We review these valuations to determine whether an additional discount should be applied given the age of market information that may have been considered as well as other factors such as costs to carry and sell an asset if it is determined that the collateral will be liquidated in connection with the ultimate settlement of the loan. We use these valuations to determine if any charge-offs or specific reserves are necessary. We may obtain new valuations in certain circumstances, including when there has been significant deterioration in the condition of the collateral, if the foreclosure process has begun, or if the existing valuation is deemed to be outdated. Due to the inherent level of estimation in the valuation process, we record impaired loans as nonrecurring Level 3.
	The table below lists the quantitative information about impaired loans measured utilizing Level 3 fair value measurements as of:
		September 30, 2013
	Valuation Techniques	Fair Value		Unobservable Input	Range
	Discounted cash flow	$9,452		Duration of cash flows:	5-120 Months
				Reduction in interest rate from original loan terms:	5.00% - 6.38%
				Discount applied to collateral appraisal:
				Real Estate	20% - 30%
				Equipment	50%
	Discounted appraisal value	$11,068		Livestock	50%
				Cash crop inventory	50%
				Other inventory	75%
				Accounts receivable	75%
		December 31, 2012
	Valuation Techniques	Fair Value		Unobservable Input	Range
	Discounted cash flow	$8,726		Duration of cash flows:	14-120 Months
				Reduction in interest rate from original loan terms:	5.00% - 6.25%
				Discount applied to collateral appraisal:
				Real Estate	20% - 30%
				Equipment	50%
	Discounted appraisal value	$13,295		Livestock	50%
				Cash crop inventory	50%
				Other inventory	75%
				Accounts receivable	75%
	Accrued interest receivable: The carrying amounts of accrued interest receivable approximate fair value. As such, we classify accrued interest receivable as Level 1.
	Equity securities without readily determinable fair values: Included in equity securities without readily determinable fair values are FHLB stock and FRB stock as well as our ownership interests in Corporate Settlement Solutions, LLC and Valley Financial Corporation. The investment in Corporate Settlement Solutions, LLC, a title insurance company, was made in the first quarter 2007. We are not the managing entity of Corporate Settlement Solutions, LLC, and therefore, we account for our investment under the equity method of accounting. Valley Financial Corporation is the parent company of 1st State Bank in Saginaw, Michigan, which is a de novo bank that opened in 2005. We made investments in Valley Financial Corporation in 2004 and in 2007.
	The lack of an active market, or other independent sources to validate fair value estimates coupled with the impact of future capital calls and transfer restrictions, is an inherent limitation in the valuation process. As the fair values of these investments are not readily determinable, they are not disclosed under a specific fair value hierarchy; however, they are reviewed quarterly for impairment. If we were to record an impairment adjustment related to these securities, it would be classified as a nonrecurring Level 3 fair value adjustment. During 2013 and 2012, there were no impairments recorded on equity securities without readily determinable fair values.
	Foreclosed assets: Upon transfer from the loan portfolio, foreclosed assets (which are included in other assets) are adjusted to and subsequently carried at the lower of carrying value or fair value less costs to sell. Net realizable value is based upon independent market prices, appraised values of the collateral, or management’s estimation of the value of the collateral. Due to the inherent level of estimation in the valuation process, we record foreclosed assets as nonrecurring Level 3.
	The table below lists the quantitative information related to foreclosed assets measured utilizing Level 3 fair value measurements as of:
		September 30, 2013
	Valuation Techniques	Fair Value			Unobservable Input		Range
					Discount applied to collateral appraisal:
	Discounted appraisal value	$	1,186		Real Estate		20% - 30%
		31-Dec-12
	Valuation Techniques	Fair Value			Unobservable Input		Range
					Discount applied to collateral appraisal:
	Discounted appraisal value	$	2,018		Real Estate		20% - 30%
	Goodwill and other intangible assets: Acquisition intangibles and goodwill are evaluated for potential impairment on at least an annual basis. Acquisition intangibles and goodwill are typically qualitatively evaluated to determine if it is more likely than not that the carrying balance is impaired. If it is determined that the carrying balance of acquisition intangibles or goodwill is more likely than not to be impaired, we perform a cash flow valuation to determine the extent of the potential impairment. If the testing resulted in impairment, we would classify goodwill and other acquisition intangibles subjected to nonrecurring fair value adjustments as Level 3. During 2013 and 2012, there were no impairments recorded on goodwill and other acquisition intangibles.
	OMSRs: OMSRs (which are included in other assets) are subject to impairment testing. To test for impairment, we utilize a discounted cash flow analysis using interest rates and prepayment speed assumptions currently quoted for comparable instruments and discount rates. If the valuation model reflects a value less than the carrying value, OMSRs are adjusted to fair value through a valuation allowance as determined by the model. As such, we classify OMSRs subject to nonrecurring fair value adjustments as Level 2.
	Deposits: The fair value of demand, savings, and money market deposits are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts), and are classified as Level 1. Fair values for variable rate certificates of deposit approximate their recorded carrying value. Fair values for fixed rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits. As such, fixed rate certificates of deposit are classified as Level 2.
	Borrowed funds: The carrying amounts of federal funds purchased, borrowings under overnight repurchase agreements, and other short-term borrowings maturing within ninety days approximate their fair values. The fair values of other borrowed funds are estimated using discounted cash flow analyses based on current incremental borrowing arrangements. As such, borrowed funds are classified as Level 2.
	Accrued interest payable: The carrying amounts of accrued interest payable approximate fair value. As such, we classify accrued interest payable as Level 1.
	Commitments to extend credit, standby letters of credit, and undisbursed loans: Our commitments to extend credit, standby letters of credit, and undisbursed funds have no carrying amount and are estimated to have no realizable fair value. Historically, a majority of the unused commitments to extend credit have not been drawn upon and, generally, we do not receive fees in connection with these commitments other than standby letter of credit fees, which are not significant.
	The preceding methods described may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Although we believe our valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement.
	Estimated Fair Values of Financial Instruments Not Recorded at Fair Value in their Entirety on a Recurring Basis
	Disclosure of the estimated fair values of financial instruments, which differ from carrying values, often requires the use of estimates. In cases where quoted market values in an active market are not available, we use present value techniques and other valuation methods to estimate the fair values of our financial instruments. These valuation methods require considerable judgment and the resulting estimates of fair value can be significantly affected by the assumptions made and methods used.
	The carrying amount and estimated fair value of financial instruments not recorded at fair value in their entirety on a recurring basis on our consolidated balance sheets are as follows as of:
		September 30, 2013
		Carrying			Estimated			(Level 1)			(Level 2)			(Level 3)
		Value			Fair Value
	ASSETS
	Cash and cash equivalents	$	21,604		$	21,604		$	21,604		$	—		$	—
	Certificates of deposit held in other financial institutions	2,045			2,048			—			2,048			—
	Mortgage loans AFS	712			722			—			722			—
	Total loans	807,849			808,884			—			—			808,884
Less allowance for loan and lease losses	(11,600		)	(11,600		)	—			—			(11,600		)
Net loans	796,249			797,284			—			—			797,284
Accrued interest receivable	6,584			6,584			6,584			—			—
Equity securities without readily determinable fair values (1)	18,353			18,353			—			—			—
OMSRs	2,659			2,732			—			2,732			—
LIABILITIES
Deposits without stated maturities	574,860			574,860			574,860			—			—
Deposits with stated maturities	449,071			451,336			—			451,336			—
Borrowed funds	266,001			268,637			—			268,637			—
Accrued interest payable	713			713			713			—			—
	December 31, 2012
	Carrying			Estimated			(Level 1)			(Level 2)			(Level 3)
	Value			Fair Value
ASSETS
Cash and cash equivalents	$	24,920		$	24,920		$	24,920		$	—		$	—
Certificates of deposit held in other financial institutions	4,465			4,475			—			4,475			—
Mortgage loans AFS	3,633			3,680			—			3,680			—
Total loans	772,753			784,964			—			—			784,964
Less allowance for loan and lease losses	(11,936		)	(11,936		)	—			—			(11,936		)
Net loans	760,817			773,028			—			—			773,028
Accrued interest receivable	5,227			5,227			5,227			—			—
Equity securities without readily determinable fair values (1)	18,118			18,118			—			—			—
OMSRs	2,285			2,285			—			2,285			—
LIABILITIES
Deposits without stated maturities	553,332			553,332			553,332			—			—
Deposits with stated maturities	464,335			472,630			—			472,630			—
Borrowed funds	241,001			248,822			—			248,822			—
Accrued interest payable	751			751			751			—			—
(1)	Due to the characteristics of equity securities without readily determinable fair values, they are not disclosed under a specific fair value hierarchy. If we were to record an impairment adjustment related to these securities, such amount would be classified as a nonrecurring Level 3 fair value adjustment.
Financial Instruments Recorded at Fair Value
The table below presents the recorded amount of assets and liabilities measured at fair value on:
	September 30, 2013												December 31, 2012
	Total			(Level 1)			(Level 2)			(Level 3)			Total			(Level 1)			(Level 2)			(Level 3)
Recurring items
Trading securities
States and political subdivisions	$	745		$	—		$	745		$	—		$	1,573		$	—		$	1,573		$	—
AFS Securities
Government-sponsored enterprises	24,155			—			24,155			—			25,776			—			25,776			—
States and political subdivisions	193,786			—			193,786			—			182,743			—			182,743			—
Auction rate money market preferred	2,639			—			2,639			—			2,778			—			2,778			—
Preferred stocks	6,144			6,144			—			—			6,363			6,363			—			—
Mortgage-backed securities	146,393			—			146,393			—			155,345			—			155,345			—
Collateralized mortgage obligations	127,940			—			127,940			—			131,005			—			131,005			—
Total AFS Securities	501,057			6,144			494,913			—			504,010			6,363			497,647			—
Nonrecurring items
Impaired loans (net of the ALLL)	20,520			—			—			20,520			22,021			—			—			22,021
Foreclosed assets	1,186			—			—			1,186			2,018			—			—			2,018
	$	523,508		$	6,144		$	495,658		$	21,706		$	529,622		$	6,363		$	499,220		$	24,039
Percent of assets and liabilities measured at fair value				1.17		%	94.68		%	4.15		%				1.2		%	94.26		%	4.54		%
The following table provides a summary of the changes in fair value of assets and liabilities recorded at fair value through earnings on a recurring basis and changes in assets and liabilities recorded at fair value on a nonrecurring basis, for which gains or losses were recognized in the three and nine month periods ended:
	Three Months Ended September 30
	2013									2012
	Trading			Other Gains			Total			Trading			Other Gains			Total
	Losses			(Losses)						Losses			(Losses)
Recurring items
Trading securities	$	(5	)	$	—		$	(5	)	$	(9	)	$	—		$	(9	)
Borrowed funds	—			—			—			—			—			—
Nonrecurring items
Foreclosed assets	—			(39		)	(39		)	—			—			—
Total	$	(5	)	$	(39	)	$	(44	)	$	(9	)	$	—		$	(9	)
	Nine Months Ended September 30
	2013									2012
	Trading			Other Gains			Total			Trading			Other Gains			Total
	Losses			(Losses)						Losses			(Losses)
Recurring items
Trading securities	$	(23	)	$	—		$	(23	)	$	(41	)	$	—		$	(41	)
Borrowed funds	—			—			—			—			33			33
Nonrecurring items
Foreclosed assets	—			(131		)	(131		)	—			(17		)	(17		)
Total	$	(23	)	$	(131	)	$	(154	)	$	(41	)	$	16		$	(25	)

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Notes)	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
ACCUMULATED OTHER COMPREHENSIVE INCOME	'
	Note 13 – Accumulated Other Comprehensive Income (Loss)
	The following table summarizes the changes in AOCI by component for the:
		Three Months Ended September 30
		2013									2012
		Unrealized			Defined			Total			Unrealized			Defined			Total
		Holding Gains			Benefit						Holding Gains			Benefit
		(Losses) on			Pension Plan						(Losses) on			Pension Plan
		AFS									AFS
		Securities									Securities
	1-Jul-13	$	(477	)	$	(3,671	)	$	(4,148	)	$	7,413		$	(3,453	)	$	3,960
	OCI before reclassifications	665			—			665			2,990			—			2,990
	Amounts reclassified from AOCI	(72		)	—			(72		)	(116		)	—			(116		)
	Subtotal	593			—			593			2,874			—			2,874
	Tax effect	(447		)	—			(447		)	(763		)	—			(763		)
	OCI, net of tax	146			—			146			2,111			—			2,111
	30-Sep-13	$	(331	)	$	(3,671	)	$	(4,002	)	$	9,524		$	(3,453	)	$	6,071
		Nine Months Ended September 30
		2013									2012
		Unrealized			Defined			Total			Unrealized			Defined			Total
		Holding Gains			Benefit						Holding Gains			Benefit
		(Losses) on			Pension Plan						(Losses) on			Pension Plan
		AFS									AFS
		Securities									Securities
	1-Jan-13	$	8,678		$	(3,671	)	$	5,007		$	5,942		$	(3,453	)	$	2,489
	OCI before reclassifications	(13,293		)	—			(13,293		)	5,209			—			5,209
	Amounts reclassified from AOCI	(171		)	—			(171		)	(837		)	—			(837		)
	Subtotal	(13,464		)	—			(13,464		)	4,372			—			4,372
	Tax effect	4,455			—			4,455			(790		)	—			(790		)
	OCI, net of tax	(9,009		)	—			(9,009		)	3,582			—			3,582
	30-Sep-13	$	(331	)	$	(3,671	)	$	(4,002	)	$	9,524		$	(3,453	)	$	6,071
	Included in OCI for the three and nine month periods ended September 30, 2013 and 2012 are changes in unrealized holding gains and losses related to auction rate money market preferred and preferred stocks. For federal income tax purposes, these securities are considered equity investments. As such, no deferred federal income taxes related to unrealized holding gains or losses are expected or recorded.
	The following table details reclassification adjustments and the related affected line items on our interim condensed consolidated statements of income for the noted periods:
	Details about AOCI components	Amount												Affected Line Item in the
		Reclassified from												Interim Condensed Consolidated
		AOCI												Statements of Income
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
	Unrealized holding gains (losses) on AFS securities
		$	72		$	116		$	171		$	1,119		Gain (loss) on sale of AFS securities
		—			—			—			(282		)	Net AFS impairment loss
		72			116			171			837			Income before federal income tax expense
		24			39			58			285			Federal income tax expense
		$	48		$	77		$	113		$	552		Net income

Parent_Company_Only_Financial_

Parent Company Only Financial Information	9 Months Ended
	Sep. 30, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
PARENT COMPANY ONLY FINANCIAL INFORMATION	'
	Note 14 – Parent Company Only Financial Information
	Interim Condensed Balance Sheets
		September 30			December 31
		2013			2012
	ASSETS
	Cash on deposit at the Bank	$	418		$	332
	AFS Securities	3,527			3,939
	Investments in subsidiaries	113,002			115,781
	Premises and equipment	2,045			2,041
	Other assets	52,454			52,398
	TOTAL ASSETS	$	171,446		$	174,491
	LIABILITIES AND SHAREHOLDERS’ EQUITY
	Other liabilities	$	10,141		$	10,002
	Shareholders' equity	161,305			164,489
	TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$	171,446		$	174,491
	Interim Condensed Statements of Income
		Three Months Ended						Nine Months Ended
		September 30						September 30
		2013			2012			2013		2012
	Income
	Dividends from subsidiaries	$	1,500		$	1,500		$	4,500	$	4,625
	Interest income	39			42			123		131
	Management fee and other	637			581			1,704		1,547
	Total income	2,176			2,123			6,327		6,303
	Expenses
	Compensation and benefits	680			596			2,061		1,810
	Occupancy and equipment	132			91			362		273
	Audit and related fees	98			98			256		273
	Other	230			220			731		717
	Total expenses	1,140			1,005			3,410		3,073
	Income before income tax benefit and equity in undistributed earnings of subsidiaries	1,036			1,118			2,917		3,230
	Federal income tax benefit	161			136			549		493
	Undistributed earnings of subsidiaries	2,089			2,203			6,120		5,972
	Net income	$	3,286		$	3,457		$	9,586	$	9,695
	Interim Condensed Statements of Cash Flows
		Nine Months Ended
		September 30
		2013			2012
	OPERATING ACTIVITIES
	Net income	$	9,586		$	9,695
	Adjustments to reconcile net income to cash provided by operations
	Undistributed earnings of subsidiaries	(6,120		)	(5,972		)
	Undistributed earnings of equity securities without readily determinable fair values	14			—
	Share-based payment awards	423			496
	Depreciation	136			84
	Net amortization of AFS securities	1			3
	Changes in operating assets and liabilities which used cash
	Other assets	(65		)	(363		)
	Accrued interest and other liabilities	939			(224		)
	NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	4,914			3,719
	INVESTING ACTIVITIES
	Maturities, calls, and sales of AFS securities	395			370
	Purchases of equipment and premises	(140		)	(112		)
	Advances to subsidiaries, net of repayments	(99		)	(50		)
	NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	156			208
	FINANCING ACTIVITIES
	Net increase (decrease) in borrowed funds	(800		)	(297		)
	Cash dividends paid on common stock	(4,838		)	(4,553		)
	Proceeds from the issuance of common stock	2,754			2,025
	Common stock repurchased	(1,815		)	(1,520		)
	Common stock purchased for deferred compensation obligations	(285		)	(361		)
	NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(4,984		)	(4,706		)
	INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	86			(779		)
Cash and cash equivalents at beginning of period	332			1,474
Cash and cash equivalents at end of period	$	418		$	695

Operating_Segments

Operating Segments	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
OPERATING SEGMENTS	'
	Note 15 – Operating Segments
	Our reportable segments are based on legal entities that account for at least 10% of net operating results. The operations of the Bank as of September 30, 2013 and 2012 and each of the three and nine month periods then ended, represented 90% or more of our consolidated total assets and operating results. As such, no additional segment reporting is presented.

Recently_Adopted_Accounting_St1

Recently Adopted Accounting Standards Update (Policies)	9 Months Ended
	Sep. 30, 2013
Accounting Changes and Error Corrections [Abstract]	'
Comprehensive Income	'
	ASU No. 2013-02: “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income”
	In February 2013, ASU No. 2013-02 amended ASC Topic 220, “Comprehensive Income” to require disclosures related to reclassifications out of AOCI in one place. The ASU also requires the disclosure of reclassifications out of AOCI by component. The new authoritative guidance was effective for interim and annual periods beginning after December 15, 2012 and did not have a financial impact on the Corporation, but increased the level of disclosures related to AOCI (see "Note 13 – Accumulated Other Comprehensive Income (Loss)").

Computation_of_Earnings_Per_Sh1

Computation of Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Computation of earnings per common share	'
	Earnings per common share have been computed based on the following:
		Three Months Ended				Nine Months Ended
		September 30				September 30
		2013		2012		2013		2012
	Average number of common shares outstanding for basic calculation	7,698,066		7,600,443		7,689,350		7,595,806
	Average potential effect of shares in the Directors Plan (1)	170,420		206,233		168,020		203,250
	Average number of common shares outstanding used to calculate diluted earnings per common share	7,868,486		7,806,676		7,857,370		7,799,056
	Net income	$	3,286	$	3,457	$	9,586	$	9,695
	Earnings per share
	Basic	$	0.43	$	0.45	$	1.25	$	1.28
	Diluted	$	0.42	$	0.44	$	1.22	$	1.24
	(1)	Exclusive of shares held in the Rabbi Trust

Trading_Securities_Tables

Trading Securities (Tables)	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
Schedule of trading securities, at fair value	'
	Trading securities, at fair value, consist of the following investments at:
		September 30		December 31
		2013		2012
	States and political subdivisions	$	745	$	1,573

AvailableforSale_Securities_Ta

Available-for-Sale Securities (Tables)	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
Amortized cost and fair value of available-for-sale securities	'
	The amortized cost and fair value of AFS securities, with gross unrealized gains and losses, are as follows at:
		30-Sep-13
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	Government sponsored enterprises	$	24,985	$	7	$	837	$	24,155
	States and political subdivisions	189,998		6,233		2,445		193,786
	Auction rate money market preferred	3,200		—		561		2,639
	Preferred stocks	6,800		2		658		6,144
	Mortgage-backed securities	147,875		1,239		2,721		146,393
	Collateralized mortgage obligations	128,073		1,331		1,464		127,940
	Total	$	500,931	$	8,812	$	8,686	$	501,057
		31-Dec-12
		Amortized		Gross		Gross		Fair
		Cost		Unrealized		Unrealized		Value
				Gains		Losses
	Government sponsored enterprises	$	25,668	$	108	$	—	$	25,776
	States and political subdivisions	174,118		9,190		565		182,743
	Auction rate money market preferred	3,200		—		422		2,778
	Preferred stocks	6,800		—		437		6,363
	Mortgage-backed securities	152,256		3,199		110		155,345
	Collateralized mortgage obligations	128,378		2,627		—		131,005
	Total	$	490,420	$	15,124	$	1,534	$	504,010
Amortized cost and fair value of available-for-sale securities by contractual maturity	'
	The amortized cost and fair value of AFS securities by contractual maturity at September 30, 2013 are as follows:
		Maturing								Securities with Variable Monthly Payments or Noncontractual Maturities
		Due in		After One		After Five		After				Total
		One Year		Year But		Years But		Ten Years
		or Less		Within		Within
				Five Years		Ten Years
	Government sponsored enterprises	$	—	$	72	$	24,913	$	—	$	—	$	24,985
	States and political subdivisions	5,068		35,993		93,353		55,584		—		189,998
	Auction rate money market preferred	—		—		—		—		3,200		3,200
	Preferred stocks	—		—		—		—		6,800		6,800
	Mortgage-backed securities	—		—		—		—		147,875		147,875
	Collateralized mortgage obligations	—		—		—		—		128,073		128,073
	Total amortized cost	$	5,068	$	36,065	$	118,266	$	55,584	$	285,948	$	500,931
	Fair value	$	5,237	$	37,363	$	120,324	$	55,017	$	283,116	$	501,057
Summary of the activity related to sales of available-for-sale securities	'
	A summary of the activity related to sales of AFS securities was as follows for the three and nine month periods ended:
		Three Months Ended				Nine Months Ended
		September 30				September 30
		2013		2012		2013		2012
	Proceeds from sales of AFS securities	$	6,372	$	16,436	$	16,229	$	40,677
	Gross realized gains (losses)	$	72	$	116	$	171	$	1,119
	Applicable income tax expense (benefit)	$	24	$	39	$	58	$	380
Available-for-sale securities with gross unrealized losses	'
	Information pertaining to AFS securities with gross unrealized losses at September 30, 2013 and December 31, 2012 aggregated by investment category and length of time that individual securities have been in a continuous loss position, follows:
		30-Sep-13
		Less Than Twelve Months				Twelve Months or More
		Gross		Fair		Gross		Fair		Total
		Unrealized		Value		Unrealized		Value		Unrealized
		Losses				Losses				Losses
	Government sponsored enterprises	$	837	$	23,157	$	—	$	—	$	837
	States and political subdivisions	1,952		39,713		493		2,069		2,445
	Auction rate money market preferred	—		—		561		2,639		561
	Preferred stocks	—		—		658		3,141		658
	Mortgage-backed securities	2,721		77,269		—		—		2,721
	Collateralized mortgage obligations	1,464		56,189		—		—		1,464
	Total	$	6,974	$	196,328	$	1,712	$	7,849	$	8,686
	Number of securities in an unrealized loss position:			154				6		160
		31-Dec-12
		Less Than Twelve Months				Twelve Months or More
		Gross		Fair		Gross		Fair		Total
		Unrealized		Value		Unrealized		Value		Unrealized
		Losses				Losses				Losses
	States and political subdivisions	$	80	$	5,019	$	485	$	2,352	$	565
	Auction rate money market preferred	—		—		422		2,778		422
	Preferred stocks	—		—		437		3,363		437
	Mortgage-backed securities	110		25,499		—		—		110
	Total	$	190	$	30,518	$	1,344	$	8,493	$	1,534
	Number of securities in an unrealized loss position:			15				6		21
Key valuation assumptions	'
	A summary of key valuation assumptions used in the aforementioned analysis as of March 31, 2012, follows:
		Discounted Cash Flow Method
	Ratings
	Fitch	Not Rated
	Moody’s	Caa3
	S&P	A
	Seniority	Senior
	Discount rate	LIBOR + 6.35%
		Credit Yield Analysis Method
	Credit discount rate	LIBOR + 4.00%
	Average observed discounts based on closed transactions	14.00%
Roll-forward of credit related impairment recognized in earnings	'
	The following table provides a roll-forward of credit related impairment recognized in earnings for the:
		Three Months Ended September 30				Nine Months Ended September 30
		2013		2012		2013		2012
	Balance at beginning of period	$	282	$	282	$	282	$	—
	Additions to credit losses for which no previous OTTI was recognized	—		—		—		282
	Balance at end of period	$	282	$	282	$	282	$	282

Loans_and_Allowance_for_Loan_L1

Loans and Allowance for Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2013
Receivables [Abstract]	'
Summary of changes in the ALLL and the recorded investment in loans by segments	'
		Allowance for Loan Losses
		Three Months Ended September 30, 2012
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	July 1, 2012	$	6,008			$	433			$	3,669			$	667			$	1,541			$	12,318
	Loans charged-off	(271		)		—				(213		)		(127		)		—				(611		)
	Recoveries	40				—				34				81				—				155
	Provision for loan losses	1,132				6				(356		)		91				(673		)		200
	September 30, 2012	$	6,909			$	439			$	3,134			$	712			$	868			$	12,062
		Allowance for Loan Losses
		Nine Months Ended September 30, 2012
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	January 1, 2012	$	6,284			$	1,003			$	2,980			$	633			$	1,475			$	12,375
	Loans charged-off	(957		)		—				(566		)		(364		)		—				(1,887		)
	Recoveries	168				—				95				211				—				474
	Provision for loan losses	1,414				(564		)		625				232				(607		)		1,100
	September 30, 2012	$	6,909			$	439			$	3,134			$	712			$	868			$	12,062
	A summary of changes in the ALLL and the recorded investment in loans by segments follows:
		Allowance for Loan Losses
		Three Months Ended September 30, 2013
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	July 1, 2013	$	6,472			$	335			$	3,676			$	647			$	570			$	11,700
	Loans charged-off	(394		)		(12		)		(94		)		(102		)		—				(602		)
	Recoveries	66				—				38				47				—				151
	Provision for loan losses	69				108				127				74				(27		)		351
	September 30, 2013	$	6,213			$	431			$	3,747			$	666			$	543			$	11,600
		Allowance for Loan Losses
		Nine Months Ended September 30, 2013
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	January 1, 2013	$	6,862			$	407			$	3,627			$	666			$	374			$	11,936
	Loans charged-off	(839		)		(12		)		(681		)		(311		)		—				(1,843		)
	Recoveries	289				—				152				200				—				641
	Provision for loan losses	(99		)		36				649				111				169				866
	September 30, 2013	$	6,213			$	431			$	3,747			$	666			$	543			$	11,600
Allowance for Loan Losses and Recorded Investment in Loans	'
		Allowance for Loan Losses and Recorded Investment in Loans
		31-Dec-12
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	ALLL
	Individually evaluated for impairment	$	2,050			$	91			$	1,796			$	—			$	—			$	3,937
	Collectively evaluated for impairment	4,812				316				1,831				666				374				7,999
	Total	$	6,862			$	407			$	3,627			$	666			$	374			$	11,936
	Loans
	Individually evaluated for impairment	$	14,456			$	723			$	10,704			$	75							$	25,958
	Collectively evaluated for impairment	357,049				82,883				273,444				33,419								746,795
	Total	$	371,505			$	83,606			$	284,148			$	33,494							$	772,753
		Allowance for Loan Losses and Recorded Investment in Loans
		30-Sep-13
		Commercial				Agricultural				Residential Real Estate				Consumer				Unallocated				Total
	ALLL
	Individually evaluated for impairment	$	2,080			$	31			$	1,890			$	—			$	—			$	4,001
	Collectively evaluated for impairment	4,133				400				1,857				666				543				7,599
	Total	$	6,213			$	431			$	3,747			$	666			$	543			$	11,600
	Loans
	Individually evaluated for impairment	$	12,155			$	787			$	11,514			$	65							$	24,521
	Collectively evaluated for impairment	376,818				92,140				280,311				34,059								783,328
	Total	$	388,973			$	92,927			$	291,825			$	34,124							$	807,849
Credit quality indicators for commercial and agricultural credit exposures	'
	The following table displays the credit quality indicators for commercial and agricultural credit exposures based on internally assigned credit ratings as of:
		30-Sep-13
		Commercial												Agricultural
		Real Estate				Other				Total				Real Estate				Other				Total
	Rating
	2 - High quality	$	21,334			$	15,823			$	37,157			$	3,665			$	3,005			$	6,670
	3 - High satisfactory	89,630				40,464				130,094				26,679				16,958				43,637
	4 - Low satisfactory	141,646				45,022				186,668				25,564				11,672				37,236
	5 - Special mention	13,246				1,256				14,502				1,917				1,027				2,944
	6 - Substandard	17,532				1,497				19,029				805				1,387				2,192
	7 - Vulnerable	1,085				186				1,271				—				248				248
	8 - Doubtful	234				18				252				—				—				—
	Total	$	284,707			$	104,266			$	388,973			$	58,630			$	34,297			$	92,927
		31-Dec-12
		Commercial												Agricultural
		Real Estate				Other				Total				Real Estate				Other				Total
	Rating
	2 - High quality	$	25,209			$	15,536			$	40,745			$	2,955			$	2,313			$	5,268
	3 - High satisfactory	83,805				28,974				112,779				16,972				11,886				28,858
	4 - Low satisfactory	127,423				45,143				172,566				27,291				15,437				42,728
	5 - Special mention	16,046				1,692				17,738				1,008				3,191				4,199
	6 - Substandard	20,029				2,224				22,253				1,167				1,217				2,384
	7 - Vulnerable	1,512				2,294				3,806				—				—				—
	8 - Doubtful	1,596				22				1,618				—				169				169
	Total	$	275,620			$	95,885			$	371,505			$	49,393			$	34,213			$	83,606
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'
	The following tables summarize the past due and current loans as of:
		30-Sep-13
		Accruing Interest																Total Past Due and Nonaccrual
		and Past Due:
		30-59				60-89				90 Days				Nonaccrual								Current				Total
		Days				Days				or More
	Commercial
	Commercial real estate	$	343			$	889			$	167			$	1,266			$	2,665			$	282,042			$	284,707
	Commercial other	867				32				—				239				1,138				103,128				104,266
	Total commercial	1,210				921				167				1,505				3,803				385,170				388,973
	Agricultural
	Agricultural real estate	642				—				—				—				642				57,988				58,630
	Agricultural other	214				450				—				262				926				33,371				34,297
	Total agricultural	856				450				—				262				1,568				91,359				92,927
	Residential real estate
	Senior liens	2,549				898				290				1,957				5,694				232,710				238,404
	Junior liens	166				—				—				68				234				13,649				13,883
	Home equity lines of credit	347				64				—				—				411				39,127				39,538
	Total residential real estate	3,062				962				290				2,025				6,339				285,486				291,825
	Consumer
	Secured	115				1				—				—				116				29,190				29,306
	Unsecured	6				10				—				20				36				4,782				4,818
	Total consumer	121				11				—				20				152				33,972				34,124
	Total	$	5,249			$	2,344			$	457			$	3,812			$	11,862			$	795,987			$	807,849
		31-Dec-12
		Accruing Interest																Total Past Due and Nonaccrual
		and Past Due:
		30-59				60-89				90 Days				Nonaccrual								Current				Total
		Days				Days				or More
	Commercial
	Commercial real estate	$	1,304			$	161			$	63			$	2,544			$	4,072			$	271,548			$	275,620
	Commercial other	606				—				40				2,294				2,940				92,945				95,885
	Total commercial	1,910				161				103				4,838				7,012				364,493				371,505
	Agricultural
	Agricultural real estate	—				—				—				—				—				49,393				49,393
	Agricultural other	90				—				—				169				259				33,954				34,213
	Total agricultural	90				—				—				169				259				83,347				83,606
	Residential real estate
	Senior liens	2,000				346				320				2,064				4,730				223,532				228,262
	Junior liens	232				—				—				50				282				16,207				16,489
	Home equity lines of credit	237				—				—				182				419				38,978				39,397
	Total residential real estate	2,469				346				320				2,296				5,431				278,717				284,148
	Consumer
	Secured	127				33				4				—				164				28,118				28,282
	Unsecured	31				3				1				—				35				5,177				5,212
	Total consumer	158				36				5				—				199				33,295				33,494
	Total	$	4,627			$	543			$	428			$	7,303			$	12,901			$	759,852			$	772,753
Information pertaining to impaired loans	'
	The following is a summary of information pertaining to impaired loans as of, and for the periods ended:
		30-Sep-13												31-Dec-12
		Outstanding Balance				Unpaid Principal Balance				Valuation Allowance				Outstanding Balance				Unpaid Principal Balance				Valuation Allowance
	Impaired loans with a valuation allowance
	Commercial real estate	$	6,023			$	6,161			$	1,818			$	7,295			$	7,536			$	1,653
	Commercial other	658				658				262				2,140				2,140				397
	Agricultural real estate	90				90				31				91				91				32
	Agricultural other	—				—				—				420				420				59
	Residential real estate senior liens	11,254				12,525				1,873				10,450				11,672				1,783
	Residential real estate junior liens	88				135				17				72				118				13
	Total impaired loans with a valuation allowance	$	18,113			$	19,569			$	4,001			$	20,468			$	21,977			$	3,937
	Impaired loans without a valuation allowance
	Commercial real estate	$	4,656			$	5,494							$	3,749			$	4,408
	Commercial other	818				928								1,272				1,433
	Agricultural real estate	329				329								—				—
	Agricultural other	368				488								212				332
	Home equity lines of credit	172				472								182				482
	Consumer secured	65				72								75				84
	Total impaired loans without a valuation allowance	$	6,408			$	7,783							$	5,490			$	6,739
	Impaired loans
	Commercial	$	12,155			$	13,241			$	2,080			$	14,456			$	15,517			$	2,050
	Agricultural	787				907				31				723				843				91
	Residential real estate	11,514				13,132				1,890				10,704				12,272				1,796
	Consumer	65				72				—				75				84				—
	Total impaired loans	$	24,521			$	27,352			$	4,001			$	25,958			$	28,716			$	3,937
		Three Months Ended								Nine Months Ended
		September 30, 2013								September 30, 2013
		Average Outstanding Balance				Interest Income Recognized				Average Outstanding Balance				Interest Income Recognized
	Impaired loans with a valuation allowance
	Commercial real estate	$	6,471			$	157			$	7,546			$	378
	Commercial other	1,063				29				976				67
	Agricultural real estate	91				2				91				4
	Agricultural other	—				—				70				—
	Residential real estate senior liens	10,865				230				10,595				439
	Residential real estate junior liens	80				4				84				5
	Total impaired loans with a valuation allowance	$	18,570			$	422			$	19,362			$	893
	Impaired loans without a valuation allowance
	Commercial real estate	$	4,531			$	169			$	4,037			$	327
	Commercial other	833				29				1,029				88
	Agricultural real estate	231				15				144				19
	Agricultural other	361				2				402				(2		)
	Home equity lines of credit	173				8				178				17
	Consumer secured	60				1				66				3
	Total impaired loans without a valuation allowance	$	6,189			$	224			$	5,856			$	452
	Impaired loans
	Commercial	$	12,898			$	384			$	13,588			$	860
	Agricultural	683				19				707				21
	Residential real estate	11,118				242				10,857				461
	Consumer	60				1				66				3
	Total impaired loans	$	24,759			$	646			$	25,218			$	1,345
		Three Months Ended								Nine Months Ended
		September 30, 2012								September 30, 2012
		Average Outstanding Balance				Interest Income Recognized				Average Outstanding Balance				Interest Income Recognized
	Impaired loans with a valuation allowance
	Commercial real estate	$	6,260			$	106			$	6,197			$	287
	Commercial other	1,996				67				1,183				95
	Agricultural real estate	—				—				—				—
	Agricultural other	1,023				—				1,878				73
	Residential real estate senior liens	7,994				88				7,803				263
	Residential real estate junior liens	158				3				174				7
	Total impaired loans with a valuation allowance	$	17,431			$	264			$	17,235			$	725
	Impaired loans without a valuation allowance
	Commercial real estate	$	5,651			$	72			$	6,749			$	251
Commercial other	2,026				15				1,860				80
Agricultural real estate	179				—				214				—
Agricultural other	1,417				34				869				41
Home equity lines of credit	188				6				194				14
Consumer secured	81				2				90				5
Total impaired loans without a valuation allowance	$	9,542			$	129			$	9,976			$	391
Impaired loans
Commercial	$	15,933			$	260			$	15,989			$	713
Agricultural	2,619				34				2,961				114
Residential real estate	8,340				97				8,171				284
Consumer	81				2				90				5
Total impaired loans	$	26,973			$	393			$	27,211			$	1,116
Information pertaining to TDR's	'
	The following is a summary of information pertaining to TDRs granted in the periods ended:
		Three Months Ended September 30, 2013											Nine Months Ended September 30, 2013
		Number of Loans			Pre-Modification Recorded Investment				Post-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Post-Modification Recorded Investment
	Commercial other	3			$	159			$	159			10			$	3,313			$	3,116
	Agricultural other	1			198				198				2			332				332
	Residential real estate senior liens	15			1,176				1,176				30			2,611				2,595
	Residential real estate junior liens	1			20				20				1			20				20
	Consumer unsecured	2			34				34				2			34				34
	Total	22			$	1,587			$	1,587			45			$	6,310			$	6,097
		Three Months Ended September 30, 2012											Nine Months Ended September 30, 2012
		Number of Loans			Pre-Modification Recorded Investment				Post-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Post-Modification Recorded Investment
	Commercial other	1			$	178			$	178			27			$	5,069			$	5,069
	Agricultural other	—			—				—				6			561				561
	Residential real estate senior liens	—			—				—				12			1,405				1,405
	Residential real estate junior liens	1			22				22				1			22				22
	Total	2			$	200			$	200			46			$	7,057			$	7,057
		Three Months Ended September 30, 2013														Nine Months Ended September 30, 2013
		Below Market Interest Rate							Below Market Interest Rate and Extension of Amortization Period							Below Market Interest Rate							Below Market Interest Rate and Extension of Amortization Period
		Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment
	Commercial other	3			$	159			—			$	—			6			$	1,517			4			$	1,796
	Agricultural other	1			198				—			—				2			332				—			—
	Residential real estate senior liens	10			924				5			252				17			1,548				13			1,063
	Residential real estate junior liens	—			—				1			20				—			—				1			20
	Consumer unsecured	1			16				1			18				1			16				1			18
	Total	15			$	1,297			7			$	290			26			$	3,413			19			$	2,897
		Three Months Ended September 30, 2012														Nine Months Ended September 30, 2012
		Below Market Interest Rate							Below Market Interest Rate and Extension of Amortization Period							Below Market Interest Rate							Below Market Interest Rate and Extension of Amortization Period
		Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment				Number of Loans			Pre-Modification Recorded Investment
	Commercial other	1			$	178			—			$	—			25			$	4,924			2			$	145
	Agricultural other	—			—				—			—				6			561				—			—
	Residential real estate senior liens	—			—				—			—				4			324				8			1,081
	Residential real estate junior liens	—			—				1			22				—			—				1			22
	Total	1			$	178			1			$	22			35			$	5,809			11			$	1,248
Summary of defaulted loans	'
	Following is a summary of loans that defaulted in the three and nine month periods ended September 30, 2012, which were modified within 12 months prior to the default date:
		Three Months Ended September 30, 2012															Nine Months Ended September 30, 2012
		Number of Loans			Pre-				Charge-Off				Post-				Number of Loans			Pre-				Charge-Off				Post-
					Default				Recorded				Default							Default				Recorded				Default
					Recorded				Upon				Recorded							Recorded				Upon				Recorded
					Investment				Default				Investment							Investment				Default				Investment
	Commercial other	2			$	50			$	25			$	25			3			$	132			$	66			$	66
	Residential real estate senior liens	—			—				—				—				1			47				43				4
	Consumer secured	1			8				8				—				1			8				8				—
	Total	3			$	58			$	33			$	25			5			$	187			$	117			$	70
Summary of TDR loan balances	'
	The following is a summary of TDR loan balances as of:
		September 30				December 31
		2013				2012
	TDRs	$	20,337			$	19,355

Equity_Securities_Without_Read1

Equity Securities Without Readily Determinable Fair Values (Tables)	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]	'
Schedule of equity securities without fair values	'
	Equity securities without readily determinable fair values consist of the following as of:
		September 30		December 31
		2013		2012
	FHLB Stock	$	8,100	$	7,850
	Corporate Settlement Solutions, LLC	7,030		7,040
	FRB Stock	1,879		1,879
	Valley Financial Corporation	1,000		1,000
	Other	344		349
	Total	$	18,353	$	18,118

Borrowed_Funds_Tables

Borrowed Funds (Tables)	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Summary of borrowed funds	'
	Borrowed funds consist of the following obligations as of:
		September 30				December 31
		2013				2012
		Amount		Rate		Amount			Rate
	FHLB advances	$	162,000	2.02	%	$	152,000		2.05	%
	Securities sold under agreements to repurchase without stated maturity dates	81,405		0.15	%	66,147			0.15	%
	Securities sold under agreements to repurchase with stated maturity dates	16,296		3.57	%	16,284			3.57	%
	Federal funds purchased	6,300		0.5	%	6,570			0.5	%
	Total	$	266,001	1.51	%	$	241,001		1.59	%
Schedule of maturity and weighted average interest rates of FHLB advances	'
	The following table lists the maturity and weighted average interest rates of FHLB advances as of:
		30-Sep-13				31-Dec-12
		Amount		Rate		Amount			Rate
	Fixed rate advances due 2014	$	10,000	0.48	%	$	10,000		0.48	%
	Fixed rate advances due 2015	32,000		0.84	%	42,000			1.12	%
	Fixed rate advances due 2016	10,000		2.15	%	10,000			2.15	%
	Fixed rate advances due 2017	30,000		1.95	%	40,000			2.15	%
	Fixed rate advances due 2018	40,000		2.35	%	20,000			2.86	%
	Fixed rate advances due 2019	20,000		3.11	%	20,000			3.73	%
	Fixed rate advances due 2020	10,000		1.98	%	10,000			1.98	%
	Fixed rate advances due 2023	10,000		3.9	%	—			—	%
	Total	$	162,000	2.02	%	$	152,000		2.05	%
Summary of short term borrowings	'
	The following table provides a summary of short-term borrowings for the three and nine month periods ended:
		Three Months Ended September 30, 2013							Three Months Ended September 30, 2012
		Maximum Month End Balance		Average Balance			Weighted Average Interest Rate During the Period		Maximum Month End Balance		Average Balance		Weighted Average Interest Rate During the Period
	Securities sold under agreements to repurchase without stated maturity dates	$	81,405	$	78,148		0.15	%	$	58,471	$	57,983	0.2	%
	Federal funds purchased	6,300		5,052			0.62	%	15,000		5,848		0.46	%
		Nine Months Ended September 30, 2013							Nine Months Ended September 30, 2012
		Maximum Month End Balance		Average Balance			Weighted Average Interest Rate During the Period		Maximum Month End Balance		Average Balance		Weighted Average Interest Rate During the Period
	Securities sold under agreements to repurchase without stated maturity dates	$	81,405	$	69,224		0.15	%	$	58,584	$	55,721	0.2	%
	Federal funds purchased	13,700		4,133			0.57	%	17,900		4,327		0.41	%
Summary of pledged certificates of deposit	'
	We had pledged certificates of deposit held in other financial institutions, trading securities, AFS securities, and 1-4 family residential real estate loans in the following amounts at:
		September 30		December 31
		2013		2012
	Pledged to secure borrowed funds	$	304,224	$	308,628
	Pledged to secure repurchase agreements	139,082		143,322
	Pledged for public deposits and for other purposes necessary or required by law	21,595		22,955
	Total	$	464,901	$	474,905

Other_Noninterest_Expenses_Tab

Other Noninterest Expenses (Tables)	9 Months Ended
	Sep. 30, 2013
Other Income and Expenses [Abstract]	'
Summary of expenses included in other noninterest expenses	'
	A summary of expenses included in other noninterest expenses are as follows for the:
		Three Months Ended				Nine Months Ended
		September 30				September 30
		2013		2012		2013		2012
	Marketing and community relations	$	271	$	610	$	945	$	1,639
	FDIC insurance premiums	267		218		812		646
	Directors fees	203		235		607		654
	Audit and related fees	189		179		490		509
	Education and travel	110		112		348		378
	Loan underwriting fees	97		89		336		272
	Postage and freight	103		105		296		300
	Printing and supplies	106		91		291		310
	Legal fees	87		50		267		193
	Consulting fees	68		92		223		350
	Other	500		455		1,533		1,431
	Total other	$	2,001	$	2,236	$	6,148	$	6,682

Federal_Income_Taxes_Tables

Federal Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Summary of federal income tax expense	'
	The reconciliation of the provision for federal income taxes and the amount computed at the federal statutory tax rate of 34% of income before federal income tax expense is as follows for the:
		Three Months Ended						Nine Months Ended
		September 30						September 30
		2013			2012			2013			2012
	Income taxes at 34% statutory rate	$	1,347		$	1,481		$	3,903		$	4,093
	Effect of nontaxable income
	Interest income on tax exempt municipal securities	(411		)	(391		)	(1,212		)	(1,170		)
	Earnings on corporate owned life insurance policies	(63		)	(58		)	(185		)	(176		)
	Other	(217		)	(147		)	(667		)	(439		)
	Total effect of nontaxable income	(691		)	(596		)	(2,064		)	(1,785		)
	Effect of nondeductible expenses	18			14			54			36
	Federal income tax expense	$	674		$	899		$	1,893		$	2,344
Summary of other comprehensive income (loss)	'
	A summary of OCI follows for the:
		Three Months Ended September 30
		2013									2012
		Auction Rate Money Market Preferred and Preferred Stocks			All Other AFS Securities			Total			Auction Rate Money Market Preferred and Preferred Stocks			All Other AFS Securities			Total
	Unrealized gains (losses) arising during the period	$	(653	)	$	1,318		$	665		$	630		$	2,360		$	2,990
	Reclassification adjustment for net realized (gains) losses included in net income	—			(72		)	(72		)	—			(116		)	(116		)
	Reclassification adjustment for impairment loss included in net income	—			—			—			—			—			—
	Net unrealized gains (losses)	(653		)	1,246			593			630			2,244			2,874
	Tax effect	—			(447		)	(447		)	—			(763		)	(763		)
	Unrealized gains (losses), net of tax	$	(653	)	$	799		$	146		$	630		$	1,481		$	2,111
		Nine Months Ended September 30
		2013									2012
		Auction Rate Money Market Preferred and Preferred Stocks			All Other AFS Securities			Total			Auction Rate Money Market Preferred and Preferred Stocks			All Other AFS Securities			Total
	Unrealized gains (losses) arising during the period	$	(358	)	$	(12,935	)	$	(13,293	)	$	2,049		$	3,160		$	5,209
	Reclassification adjustment for net realized (gains) losses included in net income	—			(171		)	(171		)	—			(1,119		)	(1,119		)
	Reclassification adjustment for impairment loss included in net income	—			—			—			—			282			282
	Net unrealized gains (losses)	(358		)	(13,106		)	(13,464		)	2,049			2,323			4,372
	Tax effect	—			4,455			4,455			—			(790		)	(790		)
	Unrealized gains (losses), net of tax	$	(358	)	$	(8,651	)	$	(9,009	)	$	2,049		$	1,533		$	3,582

Defined_Benefit_Pension_Plan_T

Defined Benefit Pension Plan (Tables)	9 Months Ended
	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]	'
Components of net periodic benefit cost	'
	Following are the components of net periodic benefit cost for the three and nine month periods ended:
		Three Months Ended						Nine Months Ended
		September 30						September 30
		2013			2012			2013			2012
	Interest cost on PBO	$	113		$	118		$	338		$	353
	Expected return on plan assets	(143		)	(127		)	(430		)	(381		)
	Amortization of unrecognized actuarial net loss	83			73			248			219
	Net periodic benefit cost	$	53		$	64		$	156		$	191

Fair_Value_Tables

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'
	The table below lists the quantitative information about impaired loans measured utilizing Level 3 fair value measurements as of:
		September 30, 2013
	Valuation Techniques	Fair Value		Unobservable Input	Range
	Discounted cash flow	$9,452		Duration of cash flows:	5-120 Months
				Reduction in interest rate from original loan terms:	5.00% - 6.38%
				Discount applied to collateral appraisal:
				Real Estate	20% - 30%
				Equipment	50%
	Discounted appraisal value	$11,068		Livestock	50%
				Cash crop inventory	50%
				Other inventory	75%
				Accounts receivable	75%
		December 31, 2012
	Valuation Techniques	Fair Value		Unobservable Input	Range
	Discounted cash flow	$8,726		Duration of cash flows:	14-120 Months
				Reduction in interest rate from original loan terms:	5.00% - 6.25%
				Discount applied to collateral appraisal:
				Real Estate	20% - 30%
				Equipment	50%
	Discounted appraisal value	$13,295		Livestock	50%
				Cash crop inventory	50%
				Other inventory	75%
				Accounts receivable	75%
Quantitative information related to foreclosed assets measured utilizing Level 3 fair value measurements	'
	The table below lists the quantitative information related to foreclosed assets measured utilizing Level 3 fair value measurements as of:
		September 30, 2013
	Valuation Techniques	Fair Value			Unobservable Input		Range
					Discount applied to collateral appraisal:
	Discounted appraisal value	$	1,186		Real Estate		20% - 30%
		31-Dec-12
	Valuation Techniques	Fair Value			Unobservable Input		Range
					Discount applied to collateral appraisal:
	Discounted appraisal value	$	2,018		Real Estate		20% - 30%
Carrying amount and estimated fair value of financial instruments not recorded at fair value	'
	The carrying amount and estimated fair value of financial instruments not recorded at fair value in their entirety on a recurring basis on our consolidated balance sheets are as follows as of:
		September 30, 2013
		Carrying			Estimated			(Level 1)			(Level 2)			(Level 3)
		Value			Fair Value
	ASSETS
	Cash and cash equivalents	$	21,604		$	21,604		$	21,604		$	—		$	—
	Certificates of deposit held in other financial institutions	2,045			2,048			—			2,048			—
	Mortgage loans AFS	712			722			—			722			—
	Total loans	807,849			808,884			—			—			808,884
	Less allowance for loan and lease losses	(11,600		)	(11,600		)	—			—			(11,600		)
	Net loans	796,249			797,284			—			—			797,284
	Accrued interest receivable	6,584			6,584			6,584			—			—
	Equity securities without readily determinable fair values (1)	18,353			18,353			—			—			—
	OMSRs	2,659			2,732			—			2,732			—
	LIABILITIES
	Deposits without stated maturities	574,860			574,860			574,860			—			—
	Deposits with stated maturities	449,071			451,336			—			451,336			—
	Borrowed funds	266,001			268,637			—			268,637			—
	Accrued interest payable	713			713			713			—			—
		December 31, 2012
		Carrying			Estimated			(Level 1)			(Level 2)			(Level 3)
		Value			Fair Value
	ASSETS
	Cash and cash equivalents	$	24,920		$	24,920		$	24,920		$	—		$	—
	Certificates of deposit held in other financial institutions	4,465			4,475			—			4,475			—
	Mortgage loans AFS	3,633			3,680			—			3,680			—
	Total loans	772,753			784,964			—			—			784,964
	Less allowance for loan and lease losses	(11,936		)	(11,936		)	—			—			(11,936		)
	Net loans	760,817			773,028			—			—			773,028
	Accrued interest receivable	5,227			5,227			5,227			—			—
	Equity securities without readily determinable fair values (1)	18,118			18,118			—			—			—
	OMSRs	2,285			2,285			—			2,285			—
	LIABILITIES
	Deposits without stated maturities	553,332			553,332			553,332			—			—
	Deposits with stated maturities	464,335			472,630			—			472,630			—
	Borrowed funds	241,001			248,822			—			248,822			—
	Accrued interest payable	751			751			751			—			—
	(1)	Due to the characteristics of equity securities without readily determinable fair values, they are not disclosed under a specific fair value hierarchy. If we were to record an impairment adjustment related to these securities, such amount would be classified as a nonrecurring Level 3 fair value adjustment.
Assets and liabilities measured at fair value	'
	The table below presents the recorded amount of assets and liabilities measured at fair value on:
		September 30, 2013												December 31, 2012
		Total			(Level 1)			(Level 2)			(Level 3)			Total			(Level 1)			(Level 2)			(Level 3)
	Recurring items
	Trading securities
	States and political subdivisions	$	745		$	—		$	745		$	—		$	1,573		$	—		$	1,573		$	—
	AFS Securities
	Government-sponsored enterprises	24,155			—			24,155			—			25,776			—			25,776			—
	States and political subdivisions	193,786			—			193,786			—			182,743			—			182,743			—
	Auction rate money market preferred	2,639			—			2,639			—			2,778			—			2,778			—
	Preferred stocks	6,144			6,144			—			—			6,363			6,363			—			—
	Mortgage-backed securities	146,393			—			146,393			—			155,345			—			155,345			—
	Collateralized mortgage obligations	127,940			—			127,940			—			131,005			—			131,005			—
	Total AFS Securities	501,057			6,144			494,913			—			504,010			6,363			497,647			—
	Nonrecurring items
	Impaired loans (net of the ALLL)	20,520			—			—			20,520			22,021			—			—			22,021
	Foreclosed assets	1,186			—			—			1,186			2,018			—			—			2,018
		$	523,508		$	6,144		$	495,658		$	21,706		$	529,622		$	6,363		$	499,220		$	24,039
	Percent of assets and liabilities measured at fair value				1.17		%	94.68		%	4.15		%				1.2		%	94.26		%	4.54		%
Changes in fair value of assets and liabilities recorded at fair value	'
	The following table provides a summary of the changes in fair value of assets and liabilities recorded at fair value through earnings on a recurring basis and changes in assets and liabilities recorded at fair value on a nonrecurring basis, for which gains or losses were recognized in the three and nine month periods ended:
		Three Months Ended September 30
		2013									2012
		Trading			Other Gains			Total			Trading			Other Gains			Total
		Losses			(Losses)						Losses			(Losses)
	Recurring items
	Trading securities	$	(5	)	$	—		$	(5	)	$	(9	)	$	—		$	(9	)
	Borrowed funds	—			—			—			—			—			—
	Nonrecurring items
	Foreclosed assets	—			(39		)	(39		)	—			—			—
	Total	$	(5	)	$	(39	)	$	(44	)	$	(9	)	$	—		$	(9	)
		Nine Months Ended September 30
		2013									2012
		Trading			Other Gains			Total			Trading			Other Gains			Total
		Losses			(Losses)						Losses			(Losses)
	Recurring items
	Trading securities	$	(23	)	$	—		$	(23	)	$	(41	)	$	—		$	(41	)
	Borrowed funds	—			—			—			—			33			33
	Nonrecurring items
	Foreclosed assets	—			(131		)	(131		)	—			(17		)	(17		)
	Total	$	(23	)	$	(131	)	$	(154	)	$	(41	)	$	16		$	(25	)

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Summary of the components of accumulated other comprehensive income	'
	The following table summarizes the changes in AOCI by component for the:
		Three Months Ended September 30
		2013									2012
		Unrealized			Defined			Total			Unrealized			Defined			Total
		Holding Gains			Benefit						Holding Gains			Benefit
		(Losses) on			Pension Plan						(Losses) on			Pension Plan
		AFS									AFS
		Securities									Securities
	1-Jul-13	$	(477	)	$	(3,671	)	$	(4,148	)	$	7,413		$	(3,453	)	$	3,960
	OCI before reclassifications	665			—			665			2,990			—			2,990
	Amounts reclassified from AOCI	(72		)	—			(72		)	(116		)	—			(116		)
	Subtotal	593			—			593			2,874			—			2,874
	Tax effect	(447		)	—			(447		)	(763		)	—			(763		)
	OCI, net of tax	146			—			146			2,111			—			2,111
	30-Sep-13	$	(331	)	$	(3,671	)	$	(4,002	)	$	9,524		$	(3,453	)	$	6,071
		Nine Months Ended September 30
		2013									2012
		Unrealized			Defined			Total			Unrealized			Defined			Total
		Holding Gains			Benefit						Holding Gains			Benefit
		(Losses) on			Pension Plan						(Losses) on			Pension Plan
		AFS									AFS
		Securities									Securities
	1-Jan-13	$	8,678		$	(3,671	)	$	5,007		$	5,942		$	(3,453	)	$	2,489
	OCI before reclassifications	(13,293		)	—			(13,293		)	5,209			—			5,209
	Amounts reclassified from AOCI	(171		)	—			(171		)	(837		)	—			(837		)
	Subtotal	(13,464		)	—			(13,464		)	4,372			—			4,372
	Tax effect	4,455			—			4,455			(790		)	—			(790		)
	OCI, net of tax	(9,009		)	—			(9,009		)	3,582			—			3,582
	30-Sep-13	$	(331	)	$	(3,671	)	$	(4,002	)	$	9,524		$	(3,453	)	$	6,071
Details about accumulated other comprehensive income components	'
	The following table details reclassification adjustments and the related affected line items on our interim condensed consolidated statements of income for the noted periods:
	Details about AOCI components	Amount												Affected Line Item in the
		Reclassified from												Interim Condensed Consolidated
		AOCI												Statements of Income
		Three Months Ended September 30						Nine Months Ended September 30
		2013			2012			2013			2012
	Unrealized holding gains (losses) on AFS securities
		$	72		$	116		$	171		$	1,119		Gain (loss) on sale of AFS securities
		—			—			—			(282		)	Net AFS impairment loss
		72			116			171			837			Income before federal income tax expense
		24			39			58			285			Federal income tax expense
		$	48		$	77		$	113		$	552		Net income

Parent_Company_Only_Financial_1

Parent Company Only Financial Information (Tables)	9 Months Ended
	Sep. 30, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Interim Condensed Balance Sheets	'
	Interim Condensed Balance Sheets
		September 30			December 31
		2013			2012
	ASSETS
	Cash on deposit at the Bank	$	418		$	332
	AFS Securities	3,527			3,939
	Investments in subsidiaries	113,002			115,781
	Premises and equipment	2,045			2,041
	Other assets	52,454			52,398
	TOTAL ASSETS	$	171,446		$	174,491
	LIABILITIES AND SHAREHOLDERS’ EQUITY
	Other liabilities	$	10,141		$	10,002
	Shareholders' equity	161,305			164,489
	TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$	171,446		$	174,491
Interim Condensed Statements of Income	'
	Interim Condensed Statements of Income
		Three Months Ended						Nine Months Ended
		September 30						September 30
		2013			2012			2013		2012
	Income
	Dividends from subsidiaries	$	1,500		$	1,500		$	4,500	$	4,625
	Interest income	39			42			123		131
	Management fee and other	637			581			1,704		1,547
	Total income	2,176			2,123			6,327		6,303
	Expenses
	Compensation and benefits	680			596			2,061		1,810
	Occupancy and equipment	132			91			362		273
	Audit and related fees	98			98			256		273
	Other	230			220			731		717
	Total expenses	1,140			1,005			3,410		3,073
	Income before income tax benefit and equity in undistributed earnings of subsidiaries	1,036			1,118			2,917		3,230
	Federal income tax benefit	161			136			549		493
	Undistributed earnings of subsidiaries	2,089			2,203			6,120		5,972
	Net income	$	3,286		$	3,457		$	9,586	$	9,695
Interim Condensed Statements of Cash Flows	'
	Interim Condensed Statements of Cash Flows
		Nine Months Ended
		September 30
		2013			2012
	OPERATING ACTIVITIES
	Net income	$	9,586		$	9,695
	Adjustments to reconcile net income to cash provided by operations
	Undistributed earnings of subsidiaries	(6,120		)	(5,972		)
	Undistributed earnings of equity securities without readily determinable fair values	14			—
	Share-based payment awards	423			496
	Depreciation	136			84
	Net amortization of AFS securities	1			3
	Changes in operating assets and liabilities which used cash
	Other assets	(65		)	(363		)
	Accrued interest and other liabilities	939			(224		)
	NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	4,914			3,719
	INVESTING ACTIVITIES
	Maturities, calls, and sales of AFS securities	395			370
	Purchases of equipment and premises	(140		)	(112		)
	Advances to subsidiaries, net of repayments	(99		)	(50		)
	NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	156			208
	FINANCING ACTIVITIES
	Net increase (decrease) in borrowed funds	(800		)	(297		)
	Cash dividends paid on common stock	(4,838		)	(4,553		)
	Proceeds from the issuance of common stock	2,754			2,025
	Common stock repurchased	(1,815		)	(1,520		)
	Common stock purchased for deferred compensation obligations	(285		)	(361		)
	NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(4,984		)	(4,706		)
	INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	86			(779		)
	Cash and cash equivalents at beginning of period	332			1,474
	Cash and cash equivalents at end of period	$	418		$	695

Computation_of_Earnings_Per_Sh2

Computation of Earnings Per Share (Schedule of Earnings Per Share) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Computation of earnings per share	'		'		'		'
Average number of common shares outstanding for basic calculation	7,698,066		7,600,443		7,689,350		7,595,806
Average potential effect of shares in the Directors Plan (1)	170,420	[1]	206,233	[1]	168,020	[1]	203,250	[1]
Average number of common shares outstanding used to calculate diluted earnings per common share	7,868,486		7,806,676		7,857,370		7,799,056
Net income	$3,286		$3,457		$9,586		$9,695
Earnings per share	'		'		'		'
Basic	$0.43		$0.45		$1.25		$1.28
Diluted	$0.42		$0.44		$1.22		$1.24
[1]	Exclusive of shares held in the Rabbi Trust

Trading_Securities_Trading_sec

Trading Securities (Trading securities, at fair value) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of trading securities, at fair value	'	'
States and political subdivisions	$745	$1,573

Trading_Securities_Narrative_D

Trading Securities (Narrative) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Trading Securities (Textual) [Abstract]	'	'
Trading Security	($23)	($41)
Net unrealized trading losses	($4)	($13)

AvailableforSale_Securities_Am

Available-for-Sale Securities (Amortized cost and fair value of AFS securities, with gross unrealized gains and losses) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Amortized cost and fair value of available-for-sale securities	'	'
Amortized Cost	$500,931	$490,420
Gross Unrealized Gains	8,812	15,124
Gross Unrealized Losses	8,686	1,534
Fair Value, Total	501,057	504,010
Auction rate money market preferred [Member]	'	'
Amortized cost and fair value of available-for-sale securities	'	'
Amortized Cost	3,200	3,200
Gross Unrealized Gains	0	0
Gross Unrealized Losses	561	422
Fair Value, Total	2,639	2,778
Collateralized mortgage obligations [Member]	'	'
Amortized cost and fair value of available-for-sale securities	'	'
Amortized Cost	128,073	128,378
Gross Unrealized Gains	1,331	2,627
Gross Unrealized Losses	1,464	0
Fair Value, Total	127,940	131,005
Government sponsored enterprises [Member]	'	'
Amortized cost and fair value of available-for-sale securities	'	'
Amortized Cost	24,985	25,668
Gross Unrealized Gains	7	108
Gross Unrealized Losses	837	0
Fair Value, Total	24,155	25,776
States and political subdivisions [Member]	'	'
Amortized cost and fair value of available-for-sale securities	'	'
Amortized Cost	189,998	174,118
Gross Unrealized Gains	6,233	9,190
Gross Unrealized Losses	2,445	565
Fair Value, Total	193,786	182,743
Preferred stocks [Member]	'	'
Amortized cost and fair value of available-for-sale securities	'	'
Amortized Cost	6,800	6,800
Gross Unrealized Gains	2	0
Gross Unrealized Losses	658	437
Fair Value, Total	6,144	6,363
Mortgage-backed securities [Member]	'	'
Amortized cost and fair value of available-for-sale securities	'	'
Amortized Cost	147,875	152,256
Gross Unrealized Gains	1,239	3,199
Gross Unrealized Losses	2,721	110
Fair Value, Total	$146,393	$155,345

AvailableforSale_Securities_Am1

Available-for-Sale Securities (Amortized cost and fair value of AFS securities by contractual maturity) (Details) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Amortized cost and fair value of available-for-sale securities by contractual maturity	'
Maturing, Due in One Year or Less	$5,068
Maturing, After One Year But Within Five Years	36,065
Maturing, After Five Years But Within Ten Years	118,266
Maturing, After Ten Years	55,584
Securities With Variable Monthly Payments or Noncontractual Maturities	285,948
Total	500,931
Maturing, Due in One Year or Less, Fair value	5,237
Maturing, After One Year But Within Five Years, Fair value	37,363
Maturing, After Five Years But Within Ten Years, Fair value	120,324
Maturing, After Ten Years, Fair value	55,017
Securities With Variable Monthly Payments or Noncontractual Maturities, Fair value	283,116
Total, Fair value	501,057
Auction rate money market preferred [Member]	'
Amortized cost and fair value of available-for-sale securities by contractual maturity	'
Maturing, Due in One Year or Less	0
Maturing, After One Year But Within Five Years	0
Maturing, After Five Years But Within Ten Years	0
Maturing, After Ten Years	0
Securities With Variable Monthly Payments or Noncontractual Maturities	3,200
Total	3,200
Collateralized mortgage obligations [Member]	'
Amortized cost and fair value of available-for-sale securities by contractual maturity	'
Maturing, Due in One Year or Less	0
Maturing, After One Year But Within Five Years	0
Maturing, After Five Years But Within Ten Years	0
Maturing, After Ten Years	0
Securities With Variable Monthly Payments or Noncontractual Maturities	128,073
Total	128,073
Government sponsored enterprises [Member]	'
Amortized cost and fair value of available-for-sale securities by contractual maturity	'
Maturing, Due in One Year or Less	0
Maturing, After One Year But Within Five Years	72
Maturing, After Five Years But Within Ten Years	24,913
Maturing, After Ten Years	0
Securities With Variable Monthly Payments or Noncontractual Maturities	0
Total	24,985
States and political subdivisions [Member]	'
Amortized cost and fair value of available-for-sale securities by contractual maturity	'
Maturing, Due in One Year or Less	5,068
Maturing, After One Year But Within Five Years	35,993
Maturing, After Five Years But Within Ten Years	93,353
Maturing, After Ten Years	55,584
Securities With Variable Monthly Payments or Noncontractual Maturities	0
Total	189,998
Preferred stocks [Member]	'
Amortized cost and fair value of available-for-sale securities by contractual maturity	'
Maturing, Due in One Year or Less	0
Maturing, After One Year But Within Five Years	0
Maturing, After Five Years But Within Ten Years	0
Maturing, After Ten Years	0
Securities With Variable Monthly Payments or Noncontractual Maturities	6,800
Total	6,800
Mortgage-backed securities [Member]	'
Amortized cost and fair value of available-for-sale securities by contractual maturity	'
Maturing, Due in One Year or Less	0
Maturing, After One Year But Within Five Years	0
Maturing, After Five Years But Within Ten Years	0
Maturing, After Ten Years	0
Securities With Variable Monthly Payments or Noncontractual Maturities	147,875
Total	$147,875

AvailableforSale_Securities_Ac

Available-for-Sale Securities (Activity related to sales of AFS securities) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Summary of the activity related to sales of available-for-sale securities	'	'	'	'
Proceeds from sales of AFS of securities	$6,372	$16,436	$16,229	$40,677
Gross realized gains (losses)	72	116	171	1,119
Applicable income tax expense	$24	$39	$58	$380

AvailableforSale_Securities_AF

Available-for-Sale Securities (AFS securities with gross unrealized losses) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified	Securities	Securities
Available-for-sale securities with gross unrealized losses	'	'
Gross Unrealized Losses, Less Than Twelve Months	$6,974	$190
Fair Value, Less Than Twelve Months	196,328	30,518
Gross Unrealized Losses, Twelve Months or More	1,712	1,344
Fair Value, Twelve Months or More	7,849	8,493
Total Unrealized Losses	8,686	1,534
Number of Securities in an unrealized loss position, Less Than Twelve Months, Fair Value	154	15
Number of Securities in an unrealized loss position, Twelve Months or More, Fair Value	6	6
Number of Securities in an unrealized loss position, Total Unrealized Losses	160	21
Auction rate money market preferred [Member]	'	'
Available-for-sale securities with gross unrealized losses	'	'
Gross Unrealized Losses, Less Than Twelve Months	0	0
Fair Value, Less Than Twelve Months	0	0
Gross Unrealized Losses, Twelve Months or More	561	422
Fair Value, Twelve Months or More	2,639	2,778
Total Unrealized Losses	561	422
Collateralized mortgage obligations [Member]	'	'
Available-for-sale securities with gross unrealized losses	'	'
Gross Unrealized Losses, Less Than Twelve Months	1,464	'
Fair Value, Less Than Twelve Months	56,189	'
Gross Unrealized Losses, Twelve Months or More	0	'
Fair Value, Twelve Months or More	0	'
Total Unrealized Losses	1,464	'
Government sponsored enterprises [Member]	'	'
Available-for-sale securities with gross unrealized losses	'	'
Gross Unrealized Losses, Less Than Twelve Months	837	'
Fair Value, Less Than Twelve Months	23,157	'
Gross Unrealized Losses, Twelve Months or More	0	'
Fair Value, Twelve Months or More	0	'
Total Unrealized Losses	837	'
States and political subdivisions [Member]	'	'
Available-for-sale securities with gross unrealized losses	'	'
Gross Unrealized Losses, Less Than Twelve Months	1,952	80
Fair Value, Less Than Twelve Months	39,713	5,019
Gross Unrealized Losses, Twelve Months or More	493	485
Fair Value, Twelve Months or More	2,069	2,352
Total Unrealized Losses	2,445	565
Preferred stocks [Member]	'	'
Available-for-sale securities with gross unrealized losses	'	'
Gross Unrealized Losses, Less Than Twelve Months	0	0
Fair Value, Less Than Twelve Months	0	0
Gross Unrealized Losses, Twelve Months or More	658	437
Fair Value, Twelve Months or More	3,141	3,363
Total Unrealized Losses	658	437
Mortgage-backed securities [Member]	'	'
Available-for-sale securities with gross unrealized losses	'	'
Gross Unrealized Losses, Less Than Twelve Months	2,721	110
Fair Value, Less Than Twelve Months	77,269	25,499
Gross Unrealized Losses, Twelve Months or More	0	0
Fair Value, Twelve Months or More	0	0
Total Unrealized Losses	$2,721	$110

AvailableforSale_Securities_Ke

Available-for-Sale Securities (Key valuation assumptions) (Details) (Auction Rate Securities [Member])	3 Months Ended
	Mar. 31, 2012
Discounted Cash Flow [Member]	'
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]	'
Discount rate, valuation basis	'LIBOR
Discount rate, basis spread on valuation	6.35%
Credit Yield Analysis [Member]	'
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]	'
Discount rate, valuation basis	'LIBOR
Discount rate, basis spread on valuation	4.00%
Average observed discounts based on closed transactions	14.00%

AvailableforSale_Securities_Ro

Available-for-Sale Securities (Roll-forward of credit related impairment recognized in earnings) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Roll-forward of credit related impairment recognized in earnings	'	'	'	'
Balance at beginning of period	$282	$282	$282	$0
Additions to credit losses for which no previous OTTI was recognized	0	0	0	282
Balance at end of period	$282	$282	$282	$282

AvailableforSale_Securities_Na

Available-for-Sale Securities (Narrative) (Details) (USD $)	3 Months Ended	9 Months Ended
	Mar. 31, 2012	Sep. 30, 2013
	Method
	Securities
Available-for-sale Securities (Textual) [Abstract]	'	'
Number of state issued student loan	1	'
Number of method used for evaluation	2	'
Other than temporary impairment loss recognized in earnings for the first quarter	$282,000	'
Additional OTTI	'	$0

Loans_and_Allowance_for_Loan_L2

Loans and Allowance for Loan Losses (Summary of changes in ALLL by segments) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Summary of changes in the ALLL and the recorded investment in loans by segments	'	'	'	'
Allowance for loan losses, Beginning Balance	$11,700	$12,318	$11,936	$12,375
Allowance for loan losses, Loans charged off	-602	-611	-1,843	-1,887
Allowance for loan losses, Recoveries	151	155	641	474
Allowance for loan losses, Provision for loan losses	351	200	866	1,100
Allowance for loan losses, Ending Balance	11,600	12,062	11,600	12,062
Commercial [Member]	'	'	'	'
Summary of changes in the ALLL and the recorded investment in loans by segments	'	'	'	'
Allowance for loan losses, Beginning Balance	6,472	6,008	6,862	6,284
Allowance for loan losses, Loans charged off	-394	-271	-839	-957
Allowance for loan losses, Recoveries	66	40	289	168
Allowance for loan losses, Provision for loan losses	69	1,132	-99	1,414
Allowance for loan losses, Ending Balance	6,213	6,909	6,213	6,909
Agricultural [Member]	'	'	'	'
Summary of changes in the ALLL and the recorded investment in loans by segments	'	'	'	'
Allowance for loan losses, Beginning Balance	335	433	407	1,003
Allowance for loan losses, Loans charged off	-12	0	-12	0
Allowance for loan losses, Recoveries	0	0	0	0
Allowance for loan losses, Provision for loan losses	108	6	36	-564
Allowance for loan losses, Ending Balance	431	439	431	439
Residential Real Estate [Member]	'	'	'	'
Summary of changes in the ALLL and the recorded investment in loans by segments	'	'	'	'
Allowance for loan losses, Beginning Balance	3,676	3,669	3,627	2,980
Allowance for loan losses, Loans charged off	-94	-213	-681	-566
Allowance for loan losses, Recoveries	38	34	152	95
Allowance for loan losses, Provision for loan losses	127	-356	649	625
Allowance for loan losses, Ending Balance	3,747	3,134	3,747	3,134
Consumer [Member]	'	'	'	'
Summary of changes in the ALLL and the recorded investment in loans by segments	'	'	'	'
Allowance for loan losses, Beginning Balance	647	667	666	633
Allowance for loan losses, Loans charged off	-102	-127	-311	-364
Allowance for loan losses, Recoveries	47	81	200	211
Allowance for loan losses, Provision for loan losses	74	91	111	232
Allowance for loan losses, Ending Balance	666	712	666	712
Unallocated [Member]	'	'	'	'
Summary of changes in the ALLL and the recorded investment in loans by segments	'	'	'	'
Allowance for loan losses, Beginning Balance	570	1,541	374	1,475
Allowance for loan losses, Loans charged off	0	0	0	0
Allowance for loan losses, Recoveries	0	0	0	0
Allowance for loan losses, Provision for loan losses	-27	-673	169	-607
Allowance for loan losses, Ending Balance	$543	$868	$543	$868

Loans_and_Allowance_for_Loan_L3

Loans and Allowance for Loan Losses (Summary of recorded investment in loans by segments) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Allowance for loan losses [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	$4,001	$3,937
Collectively evaluated for impairment	7,599	7,999
Total	11,600	11,936
Loans [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	24,521	25,958
Collectively evaluated for impairment	783,328	746,795
Total	807,849	772,753
Commercial [Member] | Allowance for loan losses [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	2,080	2,050
Collectively evaluated for impairment	4,133	4,812
Total	6,213	6,862
Commercial [Member] | Loans [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	12,155	14,456
Collectively evaluated for impairment	376,818	357,049
Total	388,973	371,505
Agricultural [Member] | Allowance for loan losses [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	31	91
Collectively evaluated for impairment	400	316
Total	431	407
Agricultural [Member] | Loans [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	787	723
Collectively evaluated for impairment	92,140	82,883
Total	92,927	83,606
Residential Real Estate [Member] | Allowance for loan losses [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	1,890	1,796
Collectively evaluated for impairment	1,857	1,831
Total	3,747	3,627
Residential Real Estate [Member] | Loans [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	11,514	10,704
Collectively evaluated for impairment	280,311	273,444
Total	291,825	284,148
Consumer [Member] | Allowance for loan losses [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	666	666
Total	666	666
Consumer [Member] | Loans [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	65	75
Collectively evaluated for impairment	34,059	33,419
Total	34,124	33,494
Unallocated [Member] | Allowance for loan losses [Member]	'	'
Allowance for Loan Losses and Recorded Investment in Loans	'	'
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	543	374
Total	$543	$374

Loans_and_Allowance_for_Loan_L4

Loans and Allowance for Loan Losses (Credit quality indicators for commercial and agricultural credit exposures) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	$796,249	$760,817
Commercial real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	284,707	275,620
Commercial other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	104,266	95,885
Total commercial [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	388,973	371,505
Agricultural real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	58,630	49,393
Agricultural other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	34,297	34,213
Total agricultural [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	92,927	83,606
2 - High quality [Member] | Commercial real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	21,334	25,209
2 - High quality [Member] | Commercial other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	15,823	15,536
2 - High quality [Member] | Total commercial [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	37,157	40,745
2 - High quality [Member] | Agricultural real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	3,665	2,955
2 - High quality [Member] | Agricultural other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	3,005	2,313
2 - High quality [Member] | Total agricultural [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	6,670	5,268
3 - High satisfactory [Member] | Commercial real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	89,630	83,805
3 - High satisfactory [Member] | Commercial other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	40,464	28,974
3 - High satisfactory [Member] | Total commercial [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	130,094	112,779
3 - High satisfactory [Member] | Agricultural real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	26,679	16,972
3 - High satisfactory [Member] | Agricultural other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	16,958	11,886
3 - High satisfactory [Member] | Total agricultural [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	43,637	28,858
4 - Low satisfactory [Member] | Commercial real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	141,646	127,423
4 - Low satisfactory [Member] | Commercial other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	45,022	45,143
4 - Low satisfactory [Member] | Total commercial [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	186,668	172,566
4 - Low satisfactory [Member] | Agricultural real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	25,564	27,291
4 - Low satisfactory [Member] | Agricultural other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	11,672	15,437
4 - Low satisfactory [Member] | Total agricultural [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	37,236	42,728
5 - Special mention [Member] | Commercial real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	13,246	16,046
5 - Special mention [Member] | Commercial other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	1,256	1,692
5 - Special mention [Member] | Total commercial [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	14,502	17,738
5 - Special mention [Member] | Agricultural real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	1,917	1,008
5 - Special mention [Member] | Agricultural other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	1,027	3,191
5 - Special mention [Member] | Total agricultural [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	2,944	4,199
6 - Substandard [Member] | Commercial real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	17,532	20,029
6 - Substandard [Member] | Commercial other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	1,497	2,224
6 - Substandard [Member] | Total commercial [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	19,029	22,253
6 - Substandard [Member] | Agricultural real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	805	1,167
6 - Substandard [Member] | Agricultural other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	1,387	1,217
6 - Substandard [Member] | Total agricultural [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	2,192	2,384
7 - Vulnerable [Member] | Commercial real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	1,085	1,512
7 - Vulnerable [Member] | Commercial other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	186	2,294
7 - Vulnerable [Member] | Total commercial [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	1,271	3,806
7 - Vulnerable [Member] | Agricultural real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	0	0
7 - Vulnerable [Member] | Agricultural other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	248	0
7 - Vulnerable [Member] | Total agricultural [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	248	0
8 - Doubtful [Member] | Commercial real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	234	1,596
8 - Doubtful [Member] | Commercial other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	18	22
8 - Doubtful [Member] | Total commercial [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	252	1,618
8 - Doubtful [Member] | Agricultural real estate [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	0	0
8 - Doubtful [Member] | Agricultural other [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	0	169
8 - Doubtful [Member] | Total agricultural [Member]	'	'
Credit quality indicators for commercial and agricultural credit exposures	'	'
Total	$0	$169

Loans_and_Allowance_for_Loan_L5

Loans and Allowance for Loan Losses (Past due and current loans) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	$5,249	$4,627
Accruing Interest and Past Due: 60-89 Days	2,344	543
Accruing Interest and Pass Due: 90 Days or More	457	428
Nonaccrual	3,812	7,303
Total Past Due and Nonaccrual	11,862	12,901
Current	795,987	759,852
Total	807,849	772,753
Commercial real estate [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	343	1,304
Accruing Interest and Past Due: 60-89 Days	889	161
Accruing Interest and Pass Due: 90 Days or More	167	63
Nonaccrual	1,266	2,544
Total Past Due and Nonaccrual	2,665	4,072
Current	282,042	271,548
Total	284,707	275,620
Commercial other [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	867	606
Accruing Interest and Past Due: 60-89 Days	32	0
Accruing Interest and Pass Due: 90 Days or More	0	40
Nonaccrual	239	2,294
Total Past Due and Nonaccrual	1,138	2,940
Current	103,128	92,945
Total	104,266	95,885
Total commercial [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	1,210	1,910
Accruing Interest and Past Due: 60-89 Days	921	161
Accruing Interest and Pass Due: 90 Days or More	167	103
Nonaccrual	1,505	4,838
Total Past Due and Nonaccrual	3,803	7,012
Current	385,170	364,493
Total	388,973	371,505
Agricultural real estate [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	642	0
Accruing Interest and Past Due: 60-89 Days	0	0
Accruing Interest and Pass Due: 90 Days or More	0	0
Nonaccrual	0	0
Total Past Due and Nonaccrual	642	0
Current	57,988	49,393
Total	58,630	49,393
Agricultural other [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	214	90
Accruing Interest and Past Due: 60-89 Days	450	0
Accruing Interest and Pass Due: 90 Days or More	0	0
Nonaccrual	262	169
Total Past Due and Nonaccrual	926	259
Current	33,371	33,954
Total	34,297	34,213
Total agricultural [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	856	90
Accruing Interest and Past Due: 60-89 Days	450	0
Accruing Interest and Pass Due: 90 Days or More	0	0
Nonaccrual	262	169
Total Past Due and Nonaccrual	1,568	259
Current	91,359	83,347
Total	92,927	83,606
Residential real estate senior liens [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	2,549	2,000
Accruing Interest and Past Due: 60-89 Days	898	346
Accruing Interest and Pass Due: 90 Days or More	290	320
Nonaccrual	1,957	2,064
Total Past Due and Nonaccrual	5,694	4,730
Current	232,710	223,532
Total	238,404	228,262
Residential real estate junior liens [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	166	232
Accruing Interest and Past Due: 60-89 Days	0	0
Accruing Interest and Pass Due: 90 Days or More	0	0
Nonaccrual	68	50
Total Past Due and Nonaccrual	234	282
Current	13,649	16,207
Total	13,883	16,489
Residential real estate home equity lines of credit [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	347	237
Accruing Interest and Past Due: 60-89 Days	64	0
Accruing Interest and Pass Due: 90 Days or More	0	0
Nonaccrual	0	182
Total Past Due and Nonaccrual	411	419
Current	39,127	38,978
Total	39,538	39,397
Total residential real estate [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	3,062	2,469
Accruing Interest and Past Due: 60-89 Days	962	346
Accruing Interest and Pass Due: 90 Days or More	290	320
Nonaccrual	2,025	2,296
Total Past Due and Nonaccrual	6,339	5,431
Current	285,486	278,717
Total	291,825	284,148
Consumer secured [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	115	127
Accruing Interest and Past Due: 60-89 Days	1	33
Accruing Interest and Pass Due: 90 Days or More	0	4
Nonaccrual	0	0
Total Past Due and Nonaccrual	116	164
Current	29,190	28,118
Total	29,306	28,282
Consumer unsecured [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	6	31
Accruing Interest and Past Due: 60-89 Days	10	3
Accruing Interest and Pass Due: 90 Days or More	0	1
Nonaccrual	20	0
Total Past Due and Nonaccrual	36	35
Current	4,782	5,177
Total	4,818	5,212
Total consumer [Member]	'	'
Credit quality indicators for residential real estate and consumer loans is the individual loan's past due aging	'	'
Accruing Interest and Past Due: 30-59 Days	121	158
Accruing Interest and Past Due: 60-89 Days	11	36
Accruing Interest and Pass Due: 90 Days or More	0	5
Nonaccrual	20	0
Total Past Due and Nonaccrual	152	199
Current	33,972	33,295
Total	$34,124	$33,494

Loans_and_Allowance_for_Loan_L6

Loans and Allowance for Loan Losses (Summary of information pertaining to impaired loans) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans with a valuation allowance, Outstanding Balance	$18,113	'	$18,113	'	$20,468
Impaired loans without a valuation allowance, Outstanding Balance	6,408	'	6,408	'	5,490
Impaired loans, Outstanding Balance	24,521	'	24,521	'	25,958
Impaired loans with a valuation allowance, Unpaid Principal Balance	19,569	'	19,569	'	21,977
Impaired loans without a valuation allowance, Unpaid Principal Balance	7,783	'	7,783	'	6,739
Impaired loans, Unpaid Principal Balance	27,352	'	27,352	'	28,716
Impaired loans with a valuation allowance, Valuation Allowance	4,001	'	4,001	'	3,937
Impaired loans, Valuation Allowance	4,001	'	4,001	'	3,937
Impaired loans with a valuation allowance, Average Outstanding Balance	18,570	17,431	19,362	17,235	'
Impaired loans without a valuation allowance, Average Outstanding Balance	6,189	9,542	5,856	9,976	'
Impaired loans, Average Outstanding Balance	24,759	26,973	25,218	27,211	'
Impaired loans with a valuation allowance, Interest Income Recognized	422	264	893	725	'
Impaired loans without a valuation allowance, Interest Income Recognized	224	129	452	391	'
Impaired loans, Interest Income Recognized	646	393	1,345	1,116	'
Commercial real estate [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans with a valuation allowance, Outstanding Balance	6,023	'	6,023	'	7,295
Impaired loans without a valuation allowance, Outstanding Balance	4,656	'	4,656	'	3,749
Impaired loans with a valuation allowance, Unpaid Principal Balance	6,161	'	6,161	'	7,536
Impaired loans without a valuation allowance, Unpaid Principal Balance	5,494	'	5,494	'	4,408
Impaired loans with a valuation allowance, Valuation Allowance	1,818	'	1,818	'	1,653
Impaired loans with a valuation allowance, Average Outstanding Balance	6,471	6,260	7,546	6,197	'
Impaired loans without a valuation allowance, Average Outstanding Balance	4,531	5,651	4,037	6,749	'
Impaired loans with a valuation allowance, Interest Income Recognized	157	106	378	287	'
Impaired loans without a valuation allowance, Interest Income Recognized	169	72	327	251	'
Commercial other [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans with a valuation allowance, Outstanding Balance	658	'	658	'	2,140
Impaired loans without a valuation allowance, Outstanding Balance	818	'	818	'	1,272
Impaired loans with a valuation allowance, Unpaid Principal Balance	658	'	658	'	2,140
Impaired loans without a valuation allowance, Unpaid Principal Balance	928	'	928	'	1,433
Impaired loans with a valuation allowance, Valuation Allowance	262	'	262	'	397
Impaired loans with a valuation allowance, Average Outstanding Balance	1,063	1,996	976	1,183	'
Impaired loans without a valuation allowance, Average Outstanding Balance	833	2,026	1,029	1,860	'
Impaired loans with a valuation allowance, Interest Income Recognized	29	67	67	95	'
Impaired loans without a valuation allowance, Interest Income Recognized	29	15	88	80	'
Agricultural real estate [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans with a valuation allowance, Outstanding Balance	90	'	90	'	91
Impaired loans without a valuation allowance, Outstanding Balance	329	'	329	'	0
Impaired loans with a valuation allowance, Unpaid Principal Balance	90	'	90	'	91
Impaired loans without a valuation allowance, Unpaid Principal Balance	329	'	329	'	0
Impaired loans with a valuation allowance, Valuation Allowance	31	'	31	'	32
Impaired loans with a valuation allowance, Average Outstanding Balance	91	0	91	0	'
Impaired loans without a valuation allowance, Average Outstanding Balance	231	179	144	214	'
Impaired loans with a valuation allowance, Interest Income Recognized	2	0	4	0	'
Impaired loans without a valuation allowance, Interest Income Recognized	15	0	19	0	'
Agricultural other [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans with a valuation allowance, Outstanding Balance	0	'	0	'	420
Impaired loans without a valuation allowance, Outstanding Balance	368	'	368	'	212
Impaired loans with a valuation allowance, Unpaid Principal Balance	0	'	0	'	420
Impaired loans without a valuation allowance, Unpaid Principal Balance	488	'	488	'	332
Impaired loans with a valuation allowance, Valuation Allowance	0	'	0	'	59
Impaired loans with a valuation allowance, Average Outstanding Balance	0	1,023	70	1,878	'
Impaired loans without a valuation allowance, Average Outstanding Balance	361	1,417	402	869	'
Impaired loans with a valuation allowance, Interest Income Recognized	0	0	0	73	'
Impaired loans without a valuation allowance, Interest Income Recognized	2	34	-2	41	'
Residential real estate senior liens [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans with a valuation allowance, Outstanding Balance	11,254	'	11,254	'	10,450
Impaired loans with a valuation allowance, Unpaid Principal Balance	12,525	'	12,525	'	11,672
Impaired loans with a valuation allowance, Valuation Allowance	1,873	'	1,873	'	1,783
Impaired loans with a valuation allowance, Average Outstanding Balance	10,865	7,994	10,595	7,803	'
Impaired loans with a valuation allowance, Interest Income Recognized	230	88	439	263	'
Residential real estate junior liens [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans with a valuation allowance, Outstanding Balance	88	'	88	'	72
Impaired loans with a valuation allowance, Unpaid Principal Balance	135	'	135	'	118
Impaired loans with a valuation allowance, Valuation Allowance	17	'	17	'	13
Impaired loans with a valuation allowance, Average Outstanding Balance	80	158	84	174	'
Impaired loans with a valuation allowance, Interest Income Recognized	4	3	5	7	'
Home equity lines of credit [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans without a valuation allowance, Outstanding Balance	172	'	172	'	182
Impaired loans without a valuation allowance, Unpaid Principal Balance	472	'	472	'	482
Impaired loans without a valuation allowance, Average Outstanding Balance	173	188	178	194	'
Impaired loans without a valuation allowance, Interest Income Recognized	8	6	17	14	'
Consumer secured [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans without a valuation allowance, Outstanding Balance	65	'	65	'	75
Impaired loans without a valuation allowance, Unpaid Principal Balance	72	'	72	'	84
Impaired loans without a valuation allowance, Average Outstanding Balance	60	81	66	90	'
Impaired loans without a valuation allowance, Interest Income Recognized	1	2	3	5	'
Commercial [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans, Outstanding Balance	12,155	'	12,155	'	14,456
Impaired loans, Unpaid Principal Balance	13,241	'	13,241	'	15,517
Impaired loans, Valuation Allowance	2,080	'	2,080	'	2,050
Impaired loans, Average Outstanding Balance	12,898	15,933	13,588	15,989	'
Impaired loans, Interest Income Recognized	384	260	860	713	'
Agricultural [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans, Outstanding Balance	787	'	787	'	723
Impaired loans, Unpaid Principal Balance	907	'	907	'	843
Impaired loans, Valuation Allowance	31	'	31	'	91
Impaired loans, Average Outstanding Balance	683	2,619	707	2,961	'
Impaired loans, Interest Income Recognized	19	34	21	114	'
Residential Real Estate [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans, Outstanding Balance	11,514	'	11,514	'	10,704
Impaired loans, Unpaid Principal Balance	13,132	'	13,132	'	12,272
Impaired loans, Valuation Allowance	1,890	'	1,890	'	1,796
Impaired loans, Average Outstanding Balance	11,118	8,340	10,857	8,171	'
Impaired loans, Interest Income Recognized	242	97	461	284	'
Consumer [Member]	'	'	'	'	'
Information pertaining to impaired loans	'	'	'	'	'
Impaired loans, Outstanding Balance	65	'	65	'	75
Impaired loans, Unpaid Principal Balance	72	'	72	'	84
Impaired loans, Valuation Allowance	0	'	0	'	0
Impaired loans, Average Outstanding Balance	60	81	66	90	'
Impaired loans, Interest Income Recognized	$1	$2	$3	$5	'

Loans_and_Allowance_for_Loan_L7

Loans and Allowance for Loan Losses (Summary of information pertaining to TDRs) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
	NumberofLoan	NumberofLoan	NumberofLoan	NumberofLoan
Information pertaining to TDR's	'	'	'	'
Number of Loans	22	2	45	46
Pre- Modification Recorded Investment	$1,587	$200	$6,310	$7,057
Post- Modification Recorded Investment	1,587	200	6,097	7,057
Below Market Interest Rate [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	15	1	26	35
Pre- Modification Recorded Investment	1,297	178	3,413	5,809
Below Market Interest Rate and Extension of Amortization Period [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	7	1	19	11
Pre- Modification Recorded Investment	290	22	2,897	1,248
Commercial other [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	3	1	10	27
Pre- Modification Recorded Investment	159	178	3,313	5,069
Post- Modification Recorded Investment	159	178	3,116	5,069
Commercial other [Member] | Below Market Interest Rate [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	3	1	6	25
Pre- Modification Recorded Investment	159	178	1,517	4,924
Commercial other [Member] | Below Market Interest Rate and Extension of Amortization Period [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	0	0	4	2
Pre- Modification Recorded Investment	0	0	1,796	145
Agricultural other [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	1	0	2	6
Pre- Modification Recorded Investment	198	0	332	561
Post- Modification Recorded Investment	198	0	332	561
Agricultural other [Member] | Below Market Interest Rate [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	1	0	2	6
Pre- Modification Recorded Investment	198	0	332	561
Agricultural other [Member] | Below Market Interest Rate and Extension of Amortization Period [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	0	0	0	0
Pre- Modification Recorded Investment	0	0	0	0
Residential real estate senior liens [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	15	0	30	12
Pre- Modification Recorded Investment	1,176	0	2,611	1,405
Post- Modification Recorded Investment	1,176	0	2,595	1,405
Residential real estate senior liens [Member] | Below Market Interest Rate [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	10	0	17	4
Pre- Modification Recorded Investment	924	0	1,548	324
Residential real estate senior liens [Member] | Below Market Interest Rate and Extension of Amortization Period [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	5	0	13	8
Pre- Modification Recorded Investment	252	0	1,063	1,081
Residential real estate junior liens [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	1	1	1	1
Pre- Modification Recorded Investment	20	22	20	22
Post- Modification Recorded Investment	20	22	20	22
Residential real estate junior liens [Member] | Below Market Interest Rate [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	0	0	0	0
Pre- Modification Recorded Investment	0	0	0	0
Residential real estate junior liens [Member] | Below Market Interest Rate and Extension of Amortization Period [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	1	1	1	1
Pre- Modification Recorded Investment	20	22	20	22
Consumer Unsecured [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	2	'	2	'
Pre- Modification Recorded Investment	34	'	34	'
Post- Modification Recorded Investment	34	'	34	'
Consumer Unsecured [Member] | Below Market Interest Rate [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	1	'	1	'
Pre- Modification Recorded Investment	16	'	16	'
Consumer Unsecured [Member] | Below Market Interest Rate and Extension of Amortization Period [Member]	'	'	'	'
Information pertaining to TDR's	'	'	'	'
Number of Loans	1	'	1	'
Pre- Modification Recorded Investment	$18	'	$18	'

Loans_and_Allowance_for_Loan_L8

Loans and Allowance for Loan Losses (Summary of loans that defaulted) (Details) (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2012
	NumberofLoan	NumberofLoan
Summary of defaulted loans	'	'
Number of Loans	3	5
Pre-Default Recorded Investment	$58	$187
Charge- Off Recorded Upon Default	33	117
Post-Default Recorded Investment	25	70
Commercial other [Member]	'	'
Summary of defaulted loans	'	'
Number of Loans	2	3
Pre-Default Recorded Investment	50	132
Charge- Off Recorded Upon Default	25	66
Post-Default Recorded Investment	25	66
Residential real estate senior liens [Member]	'	'
Summary of defaulted loans	'	'
Number of Loans	0	1
Pre-Default Recorded Investment	0	47
Charge- Off Recorded Upon Default	0	43
Post-Default Recorded Investment	0	4
Consumer secured [Member]	'	'
Summary of defaulted loans	'	'
Number of Loans	1	1
Pre-Default Recorded Investment	8	8
Charge- Off Recorded Upon Default	8	8
Post-Default Recorded Investment	$0	$0

Loans_and_Allowance_for_Loan_L9

Loans and Allowance for Loan Losses (Summary of TDR loan balances) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Summary of TDR loan balances	'	'
Troubled debt restructurings	$20,337	$19,355

Recovered_Sheet1

Loans and Allowance for Loan Losses (Narrative) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
	NumberofLoan	NumberofLoan
Loans and Allowance for Loan Losses (Textual) [Abstract]	'	'	'
Amortized periods	'6 years	'	'
Loans and Allowance for Loan Losses (Additional Textual) [Abstract]	'	'	'
Number of days past due (or more), accrual of interest discontinued	'90 days	'	'
Maximum days of consumer loan charged off	'180 days	'	'
Consumer loans sold to secondary market	$0	'	'
Migration analysis of loan portfolio period	'5 years	'	'
Advance in connection with impaired loans	88	'	9
Number of loans restructured through the forbearance of principal or accrued interest	0	0	'
Installment period	'12 months	'	'
Maximum [Member]	'	'	'
Loans and Allowance for Loan Losses (Textual) [Abstract]	'	'	'
Amortized periods	'30 years	'	'
Repayment delinquent period	'30 days	'	'
Loans delinquent and overdraft period	'60 days	'	'
Minimum [Member]	'	'	'
Loans and Allowance for Loan Losses (Textual) [Abstract]	'	'	'
Repayment delinquent period	'10 days	'	'
Loans delinquent and overdraft period	'30 days	'	'
Residential Real Estate [Member]	'	'	'
Loans and Allowance for Loan Losses (Textual) [Abstract]	'	'	'
Maximum percentage of loan	95.00%	'	'
Maximum percentage of private mortgage insurance required	80.00%	'	'
Maximum percentage of principal, interest, taxes and hazard insurance on property over gross income	28.00%	'	'
Maximum percentage of debt servicing over gross income	36.00%	'	'
Maximum amount without corporation approval	400	'	'
Residential Real Estate [Member] | Maximum [Member]	'	'	'
Loans and Allowance for Loan Losses (Textual) [Abstract]	'	'	'
Amortized periods	'15 years	'	'
Residential Real Estate [Member] | Minimum [Member]	'	'	'
Loans and Allowance for Loan Losses (Textual) [Abstract]	'	'	'
Amortized periods	'15 years	'	'
Commercial and agricultural real estate [Member]	'	'	'
Loans and Allowance for Loan Losses (Textual) [Abstract]	'	'	'
Maximum amount of loans	$12,500	'	'
Maximum percentage of loan	80.00%	'	'

Equity_Securities_Without_Read2

Equity Securities Without Readily Determinable Fair Values (Equity securities without readily determinable fair values) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of equity securities without fair values	'	'
FRB Stock	$1,879	$1,879
Other	344	349
Total	18,353	18,118
Investment in Federal Home Loan Bank Stock [Member]	'	'
Schedule of equity securities without fair values	'	'
FHLB Stock	8,100	7,850
Investment in Corporate Settlement Solutions [Member]	'	'
Schedule of equity securities without fair values	'	'
Equity method investments	7,030	7,040
Investment in Valley Financial Corporation [Member]	'	'
Schedule of equity securities without fair values	'	'
Equity method investments	$1,000	$1,000

Borrowed_Funds_Borrowed_funds_

Borrowed Funds (Borrowed funds obligations) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Debt, Long-term and Short-term, Combined Amount	$266,001	$241,001
Debt, Weighted Average Interest Rate	1.51%	1.59%
Federal Home Loan Bank Advances [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt, Long-term and Short-term, Combined Amount	162,000	152,000
Debt, Weighted Average Interest Rate	2.02%	2.05%
Securities sold under agreements to repurchase [Member] | Without stated maturity dates [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt, Long-term and Short-term, Combined Amount	81,405	66,147
Debt, Weighted Average Interest Rate	0.15%	0.15%
Securities sold under agreements to repurchase [Member] | With stated maturity dates [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt, Long-term and Short-term, Combined Amount	16,296	16,284
Debt, Weighted Average Interest Rate	3.57%	3.57%
Federal Funds Purchased [Member]	'	'
Debt Instrument [Line Items]	'	'
Debt, Long-term and Short-term, Combined Amount	$6,300	$6,570
Debt, Weighted Average Interest Rate	0.50%	0.50%

Borrowed_Funds_Maturity_and_we

Borrowed Funds (Maturity and weighted average interest rates of FHLB advances) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Schedule of maturity and weighted average interest rates of FHLB advances	'	'
Fixed rate advances due 2014, Amount	$10,000	$10,000
Fixed rate advances due 2014, Rate	0.48%	0.48%
Fixed rate advances due 2015, Amount	32,000	42,000
Fixed rate advances due 2015, Rate	0.84%	1.12%
Fixed rate advances due 2016, Amount	10,000	10,000
Fixed rate advances due 2016, Rate	2.15%	2.15%
Fixed rate advances due 2017, Amount	30,000	40,000
Fixed rate advances due 2017, Rate	1.95%	2.15%
Fixed rate advances due 2018, Amount	40,000	20,000
Fixed rate advances due 2018, Rate	2.35%	2.86%
Fixed rate advances due 2019, Amount	20,000	20,000
Fixed rate advances due 2019, Rate	3.11%	3.73%
Fixed rate advances due 2020, Amount	10,000	10,000
Fixed rate advances due 2020, Rate	1.98%	1.98%
Fixed rate advances due 2023, Amount	10,000	0
Fixed rate advances due 2023, Rate	3.90%	0.00%
Total, Amount	$162,000	$152,000
Total, Rate	2.02%	2.05%

Borrowed_Funds_Shortterm_borro

Borrowed Funds (Short-term borrowings) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Securities sold under agreements to repurchase without stated maturity dates [Member]	'	'	'	'
Summary of short term borrowings	'	'	'	'
Maximum Month End Balance	$81,405	$58,471	$81,405	$58,584
Quarter to Date Average Balance	78,148	57,983	69,224	55,721
Weighted Average Interest Rate During the Period	0.15%	0.20%	0.15%	0.20%
Federal funds purchased [Member]	'	'	'	'
Summary of short term borrowings	'	'	'	'
Maximum Month End Balance	6,300	15,000	13,700	17,900
Quarter to Date Average Balance	$5,052	$5,848	$4,133	$4,327
Weighted Average Interest Rate During the Period	0.62%	0.46%	0.57%	0.41%

Borrowed_Funds_Pledged_certifi

Borrowed Funds (Pledged certificates of deposit) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Summary of pledged certificates of deposit	'	'
Pledged to secure borrowed funds	$304,224	$308,628
Pledged to secure repurchase agreements	139,082	143,322
Pledged for public deposits and for other purposes necessary or required by law	21,595	22,955
Total	$464,901	$474,905

Borrowed_Funds_Narrative_Detai

Borrowed Funds (Narrative) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2013
					Without stated maturity dates [Member]	Without stated maturity dates [Member]
					Maximum [Member]	Minimum [Member]
Borrowed Funds (Textual) [Abstract]	'	'	'	'	'	'
Maturity of securities sold under agreements to repurchase without stated maturity dates	'	'	'	'	'4 days	'1 day
Borrowed Funds (Additional Textual) [Abstract]	'	'	'	'	'	'
Additional borrowing capacity	'	'	$84,966	'	'	'
Advances From Federal Home Loan Bank	30,000	60,000	'	'	'	'
Fair value of securities sold under agreements to repurchase	'	'	139,082	143,322	'	'
Investment securities restricted to be pledged	'	'	$0	$0	'	'

Other_Noninterest_Expenses_Exp

Other Noninterest Expenses (Expenses included in other noninterest expenses) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Summary of expenses included in other noninterest expenses	'	'	'	'
Marketing and community relations	$271	$610	$945	$1,639
FDIC insurance premiums	267	218	812	646
Directors fees	203	235	607	654
Audit and related fees	189	179	490	509
Education and travel	110	112	348	378
Loan Underwriting Fees	97	89	336	272
Postage and freight	103	105	296	300
Printing and supplies	106	91	291	310
Legal fees	87	50	267	193
Consulting fees	68	92	223	350
Other	500	455	1,533	1,431
Total other	$2,001	$2,236	$6,148	$6,682

Federal_Income_Taxes_Reconcili

Federal Income Taxes (Reconciliation of the provision for federal income taxes) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Summary of federal income tax expense	'	'	'	'
Income taxes at 34% statutory rate	$1,347	$1,481	$3,903	$4,093
Effect of nontaxable income	'	'	'	'
Interest income on tax exempt municipal securities	-411	-391	-1,212	-1,170
Earnings on corporate owned life insurance policies	-63	-58	-185	-176
Other	-217	-147	-667	-439
Total effect of nontaxable income	-691	-596	-2,064	-1,785
Effect of nondeductible expenses	18	14	54	36
Federal income tax expense	$674	$899	$1,893	$2,344

Federal_Income_Taxes_Summary_o

Federal Income Taxes (Summary of OCI) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Summary of other comprehensive income (loss)	'		'		'		'
Unrealized gains (losses) arising during the period	$665		$2,990		($13,293)		$5,209
Reclassification adjustment for net realized (gains) losses included in net income	-72		-116		-171		-1,119
Reclassification adjustment for impairment loss included in net income	0		0		0		282
Net unrealized gains (losses)	593		2,874		-13,464		4,372
Tax effect	-447	[1]	-763	[1]	4,455	[1]	-790	[1]
Unrealized gains (losses), net of tax	146		2,111		-9,009		3,582
Auction Rate Money Market Preferred and Preferred Stocks [Member]	'		'		'		'
Summary of other comprehensive income (loss)	'		'		'		'
Unrealized gains (losses) arising during the period	-653		630		-358		2,049
Reclassification adjustment for net realized (gains) losses included in net income	0		0		0		0
Reclassification adjustment for impairment loss included in net income	0		0		0		0
Net unrealized gains (losses)	-653		630		-358		2,049
Tax effect	0		0		0		0
Unrealized gains (losses), net of tax	-653		630		-358		2,049
All Other AFS Securities [Member]	'		'		'		'
Summary of other comprehensive income (loss)	'		'		'		'
Unrealized gains (losses) arising during the period	1,318		2,360		-12,935		3,160
Reclassification adjustment for net realized (gains) losses included in net income	-72		-116		-171		-1,119
Reclassification adjustment for impairment loss included in net income	0		0		0		282
Net unrealized gains (losses)	1,246		2,244		-13,106		2,323
Tax effect	-447		-763		4,455		-790
Unrealized gains (losses), net of tax	$799		$1,481		($8,651)		$1,533
[1]	See “Note 13 – Accumulated Other Comprehensive Income (Loss)” for tax effect reconciliation.

Federal_Income_Taxes_Narrative

Federal Income Taxes (Narrative) (Details)	9 Months Ended
	Sep. 30, 2013
Federal Income Taxes (Textual) [Abstract]	'
Federal statutory tax rate	34.00%

Defined_Benefit_Pension_Plan_C

Defined Benefit Pension Plan (Components of net periodic benefit cost) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Components of net periodic benefit cost	'	'	'	'
Interest cost on PBO	$113	$118	$338	$353
Expected return on plan assets	-143	-127	-430	-381
Amortization of unrecognized actuarial net loss	83	73	248	219
Net periodic benefit cost	$53	$64	$156	$191

Defined_Benefit_Pension_Plan_N

Defined Benefit Pension Plan (Narrative) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Defined Benefit Pension Plan (Textual) [Abstract]	'	'
Defined benefit pension plan, effective curtailment date	1-Mar-07	'
Contribution to the pension plan by corporation	$215	$709

Fair_Value_Quantitative_inform

Fair Value (Quantitative information about impaired loans) (Details) (Impaired Loans [Member], Level 3 [Member], USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Discounted cash flow [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Discounted cash flow fair value	$9,452	$8,726
Valuation Techniques	'Discounted cash flow	'Discounted cash flow
Discounted cash flow [Member] | Maximum [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Duration of cash flows	'120 months	'120 months
Discounted cash flow [Member] | Maximum [Member] | Reduction in interest rate from original loan terms [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Fair Value Inputs, Discount Rate	6.38%	6.25%
Discounted cash flow [Member] | Minimum [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Duration of cash flows	'5 months	'14 months
Discounted cash flow [Member] | Minimum [Member] | Reduction in interest rate from original loan terms [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Fair Value Inputs, Discount Rate	5.00%	5.00%
Discounted appraisal value [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Discounted appraisal value at fair value	$11,068	$13,295
Discounted appraisal value [Member] | Equipment [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Fair Value Inputs, Discount Rate	50.00%	50.00%
Discounted appraisal value [Member] | Livestock [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Fair Value Inputs, Discount Rate	50.00%	50.00%
Discounted appraisal value [Member] | Cash crop inventory [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Fair Value Inputs, Discount Rate	50.00%	50.00%
Discounted appraisal value [Member] | Other inventory [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Fair Value Inputs, Discount Rate	75.00%	75.00%
Discounted appraisal value [Member] | Accounts receivable [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Fair Value Inputs, Discount Rate	75.00%	75.00%
Discounted appraisal value [Member] | Maximum [Member] | Real Estate [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Fair Value Inputs, Discount Rate	30.00%	30.00%
Discounted appraisal value [Member] | Minimum [Member] | Real Estate [Member]	'	'
Quantitative information about impaired loans measured utilizing Level 3 fair value measurement	'	'
Fair Value Inputs, Discount Rate	20.00%	20.00%

Fair_Value_Quantitative_inform1

Fair Value (Quantitative information related to foreclosed assets) (Details) (Discounted appraisal value [Member], Foreclosed Assets [Member], Level 3 [Member], USD $)	9 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Quantitative information related to foreclosed assets measured utilizing Level 3 fair value measurements	'	'
Discounted appraisal value at fair value	$1,186	$2,018
Valuation Techniques	'Discounted appraisal value	'Discounted appraisal value
Maximum [Member] | Real Estate [Member]	'	'
Quantitative information related to foreclosed assets measured utilizing Level 3 fair value measurements	'	'
Fair Value Inputs, Discount Rate	30.00%	30.00%
Minimum [Member] | Real Estate [Member]	'	'
Quantitative information related to foreclosed assets measured utilizing Level 3 fair value measurements	'	'
Fair Value Inputs, Discount Rate	20.00%	20.00%

Fair_Value_Carrying_amount_and

Fair Value (Carrying amount and estimated fair value of financial instruments) (Details) (USD $)	Sep. 30, 2013		Jun. 30, 2013	Dec. 31, 2012		Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
ASSETS	'		'	'		'	'	'
Cash and cash equivalents	$20,255		'	$22,634		'	'	'
Certificates of deposit held in other financial institutions	2,045		'	4,465		'	'	'
Mortgage loans AFS	712		'	3,633		'	'	'
Total loans	807,849		'	772,753		'	'	'
Less allowance for loan losses	-11,600		-11,700	-11,936		-12,062	-12,318	-12,375
Net loans	796,249		'	760,817		'	'	'
Accrued interest receivable	6,584		'	5,227		'	'	'
Equity securities without readily determinable fair values	18,353		'	18,118		'	'	'
LIABILITIES	'		'	'		'	'	'
Borrowed funds	266,001		'	241,001		'	'	'
Accrued interest payable	8,104		'	7,482		'	'	'
Carrying Value [Member]	'		'	'		'	'	'
ASSETS	'		'	'		'	'	'
Cash and cash equivalents	21,604		'	24,920		'	'	'
Certificates of deposit held in other financial institutions	2,045		'	4,465		'	'	'
Mortgage loans AFS	712		'	3,633		'	'	'
Total loans	807,849		'	772,753		'	'	'
Less allowance for loan losses	-11,600		'	-11,936		'	'	'
Net loans	796,249		'	760,817		'	'	'
Accrued interest receivable	6,584		'	5,227		'	'	'
Equity securities without readily determinable fair values	18,353	[1]	'	18,118	[1]	'	'	'
Originated mortgage servicing rights	2,659		'	2,285		'	'	'
LIABILITIES	'		'	'		'	'	'
Deposits without stated maturities	574,860		'	553,332		'	'	'
Deposits with stated maturities	449,071		'	464,335		'	'	'
Borrowed funds	266,001		'	241,001		'	'	'
Accrued interest payable	713		'	751		'	'	'
Estimated Fair Value [Member]	'		'	'		'	'	'
ASSETS	'		'	'		'	'	'
Cash and cash equivalents	21,604		'	24,920		'	'	'
Certificates of deposit held in other financial institutions	2,048		'	4,475		'	'	'
Mortgage loans AFS	722		'	3,680		'	'	'
Total loans	808,884		'	784,964		'	'	'
Less allowance for loan losses	-11,600		'	-11,936		'	'	'
Net loans	797,284		'	773,028		'	'	'
Accrued interest receivable	6,584		'	5,227		'	'	'
Equity securities without readily determinable fair values	18,353	[1]	'	18,118	[1]	'	'	'
Originated mortgage servicing rights	2,732		'	2,285		'	'	'
LIABILITIES	'		'	'		'	'	'
Deposits without stated maturities	574,860		'	553,332		'	'	'
Deposits with stated maturities	451,336		'	472,630		'	'	'
Borrowed funds	268,637		'	248,822		'	'	'
Accrued interest payable	713		'	751		'	'	'
Level 1 [Member]	'		'	'		'	'	'
ASSETS	'		'	'		'	'	'
Cash and cash equivalents	21,604		'	24,920		'	'	'
Certificates of deposit held in other financial institutions	0		'	0		'	'	'
Mortgage loans AFS	0		'	0		'	'	'
Total loans	0		'	0		'	'	'
Less allowance for loan losses	0		'	0		'	'	'
Net loans	0		'	0		'	'	'
Accrued interest receivable	6,584		'	5,227		'	'	'
Equity securities without readily determinable fair values	0	[1]	'	0	[1]	'	'	'
Originated mortgage servicing rights	0		'	0		'	'	'
LIABILITIES	'		'	'		'	'	'
Deposits without stated maturities	574,860		'	553,332		'	'	'
Deposits with stated maturities	0		'	0		'	'	'
Borrowed funds	0		'	0		'	'	'
Accrued interest payable	713		'	751		'	'	'
Level 2 [Member]	'		'	'		'	'	'
ASSETS	'		'	'		'	'	'
Cash and cash equivalents	0		'	0		'	'	'
Certificates of deposit held in other financial institutions	2,048		'	4,475		'	'	'
Mortgage loans AFS	722		'	3,680		'	'	'
Total loans	0		'	0		'	'	'
Less allowance for loan losses	0		'	0		'	'	'
Net loans	0		'	0		'	'	'
Accrued interest receivable	0		'	0		'	'	'
Equity securities without readily determinable fair values	0	[1]	'	0	[1]	'	'	'
Originated mortgage servicing rights	2,732		'	2,285		'	'	'
LIABILITIES	'		'	'		'	'	'
Deposits without stated maturities	0		'	0		'	'	'
Deposits with stated maturities	451,336		'	472,630		'	'	'
Borrowed funds	268,637		'	248,822		'	'	'
Accrued interest payable	0		'	0		'	'	'
Level 3 [Member]	'		'	'		'	'	'
ASSETS	'		'	'		'	'	'
Cash and cash equivalents	0		'	0		'	'	'
Certificates of deposit held in other financial institutions	0		'	0		'	'	'
Mortgage loans AFS	0		'	0		'	'	'
Total loans	808,884		'	784,964		'	'	'
Less allowance for loan losses	-11,600		'	-11,936		'	'	'
Net loans	797,284		'	773,028		'	'	'
Accrued interest receivable	0		'	0		'	'	'
Equity securities without readily determinable fair values	0	[1]	'	0	[1]	'	'	'
Originated mortgage servicing rights	0		'	0		'	'	'
LIABILITIES	'		'	'		'	'	'
Deposits without stated maturities	0		'	0		'	'	'
Deposits with stated maturities	0		'	0		'	'	'
Borrowed funds	0		'	0		'	'	'
Accrued interest payable	$0		'	$0		'	'	'
[1]	Due to the characteristics of equity securities without readily determinable fair values, they are not disclosed under a specific fair value hierarchy. If we were to record an impairment adjustment related to these securities, such amount would be classified as a nonrecurring Level 3 fair value adjustment.

Fair_Value_Recorded_amount_of_

Fair Value (Recorded amount of assets and liabilities measured at fair value) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
AFS Securities	'	'
Securities available for sale	$501,057	$504,010
Fair value, total	523,508	529,622
Level 1 [Member]	'	'
AFS Securities	'	'
Fair value, total	6,144	6,363
Percent of assets and liabilities measured at fair value	1.17%	1.20%
Level 2 [Member]	'	'
AFS Securities	'	'
Fair value, total	495,658	499,220
Percent of assets and liabilities measured at fair value	94.68%	94.26%
Level 3 [Member]	'	'
AFS Securities	'	'
Fair value, total	21,706	24,039
Percent of assets and liabilities measured at fair value	4.15%	4.54%
Recurring items [Member]	'	'
Trading securities	'	'
Trading securities States and political subdivisions	745	1,573
AFS Securities	'	'
Securities available for sale	501,057	504,010
Recurring items [Member] | Government sponsored enterprises [Member]	'	'
AFS Securities	'	'
Securities available for sale	24,155	25,776
Recurring items [Member] | States and political subdivisions [Member]	'	'
AFS Securities	'	'
Securities available for sale	193,786	182,743
Recurring items [Member] | Auction rate money market preferred [Member]	'	'
AFS Securities	'	'
Securities available for sale	2,639	2,778
Recurring items [Member] | Preferred stock [Member]	'	'
AFS Securities	'	'
Securities available for sale	6,144	6,363
Recurring items [Member] | Mortgage-backed [Member]	'	'
AFS Securities	'	'
Securities available for sale	146,393	155,345
Recurring items [Member] | Collateralized mortgage obligations [Member]	'	'
AFS Securities	'	'
Securities available for sale	127,940	131,005
Recurring items [Member] | Level 1 [Member]	'	'
Trading securities	'	'
Trading securities States and political subdivisions	0	0
AFS Securities	'	'
Securities available for sale	6,144	6,363
Recurring items [Member] | Level 1 [Member] | Government sponsored enterprises [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 1 [Member] | States and political subdivisions [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 1 [Member] | Auction rate money market preferred [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 1 [Member] | Preferred stock [Member]	'	'
AFS Securities	'	'
Securities available for sale	6,144	6,363
Recurring items [Member] | Level 1 [Member] | Mortgage-backed [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 1 [Member] | Collateralized mortgage obligations [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 2 [Member]	'	'
Trading securities	'	'
Trading securities States and political subdivisions	745	1,573
AFS Securities	'	'
Securities available for sale	494,913	497,647
Recurring items [Member] | Level 2 [Member] | Government sponsored enterprises [Member]	'	'
AFS Securities	'	'
Securities available for sale	24,155	25,776
Recurring items [Member] | Level 2 [Member] | States and political subdivisions [Member]	'	'
AFS Securities	'	'
Securities available for sale	193,786	182,743
Recurring items [Member] | Level 2 [Member] | Auction rate money market preferred [Member]	'	'
AFS Securities	'	'
Securities available for sale	2,639	2,778
Recurring items [Member] | Level 2 [Member] | Preferred stock [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 2 [Member] | Mortgage-backed [Member]	'	'
AFS Securities	'	'
Securities available for sale	146,393	155,345
Recurring items [Member] | Level 2 [Member] | Collateralized mortgage obligations [Member]	'	'
AFS Securities	'	'
Securities available for sale	127,940	131,005
Recurring items [Member] | Level 3 [Member]	'	'
Trading securities	'	'
Trading securities States and political subdivisions	0	0
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 3 [Member] | Government sponsored enterprises [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 3 [Member] | States and political subdivisions [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 3 [Member] | Auction rate money market preferred [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 3 [Member] | Preferred stock [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 3 [Member] | Mortgage-backed [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Recurring items [Member] | Level 3 [Member] | Collateralized mortgage obligations [Member]	'	'
AFS Securities	'	'
Securities available for sale	0	0
Nonrecurring items [Member]	'	'
AFS Securities	'	'
Impaired loans (net of the allowance for loan losses)	20,520	22,021
Foreclosed assets	1,186	2,018
Nonrecurring items [Member] | Level 1 [Member]	'	'
AFS Securities	'	'
Impaired loans (net of the allowance for loan losses)	0	0
Foreclosed assets	0	0
Nonrecurring items [Member] | Level 2 [Member]	'	'
AFS Securities	'	'
Impaired loans (net of the allowance for loan losses)	0	0
Foreclosed assets	0	0
Nonrecurring items [Member] | Level 3 [Member]	'	'
AFS Securities	'	'
Impaired loans (net of the allowance for loan losses)	20,520	22,021
Foreclosed assets	$1,186	$2,018

Fair_Value_Changes_in_fair_val

Fair Value (Changes in fair value of assets and liabilities) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Changes in fair value of assets and liabilities recorded at fair value	'	'	'	'
Trading securities	'	'	$23	$41
Total	-44	-9	-154	-25
Recurring items [Member]	'	'	'	'
Changes in fair value of assets and liabilities recorded at fair value	'	'	'	'
Trading securities	-5	-9	-23	-41
Borrowed funds	0	0	0	33
Nonrecurring items [Member]	'	'	'	'
Changes in fair value of assets and liabilities recorded at fair value	'	'	'	'
Foreclosed assets	-39	0	-131	-17
Trading Losses [Member]	'	'	'	'
Changes in fair value of assets and liabilities recorded at fair value	'	'	'	'
Total	-5	-9	-23	-41
Trading Losses [Member] | Recurring items [Member]	'	'	'	'
Changes in fair value of assets and liabilities recorded at fair value	'	'	'	'
Trading securities	-5	-9	-23	-41
Borrowed funds	0	0	0	0
Trading Losses [Member] | Nonrecurring items [Member]	'	'	'	'
Changes in fair value of assets and liabilities recorded at fair value	'	'	'	'
Foreclosed assets	0	0	0	0
Other Gains and (Losses) [Member]	'	'	'	'
Changes in fair value of assets and liabilities recorded at fair value	'	'	'	'
Total	-39	0	-131	16
Other Gains and (Losses) [Member] | Recurring items [Member]	'	'	'	'
Changes in fair value of assets and liabilities recorded at fair value	'	'	'	'
Trading securities	0	0	0	0
Borrowed funds	0	0	0	33
Other Gains and (Losses) [Member] | Nonrecurring items [Member]	'	'	'	'
Changes in fair value of assets and liabilities recorded at fair value	'	'	'	'
Foreclosed assets	($39)	$0	($131)	($17)

Fair_Value_Narrative_Details_T

Fair Value (Narrative) (Details Textual) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Fair Value (Additional Textual) [Abstract]	'	'
Maturity dates of Interest bearing balances	'3 years	'
Maturity dates of borrowed funds	'90 days	'
Level 3 [Member]	'	'
Fair Value (Textual) [Abstract]	'	'
Impairments recorded on equity securities without readily determinable fair values	$0	$0
Impairments recorded on goodwill and other acquisition intangibles	$0	$0

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Changes in AOCI by component) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	($4,148)	$3,960	$5,007	$2,489
OCI before reclassifications	665	2,990	-13,293	5,209
Amounts reclassified from AOCI	-72	-116	-171	-837
Subtotal	593	2,874	-13,464	4,372
Tax effect	-447	-763	4,455	-790
Other comprehensive income (loss)	146	2,111	-9,009	3,582
Accumulated Other Comprehensive Income (Loss), Net of Tax	-4,002	6,071	-4,002	6,071
Unrealized Holding Gains (Losses) on AFS Securities [Member]	'	'	'	'
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-477	7,413	8,678	5,942
OCI before reclassifications	665	2,990	-13,293	5,209
Amounts reclassified from AOCI	-72	-116	-171	-837
Subtotal	593	2,874	-13,464	4,372
Tax effect	-447	-763	4,455	-790
Other comprehensive income (loss)	146	2,111	-9,009	3,582
Accumulated Other Comprehensive Income (Loss), Net of Tax	-331	9,524	-331	9,524
Defined Benefit Pension Plan [Member]	'	'	'	'
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]	'	'	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax	-3,671	-3,453	-3,671	-3,453
OCI before reclassifications	0	0	0	0
Amounts reclassified from AOCI	0	0	0	0
Subtotal	0	0	0	0
Tax effect	0	0	0	0
Other comprehensive income (loss)	0	0	0	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	($3,671)	($3,453)	($3,671)	($3,453)

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income (Reclassification adjustments) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reclassification out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Gain (loss) on sale of AFS securities	$72	$116	$171	$1,119
Net AFS impairment loss	0	0	0	-282
Income before federal income tax expense	3,960	4,356	11,479	12,039
Federal income tax expense	674	899	1,893	2,344
NET INCOME	3,286	3,457	9,586	9,695
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Holding Gains (Losses) on AFS Securities [Member]	'	'	'	'
Reclassification out of Accumulated Other Comprehensive Income [Line Items]	'	'	'	'
Gain (loss) on sale of AFS securities	72	116	171	1,119
Net AFS impairment loss	0	0	0	-282
Income before federal income tax expense	72	116	171	837
Federal income tax expense	24	39	58	285
NET INCOME	$48	$77	$113	$552

Accumulated_Other_Comprehensiv4

Accumulated Other Comprehensive Income (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Deferred Federal Income Taxes Related to Unrealized Holding Gain or Loss Expected	$0

Parent_Company_Only_Financial_2

Parent Company Only Financial Information (Interim Condensed Balance Sheets) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
ASSETS	'	'	'	'
Securities available for sale	$501,057	$504,010	'	'
Premises and equipment	26,018	25,787	'	'
Other assets	15,400	12,784	'	'
TOTAL ASSETS	1,459,341	1,430,639	'	'
LIABILITIES AND SHAREHOLDERS' EQUITY	'	'	'	'
Shareholders' equity	161,305	164,489	164,147	154,783
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	1,459,341	1,430,639	'	'
Parent Company [Member]	'	'	'	'
ASSETS	'	'	'	'
Cash on deposit at subsidiary Bank	418	332	'	'
Securities available for sale	3,527	3,939	'	'
Investments in subsidiaries	113,002	115,781	'	'
Premises and equipment	2,045	2,041	'	'
Other assets	52,454	52,398	'	'
TOTAL ASSETS	171,446	174,491	'	'
LIABILITIES AND SHAREHOLDERS' EQUITY	'	'	'	'
Other liabilities	10,141	10,002	'	'
Shareholders' equity	161,305	164,489	'	'
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$171,446	$174,491	'	'

Parent_Company_Only_Financial_3

Parent Company Only Financial Information (Interim Condensed Statements of Income) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income	'	'	'	'
Interest income	$10,769	$10,925	$32,135	$32,184
Expenses	'	'	'	'
Occupancy and equipment	676	649	1,982	1,889
Audit fees	87	50	267	193
Other	2,001	2,236	6,148	6,682
Income before federal income tax expense	3,960	4,356	11,479	12,039
Federal income tax benefit	-674	-899	-1,893	-2,344
NET INCOME	3,286	3,457	9,586	9,695
Parent Company [Member]	'	'	'	'
Income	'	'	'	'
Dividends from subsidiaries	1,500	1,500	4,500	4,625
Interest income	39	42	123	131
Management fee and other	637	581	1,704	1,547
Total income	2,176	2,123	6,327	6,303
Expenses	'	'	'	'
Compensation and benefits	680	596	2,061	1,810
Occupancy and equipment	132	91	362	273
Audit fees	98	98	256	273
Other	230	220	731	717
Total expenses	1,140	1,005	3,410	3,073
Income before federal income tax expense	1,036	1,118	2,917	3,230
Federal income tax benefit	161	136	549	493
Undistributed earnings of subsidiaries	2,089	2,203	6,120	5,972
NET INCOME	$3,286	$3,457	$9,586	$9,695

Parent_Company_Only_Financial_4

Parent Company Only Financial Information (Interim Condensed Statements of Cash Flows) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
OPERATING ACTIVITIES	'	'
Net income	$9,586	$9,695
Adjustments to reconcile net income to cash provided by operations	'	'
Share-based payment awards	423	496
Depreciation	1,903	1,802
Changes in operating assets and liabilities which used cash	'	'
Other assets	319	-1,938
Accrued interest and other liabilities	622	78
Net cash provided by (used in) operating activities	17,746	14,860
INVESTING ACTIVITIES	'	'
Purchases of equipment and premises	-2,134	-2,647
Net cash provided by (used in) investing activities	-48,142	-56,181
FINANCING ACTIVITIES	'	'
Net increase (decrease) in other borrowed funds	25,000	10,477
Cash dividends paid on common stock	-4,838	-4,553
Proceeds from the issuance of common stock	2,754	2,025
Common stock repurchased	-1,815	-1,520
Common stock purchased for deferred compensation obligations	-285	-361
Net cash provided by (used in) financing activities	27,080	37,395
Increase (decrease) in cash and cash equivalents	-3,316	-3,926
Cash and cash equivalents at beginning of period	24,920	28,590
Cash and cash equivalents at end of period	21,604	24,664
Parent Company [Member]	'	'
OPERATING ACTIVITIES	'	'
Net income	9,586	9,695
Adjustments to reconcile net income to cash provided by operations	'	'
Undistributed earnings of subsidiaries	-6,120	-5,972
Undistributed earnings of equity securities without readily determinable fair values	14	0
Share-based payment awards	423	496
Depreciation	136	84
Net amortization of AFS securities	1	3
Changes in operating assets and liabilities which used cash	'	'
Other assets	-65	-363
Accrued interest and other liabilities	939	-224
Net cash provided by (used in) operating activities	4,914	3,719
INVESTING ACTIVITIES	'	'
Maturities, calls, and sales of AFS securities	395	370
Purchases of equipment and premises	-140	-112
Repayment of advances to subsidiaries	-99	-50
Net cash provided by (used in) investing activities	156	208
FINANCING ACTIVITIES	'	'
Net increase (decrease) in other borrowed funds	-800	-297
Cash dividends paid on common stock	-4,838	-4,553
Proceeds from the issuance of common stock	2,754	2,025
Common stock repurchased	-1,815	-1,520
Common stock purchased for deferred compensation obligations	-285	-361
Net cash provided by (used in) financing activities	-4,984	-4,706
Increase (decrease) in cash and cash equivalents	86	-779
Cash and cash equivalents at beginning of period	332	1,474
Cash and cash equivalents at end of period	$418	$695

Operating_Segments_Narrative_D

Operating Segments (Narrative) (Details)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Segments (Textual) [Abstract]	'	'
Minimum percentage of reportable segments net operating results	10.00%	'
Maximum percentage of reportable segments total assets and operating results	90.00%	90.00%