Hills Bancorporation (HBIA) 10-Q 5 May 16 2016 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2016	Apr. 30, 2016
Document and Entity Information [Abstract]
Entity Registrant Name	HILLS BANCORPORATION
Entity Central Index Key	732,417
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		9,289,887
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2016

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 133,672	$ 35,427
Investment securities available for sale at fair value (amortized cost March 31, 2016 $260,649; December 31, 2015 $261,991)	263,911	264,235
Stock of Federal Home Loan Bank	12,624	11,834
Loans held for sale	4,571	5,554
Loans, net of allowance for loan losses (March 31, 2016 $27,130; December 31, 2015 $26,510)	2,111,075	2,099,174
Property and equipment, net	34,414	33,522
Tax credit real estate investment	11,370	16,314
Accrued interest receivable	10,020	8,672
Deferred income taxes, net	12,456	11,695
Other real estate	340	439
Goodwill	2,500	2,500
Other assets	2,535	4,241
Total Assets	2,599,488	2,493,607
Liabilities
Noninterest-bearing deposits	296,922	314,968
Interest-bearing deposits	1,682,659	1,575,734
Total deposits	1,979,581	1,890,702
Other borrowings	45,381	44,051
Federal Home Loan Bank borrowings	240,000	225,000
Accrued interest payable	838	846
Other liabilities	24,153	23,271
Total Liabilities	2,289,953	2,183,870
Redeemable Common Stock Held by Employee Stock Ownership Plan (ESOP)	37,988	37,562
STOCKHOLDERS' EQUITY
Common stock, no par value; authorized 20,000,000 shares; issued March 31, 2016 10,202,503 shares; December 31, 2015 10,199,643 shares	0	0
Paid in capital	43,889	43,697
Retained earnings	296,127	294,487
Accumulated other comprehensive loss	(1,650)	(1,195)
Treasury stock at cost (March 31, 2016 912,841 shares; December 31, 2015 877,589 shares)	(28,831)	(27,252)
Total Stockholders' Equity	309,535	309,737
Less maximum cash obligation related to ESOP shares	37,988	37,562
Total Stockholders' Equity Less Maximum Cash Obligations Related to ESOP Shares	271,547	272,175
Total Liabilities & Stockholders' Equity	$ 2,599,488	$ 2,493,607

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
ASSETS
Investment securities available for sale, amortized cost	$ 260,649	$ 261,991
Loans, allowance for loan losses	$ 27,130	$ 26,510
STOCKHOLDERS' EQUITY
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	20,000,000	20,000,000
Common stock, issued (in shares)	10,202,503	10,199,643
Treasury stock at cost (in shares)	912,841	877,589

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Interest income:
Loans, including fees	$ 22,528	$ 21,080
Investment securities:
Taxable	356	286
Nontaxable	828	843
Federal funds sold	44	5
Total interest income	23,756	22,214
Interest expense:
Deposits	1,921	2,164
Short-term borrowings	30	17
FHLB borrowings	2,132	1,454
Total interest expense	4,083	3,635
Net interest income	19,673	18,579
Provision for loan losses	549	(62)
Net interest income after provision for loan losses	19,124	18,641
Noninterest income:
Net gain on sale of loans	289	308
Trust fees	1,728	1,569
Service charges and fees	2,055	1,946
Rental revenue on tax credit real estate	0	511
Net gain on sale of other real estate owned and other repossessed assets	34	7
Other noninterest income	767	649
Noninterest income	4,873	4,990
Noninterest expenses:
Salaries and employee benefits	6,984	6,651
Occupancy	1,001	1,015
Furniture and equipment	1,404	1,298
Office supplies and postage	401	441
Advertising and business development	786	774
Outside services	1,776	1,814
Rental expenses on tax credit real estate	0	602
FDIC insurance assessment	303	289
Other noninterest expense	397	315
Noninterest expenses	13,052	13,199
Income before income taxes	10,945	10,432
Income taxes	3,245	3,052
Net income	$ 7,700	$ 7,380
Earnings per share:
Basic (in dollars per share)	$ 0.83	$ 0.79
Diluted (in dollars per share)	$ 0.83	$ 0.79

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 7,700	$ 7,380
Securities:
Net change in unrealized gain on securities available for sale	1,018	1,133
Reclassification adjustment for net gains realized in net income	0	0
Income taxes	(390)	(433)
Other comprehensive income on securities available for sale	628	700
Derivatives used in cash flow hedging relationships:
Net change in unrealized loss on derivatives	(1,753)	(1,092)
Income taxes	670	418
Other comprehensive loss on cash flow hedges	(1,083)	(674)
Other comprehensive (loss) income, net of tax	(455)	26
Comprehensive income	$ 7,245	$ 7,406

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Unearned ESOP Shares [Member]	Treasury Stock [Member]	Maximum Cash Obligation Related To ESOP Shares [Member]
Beginning Balance at Dec. 31, 2014	$ 255,528	$ 42,925	$ 271,924	$ (448)	$ (504)	$ (23,798)	$ (34,571)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of 292 and 1,626 shares of common stock for 3 months ended March 31, 2015 and 2016, respectively	12	12
Issuance 1,132 and 1,234 shares of common stock under the employee stock purchase plan for 3 months ended March 31, 2015 and 2016, respectively	45	45
Unearned restricted stock compensation	89	89
Forfeiture of 682 shares of common stock for 3 months ended March 31, 2015, respectively	(22)	(22)
Share-based compensation	7	7
Income tax benefit related to share-based compensation	4	4
Change related to ESOP shares	(436)						(436)
Net income	7,380		7,380
Cash dividends ($0.625 and $0.65 per share for 3 months ended March 31, 2015 and 2016, respectively)	(5,855)		(5,855)
Purchase of 4,728 and 35,252 shares of common stock for 3 months ended March 31 2015 and 2016, respectively	(195)					(195)
Other comprehensive income	26			26
Ending Balance at Mar. 31, 2015	256,583	43,060	273,449	(422)	(504)	(23,993)	(35,007)
Beginning Balance at Dec. 31, 2015	272,175	43,697	294,487	(1,195)	0	(27,252)	(37,562)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of 292 and 1,626 shares of common stock for 3 months ended March 31, 2015 and 2016, respectively	73	73
Issuance 1,132 and 1,234 shares of common stock under the employee stock purchase plan for 3 months ended March 31, 2015 and 2016, respectively	54	54
Unearned restricted stock compensation	56	56
Share-based compensation	7	7
Income tax benefit related to share-based compensation	2	2
Change related to ESOP shares	(426)						(426)
Net income	7,700		7,700
Cash dividends ($0.625 and $0.65 per share for 3 months ended March 31, 2015 and 2016, respectively)	(6,060)		(6,060)
Purchase of 4,728 and 35,252 shares of common stock for 3 months ended March 31 2015 and 2016, respectively	(1,579)					(1,579)
Other comprehensive income	(455)			(455)
Ending Balance at Mar. 31, 2016	$ 271,547	$ 43,889	$ 296,127	$ (1,650)	$ 0	$ (28,831)	$ (37,988)

CONSOLIDATED STATEMENTS OF STO7

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Stockholders' Equity [Abstract]
Issuance of common stock (in shares)	1,626	292
Issuance of common stock purchased under the employee stock purchase plan (in shares)	1,234	1,132
Forfeiture of common stock (in shares)	0	682
Cash dividends (in dollars per share)	$ 0.65	$ 0.625
Purchase of common stock (in shares)	35,252	4,728

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows from Operating Activities
Net income	$ 7,700	$ 7,380
Adjustments to reconcile net income to net cash and cash equivalents provided by operating activities:
Depreciation	727	685
Provision for loan losses	549	(62)
Share-based compensation	7	7
Forfeiture of common stock	0	(22)
Compensation expensed through issuance of common stock	127	57
Excess tax benefits from share-based compensation	(2)	(4)
Provision for deferred income taxes	(481)	(295)
Net gain on sale of other real estate owned and other repossessed assets	(34)	(7)
Increase in accrued interest receivable	(1,348)	(826)
Amortization of premium on investment securities, net	148	172
Decrease (increase) in other assets	739	(413)
Increase in accrued interest payable and other liabilities	1,567	4,750
Loans originated for sale	(32,243)	(40,577)
Proceeds on sales of loans	33,515	37,050
Net gain on sales of loans	(289)	(308)
Net cash and cash equivalents provided by operating activities	10,682	7,587
Cash Flows from Investing Activities
Proceeds from maturities of investment securities available for sale	11,031	11,906
Purchases of investment securities available for sale	(10,627)	(12,029)
Loans made to customers, net of collections	(8,995)	(9,131)
Proceeds on sale of other real estate owned and other repossessed assets	133	55
Purchases of property and equipment	(1,619)	(4,080)
Income from tax credit real estate, net	68	214
Net cash and cash equivalents used in investing activities	(10,009)	(13,065)
Cash Flows from Financing Activities
Net increase in deposits	88,879	72,266
Net increase (decrease) in other borrowings	1,330	(6,571)
Net increase in FHLB borrowings	15,000	0
Excess tax benefits related to share-based compensation	2	4
Purchase of treasury stock	(1,579)	(195)
Dividends paid	(6,060)	(5,855)
Net cash and cash equivalents provided by financing activities	97,572	59,649
Increase in cash and cash equivalents	98,245	54,171
Cash and cash equivalents:
Beginning of period	35,427	29,174
End of period	133,672	83,345
Cash payments for:
Interest paid to depositors	1,929	2,207
Interest paid on other obligations	2,162	1,471
Income taxes paid	342	120
Noncash activities:
Increase in maximum cash obligation related to ESOP shares	426	436
Transfers to other real estate owned	0	63
Sale and financing of other real estate owned	$ 135	$ 113

Summary of Significant Accounti

Summary of Significant Accounting Policies Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation: The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial reporting and with instructions for Form 10-Q and Regulation S-X. These financial statements include all adjustments (consisting of normal recurring accruals) which in the opinion of management are considered necessary for the fair presentation of the financial position and results of operations for the periods shown. Certain prior year amounts have been reclassified to conform to the current year presentation. The Company considers that it operates as one business segment, a commercial bank. Operating results for the three month period ended March 31, 2016 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2016. For further information, refer to the consolidated financial statements and footnotes thereto included in the Form 10-K Annual Report of Hills Bancorporation and subsidiary (the “Company”) for the year ended December 31, 2015 filed with the Securities Exchange Commission on March 9, 2016 . The consolidated balance sheet as of December 31, 2015 , has been derived from the audited consolidated financial statements for that period. The Company evaluated subsequent events through the filing date of its quarterly report on Form 10-Q with the SEC. Effect of New Financial Accounting Standards: In May 2014, the FASB and International Accounting Standards Board (IASB) issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). The core principle of ASU 2014-09 is that a company should recognize revenue to depict the transfer of promised good or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. For financial institutions, significant changes are not expected given that most financial instruments are not in the scope of the accounting standard update. ASU 2014-09 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2016. In August 2015, FASB issued ASU 2015-14 deferring the effective date for annual periods and interim periods within those annual periods after December 15, 2017. Earlier application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The Company is currently reviewing the provisions of this standard to determine the application to financial institutions. In February 2015, the FASB issued ASU No. 2015-02 (Topic 810), Consolidation . The ASU modifies the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIE) or voting interest entities (VOE). The standard relaxes existing criteria for determining when fees paid to a decision maker or service provider do not represent a variable interest by focusing on whether those fees are "at market". The ASU eliminates both the consolidation model specific to limited partnerships and the current presumption that a general partner controls a limited partnership. For public companies, ASU 2015-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. The Company adopted the accounting standard for the period ending March 31, 2016 and have changed the accounting for its tax credit limited partnership investments to the equity method. The impact of the change was determined to not be material. In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30), Simplifying the Presentation of Debt Issuance Costs. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this update. For public companies, ASU 2015-03 is effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption is permitted. The Company adopted ASU 2015-03 for the period ending March 31, 2016. There was no material impact on the financial statements. In April 2015, the FASB issued ASU No. 2015-05, Intangibles – Goodwill and Other Internal-Use Software (Subtopic 350-40), Customer's Accounting for Fees Paid in a Cloud Computing Arrangement. ASU 2015-05 provides guidance to customers about whether a cloud computing arrangement includes a software license. If it does, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. ASU 2015-05 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. The adoption of ASU 2015-05 by the Company did not have a material impact. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 created Subtopic 321-10, Investments-Equity Securities which is applicable to all entities except those in industries that account for substantially all investments at fair value through earnings or the change in net assets. Under this new subtopic, equity securities are generally required to be measured at fair value with unrealized holding gains and losses reflected in net income. ASU 2016-01 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. The adoption of ASU 2016-01 by the Company is not expected to have a material impact. In February 2016, the FASB issued ASU No. 2016-02 (Topic 842), Leases . The ASU provides guidance requiring lessees to recognize right-of-use assets and lease liabilities for all leases other than those that meet the definition of short-term leases. For short-term leases, lessees may elect an accounting policy by class of underlying asset under which these assets and liabilities are not recognized and lease payments are generally recognized over the lease term on a straight-line basis. Under this new ASU, lessees will recognize right-of use assets and lease liabilities for most leases currently accounted for as operating leases under generally accepted accounting principles. For public companies, ASU 2016-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The adoption of ASU 2016-02 by the Company is not expected to have a material impact. In March 2016, the FASB issued ASU No. 2016-04, Liabilities - Extinguishments of Liabilities (Subtopic 405-20), Recognition of Breakage for Certain Prepaid Stored-Value Products . ASU 2016-04 applies to all entities that offer certain prepaid stored - value products. The ASU provides guidance for the derecognition of financial liabilities related to the issuance of these products and aligns the recognition of breakage to current authoritative guidance. For public companies, ASU 2016-04 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. The adoption of ASU 2016-04 by the Company is not expected to have a material impact. In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718), Improvements to Employee Share-Based Payment Accounting . The ASU simplifies several aspects of the accounting for share-based payment transaction, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. For public companies, ASU 2016-09 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. The Company is currently reviewing the provisions of this standard to determine the impact on the Company's financial statements.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Basic earnings per share is computed using the weighted average number of actual common shares outstanding during the period. Diluted earnings per share reflects the potential dilution that would occur from the exercise of common stock options outstanding. ESOP shares are considered outstanding for this calculation unless unearned. On March 24, 2015, the Company declared a payment of a 2 -for-1 stock split of each issued and unissued share of the Company's common stock outstanding as of April 27, 2015. The additional shares were issued as a result of the stock split and were mailed to the shareholders as of May 4, 2015. All shares and earnings per share numbers have been restated for the stock split. The computation of basic and diluted earnings per share for the periods presented is as follows: Three Months Ended March 31, 2016 2015 Common shares outstanding at the beginning of the period 9,322,054 9,380,432 Weighted average number of net shares redeemed (14,370 ) (17,136 ) Weighted average shares outstanding (basic) 9,307,684 9,363,296 Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method 6,130 4,980 Weighted average number of shares (diluted) 9,313,814 9,368,276 Net income (In thousands) $ 7,700 $ 7,380 Earnings per share: Basic $ 0.83 $ 0.79 Diluted $ 0.83 $ 0.79

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2016
Equity [Abstract]
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) The following table summarizes the balances of each component of accumulated other comprehensive income (AOCI), included in stockholders’ equity, at March 31, 2016 and December 31, 2015 : March 31, 2016 December 31, 2015 (amounts in thousands) Net unrealized gain on available-for-sale securities $ 3,262 $ 2,244 Net unrealized loss on derivatives used for cash flow hedges (5,933 ) (4,180 ) Tax effect $ 1,021 $ 741 Net-of-tax amount $ (1,650 ) $ (1,195 )

Securities

Securities	3 Months Ended
	Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The carrying values of investment securities at March 31, 2016 and December 31, 2015 are summarized in the following table (dollars in thousands): March 31, 2016 December 31, 2015 Amount Percent Amount Percent Securities available for sale U.S. Treasury $ 25,175 9.54 % $ 24,978 9.45 % Other securities (FHLB, FHLMC and FNMA) 62,258 23.59 65,328 24.72 State and political subdivisions 176,478 66.87 173,929 65.83 Total securities available for sale $ 263,911 100.00 % $ 264,235 100.00 % Investment securities have been classified in the consolidated balance sheets according to management’s intent. Available-for-sale securities consist of debt securities not classified as trading or held to maturity. Available-for-sale securities are stated at fair value, and unrealized holding gains and losses, net of the related deferred tax effect, are reported as a separate component of stockholders' equity. There were no trading or held to maturity securities as of March 31, 2016 or December 31, 2015 . The carrying amount of available-for-sale securities and their approximate fair values were as follows as of March 31, 2016 and December 31, 2015 (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Estimated Fair Value March 31, 2016: U.S. Treasury $ 24,905 $ 270 $ — $ 25,175 Other securities (FHLB, FHLMC and FNMA) 61,980 292 (14 ) 62,258 State and political subdivisions 173,764 2,815 (101 ) 176,478 Total $ 260,649 $ 3,377 $ (115 ) $ 263,911 December 31, 2015: U.S. Treasury $ 24,893 $ 92 $ (7 ) $ 24,978 Other securities (FHLB, FHLMC and FNMA) 65,400 81 (153 ) 65,328 State and political subdivisions 171,698 2,375 (144 ) 173,929 Total $ 261,991 $ 2,548 $ (304 ) $ 264,235 The amortized cost and estimated fair value of available-for-sale securities classified according to their contractual maturities at March 31, 2016 , were as follows (in thousands): Amortized Cost Fair Value Due in one year or less $ 41,343 $ 41,412 Due after one year through five years 149,479 151,349 Due after five years through ten years 67,533 68,847 Due over ten years 2,294 2,303 Total $ 260,649 $ 263,911 As of March 31, 2016 investment securities with a carrying value of $71.79 million were pledged to collateralize repurchase agreements, derivative financial instruments, and other borrowings. The following table shows the fair value, gross unrealized losses and the percentage of fair value represented by gross unrealized losses of applicable investment securities owned by the Company, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2016 and December 31, 2015 (in thousands): Less than 12 months 12 months or more Total March 31, 2016 # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % U.S. Treasury — $ — $ — — % — $ — $ — — % — $ — $ — — % Other securities (FHLB, FHLMC and FNMA) 4 8,924 (14 ) 0.16 — — — — 4 8,924 (14 ) 0.16 State and political subdivisions 44 11,020 (73 ) 0.66 14 2,650 (28 ) 1.06 58 13,670 (101 ) 0.74 Total temporarily impaired securities 48 $ 19,944 $ (87 ) 0.44 % 14 $ 2,650 $ (28 ) 1.06 % 62 $ 22,594 $ (115 ) 0.51 % Less than 12 months 12 months or more Total December 31, 2015 # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % U.S. Treasury 3 $ 7,455 $ (7 ) 0.09 % — $ — $ — — % 3 $ 7,455 $ (7 ) 0.09 % Other securities (FHLB, FHLMC and FNMA) 15 36,830 (153 ) 0.42 — — — — 15 36,830 (153 ) 0.42 State and political subdivisions 56 13,557 (70 ) 0.52 27 5,633 (74 ) 1.31 83 19,190 (144 ) 0.75 Total temporarily impaired securities 74 $ 57,842 $ (230 ) 0.40 % 27 $ 5,633 $ (74 ) 1.31 % 101 $ 63,475 $ (304 ) 0.48 % The Company considered the following information in reaching the conclusion that the impairments disclosed in the table above are temporary and not other-than-temporary impairments. None of the unrealized losses in the above table was due to the deterioration in the credit quality of any of the issues that might result in the non-collection of contractual principal and interest. The unrealized losses are due to changes in interest rates. The Company has not recognized any unrealized loss in income because management does not have the intent to sell the securities included in the previous table. Management has concluded that it is more likely than not that the Company will not be required to sell these securities prior to recovery of the amortized cost basis.

Loans

Loans	3 Months Ended
	Mar. 31, 2016
Receivables [Abstract]
Loans	Loans Classes of loans are as follows: March 31, December 31, (Amounts In Thousands) Agricultural $ 90,620 $ 101,588 Commercial and financial 173,736 184,199 Real estate: Construction, 1 to 4 family residential 58,293 51,346 Construction, land development and commercial 105,607 83,121 Mortgage, farmland 189,882 187,856 Mortgage, 1 to 4 family first liens 725,924 727,160 Mortgage, 1 to 4 family junior liens 118,115 117,873 Mortgage, multi-family 284,715 271,974 Mortgage, commercial 315,965 323,409 Loans to individuals 22,959 24,019 Obligations of state and political subdivisions 51,623 52,371 $ 2,137,439 $ 2,124,916 Net unamortized fees and costs 766 768 $ 2,138,205 $ 2,125,684 Less allowance for loan losses 27,130 26,510 $ 2,111,075 $ 2,099,174 Changes in the allowance for loan losses, the allowance for loan losses applicable to impaired loans and the related loan balance of impaired loans for the three months ended March 31, 2016 were as follows: Three Months Ended March 31, 2016 Agricultural Commercial and Financial Real Estate: Construction and land development Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family Real Estate: Mortgage, multi- family and commercial Other Total (Amounts In Thousands) Allowance for loan losses: Beginning balance $ 3,082 $ 4,517 $ 2,280 $ 3,342 $ 8,172 $ 4,223 $ 894 $ 26,510 Charge-offs — (55 ) — (10 ) (344 ) (66 ) (169 ) (644 ) Recoveries 142 253 52 — 213 11 44 715 Provision (270 ) (404 ) 427 612 (5 ) 22 167 549 Ending balance $ 2,954 $ 4,311 $ 2,759 $ 3,944 $ 8,036 $ 4,190 $ 936 $ 27,130 Ending balance, individually evaluated for impairment $ 868 $ 268 $ 32 $ 670 $ 310 $ 88 $ 22 $ 2,258 Ending balance, collectively evaluated for impairment $ 2,086 $ 4,043 $ 2,727 $ 3,274 $ 7,726 $ 4,102 $ 914 $ 24,872 Loans: Ending balance $ 90,620 $ 173,736 $ 163,900 $ 189,882 $ 844,039 $ 600,680 $ 74,582 $ 2,137,439 Ending balance, individually evaluated for impairment $ 12,647 $ 2,406 $ 1,450 $ 8,098 $ 5,594 $ 3,649 $ 22 $ 33,866 Ending balance, collectively evaluated for impairment $ 77,973 $ 171,330 $ 162,450 $ 181,784 $ 838,445 $ 597,031 $ 74,560 $ 2,103,573 Changes in the allowance for loan losses for the three months ended March 31, 2015 were as follows: Three Months Ended March 31, 2015 Agricultural Commercial and Financial Real Estate: Construction and land development Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family Real Estate: Mortgage, multi- family and commercial Other Total (Amounts In Thousands) Allowance for loan losses: Beginning balance $ 2,515 $ 4,231 $ 2,241 $ 2,672 $ 7,419 $ 4,195 $ 747 $ 24,020 Charge-offs (43 ) (66 ) (84 ) — (347 ) (179 ) (48 ) (767 ) Recoveries 82 401 151 6 413 70 46 1,169 Provision (10 ) (208 ) (58 ) 99 (29 ) 39 105 (62 ) Ending balance $ 2,544 $ 4,358 $ 2,250 $ 2,777 $ 7,456 $ 4,125 $ 850 $ 24,360 Ending balance, individually evaluated for impairment $ 13 $ 7 $ 33 $ 26 $ 68 $ 8 $ — $ 155 Ending balance, collectively evaluated for impairment $ 2,531 $ 4,351 $ 2,217 $ 2,751 $ 7,388 $ 4,117 $ 850 $ 24,205 Loans: Ending balance $ 88,574 $ 180,392 $ 126,544 $ 169,058 $ 788,782 $ 564,657 $ 76,163 $ 1,994,170 Ending balance, individually evaluated for impairment $ 1,851 $ 2,284 $ 954 $ 2,464 $ 3,559 $ 9,536 $ — $ 20,648 Ending balance, collectively evaluated for impairment $ 86,723 $ 178,108 $ 125,590 $ 166,594 $ 785,223 $ 555,121 $ 76,163 $ 1,973,522 The following table presents the credit quality indicators by type of loans in each category as of March 31, 2016 and December 31, 2015 , respectively (amounts in thousands): Agricultural Commercial and Financial Real Estate: Construction, 1 to 4 family residential Real Estate: Construction, land development and commercial March 31, 2016 Grade: Excellent $ 1,773 $ 3,050 $ — $ 255 Good 18,163 27,861 2,771 12,653 Satisfactory 34,358 101,014 37,546 70,736 Monitor 17,368 25,804 11,144 15,110 Special Mention 4,534 11,664 5,768 6,392 Substandard 14,424 4,343 1,064 461 Total $ 90,620 $ 173,736 $ 58,293 $ 105,607 Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family first liens Real Estate: Mortgage, 1 to 4 family junior liens Real Estate: Mortgage, multi- family March 31, 2016 Grade: Excellent $ 2,517 $ 563 $ — $ 6,560 Good 33,497 14,525 2,654 67,078 Satisfactory 115,190 622,556 107,567 175,070 Monitor 26,787 53,133 4,227 30,733 Special Mention 2,261 16,510 1,867 4,700 Substandard 9,630 18,637 1,800 574 Total $ 189,882 $ 725,924 $ 118,115 $ 284,715 Real Estate: Mortgage, commercial Loans to individuals Obligations of state and political subdivisions Total March 31, 2016 Grade: Excellent $ 15,990 $ — $ 2,346 $ 33,054 Good 80,891 92 36,454 296,639 Satisfactory 183,139 22,205 12,287 1,481,668 Monitor 26,456 237 518 211,517 Special Mention 5,522 209 18 59,445 Substandard 3,967 216 — 55,116 Total $ 315,965 $ 22,959 $ 51,623 $ 2,137,439 Agricultural Commercial and Financial Real Estate: Construction, 1 to 4 family residential Real Estate: Construction, land development and commercial December 31, 2015 Grade: Excellent $ 1,786 $ 3,298 $ — $ 260 Good 15,959 38,764 1,898 11,570 Satisfactory 36,819 102,188 34,357 52,731 Monitor 18,064 27,181 8,684 11,550 Special Mention 25,356 8,231 5,842 6,542 Substandard 3,604 4,537 565 468 Total $ 101,588 $ 184,199 $ 51,346 $ 83,121 Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family first liens Real Estate: Mortgage, 1 to 4 family junior liens Real Estate: Mortgage, multi- family December 31, 2015 Grade: Excellent $ 2,559 $ 426 $ — $ 6,651 Good 31,186 15,773 2,992 64,002 Satisfactory 112,038 620,731 107,091 166,193 Monitor 27,304 55,499 4,198 29,732 Special Mention 11,181 16,237 1,846 4,873 Substandard 3,588 18,494 1,746 523 Total $ 187,856 $ 727,160 $ 117,873 $ 271,974 Real Estate: Mortgage, commercial Loans to individuals Obligations of state and political subdivisions Total December 31, 2015 Grade: Excellent $ 12,484 $ — $ 2,365 $ 29,829 Good 81,305 70 37,045 300,564 Satisfactory 187,728 23,197 12,425 1,455,498 Monitor 32,141 285 518 215,156 Special Mention 6,183 198 — 86,489 Substandard 3,568 269 18 37,380 Total $ 323,409 $ 24,019 $ 52,371 $ 2,124,916 The below are descriptions of the credit quality indicators: Excellent – Excellent rated loans are prime quality loans covered by highly liquid collateral with generous margins or supported by superior current financial conditions reflecting substantial net worth, relative to total credit extended, and based on assets of a stable and non-speculative nature whose values can be readily verified. Identified repayment source or cash flow is abundant and assured. Good – Good rated loans are adequately secured by readily marketable collateral or good financial condition characterized by liquidity, flexibility and sound net worth. Loans are supported by sound primary and secondary payment sources and timely and accurate financial information. Satisfactory – Satisfactory rated loans are loans to borrowers of average financial means not especially vulnerable to changes in economic or other circumstances, where the major support for the extension is sufficient collateral of a marketable nature, and the primary source of repayment is seen to be clear and adequate. Monitor – Monitor rated loans are identified by management as warranting special attention for a variety of reasons that may bear on ultimate collectability. This may be due to adverse trends, a particular industry, loan structure, or repayment that is dependent on projections, or a one-time occurrence. Special Mention – Special mention rated loans are supported by a marginal payment capacity and are marginally protected by collateral. There are identified weaknesses that if not monitored and corrected may adversely affect the Company’s credit position. A special mention credit would typically have a weakness in one of the general categories (cash flow, collateral position or payment history) but not in all categories. Substandard – Substandard loans are not adequately supported by the paying capacity of the borrower and may be inadequately collateralized. These loans have a well-defined weakness or weaknesses. For these loans, it is more probable than not that the Company could sustain some loss if the deficiency(ies) is not corrected. Past due loans as of March 31, 2016 and December 31, 2015 were as follows: 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days or More Past Due Total Past Due Current Total Loans Receivable Accruing Loans Past Due 90 Days or More (Amounts In Thousands) March 31, 2016 Agricultural $ 7,275 $ 149 $ 1,264 $ 8,688 $ 81,932 $ 90,620 $ 283 Commercial and financial 697 1,074 1,158 2,929 170,807 173,736 50 Real estate: Construction, 1 to 4 family residential 767 — 173 940 57,353 58,293 — Construction, land development and commercial 1,145 121 — 1,266 104,341 105,607 — Mortgage, farmland 519 — — 519 189,363 189,882 — Mortgage, 1 to 4 family first liens 5,290 213 1,629 7,132 718,792 725,924 331 Mortgage, 1 to 4 family junior liens 131 50 49 230 117,885 118,115 — Mortgage, multi-family — 135 40 175 284,540 284,715 — Mortgage, commercial 426 474 173 1,073 314,892 315,965 — Loans to individuals 86 29 — 115 22,844 22,959 — Obligations of state and political subdivisions — — — — 51,623 51,623 — $ 16,336 $ 2,245 $ 4,486 $ 23,067 $ 2,114,372 $ 2,137,439 $ 664 December 31, 2015 Agricultural $ 3,064 $ 961 $ — $ 4,025 $ 97,563 $ 101,588 $ — Commercial and financial 854 71 1,312 2,237 181,962 184,199 — Real estate: Construction, 1 to 4 family residential — — 214 214 51,132 51,346 — Construction, land development and commercial — — 88 88 $ 83,033 83,121 — Mortgage, farmland 320 88 — 408 187,448 187,856 — Mortgage, 1 to 4 family first liens 4,526 1,192 2,085 7,803 $ 719,357 727,160 406 Mortgage, 1 to 4 family junior liens 250 13 110 373 117,500 117,873 — Mortgage, multi-family 135 — 113 248 $ 271,726 271,974 — Mortgage, commercial 1,033 — 331 1,364 322,045 323,409 61 Loans to individuals 158 40 — 198 $ 23,821 24,019 — Obligations of state and political subdivisions — — — — 52,371 52,371 — $ 10,340 $ 2,365 $ 4,253 $ 16,958 $ 2,107,958 $ 2,124,916 $ 467 The Company does not have a material amount of loans that are past due less than 90 days where there are serious doubts as to the ability of the borrowers to comply with the loan repayment terms. Certain impaired loan information by loan type at March 31, 2016 and December 31, 2015 , was as follows: March 31, 2016 December 31, 2015 Non-accrual loans (1) Accruing loans past due 90 days or more TDR loans Non- accrual loans (1) Accruing loans past due 90 days or more TDR loans (Amounts In Thousands) (Amounts In Thousands) Agricultural $ 1,659 $ 283 $ 225 $ — $ — $ 1,710 Commercial and financial 1,493 50 863 1,498 — 612 Real estate: Construction, 1 to 4 family residential 173 — 1,016 214 — 473 Construction, land development and commercial 141 — 121 145 — 122 Mortgage, farmland 1,281 — 1,074 — — 2,233 Mortgage, 1 to 4 family first liens 3,677 331 1,356 3,845 406 1,369 Mortgage, 1 to 4 family junior liens 201 — 26 279 — 27 Mortgage, multi-family 367 — — 449 — — Mortgage, commercial 1,133 — 2,150 985 61 1,733 $ 10,125 $ 664 $ 6,831 $ 7,415 $ 467 $ 8,279 (1) There were $5.11 million and $2.31 million of TDR loans included within nonaccrual loans as of March 31, 2016 and December 31, 2015 , respectively. Loans 90 days or more past due that are still accruing interest increased $0.20 million from December 31, 2015 to March 31, 2016 due to an increase in the number of loans past due greater than 90 days. As of March 31, 2016 there were 6 accruing loans past due 90 days or more. The average accruing loans past due as of March 31, 2016 are $0.11 million . The average accruing loans past due 90 days or more as of December 31, 2015 was $0.09 million . The accruing loans past due 90 days or more balances are believed to be adequately collateralized and the Company expects to collect all principal and interest as contractually due under these loans. The Company may modify the terms of a loan to maximize the collection of amounts due. Such a modification is considered a troubled debt restructuring (“TDR”). In most cases, the modification is either a reduction in interest rate, conversion to interest only payments or an extension of the maturity date. The borrower is experiencing financial difficulties or is expected to experience difficulties in the near-term, so a concessionary modification is granted to the borrower that would otherwise not be considered. TDR loans accrue interest as long as the borrower complies with the revised terms and conditions and has demonstrated repayment performance at a level commensurate with the modified terms over several payment cycles. Below is a summary of information for TDR loans as of March 31, 2016 and December 31, 2015 : March 31, 2016 December 31, 2015 Number of contracts Recorded investment Commitments outstanding Number of contracts Recorded investment Commitments outstanding (Amounts In Thousands) (Amounts In Thousands) Agricultural 7 $ 1,666 $ 31 7 $ 1,710 $ 32 Commercial and financial 12 2,059 319 8 1,818 241 Real estate: Construction, 1 to 4 family residential 5 1,188 — 3 646 138 Construction, land development and commercial 1 121 — 1 122 — Mortgage, farmland 6 2,355 — 5 2,233 — Mortgage, 1 to 4 family first liens 13 1,557 — 13 1,575 — Mortgage, 1 to 4 family junior liens 2 33 93 2 36 — Mortgage, multi-family — — — 1 71 — Mortgage, commercial 13 2,965 — 10 2,381 — Loans to individuals — — — — — — 59 $ 11,944 $ 443 50 $ 10,592 $ 411 The following is a summary of TDR loans that were modified during the three months ended March 31, 2016 : Three Months Ended March 31, 2016 Number of contracts Pre-modification recorded investment Post-modification recorded investment (Amounts In Thousands) Agricultural — $ — $ — Commercial and financial 4 349 349 Real estate: Construction, 1 to 4 family residential 2 543 543 Construction, land development and commercial — — — Mortgage, farmland 1 132 132 Mortgage, 1 to 4 family first lien — — — Mortgage, 1 to 4 family junior liens — — — Mortgage, multi-family — — — Mortgage, commercial 3 629 629 10 $ 1,653 $ 1,653 The Company had commitments to lend $0.44 million in additional borrowings to restructured loan customers as of March 31, 2016 . The Company had commitments to lend $0.41 million in additional borrowings to restructured loan customers as of December 31, 2015 . These commitments were in the normal course of business. The additional borrowings were not used to facilitate payments on these loans. There were $0.00 million and $0.00 million of TDR loans that were in payment default (defined as past due 90 days or more) during the quarter ended March 31, 2016 and year ended December 31, 2015 . Information regarding impaired loans as of and for the three months ended March 31, 2016 is as follows: March 31, 2016 Three Months Ended Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: (Amounts In Thousands) Agricultural $ 126 $ 278 $ — $ 133 $ 2 Commercial and financial 1,552 2,275 — 1,574 6 Real estate: Construction, 1 to 4 family residential 739 739 — 739 8 Construction, land development and commercial 206 293 — 208 1 Mortgage, farmland 527 645 — 530 6 Mortgage, 1 to 4 family first liens 3,633 4,507 — 3,668 13 Mortgage, 1 to 4 family junior liens 150 450 — 157 — Mortgage, multi-family 151 262 — 190 — Mortgage, commercial 2,409 3,673 — 2,416 20 Loans to individuals — 20 — — — $ 9,493 $ 13,142 $ — $ 9,615 $ 56 With an allowance recorded: Agricultural $ 12,521 $ 12,524 $ 868 $ 12,570 $ 140 Commercial and financial 854 880 268 907 7 Real estate: Construction, 1 to 4 family residential 449 461 20 449 3 Construction, land development and commercial 56 57 12 56 — Mortgage, farmland 7,571 7,571 670 7,578 83 Mortgage, 1 to 4 family first liens 1,733 1,846 294 1,762 6 Mortgage, 1 to 4 family junior liens 78 233 16 80 — Mortgage, multi-family 216 221 46 218 — Mortgage, commercial 873 906 42 880 9 Loans to individuals 22 22 22 36 1 $ 24,373 $ 24,721 $ 2,258 $ 24,536 $ 249 Total: Agricultural $ 12,647 $ 12,802 $ 868 $ 12,703 $ 142 Commercial and financial 2,406 3,155 268 2,481 13 Real estate: Construction, 1 to 4 family residential 1,188 1,200 20 1,188 11 Construction, land development and commercial 262 350 12 264 1 Mortgage, farmland 8,098 8,216 670 8,108 89 Mortgage, 1 to 4 family first liens 5,366 6,353 294 5,430 19 Mortgage, 1 to 4 family junior liens 228 683 16 237 — Mortgage, multi-family 367 483 46 408 — Mortgage, commercial 3,282 4,579 42 3,296 29 Loans to individuals 22 42 22 36 1 $ 33,866 $ 37,863 $ 2,258 $ 34,151 $ 305 Information regarding impaired loans as of December 31, 2015 is as follows: Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: (Amounts In Thousands) Agricultural $ 1,609 $ 1,773 $ — Commercial and financial 1,263 1,981 — Real estate: Construction, 1 to 4 family residential 238 238 — Construction, land development and commercial 210 314 — Mortgage, farmland 2,233 2,351 — Mortgage, 1 to 4 family first liens 3,558 4,419 — Mortgage, 1 to 4 family junior liens 189 500 — Mortgage, multi-family 157 226 — Mortgage, commercial 1,831 3,018 — Loans to individuals — 20 — $ 11,288 $ 14,840 $ — With an allowance recorded: Agricultural $ 101 $ 101 $ 1 Commercial and financial 847 847 324 Real estate: Construction, 1 to 4 family residential 449 461 9 Construction, land development and commercial 57 58 13 Mortgage, farmland — — — Mortgage, 1 to 4 family first liens 2,062 2,156 306 Mortgage, 1 to 4 family junior liens 117 270 20 Mortgage, multi-family 292 332 58 Mortgage, commercial 948 1,030 52 Loans to individuals 100 100 100 $ 4,973 $ 5,355 $ 883 Total: Agricultural $ 1,710 $ 1,874 $ 1 Commercial and financial 2,110 2,828 324 Real estate: Construction, 1 to 4 family residential 687 699 9 Construction, land development and commercial 267 372 13 Mortgage, farmland 2,233 2,351 — Mortgage, 1 to 4 family first liens 5,620 6,575 306 Mortgage, 1 to 4 family junior liens 306 770 20 Mortgage, multi-family 449 558 58 Mortgage, commercial 2,779 4,048 52 Loans to individuals 100 120 100 $ 16,261 $ 20,195 $ 883 Impaired loans increased $17.61 million from December 31, 2015 to March 31, 2016 . Impaired loans include any loan that has been placed on nonaccrual status, accruing loans past due 90 days or more and TDR loans. Impaired loans also include loans that, based on management’s evaluation of current information and events, the Company expects to be unable to collect in full according to the contractual terms of the original loan agreement. Impaired loans were 1.58% of loans held for investment as of March 31, 2016 and 0.76% as of December 31, 2015 . The increase in impaired loans is due mainly to an increase in nonaccrual loans of $2.71 million , a $16.22 million agricultural and farmland real estate relationship with a specific allowance for losses, and a decrease in TDR loans of $1.45 million from December 31, 2015 to March 31, 2016 . The Company regularly reviews a substantial portion of the loans in the portfolio and assesses whether the loans are impaired in accordance with ASC 310. If the loans are impaired, the Company determines if a specific allowance is appropriate. In addition, the Company's management also reviews and, where determined necessary, provides allowances for particular loans based upon (1) reviews of specific borrowers and (2) management’s assessment of areas that management considers are of higher credit risk, including loans that have been restructured. Loans that are determined not to be impaired and for which there are no specific allowances are classified into one or more risk categories. Based upon the risk category assigned, the Company allocates a percentage, as determined by management, for a required allowance needed. The determination of the appropriate percentage begins with historical loss experience factors, which are then adjusted for levels and trends in past due loans, levels and trends in charged-off and recovered loans, trends in volume growth, trends in problem and watch loans, trends in restructured loans, local economic trends and conditions, industry and other conditions, and effects of changing interest rates. Specific allowances for losses on impaired loans are established if the loan balances exceed the net present value of the relevant future cash flows or the fair value of the relevant collateral based on updated appraisals and/or updated collateral analysis for the properties if the loan is collateral dependent. The Company may recognize a charge off or record a specific allowance related to an impaired loan if there is a collateral shortfall or it is unlikely the borrower can make all principal and interest payments as contractually due. For loans that are collateral dependent, losses are evaluated based on the portion of a loan that exceeds the fair market value of the collateral. In general, this is the amount that the carrying value of the loan exceeds the related appraised value less estimated costs to sell the collateral. Generally, it is the Company’s policy not to rely on appraisals that are older than one year prior to the date the impairment is being measured. The most recent appraisal values may be adjusted if, in the Company’s judgment, experience and other market data indicate that the property’s value, use, condition, exit market or other variable affecting its value may have changed since the appraisal was performed, consistent with the December 2006 joint interagency guidance on the allowance for loan losses. The charge off or loss adjustment supported by an appraisal is considered the minimum charge off. Any adjustments made to the appraised value are to provide an additional charge off or specific reserve based on the applicable facts and circumstances. In instances where there is an estimated decline in value, a specific reserve may be provided or a charge off taken pending confirmation of the amount of the loss from an updated appraisal. Upon receipt of the new appraisals, an additional specific reserve may be provided or charge off taken based on the appraised value of the collateral. On average, appraisals are obtained within one month of order.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The carrying value and estimated fair values of the Company's financial instruments as of March 31, 2016 are as follows: March 31, 2016 Carrying Amount Estimated Fair Value Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 135,553 $ 135,553 $ 135,553 $ — $ — Investment securities 276,535 276,535 — 276,535 — Loans held for sale 4,571 4,571 — 4,571 — Loans Agricultural 87,666 87,695 — — 87,695 Commercial and financial 169,425 169,412 — — 169,412 Real estate: Construction, 1 to 4 family residential 57,302 57,303 — — 57,303 Construction, land development and commercial 103,839 103,842 — — 103,842 Mortgage, farmland 185,938 186,148 — — 186,148 Mortgage, 1 to 4 family first liens 719,119 716,974 — — 716,974 Mortgage, 1 to 4 family junior liens 116,884 122,408 — — 122,408 Mortgage, multi-family 282,957 285,700 — — 285,700 Mortgage, commercial 313,533 312,448 — — 312,448 Loans to individuals 22,410 22,400 — — 22,400 Obligations of state and political subdivisions 51,236 50,461 — — 50,461 Accrued interest receivable 10,020 10,020 — 10,020 — Total financial instrument assets $ 2,536,988 $ 2,541,470 $ 135,553 $ 291,126 $ 2,114,791 Financial instrument liabilities Deposits Noninterest-bearing deposits $ 296,922 $ 296,922 $ — $ 296,922 $ — Interest-bearing deposits 1,682,659 1,684,108 — 1,684,108 — Other borrowings 45,381 45,381 — 45,381 — Federal Home Loan Bank borrowings 240,000 240,044 — 240,044 — Interest rate swaps 5,933 5,933 — 5,933 — Accrued interest payable 838 838 — 838 — Total financial instrument liabilities $ 2,271,733 $ 2,273,226 $ — $ 2,273,226 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 367,666 $ — $ — $ — $ — Letters of credit 12,293 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 379,959 $ — $ — $ — $ — (1) Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. The carrying value and estimated fair values of the Company's financial instruments as of December 31, 2015 are as follows: December 31, 2015 Carrying Amount Estimated Fair Value Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 35,427 $ 35,427 $ 35,427 $ — $ — Investment securities 276,069 276,069 — 276,069 — Loans held for sale 5,554 5,554 — 5,554 — Loans Agricultural 98,506 98,530 — — 98,530 Commercial and financial 179,682 179,649 — — 179,649 Real estate: Construction, 1 to 4 family residential 50,480 50,487 — — 50,487 Construction, land development and commercial 81,707 81,705 — — 81,705 Mortgage, farmland 184,514 184,640 — — 184,640 Mortgage, 1 to 4 family first liens 720,229 718,566 — — 718,566 Mortgage, 1 to 4 family junior liens 116,632 122,173 — — 122,173 Mortgage, multi-family 270,261 272,446 — — 272,446 Mortgage, commercial 320,899 319,090 — — 319,090 Loans to individuals 23,518 23,509 — — 23,509 Obligations of state and political subdivisions 51,978 51,073 — — 51,073 Accrued interest receivable 8,672 8,672 — 8,672 — Total financial instrument assets $ 2,424,128 $ 2,427,590 $ 35,427 $ 290,295 $ 2,101,868 Financial instrument liabilities: Deposits Noninterest-bearing deposits $ 314,968 $ 314,968 $ — $ 314,968 $ — Interest-bearing deposits 1,575,734 1,577,684 — 1,577,684 — Other borrowings 44,051 44,051 — 44,051 — Federal Home Loan Bank borrowings 225,000 226,157 — 226,157 — Interest rate swaps 4,180 4,180 4,180 Accrued interest payable 846 846 — 846 — Total financial instrument liabilities $ 2,164,779 $ 2,167,886 $ — $ 2,167,886 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 344,602 $ — $ — $ — $ — Letters of credit 11,718 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 356,320 $ — $ — $ — $ — (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. Fair value of financial instruments : FASB ASC 820, Fair Value Measurements and Disclosures (“ASC 820”) provides a single definition for fair value, a framework for measuring fair value and expanded disclosures concerning fair value. Fair value is defined under ASC 820 as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company determines the fair market value of its financial instruments based on the fair value hierarchy established in ASC 820. There are three levels of inputs that may be used to measure fair value as follows: Level 1 Quoted prices in active markets for identical assets or liabilities. Level 2 Observable inputs other than quoted prices included within Level 1. Observable inputs include the quoted prices for similar assets or liabilities in markets that are not active and inputs other than quoted prices that are observable for the asset or liability. Level 3 Unobservable inputs supported by little or no market activity for financial instruments. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. It is the Company’s policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. The Company is required to use observable inputs, to the extent available, in the fair value estimation process unless that data results from forced liquidations or distressed sales. The following is a description of valuation methodologies used for assets and liabilities recorded at fair value and for estimating fair value for assets or liabilities not recorded at fair value. ASSETS Cash and cash equivalents : The carrying amounts reported in the consolidated balance sheets for cash and short-term instruments approximate their fair values (Level 1). Investment securities available for sale : Investment securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If a quoted price is not available, the fair value is obtained from benchmarking the security against similar securities. All of the Company’s securities are considered Level 2. The pricing for investment securities is obtained from an independent source. There are no level 1 or level 3 investment securities owned by the Company. The Company obtains an understanding of the independent source’s valuation methodologies used to determine fair value by level of security. The Company validates assigned fair values on a sample basis using an additional third-party provider pricing service to determine if the fair value measurement is reasonable. Due to the nature of our investment portfolio, we do not expect significant and unusual fluctuations as fair value changes primarily relate to interest rate changes. No unusual fluctuations were identified during the three months ended March 31, 2016 . If a fluctuation requiring investigation was identified, the Company would research the change with the independent source or other available information. Loans held for sale : Loans held for sale are carried at historical cost. The carrying amount is a reasonable estimate of fair value because of the short time between origination of the loan and its sale on the secondary market (Level 2). The market is active for these loans and as a result prices for similar assets are available. Loans : The Company does not record loans at fair value on a recurring basis. For variable-rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values (Level 3). The fair values for other loans are determined using estimated future cash flows, discounted at the interest rates currently being offered for loans with similar terms to borrowers with similar credit quality utilizing an entrance price concept (Level 3). The Company does record nonrecurring fair value adjustments to loans to reflect (1) partial write-downs that are based on the observable market price or appraised value of the collateral or (2) the full charge-off of the loan carrying value (Level 3). These loans are considered Level 3 as the instruments used to determine fair market value require significant management judgment and estimation. Foreclosed assets : The Company does not record foreclosed assets at fair value on a recurring basis. Foreclosed assets consist mainly of other real estate owned but may include other types of assets repossessed by the Company. Foreclosed assets are adjusted to the lower of carrying value or fair value less the cost of disposal. Fair value is generally based upon independent market prices or appraised values of the collateral, and may include a marketability discount as deemed necessary by management based on its experience with similar types of real estate. The value of foreclosed assets is evaluated periodically as a nonrecurring fair value adjustment. Foreclosed assets are classified as Level 3. Off-balance sheet instruments : Fair values for outstanding letters of credit are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties' credit standing. The fair value of the outstanding letters of credit is not significant. Unfunded loan commitments are not valued since the loans are generally priced at market at the time of funding (Level 2). Accrued interest receivable : The fair value of accrued interest receivable equals the amount receivable due to the current nature of the amounts receivable (Level 2). Non-marketable equity investments : Non-marketable equity investments are recorded under the cost or equity method of accounting. There are generally restrictions on the sale and/or liquidation of these investments, including stock of the Federal Home Loan Bank. The carrying value of stock of the Federal Home Loan Bank approximates fair value (Level 2). LIABILITIES Deposit liabilities : Deposit liabilities are carried at historical cost. The fair value of demand deposits, savings accounts and certain money market account deposits is the amount payable on demand at the reporting date. The fair value of fixed maturity certificates of deposit is estimated using the rates currently offered for deposits of similar remaining maturities. If the fair value of the fixed maturity certificates of deposit is calculated at less than the carrying amount, the carrying value of these deposits is reported as the fair value (Level 2). Deposit liabilities are classified as Level 2 due to available prices for similar liabilities in the market. Other borrowings : Other borrowings are carried at historical cost and include federal funds purchased and securities sold under agreements to repurchase. The carrying amount is a reasonable estimate of fair value because of the relatively short time between the origination of the liability and its expected realization (Level 2). Other borrowings are classified as Level 2 due to available prices for similar liabilities in the market. Federal Home Loan Bank borrowings : Federal Home Loan Bank borrowings are recorded at historical cost. The fair values of the Company’s Federal Home Loan Bank borrowings are estimated using discounted cash flow analysis, based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements (Level 2). Federal Home Loan Bank borrowings are classified as Level 2 due to available prices for similar liabilities in the market. Interest Rate Swap Agreements : The fair value is estimated using forward-looking interest rate curves and is calculated using discounted cash flows that are observable or that can be corroborated by observable market data (Level 2). Accrued interest payable : The fair value of accrued interest payable equals the amount payable due to the current nature of the amounts payable (Level 2). Assets and Liabilities Recorded at Fair Value on a Recurring Basis The table below represents the balances of assets and liabilities measured at fair value on a recurring basis: March 31, 2016 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Securities available for sale (Amounts In Thousands) U.S. Treasury $ — $ 25,175 $ — $ 25,175 State and political subdivisions — 176,478 — 176,478 Other securities (FHLB, FHLMC and FNMA) — 62,258 — 62,258 Derivative Financial Instruments Interest rate swaps $ — (5,933 ) $ — (5,933 ) Total $ — $ 257,978 $ — $ 257,978 December 31, 2015 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Securities available for sale (Amounts In Thousands) U.S. Treasury $ — $ 24,978 $ — $ 24,978 State and political subdivisions — 173,929 — 173,929 Other securities (FHLB, FHLMC and FNMA) — 65,328 — 65,328 Derivative Financial Instruments Interest rate swaps — (4,180 ) — (4,180 ) Total $ — $ 260,055 $ — $ 260,055 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. There were no transfers between Levels 1, 2 or 3 during the three months ended March 31, 2016 and the year ended December 31, 2015 . Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis The Company is required to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower-of-cost-or-market accounting or write-downs of individual assets. The valuation methodologies used to measure these fair value adjustments are described above. The following tables present the Company’s assets that are measured at fair value on a nonrecurring basis. March 31, 2016 Three Months Ended March 31, 2016 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Total Losses (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 1,937 $ 1,937 $ — Commercial and financial — — 1,438 1,438 20 Real Estate: Construction, 1 to 4 family residential — — 972 972 — Construction, land development and commercial — — 129 129 — Mortgage, farmland — — 1,959 1,959 — Mortgage, 1 to 4 family first liens — — 4,321 4,321 275 Mortgage, 1 to 4 family junior liens — — 212 212 — Mortgage, multi-family — — 321 321 — Mortgage, commercial — — 1,307 1,307 65 Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 12,596 $ 12,596 $ 360 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully-charged off is zero. (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets. Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis (continued) December 31, 2015 Year Ended December 31, 2015 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Total Losses (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 1,470 $ 1,470 $ 116 Commercial and financial — — 1,178 1,178 56 Real Estate: Construction, 1 to 4 family residential — — 482 482 161 Construction, land development and commercial — — 132 132 35 Mortgage, farmland — — 2,233 2,233 — Mortgage, 1 to 4 family first liens — — 4,487 4,487 529 Mortgage, 1 to 4 family junior liens — — 286 286 166 Mortgage, multi-family — — 391 391 38 Mortgage, commercial — — 1,152 1,152 140 Loans to individuals — — — — — Foreclosed assets (5) — — 100 100 69 Total $ — $ — $ 11,911 $ 11,911 $ 1,310 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully-charged off is zero. (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.

Stock Repurchase Program

Stock Repurchase Program	3 Months Ended
	Mar. 31, 2016
Equity [Abstract]
Stock Repurchase Program	Stock Repurchase Program On July 26, 2005, the Company’s Board of Directors authorized a program to repurchase up to a total of 1,500,000 shares of the Company’s common stock (the “2005 Stock Repurchase Program”). The Company’s Board of Directors has authorized the 2005 Stock Repurchase Program through December 31, 2017. The Company expects the purchases pursuant to the 2005 Stock Repurchase Program to be made from time to time in private transactions at a price equal to the most recent quarterly independent appraisal of the shares of the Company’s common stock and with the Board reviewing the overall results of the 2005 Stock Repurchase Program on a quarterly basis. All purchases made pursuant to the 2005 Stock Repurchase Program since its inception have been made on that basis. The amount and timing of stock repurchases will be based on various factors, such as the Board’s assessment of the Company’s capital structure and liquidity, the amount of interest shown by shareholders in selling shares of stock to the Company at their appraised value, and applicable regulatory, legal and accounting factors. The Company has purchased 912,841 shares of its common stock in privately negotiated transactions from August 1, 2005 through March 31, 2016 . Of these 912,841 shares, 35,252 shares were purchased during the quarter ended March 31, 2016 , at an average price per share of $44.79 .

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Concentrations of credit risk : The Bank’s loans, commitments to extend credit, unused lines of credit and outstanding letters of credit have been granted to customers within the Bank's market area. Investments in securities issued by state and political subdivisions within the state of Iowa totaled approximately $91.98 million . The concentrations of credit by type of loan are set forth in Note 5 to the Consolidated Financial Statements. Outstanding letters of credit were granted primarily to commercial borrowers. Although the Bank has a diversified loan portfolio, a substantial portion of its debtors' ability to honor their contracts is dependent upon the economic conditions in Johnson, Linn and Washington Counties, Iowa. Contingencies : In the normal course of business, the Company and Bank are involved in various legal proceedings. While the ultimate outcome of such legal proceedings cannot be predicted with certainty, after reviewing pending and threatened litigation with counsel, management believes at this time that the outcome of such litigation will not have a material adverse effect on the Company's business, financial condition or results of operations. Financial instruments with off-balance sheet risk : The Bank is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, credit card participations and standby letters of credit. These instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the consolidated balance sheets. The Bank’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit, credit card participations and standby letters of credit is represented by the contractual amount of those instruments. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. A summary of the Bank’s commitments at March 31, 2016 and December 31, 2015 is as follows: March 31, 2016 December 31, 2015 (Amounts In Thousands) Firm loan commitments and unused portion of lines of credit: Home equity loans $ 46,610 $ 44,376 Credit cards 43,260 41,518 Commercial, real estate and home construction 100,509 98,613 Commercial lines and real estate purchase loans 177,287 160,095 Outstanding letters of credit 12,293 11,718

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Federal income tax expense for the three months ended March 31, 2016 and 2015 was computed using the consolidated effective federal tax rate. The Company also recognized income tax expense pertaining to state franchise taxes payable individually by the subsidiary bank. The Company files a consolidated tax return for federal purposes and separate tax returns for State of Iowa purposes. The tax years ended December 31, 2015, 2014, and 2013 remain subject to examination by the Internal Revenue Service. For state tax purposes, the tax years ended December 31, 2015, 2014, and 2013 remain open for examination. There were no material unrecognized tax benefits at March 31, 2016 and December 31, 2015 and therefore no interest or penalties on unrecognized tax benefits has been recorded. As of March 31, 2016 , the Company does not anticipate any significant increase in unrecognized tax benefits during the twelve-month period ending March 31, 2016 . Income taxes as a percentage of income before taxes were 29.65% for the three months ended March 31, 2016 and 29.26% for the same period in 2015 . The increase in the effective tax rate is due to a decrease in the amount of low-income housing tax credits earned by the Company in 2016 .

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments In the normal course of business, the Bank may use derivative financial instruments to manage its interest rate risk. These instruments carry varying degrees of credit, interest rate and market or liquidity risks. Derivative instruments are recognized as either assets or liabilities in the accompanying financial statement and are measured at fair value. The Bank’s objectives are to add stability to its net interest margin and to manage its exposure to movements in interest rates. The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amount to be exchanged between the counterparties. The Bank is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. The Bank minimizes this risk by entering into derivative contracts with large, stable financial institutions. The Bank has not experienced any losses from nonperformance by counterparties. The Bank monitors counterparty risk in accordance with the provisions of ASC 815. In addition, the Bank’s interest rate-related derivative instruments contain language outlining collateral pledging requirements for each counterparty. Collateral must be posted when the market value exceeds certain threshold limits which are determined by credit ratings of each counterparty. The Bank was required to pledge $5.93 million of collateral as of March 31, 2016 . Cash Flow Hedges: The Bank executed two forward-starting interest rate swap transactions on November 7, 2013. One of the interest rate swap transactions had an effective date of November 9, 2015, and an expiration date of November 9, 2020, effectively converting $25.00 million of variable rate debt to fixed rate debt. The other interest rate swap transaction has an effective date of November 7, 2016 and an expiration date of November 7, 2023, also to effectively convert $25.00 million of variable rate debt to fixed rate debt. For accounting purposes, these swap transactions are designated as a cash flow hedge of the changes in cash flows attributable to changes in three-month LIBOR, the benchmark interest rate being hedged, associated with the interest payments made on an amount of the Bank’s debt principal equal to the then-outstanding swap notional amount. At inception, the Bank asserted that the underlying principal balance would remain outstanding throughout the hedge transaction making it probable that sufficient LIBOR-based interest payments would exist through the maturity date of the swaps. The table below identifies the balance sheet category and fair values of the Bank’s derivative instruments designated as cash flow hedges as of March 31, 2016 and December 31, 2015 : Notional Amount Fair Value Balance Sheet Category Maturity (Amounts in Thousands) March 31, 2016 Interest rate swap $ 25,000 $ (2,073 ) Other Liabilities 11/9/2020 Interest rate swap 25,000 (3,860 ) Other Liabilities 11/7/2023 December 31, 2015 Interest rate swap $ 25,000 $ (1,501 ) Other Liabilities 11/9/2020 Interest rate swap 25,000 (2,679 ) Other Liabilities 11/7/2023 The table below identifies the gains and losses recognized on the Bank’s derivative instruments designated as cash flow hedges as of March 31, 2016 and December 31, 2015 : Effective Portion Ineffective Portion Recognized in OCI Reclassifed from AOCI into Income Recognized in Income on Derivatives Amount of Gain (Loss) Category Amount of Gain (Loss) Category Amount of Gain (Loss) (Amounts in Thousands) March 31, 2016 Interest rate swap $ (353 ) Interest Expense $ — Other Income $ — Interest rate swap (730 ) Interest Expense — Other Income — December 31, 2015 Interest rate swap $ (394 ) Interest Expense $ — Other Income $ — Interest rate swap (461 ) Interest Expense — Other Income —

Summary of Significant Accoun19

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial reporting and with instructions for Form 10-Q and Regulation S-X. These financial statements include all adjustments (consisting of normal recurring accruals) which in the opinion of management are considered necessary for the fair presentation of the financial position and results of operations for the periods shown. Certain prior year amounts have been reclassified to conform to the current year presentation. The Company considers that it operates as one business segment, a commercial bank. Operating results for the three month period ended March 31, 2016 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2016. For further information, refer to the consolidated financial statements and footnotes thereto included in the Form 10-K Annual Report of Hills Bancorporation and subsidiary (the “Company”) for the year ended December 31, 2015 filed with the Securities Exchange Commission on March 9, 2016 . The consolidated balance sheet as of December 31, 2015 , has been derived from the audited consolidated financial statements for that period. The Company evaluated subsequent events through the filing date of its quarterly report on Form 10-Q with the SEC.
Effect of New Financial Accounting Standards	In May 2014, the FASB and International Accounting Standards Board (IASB) issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). The core principle of ASU 2014-09 is that a company should recognize revenue to depict the transfer of promised good or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods and services. For financial institutions, significant changes are not expected given that most financial instruments are not in the scope of the accounting standard update. ASU 2014-09 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2016. In August 2015, FASB issued ASU 2015-14 deferring the effective date for annual periods and interim periods within those annual periods after December 15, 2017. Earlier application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. The Company is currently reviewing the provisions of this standard to determine the application to financial institutions. In February 2015, the FASB issued ASU No. 2015-02 (Topic 810), Consolidation . The ASU modifies the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIE) or voting interest entities (VOE). The standard relaxes existing criteria for determining when fees paid to a decision maker or service provider do not represent a variable interest by focusing on whether those fees are "at market". The ASU eliminates both the consolidation model specific to limited partnerships and the current presumption that a general partner controls a limited partnership. For public companies, ASU 2015-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. The Company adopted the accounting standard for the period ending March 31, 2016 and have changed the accounting for its tax credit limited partnership investments to the equity method. The impact of the change was determined to not be material. In April 2015, the FASB issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30), Simplifying the Presentation of Debt Issuance Costs. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this update. For public companies, ASU 2015-03 is effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption is permitted. The Company adopted ASU 2015-03 for the period ending March 31, 2016. There was no material impact on the financial statements. In April 2015, the FASB issued ASU No. 2015-05, Intangibles – Goodwill and Other Internal-Use Software (Subtopic 350-40), Customer's Accounting for Fees Paid in a Cloud Computing Arrangement. ASU 2015-05 provides guidance to customers about whether a cloud computing arrangement includes a software license. If it does, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. ASU 2015-05 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015. The adoption of ASU 2015-05 by the Company did not have a material impact. In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 created Subtopic 321-10, Investments-Equity Securities which is applicable to all entities except those in industries that account for substantially all investments at fair value through earnings or the change in net assets. Under this new subtopic, equity securities are generally required to be measured at fair value with unrealized holding gains and losses reflected in net income. ASU 2016-01 is effective for annual periods and interim periods within those annual periods beginning after December 15, 2017. The adoption of ASU 2016-01 by the Company is not expected to have a material impact. In February 2016, the FASB issued ASU No. 2016-02 (Topic 842), Leases . The ASU provides guidance requiring lessees to recognize right-of-use assets and lease liabilities for all leases other than those that meet the definition of short-term leases. For short-term leases, lessees may elect an accounting policy by class of underlying asset under which these assets and liabilities are not recognized and lease payments are generally recognized over the lease term on a straight-line basis. Under this new ASU, lessees will recognize right-of use assets and lease liabilities for most leases currently accounted for as operating leases under generally accepted accounting principles. For public companies, ASU 2016-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The adoption of ASU 2016-02 by the Company is not expected to have a material impact. In March 2016, the FASB issued ASU No. 2016-04, Liabilities - Extinguishments of Liabilities (Subtopic 405-20), Recognition of Breakage for Certain Prepaid Stored-Value Products . ASU 2016-04 applies to all entities that offer certain prepaid stored - value products. The ASU provides guidance for the derecognition of financial liabilities related to the issuance of these products and aligns the recognition of breakage to current authoritative guidance. For public companies, ASU 2016-04 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. The adoption of ASU 2016-04 by the Company is not expected to have a material impact. In March 2016, the FASB issued ASU No. 2016-09, Compensation - Stock Compensation (Topic 718), Improvements to Employee Share-Based Payment Accounting . The ASU simplifies several aspects of the accounting for share-based payment transaction, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. For public companies, ASU 2016-09 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2016. The Company is currently reviewing the provisions of this standard to determine the impact on the Company's financial statements.
Earnings Per Share	Basic earnings per share is computed using the weighted average number of actual common shares outstanding during the period. Diluted earnings per share reflects the potential dilution that would occur from the exercise of common stock options outstanding. ESOP shares are considered outstanding for this calculation unless unearned.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2016
Earnings Per Share [Abstract]
Schedule of computation of basic and diluted earnings per share	The computation of basic and diluted earnings per share for the periods presented is as follows: Three Months Ended March 31, 2016 2015 Common shares outstanding at the beginning of the period 9,322,054 9,380,432 Weighted average number of net shares redeemed (14,370 ) (17,136 ) Weighted average shares outstanding (basic) 9,307,684 9,363,296 Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method 6,130 4,980 Weighted average number of shares (diluted) 9,313,814 9,368,276 Net income (In thousands) $ 7,700 $ 7,380 Earnings per share: Basic $ 0.83 $ 0.79 Diluted $ 0.83 $ 0.79

Other Comprehensive Income (L21

Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2016
Equity [Abstract]
Components of accumulated other comprehensive income (AOCI)	The following table summarizes the balances of each component of accumulated other comprehensive income (AOCI), included in stockholders’ equity, at March 31, 2016 and December 31, 2015 : March 31, 2016 December 31, 2015 (amounts in thousands) Net unrealized gain on available-for-sale securities $ 3,262 $ 2,244 Net unrealized loss on derivatives used for cash flow hedges (5,933 ) (4,180 ) Tax effect $ 1,021 $ 741 Net-of-tax amount $ (1,650 ) $ (1,195 )

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Carrying values of investment securities	The carrying values of investment securities at March 31, 2016 and December 31, 2015 are summarized in the following table (dollars in thousands): March 31, 2016 December 31, 2015 Amount Percent Amount Percent Securities available for sale U.S. Treasury $ 25,175 9.54 % $ 24,978 9.45 % Other securities (FHLB, FHLMC and FNMA) 62,258 23.59 65,328 24.72 State and political subdivisions 176,478 66.87 173,929 65.83 Total securities available for sale $ 263,911 100.00 % $ 264,235 100.00 %
Carrying amount of available-for-sale securities and approximate fair values	The carrying amount of available-for-sale securities and their approximate fair values were as follows as of March 31, 2016 and December 31, 2015 (in thousands): Amortized Cost Gross Unrealized Gains Gross Unrealized (Losses) Estimated Fair Value March 31, 2016: U.S. Treasury $ 24,905 $ 270 $ — $ 25,175 Other securities (FHLB, FHLMC and FNMA) 61,980 292 (14 ) 62,258 State and political subdivisions 173,764 2,815 (101 ) 176,478 Total $ 260,649 $ 3,377 $ (115 ) $ 263,911 December 31, 2015: U.S. Treasury $ 24,893 $ 92 $ (7 ) $ 24,978 Other securities (FHLB, FHLMC and FNMA) 65,400 81 (153 ) 65,328 State and political subdivisions 171,698 2,375 (144 ) 173,929 Total $ 261,991 $ 2,548 $ (304 ) $ 264,235
Available-for-sale securities classified as per contractual maturities	The amortized cost and estimated fair value of available-for-sale securities classified according to their contractual maturities at March 31, 2016 , were as follows (in thousands): Amortized Cost Fair Value Due in one year or less $ 41,343 $ 41,412 Due after one year through five years 149,479 151,349 Due after five years through ten years 67,533 68,847 Due over ten years 2,294 2,303 Total $ 260,649 $ 263,911
Available-for-sale securities, continuous unrealized loss position, fair value	The following table shows the fair value, gross unrealized losses and the percentage of fair value represented by gross unrealized losses of applicable investment securities owned by the Company, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2016 and December 31, 2015 (in thousands): Less than 12 months 12 months or more Total March 31, 2016 # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % U.S. Treasury — $ — $ — — % — $ — $ — — % — $ — $ — — % Other securities (FHLB, FHLMC and FNMA) 4 8,924 (14 ) 0.16 — — — — 4 8,924 (14 ) 0.16 State and political subdivisions 44 11,020 (73 ) 0.66 14 2,650 (28 ) 1.06 58 13,670 (101 ) 0.74 Total temporarily impaired securities 48 $ 19,944 $ (87 ) 0.44 % 14 $ 2,650 $ (28 ) 1.06 % 62 $ 22,594 $ (115 ) 0.51 % Less than 12 months 12 months or more Total December 31, 2015 # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % U.S. Treasury 3 $ 7,455 $ (7 ) 0.09 % — $ — $ — — % 3 $ 7,455 $ (7 ) 0.09 % Other securities (FHLB, FHLMC and FNMA) 15 36,830 (153 ) 0.42 — — — — 15 36,830 (153 ) 0.42 State and political subdivisions 56 13,557 (70 ) 0.52 27 5,633 (74 ) 1.31 83 19,190 (144 ) 0.75 Total temporarily impaired securities 74 $ 57,842 $ (230 ) 0.40 % 27 $ 5,633 $ (74 ) 1.31 % 101 $ 63,475 $ (304 ) 0.48 %

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2016
Receivables [Abstract]
Schedule of classes of loans	Classes of loans are as follows: March 31, December 31, (Amounts In Thousands) Agricultural $ 90,620 $ 101,588 Commercial and financial 173,736 184,199 Real estate: Construction, 1 to 4 family residential 58,293 51,346 Construction, land development and commercial 105,607 83,121 Mortgage, farmland 189,882 187,856 Mortgage, 1 to 4 family first liens 725,924 727,160 Mortgage, 1 to 4 family junior liens 118,115 117,873 Mortgage, multi-family 284,715 271,974 Mortgage, commercial 315,965 323,409 Loans to individuals 22,959 24,019 Obligations of state and political subdivisions 51,623 52,371 $ 2,137,439 $ 2,124,916 Net unamortized fees and costs 766 768 $ 2,138,205 $ 2,125,684 Less allowance for loan losses 27,130 26,510 $ 2,111,075 $ 2,099,174
Schedule of changes in allowance for loan losses	Changes in the allowance for loan losses, the allowance for loan losses applicable to impaired loans and the related loan balance of impaired loans for the three months ended March 31, 2016 were as follows: Three Months Ended March 31, 2016 Agricultural Commercial and Financial Real Estate: Construction and land development Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family Real Estate: Mortgage, multi- family and commercial Other Total (Amounts In Thousands) Allowance for loan losses: Beginning balance $ 3,082 $ 4,517 $ 2,280 $ 3,342 $ 8,172 $ 4,223 $ 894 $ 26,510 Charge-offs — (55 ) — (10 ) (344 ) (66 ) (169 ) (644 ) Recoveries 142 253 52 — 213 11 44 715 Provision (270 ) (404 ) 427 612 (5 ) 22 167 549 Ending balance $ 2,954 $ 4,311 $ 2,759 $ 3,944 $ 8,036 $ 4,190 $ 936 $ 27,130 Ending balance, individually evaluated for impairment $ 868 $ 268 $ 32 $ 670 $ 310 $ 88 $ 22 $ 2,258 Ending balance, collectively evaluated for impairment $ 2,086 $ 4,043 $ 2,727 $ 3,274 $ 7,726 $ 4,102 $ 914 $ 24,872 Loans: Ending balance $ 90,620 $ 173,736 $ 163,900 $ 189,882 $ 844,039 $ 600,680 $ 74,582 $ 2,137,439 Ending balance, individually evaluated for impairment $ 12,647 $ 2,406 $ 1,450 $ 8,098 $ 5,594 $ 3,649 $ 22 $ 33,866 Ending balance, collectively evaluated for impairment $ 77,973 $ 171,330 $ 162,450 $ 181,784 $ 838,445 $ 597,031 $ 74,560 $ 2,103,573 Changes in the allowance for loan losses for the three months ended March 31, 2015 were as follows: Three Months Ended March 31, 2015 Agricultural Commercial and Financial Real Estate: Construction and land development Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family Real Estate: Mortgage, multi- family and commercial Other Total (Amounts In Thousands) Allowance for loan losses: Beginning balance $ 2,515 $ 4,231 $ 2,241 $ 2,672 $ 7,419 $ 4,195 $ 747 $ 24,020 Charge-offs (43 ) (66 ) (84 ) — (347 ) (179 ) (48 ) (767 ) Recoveries 82 401 151 6 413 70 46 1,169 Provision (10 ) (208 ) (58 ) 99 (29 ) 39 105 (62 ) Ending balance $ 2,544 $ 4,358 $ 2,250 $ 2,777 $ 7,456 $ 4,125 $ 850 $ 24,360 Ending balance, individually evaluated for impairment $ 13 $ 7 $ 33 $ 26 $ 68 $ 8 $ — $ 155 Ending balance, collectively evaluated for impairment $ 2,531 $ 4,351 $ 2,217 $ 2,751 $ 7,388 $ 4,117 $ 850 $ 24,205 Loans: Ending balance $ 88,574 $ 180,392 $ 126,544 $ 169,058 $ 788,782 $ 564,657 $ 76,163 $ 1,994,170 Ending balance, individually evaluated for impairment $ 1,851 $ 2,284 $ 954 $ 2,464 $ 3,559 $ 9,536 $ — $ 20,648 Ending balance, collectively evaluated for impairment $ 86,723 $ 178,108 $ 125,590 $ 166,594 $ 785,223 $ 555,121 $ 76,163 $ 1,973,522
Schedule of credit quality indicators by type of loans	The following table presents the credit quality indicators by type of loans in each category as of March 31, 2016 and December 31, 2015 , respectively (amounts in thousands): Agricultural Commercial and Financial Real Estate: Construction, 1 to 4 family residential Real Estate: Construction, land development and commercial March 31, 2016 Grade: Excellent $ 1,773 $ 3,050 $ — $ 255 Good 18,163 27,861 2,771 12,653 Satisfactory 34,358 101,014 37,546 70,736 Monitor 17,368 25,804 11,144 15,110 Special Mention 4,534 11,664 5,768 6,392 Substandard 14,424 4,343 1,064 461 Total $ 90,620 $ 173,736 $ 58,293 $ 105,607 Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family first liens Real Estate: Mortgage, 1 to 4 family junior liens Real Estate: Mortgage, multi- family March 31, 2016 Grade: Excellent $ 2,517 $ 563 $ — $ 6,560 Good 33,497 14,525 2,654 67,078 Satisfactory 115,190 622,556 107,567 175,070 Monitor 26,787 53,133 4,227 30,733 Special Mention 2,261 16,510 1,867 4,700 Substandard 9,630 18,637 1,800 574 Total $ 189,882 $ 725,924 $ 118,115 $ 284,715 Real Estate: Mortgage, commercial Loans to individuals Obligations of state and political subdivisions Total March 31, 2016 Grade: Excellent $ 15,990 $ — $ 2,346 $ 33,054 Good 80,891 92 36,454 296,639 Satisfactory 183,139 22,205 12,287 1,481,668 Monitor 26,456 237 518 211,517 Special Mention 5,522 209 18 59,445 Substandard 3,967 216 — 55,116 Total $ 315,965 $ 22,959 $ 51,623 $ 2,137,439 Agricultural Commercial and Financial Real Estate: Construction, 1 to 4 family residential Real Estate: Construction, land development and commercial December 31, 2015 Grade: Excellent $ 1,786 $ 3,298 $ — $ 260 Good 15,959 38,764 1,898 11,570 Satisfactory 36,819 102,188 34,357 52,731 Monitor 18,064 27,181 8,684 11,550 Special Mention 25,356 8,231 5,842 6,542 Substandard 3,604 4,537 565 468 Total $ 101,588 $ 184,199 $ 51,346 $ 83,121 Real Estate: Mortgage, farmland Real Estate: Mortgage, 1 to 4 family first liens Real Estate: Mortgage, 1 to 4 family junior liens Real Estate: Mortgage, multi- family December 31, 2015 Grade: Excellent $ 2,559 $ 426 $ — $ 6,651 Good 31,186 15,773 2,992 64,002 Satisfactory 112,038 620,731 107,091 166,193 Monitor 27,304 55,499 4,198 29,732 Special Mention 11,181 16,237 1,846 4,873 Substandard 3,588 18,494 1,746 523 Total $ 187,856 $ 727,160 $ 117,873 $ 271,974 Real Estate: Mortgage, commercial Loans to individuals Obligations of state and political subdivisions Total December 31, 2015 Grade: Excellent $ 12,484 $ — $ 2,365 $ 29,829 Good 81,305 70 37,045 300,564 Satisfactory 187,728 23,197 12,425 1,455,498 Monitor 32,141 285 518 215,156 Special Mention 6,183 198 — 86,489 Substandard 3,568 269 18 37,380 Total $ 323,409 $ 24,019 $ 52,371 $ 2,124,916
Schedule of past due loans	Past due loans as of March 31, 2016 and December 31, 2015 were as follows: 30 - 59 Days Past Due 60 - 89 Days Past Due 90 Days or More Past Due Total Past Due Current Total Loans Receivable Accruing Loans Past Due 90 Days or More (Amounts In Thousands) March 31, 2016 Agricultural $ 7,275 $ 149 $ 1,264 $ 8,688 $ 81,932 $ 90,620 $ 283 Commercial and financial 697 1,074 1,158 2,929 170,807 173,736 50 Real estate: Construction, 1 to 4 family residential 767 — 173 940 57,353 58,293 — Construction, land development and commercial 1,145 121 — 1,266 104,341 105,607 — Mortgage, farmland 519 — — 519 189,363 189,882 — Mortgage, 1 to 4 family first liens 5,290 213 1,629 7,132 718,792 725,924 331 Mortgage, 1 to 4 family junior liens 131 50 49 230 117,885 118,115 — Mortgage, multi-family — 135 40 175 284,540 284,715 — Mortgage, commercial 426 474 173 1,073 314,892 315,965 — Loans to individuals 86 29 — 115 22,844 22,959 — Obligations of state and political subdivisions — — — — 51,623 51,623 — $ 16,336 $ 2,245 $ 4,486 $ 23,067 $ 2,114,372 $ 2,137,439 $ 664 December 31, 2015 Agricultural $ 3,064 $ 961 $ — $ 4,025 $ 97,563 $ 101,588 $ — Commercial and financial 854 71 1,312 2,237 181,962 184,199 — Real estate: Construction, 1 to 4 family residential — — 214 214 51,132 51,346 — Construction, land development and commercial — — 88 88 $ 83,033 83,121 — Mortgage, farmland 320 88 — 408 187,448 187,856 — Mortgage, 1 to 4 family first liens 4,526 1,192 2,085 7,803 $ 719,357 727,160 406 Mortgage, 1 to 4 family junior liens 250 13 110 373 117,500 117,873 — Mortgage, multi-family 135 — 113 248 $ 271,726 271,974 — Mortgage, commercial 1,033 — 331 1,364 322,045 323,409 61 Loans to individuals 158 40 — 198 $ 23,821 24,019 — Obligations of state and political subdivisions — — — — 52,371 52,371 — $ 10,340 $ 2,365 $ 4,253 $ 16,958 $ 2,107,958 $ 2,124,916 $ 467
Schedule of impaired loan information	Certain impaired loan information by loan type at March 31, 2016 and December 31, 2015 , was as follows: March 31, 2016 December 31, 2015 Non-accrual loans (1) Accruing loans past due 90 days or more TDR loans Non- accrual loans (1) Accruing loans past due 90 days or more TDR loans (Amounts In Thousands) (Amounts In Thousands) Agricultural $ 1,659 $ 283 $ 225 $ — $ — $ 1,710 Commercial and financial 1,493 50 863 1,498 — 612 Real estate: Construction, 1 to 4 family residential 173 — 1,016 214 — 473 Construction, land development and commercial 141 — 121 145 — 122 Mortgage, farmland 1,281 — 1,074 — — 2,233 Mortgage, 1 to 4 family first liens 3,677 331 1,356 3,845 406 1,369 Mortgage, 1 to 4 family junior liens 201 — 26 279 — 27 Mortgage, multi-family 367 — — 449 — — Mortgage, commercial 1,133 — 2,150 985 61 1,733 $ 10,125 $ 664 $ 6,831 $ 7,415 $ 467 $ 8,279 (1) There were $5.11 million and $2.31 million of TDR loans included within nonaccrual loans as of March 31, 2016 and December 31, 2015 , respectively.
Schedule of information for TDR loans	Below is a summary of information for TDR loans as of March 31, 2016 and December 31, 2015 : March 31, 2016 December 31, 2015 Number of contracts Recorded investment Commitments outstanding Number of contracts Recorded investment Commitments outstanding (Amounts In Thousands) (Amounts In Thousands) Agricultural 7 $ 1,666 $ 31 7 $ 1,710 $ 32 Commercial and financial 12 2,059 319 8 1,818 241 Real estate: Construction, 1 to 4 family residential 5 1,188 — 3 646 138 Construction, land development and commercial 1 121 — 1 122 — Mortgage, farmland 6 2,355 — 5 2,233 — Mortgage, 1 to 4 family first liens 13 1,557 — 13 1,575 — Mortgage, 1 to 4 family junior liens 2 33 93 2 36 — Mortgage, multi-family — — — 1 71 — Mortgage, commercial 13 2,965 — 10 2,381 — Loans to individuals — — — — — — 59 $ 11,944 $ 443 50 $ 10,592 $ 411 The following is a summary of TDR loans that were modified during the three months ended March 31, 2016 : Three Months Ended March 31, 2016 Number of contracts Pre-modification recorded investment Post-modification recorded investment (Amounts In Thousands) Agricultural — $ — $ — Commercial and financial 4 349 349 Real estate: Construction, 1 to 4 family residential 2 543 543 Construction, land development and commercial — — — Mortgage, farmland 1 132 132 Mortgage, 1 to 4 family first lien — — — Mortgage, 1 to 4 family junior liens — — — Mortgage, multi-family — — — Mortgage, commercial 3 629 629 10 $ 1,653 $ 1,653
Schedule of impaired loans	Information regarding impaired loans as of and for the three months ended March 31, 2016 is as follows: March 31, 2016 Three Months Ended Recorded Investment Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized With no related allowance recorded: (Amounts In Thousands) Agricultural $ 126 $ 278 $ — $ 133 $ 2 Commercial and financial 1,552 2,275 — 1,574 6 Real estate: Construction, 1 to 4 family residential 739 739 — 739 8 Construction, land development and commercial 206 293 — 208 1 Mortgage, farmland 527 645 — 530 6 Mortgage, 1 to 4 family first liens 3,633 4,507 — 3,668 13 Mortgage, 1 to 4 family junior liens 150 450 — 157 — Mortgage, multi-family 151 262 — 190 — Mortgage, commercial 2,409 3,673 — 2,416 20 Loans to individuals — 20 — — — $ 9,493 $ 13,142 $ — $ 9,615 $ 56 With an allowance recorded: Agricultural $ 12,521 $ 12,524 $ 868 $ 12,570 $ 140 Commercial and financial 854 880 268 907 7 Real estate: Construction, 1 to 4 family residential 449 461 20 449 3 Construction, land development and commercial 56 57 12 56 — Mortgage, farmland 7,571 7,571 670 7,578 83 Mortgage, 1 to 4 family first liens 1,733 1,846 294 1,762 6 Mortgage, 1 to 4 family junior liens 78 233 16 80 — Mortgage, multi-family 216 221 46 218 — Mortgage, commercial 873 906 42 880 9 Loans to individuals 22 22 22 36 1 $ 24,373 $ 24,721 $ 2,258 $ 24,536 $ 249 Total: Agricultural $ 12,647 $ 12,802 $ 868 $ 12,703 $ 142 Commercial and financial 2,406 3,155 268 2,481 13 Real estate: Construction, 1 to 4 family residential 1,188 1,200 20 1,188 11 Construction, land development and commercial 262 350 12 264 1 Mortgage, farmland 8,098 8,216 670 8,108 89 Mortgage, 1 to 4 family first liens 5,366 6,353 294 5,430 19 Mortgage, 1 to 4 family junior liens 228 683 16 237 — Mortgage, multi-family 367 483 46 408 — Mortgage, commercial 3,282 4,579 42 3,296 29 Loans to individuals 22 42 22 36 1 $ 33,866 $ 37,863 $ 2,258 $ 34,151 $ 305 Information regarding impaired loans as of December 31, 2015 is as follows: Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded: (Amounts In Thousands) Agricultural $ 1,609 $ 1,773 $ — Commercial and financial 1,263 1,981 — Real estate: Construction, 1 to 4 family residential 238 238 — Construction, land development and commercial 210 314 — Mortgage, farmland 2,233 2,351 — Mortgage, 1 to 4 family first liens 3,558 4,419 — Mortgage, 1 to 4 family junior liens 189 500 — Mortgage, multi-family 157 226 — Mortgage, commercial 1,831 3,018 — Loans to individuals — 20 — $ 11,288 $ 14,840 $ — With an allowance recorded: Agricultural $ 101 $ 101 $ 1 Commercial and financial 847 847 324 Real estate: Construction, 1 to 4 family residential 449 461 9 Construction, land development and commercial 57 58 13 Mortgage, farmland — — — Mortgage, 1 to 4 family first liens 2,062 2,156 306 Mortgage, 1 to 4 family junior liens 117 270 20 Mortgage, multi-family 292 332 58 Mortgage, commercial 948 1,030 52 Loans to individuals 100 100 100 $ 4,973 $ 5,355 $ 883 Total: Agricultural $ 1,710 $ 1,874 $ 1 Commercial and financial 2,110 2,828 324 Real estate: Construction, 1 to 4 family residential 687 699 9 Construction, land development and commercial 267 372 13 Mortgage, farmland 2,233 2,351 — Mortgage, 1 to 4 family first liens 5,620 6,575 306 Mortgage, 1 to 4 family junior liens 306 770 20 Mortgage, multi-family 449 558 58 Mortgage, commercial 2,779 4,048 52 Loans to individuals 100 120 100 $ 16,261 $ 20,195 $ 883

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Carrying value and estimated fair values of entity's financial instruments	The carrying value and estimated fair values of the Company's financial instruments as of March 31, 2016 are as follows: March 31, 2016 Carrying Amount Estimated Fair Value Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 135,553 $ 135,553 $ 135,553 $ — $ — Investment securities 276,535 276,535 — 276,535 — Loans held for sale 4,571 4,571 — 4,571 — Loans Agricultural 87,666 87,695 — — 87,695 Commercial and financial 169,425 169,412 — — 169,412 Real estate: Construction, 1 to 4 family residential 57,302 57,303 — — 57,303 Construction, land development and commercial 103,839 103,842 — — 103,842 Mortgage, farmland 185,938 186,148 — — 186,148 Mortgage, 1 to 4 family first liens 719,119 716,974 — — 716,974 Mortgage, 1 to 4 family junior liens 116,884 122,408 — — 122,408 Mortgage, multi-family 282,957 285,700 — — 285,700 Mortgage, commercial 313,533 312,448 — — 312,448 Loans to individuals 22,410 22,400 — — 22,400 Obligations of state and political subdivisions 51,236 50,461 — — 50,461 Accrued interest receivable 10,020 10,020 — 10,020 — Total financial instrument assets $ 2,536,988 $ 2,541,470 $ 135,553 $ 291,126 $ 2,114,791 Financial instrument liabilities Deposits Noninterest-bearing deposits $ 296,922 $ 296,922 $ — $ 296,922 $ — Interest-bearing deposits 1,682,659 1,684,108 — 1,684,108 — Other borrowings 45,381 45,381 — 45,381 — Federal Home Loan Bank borrowings 240,000 240,044 — 240,044 — Interest rate swaps 5,933 5,933 — 5,933 — Accrued interest payable 838 838 — 838 — Total financial instrument liabilities $ 2,271,733 $ 2,273,226 $ — $ 2,273,226 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 367,666 $ — $ — $ — $ — Letters of credit 12,293 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 379,959 $ — $ — $ — $ — (1) Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. The carrying value and estimated fair values of the Company's financial instruments as of December 31, 2015 are as follows: December 31, 2015 Carrying Amount Estimated Fair Value Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 35,427 $ 35,427 $ 35,427 $ — $ — Investment securities 276,069 276,069 — 276,069 — Loans held for sale 5,554 5,554 — 5,554 — Loans Agricultural 98,506 98,530 — — 98,530 Commercial and financial 179,682 179,649 — — 179,649 Real estate: Construction, 1 to 4 family residential 50,480 50,487 — — 50,487 Construction, land development and commercial 81,707 81,705 — — 81,705 Mortgage, farmland 184,514 184,640 — — 184,640 Mortgage, 1 to 4 family first liens 720,229 718,566 — — 718,566 Mortgage, 1 to 4 family junior liens 116,632 122,173 — — 122,173 Mortgage, multi-family 270,261 272,446 — — 272,446 Mortgage, commercial 320,899 319,090 — — 319,090 Loans to individuals 23,518 23,509 — — 23,509 Obligations of state and political subdivisions 51,978 51,073 — — 51,073 Accrued interest receivable 8,672 8,672 — 8,672 — Total financial instrument assets $ 2,424,128 $ 2,427,590 $ 35,427 $ 290,295 $ 2,101,868 Financial instrument liabilities: Deposits Noninterest-bearing deposits $ 314,968 $ 314,968 $ — $ 314,968 $ — Interest-bearing deposits 1,575,734 1,577,684 — 1,577,684 — Other borrowings 44,051 44,051 — 44,051 — Federal Home Loan Bank borrowings 225,000 226,157 — 226,157 — Interest rate swaps 4,180 4,180 4,180 Accrued interest payable 846 846 — 846 — Total financial instrument liabilities $ 2,164,779 $ 2,167,886 $ — $ 2,167,886 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 344,602 $ — $ — $ — $ — Letters of credit 11,718 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 356,320 $ — $ — $ — $ — (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
Schedule of assets and liabilities measured at fair value on a recurring basis	The table below represents the balances of assets and liabilities measured at fair value on a recurring basis: March 31, 2016 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Securities available for sale (Amounts In Thousands) U.S. Treasury $ — $ 25,175 $ — $ 25,175 State and political subdivisions — 176,478 — 176,478 Other securities (FHLB, FHLMC and FNMA) — 62,258 — 62,258 Derivative Financial Instruments Interest rate swaps $ — (5,933 ) $ — (5,933 ) Total $ — $ 257,978 $ — $ 257,978 December 31, 2015 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Securities available for sale (Amounts In Thousands) U.S. Treasury $ — $ 24,978 $ — $ 24,978 State and political subdivisions — 173,929 — 173,929 Other securities (FHLB, FHLMC and FNMA) — 65,328 — 65,328 Derivative Financial Instruments Interest rate swaps — (4,180 ) — (4,180 ) Total $ — $ 260,055 $ — $ 260,055 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
Schedule of assets measured at fair value on a nonrecurring basis	The following tables present the Company’s assets that are measured at fair value on a nonrecurring basis. March 31, 2016 Three Months Ended March 31, 2016 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Total Losses (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 1,937 $ 1,937 $ — Commercial and financial — — 1,438 1,438 20 Real Estate: Construction, 1 to 4 family residential — — 972 972 — Construction, land development and commercial — — 129 129 — Mortgage, farmland — — 1,959 1,959 — Mortgage, 1 to 4 family first liens — — 4,321 4,321 275 Mortgage, 1 to 4 family junior liens — — 212 212 — Mortgage, multi-family — — 321 321 — Mortgage, commercial — — 1,307 1,307 65 Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 12,596 $ 12,596 $ 360 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully-charged off is zero. (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets. Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis (continued) December 31, 2015 Year Ended December 31, 2015 Readily Available Market Prices(1) Observable Market Prices(2) Company Determined Market Prices(3) Total at Fair Value Total Losses (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 1,470 $ 1,470 $ 116 Commercial and financial — — 1,178 1,178 56 Real Estate: Construction, 1 to 4 family residential — — 482 482 161 Construction, land development and commercial — — 132 132 35 Mortgage, farmland — — 2,233 2,233 — Mortgage, 1 to 4 family first liens — — 4,487 4,487 529 Mortgage, 1 to 4 family junior liens — — 286 286 166 Mortgage, multi-family — — 391 391 38 Mortgage, commercial — — 1,152 1,152 140 Loans to individuals — — — — — Foreclosed assets (5) — — 100 100 69 Total $ — $ — $ 11,911 $ 11,911 $ 1,310 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully-charged off is zero. (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of banks commitments	A summary of the Bank’s commitments at March 31, 2016 and December 31, 2015 is as follows: March 31, 2016 December 31, 2015 (Amounts In Thousands) Firm loan commitments and unused portion of lines of credit: Home equity loans $ 46,610 $ 44,376 Credit cards 43,260 41,518 Commercial, real estate and home construction 100,509 98,613 Commercial lines and real estate purchase loans 177,287 160,095 Outstanding letters of credit 12,293 11,718

Derivative Financial Instrume26

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Identification of the balance sheet category and fair values of the derivative instruments designated as cash flow hedges	The table below identifies the balance sheet category and fair values of the Bank’s derivative instruments designated as cash flow hedges as of March 31, 2016 and December 31, 2015 : Notional Amount Fair Value Balance Sheet Category Maturity (Amounts in Thousands) March 31, 2016 Interest rate swap $ 25,000 $ (2,073 ) Other Liabilities 11/9/2020 Interest rate swap 25,000 (3,860 ) Other Liabilities 11/7/2023 December 31, 2015 Interest rate swap $ 25,000 $ (1,501 ) Other Liabilities 11/9/2020 Interest rate swap 25,000 (2,679 ) Other Liabilities 11/7/2023
Identification of the gains and losses recognized on the derivative instruments designated as cash flow hedges	The table below identifies the gains and losses recognized on the Bank’s derivative instruments designated as cash flow hedges as of March 31, 2016 and December 31, 2015 : Effective Portion Ineffective Portion Recognized in OCI Reclassifed from AOCI into Income Recognized in Income on Derivatives Amount of Gain (Loss) Category Amount of Gain (Loss) Category Amount of Gain (Loss) (Amounts in Thousands) March 31, 2016 Interest rate swap $ (353 ) Interest Expense $ — Other Income $ — Interest rate swap (730 ) Interest Expense — Other Income — December 31, 2015 Interest rate swap $ (394 ) Interest Expense $ — Other Income $ — Interest rate swap (461 ) Interest Expense — Other Income —

Summary of Significant Accoun27

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details)	3 Months Ended
	Mar. 31, 2016segment
Accounting Policies [Abstract]
Number of operating segments	1

Earnings Per Share (Details)

Earnings Per Share (Details) $ / shares in Units, $ in Thousands	Mar. 24, 2015	Mar. 31, 2016USD ($)$ / sharesshares	Mar. 31, 2015USD ($)$ / sharesshares	Dec. 31, 2015shares	Dec. 31, 2014shares
Earnings Per Share [Abstract]
Stock split	2
Summary of computation of basic and diluted earnings per share [Abstract]
Common shares outstanding at the beginning of the period (shares)				9,322,054	9,380,432
Weighted average number of net shares redeemed (shares)		(14,370)	(17,136)
Weighted average shares outstanding (basic) (shares)		9,307,684	9,363,296
Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method (shares)		6,130	4,980
Weighted average number of shares (diluted) (shares)		9,313,814	9,368,276
Net income (In thousands) | $		$ 7,700	$ 7,380
Earnings per share:
Basic (in dollars per share) | $ / shares		$ 0.83	$ 0.79
Diluted (in dollars per share) | $ / shares		$ 0.83	$ 0.79

Other Comprehensive Income (L29

Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income Loss [Line Items]
Tax effect	$ 1,021	$ 741
Net-of-tax amount	(1,650)	(1,195)
Unrealized gains on available-for-sale securities [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), before Tax	3,262	2,244
Net unrealized (loss) gain on derivatives used for cash flow hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated Other Comprehensive Income (Loss), before Tax	$ (5,933)	$ (4,180)

Securities (Details)

Securities (Details) $ in Thousands	Mar. 31, 2016USD ($)security	Dec. 31, 2015USD ($)security
Available-for-sale Securities [Abstract]
Securities available for sale	$ 263,911	$ 264,235
Securities available for sale, Percent	100.00%	100.00%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 260,649	$ 261,991
Gross Unrealized Gains	3,377	2,548
Gross Unrealized (Losses)	(115)	(304)
Estimated Fair Value	263,911	264,235
Amortized Cost [Abstract]
Due in one year or less	41,343
Due after one year through five years	149,479
Due after five years through ten years	67,533
Due over ten years	2,294
Amortized Cost	260,649
Fair Value [Abstract]
Due in one year or less	41,412
Due after one year through five years	151,349
Due after five years through ten years	68,847
Due over ten years	2,303
Fair Value	263,911	$ 264,235
Carrying value of investment securities pledged to collateralize short-term borrowings	$ 71,790
Less than 12 months [Abstract]
Number of securities | security	48	74
Fair Value	$ 19,944	$ 57,842
Unrealized Loss	$ (87)	$ (230)
Percentage	0.44%	0.40%
12 months or more [Abstract]
Number of securities | security	14	27
Fair Value	$ 2,650	$ 5,633
Unrealized Loss	$ (28)	$ (74)
Percentage	1.06%	1.31%
Total [Abstract]
Number of securities | security	62	101
Fair Value	$ 22,594	$ 63,475
Unrealized Loss	$ (115)	$ (304)
Percentage	0.51%	0.48%
U.S. Treasury [Member]
Available-for-sale Securities [Abstract]
Securities available for sale	$ 25,175	$ 24,978
Securities available for sale, Percent	9.54%	9.45%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 24,905	$ 24,893
Gross Unrealized Gains	270	92
Gross Unrealized (Losses)	0	(7)
Estimated Fair Value	25,175	24,978
Fair Value [Abstract]
Fair Value	$ 25,175	$ 24,978
Less than 12 months [Abstract]
Number of securities | security	0	3
Fair Value	$ 0	$ 7,455
Unrealized Loss	$ 0	$ (7)
Percentage	0.00%	0.09%
12 months or more [Abstract]
Number of securities | security	0	0
Fair Value	$ 0	$ 0
Unrealized Loss	$ 0	$ 0
Percentage	0.00%	0.00%
Total [Abstract]
Number of securities | security	0	3
Fair Value	$ 0	$ 7,455
Unrealized Loss	$ 0	$ (7)
Percentage	0.00%	0.09%
Other securities (FHLB, FHLMC and FNMA) [Member]
Available-for-sale Securities [Abstract]
Securities available for sale	$ 62,258	$ 65,328
Securities available for sale, Percent	23.59%	24.72%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 61,980	$ 65,400
Gross Unrealized Gains	292	81
Gross Unrealized (Losses)	(14)	(153)
Estimated Fair Value	62,258	65,328
Fair Value [Abstract]
Fair Value	$ 62,258	$ 65,328
Less than 12 months [Abstract]
Number of securities | security	4	15
Fair Value	$ 8,924	$ 36,830
Unrealized Loss	$ (14)	$ (153)
Percentage	0.16%	0.42%
12 months or more [Abstract]
Number of securities | security	0	0
Fair Value	$ 0	$ 0
Unrealized Loss	$ 0	$ 0
Percentage	0.00%	0.00%
Total [Abstract]
Number of securities | security	4	15
Fair Value	$ 8,924	$ 36,830
Unrealized Loss	$ (14)	$ (153)
Percentage	0.16%	0.42%
State and political subdivisions [Member]
Available-for-sale Securities [Abstract]
Securities available for sale	$ 176,478	$ 173,929
Securities available for sale, Percent	66.87%	65.83%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 173,764	$ 171,698
Gross Unrealized Gains	2,815	2,375
Gross Unrealized (Losses)	(101)	(144)
Estimated Fair Value	176,478	173,929
Fair Value [Abstract]
Fair Value	$ 176,478	$ 173,929
Less than 12 months [Abstract]
Number of securities | security	44	56
Fair Value	$ 11,020	$ 13,557
Unrealized Loss	$ (73)	$ (70)
Percentage	0.66%	0.52%
12 months or more [Abstract]
Number of securities | security	14	27
Fair Value	$ 2,650	$ 5,633
Unrealized Loss	$ (28)	$ (74)
Percentage	1.06%	1.31%
Total [Abstract]
Number of securities | security	58	83
Fair Value	$ 13,670	$ 19,190
Unrealized Loss	$ (101)	$ (144)
Percentage	0.74%	0.75%

Loans (Details)

Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Summary of classes of loans (abstract)
Loans and receivable	$ 2,137,439	$ 2,124,916	$ 1,994,170
Net unamortized fees and costs	766	768
Loans and receivable, gross	2,138,205	2,125,684
Less allowance for loan losses	27,130	26,510
Loans and receivable, net	2,111,075	2,099,174
Agricultural [Member]
Summary of classes of loans (abstract)
Loans and receivable	90,620	101,588	88,574
Commercial and financial [Member]
Summary of classes of loans (abstract)
Loans and receivable	173,736	184,199	180,392
Real Estate: Construction, 1 to 4 family residential [Member]
Summary of classes of loans (abstract)
Loans and receivable	58,293	51,346
Real Estate: Construction, land development and commercial [Member]
Summary of classes of loans (abstract)
Loans and receivable	105,607	83,121
Real Estate: Mortgage, farmland [Member]
Summary of classes of loans (abstract)
Loans and receivable	189,882	187,856	$ 169,058
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of classes of loans (abstract)
Loans and receivable	725,924	727,160
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of classes of loans (abstract)
Loans and receivable	118,115	117,873
Real Estate: Mortgage, multi-family [Member]
Summary of classes of loans (abstract)
Loans and receivable	284,715	271,974
Real Estate: Mortgage, commercial [Member]
Summary of classes of loans (abstract)
Loans and receivable	315,965	323,409
Loans to individuals [Member]
Summary of classes of loans (abstract)
Loans and receivable	22,959	24,019
Obligations of state and political subdivisions [Member]
Summary of classes of loans (abstract)
Loans and receivable	$ 51,623	$ 52,371

Loans, Allowance For Credit Los

Loans, Allowance For Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 26,510	$ 24,020
Charge-offs	(644)	(767)
Recoveries	715	1,169
Provision	549	(62)
Ending balance	26,510	24,020	$ 27,130	$ 26,510	$ 24,360
Ending balance, individually evaluated for impairment	2,258	155
Ending balance, collectively evaluated for impairment	24,872	24,205
Loan [Abstract]
Total Loans Receivable			2,137,439	2,124,916	1,994,170
Ending balance, individually evaluated for impairment	33,866	20,648
Ending balance, collectively evaluated for impairment	2,103,573	1,973,522
Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	3,082	2,515
Charge-offs	0	(43)
Recoveries	142	82
Provision	(270)	(10)
Ending balance	3,082	2,515	2,954	3,082	2,544
Ending balance, individually evaluated for impairment	868	13
Ending balance, collectively evaluated for impairment	2,086	2,531
Loan [Abstract]
Total Loans Receivable			90,620	101,588	88,574
Ending balance, individually evaluated for impairment	12,647	1,851
Ending balance, collectively evaluated for impairment	77,973	86,723
Commercial and Financial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	4,517	4,231
Charge-offs	(55)	(66)
Recoveries	253	401
Provision	(404)	(208)
Ending balance	4,517	4,231	4,311	4,517	4,358
Ending balance, individually evaluated for impairment	268	7
Ending balance, collectively evaluated for impairment	4,043	4,351
Loan [Abstract]
Total Loans Receivable			173,736	184,199	180,392
Ending balance, individually evaluated for impairment	2,406	2,284
Ending balance, collectively evaluated for impairment	171,330	178,108
Real Estate: Construction and land development [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,280	2,241
Charge-offs	0	(84)
Recoveries	52	151
Provision	427	(58)
Ending balance	2,280	2,241	2,759	2,280	2,250
Ending balance, individually evaluated for impairment	32	33
Ending balance, collectively evaluated for impairment	2,727	2,217
Loan [Abstract]
Total Loans Receivable			163,900		126,544
Ending balance, individually evaluated for impairment	1,450	954
Ending balance, collectively evaluated for impairment	162,450	125,590
Real Estate: Mortgage, farmland [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	3,342	2,672
Charge-offs	(10)	0
Recoveries	0	6
Provision	612	99
Ending balance	3,342	2,672	3,944	3,342	2,777
Ending balance, individually evaluated for impairment	670	26
Ending balance, collectively evaluated for impairment	3,274	2,751
Loan [Abstract]
Total Loans Receivable			189,882	187,856	169,058
Ending balance, individually evaluated for impairment	8,098	2,464
Ending balance, collectively evaluated for impairment	181,784	166,594
Real Estate: Mortgage, 1 to 4 family [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	8,172	7,419
Charge-offs	(344)	(347)
Recoveries	213	413
Provision	(5)	(29)
Ending balance	8,172	7,419	8,036	8,172	7,456
Ending balance, individually evaluated for impairment	310	68
Ending balance, collectively evaluated for impairment	7,726	7,388
Loan [Abstract]
Total Loans Receivable			844,039		788,782
Ending balance, individually evaluated for impairment	5,594	3,559
Ending balance, collectively evaluated for impairment	838,445	785,223
Real Estate: Mortgage, multi-family and commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	4,223	4,195
Charge-offs	(66)	(179)
Recoveries	11	70
Provision	22	39
Ending balance	4,223	4,195	4,190	4,223	4,125
Ending balance, individually evaluated for impairment	88	8
Ending balance, collectively evaluated for impairment	4,102	4,117
Loan [Abstract]
Total Loans Receivable			600,680		564,657
Ending balance, individually evaluated for impairment	3,649	9,536
Ending balance, collectively evaluated for impairment	597,031	555,121
Others [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	894	747
Charge-offs	(169)	(48)
Recoveries	44	46
Provision	167	105
Ending balance	894	747	936	$ 894	850
Ending balance, individually evaluated for impairment	22	0
Ending balance, collectively evaluated for impairment	914	850
Loan [Abstract]
Total Loans Receivable			$ 74,582		$ 76,163
Ending balance, individually evaluated for impairment	22	0
Ending balance, collectively evaluated for impairment	$ 74,560	$ 76,163

Loans, Credit Quality Indicator

Loans, Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	$ 2,137,439	$ 2,124,916	$ 1,994,170
Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	33,054	29,829
Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	296,639	300,564
Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	1,481,668	1,455,498
Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	211,517	215,156
Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	59,445	86,489
Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	55,116	37,380
Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	90,620	101,588	88,574
Agricultural [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	1,773	1,786
Agricultural [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	18,163	15,959
Agricultural [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	34,358	36,819
Agricultural [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	17,368	18,064
Agricultural [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	4,534	25,356
Agricultural [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	14,424	3,604
Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	173,736	184,199	180,392
Commercial and Financial [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	3,050	3,298
Commercial and Financial [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	27,861	38,764
Commercial and Financial [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	101,014	102,188
Commercial and Financial [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	25,804	27,181
Commercial and Financial [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	11,664	8,231
Commercial and Financial [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	4,343	4,537
Real Estate: Construction, 1 to 4 family residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	58,293	51,346
Real Estate: Construction, 1 to 4 family residential [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	0	0
Real Estate: Construction, 1 to 4 family residential [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	2,771	1,898
Real Estate: Construction, 1 to 4 family residential [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	37,546	34,357
Real Estate: Construction, 1 to 4 family residential [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	11,144	8,684
Real Estate: Construction, 1 to 4 family residential [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	5,768	5,842
Real Estate: Construction, 1 to 4 family residential [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	1,064	565
Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	105,607	83,121
Real Estate: Construction, land development and commercial [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	255	260
Real Estate: Construction, land development and commercial [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	12,653	11,570
Real Estate: Construction, land development and commercial [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	70,736	52,731
Real Estate: Construction, land development and commercial [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	15,110	11,550
Real Estate: Construction, land development and commercial [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	6,392	6,542
Real Estate: Construction, land development and commercial [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	461	468
Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	189,882	187,856	$ 169,058
Real Estate: Mortgage, farmland [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	2,517	2,559
Real Estate: Mortgage, farmland [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	33,497	31,186
Real Estate: Mortgage, farmland [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	115,190	112,038
Real Estate: Mortgage, farmland [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	26,787	27,304
Real Estate: Mortgage, farmland [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	2,261	11,181
Real Estate: Mortgage, farmland [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	9,630	3,588
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	725,924	727,160
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	563	426
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	14,525	15,773
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	622,556	620,731
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	53,133	55,499
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	16,510	16,237
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	18,637	18,494
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	118,115	117,873
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	0	0
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	2,654	2,992
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	107,567	107,091
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	4,227	4,198
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	1,867	1,846
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	1,800	1,746
Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	284,715	271,974
Real Estate: Mortgage, multi-family [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	6,560	6,651
Real Estate: Mortgage, multi-family [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	67,078	64,002
Real Estate: Mortgage, multi-family [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	175,070	166,193
Real Estate: Mortgage, multi-family [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	30,733	29,732
Real Estate: Mortgage, multi-family [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	4,700	4,873
Real Estate: Mortgage, multi-family [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	574	523
Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	315,965	323,409
Real Estate: Mortgage, commercial [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	15,990	12,484
Real Estate: Mortgage, commercial [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	80,891	81,305
Real Estate: Mortgage, commercial [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	183,139	187,728
Real Estate: Mortgage, commercial [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	26,456	32,141
Real Estate: Mortgage, commercial [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	5,522	6,183
Real Estate: Mortgage, commercial [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	3,967	3,568
Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	22,959	24,019
Loans to individuals [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	0	0
Loans to individuals [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	92	70
Loans to individuals [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	22,205	23,197
Loans to individuals [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	237	285
Loans to individuals [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	209	198
Loans to individuals [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	216	269
Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	51,623	52,371
Obligations of state and political subdivisions [Member] | Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	2,346	2,365
Obligations of state and political subdivisions [Member] | Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	36,454	37,045
Obligations of state and political subdivisions [Member] | Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	12,287	12,425
Obligations of state and political subdivisions [Member] | Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	518	518
Obligations of state and political subdivisions [Member] | Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	18	0
Obligations of state and political subdivisions [Member] | Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Loans and receivable	$ 0	$ 18

Loans, Past Due Receivables (De

Loans, Past Due Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	$ 16,336	$ 10,340
60 - 89 Days Past Due	2,245	2,365
90 Days or More Past Due	4,486	4,253
Total Past Due	23,067	16,958
Current	2,114,372	2,107,958
Total Loans Receivable	2,137,439	2,124,916	$ 1,994,170
Accruing Loans Past Due 90 Days or More	664	467
Agricultural [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	7,275	3,064
60 - 89 Days Past Due	149	961
90 Days or More Past Due	1,264	0
Total Past Due	8,688	4,025
Current	81,932	97,563
Total Loans Receivable	90,620	101,588	88,574
Accruing Loans Past Due 90 Days or More	283	0
Commercial and Financial [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	697	854
60 - 89 Days Past Due	1,074	71
90 Days or More Past Due	1,158	1,312
Total Past Due	2,929	2,237
Current	170,807	181,962
Total Loans Receivable	173,736	184,199	180,392
Accruing Loans Past Due 90 Days or More	50	0
Real Estate: Construction, 1 to 4 family residential [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	767	0
60 - 89 Days Past Due	0	0
90 Days or More Past Due	173	214
Total Past Due	940	214
Current	57,353	51,132
Total Loans Receivable	58,293	51,346
Accruing Loans Past Due 90 Days or More	0	0
Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	1,145	0
60 - 89 Days Past Due	121	0
90 Days or More Past Due	0	88
Total Past Due	1,266	88
Current	104,341	83,033
Total Loans Receivable	105,607	83,121
Accruing Loans Past Due 90 Days or More	0	0
Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	519	320
60 - 89 Days Past Due	0	88
90 Days or More Past Due	0	0
Total Past Due	519	408
Current	189,363	187,448
Total Loans Receivable	189,882	187,856	$ 169,058
Accruing Loans Past Due 90 Days or More	0	0
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	5,290	4,526
60 - 89 Days Past Due	213	1,192
90 Days or More Past Due	1,629	2,085
Total Past Due	7,132	7,803
Current	718,792	719,357
Total Loans Receivable	725,924	727,160
Accruing Loans Past Due 90 Days or More	331	406
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	131	250
60 - 89 Days Past Due	50	13
90 Days or More Past Due	49	110
Total Past Due	230	373
Current	117,885	117,500
Total Loans Receivable	118,115	117,873
Accruing Loans Past Due 90 Days or More	0	0
Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	0	135
60 - 89 Days Past Due	135	0
90 Days or More Past Due	40	113
Total Past Due	175	248
Current	284,540	271,726
Total Loans Receivable	284,715	271,974
Accruing Loans Past Due 90 Days or More	0	0
Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	426	1,033
60 - 89 Days Past Due	474	0
90 Days or More Past Due	173	331
Total Past Due	1,073	1,364
Current	314,892	322,045
Total Loans Receivable	315,965	323,409
Accruing Loans Past Due 90 Days or More	0	61
Loans to individuals [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	86	158
60 - 89 Days Past Due	29	40
90 Days or More Past Due	0	0
Total Past Due	115	198
Current	22,844	23,821
Total Loans Receivable	22,959	24,019
Accruing Loans Past Due 90 Days or More	0	0
Obligations of state and political subdivisions [Member]
Schedule of past due loans [Abstract]
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	0	0
Current	51,623	52,371
Total Loans Receivable	51,623	52,371
Accruing Loans Past Due 90 Days or More	$ 0	$ 0

Loans, Impaired Financing Recei

Loans, Impaired Financing Receivable Loan Type (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Dec. 31, 2015
Summary of certain impaired loan information [Abstract]
Non-accrual loans	[1]	$ 10,125	$ 7,415
Accruing loans past due 90 days or more		664	467
TDR loans		6,831	8,279
Increase in accruing loans past due 90 days or more		200
Average 90 days or more past due loan balance		110	90
Agricultural [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	[1]	1,659	0
Accruing loans past due 90 days or more		283	0
TDR loans		225	1,710
Commercial and financial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	[1]	1,493	1,498
Accruing loans past due 90 days or more		50	0
TDR loans		863	612
Real Estate: Construction, 1 to 4 family residential [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	[1]	173	214
Accruing loans past due 90 days or more		0	0
TDR loans		1,016	473
Real Estate: Construction, land development and commercial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	[1]	141	145
Accruing loans past due 90 days or more		0	0
TDR loans		121	122
Real Estate: Mortgage, farmland [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	[1]	1,281	0
Accruing loans past due 90 days or more		0	0
TDR loans		1,074	2,233
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	[1]	3,677	3,845
Accruing loans past due 90 days or more		331	406
TDR loans		1,356	1,369
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	[1]	201	279
Accruing loans past due 90 days or more		0	0
TDR loans		26	27
Real Estate: Mortgage, multi-family [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	[1]	367	449
Accruing loans past due 90 days or more		0	0
TDR loans		0	0
Real Estate: Mortgage, commercial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	[1]	1,133	985
Accruing loans past due 90 days or more		0	61
TDR loans		2,150	1,733
Loans to individuals [Member]
Summary of certain impaired loan information [Abstract]
Accruing loans past due 90 days or more		0	0
Troubled Debt Restructuring [Member]
Summary of certain impaired loan information [Abstract]
TDR Loans included within nonaccrual loans		$ 5,110	$ 2,310
[1]	There were $5.11 million and $2.31 million of TDR loans included within nonaccrual loans as of March 31, 2016 and December 31, 2015, respectively.

Loans, Troubled Debt Restructur

Loans, Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016USD ($)contract	Dec. 31, 2015USD ($)contract
Summary of information for TDR loans [Abstract]
Number of contracts | contract	59	50
Recorded investment	$ 11,944	$ 10,592
Commitments outstanding	$ 443	411
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	10
Pre-modification recorded investment	$ 1,653
Post-modification recorded investment	1,653
Commitments to lend additional borrowings		410
TDR loans default payment	$ 0	$ 0
Agricultural [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	7	7
Recorded investment	$ 1,666	$ 1,710
Commitments outstanding	$ 31	$ 32
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Commercial and Financial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	12	8
Recorded investment	$ 2,059	$ 1,818
Commitments outstanding	$ 319	$ 241
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	4
Pre-modification recorded investment	$ 349
Post-modification recorded investment	$ 349
Real Estate: Construction, 1 to 4 family residential [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	5	3
Recorded investment	$ 1,188	$ 646
Commitments outstanding	$ 0	$ 138
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	2
Pre-modification recorded investment	$ 543
Post-modification recorded investment	$ 543
Real Estate: Construction, land development and commercial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	1	1
Recorded investment	$ 121	$ 122
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, farmland [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	6	5
Recorded investment	$ 2,355	$ 2,233
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	1
Pre-modification recorded investment	$ 132
Post-modification recorded investment	$ 132
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	13	13
Recorded investment	$ 1,557	$ 1,575
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	2	2
Recorded investment	$ 33	$ 36
Commitments outstanding	$ 93	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, multi-family [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	0	1
Recorded investment	$ 0	$ 71
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, commercial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	13	10
Recorded investment	$ 2,965	$ 2,381
Commitments outstanding	$ 0	$ 0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	3
Pre-modification recorded investment	$ 629
Post-modification recorded investment	$ 629
Loans to individuals [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	0	0
Recorded investment	$ 0	$ 0
Commitments outstanding	$ 0	$ 0

Loans, Impaired Financing Rec37

Loans, Impaired Financing Receivables Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Recorded Investment [Abstract]
With no related allowance recorded	$ 9,493	$ 11,288
With an allowance recorded	24,373	4,973
Total impaired loans	33,866	16,261
Unpaid Principal Balance [Abstract]
With no related allowance recorded	13,142	14,840
With an allowance recorded	24,721	5,355
Total	37,863	20,195
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	2,258	883
Total	2,258	$ 883
Average Recorded Investment [Abstract]
With no related allowance recorded	9,615
With an allowance recorded	24,536
Total	34,151
Interest Income Recognized [Abstract]
With no related allowance recorded	56
With an allowance recorded	249
Total	305
Impaired loans increase	$ 17,610
Percentages of impaired loans to loans held for investment (in hundredths)	1.58%	0.76%
Increase in nonaccrual loans	$ 2,710
Decrease in TDR Loans	$ 1,450
Prior period within which impairment is being measured	1 year
Number of period within which average appraisals obtained	1 month
Agricultural and Farmland Real Estate [Member]
Interest Income Recognized [Abstract]
Impaired loans increase	$ 16,220
Agricultural [Member]
Recorded Investment [Abstract]
With no related allowance recorded	126	$ 1,609
With an allowance recorded	12,521	101
Total impaired loans	12,647	1,710
Unpaid Principal Balance [Abstract]
With no related allowance recorded	278	1,773
With an allowance recorded	12,524	101
Total	12,802	1,874
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	868	1
Total	868	1
Average Recorded Investment [Abstract]
With no related allowance recorded	133
With an allowance recorded	12,570
Total	12,703
Interest Income Recognized [Abstract]
With no related allowance recorded	2
With an allowance recorded	140
Total	142
Commercial and Financial [Member]
Recorded Investment [Abstract]
With no related allowance recorded	1,552	1,263
With an allowance recorded	854	847
Total impaired loans	2,406	2,110
Unpaid Principal Balance [Abstract]
With no related allowance recorded	2,275	1,981
With an allowance recorded	880	847
Total	3,155	2,828
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	268	324
Total	268	324
Average Recorded Investment [Abstract]
With no related allowance recorded	1,574
With an allowance recorded	907
Total	2,481
Interest Income Recognized [Abstract]
With no related allowance recorded	6
With an allowance recorded	7
Total	13
Real Estate: Construction, 1 to 4 family residential [Member]
Recorded Investment [Abstract]
With no related allowance recorded	739	238
With an allowance recorded	449	449
Total impaired loans	1,188	687
Unpaid Principal Balance [Abstract]
With no related allowance recorded	739	238
With an allowance recorded	461	461
Total	1,200	699
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	20	9
Total	20	9
Average Recorded Investment [Abstract]
With no related allowance recorded	739
With an allowance recorded	449
Total	1,188
Interest Income Recognized [Abstract]
With no related allowance recorded	8
With an allowance recorded	3
Total	11
Real Estate: Construction, land development and commercial [Member]
Recorded Investment [Abstract]
With no related allowance recorded	206	210
With an allowance recorded	56	57
Total impaired loans	262	267
Unpaid Principal Balance [Abstract]
With no related allowance recorded	293	314
With an allowance recorded	57	58
Total	350	372
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	12	13
Total	12	13
Average Recorded Investment [Abstract]
With no related allowance recorded	208
With an allowance recorded	56
Total	264
Interest Income Recognized [Abstract]
With no related allowance recorded	1
With an allowance recorded	0
Total	1
Real Estate: Mortgage, farmland [Member]
Recorded Investment [Abstract]
With no related allowance recorded	527	2,233
With an allowance recorded	7,571	0
Total impaired loans	8,098	2,233
Unpaid Principal Balance [Abstract]
With no related allowance recorded	645	2,351
With an allowance recorded	7,571	0
Total	8,216	2,351
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	670	0
Total	670	0
Average Recorded Investment [Abstract]
With no related allowance recorded	530
With an allowance recorded	7,578
Total	8,108
Interest Income Recognized [Abstract]
With no related allowance recorded	6
With an allowance recorded	83
Total	89
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Recorded Investment [Abstract]
With no related allowance recorded	3,633	3,558
With an allowance recorded	1,733	2,062
Total impaired loans	5,366	5,620
Unpaid Principal Balance [Abstract]
With no related allowance recorded	4,507	4,419
With an allowance recorded	1,846	2,156
Total	6,353	6,575
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	294	306
Total	294	306
Average Recorded Investment [Abstract]
With no related allowance recorded	3,668
With an allowance recorded	1,762
Total	5,430
Interest Income Recognized [Abstract]
With no related allowance recorded	13
With an allowance recorded	6
Total	19
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Recorded Investment [Abstract]
With no related allowance recorded	150	189
With an allowance recorded	78	117
Total impaired loans	228	306
Unpaid Principal Balance [Abstract]
With no related allowance recorded	450	500
With an allowance recorded	233	270
Total	683	770
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	16	20
Total	16	20
Average Recorded Investment [Abstract]
With no related allowance recorded	157
With an allowance recorded	80
Total	237
Interest Income Recognized [Abstract]
With no related allowance recorded	0
With an allowance recorded	0
Total	0
Real Estate: Mortgage, multi-family [Member]
Recorded Investment [Abstract]
With no related allowance recorded	151	157
With an allowance recorded	216	292
Total impaired loans	367	449
Unpaid Principal Balance [Abstract]
With no related allowance recorded	262	226
With an allowance recorded	221	332
Total	483	558
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	46	58
Total	46	58
Average Recorded Investment [Abstract]
With no related allowance recorded	190
With an allowance recorded	218
Total	408
Interest Income Recognized [Abstract]
With no related allowance recorded	0
With an allowance recorded	0
Total	0
Real Estate: Mortgage, commercial [Member]
Recorded Investment [Abstract]
With no related allowance recorded	2,409	1,831
With an allowance recorded	873	948
Total impaired loans	3,282	2,779
Unpaid Principal Balance [Abstract]
With no related allowance recorded	3,673	3,018
With an allowance recorded	906	1,030
Total	4,579	4,048
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	42	52
Total	42	52
Average Recorded Investment [Abstract]
With no related allowance recorded	2,416
With an allowance recorded	880
Total	3,296
Interest Income Recognized [Abstract]
With no related allowance recorded	20
With an allowance recorded	9
Total	29
Loans to individuals [Member]
Recorded Investment [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	22	100
Total impaired loans	22	100
Unpaid Principal Balance [Abstract]
With no related allowance recorded	20	20
With an allowance recorded	22	100
Total	42	120
Related Allowance [Abstract]
With no related allowance recorded	0	0
With an allowance recorded	22	100
Total	22	$ 100
Average Recorded Investment [Abstract]
With no related allowance recorded	0
With an allowance recorded	36
Total	36
Interest Income Recognized [Abstract]
With no related allowance recorded	0
With an allowance recorded	1
Total	$ 1

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands		Mar. 31, 2016		Dec. 31, 2015
Readily Available Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents		$ 135,553	[1]	$ 35,427	[2]
Investment securities		0	[1]	0	[2]
Loans held for sale		0	[1]	0	[2]
Loans
Agricultural		0	[1]	0	[2]
Commercial and financial		0	[1]	0	[2]
Real estate:
Construction, 1 to 4 family residential		0	[1]	0	[2]
Construction, land development and commercial		0	[1]	0	[2]
Mortgage, farmland		0	[1]	0	[2]
Mortgage, 1 to 4 family first liens		0	[1]	0	[2]
Mortgage, 1 to 4 family junior liens		0	[1]	0	[2]
Mortgage, multi-family		0	[1]	0	[2]
Mortgage, commercial		0	[1]	0	[2]
Loans to individuals		0	[1]	0	[2]
Obligations of state and political subdivisions		0	[1]	0	[2]
Accrued interest receivable		0	[1]	0	[2]
Total financial instrument assets		135,553	[1]	35,427	[2]
Deposits
Noninterest-bearing deposits		0	[1]	0	[2]
Interest-bearing deposits		0	[1]	0	[2]
Other borrowings		0	[1]	0	[2]
Federal Home Loan Bank borrowings		0	[1]	0	[2]
Interest rate swaps	[1]	0
Accrued interest payable		0	[1]	0	[2]
Total financial instrument liabilities		0	[1]	0	[2]
Financial instrument with off-balance sheet risk:
Loan commitments		0	[1]	0	[2]
Letters of credit		0	[1]	0	[2]
Total financial instrument liabilities with off-balance-sheet risk		0	[1]	0	[2]
Observable Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents		0	[3]	0	[4]
Investment securities		276,535	[3]	276,069	[4]
Loans held for sale		4,571	[3]	5,554	[4]
Loans
Agricultural		0	[3]	0	[4]
Commercial and financial		0	[3]	0	[4]
Real estate:
Construction, 1 to 4 family residential		0	[3]	0	[4]
Construction, land development and commercial		0	[3]	0	[4]
Mortgage, farmland		0	[3]	0	[4]
Mortgage, 1 to 4 family first liens		0	[3]	0	[4]
Mortgage, 1 to 4 family junior liens		0	[3]	0	[4]
Mortgage, multi-family		0	[3]	0	[4]
Mortgage, commercial		0	[3]	0	[4]
Loans to individuals		0	[3]	0	[4]
Obligations of state and political subdivisions		0	[3]	0	[4]
Accrued interest receivable		10,020	[3]	8,672	[4]
Total financial instrument assets		291,126	[3]	290,295	[4]
Deposits
Noninterest-bearing deposits		296,922	[3]	314,968	[4]
Interest-bearing deposits		1,684,108	[3]	1,577,684	[4]
Other borrowings		45,381	[3]	44,051	[4]
Federal Home Loan Bank borrowings		240,044	[3]	226,157	[4]
Interest rate swaps		5,933	[3]	4,180
Accrued interest payable		838	[3]	846	[4]
Total financial instrument liabilities		2,273,226	[3]	2,167,886	[4]
Financial instrument with off-balance sheet risk:
Loan commitments		0	[3]	0	[4]
Letters of credit		0	[3]	0	[4]
Total financial instrument liabilities with off-balance-sheet risk		0	[3]	0	[4]
Company Determined Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents		0	[5]	0	[6]
Investment securities		0	[5]	0	[6]
Loans held for sale		0	[5]	0	[6]
Loans
Agricultural		87,695	[5]	98,530	[6]
Commercial and financial		169,412	[5]	179,649	[6]
Real estate:
Construction, 1 to 4 family residential		57,303	[5]	50,487	[6]
Construction, land development and commercial		103,842	[5]	81,705	[6]
Mortgage, farmland		186,148	[5]	184,640	[6]
Mortgage, 1 to 4 family first liens		716,974	[5]	718,566	[6]
Mortgage, 1 to 4 family junior liens		122,408	[5]	122,173	[6]
Mortgage, multi-family		285,700	[5]	272,446	[6]
Mortgage, commercial		312,448	[5]	319,090	[6]
Loans to individuals		22,400	[5]	23,509	[6]
Obligations of state and political subdivisions		50,461	[5]	51,073	[6]
Accrued interest receivable		0	[5]	0	[6]
Total financial instrument assets		2,114,791	[5]	2,101,868	[6]
Deposits
Noninterest-bearing deposits		0	[5]	0	[6]
Interest-bearing deposits		0	[5]	0	[6]
Other borrowings		0	[5]	0	[6]
Federal Home Loan Bank borrowings		0	[5]	0	[6]
Interest rate swaps	[5]	0
Accrued interest payable		0	[5]	0	[6]
Total financial instrument liabilities		0	[5]	0	[6]
Financial instrument with off-balance sheet risk:
Loan commitments		0	[5]	0	[6]
Letters of credit		0	[5]	0	[6]
Total financial instrument liabilities with off-balance-sheet risk		0	[5]	0	[6]
Carrying Amount [Member]
Financial instrument assets:
Cash and cash equivalents		135,553		35,427
Investment securities		276,535		276,069
Loans held for sale		4,571		5,554
Loans
Agricultural		87,666		98,506
Commercial and financial		169,425		179,682
Real estate:
Construction, 1 to 4 family residential		57,302		50,480
Construction, land development and commercial		103,839		81,707
Mortgage, farmland		185,938		184,514
Mortgage, 1 to 4 family first liens		719,119		720,229
Mortgage, 1 to 4 family junior liens		116,884		116,632
Mortgage, multi-family		282,957		270,261
Mortgage, commercial		313,533		320,899
Loans to individuals		22,410		23,518
Obligations of state and political subdivisions		51,236		51,978
Accrued interest receivable		10,020		8,672
Total financial instrument assets		2,536,988		2,424,128
Deposits
Noninterest-bearing deposits		296,922		314,968
Interest-bearing deposits		1,682,659		1,575,734
Other borrowings		45,381		44,051
Federal Home Loan Bank borrowings		240,000		225,000
Interest rate swaps		5,933		4,180
Accrued interest payable		838		846
Total financial instrument liabilities		2,271,733		2,164,779
Financial instrument with off-balance sheet risk:
Loan commitments		367,666		344,602
Letters of credit		12,293		11,718
Total financial instrument liabilities with off-balance-sheet risk		379,959		356,320
Estimated Fair Value [Member]
Financial instrument assets:
Cash and cash equivalents		135,553		35,427
Investment securities		276,535		276,069
Loans held for sale		4,571		5,554
Loans
Agricultural		87,695		98,530
Commercial and financial		169,412		179,649
Real estate:
Construction, 1 to 4 family residential		57,303		50,487
Construction, land development and commercial		103,842		81,705
Mortgage, farmland		186,148		184,640
Mortgage, 1 to 4 family first liens		716,974		718,566
Mortgage, 1 to 4 family junior liens		122,408		122,173
Mortgage, multi-family		285,700		272,446
Mortgage, commercial		312,448		319,090
Loans to individuals		22,400		23,509
Obligations of state and political subdivisions		50,461		51,073
Accrued interest receivable		10,020		8,672
Total financial instrument assets		2,541,470		2,427,590
Deposits
Noninterest-bearing deposits		296,922		314,968
Interest-bearing deposits		1,684,108		1,577,684
Other borrowings		45,381		44,051
Federal Home Loan Bank borrowings		240,044		226,157
Interest rate swaps		5,933		4,180
Accrued interest payable		838		846
Total financial instrument liabilities		2,273,226		2,167,886
Financial instrument with off-balance sheet risk:
Loan commitments		0		0
Letters of credit		0		0
Total financial instrument liabilities with off-balance-sheet risk		$ 0		$ 0
[1]	Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”).
[2]	Considered Level 1 under ASC 820.
[3]	Considered Level 2 under ASC 820.
[4]	Considered Level 2 under ASC 820.
[5]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
[6]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.

Fair Value Measurements, Assets

Fair Value Measurements, Assets and Liabilities Recurring Basis (Details) - USD ($) $ in Thousands		Mar. 31, 2016		Dec. 31, 2015
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale		$ 263,911		$ 264,235
U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale		25,175		24,978
State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale		176,478		173,929
Readily Available Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments	[1]	0
Total		135,553	[1]	35,427	[2]
Observable Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments		(5,933)	[3]	(4,180)
Total		291,126	[3]	290,295	[4]
Company Determined Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments	[5]	0
Total		2,114,791	[5]	2,101,868	[6]
Recurring Basis [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total		257,978		260,055
Recurring Basis [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale		25,175		24,978
Recurring Basis [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale		176,478		173,929
Recurring Basis [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale		62,258		65,328
Recurring Basis [Member] | Interest rate swaps [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments		(5,933)		(4,180)
Recurring Basis [Member] | Readily Available Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	[7]	0		0
Recurring Basis [Member] | Readily Available Market Prices [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	[7]	0		0
Recurring Basis [Member] | Readily Available Market Prices [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	[7]	0		0
Recurring Basis [Member] | Readily Available Market Prices [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	[7]	0		0
Recurring Basis [Member] | Observable Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	[8]	257,978		260,055
Recurring Basis [Member] | Observable Market Prices [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	[8]	25,175		24,978
Recurring Basis [Member] | Observable Market Prices [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	[8]	176,478		173,929
Recurring Basis [Member] | Observable Market Prices [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	[8]	62,258		65,328
Recurring Basis [Member] | Observable Market Prices [Member] | Interest rate swaps [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Derivative Financial Instruments	[8]	(5,933)		(4,180)
Recurring Basis [Member] | Company Determined Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	[9]	0		0
Recurring Basis [Member] | Company Determined Market Prices [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	[9]	0		0
Recurring Basis [Member] | Company Determined Market Prices [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	[9]	0		0
Recurring Basis [Member] | Company Determined Market Prices [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	[9]	$ 0		$ 0
[1]	Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”).
[2]	Considered Level 1 under ASC 820.
[3]	Considered Level 2 under ASC 820.
[4]	Considered Level 2 under ASC 820.
[5]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
[6]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
[7]	Considered Level 1 under ASC 820.
[8]	Considered Level 2 under ASC 820.
[9]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.

Fair Value Measurements, Asse40

Fair Value Measurements, Assets and Liabilities on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016		Dec. 31, 2015
Readily Available Market Prices [Member]
Loans
Agricultural	$ 0	[1]	$ 0	[2]
Commercial and financial	0	[1]	0	[2]
Real Estate [Abstract]
Construction, land development and commercial	0	[1]	0	[2]
Mortgage, farmland	0	[1]	0	[2]
Mortgage, 1 to 4 family first liens	0	[1]	0	[2]
Mortgage, 1 to 4 family junior liens	0	[1]	0	[2]
Mortgage, multi-family	0	[1]	0	[2]
Mortgage, commercial	0	[1]	0	[2]
Loans to individuals	0	[1]	0	[2]
Total financial instrument assets	135,553	[1]	35,427	[2]
Observable Market Prices [Member]
Loans
Agricultural	0	[3]	0	[4]
Commercial and financial	0	[3]	0	[4]
Real Estate [Abstract]
Construction, land development and commercial	0	[3]	0	[4]
Mortgage, farmland	0	[3]	0	[4]
Mortgage, 1 to 4 family first liens	0	[3]	0	[4]
Mortgage, 1 to 4 family junior liens	0	[3]	0	[4]
Mortgage, multi-family	0	[3]	0	[4]
Mortgage, commercial	0	[3]	0	[4]
Loans to individuals	0	[3]	0	[4]
Total financial instrument assets	291,126	[3]	290,295	[4]
Company Determined Market Prices [Member]
Loans
Agricultural	87,695	[5]	98,530	[6]
Commercial and financial	169,412	[5]	179,649	[6]
Real Estate [Abstract]
Construction, land development and commercial	103,842	[5]	81,705	[6]
Mortgage, farmland	186,148	[5]	184,640	[6]
Mortgage, 1 to 4 family first liens	716,974	[5]	718,566	[6]
Mortgage, 1 to 4 family junior liens	122,408	[5]	122,173	[6]
Mortgage, multi-family	285,700	[5]	272,446	[6]
Mortgage, commercial	312,448	[5]	319,090	[6]
Loans to individuals	22,400	[5]	23,509	[6]
Total financial instrument assets	2,114,791	[5]	2,101,868	[6]
Nonrecurring Basis [Member]
Loans
Agricultural	1,937	[7]	1,470	[8]
Commercial and financial	1,438	[7]	1,178	[8]
Real Estate [Abstract]
Construction, 1 to 4 family residential	972	[7]	482	[8]
Construction, land development and commercial	129	[7]	132	[8]
Mortgage, farmland	1,959	[7]	2,233	[8]
Mortgage, 1 to 4 family first liens	4,321	[7]	4,487	[8]
Mortgage, 1 to 4 family junior liens	212	[7]	286	[8]
Mortgage, multi-family	321	[7]	391	[8]
Mortgage, commercial	1,307	[7]	1,152	[8]
Loans to individuals	0	[7]	0	[8]
Foreclosed assets	0	[9]	100	[10]
Total financial instrument assets	12,596	[7]	11,911
Total Losses	360		1,310
Nonrecurring Basis [Member] | Agricultural [Member]
Real Estate [Abstract]
Total Losses	0	[7]	116	[8]
Nonrecurring Basis [Member] | Commercial and financial [Member]
Real Estate [Abstract]
Total Losses	20	[7]	56	[8]
Nonrecurring Basis [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Real Estate [Abstract]
Total Losses	0	[7]	161	[8]
Nonrecurring Basis [Member] | Real Estate: Construction, land development and commercial [Member]
Real Estate [Abstract]
Total Losses	0	[7]	35	[8]
Nonrecurring Basis [Member] | Real Estate: Mortgage, farmland [Member]
Real Estate [Abstract]
Total Losses	0	[7]	0	[8]
Nonrecurring Basis [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Real Estate [Abstract]
Total Losses	275	[7]	529	[8]
Nonrecurring Basis [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Real Estate [Abstract]
Total Losses	0	[7]	166	[8]
Nonrecurring Basis [Member] | Real Estate: Mortgage, multi-family [Member]
Real Estate [Abstract]
Total Losses	0	[7]	38	[8]
Nonrecurring Basis [Member] | Real Estate: Mortgage, commercial [Member]
Real Estate [Abstract]
Total Losses	65	[7]	140	[8]
Nonrecurring Basis [Member] | Loans to individuals [Member]
Real Estate [Abstract]
Total Losses	0	[7]	0	[8]
Nonrecurring Basis [Member] | Foreclosed assets [Member]
Real Estate [Abstract]
Total Losses	0	[9]	69	[10]
Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Loans
Agricultural	0	[7],[11]	0	[8],[12]
Commercial and financial	0	[7],[11]	0	[8],[12]
Real Estate [Abstract]
Construction, 1 to 4 family residential	0	[7],[11]	0	[8],[12]
Construction, land development and commercial	0	[7],[11]	0	[8],[12]
Mortgage, farmland	0	[7],[11]	0	[8],[12]
Mortgage, 1 to 4 family first liens	0	[7],[11]	0	[8],[12]
Mortgage, 1 to 4 family junior liens	0	[7],[11]	0	[8],[12]
Mortgage, multi-family	0	[7],[11]	0	[8],[12]
Mortgage, commercial	0	[7],[11]	0	[8],[12]
Loans to individuals	0	[7],[11]	0	[8],[12]
Foreclosed assets	0	[9],[11]	0	[10],[12]
Total financial instrument assets	0	[11]	0	[12]
Nonrecurring Basis [Member] | Observable Market Prices [Member]
Loans
Agricultural	0	[7],[13]	0	[8],[14]
Commercial and financial	0	[7],[13]	0	[8],[14]
Real Estate [Abstract]
Construction, 1 to 4 family residential	0	[7],[13]	0	[8],[14]
Construction, land development and commercial	0	[7],[13]	0	[8],[14]
Mortgage, farmland	0	[7],[13]	0	[8],[14]
Mortgage, 1 to 4 family first liens	0	[7],[13]	0	[8],[14]
Mortgage, 1 to 4 family junior liens	0	[7],[13]	0	[8],[14]
Mortgage, multi-family	0	[7],[13]	0	[8],[14]
Mortgage, commercial	0	[7],[13]	0	[8],[14]
Loans to individuals	0	[7],[13]	0	[8],[14]
Foreclosed assets	0	[9],[13]	0	[10],[14]
Total financial instrument assets	0	[7],[13]	0	[14]
Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Loans
Agricultural	1,937	[7],[15]	1,470	[8],[16]
Commercial and financial	1,438	[7],[15]	1,178	[8],[16]
Real Estate [Abstract]
Construction, 1 to 4 family residential	972	[7],[15]	482	[8],[16]
Construction, land development and commercial	129	[7],[15]	132	[8],[16]
Mortgage, farmland	1,959	[7],[15]	2,233	[8],[16]
Mortgage, 1 to 4 family first liens	4,321	[7],[15]	4,487	[8],[16]
Mortgage, 1 to 4 family junior liens	212	[7],[15]	286	[8],[16]
Mortgage, multi-family	321	[7],[15]	391	[8],[16]
Mortgage, commercial	1,307	[7],[15]	1,152	[8],[16]
Loans to individuals	0	[7],[15]	0	[8],[16]
Foreclosed assets	0	[9],[15]	100	[10],[16]
Total financial instrument assets	$ 12,596	[7],[15]	$ 11,911	[16]
[1]	Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”).
[2]	Considered Level 1 under ASC 820.
[3]	Considered Level 2 under ASC 820.
[4]	Considered Level 2 under ASC 820.
[5]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
[6]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
[7]	Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully-charged off is zero.
[8]	Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully-charged off is zero.
[9]	Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.
[10]	Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.
[11]	Considered Level 1 under ASC 820.
[12]	Considered Level 1 under ASC 820.
[13]	Considered Level 2 under ASC 820.
[14]	Considered Level 2 under ASC 820.
[15]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
[16]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.

Stock Repurchase Program (Detai

Stock Repurchase Program (Details) - $ / shares	3 Months Ended		128 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2016	Jul. 26, 2005
Equity [Abstract]
Maximum number of share authorized to repurchase under the program (in shares)				1,500,000
Common stock purchased during the period (in shares)	35,252	4,728	912,841
Average price per share (in dollars per share)	$ 44.79

Commitments and Contingencies42

Commitments and Contingencies (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
State and political subdivisions [Member]
Concentration Risk [Line Items]
Investment in securities issued by state and political subdivisions within the state of Iowa	$ 91,980
Home equity loans [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	46,610	$ 44,376
Credit cards [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	43,260	41,518
Commercial, real estate and home construction [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	100,509	98,613
Commercial lines and real estate purchase loan [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	177,287	160,095
Outstanding letters of credit [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	$ 12,293	$ 11,718

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Tax Examination [Line Items]
Effective tax rate	29.65%	29.26%
Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Income tax examination, years under examination	December 31, 2015, 2014, and 2013
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Income tax examination, years under examination	December 31, 2015, 2014, and 2013

Derivative Financial Instrume44

Derivative Financial Instruments (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Nov. 07, 2013USD ($)derivative
Derivatives, Fair Value [Line Items]
Owned and pledged as collateral	$ 5,930,000
Interest Rate Swap 1 [Member] | Interest Expense [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Amount of Gain (Loss), Reclassified from AOCI into Income (Effective Portion)	0	$ 0
Interest Rate Swap 1 [Member] | Other Income [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Amount of Gain (Loss), Recognized in Income on Derivatives (Ineffective Portion)	0	0
Interest Rate Swap 1 [Member] | Other Liabilities [Member]
Derivative instrument according to type of hedges [Abstract]
Notional Amount	25,000,000		$ 25,000,000
Fair Value	$ (2,073,000)
Maturity	Nov. 9, 2020
Interest Rate Swap 1 [Member] | Other Assets [Member]
Derivative instrument according to type of hedges [Abstract]
Notional Amount		25,000,000
Fair Value		$ (1,501,000)
Maturity		Nov. 9, 2020
Interest Rate Swap 1 [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Amount of Gain (Loss), Recognized in OCI (Effective Portion)	$ (353,000)	$ (394,000)
Interest Rate Swap 2 [Member] | Interest Expense [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Amount of Gain (Loss), Reclassified from AOCI into Income (Effective Portion)	0	0
Interest Rate Swap 2 [Member] | Other Income [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Amount of Gain (Loss), Recognized in Income on Derivatives (Ineffective Portion)	0	0
Interest Rate Swap 2 [Member] | Other Liabilities [Member]
Derivative instrument according to type of hedges [Abstract]
Notional Amount	25,000,000		$ 25,000,000
Fair Value	$ (3,860,000)
Maturity	Nov. 7, 2023
Interest Rate Swap 2 [Member] | Other Assets [Member]
Derivative instrument according to type of hedges [Abstract]
Notional Amount		25,000,000
Fair Value		$ (2,679,000)
Maturity		Nov. 7, 2023
Interest Rate Swap 2 [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Amount of Gain (Loss), Recognized in OCI (Effective Portion)	$ (730,000)	$ (461,000)
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Number of interest rate swaps held | derivative			2
Description of terms	three-month LIBOR
Designated as Hedging Instrument [Member] | Interest Rate Swap 1 [Member]
Derivatives, Fair Value [Line Items]
Number of interest rate swaps held | derivative			1