German American Bancorp (GABC) 10-K 1 Mar 18 2017 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Feb. 20, 2018	Jun. 30, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	GERMAN AMERICAN BANCORP, INC.
Entity Central Index Key	714,395
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	FY
Amendment Flag	false
Trading Symbol	GABC
Entity Common Stock, Shares Outstanding		22,934,253
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 716,866,972

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
ASSETS
Cash and Due from Banks		$ 58,233	$ 48,467
Federal Funds Sold and Other Short-term Investments		12,126	16,349
Cash and Cash Equivalents		70,359	64,816
Securities Available-for-Sale, at Fair Value		740,994	709,786
Loans Held-for-Sale, at Fair Value		6,719	15,273
Loans		2,145,019	1,993,404
Less:
Unearned Income		(3,381)	(3,449)
Allowance for Loan Losses		(15,694)	(14,808)
Loans, Net		2,125,944	1,975,147
Stock in FHLB of Indianapolis and Other Restricted Stock, at Cost		13,048	13,048
Premises, Furniture and Equipment, Net		54,246	48,230
Other Real Estate		54	242
Goodwill		54,058	54,058
Intangible Assets		2,102	2,835
Company Owned Life Insurance		46,385	46,642
Accrued Interest Receivable and Other Assets		30,451	25,917
TOTAL ASSETS		3,144,360	2,955,994
LIABILITIES
Non-interest-bearing Demand Deposits		606,134	571,989
Interest-bearing Demand, Savings, and Money Market Accounts		1,490,033	1,399,381
Time Deposits		387,885	378,181
Total Deposits		2,484,052	2,349,551
FHLB Advances and Other Borrowings		275,216	258,114
Accrued Interest Payable and Other Liabilities		20,521	18,062
TOTAL LIABILITIES		2,779,789	2,625,727
Commitments and Contingencies (Note 14)
SHAREHOLDERS’ EQUITY
Preferred Stock, no par value; 500,000 shares authorized, no shares issued		0	0
Common Stock, no par value, $1 stated value; 45,000,000 shares authorized (1)		22,934	15,261
Additional Paid-in Capital		165,288	171,744
Retained Earnings		178,969	149,666
Accumulated Other Comprehensive (Loss) Income		(2,620)	(6,404)
TOTAL SHAREHOLDERS’ EQUITY		364,571	330,267
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY		$ 3,144,360	$ 2,955,994
End of period shares issued (in shares)	[1]	22,934,403	22,904,157
[1]	Share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical)		Dec. 31, 2017$ / sharesshares	Dec. 31, 2016$ / sharesshares
Statement of Financial Position [Abstract]
Preferred Stock, shares authorized (in shares)		500,000	500,000
Preferred Stock, shares issued (in shares)		0	0
Common Stock, stated value (in dollars per share) | $ / shares		$ 1	$ 1
Common Stock, shares authorized (in shares)	[1]	45,000,000	45,000,000
End of period shares outstanding (in shares)	[1]	22,934,403	22,904,157
[1]	Share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017.

Consolidated Statements of Inco

Consolidated Statements of Income $ in Thousands		12 Months Ended
		Dec. 31, 2017USD ($)$ / shares	Dec. 31, 2016USD ($)$ / shares	Dec. 31, 2015USD ($)$ / shares
INTEREST INCOME
Interest and Fees on Loans		$ 91,745	$ 86,202	$ 66,740
Interest on Federal Funds Sold and Other Short-term Investments		134	74	13
Interest and Dividends on Securities:
Taxable		10,898	9,638	9,017
Non-taxable		8,253	7,451	5,850
TOTAL INTEREST INCOME		111,030	103,365	81,620
INTEREST EXPENSE
Interest on Deposits		7,094	5,187	3,976
Interest on FHLB Advances and Other Borrowings		4,027	3,274	2,092
TOTAL INTEREST EXPENSE		11,121	8,461	6,068
NET INTEREST INCOME		99,909	94,904	75,552
Provision for Loan Losses		1,750	1,200	0
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES		98,159	93,704	75,552
NON-INTEREST INCOME
Trust and Investment Product Fees		5,272	4,644	3,957
Service Charges on Deposit Accounts		6,178	5,973	4,826
Insurance Revenues		7,979	7,741	7,489
Company Owned Life Insurance		1,341	987	846
Debit Interchange Fee Income		4,567	3,627	3,110
Other Operating Income		2,641	3,703	3,532
Net Gains on Sales of Loans		3,280	3,359	2,959
Net Gains on Securities		596	1,979	725
TOTAL NON-INTEREST INCOME		31,854	32,013	27,444
NON-INTEREST EXPENSE
Salaries and Employee Benefits		46,642	43,961	35,042
Occupancy Expense		6,609	6,297	4,939
Furniture and Equipment Expense		2,621	2,261	1,873
FDIC Premiums		954	1,151	1,144
Data Processing Fees		4,276	5,686	3,541
Professional Fees		2,817	3,672	2,661
Advertising and Promotion		3,543	2,657	3,669
Intangible Amortization		942	1,062	790
Other Operating Expenses		9,399	9,840	7,667
TOTAL NON-INTEREST EXPENSE		77,803	76,587	61,326
Income before Income Taxes		52,210	49,130	41,670
Income Tax Expense		11,534	13,946	11,606
NET INCOME		$ 40,676	$ 35,184	$ 30,064
Basic Earnings per Share (in USD per share) | $ / shares	[1],[2]	$ 1.77	$ 1.57	$ 1.51
Diluted Earnings per Share (in USD per share) | $ / shares	[1],[2]	1.77	1.57	1.51
Dividends per Share (in usd per share) | $ / shares	[1]	$ 0.52	$ 0.48	$ 0.45
[1]	Per share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017.
[2]	Share and per share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Statement of Comprehensive Income [Abstract]
Net Income	$ 40,676	$ 35,184	$ 30,064
Unrealized Gains (Losses) on Securities:
Unrealized Holding Gain (Loss) Arising During the Period	7,364	(13,830)	2,153
Reclassification Adjustment for Gains Included in Net Income	(596)	(1,979)	(725)
Tax Effect	(2,377)	5,607	(496)
Net of Tax	4,391	(10,202)	932
Defined Benefit Pension Plans and Postretirement Benefit Obligation
Net (Loss) Arising During the Period	(226)	(24)	(22)
Reclassification Adjustment for Amortization of Prior Service Cost and Net Loss Included in Net Periodic Pension Cost	8	6	5
Tax Effect	80	4	7
Net of Tax	(138)	(14)	(10)
Total Other Comprehensive Income (Loss)	4,253	(10,216)	922
COMPREHENSIVE INCOME	$ 44,929	$ 24,968	$ 30,986

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands		Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balances (in shares) at Dec. 31, 2014			13,215,800
Beginning Balance at Dec. 31, 2014		$ 228,824	$ 13,216	$ 108,660	$ 104,058	$ 2,890
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		30,064			30,064
Other Comprehensive Income (Loss)		922				922
Cash Dividends ($.52, $.48, $.45 per share)	[1]	(9,010)			(9,010)
Issuance of Common Stock for:
Exercise of Stock Options (in shares)			12,985
Exercise of Stock Options		49	$ 13	36
Restricted Share Grants (in shares)			34,826
Restricted Share Grants		963	$ 35	928
Employee Stock Purchase Plan (in shares)			15,213
Employee Stock Purchase Plan		447	$ 15	432
Income Tax Benefit From Restricted Share Vesting		89		89
Ending Balances (in shares) at Dec. 31, 2015			13,278,824
Ending Balance at Dec. 31, 2015		252,348	$ 13,279	110,145	125,112	3,812
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		35,184			35,184
Other Comprehensive Income (Loss)		(10,216)				(10,216)
Cash Dividends ($.52, $.48, $.45 per share)	[1]	(10,630)			(10,630)
Issuance of Common Stock for:
Exercise of Stock Options (in shares)			4,166
Exercise of Stock Options		55	$ 4	51
Acquisition of River Valley Bancorp (in shares)			1,942,429
Acquisition of River Valley Bancorp		61,919	$ 1,942	59,977
Restricted Share Grants (in shares)			36,012
Restricted Share Grants		1,407	$ 36	1,371
Income Tax Benefit From Restricted Share Vesting		200		200
Ending Balances (in shares) at Dec. 31, 2016			15,261,431
Ending Balance at Dec. 31, 2016		330,267	$ 15,261	171,744	149,666	(6,404)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income		40,676			40,676
Other Comprehensive Income (Loss)		4,253				4,253
Reclass Upon Adoption of ASU 2018-02 (See Note 1 - Summary of Significant Accounting Policies)		0			469	(469)
Cash Dividends ($.52, $.48, $.45 per share)	[1]	(11,842)			(11,842)
Issuance of Common Stock for:
3-for-2 Stock Split (in shares)			7,642,726
3-for-2 Stock Split		(29)	$ 7,643	(7,672)
Restricted Share Grants (in shares)			30,246
Restricted Share Grants		1,246	$ 30	1,216
Income Tax Benefit From Restricted Share Vesting		0		0
Ending Balances (in shares) at Dec. 31, 2017			22,934,403
Ending Balance at Dec. 31, 2017		$ 364,571	$ 22,934	$ 165,288	$ 178,969	$ (2,620)
[1]	Per share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017.

Consolidated Statements of Cha7

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical)	12 Months Ended
	Dec. 31, 2017$ / shares	Dec. 31, 2016$ / shares	Dec. 31, 2015$ / shares
Statement of Stockholders' Equity [Abstract]
Cash dividends, (in dollars per share)	$ 0.52	$ 0.48	$ 0.45

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 40,676	$ 35,184	$ 30,064
Adjustments to Reconcile Net Income to Net Cash from Operating Activities:
Net Amortization on Securities	3,543	3,675	2,548
Depreciation and Amortization	4,687	4,315	4,264
Loans Originated for Sale	(122,518)	(138,192)	(137,687)
Proceeds from Sales of Loans Held-for-Sale	134,316	137,307	136,088
Provision for Loan Losses	1,750	1,200	0
Gain on Sale of Loans, net	(3,280)	(3,359)	(2,959)
Gain on Securities, net	(596)	(1,979)	(725)
Loss (Gain) on Sales of Other Real Estate and Repossessed Assets	(17)	(55)	63
Loss on Disposition and Donation of Premises and Equipment	870	5	389
Post Retirement Medical Benefit	(34)	7	15
Increase in Cash Surrender Value of Company Owned Life Insurance	(1,370)	(1,068)	(689)
Equity Based Compensation	1,246	1,407	963
Excess Tax Benefit from Restricted Share Grant	240	200	89
Change in Assets and Liabilities:
Interest Receivable and Other Assets	(4,528)	5,813	172
Interest Payable and Other Liabilities	(110)	(2,547)	(1,328)
Net Cash from Operating Activities	54,875	41,913	31,267
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of Other Short-term Investments	0	(1,000)	0
Proceeds from Maturity of Other Short-term Investments	0	1,992	100
Proceeds from Maturities, Calls, Redemptions of Securities Available-for-Sale	79,955	103,301	90,702
Proceeds from Sales of Securities Available-for-Sale	49,459	165,102	18,999
Purchase of Securities Available-for-Sale	(156,802)	(225,456)	(116,942)
Proceeds from Maturities of Securities Held-to-Maturity	0	95	89
Purchase of Federal Home Loan Bank Stock	0	(1,350)	(2,395)
Proceeds from Redemption of Federal Home Loan Bank Stock	0	0	864
Purchase of Loans	(5,547)	(5,383)	(9,895)
Proceeds from Sales of Loans	1,106	2,029	0
Loans Made to Customers, net of Payments Received	(149,336)	(106,198)	(108,007)
Proceeds from Sales of Other Real Estate	1,435	1,429	1,170
Property and Equipment Expenditures	(11,183)	(5,234)	(1,614)
Proceeds from Sales of Property and Equipment	6	0	0
Proceeds from Life Insurance	1,627	0	0
Acquisition of River Valley Bancorp	0	(1,016)	0
Net Cash from Investing Activities	(189,280)	(71,689)	(126,929)
CASH FLOWS FROM FINANCING ACTIVITIES
Change in Deposits	134,737	118,231	46,630
Change in Short-term Borrowings	(4,054)	(40,163)	36,244
Advances in Long-term Debt	75,000		75,000
Repayments of Long-term Debt	(53,864)	(24,910)	(44,135)
Issuance (Retirement) of Common Stock	(29)	55	49
Employee Stock Purchase Plan			447
Dividends Paid	(11,842)	(10,630)	(9,010)
Net Cash from Financing Activities	139,948	42,583	105,225
Net Change in Cash and Cash Equivalents	5,543	12,807	9,563
Cash and Cash Equivalents at Beginning of Year	64,816	52,009	42,446
Cash and Cash Equivalents at End of Year	70,359	64,816	52,009
Cash Paid During the Year for
Interest	10,852	8,348	6,146
Income Taxes	12,462	9,254	9,083
Supplemental Non Cash Disclosures (See Note 18 for Business Combinations)
Loans Transferred to Other Real Estate	1,230	565	1,046
Reclassification of Land to Other Assets	$ 330	$ 664	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Description of Business and Basis of Presentation German American Bancorp, Inc's. operations are primarily comprised of three business segments: core banking, trust and investment advisory services, and insurance operations. The accounting and reporting policies of German American Bancorp, Inc. and its subsidiaries conform to U.S. generally accepted accounting principles. The more significant policies are described below. The consolidated financial statements include the accounts of the Company and its subsidiaries after elimination of all material intercompany accounts and transactions. Certain prior year amounts have been reclassified to conform with current classifications. Reclassifications had no impact on shareholders' equity or net income. To prepare financial statements in conformity with accounting principles generally accepted in the United States of America management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. Securities Securities classified as available-for-sale are securities that the Company intends to hold for an indefinite period of time, but not necessarily until maturity. These include securities that management may use as part of its asset/liability strategy, or that may be sold in response to changes in interest rates, changes in prepayment risk, or similar reasons. Equity securities with readily determinable fair values are classified as available-for-sale. Equity securities that do not have readily determinable fair values are carried at historical cost and evaluated for impairment on a periodic basis. Securities classified as available-for-sale are reported at fair value with unrealized gains or losses included as a separate component of equity, net of tax. Securities classified as held-to-maturity are securities that the Company has both the ability and positive intent to hold to maturity. Securities held-to-maturity are carried at amortized cost. Premium amortization is deducted from, and discount accretion is added to, interest income using the level yield method without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Gains and losses on sales are recorded on trade date and are computed on the identified securities method. Management evaluates securities for other-than-temporary impairment (“OTTI”) on at least a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. For securities in an unrealized loss position, management considers the extent and duration of the unrealized loss, and the financial condition and near-term prospects of the issuer. Management also assesses whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: 1) OTTI related to credit loss, which must be recognized in the income statement and 2) OTTI related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. For equity securities, the entire amount of impairment is recognized through earnings. Loans Held for Sale Mortgage loans originated and intended for sale in the secondary market are carried at fair value. Fair value is determined based on collateral value and prevailing market prices for loans with similar characteristics. Net unrealized gains or losses are recorded through earnings. Mortgage loans held for sale are generally sold on a servicing released basis. Gains and losses on sales of mortgage loans are based on the difference between the selling price and the carrying value of the related loan sold. Loans Loans that management originates and has the intent and ability to hold for the foreseeable future or until maturity or pay-off are reported at the principal balance outstanding, net of unearned interest, deferred loan fees and costs, and an allowance for loan losses. Interest income is accrued on unpaid principal balance and includes amortization of net deferred loan fees and costs over the loan term without anticipating prepayments. All classes of loans are generally placed on non-accrual status when scheduled principal or interest payments are past due for 90 days or more or when the borrower’s ability to repay becomes doubtful. Uncollected accrued interest for each class of loans is reversed against income at the time a loan is placed on non-accrual. Interest received on such loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. All classes of loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. Loans are typically charged-off at 180 days past due, or earlier if deemed uncollectible. Exceptions to the non-accrual and charge-off policies are made when the loan is well secured and in the process of collection. Certain Purchased Loans The Company purchases individual loans and groups of loans. Purchased loans that show evidence of credit deterioration since origination are recorded at the amount paid (or allocated fair value in a purchase business combination), such that there is no carryover of the seller’s allowance for loan losses. After acquisition, incurred losses are recognized by an increase in the allowance for loan losses. Such purchased loans are accounted for individually. The Company estimates the amount and timing of expected cash flows for each purchased loan and the expected cash flows in excess of amount paid is recorded as interest income over the remaining life of the loan (accretable yield). The excess of the loan’s contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest income. Allowance for Loan Losses The allowance for loan losses is a valuation allowance for probable incurred credit losses. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance. Management estimates the allowance balance required using past loan loss experience, the nature and volume of the portfolio, information about specific borrower situations and estimated collateral values, economic conditions, and other factors. Allocations of the allowance may be made for specific loans, but the entire allowance is available for any loan that, in management’s judgment, should be charged-off. The allowance consists of specific and general components. The specific component relates to loans that are individually classified as impaired or loans otherwise classified as substandard or special mention. The general component covers non-classified loans and is based on historical loss experience adjusted for current factors. Loan impairment is reported when full repayment under the terms of the loan is not expected. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported net, at the present value of estimated future cash flows using the loan’s existing rate, or at the fair value of collateral if repayment is expected solely from the collateral. Commercial and industrial loans, commercial real estate loans, and agricultural loans are evaluated individually for impairment. Smaller balance homogeneous loans are evaluated for impairment in total. Such loans include real estate loans secured by one-to-four family residences and loans to individuals for household, family and other personal expenditures. Individually evaluated loans on non-accrual are generally considered impaired. Impaired loans, or portions thereof, are charged off when deemed uncollectible. Troubled debt restructurings are separately identified for impairment disclosures and are measured at the present value of estimated future cash flows using the loan’s effective rate at inception. If a troubled debt restructuring is considered to be a collateral dependent loan, the loan is reported at the fair value of the collateral net of disposition costs. For troubled debt restructurings that subsequently default, the Company determines the amount of reserve in accordance with the accounting policy for the allowance for loan losses. The general component of the allowance for loan losses covers non-impaired loans and is based on historical loss experience adjusted for current factors. The historical loss experience is determined by portfolio segment and risk classifications and is based on the actual loss history experienced by the Company over a 20 quarter average. The Company separately assigns allocations for substandard and special mention commercial and agricultural credits as well as other categories of loans based on migration analysis techniques. This actual loss experience is supplemented with other external and internal factors based on the risks present for each portfolio segment. These factors include consideration of the following: levels of and trends in delinquencies and impaired loans; levels of and trends in charge-offs and recoveries; trends in volume and terms of loans; effects of any changes in risk selection and underwriting standards; other changes in lending policies, procedures, and practices; experience, ability, and depth of lending management and other relevant staff; national and local economic trends and conditions; industry conditions; and effects of changes in credit concentrations. The following portfolio segments have been identified: Commercial Loans and Retail Loans. Commercial Loans have been classified according to the following risk characteristics: Commercial and Industrial Loans and Leases, Commercial Real Estate, and Agricultural Loans. Commercial and Industrial loans are primarily based on the cash flows of the business operations and secured by assets being financed and other assets such as accounts receivable and inventory. Commercial Real Estate Loans and Agricultural Loans are primarily based on cash flow of the borrower and their business and further secured by real estate. All types of commercial and agricultural (real estate secured and non-real estate) may also come with personal guarantees of the borrowers and business owners. Retail Loans have been classified according to the following risk characteristics: Home Equity Loans, Consumer Loans and Residential Mortgage Loans. Retail loans are generally dependent on personal income of the customer, and repayment is dependent on borrower’s personal cash flow and employment status which can be affected by general economic conditions. Additionally, collateral values may fluctuate based on the impact of economic conditions on residential real estate values and other consumer type assets such as automobiles. Loans or portions of loans shall be charged off when there is a distinct probability of loss identified. A distinct probability of loss exists when it has been determined that any remaining sources of repayment are insufficient to cover all outstanding principal. The probable loss is immediately calculated based on the value of the remaining sources of repayment and charged to the allowance for loan loss. Servicing Rights When mortgage loans are sold with servicing retained, servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. Fair value is based on market prices for comparable mortgage servicing contracts when available or, alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Through the acquisition of River Valley Bancorp in 2016, German American acquired a portfolio of servicing rights on mortgage loans. The fair value of mortgage servicing rights were $547 and $611 at December 31, 2017 and 2016, respectively. On a quarterly basis, loan servicing rights are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. The valuation model utilizes interest rate, prepayment speed, and default rate assumptions that market participants would use in estimating future net servicing income and that can be validated against available market data. Servicing fee income is reported on the income statement as other operating income. The fees are based on a contractual percentage of the outstanding principal and are recorded as income when earned. The amortization of mortgage servicing right is netted against loan servicing fee income. Federal Home Loan Bank (FHLB) Stock The Bank is a member of the FHLB of Indianapolis. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock is carried at cost, classified as a restricted security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income. Premises, Furniture and Equipment Land is carried at cost. Premises, furniture, and equipment are stated at cost less accumulated depreciation. Buildings and related components are depreciated using the straight-line method with useful lives ranging generally from 10 to 40 years. Furniture, fixtures, and equipment are depreciated using the straight-line method with useful lives ranging generally from 3 to 10 years. Other Real Estate Assets acquired through or instead of loan foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. If fair value declines subsequent to foreclosure, a valuation allowance is recorded through expense. Operating costs after acquisition are expensed. Goodwill and Other Intangible Assets Goodwill resulting from business combinations prior to January 1, 2009 represents the excess of the purchase price over the fair value of the net assets of businesses acquired. Goodwill resulting from business combinations after January 1, 2009, is generally determined as the excess of the fair value of the consideration transferred, plus the fair value of any noncontrolling interests in the acquiree, over the fair value of the net assets acquired and liabilities assumed as of the acquisition date. Goodwill and intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but tested for impairment at least annually. The Company has selected December 31 as the date to perform the annual impairment test. Intangible assets with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Goodwill is the only intangible asset with an indefinite life on the Company’s balance sheet. Other intangible assets consist of core deposit and acquired customer relationship intangible assets. They are initially measured at fair value and then are amortized over their estimated useful lives, which range from 6 to 10 years. Company Owned Life Insurance The Company has purchased life insurance policies on certain directors and executives. This life insurance is recorded at its cash surrender value or the amount that can be realized, which considers any adjustments or changes that are probable at settlement. Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe currently that there are any such matters that will have a material impact on the financial statements. Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded. Restrictions on Cash At December 31, 2017 and 2016, respectively, the Company was required to have $10,967 and $11,659 on deposit with the Federal Reserve, or as cash on hand. Long-term Assets Premises and equipment, core deposit and other intangible assets, and other long-term assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value. Stock Based Compensation Compensation cost is recognized for stock options and restricted stock awards issued to employees and directors, based on the fair value of these awards at the date of grant. A Black-Scholes model is utilized to estimate the fair value of stock options, while the market price of the Corporation’s common stock at the date of grant is used for restricted stock awards. Compensation cost is recognized over the required service period, generally defined as the vesting period. Comprehensive Income Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities available for sale and changes in unrecognized amounts in pension and other postretirement benefits, which are also recognized as a separate component of equity. Income Taxes Income tax is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax liabilities and assets are determined at each balance sheet date and are the result of differences in the financial statement and tax bases of assets and liabilities. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. Retirement Plans Pension expense under the suspended defined benefit plan is the net of interest cost, return on plan assets and amortization of gains and losses not immediately recognized. Employee 401(k) and profit sharing plan expense is the amount of matching contributions. Deferred compensation and supplemental retirement plan expense allocates the benefits over years of service. Earnings Per Share Earnings per share are based on net income divided by the weighted average number of shares outstanding during the period. Diluted earnings per share show the potential dilutive effect of additional common shares issuable under the Company’s stock based compensation plans. Earnings per share are retroactively restated for stock splits and stock dividends. Cash Flow Reporting The Company reports net cash flows for customer loan transactions, deposit transactions, deposits made with other financial institutions and short-term borrowings. Cash and cash equivalents are defined to include cash on hand, demand deposits in other institutions and Federal Funds Sold. Fair Values of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in Note 15. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates. New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (the "FASB") amended existing guidance (ASU 2014-09 Revenue From Contracts With Customers (Topic 606)) related to revenue from contracts with customers. This amendment supersedes and replaces nearly all existing revenue recognition guidance, including industry-specific guidance, establishes a new control-based revenue recognition model, changes the basis for deciding when revenue is recognized over time or at a point in time, provides new and more detailed guidance on specific topics and expands and improves disclosures about revenue. In addition, this amendment specifies the accounting for some costs to obtain or fulfill a contract with a customer. These amendments are effective for public business entities for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. The amendments allow for one of two transition methods: full retrospective or modified retrospective. The full retrospective approach requires application to all periods presented. The modified retrospective transition requires application to uncompleted contracts at the date of adoption. Periods prior to the date of adoption are not retrospectively revised, but a cumulative effect is recognized at the date of initial application on uncompleted contracts. The Company adopted the new guidance effective January 1, 2018 and intends to utilize the modified retrospective method. The Company established a task force for evaluating the impact of ASU 2014-09 on the Company's consolidated results. The new standard did not result in a material change in the manner in which it recognizes revenue because the majority of the Company's financial instruments are not within the scope of Topic 606. Revenue streams within Other Noninterest Income that the Company evaluated primarily included Service Charges on Deposit Accounts, Trust and Investment Product Fees, and Insurance Revenues. This pronouncement will not have a material impact on the Company's consolidated results of operations and financial condition as the Company's core revenue does not fall under this guidance. Even though this pronouncement will not have a material impact on the Company's consolidated results, the Company will have additional disclosures in its Form 10-Q for the first quarter of 2018 as required by this guidance. In January 2016, the FASB amended existing guidance (ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities) that requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. It requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. It requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables). It eliminates that requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. These amendments are effective for public business entities for fiscal years beginning after December 15, 2017, including interim periods within that reporting period. The Company notes that the impact of adoption is to carry the equity security at fair value through the income statement or at cost, less impairment when fair value is not readily determinable, with observable price changes being recognized in earnings. The Company doesn't expect the impact to have a material effect on the Company's operating results or financial condition; however, it will impact the fair value disclosures included in Note 15 - Fair Value. For additional information on this equity security, see Note 2 - Securities. In February 2016, the FASB amended existing guidance (ASU No. 2016-02, Leases (Topic 842)) that requires lessees recognize the following for all leases (with the exception of short-term leases) at the commencement date (1) A lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) A right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. These amendments are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within that reporting period. Based on our leases outstanding as of December 31, 2017, the Company does not expect this new guidance to have a material impact on the consolidated results of operation. However as a result of this new guidance, the Company anticipates an estimated increase in its Consolidated Balance Sheet of approximately $6,000 . This impact will vary based on the Company's future decisions to enter into new lease agreements or exit/renew current lease agreements prior to the date of implementation. In June 2016, the FASB issued guidance (ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326)) to replace the incurred loss model with an expected loss model, which is referred to as the current expected credit loss (CECL) model. The CECL model is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables, held-to-maturity debt securities, and reinsurance receivables. It also applies to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor. This standard will be effective for public business entities for fiscal years beginning after December 15, 2019, including interim periods within that reporting period. Transition: • For debt securities with other-than-temporary impairment (OTTI), the guidance will be applied prospectively. • Existing purchased credit impaired (PCI) assets will be grandfathered and classified as purchased credit deteriorated (PCD) assets at the date of adoption. The asset will be grossed up for the allowance for expected credit losses for all PCD assets at the date of adoption and will continue to recognize the noncredit discount in interest income based on the yield of such assets as of the adoption date. Subsequent changes in expected credit losses will be recorded through the allowance. • For all other assets within the scope of CECL, a cumulative-effect adjustment will be recognized in retained earnings as of the beginning of the first reporting period in which the guidance is effective. The Company has formed a CECL committee that is assessing data and system needs in order to evaluate the impact of adopting the new guidance. The Company expects to recognize a one-time cumulative adjustment to the allowance for loan losses as of the beginning of the first reporting period in which the new standard is effective, but can not estimate the amount at this time. In August 2016, the FASB issued ASU (ASU No. 2016-15, Statement of Cash Flows (Topic 320): Classification of Certain Cash Receipts and Cash Payments) to address the diversity in how certain cash receipts and cash payments are presented and classified in the statement of cash flows including the following: • Debt Prepayment or Debt Extinguishment Costs; • Settlement of Zero-Coupon Bonds or Debt with Coupon Interest Rates That Are Insignificant in Relation to the Effective Interest Rate; • Contingent Consideration payments Made Soon After a Business Combination; • Proceeds From the Settlement of Insurance Claims; • Proceeds From the Settlement of BOLI and COLI Policies; • Distributions Received From Equity Method Investees; • Beneficial Interests in Securitization Transactions; and • Application of the Predominance Principle. These amendments are effective for public business entities beginning January 1, 2018. This guidance currently has no material impact on the Company's Consolidated Statements of Cash Flows; however, the Company will continue to monitor it going forward. In March 2017, the FASB amended existing guidance (ASU No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20)) to amend the amortization period for certain purchased callable debt securities held at a premium. The amortization period has been shortened to the earliest call date. Under current generally accepted accounting principles, entities generally amortize the premium as an adjustment of yield over the contractual life of the instrument. These amendments are effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company early adopted this guidance in 2017 and it did not have a material impact on the Company's operating results or financial condition. In January 2018, the FASB issued new guidance (ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220)) to allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. The amendments eliminate the stranded tax effects resulting from the Tax Cuts and Jobs Act and will improve the usefulness of information reported to financial statement users. This amendment is effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. The Company early adopted this guidance in 2017 and it did not have a material impact on the Company's operating results or financial condition.

Securities

Securities	12 Months Ended
	Dec. 31, 2017
Investments [Abstract]
Securities	Securities The amortized cost, unrealized gross gains and losses recognized in accumulated other comprehensive income (loss), and fair value of Securities Available-for-Sale were as follows: Securities Available-for-Sale: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2017 Obligations of State and Political Subdivisions $ 267,437 $ 6,733 $ (861 ) $ 273,309 MBS/CMO – Residential 476,205 416 (9,289 ) 467,332 Equity Securities 353 — — 353 Total $ 743,995 $ 7,149 $ (10,150 ) $ 740,994 2016 Obligations of State and Political Subdivisions $ 247,350 $ 3,847 $ (3,678 ) $ 247,519 MBS/CMO - Residential 471,852 480 (10,418 ) 461,914 Equity Securities 353 — — 353 Total $ 719,555 $ 4,327 $ (14,096 ) $ 709,786 Equity securities that do not have readily determinable fair values are included in the above totals and are evaluated for impairment on a periodic basis. All mortgage-backed securities in the above table are residential mortgage-backed securities and guaranteed by government sponsored entities. The amortized cost and fair value of Securities at December 31, 2017 by contractual maturity are shown below. Expected maturities may differ from contractual maturities because some issuers have the right to call or prepay certain obligations with or without call or prepayment penalties. Mortgage-backed and Equity Securities are not due at a single maturity date and are shown separately. Amortized Cost Fair Value Securities Available-for-Sale: Due in one year or less $ 2,706 $ 2,739 Due after one year through five years 23,789 24,531 Due after five years through ten years 78,661 81,215 Due after ten years 162,281 164,824 MBS/CMO - Residential 476,205 467,332 Equity Securities 353 353 Total $ 743,995 $ 740,994 2017 2016 2015 Proceeds from the Sales of Securities are summarized below: Available- for-Sale Available- for-Sale Available- for-Sale Proceeds from Sales $ 49,459 $ 165,102 $ 18,999 Gross Gains on Sales 596 1,979 725 Income Taxes on Gross Gains 209 693 254 The carrying value of securities pledged to secure repurchase agreements, public and trust deposits, and for other purposes as required by law was $165,404 and $186,572 as of December 31, 2017 and 2016, respectively. Below is a summary of securities with unrealized losses as of year-end 2017 and 2016, presented by length of time the securities have been in a continuous unrealized loss position: Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss At December 31, 2017 Obligations of State and Political Subdivisions $ 33,230 $ (237 ) $ 24,161 $ (624 ) $ 57,391 $ (861 ) MBS/CMO - Residential 172,354 (2,048 ) 250,520 (7,241 ) 422,874 (9,289 ) Equity Securities — — — — — — Total $ 205,584 $ (2,285 ) $ 274,681 $ (7,865 ) $ 480,265 $ (10,150 ) Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss At December 31, 2016 Obligations of State and Political Subdivisions $ 108,918 $ (3,678 ) $ — $ — $ 108,918 $ (3,678 ) MBS/CMO - Residential 356,040 (8,782 ) 47,271 (1,636 ) 403,311 (10,418 ) Equity Securities — — — — — — Total $ 464,958 $ (12,460 ) $ 47,271 $ (1,636 ) $ 512,229 $ (14,096 ) Securities are written down to fair value when a decline in fair value is not considered temporary. In estimating other-than-temporary losses, management considers many factors, including: (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, (3) whether the market decline was affected by macroeconomic conditions, and (4) whether the Company has the intent to sell the debt security or more likely than not will be required to sell the debt security before its anticipated recovery. The Company doesn’t intend to sell or expect to be required to sell these securities, and the decline in fair value is largely due to changes in market interest rates, therefore, the Company does not consider these securities to be other-than-temporarily impaired. All mortgage-backed securities and collateralized mortgages obligations (MBS/CMO - Residential) in the Company’s portfolio are guaranteed by government sponsored entities, are investment grade, and are performing as expected. The Company’s equity securities consist of one non-controlling investment in a single banking organization at December 31, 2017 and 2016. The original investment totaled $1,350 and other-than-temporary impairment was previously recorded totaling $997 . When a decline in fair value below cost is deemed to be other-than-temporary, the unrealized loss must be recognized as a charge to earnings.

Derivatives

Derivatives	12 Months Ended
	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives	Derivatives The Company executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. The notional amounts of these interest rate swaps and the offsetting counterparty derivative instruments were $87.8 million and $67.9 million at December 31, 2017 and 2016, respectively. These interest rate swaps are simultaneously hedged by offsetting interest rate swaps that the Company executes with a third party, such that the Company minimizes its net risk exposure resulting from such transactions with approved, reputable, independent counterparties with substantially matching terms. The agreements are considered stand alone derivatives and changes in the fair value of derivatives are reported in earnings as non-interest income. Credit risk arises from the possible inability of counterparties to meet the terms of their contracts. The Company’s exposure is limited to the replacement value of the contracts rather than the notional, principal or contract amounts. There are provisions in the agreements with the counterparties that allow for certain unsecured credit exposure up to an agreed threshold. Exposures in excess of the agreed thresholds are collateralized. In addition, the Company minimizes credit risk through credit approvals, limits, and monitoring procedures. The following table reflects the fair value hedges included in the Consolidated Balance Sheets as of: December 31, 2017 December 31, 2016 Notional Amount Fair Value Notional Amount Fair Value Included in Other Assets: Interest Rate Swaps $ 87,788 $ 1,564 $ 67,902 $ 1,291 Included in Other Liabilities: Interest Rate Swaps $ 87,788 $ 1,633 $ 67,902 $ 1,238 The following table presents the effect of derivative instruments on the Consolidated Statements of Income for the years ended December 31, 2017, 2016 and 2015 are as follows: 2017 2016 2015 Interest Rate Swaps: Included in Other Income $ 478 $ 1,207 $ 491

Loans

Loans	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Loans	Loans Loans were comprised of the following classifications at December 31: 2017 2016 Commercial: Commercial and Industrial Loans and Leases $ 486,668 $ 457,372 Commercial Real Estate Loans 926,729 856,094 Agricultural Loans 333,227 303,128 Retail: Home Equity Loans 152,187 133,575 Consumer Loans 67,475 59,945 Residential Mortgage Loans 178,733 183,290 Subtotal 2,145,019 1,993,404 Less: Unearned Income (3,381 ) (3,449 ) Allowance for Loan Losses (15,694 ) (14,808 ) Loans, net $ 2,125,944 $ 1,975,147 The following tables present the activity in the allowance for loan losses by portfolio class for the years ended December 31, 2017, 2016, and 2015: Commercial and Industrial Loans and Leases Commercial Real Estate Loans Agricultural Loans Home Equity Loans Consumer Loans Residential Mortgage Loans Unallocated Total December 31, 2017 Beginning Balance $ 3,725 $ 5,452 $ 4,094 $ 283 $ 235 $ 329 $ 690 $ 14,808 Provision for Loan Losses 1,147 (689 ) 840 78 517 44 (187 ) 1,750 Recoveries 14 48 9 8 272 63 — 414 Loans Charged-off (151 ) (220 ) (49 ) (39 ) (726 ) (93 ) — (1,278 ) Ending Balance $ 4,735 $ 4,591 $ 4,894 $ 330 $ 298 $ 343 $ 503 $ 15,694 Commercial and Industrial Loans and Leases Commercial Real Estate Loans Agricultural Loans Home Equity Loans Consumer Loans Residential Mortgage Loans Unallocated Total December 31, 2016 Beginning Balance $ 4,242 $ 6,342 $ 2,115 $ 383 $ 230 $ 414 $ 712 $ 14,438 Provision for Loan Losses (483 ) (846 ) 2,000 33 273 245 (22 ) 1,200 Recoveries 32 10 1 3 208 16 — 270 Loans Charged-off (66 ) (54 ) (22 ) (136 ) (476 ) (346 ) — (1,100 ) Ending Balance $ 3,725 $ 5,452 $ 4,094 $ 283 $ 235 $ 329 $ 690 $ 14,808 Commercial and Industrial Loans and Leases Commercial Real Estate Loans Agricultural Loans Home Equity Loans Consumer Loans Residential Mortgage Loans Unallocated Total December 31, 2015 Beginning Balance $ 4,627 $ 7,273 $ 1,123 $ 246 $ 354 $ 622 $ 684 $ 14,929 Provision for Loan Losses (451 ) (688 ) 992 160 (48 ) 7 28 — Recoveries 102 107 — 10 236 18 — 473 Loans Charged-off (36 ) (350 ) — (33 ) (312 ) (233 ) — (964 ) Ending Balance $ 4,242 $ 6,342 $ 2,115 $ 383 $ 230 $ 414 $ 712 $ 14,438 In determining the adequacy of the allowance for loan loss, general allocations are made for pools of loans, including non-classified loans, homogeneous portfolios of consumer and residential real estate loans, and loans within certain industry categories believed to present unique risk of loss. General allocations of the allowance are primarily made based on historical averages for loan losses for these portfolios, judgmentally adjusted for current economic factors and portfolio trends. Loan impairment is reported when full repayment under the terms of the loan is not expected. This methodology is used for all loans, including loans acquired with deteriorated credit quality if such loans perform worse than what was expected at the time of acquisition. For purchased loans, the assessment is made at the time of acquisition as well as over the life of loan. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported net, at the present value of estimated future cash flows using the loan’s existing rate, or at the fair value of collateral if repayment is expected solely from the collateral. Commercial and industrial loans, commercial real estate loans, and agricultural loans are evaluated individually for impairment. Smaller balance homogeneous loans are evaluated for impairment in total. Such loans include real estate loans secured by one-to-four family residences and loans to individuals for household, family and other personal expenditures. Individually evaluated loans on non-accrual are generally considered impaired. Impaired loans, or portions thereof, are charged off when deemed uncollectible. Specific allocations on impaired loans are determined by comparing the loan balance to the present value of expected cash flows or expected collateral proceeds. Allocations are also applied to categories of loans not considered individually impaired but for which the rate of loss is expected to be greater than historical averages, including non-performing consumer or residential real estate loans. Such allocations are based on past loss experience and information about specific borrower situations and estimated collateral values. The following tables present the balance in the allowance for loan losses and the recorded investment in loans by portfolio class and based on impairment method as of December 31, 2017 and 2016: December 31, 2017 Total Commercial and Industrial Loans and Leases Commercial Real Estate Loans Agricultural Loans Home Equity Loans Consumer Loans Residential Mortgage Loans Unallocated Allowance for Loan Losses: Ending Allowance Balance Attributable to Loans: Individually Evaluated for Impairment $ 2,228 $ 1,399 $ 829 $ — $ — $ — $ — $ — Collectively Evaluated for Impairment 13,455 3,333 3,759 4,894 330 298 338 503 Acquired with Deteriorated Credit Quality 11 3 3 — — — 5 — Total Ending Allowance Balance $ 15,694 $ 4,735 $ 4,591 $ 4,894 $ 330 $ 298 $ 343 $ 503 Loans: Loans Individually Evaluated for Impairment $ 11,633 $ 5,918 $ 5,552 $ 163 $ — $ — $ — n/m (2) Loans Collectively Evaluated for Impairment 2,133,752 481,152 917,036 336,849 152,757 67,647 178,311 n/m (2) Loans Acquired with Deteriorated Credit Quality 9,117 988 6,452 789 — — 888 n/m (2) Total Ending Loans Balance (1) $ 2,154,502 $ 488,058 $ 929,040 $ 337,801 $ 152,757 $ 67,647 $ 179,199 n/m (2) (1) Total recorded investment in loans includes $9,483 in accrued interest. (2) n/m = not meaningful December 31, 2016 Total Commercial and Industrial Loans and Leases Commercial Real Estate Loans Agricultural Loans Home Equity Loans Consumer Loans Residential Mortgage Loans Unallocated Allowance for Loan Losses: Ending Allowance Balance Attributable to Loans: Individually Evaluated for Impairment $ 255 $ 24 $ 231 $ — $ — $ — $ — $ — Collectively Evaluated for Impairment 14,448 3,698 5,172 4,046 283 230 329 690 Acquired with Deteriorated Credit Quality 105 3 49 48 — 5 — — Total Ending Allowance Balance $ 14,808 $ 3,725 $ 5,452 $ 4,094 $ 283 $ 235 $ 329 $ 690 Loans: Loans Individually Evaluated for Impairment $ 1,239 $ 113 $ 832 $ 294 $ — $ — $ — n/m (2) Loans Collectively Evaluated for Impairment 1,989,128 456,769 849,510 305,946 134,032 60,046 182,825 n/m (2) Loans Acquired with Deteriorated Credit Quality 11,048 1,656 7,688 706 — 53 945 n/m (2) Total Ending Loans Balance (1) $ 2,001,415 $ 458,538 $ 858,030 $ 306,946 $ 134,032 $ 60,099 $ 183,770 n/m (2) (1) Total recorded investment in loans includes $8,011 in accrued interest. (2) n/m = not meaningful The following tables present loans individually evaluated for impairment by class of loans as of December 31, 2017 and 2016: Unpaid Principal Balance (1) Recorded Investment Allowance for Loan Losses Allocated December 31, 2017 With No Related Allowance Recorded: Commercial and Industrial Loans and Leases $ 1,205 $ 1,166 $ — Commercial Real Estate Loans 1,812 1,495 — Agricultural Loans 919 749 — Subtotal 3,936 3,410 — With An Allowance Recorded: Commercial and Industrial Loans and Leases 4,804 4,763 1,402 Commercial Real Estate Loans 4,489 4,465 832 Agricultural Loans — — — Subtotal 9,293 9,228 2,234 Total $ 13,229 $ 12,638 $ 2,234 Loans Acquired With Deteriorated Credit Quality With No Related Allowance Recorded (Included in the Total Above) $ 1,255 $ 797 $ — Loans Acquired With Deteriorated Credit Quality With An Additional Allowance Recorded (Included in the Total Above) $ 252 $ 208 $ 6 (1) Unpaid Principal Balance is the remaining contractual payments gross of partial charge-offs and discounts. Unpaid Principal Balance (1) Recorded Investment Allowance for Loan Losses Allocated December 31, 2016 With No Related Allowance Recorded: Commercial and Industrial Loans and Leases $ 85 $ 29 $ — Commercial Real Estate Loans 1,278 784 — Agricultural Loans 356 294 — Subtotal 1,719 1,107 — With An Allowance Recorded: Commercial and Industrial Loans and Leases 148 107 27 Commercial Real Estate Loans 839 827 280 Agricultural Loans 588 497 48 Subtotal 1,575 1,431 355 Total $ 3,294 $ 2,538 $ 355 Loans Acquired With Deteriorated Credit Quality With No Related Allowance Recorded (Included in the Total Above) $ 1,018 $ 531 $ — Loans Acquired With Deteriorated Credit Quality With An Additional Allowance Recorded (Included in the Total Above) $ 910 $ 768 $ 100 (1) Unpaid Principal Balance is the remaining contractual payments gross of partial charge-offs and discounts. The following tables present loans individually evaluated for impairment by class of loans for the years ended December 31, 2017, 2016 and 2015: Average Recorded Investment Interest Income Recognized Cash Basis Recognized December 31, 2017 With No Related Allowance Recorded: Commercial and Industrial Loans and Leases $ 635 $ 27 $ 2 Commercial Real Estate Loans 1,184 57 29 Agricultural Loans 690 24 16 Subtotal 2,509 108 47 With An Allowance Recorded: Commercial and Industrial Loans and Leases 1,986 4 2 Commercial Real Estate Loans 2,842 17 6 Agricultural Loans 363 — — Subtotal 5,191 21 8 Total $ 7,700 $ 129 $ 55 Loans Acquired With Deteriorated Credit Quality With No Related Allowance Recorded (Included in the Total Above) $ 792 $ 25 $ 25 Loans Acquired With Deteriorated Credit Quality With An Additional Allowance Recorded (Included in the Total Above) $ 238 $ 19 $ 7 Average Recorded Investment Interest Income Recognized Cash Basis Recognized December 31, 2016 With No Related Allowance Recorded: Commercial and Industrial Loans and Leases $ 295 $ 29 $ 15 Commercial Real Estate Loans 1,688 92 73 Agricultural Loans 461 2 1 Subtotal 2,444 123 89 With An Allowance Recorded: Commercial and Industrial Loans and Leases 102 1 1 Commercial Real Estate Loans 1,587 6 2 Agricultural Loans 249 — — Subtotal 1,938 7 3 Total $ 4,382 $ 130 $ 92 Loans Acquired With Deteriorated Credit Quality With No Related Allowance Recorded (Included in the Total Above) $ 489 $ 21 $ 10 Loans Acquired With Deteriorated Credit Quality With An Additional Allowance Recorded (Included in the Total Above) $ 711 $ — $ — Average Recorded Investment Interest Income Recognized Cash Basis Recognized December 31, 2015 With No Related Allowance Recorded: Commercial and Industrial Loans and Leases $ 447 $ 29 $ 29 Commercial Real Estate Loans 1,282 104 103 Agricultural Loans 9 1 1 Subtotal 1,738 134 133 With An Allowance Recorded: Commercial and Industrial Loans and Leases 1,726 89 89 Commercial Real Estate Loans 2,840 5 3 Agricultural Loans — — — Subtotal 4,566 94 92 Total $ 6,304 $ 228 $ 225 Loans Acquired With Deteriorated Credit Quality With No Related Allowance Recorded (Included in the Total Above) $ 196 $ — $ — Loans Acquired With Deteriorated Credit Quality With An Additional Allowance Recorded (Included in the Total Above) $ — $ — $ — All classes of loans, including loans acquired with deteriorated credit quality, are generally placed on non-accrual status when scheduled principal or interest payments are past due for 90 days or more or when the borrower’s ability to repay becomes doubtful. For purchased loans, the determination is made at the time of acquisition as well as over the life of the loan. Uncollected accrued interest for each class of loans is reversed against income at the time a loan is placed on non-accrual. Interest received on such loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. All classes of loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. Loans are typically charged-off at 180 days past due, or earlier if deemed uncollectible. Exceptions to the non-accrual and charge-off policies are made when the loan is well secured and in the process of collection. The following tables present the recorded investment in non-accrual loans and loans past due 90 days or more still on accrual by class of loans as of December 31, 2017 and 2016: Loans Past Due 90 Days or More Non-Accrual & Still Accruing 2017 2016 2017 2016 Commercial and Industrial Loans and Leases $ 4,753 $ 86 $ — $ 2 Commercial Real Estate Loans 4,618 1,408 474 — Agricultural Loans 748 792 268 — Home Equity Loans 199 73 — — Consumer Loans 286 85 — — Residential Mortgage Loans 487 1,349 — — Total $ 11,091 $ 3,793 $ 742 $ 2 Loans Acquired With Deteriorated Credit Quality (Included in the Total Above) $ 866 $ 1,264 $ — $ — The following tables present the aging of the recorded investment in past due loans by class of loans as of December 31, 2017 and 2016: Total 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total Past Due Loans Not Past Due December 31, 2017 Commercial and Industrial Loans and Leases $ 488,058 $ 209 $ 1,365 $ 905 $ 2,479 $ 485,579 Commercial Real Estate Loans 929,040 1,229 1,650 677 3,556 925,484 Agricultural Loans 337,801 27 — 268 295 337,506 Home Equity Loans 152,757 366 93 199 658 152,099 Consumer Loans 67,647 246 97 286 629 67,018 Residential Mortgage Loans 179,199 2,850 1,247 261 4,358 174,841 Total (1) $ 2,154,502 $ 4,927 $ 4,452 $ 2,596 $ 11,975 $ 2,142,527 Loans Acquired With Deteriorated Credit Quality (Included in the Total Above) $ 9,117 $ 342 $ 74 $ 27 $ 443 $ 8,674 (1) Total recorded investment in loans includes $9,483 in accrued interest. Total 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total Past Due Loans Not Past Due December 31, 2016 Commercial and Industrial Loans and Leases $ 458,538 $ 20 $ 4 $ 77 $ 101 $ 458,437 Commercial Real Estate Loans 858,030 1,509 21 330 1,860 856,170 Agricultural Loans 306,946 84 50 610 744 306,202 Home Equity Loans 134,032 707 16 73 796 133,236 Consumer Loans 60,099 175 147 85 407 59,692 Residential Mortgage Loans 183,770 3,470 1,251 806 5,527 178,243 Total (1) $ 2,001,415 $ 5,965 $ 1,489 $ 1,981 $ 9,435 $ 1,991,980 Loans Acquired With Deteriorated Credit Quality (Included in the Total Above) $ 11,048 $ 130 $ — $ 627 $ 757 $ 10,291 Loans Acquired in Current Year (Included in the Total Above) $ 262,809 $ 2,752 $ 862 $ 1,126 $ 4,740 $ 258,069 (1) Total recorded investment in loans includes $8,011 in accrued interest. Troubled Debt Restructurings: In certain instances, the Company may choose to restructure the contractual terms of loans. A troubled debt restructuring occurs when the Bank grants a concession to the borrower that it would not otherwise consider due to a borrower’s financial difficulty. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without modification. This evaluation is performed under the Company’s internal underwriting policy. The Company uses the same methodology for loans acquired with deteriorated credit quality as for all other loans when determining whether the loan is a troubled debt restructuring. During the year ended December 31, 2017, there were three loans modified as troubled debt restructurings. During the year ended December 31, 2016, there were no loans modified as troubled debt restructurings. The following tables present the recorded investment of troubled debt restructurings by class of loans as of December 31, 2017 and 2016: Total Performing Non-Accrual (1) December 31, 2017 Commercial and Industrial Loans and Leases $ 258 $ 125 $ 133 Commercial Real Estate Loans 24 24 — Total $ 282 $ 149 $ 133 Total Performing Non-Accrual (1) December 31, 2016 Commercial and Industrial Loans and Leases $ 28 $ 28 $ — Commercial Real Estate Loans — — — Total $ 28 $ 28 $ — (1) The non-accrual troubled debt restructurings are included in the Non-Accrual Loan table presented on a previous page. The Company has no t committed to lending any additional amounts as of December 31, 2017 and 2016 to customers with outstanding loans that are classified as troubled debt restructurings. The following table presents loans by class modified as troubled debt restructurings that occurred during the year ended December 31, 2017: Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment December 31, 2017 Commercial and Industrial Loans and Leases 2 $ 477 $ 477 Commercial Real Estate Loans 1 28 28 Total 3 $ 505 $ 505 The troubled debt restructurings described above increased the allowance for loan losses by $149 and resulted in charge-offs of $0 during the year ending December 31, 2017. For the years ended December 31, 2016 and 2015, the Company had no loans modified as troubled debt restructurings. Additionally, there were no loans modified as troubled debt restructurings for which there was a payment default within twelve months following the modification during the years ended December 31, 2017, 2016 and 2015. A loan is considered to be in payment default once it is 30 days contractually past due under the modified terms. Credit Quality Indicators: The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. The Company classifies loans as to credit risk by individually analyzing loans. This analysis includes commercial and industrial loans, commercial real estate loans, and agricultural loans with an outstanding balance greater than $250. This analysis is typically performed on at least an annual basis. The Company uses the following definitions for risk ratings: Special Mention. Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date. Substandard. Loans classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Doubtful. Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass rated loans. Based on the most recent analysis performed, the risk category of loans by class of loans is as follows: Pass Special Mention Substandard Doubtful Total December 31, 2017 Commercial and Industrial Loans and Leases $ 462,212 $ 7,901 $ 17,945 $ — $ 488,058 Commercial Real Estate Loans 894,027 18,037 16,976 — 929,040 Agricultural Loans 304,032 27,288 6,481 — 337,801 Total $ 1,660,271 $ 53,226 $ 41,402 $ — $ 1,754,899 Loans Acquired with Deteriorated Credit Quality (Included in the Total Above) $ 2,604 $ 1,647 $ 3,978 $ — $ 8,229 Pass Special Mention Substandard Doubtful Total December 31, 2016 Commercial and Industrial Loans and Leases $ 437,353 $ 10,454 $ 10,731 $ — $ 458,538 Commercial Real Estate Loans 814,033 26,549 17,448 — 858,030 Agricultural Loans 287,975 14,670 4,301 — 306,946 Total $ 1,539,361 $ 51,673 $ 32,480 $ — $ 1,623,514 Loans Acquired with Deteriorated Credit Quality (Included in the Total Above) $ 1,897 $ 3,121 $ 5,032 $ — $ 10,050 Loans Acquired in Current Year (Included in the Total Above) $ 175,915 $ 11,638 $ 8,145 $ — $ 195,698 The Company considers the performance of the loan portfolio and its impact on the allowance for loan losses. For home equity, consumer and residential mortgage loan classes, the Company also evaluates credit quality based on the aging status of the loan, which was previously presented, and by payment activity. The following table presents the recorded investment in home equity, consumer and residential mortgage loans based on payment activity as of December 31, 2017 and 2016: Home Equity Loans Consumer Loans Residential Mortgage Loans December 31, 2017 Performing $ 152,558 $ 67,361 $ 178,712 Nonperforming 199 286 487 Total $ 152,757 $ 67,647 $ 179,199 Loans Acquired with Deteriorated Credit Quality (Included in the Total Above) $ — $ — $ 888 Home Equity Loans Consumer Loans Residential Mortgage Loans December 31, 2016 Performing $ 133,959 $ 60,014 $ 182,421 Nonperforming 73 85 1,349 Total $ 134,032 $ 60,099 $ 183,770 Loans Acquired with Deteriorated Credit Quality (Included in the Total Above) $ — $ 53 $ 945 The following table presents financing receivables purchased and/or sold during the year by portfolio segment: Commercial and Industrial Loans and Leases Commercial Real Estate Loans Total December 31, 2017 Purchases $ 800 $ 4,747 $ 5,547 Sales — 1,106 1,106 Commercial and Industrial Loans and Leases Commercial Real Estate Loans Total December 31, 2016 Purchases $ — $ 5,383 $ 5,383 Sales — 2,029 2,029 Contractually required payments receivable of loans purchased with evidence of credit deterioration during the year ended December 31, 2016 are included in the table below. The value of the purchased loans included in the table are as of acquisition date. There were no such loans purchased during the year ended December 31, 2017. 2017 2016 Commercial and Industrial Loans $ — $ 220 Commercial Real Estate Loans — 10,612 Agricultural Loans — 896 Home Equity Loans — — Consumer Loans — 87 Residential Mortgage Loans — 2,279 Total $ — $ 14,094 Cash Flows Expected to be Collected at Acquisition $ — $ 11,051 Fair Value of Acquired Loans at Acquisition — 8,807 The Company has purchased loans, for which there was, at acquisition, evidence of deterioration of credit quality since origination and it was probable, at acquisition, that all contractually required payments would not be collected. The recorded investment of those loans at December 31 in the years presented is as follows: 2017 2016 2015 Commercial and Industrial Loans $ 988 $ 1,656 $ 1,325 Commercial Real Estate Loans 6,452 7,688 5,363 Agricultural Loans 789 706 — Consumer Loans — 53 — Residential Mortgage Loans 888 945 867 Total $ 9,117 $ 11,048 $ 7,555 Carrying Amount, Net of Allowance $ 9,106 $ 10,943 $ 7,555 Accretable yield, or income expected to be collected, is as follows: 2017 2016 2015 Balance at January 1 $ 2,521 $ 1,279 $ 1,685 New Loans Purchased — 1,395 — Accretion of Income (425 ) (943 ) (483 ) Reclassifications from Non-accretable Difference 638 985 104 Charge-off of Accretable Yield — (195 ) (27 ) Balance at December 31 $ 2,734 $ 2,521 $ 1,279 For those purchased loans disclosed above, the Company increased the allowances for loan losses by $11 , $107 , and $0 during the years ended December 31, 2017, 2016, and 2015. The Company reversed allowances for loan losses of $110 , $ 2 , and $54 during the years ended December 31, 2017, 2016, and 2015. The carrying amount of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process according to local requirements of the applicable jurisdiction totaled $14 and $202 as of December 31, 2017 and 2016. Certain directors, executive officers, and principal shareholders of the Company, including their immediate families and companies in which they are principal owners, were loan customers of the Company during 2017. A summary of the activity of these loans follows: Balance January 1, 2017 Additions Changes in Persons Included Deductions Balance December 31, 2017 Collected Charged-off $ 14,276 $ 11,340 $ — $ (9,754 ) $ — $ 15,862

Premises, Furniture, and Equipm

Premises, Furniture, and Equipment	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Premises, Furniture, and Equipment	Premises, Furniture, and Equipment Premises, furniture, and equipment was comprised of the following classifications at December 31: 2017 2016 Land $ 11,541 $ 10,255 Buildings and Improvements 60,076 55,676 Furniture and Equipment 28,902 26,830 Total Premises, Furniture and Equipment 100,519 92,761 Less: Accumulated Depreciation (46,273 ) (44,531 ) Total $ 54,246 $ 48,230 Depreciation expense was $3,933 , $3,774 and $3,310 for 2017, 2016 and 2015, respectively. The Company leases three of its branch buildings under a capital lease. These lease arrangements require monthly payments through 2033 . The Company has included the leases in buildings and improvements as follows: 2017 2016 Capital Leases $ 4,219 $ 4,219 Less: Accumulated Depreciation (1,312 ) (1,102 ) Total $ 2,907 $ 3,117 The following is a schedule of future minimum lease payments under the capitalized leases, together with the present value of net minimum lease payments at year end 2017: 2018 $ 519 2019 519 2020 519 2021 519 2022 519 Thereafter 4,511 Total minimum lease payments 7,106 Less: Amount representing interest (3,456 ) Present Value of Net Minimum Lease Payments $ 3,650

Deposits

Deposits	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Deposits	Deposits At year end 2017, stated maturities of time deposits were as follows: 2018 $ 221,568 2019 55,575 2020 58,106 2021 37,081 2022 15,376 Thereafter 179 Total $ 387,885 Time deposits of $250 or more and Brokered CDs at December 31, 2017 and 2016 were $119,802 and $92,624 , respectively. Time deposits originated from outside the geographic area, generally through brokers, totaled $0 and $9,083 at December 31, 2017 and 2016, respectively.

FHLB Advances and Other Borrowi

FHLB Advances and Other Borrowings	12 Months Ended
	Dec. 31, 2017
Advances from Federal Home Loan Banks [Abstract]
FHLB Advances and Other Borrowings	FHLB Advances and Other Borrowings The Company’s funding sources include Federal Home Loan Bank advances, borrowings from other third party correspondent financial institutions, issuance and sale of subordinated debt and other capital securities, and repurchase agreements. Information regarding each of these types of borrowings or other indebtedness is as follows: December 31, 2017 2016 Long-term Advances from Federal Home Loan Bank collateralized by qualifying mortgages, investment securities, and mortgage-backed securities $ 126,836 $ 105,820 Junior Subordinated Debentures assumed from American Community Bancorp, Inc. 5,624 5,474 Junior Subordinated Debentures assumed from River Valley Bancorp, Inc. 5,607 5,501 Capital Lease Obligation 3,650 3,765 Long-term Borrowings 141,717 120,560 Overnight Variable Rate Advances from Federal Home Loan Bank collateralized by qualifying mortgages, investment securities, and mortgage-backed securities $ 92,000 $ 91,500 Federal Funds Purchased — 3,642 Repurchase Agreements 41,499 42,412 Short-term Borrowings 133,499 137,554 Total Borrowings $ 275,216 $ 258,114 Repurchase agreements, which are classified as secured borrowings, generally mature within one day of the transaction date. Repurchase agreements are reflected at the amount of cash received in connection with the transaction. The Company may be required to provide additional collateral based on the value of the underlying securities. 2017 2016 Average Daily Balance During the Year $ 40,476 $ 33,317 Average Interest Rate During the Year 0.47 % 0.39 % Maximum Month-end Balance During the Year $ 47,934 $ 45,313 Weighted Average Interest Rate at Year-end 0.50 % 0.50 % At December 31, 2017, interest rates on the fixed rate long-term FHLB advances ranged from 1.36% to 7.22% with a weighted average rate of 1.84% . At December 31, 2016 interest rates on the fixed rate long-term FHLB advances ranged from 0.92% to 7.22% with a weighted average rate of 1.67% . At December 31, 2017 and 2016, the Company had no advances containing options whereby the FHLB may convert a fixed rate advance to an adjustable rate advance. At December 31, 2016, the parent company had a $20 million line of credit with no outstanding balance. The line of credit matured December 27, 2017. Interest on the line of credit is based upon 90-day LIBOR plus 2.875% and includes an unused commitment fee of 0.25% . At December 31, 2017, scheduled principal payments on long-term FHLB Advances are as follows: 2018 $ 40,210 2019 31,075 2020 25,551 2021 5,000 2022 — Thereafter 25,000 Total $ 126,836 The Company assumed the obligations of junior subordinated debentures through the acquisitions of American Community Bancorp, Inc. and River Valley Bancorp. The junior subordinated debentures were issued to ACB Capital Trust I, ACB Capital Trust II and RIVR Statutory Trust I. The trusts are wholly owned by the Company. In accordance with accounting guidelines, the trusts are not consolidated with the Company's financials, but rather the subordinated debentures are shown as borrowings. The Company guarantees payment of distributions on the trust preferred securities issued by ACB Trust I, ACB Trust II and RIVR Statutory Trust I. Interest is payable on a quarterly basis. These securities qualify as Tier 1 capital (with certain limitations) for regulatory purposes. $11,060 of the junior subordinated debentures were treated as Tier 1 capital for regulatory capital purposes as of December 31, 2017. $10,809 of the junior subordinated debentures were treated as Tier 1 capital for regulatory capital purposes as of December 31, 2016. As a result of the acquisitions of American Community and River Valley these liabilities were recorded at fair value at the acquisition date with the discount amortizing into interest expense over the life of the liability, ultimately accreting to the issuance amount disclosed below. The following table summarizes the terms of each issuance: Date of Issuance Issuance Amount Carrying Amount at December 31, 2017 Variable Rate Rate as of December 31, 2017 Rate as of December 31, 2016 Maturity Date ACB Trust I 5/6/2005 $ 5,155 $ 3,553 90 day LIBOR + 2.15% 3.84 % 3.15 % May, 2035 ACB Trust II 7/15/2005 3,093 2,071 90 day LIBOR + 1.85% 3.30 % 2.77 % July, 2035 RIVR Statutory Trust 1 3/26/2003 7,217 5,607 3-Month LIBOR + 3.15% 4.82 % 4.15 % March, 2033 See also Note 5 regarding the capital lease obligation. Deposits from principal officers, directors, and their affiliates at year-end 2017 and 2016 were $ 49.9 million and $ 48.2 million, respectively.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2017
Stockholders' Equity Note [Abstract]
Shareholders' Equity	Shareholders’ Equity Banks and bank holding companies are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can initiate regulatory action. The final rules implementing Basel Committee on Banking Supervision's capital guidelines for U.S. banks (Basel III rules) became effective for the Company on January 1, 2015 with full compliance with all of the requirements being phased in over a multi- year schedule and fully phased in by January 1, 2019. Under the Basel III rules, the Company must hold a capital conservation buffer above the adequately capitalized risk-based capital ratios. The capital conservation buffer is being phased in from 0% for 2015 to 2.5% on January 1, 2019. The capital conservation buffer for 2017 is 1.25% and for 2016 is 0 .625% . The net unrealized gain or loss on available for sale securities is not included in computing regulatory capital. At December 31, 2017, the Company and Bank meet all capital adequacy requirements to which they are subject. Prompt corrective action regulations provide five classifications, including well-capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. If adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. At year end 2017 and 2016, the most recent regulatory notifications categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the institution's category. At December 31, 2017, consolidated and bank actual capital and minimum required levels are presented below: Actual: Minimum Required For Capital Adequacy Purposes: Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Amount Ratio Amount Ratio (1) Amount Ratio Total Capital (to Risk Weighted Assets) Consolidated $ 339,391 13.62 % $ 199,363 8.00 % N/A N/A Bank 305,773 12.29 199,093 8.00 $ 248,866 10.00 % Tier 1 (Core) Capital (to Risk Weighted Assets) Consolidated $ 323,697 12.99 % $ 149,522 6.00 % N/A N/A Bank 290,079 11.66 149,320 6.00 $ 199,093 8.00 % Common Tier 1, (CET 1) Capital Ratio (to Risk Weighted Assets) Consolidated $ 312,637 12.55 % $ 112,142 4.50 % N/A N/A Bank 290,079 11.66 111,990 4.50 $ 161,763 6.50 % Tier 1 Core Capital (to Average Assets) Consolidated $ 323,697 10.71 % $ 120,862 4.00 % N/A N/A Bank 290,079 9.63 120,509 4.00 $ 150,637 5.00 % (1) Excludes capital conservation buffer. At December 31, 2016, consolidated and bank actual capital and minimum required levels are presented below: Actual: Minimum Required For Capital Adequacy Purposes: Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Amount Ratio Amount Ratio (1) Amount Ratio Total Capital (to Risk Weighted Assets) Consolidated $ 307,754 13.30 % $ 185,117 8.00 % N/A N/A Bank 288,793 12.48 185,104 8.00 $ 231,380 10.00 % Tier 1 (Core) Capital (to Risk Weighted Assets) Consolidated $ 292,946 12.66 % $ 138,838 6.00 % N/A N/A Bank 273,985 11.84 138,828 6.00 $ 185,104 8.00 % Common Tier 1, (CET 1) Capital Ratio (to Risk Weighted Assets) Consolidated $ 282,138 12.19 % $ 104,129 4.50 % N/A N/A Bank 273,985 11.84 104,121 4.50 $ 150,397 6.50 % Tier 1 Core Capital (to Average Assets) Consolidated $ 292,946 10.09 % $ 116,165 4.00 % N/A N/A Bank 273,985 9.46 115,853 4.00 $ 144,816 5.00 % (1) Excludes capital conservation buffer. The Company and the bank at year end 2017 and 2016 were categorized as well-capitalized. There have been no conditions or events that management believes has changed the classification of the bank under the prompt corrective action regulations since the last notification from regulators. Regulations require the maintenance of certain capital levels at the bank, and may limit the dividends payable by the affiliate to the holding company, or by the holding company to its shareholders. At December 31, 2017 the bank had $64,000 in retained earnings available for payment of dividends to the parent company without prior regulatory approval. Equity Plans and Equity Based Compensation The Company maintains three equity incentive plans under which stock options, restricted stock, and other equity incentive awards can be granted. At December 31, 2017, the Company has reserved 386,754 shares of Common Stock (as adjusted for subsequent stock dividends and subject to further customary anti-dilution adjustments) for the purpose of issuance pursuant to outstanding and future grants of options, restricted stock, and other equity awards to officers, directors and other employees of the Company. Stock Options Options may be designated as incentive stock options or as nonqualified stock options. While the date after which options are first exercisable is determined by the appropriate committee of the Board of Directors of the Company or, in the case of options granted to directors, by the Board of Directors, no stock option may be exercised after ten years from the date of grant ( twenty years in the case of nonqualified stock options). The exercise price of stock options granted pursuant to the plans must be no less than the fair market value of the Common Stock on the date of the grant. The plans authorize an optionee to pay the exercise price of options in cash or in common shares of the Company or in some combination of cash and common shares. An optionee may tender already-owned common shares to the Company in exercise of an option. Certain of these plans authorize an optionee to surrender the value of an unexercised option in payment of an equivalent amount of the exercise price of the option. The Company typically issues authorized but unissued common shares upon the exercise of options. The following table presents information related to stock options under the Company’s equity incentive plan during the years ended 2017, 2016 and 2015: 2017 2016 2015 Intrinsic Value of Options Exercised $ — $ 137 $ 559 Cash Received from Option Exercises $ — $ — $ — Tax Benefit of Option Exercises $ — $ 54 $ 224 Weighted Average Fair Value of Options Granted $ — $ — $ — The intrinsic value for stock options is calculated based on the exercise price of the underlying awards and the market price of common stock as of the reporting date. During 2017, 2016 and 2015, the Company granted no options, and recorded no stock compensation expense related to option grants. The Company recorded no other stock compensation expense applicable to options during the years ended December 31, 2017, 2016 and 2015 because all outstanding options were fully vested prior to 2007. Restricted Stock During the periods presented, awards of long-term incentives were granted in the form of restricted stock. Awards that were granted to management and selected other employees under a management and employee incentive plan were granted in tandem with cash credit entitlements (typically in the form of 60% restricted stock grants and 40% cash credit entitlements). The management and employee restricted stock grants and tandem cash credit entitlements awarded will vest in three equal installments of 33.3% with the first annual vesting on December 5 th of the year of the grant and on December 5 th of the next two succeeding years. Awards that were granted to directors as additional retainer for their services do not include any cash credit entitlement. These director restricted stock grants are subject to forfeiture in the event that the recipient of the grant does not continue in service as a director of the Company through December 5th of the year after grant or do not satisfy certain meeting attendance requirements, at which time they generally vest 100 percent . For measuring compensation costs, restricted stock awards are valued based upon the market value of the common shares on the date of grant. The following table presents expense recorded for restricted stock and cash entitlements as well as the related tax effect for the years ended 2017, 2016, and 2015: 2017 2016 2015 Restricted Stock Expense $ 1,246 $ 1,407 $ 963 Cash Entitlement Expense 657 570 580 Tax Effect (746 ) (782 ) (615 ) Net of Tax $ 1,157 $ 1,195 $ 928 Unrecognized expense associated with the restricted stock grants and cash entitlements totaled $1,983 , $1,774 , and $1,542 as of December 31, 2017, 2016, and 2015, respectively. The following table presents information on restricted stock grants outstanding for the period shown: Year Ended December 31, 2017 Restricted Shares Weighted Average Market Price at Grant Outstanding at Beginning of Period 53,163 $ 22.32 Granted 43,386 31.77 Issued and Vested (49,733 ) 24.79 Forfeited (510 ) 27.22 Outstanding at End of Period 46,306 $ 28.47 Employee Stock Purchase Plan The Company maintains an Employee Stock Purchase Plan whereby eligible employees have the option to purchase the Company’s common stock at a discount. The purchase price of the shares under this Plan has been set at 95% of the fair market value of the Company’s common stock as of the last day of the plan year. The plan provided for the purchase of up to 750,000 shares of common stock, which the Company may obtain by purchases on the open market or from private sources, or by issuing authorized but unissued common shares. At December 31, 2017, there were 557,203 shares available for future issuance under this plan. Funding for the purchase of common stock is from employee and Company contributions. In 2017, the Company recorded $32 of expense, $19 net of tax, for the employee stock purchase plan. In 2016, the Company recorded $82 of expense, $50 net of tax, for the employee stock purchase plan. In 2015, the Company recorded $22 of expense, $13 net of tax, for the employee stock purchase plan. There was no unrecognized compensation expense as of December 31, 2017, 2016 and 2015 for the Employee Stock Purchase Plan. Stock Repurchase Plan On April 26, 2001, the Company announced that its Board of Directors approved a stock repurchase program for up to 911,631 of the outstanding Common Shares of the Company. Shares may be purchased from time to time in the open market and in large block privately negotiated transactions. The Company is not obligated to purchase any shares under the program, and the program may be discontinued at any time before the maximum number of shares specified by the program are purchased. The Board of Directors established no expiration date for this program. As of December 31, 2017, the Company had purchased 502,447 shares under the program. No shares were purchased under the program during the years ended December 31, 2017, 2016 and 2015. Common Stock Split On March 27, 2017, the Company declared a 3-for-2 stock split on the Company's authorized and outstanding common shares. The stock split was distributed on April 21, 2017, to shareholders of record as of April 6, 2017. All share and per share data in this Annual Report on Form 10-K relating to a date or period that precedes April 21, 2017 have been adjusted to retroactively reflect the stock split.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2017
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit Plans The Company provides a contributory trusteed 401(k) deferred compensation and profit sharing plan, which covers substantially all employees. The Company agrees to match certain employee contributions under the 401(k) portion of the plan, while profit sharing contributions are discretionary and are subject to determination by the Board of Directors. Company contributions were $1,328 , $1,121 , and $999 for 2017, 2016, and 2015, respectively. The Company self-insures employee health benefits. Stop loss insurance covers annual losses exceeding $150 per covered family as well as an aggregating specific deductible of $255 for the Company. Management’s policy is to establish a reserve for claims not submitted by a charge to earnings based on prior experience. Charges to earnings were $4,192 , $3,153 , and $2,666 for 2017, 2016, and 2015, respectively. The Company maintains deferred compensation plans for the benefit of certain directors and officers. Under the plans, the Company agrees in return for the directors and officers deferring the receipt of a portion of their current compensation, to pay a retirement benefit computed as the amount of the compensation deferred plus accrued interest at a variable rate. Accrued benefits payable totaled $1,896 and $1,882 at December 31, 2017 and 2016. Deferred compensation expense was $187 , $297 , and $149 for 2017, 2016, and 2015, respectively. In conjunction with the plans, the Company purchased life insurance on certain directors and officers. The Company entered into early retirement agreements with certain officers of the Company. Accrued benefits payable as a result of the agreements totaled $84 and $136 at December 31, 2017 and 2016, respectively. Expense associated with these agreements totaled $48 , $ 0 , and $215 during 2017, 2016, and 2015, respectively. The benefits under the agreements will be paid through 2018. Postretirement Medical and Life Benefit Plan The Company has an unfunded postretirement benefit plan covering substantially all of its employees. The medical plan is contributory with the participants’ contributions adjusted annually; the life insurance plans are noncontributory. Changes in Accumulated Postretirement Benefit Obligations: 2017 2016 Obligation at the Beginning of Year $ 814 $ 783 Unrecognized Loss (Gain) 226 24 Components of Net Periodic Postretirement Benefit Cost Service Cost 50 41 Interest Cost 29 29 Net Expected Benefit Payments (58 ) (63 ) Obligation at End of Year $ 1,061 $ 814 Components of Postretirement Benefit Expense: 2017 2016 2015 Service Cost $ 50 $ 41 $ 42 Interest Cost 29 29 26 Amortization of Unrecognized Net (Gain) Loss 8 6 5 Net Postretirement Benefit Expense 87 76 73 Net (Gain) Loss During Period Recognized in Other Comprehensive Income (Loss) 218 18 17 Total Recognized in Net Postretirement Benefit Expense and Other Comprehensive Income $ 305 $ 94 $ 90 Assumptions Used to Determine Net Periodic Cost and Benefit Obligations: 2017 2016 2015 Discount Rate 3.35 % 3.72 % 3.82 % Assumed Health Care Cost Trend Rates at Year-end: 2017 2016 Health Care Cost Trend Rate Assumed for Next Year 8.00 % 8.00 % Rate that the Cost Trend Rate Gradually Declines to 5.00 % 5.00 % Year that the Rate Reaches the Rate it is Assumed to Remain at 2023 2022 Assumed health care cost trend rates have a significant effect on the amounts reported for the health care plan. A one-percentage-point change in assumed health care cost trend rates would have the following effects as of December 31, 2017: One-Percentage-Point Increase One-Percentage-Point Decrease Effect on Total of Service and Interest Cost $ 7 $ (6 ) Effect on Postretirement Benefit Obligation $ 66 $ (59 ) Contributions The Company expects to contribute $84 to its postretirement medical and life insurance plan in 2018. Estimated Future Benefits The following postretirement benefit payments, which reflect expected future service, are expected to be paid: 2018 $ 84 2019 91 2020 86 2021 77 2022 85 2023-2027 547 Multi-Employer Pension Plan Through the acquisition of River Valley Bancorp, the Company acquired a participation in a multi-employer defined benefit pension plan. Effective December 31, 2015, the plan was frozen. Pension expense was approximately $ 63 and $ 54 during 2017 and 2016, respectively. Specific plan asset and accumulated benefit information for the Company's portion of the fund is not available. Under the Employee Retirement Income and Security Act of 1974 ("ERISA"), a contributor to a multi-employer pension plan may be liable in the event of complete or partial withdrawal for the benefit payments guaranteed under ERISA, but currently there is no intention to withdraw. The Company participates in the Pentegra Defined Benefit Plan for Financial Institutions (the "Pentegra DB Plan"), a tax-qualified defined-benefit pension plan. The Pentegra DB Plan operates as a multi-employer plan for accounting purposes and as a multiple-employer plan under ERISA and the Internal Revenue Code. There are no collective bargaining agreements in place that require contributions to the Pentegra DB Plan. The Pentegra DB Plan is a single plan under Internal Revenue Code Section 413(c) and, as a result, all of the assets stand behind all of the liabilities. Accordingly, under the Pentegra DB Plan, contributions made by a participating employer may be used to provide benefits to participants of other participating employers. Total contributions made to the Pentegra DB Plan, as reported on Form 5500, equal $153,186 and $163,183 for the plan years ended June 30, 2016 and 2015, respectively. The Company's contributions to the Pentegra DB Plan for the fiscal year ending December 31, 2017 were not more than 5% of total contributions to the Pentegra DB Plan.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The provision for income taxes consists of the following: 2017 2016 2015 Current Federal $ 10,481 $ 11,468 $ 11,407 Current State 473 447 898 Deferred Federal 276 1,611 (920 ) Deferred State 304 420 221 Total $ 11,534 $ 13,946 $ 11,606 Income tax expense is reconciled to the 35% statutory rate applied to the pre-tax income for the years presented in the table below: 2017 2016 2015 Statutory Rate Times Pre-tax Income $ 18,274 $ 17,195 $ 14,585 Add (Subtract) the Tax Effect of: Income from Tax-exempt Loans and Investments (3,304 ) (2,929 ) (2,250 ) State Income Tax, Net of Federal Tax Effect 505 564 727 General Business Tax Credits (715 ) (621 ) (750 ) Company Owned Life Insurance (469 ) (346 ) (296 ) Revaluation of Deferred Tax Assets/Liabilities due to Tax Reform (2,284 ) — — Other Differences (473 ) 83 (410 ) Total Income Taxes $ 11,534 $ 13,946 $ 11,606 The net deferred tax liability at December 31 consists of the following: 2017 2016 Deferred Tax Assets: Allowance for Loan Losses $ 3,645 $ 5,269 Unrealized Loss on Securities 665 3,456 Deferred Compensation and Employee Benefits 702 1,146 Other-than-temporary Impairment 243 377 Accrued Expenses 645 956 Business Combination Fair Value Adjustments 1,041 2,838 Pension and Postretirement Plans 100 67 Non-Accrual Loan Interest Income 152 158 Net Operating Loss Carryforward — 196 Unused Tax Credits — 86 Other 302 472 Total Deferred Tax Assets 7,495 15,021 Deferred Tax Liabilities: Depreciation (1,309 ) (1,612 ) Leasing Activities, Net (7,343 ) (9,845 ) FHLB Stock Dividends (196 ) (304 ) Prepaid Expenses (368 ) (461 ) Intangibles (597 ) (1,113 ) Deferred Loan Fees (483 ) (691 ) Mortgage Servicing Rights (133 ) (231 ) General Business Tax Credits — (235 ) Other (1,098 ) (1,692 ) Total Deferred Tax Liabilities (11,527 ) (16,184 ) Valuation Allowance — — Net Deferred Tax Liability $ (4,032 ) $ (1,163 ) On December 22, 2017, the U.S. government enacted comprehensive tax reform legislation commonly referred to as the Tax Cuts and Jobs Act of 2017 (the “Tax Act”). Among other things, the Tax Act includes significant changes to the U.S. corporate income tax system, including: reducing the federal corporate rate from 35% to 21%; modifying the rules regarding limitations on certain deductions for executive compensation; introducing a capital investment deduction in certain circumstances; placing certain limitations on the interest deduction; and modifying the rules regarding the usability of net operating losses. Based upon its initial analysis of the Tax Act, the Company revalued its deferred tax assets and deferred tax liabilities at December 31, 2017 and, as a result, recorded a $2,284 [reduction in income tax expense] during the fourth quarter of 2017. This benefit was based on reasonable estimates by the Company of certain income tax effects of the Tax Act. Under the Internal Revenue Code, through 1996 three acquired banking companies, which are now a part of the Company’s single banking subsidiary, were allowed a special bad debt deduction related to additions to tax bad debt reserves established for the purpose of absorbing losses. The acquired banks were formerly known as River Valley Financial Bank (acquired in March 2016), Peoples Community Bank (acquired in October 2005) and First American Bank (acquired in January 1999). Subject to certain limitations, these Banks were permitted to deduct from taxable income an allowance for bad debts based on a percentage of taxable income before such deductions or actual loss experience. The Banks generally computed its annual addition to its bad debt reserves using the percentage of taxable income method; however, due to certain limitations in 1996, the Banks were only allowed a deduction based on actual loss experience. Retained earnings at December 31, 2017, include approximately $5,095 for which no provision for federal income taxes has been made. This amount represents allocations of income for allowable bad debt deductions. Reduction of amounts so allocated for purposes other than tax bad debt losses will create taxable income, which will be subject to the then current corporate income tax rate. It is not contemplated that amounts allocated to bad debt deductions will be used in any manner to create taxable income. The unrecorded deferred income tax liability on the above amount at December 31, 2017 was approximately $1,070 . Unrecognized Tax Benefits The Company had no unrecognized tax benefits as of December 31, 2017, 2016, and 2015, and did no t recognize any increase in unrecognized benefits during 2017 relative to any tax positions taken in 2017. Should the accrual of any interest or penalties relative to unrecognized tax benefits be necessary, it is the Company’s policy to record such accruals in its income tax expense accounts; no such accruals existed as of December 31, 2017, 2016, and 2015. The Company and its corporate subsidiaries file a consolidated U.S. Federal income tax return, which is subject to examination for all years after 2013. The Company and its corporate subsidiaries doing business in Indiana file a combined Indiana unitary return, which is subject to examination for all years after 2013.

Common Stock Split

Common Stock Split	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Common Stock Split	Shareholders’ Equity Banks and bank holding companies are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can initiate regulatory action. The final rules implementing Basel Committee on Banking Supervision's capital guidelines for U.S. banks (Basel III rules) became effective for the Company on January 1, 2015 with full compliance with all of the requirements being phased in over a multi- year schedule and fully phased in by January 1, 2019. Under the Basel III rules, the Company must hold a capital conservation buffer above the adequately capitalized risk-based capital ratios. The capital conservation buffer is being phased in from 0% for 2015 to 2.5% on January 1, 2019. The capital conservation buffer for 2017 is 1.25% and for 2016 is 0 .625% . The net unrealized gain or loss on available for sale securities is not included in computing regulatory capital. At December 31, 2017, the Company and Bank meet all capital adequacy requirements to which they are subject. Prompt corrective action regulations provide five classifications, including well-capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. If adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. At year end 2017 and 2016, the most recent regulatory notifications categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the institution's category. At December 31, 2017, consolidated and bank actual capital and minimum required levels are presented below: Actual: Minimum Required For Capital Adequacy Purposes: Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Amount Ratio Amount Ratio (1) Amount Ratio Total Capital (to Risk Weighted Assets) Consolidated $ 339,391 13.62 % $ 199,363 8.00 % N/A N/A Bank 305,773 12.29 199,093 8.00 $ 248,866 10.00 % Tier 1 (Core) Capital (to Risk Weighted Assets) Consolidated $ 323,697 12.99 % $ 149,522 6.00 % N/A N/A Bank 290,079 11.66 149,320 6.00 $ 199,093 8.00 % Common Tier 1, (CET 1) Capital Ratio (to Risk Weighted Assets) Consolidated $ 312,637 12.55 % $ 112,142 4.50 % N/A N/A Bank 290,079 11.66 111,990 4.50 $ 161,763 6.50 % Tier 1 Core Capital (to Average Assets) Consolidated $ 323,697 10.71 % $ 120,862 4.00 % N/A N/A Bank 290,079 9.63 120,509 4.00 $ 150,637 5.00 % (1) Excludes capital conservation buffer. At December 31, 2016, consolidated and bank actual capital and minimum required levels are presented below: Actual: Minimum Required For Capital Adequacy Purposes: Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Amount Ratio Amount Ratio (1) Amount Ratio Total Capital (to Risk Weighted Assets) Consolidated $ 307,754 13.30 % $ 185,117 8.00 % N/A N/A Bank 288,793 12.48 185,104 8.00 $ 231,380 10.00 % Tier 1 (Core) Capital (to Risk Weighted Assets) Consolidated $ 292,946 12.66 % $ 138,838 6.00 % N/A N/A Bank 273,985 11.84 138,828 6.00 $ 185,104 8.00 % Common Tier 1, (CET 1) Capital Ratio (to Risk Weighted Assets) Consolidated $ 282,138 12.19 % $ 104,129 4.50 % N/A N/A Bank 273,985 11.84 104,121 4.50 $ 150,397 6.50 % Tier 1 Core Capital (to Average Assets) Consolidated $ 292,946 10.09 % $ 116,165 4.00 % N/A N/A Bank 273,985 9.46 115,853 4.00 $ 144,816 5.00 % (1) Excludes capital conservation buffer. The Company and the bank at year end 2017 and 2016 were categorized as well-capitalized. There have been no conditions or events that management believes has changed the classification of the bank under the prompt corrective action regulations since the last notification from regulators. Regulations require the maintenance of certain capital levels at the bank, and may limit the dividends payable by the affiliate to the holding company, or by the holding company to its shareholders. At December 31, 2017 the bank had $64,000 in retained earnings available for payment of dividends to the parent company without prior regulatory approval. Equity Plans and Equity Based Compensation The Company maintains three equity incentive plans under which stock options, restricted stock, and other equity incentive awards can be granted. At December 31, 2017, the Company has reserved 386,754 shares of Common Stock (as adjusted for subsequent stock dividends and subject to further customary anti-dilution adjustments) for the purpose of issuance pursuant to outstanding and future grants of options, restricted stock, and other equity awards to officers, directors and other employees of the Company. Stock Options Options may be designated as incentive stock options or as nonqualified stock options. While the date after which options are first exercisable is determined by the appropriate committee of the Board of Directors of the Company or, in the case of options granted to directors, by the Board of Directors, no stock option may be exercised after ten years from the date of grant ( twenty years in the case of nonqualified stock options). The exercise price of stock options granted pursuant to the plans must be no less than the fair market value of the Common Stock on the date of the grant. The plans authorize an optionee to pay the exercise price of options in cash or in common shares of the Company or in some combination of cash and common shares. An optionee may tender already-owned common shares to the Company in exercise of an option. Certain of these plans authorize an optionee to surrender the value of an unexercised option in payment of an equivalent amount of the exercise price of the option. The Company typically issues authorized but unissued common shares upon the exercise of options. The following table presents information related to stock options under the Company’s equity incentive plan during the years ended 2017, 2016 and 2015: 2017 2016 2015 Intrinsic Value of Options Exercised $ — $ 137 $ 559 Cash Received from Option Exercises $ — $ — $ — Tax Benefit of Option Exercises $ — $ 54 $ 224 Weighted Average Fair Value of Options Granted $ — $ — $ — The intrinsic value for stock options is calculated based on the exercise price of the underlying awards and the market price of common stock as of the reporting date. During 2017, 2016 and 2015, the Company granted no options, and recorded no stock compensation expense related to option grants. The Company recorded no other stock compensation expense applicable to options during the years ended December 31, 2017, 2016 and 2015 because all outstanding options were fully vested prior to 2007. Restricted Stock During the periods presented, awards of long-term incentives were granted in the form of restricted stock. Awards that were granted to management and selected other employees under a management and employee incentive plan were granted in tandem with cash credit entitlements (typically in the form of 60% restricted stock grants and 40% cash credit entitlements). The management and employee restricted stock grants and tandem cash credit entitlements awarded will vest in three equal installments of 33.3% with the first annual vesting on December 5 th of the year of the grant and on December 5 th of the next two succeeding years. Awards that were granted to directors as additional retainer for their services do not include any cash credit entitlement. These director restricted stock grants are subject to forfeiture in the event that the recipient of the grant does not continue in service as a director of the Company through December 5th of the year after grant or do not satisfy certain meeting attendance requirements, at which time they generally vest 100 percent . For measuring compensation costs, restricted stock awards are valued based upon the market value of the common shares on the date of grant. The following table presents expense recorded for restricted stock and cash entitlements as well as the related tax effect for the years ended 2017, 2016, and 2015: 2017 2016 2015 Restricted Stock Expense $ 1,246 $ 1,407 $ 963 Cash Entitlement Expense 657 570 580 Tax Effect (746 ) (782 ) (615 ) Net of Tax $ 1,157 $ 1,195 $ 928 Unrecognized expense associated with the restricted stock grants and cash entitlements totaled $1,983 , $1,774 , and $1,542 as of December 31, 2017, 2016, and 2015, respectively. The following table presents information on restricted stock grants outstanding for the period shown: Year Ended December 31, 2017 Restricted Shares Weighted Average Market Price at Grant Outstanding at Beginning of Period 53,163 $ 22.32 Granted 43,386 31.77 Issued and Vested (49,733 ) 24.79 Forfeited (510 ) 27.22 Outstanding at End of Period 46,306 $ 28.47 Employee Stock Purchase Plan The Company maintains an Employee Stock Purchase Plan whereby eligible employees have the option to purchase the Company’s common stock at a discount. The purchase price of the shares under this Plan has been set at 95% of the fair market value of the Company’s common stock as of the last day of the plan year. The plan provided for the purchase of up to 750,000 shares of common stock, which the Company may obtain by purchases on the open market or from private sources, or by issuing authorized but unissued common shares. At December 31, 2017, there were 557,203 shares available for future issuance under this plan. Funding for the purchase of common stock is from employee and Company contributions. In 2017, the Company recorded $32 of expense, $19 net of tax, for the employee stock purchase plan. In 2016, the Company recorded $82 of expense, $50 net of tax, for the employee stock purchase plan. In 2015, the Company recorded $22 of expense, $13 net of tax, for the employee stock purchase plan. There was no unrecognized compensation expense as of December 31, 2017, 2016 and 2015 for the Employee Stock Purchase Plan. Stock Repurchase Plan On April 26, 2001, the Company announced that its Board of Directors approved a stock repurchase program for up to 911,631 of the outstanding Common Shares of the Company. Shares may be purchased from time to time in the open market and in large block privately negotiated transactions. The Company is not obligated to purchase any shares under the program, and the program may be discontinued at any time before the maximum number of shares specified by the program are purchased. The Board of Directors established no expiration date for this program. As of December 31, 2017, the Company had purchased 502,447 shares under the program. No shares were purchased under the program during the years ended December 31, 2017, 2016 and 2015. Common Stock Split On March 27, 2017, the Company declared a 3-for-2 stock split on the Company's authorized and outstanding common shares. The stock split was distributed on April 21, 2017, to shareholders of record as of April 6, 2017. All share and per share data in this Annual Report on Form 10-K relating to a date or period that precedes April 21, 2017 have been adjusted to retroactively reflect the stock split.

Per Share Data

Per Share Data	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Per Share Data	Per Share Data The computation of Basic Earnings per Share and Diluted Earnings per Share are provided below: 2017 2016 2015 Basic Earnings per Share: (1) Net Income $ 40,676 $ 35,184 $ 30,064 Weighted Average Shares Outstanding 22,924,726 22,389,137 19,882,503 Basic Earnings per Share $ 1.77 $ 1.57 $ 1.51 Diluted Earnings per Share: (1) Net Income $ 40,676 $ 35,184 $ 30,064 Weighted Average Shares Outstanding 22,924,726 22,389,137 19,882,503 Stock Options, Net — 1,979 5,871 Diluted Weighted Average Shares Outstanding 22,924,726 22,391,116 19,888,374 Diluted Earnings per Share $ 1.77 $ 1.57 $ 1.51 (1) Share and per share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017. There were no anti-dilutive shares at December 31, 2017, 2016, and 2015.

Operating Lease Commitments

Operating Lease Commitments	12 Months Ended
	Dec. 31, 2017
Leases [Abstract]
Operating Lease Commitments	Operating Lease Commitments The total rental expense for all operating leases for the years ended December 31, 2017, 2016, and 2015 was $1,213 , $1,215 , and $753 respectively, including amounts paid under short-term cancelable leases. The following is a schedule of future minimum lease payments under operating leases for premises and equipment at year end 2017: 2018 $ 1,050 2019 956 2020 843 2021 752 2022 638 Thereafter 2,980 Total $ 7,219

Commitments and Off-balance She

Commitments and Off-balance Sheet Items	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Off-balance Sheet Items	Commitments and Off-balance Sheet Items In the normal course of business, there are various commitments and contingent liabilities, such as commitments to extend credit and commitments to sell loans, which are not reflected in the accompanying consolidated financial statements. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instruments for commitments to make loans and standby letters of credit is represented by the contractual amount of those instruments. The Company uses the same credit policy to make commitments as it uses for on-balance sheet items. The Company’s exposure to credit risk for commitments to sell loans is dependent upon the ability of the counter-party to purchase the loans. This is generally assured by the use of government sponsored entity counterparts. These commitments are subject to market risk resulting from fluctuations in interest rates. Commitments and contingent liabilities are summarized as follows, at December 31: 2017 2016 Fixed Rate Variable Rate Fixed Variable Commitments to Fund Loans: Consumer Lines $ 10,997 $ 260,934 $ 10,081 $ 237,087 Commercial Operating Lines 19,267 308,381 24,598 274,619 Residential Mortgages 17,255 655 13,760 765 Total Commitments to Fund Loans $ 47,519 $ 569,970 $ 48,439 $ 512,471 Commitments to Sell Loans: Mandatory $ 681 $ — $ 973 $ — Non-mandatory $ 24,628 $ 188 $ 30,708 $ 677 Standby Letters of Credit $ 959 $ 4,736 $ 1,059 $ 7,869 The fixed rate commitments to fund loans have interest rates ranging from 2.00% to 18.00% and maturities ranging from less than 1 year to 32 years . Since many commitments to make loans expire without being used, these amounts do not necessarily represent future cash commitments. Collateral obtained upon exercise of the commitment is determined using management’s credit evaluation of the borrower, and may include accounts receivable, inventory, property, land, and other items.

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair value is the exchange price that would be received for an asset or paid to transfer a liability (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. There are three levels of inputs that may be used to measure fair values: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. The Company used the following methods and significant assumptions to estimate the fair value of each type of financial instrument: Investment Securities: The fair values for investment securities are determined by quoted market prices, if available (Level 1). For securities where quoted prices are not available, fair values are calculated based on market prices of similar securities (Level 2). For securities where quoted prices or market prices of similar securities are not available, fair values are calculated using discounted cash flows or other market indicators (Level 3). Level 3 pricing is obtained from a third-party based upon similar trades that are not traded frequently without adjustment by the Company. At December 31, 2017, the Company held $6.0 million in Level 3 securities which consist of $5.6 million of non-rated Obligations of State and Political Subdivisions and $353 thousand of equity securities that are not actively traded. Absent the credit rating, significant assumptions must be made such that the credit risk input becomes an unobservable input and thus these securities are reported by the Company in a Level 3 classification. Derivatives: The fair values of derivatives are based on valuation models using observable market data as of the measurement date (Level 2). Impaired Loans: Fair values for impaired collateral dependent loans are generally based on appraisals obtained from licensed real estate appraisers and in certain circumstances consideration of offers obtained to purchase properties prior to foreclosure. Appraisals for commercial real estate generally use three methods to derive value: cost, sales or market comparison and income approach. The cost method bases value in the cost to replace the current property. Value of market comparison approach evaluates the sales price of similar properties in the same market area. The income approach considers net operating income generated by the property and an investor's required return. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Comparable sales adjustments are based on known sales prices of similar type and similar use properties and duration of time that the property has been on the market to sell. Such adjustments made in the appraisal process are typically significant and result in a Level 3 classification of the inputs for determining fair value. Appraisals for both collateral-dependent impaired loans and other real estate owned are performed by certified general appraisers (for commercial properties) or certified residential appraisers (for residential properties) whose qualifications and licenses have been reviewed and verified by the Company. Once received, a member of the Company’s Risk Management Area reviews the assumptions and approaches utilized in the appraisal. In determining the value of impaired collateral dependent loans and other real estate owned, significant unobservable inputs may be used which include: physical condition of comparable properties sold, net operating income generated by the property and investor rates of return. Other Real Estate: Nonrecurring adjustments to certain commercial and residential real estate properties classified as other real estate (ORE) are measured at the lower of carrying amount or fair value, less costs to sell. Fair values are generally based on third party appraisals of the property utilizing similar techniques as discussed above for Impaired Loans, resulting in a Level 3 classification. In cases where the carrying amount exceeds the fair value, less costs to sell, impairment loss is recognized. Loan Servicing Rights: On a quarterly basis, loan servicing rights are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. The valuation model utilizes interest rate, prepayment speed, and default rate assumptions that market participants would use in estimating future net servicing income and that can be validated against available market data. Loans Held-for-Sale: The fair values of loans held for sale are determined by using quoted prices for similar assets, adjusted for specific attributes of that loan resulting in a Level 2 classification. Assets and Liabilities Measured on a Recurring Basis Assets and liabilities measured at fair value on a recurring basis, including financial assets and liabilities for which the Company has elected the fair value option, are summarized below: Fair Value Measurements at December 31, 2017 Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Obligations of State and Political Subdivisions $ — $ 267,660 $ 5,649 $ 273,309 MBS/CMO - Residential — 467,332 — 467,332 Equity Securities — — 353 353 Total Securities $ — $ 734,992 $ 6,002 $ 740,994 Loans Held-for-Sale $ — $ 6,719 $ — $ 6,719 Derivative Assets $ — $ 1,564 $ — $ 1,564 Mortgage Servicing Rights $ — $ 547 $ — $ 547 Derivative Liabilities $ — $ 1,633 $ — $ 1,633 Fair Value Measurements at December 31, 2016 Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Obligations of State and Political Subdivisions $ — $ 240,495 $ 7,024 $ 247,519 MBS/CMO - Residential — 461,914 — 461,914 Equity Securities — — 353 353 Total Securities $ — $ 702,409 $ 7,377 $ 709,786 Loans Held-for-Sale $ — $ 15,273 $ — $ 15,273 Derivative Assets $ — $ 1,291 $ — $ 1,291 Mortgage Servicing Rights $ — $ 611 $ — $ 611 Derivative Liabilities $ — $ 1,238 $ — $ 1,238 There were no transfers between Level 1 and Level 2 for the periods ended December 31, 2017 and 2016. At December 31, 2017, the aggregate fair value of the Loans Held-for-Sale was $6,719 . Aggregate contractual principal balance was $6,576 with a difference of $143 . At December 31, 2016, the aggregate fair value of the Loans Held-for-Sale was $15,273 . Aggregate contractual principal balance was $14,983 with a difference of $290 . The table below presents a reconciliation of all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31, 2017 and 2016: Obligations of State and Political Subdivisions Equity Securities 2017 2016 2017 2016 Balance of Recurring Level 3 Assets at January 1 $ 7,024 $ 8,749 $ 353 $ 353 Total Gains or Losses Included in Other Comprehensive Income (60 ) (75 ) — — Maturities / Calls (1,315 ) (1,650 ) — — Purchases — — — — Balance of Recurring Level 3 Assets at December 31 $ 5,649 $ 7,024 $ 353 $ 353 Of the total gain/loss included in earnings for the years ended December 31, 2017 and 2016, ($60) and ($75) was attributable to other changes in fair value, respectively. Assets and Liabilities Measured on a Non-Recurring Basis Assets and liabilities measured at fair value on a non-recurring basis are summarized below: Fair Value Measurements at December 31, 2017 Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Impaired Loans Commercial and Industrial Loans $ — $ — $ 3,354 $ 3,354 Commercial Real Estate Loans — — 3,438 3,438 Fair Value Measurements at December 31, 2016 Using Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Total Assets: Impaired Loans Commercial and Industrial Loans $ — $ — $ 60 $ 60 Commercial Real Estate Loans — — 348 348 Impaired loans, which are measured for impairment using the fair value of the collateral for collateral dependent loans, had a carrying amount of $9,020 with a valuation allowance of $2,228 , resulting in an increase to the provision for loan losses of $1,973 for the year ended December 31, 2017. Impaired loans, which are measured for impairment using the fair value of the collateral for collateral dependent loans, had a carrying amount of $663 with a valuation allowance of $255 , resulting in an increase to the provision for loan losses of $115 for the year ended December 31, 2016. There was no Other Real Estate carried at fair value less costs to sell at December 31, 2017 and 2016. No charge to earnings was included in the year ended December 31, 2017. A charge to earnings through Other Operating Income of $ 75 was included in the year ended December 31, 2016. The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2017 and 2016: December 31, 2017 Fair Value Valuation Technique(s) Unobservable Input(s) Range (Weighted Average) Impaired Loans - Commercial and Industrial Loans $ 3,354 Sales comparison approach Adjustment for physical condition of comparable properties sold 0% - 95% Impaired Loans - Commercial Real Estate Loans $ 3,438 Sales comparison approach Adjustment for physical condition of comparable properties sold 30% - 76% December 31, 2016 Fair Value Valuation Technique(s) Unobservable Input(s) Range (Weighted Average) Impaired Loans - Commercial and Industrial Loans $ 60 Sales comparison approach Adjustment for physical condition of comparable properties sold 0% - 100% Impaired Loans - Commercial Real Estate Loans $ 348 Sales comparison approach Adjustment for physical condition of comparable properties sold 33% - 77% The carrying amounts and estimated fair values of the Company’s financial instruments not previously presented are provided in the tables below for the periods ending December 31, 2017 and 2016. Not all of the Company’s assets and liabilities are considered financial instruments, and therefore are not included in the table. Because no active market exists for a significant portion of the Company’s financial instruments, fair value estimates were based on subjective judgments, and therefore cannot be determined with precision. Fair Value Measurements at December 31, 2017 Using Carrying Value Level 1 Level 2 Level 3 Total Financial Assets: Cash and Short-term Investments $ 70,359 $ 58,233 $ 12,126 $ — $ 70,359 Loans, Net 2,119,152 — — 2,120,154 2,120,154 FHLB Stock and Other Restricted Stock 13,048 N/A N/A N/A N/A Accrued Interest Receivable 13,258 — 3,574 9,684 13,258 Financial Liabilities: Demand, Savings, and Money Market Deposits (2,096,167 ) (2,096,167 ) — — (2,096,167 ) Time Deposits (387,885 ) — (388,640 ) — (388,640 ) Short-term Borrowings (133,499 ) — (133,499 ) — (133,499 ) Long-term Debt (141,717 ) — (129,366 ) (11,052 ) (140,418 ) Accrued Interest Payable (1,058 ) — (1,042 ) (16 ) (1,058 ) Fair Value Measurements at December 31, 2016 Using Carrying Value Level 1 Level 2 Level 3 Total Financial Assets: Cash and Short-term Investments $ 64,816 $ 48,467 $ 16,349 $ — $ 64,816 Loans, Net 1,974,074 — — 1,980,523 1,980,523 FHLB Stock and Other Restricted Stock 13,048 N/A N/A N/A N/A Accrued Interest Receivable 11,413 — 3,289 8,124 11,413 Financial Liabilities: Demand, Savings, and Money Market Deposits (1,971,370 ) (1,971,370 ) — — (1,971,370 ) Time Deposits (378,181 ) — (378,000 ) — (378,000 ) Short-term Borrowings (137,554 ) — (137,554 ) — (137,554 ) Long-term Debt (120,560 ) — (109,709 ) (10,793 ) (120,502 ) Accrued Interest Payable (789 ) — (775 ) (14 ) (789 ) Cash and Short-Term Investments: The carrying amount of cash and short-term investments approximate fair values and are classified as Level 1 or Level 2. FHLB Stock and Other Restricted Stock: It is not practical to determine the fair values of FHLB stock and other restricted stock due to restrictions placed on their transferability. Loans: Fair values of loans, excluding loans held for sale and collateral dependent impaired loans carried at fair value, are estimated as follows: For variable rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values resulting in a Level 3 classification. Fair values for other loans are estimated using discounted cash flow analysis, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality resulting in a Level 3 classification. Impaired loans are valued as described previously. The methods utilized to estimate fair value of loans do not necessarily represent an exit price. Accrued Interest Receivable: The carrying amount of accrued interest approximates fair value resulting in a Level 2 or Level 3 classification consistent with the asset they are associated with. Deposits: The fair values disclosed for demand deposits (e.g., interest and non-interest checking, savings and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amount) resulting in a Level 1 classification. Fair values for fixed rate time deposits are estimated using a discounted cash flows calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits resulting in a Level 2 classification. Short-term Borrowings: The carrying amounts of federal funds purchased, borrowings under repurchase agreements, and other short-term borrowings, generally maturing within ninety days, approximate their fair values resulting in a Level 2 classification. Long-Term Debt: The fair values of the Company’s long-term borrowings are estimated using discounted cash flow analyses based on the current borrowing rates for similar types of borrowing arrangements resulting in a Level 2 classification. The fair values of the Company’s subordinated debentures are estimated using discounted cash flow analyses based on the current borrowing rates for similar types of borrowing arrangements resulting in a Level 3 classification. Accrued Interest Payable: The carrying amount of accrued interest approximates fair value resulting in a Level 2 or Level 3 classification consistent with the liability they are associated with.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Segment Information	Segment Information The Company’s operations include three primary segments: core banking, trust and investment advisory services, and insurance operations. The core banking segment involves attracting deposits from the general public and using such funds to originate consumer, commercial and agricultural, commercial and agricultural real estate, and residential mortgage loans, primarily in the Company’s local markets. The core banking segment also involves the sale of residential mortgage loans in the secondary market. The trust and investment advisory services segment involves providing trust, investment advisory, and brokerage services to customers. The insurance segment offers a full range of personal and corporate property and casualty insurance products, primarily in the Company’s banking subsidiary’s local markets. The core banking segment is comprised by the Company’s banking subsidiary, German American Bancorp, which operated through 53 banking offices at December 31, 2017. Net interest income from loans and investments funded by deposits and borrowings is the primary revenue for the core-banking segment. The trust and investment advisory services segment’s revenues are comprised primarily of fees generated by the trust operations of the Company's banking subsidiary and by German American Investment Services, Inc. These fees are derived by providing trust, investment advisory, and brokerage services to its customers. The insurance segment primarily consists of German American Insurance, Inc., which provides a full line of personal and corporate insurance products. Commissions derived from the sale of insurance products are the primary source of revenue for the insurance segment. The following segment financial information has been derived from the internal financial statements of the Company which are used by management to monitor and manage financial performance. The accounting policies of the three segments are the same as those of the Company. The evaluation process for segments does not include holding company income and expense. Holding company amounts are the primary differences between segment amounts and consolidated totals, and are reflected in the column labeled “Other” below, along with amounts to eliminate transactions between segments. Core Banking Trust and Investment Advisory Services Insurance Other Consolidated Totals Year Ended December 31, 2017 Net Interest Income $ 100,659 $ 6 $ 9 $ (765 ) $ 99,909 Net Gains on Sales of Loans 3,280 — — — 3,280 Net Gains on Securities 593 — — 3 596 Trust and Investment Product Fees 3 5,272 — (3 ) 5,272 Insurance Revenues 28 34 7,917 — 7,979 Noncash Items: Provision for Loan Losses 1,750 — — — 1,750 Depreciation and Amortization 4,351 4 76 256 4,687 Income Tax Expense (Benefit) 12,262 145 512 (1,385 ) 11,534 Segment Profit (Loss) 39,520 217 918 21 40,676 Segment Assets at December 31, 2017 3,142,096 1,987 10,078 (9,801 ) 3,144,360 Core Banking Trust and Investment Advisory Services Insurance Other Consolidated Totals Year Ended December 31, 2016 Net Interest Income $ 95,562 $ 1 $ 7 $ (666 ) $ 94,904 Net Gains on Sales of Loans 3,359 — — — 3,359 Net Gains on Securities 1,979 — — — 1,979 Trust and Investment Product Fees (3 ) 4,662 — (15 ) 4,644 Insurance Revenues 23 29 7,689 — 7,741 Noncash Items: Provision for Loan Losses 1,200 — — — 1,200 Depreciation and Amortization 4,002 3 72 238 4,315 Income Tax Expense (Benefit) 14,306 168 741 (1,269 ) 13,946 Segment Profit (Loss) 35,070 227 1,147 (1,260 ) 35,184 Segment Assets at December 31, 2016 2,958,585 1,851 8,494 (12,936 ) 2,955,994 Core Banking Trust and Investment Advisory Services Insurance Other Consolidated Totals Year Ended December 31, 2015 Net Interest Income $ 75,939 $ 8 $ 6 $ (401 ) $ 75,552 Net Gains on Sales of Loans 2,959 — — — 2,959 Net Gains on Securities 698 — — 27 725 Trust and Investment Product Fees 3 3,957 — (3 ) 3,957 Insurance Revenues 24 33 7,432 — 7,489 Noncash Items: Provision for Loan Losses — — — — — Depreciation and Amortization 3,994 13 107 150 4,264 Income Tax Expense (Benefit) 11,836 (24 ) 663 (869 ) 11,606 Segment Profit (Loss) 29,461 (70 ) 1,003 (330 ) 30,064 Segment Assets at December 31, 2015 2,367,296 1,338 7,022 (1,955 ) 2,373,701

Parent Company Financial Statem

Parent Company Financial Statements	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Parent Company Financial Statements	Parent Company Financial Statements The condensed financial statements of German American Bancorp, Inc. are presented below: CONDENSED BALANCE SHEETS December 31, 2017 2016 ASSETS Cash $ 24,777 $ 10,217 Securities Available-for-Sale, at Fair Value 353 353 Investment in Subsidiary Bank 342,054 322,138 Investment in Non-banking Subsidiaries 5,050 4,673 Other Assets 8,906 9,577 Total Assets $ 381,140 $ 346,958 LIABILITIES Borrowings $ 11,231 $ 10,975 Other Liabilities 5,338 5,716 Total Liabilities 16,569 16,691 SHAREHOLDERS’ EQUITY Common Stock 22,934 15,261 Additional Paid-in Capital 165,288 171,744 Retained Earnings 178,969 149,666 Accumulated Other Comprehensive Income (Loss) (2,620 ) (6,404 ) Total Shareholders’ Equity 364,571 330,267 Total Liabilities and Shareholders’ Equity $ 381,140 $ 346,958 CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME Years Ended December 31, 2017 2016 2015 INCOME Dividends from Subsidiaries Bank $ 25,000 $ 15,000 $ 15,900 Non-bank 975 1,000 1,504 Interest Income 34 20 30 Other Income (Loss) 25 (27 ) 21 Total Income 26,034 15,993 17,455 EXPENSES Salaries and Employee Benefits 533 1,006 500 Professional Fees 602 1,096 739 Occupancy and Equipment Expense 7 13 8 Interest Expense 877 742 491 Other Expenses 794 750 657 Total Expenses 2,813 3,607 2,395 INCOME BEFORE INCOME TAXES AND EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES 23,221 12,386 15,060 Income Tax Benefit 1,415 1,284 893 INCOME BEFORE EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES 24,636 13,670 15,953 Equity in Undistributed Income of Subsidiaries 16,040 21,514 14,111 NET INCOME 40,676 35,184 30,064 Other Comprehensive Income: Changes in Unrealized Gain (Loss) on Securities, Available-for-Sale 4,391 (10,202 ) 932 Changes in Unrecognized (Loss) in Postretirement Benefit Obligation, Net (138 ) (14 ) (10 ) TOTAL COMPREHENSIVE INCOME $ 44,929 $ 24,968 $ 30,986 CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, 2017 2016 2015 CASH FLOWS FROM OPERATING ACTIVITIES Net Income $ 40,676 $ 35,184 $ 30,064 Adjustments to Reconcile Net Income to Net Cash from Operations Change in Other Assets 431 2,085 (5,331 ) Change in Other Liabilities (122 ) 310 1,226 Equity Based Compensation 1,246 1,407 963 Excess Tax Benefit from Restricted Share Grant 240 200 89 Equity in Excess Undistributed Income of Subsidiaries (16,040 ) (21,514 ) (14,111 ) Net Cash from Operating Activities 26,431 17,672 12,900 CASH FLOWS FROM INVESTING ACTIVITIES Cash Used for Business Acquisitions — (15,992 ) — Net Cash from Investing Activities — (15,992 ) — CASH FLOWS FROM FINANCING ACTIVITIES Repayment of Long-term Debt — — (4,000 ) Issuance (Retirement) of Common Stock (29 ) 55 49 Employee Stock Purchase Plan — — 447 Dividends Paid (11,842 ) (10,630 ) (9,010 ) Net Cash from Financing Activities (11,871 ) (10,575 ) (12,514 ) Net Change in Cash and Cash Equivalents 14,560 (8,895 ) 386 Cash and Cash Equivalents at Beginning of Year 10,217 19,112 18,726 Cash and Cash Equivalents at End of Year $ 24,777 $ 10,217 $ 19,112

Business Combinations, Goodwill

Business Combinations, Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2017
Business Combinations, Goodwill and Intangible Assets [Abstract]
Business Combinations, Goodwill and Intangible Assets	Business Combinations, Goodwill and Intangible Assets Effective March 1, 2016, the Company acquired River Valley Bancorp ("River Valley") and its subsidiaries, including River Valley Financial Bank, pursuant to an Agreement and Plan of Reorganization dated October 26, 2015. The acquisition was accomplished by the merger of River Valley with and into the Company, immediately followed by the merger of River Valley Financial Bank with and into the Company's bank subsidiary, German American Bancorp. River Valley Financial Bank operated 14 banking offices in Southeast Indiana and 1 banking office in Northern Kentucky. River Valley's consolidated assets and equity (unaudited) as of February 29, 2016 totaled $516.3 million and $56.6 million , respectively. The Company accounted for the transaction under the acquisition method of accounting which means that the acquired assets and liabilities were recorded at fair value at the date of acquisition. In accordance with ASC 805, the Company has expensed approximately $4.3 million of direct acquisition costs and recorded $33.5 million of goodwill and $2.6 million of intangible assets. The intangible assets are related to core deposits and are being amortized over 8 years. For tax purposes, goodwill totaling $33.5 million is non-deductible but will be evaluated annually for impairment. The following table summarizes the fair value of the total consideration transferred as a part of the River Valley acquisition as well as the fair value of identifiable assets acquired and liabilities assumed as of the effective date of the transaction. Consideration Cash for Options and Fractional Shares $ 395 Cash Consideration 24,975 Equity Instruments 62,022 Fair Value of Total Consideration Transferred $ 87,392 Recognized Amounts of Identifiable Assets Acquired and Liabilities Assumed: Cash $ 17,877 Federal Funds Sold and Other Short-term Investments 6,477 Interest-bearing Time Deposits with Banks 992 Securities 132,396 Loans 317,760 Stock in FHLB of Indianapolis and Other Restricted Stock, at Cost 3,127 Premises, Furniture & Equipment 9,650 Other Real Estate 882 Intangible Assets 2,613 Company Owned Life Insurance 12,842 Accrued Interest Receivable and Other Assets 9,139 Deposits - Non-interest Bearing (9,584 ) Deposits - Interest Bearing (395,862 ) FHLB Advances and Other Borrowings (49,910 ) Accrued Interest Payable and Other Liabilities (4,529 ) Total Identifiable Net Assets $ 53,870 Goodwill $ 33,522 Under the terms of the merger agreement, the Company issued approximately 1,942,000 shares of its common stock to the former shareholders of River Valley. Each River Valley common shareholder of record at the effective time of the merger became entitled to receive 0.770 shares of common stock of the Company for each of their former shares of River Valley common stock. In connection with the closing of the merger, the Company paid to River Valley's shareholders of record at the close of business on February 29, 2016, cash consideration of $9.90 per River Valley share (an aggregate of $24,975 to shareholders) and the Company paid approximately $395 to persons who held options to purchase River Valley common stock (all of which rights were canceled at the effective time of the merger and were not assumed by the Company). This acquisition was consistent with the Company’s strategy to build a regional presence in Southern Indiana. The acquisition offers the Company the opportunity to increase profitability by introducing existing products and services to the acquired customer base as well as add new customers in the expanded region. The fair value of net assets acquired includes fair value adjustments to certain receivables that were not considered impaired as of the acquisition date. The fair value adjustments were determined using discounted cash flows. However, the Company believes that all contractual cash flows related to these financial instruments will be collected. As such, these receivables were not considered impaired at the acquisition date and were not subject to the guidance relating to purchased credit impaired loans, which are loans that have shown evidence of credit deterioration since origination. Receivables acquired that were not subject to these requirements include non-impaired loans and customer receivables with a fair value of $309.0 million and unpaid principal of $316.4 million on the date of acquisition. On January 1, 2017, the Company acquired certain assets of an existing insurance agency office located in Madison, Indiana. The assets became a part of German American Insurance, Inc., the Company's property and casualty insurance entity. The purchase price of this transaction was $ 209 in cash and resulted in $ 209 in customer list intangible. The customer relationship intangible is being amortized over seven years utilizing the straight-line method and deducted for tax purposes over 15 years using the straight-line method. Goodwill The changes in the carrying amount of goodwill for the periods ended December 31, 2017, 2016, and 2015, were classified as follows: 2017 2016 2015 Beginning of Year $ 54,058 $ 20,536 $ 20,536 Acquired Goodwill — 33,522 — Impairment — — — End of Year $ 54,058 $ 54,058 $ 20,536 Of the $54,058 carrying amount of goodwill, $52,726 is allocated to the core banking segment, and $1,332 is allocated to the insurance segment for the period ended December 31, 2017 and 2016. Of the $20,536 carrying amount of goodwill, $19,204 is allocated to the core banking segment, and $1,332 is allocated to the insurance segment for the periods ended December 31, 2015. Impairment exists when a reporting unit’s carrying value of goodwill exceeds its fair value. At December 31, 2017, the Company’s reporting units had positive equity, and the Company elected to perform a qualitative assessment to determine if it was more likely than not that the fair value of the reporting units exceeded its carrying value, including goodwill. The qualitative assessment indicated that it was more likely than not that the fair value of the reporting unit exceeded its carrying value. Acquired Intangible Assets Acquired intangible assets were as follows as of year end: 2017 Gross Amount Accumulated Amortization Core Banking Core Deposit Intangible $ 11,617 $ (9,694 ) Branch Acquisition Intangible 257 (257 ) Insurance Customer List 5,408 (5,229 ) Total $ 17,282 $ (15,180 ) Acquired intangible assets were as follows as of year end: 2016 Gross Amount Accumulated Amortization Core Banking Core Deposit Intangible $ 11,617 $ (8,782 ) Branch Acquisition Intangible 257 (257 ) Insurance Customer List 5,199 (5,199 ) Total $ 17,073 $ (14,238 ) Amortization Expense was $ 942 , $ 1,062 and $ 790 , for 2017, 2016 and 2015. Estimated amortization expense for each of the next five years is as follows: 2018 $ 753 2019 564 2020 383 2021 229 2022 114

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Other Comprehensive Income (Loss)	Other Comprehensive Income (Loss) The tables below summarize the changes in accumulated other comprehensive income (loss) by component for the years ended December 31, 2017 and 2016, net of tax: December 31, 2017 Unrealized Gains and Losses on Available-for-Sale Securities Postretirement Benefit Items Total Beginning Balance $ (6,312 ) $ (92 ) $ (6,404 ) Other Comprehensive Income (Loss) Before Reclassification 4,778 (143 ) 4,635 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (387 ) 5 (382 ) Net Current Period Other Comprehensive Income (Loss) 4,391 (138 ) 4,253 ASU 2018-02 Adoption (414 ) (55 ) (469 ) Ending Balance $ (2,335 ) $ (285 ) $ (2,620 ) December 31, 2016 Unrealized Gains and Losses on Available-for-Sale Securities Postretirement Benefit Items Total Beginning Balance $ 3,890 $ (78 ) $ 3,812 Other Comprehensive Income (Loss) Before Reclassification (8,916 ) (18 ) (8,934 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (1,286 ) 4 (1,282 ) Net Current Period Other Comprehensive Income (Loss) (10,202 ) (14 ) (10,216 ) Ending Balance $ (6,312 ) $ (92 ) $ (6,404 ) The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2017: Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified From Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement Where Net Income is Presented Unrealized Gains and Losses on Available-for-Sale Securities $ 596 Net Gain (Loss) on Securities (209 ) Income Tax Expense 387 Net of Tax Amortization of Post Retirement Plan Items Actuarial Gains (Losses) $ (8 ) Salaries and Employee Benefits 3 Income Tax Expense (5 ) Net of Tax Total Reclassifications for the Period $ 382 The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2016: Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified From Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement Where Net Income is Presented Unrealized Gains and Losses on Available-for-Sale Securities $ 1,979 Net Gain (Loss) on Securities (693 ) Income Tax Expense 1,286 Net of Tax Amortization of Post Retirement Plan Items Actuarial Gains (Losses) $ (6 ) Salaries and Employee Benefits 2 Income Tax Expense (4 ) Net of Tax Total Reclassifications for the Period $ 1,282 The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2015: Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified From Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement Where Net Income is Presented Unrealized Gains and Losses on Available-for-Sale Securities $ 725 Net Gain (Loss) on Securities (254 ) Income Tax Expense 471 Net of Tax Amortization of Post Retirement Plan Items Actuarial Gains (Losses) $ (5 ) Salaries and Employee Benefits 2 Income Tax Expense (3 ) Net of Tax Total Reclassifications for the Period $ 468

Quarterly Financial Data (Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (Unaudited)	Quarterly Financial Data (Unaudited) The following table represents selected quarterly financial data for the Company: Interest Income Net Interest Income Net Income Basic Earnings per Share Diluted Earnings per Share 2017 First Quarter $ 27,033 $ 24,725 $ 9,556 $ 0.42 $ 0.42 Second Quarter 27,401 24,813 9,839 0.43 0.43 Third Quarter 27,986 24,917 9,660 0.42 0.42 Fourth Quarter 28,610 25,454 11,621 0.51 0.51 2016 First Quarter $ 22,680 $ 20,784 $ 5,146 $ 0.25 $ 0.25 Second Quarter 26,850 24,671 9,788 0.43 0.43 Third Quarter 26,734 24,560 10,185 0.45 0.45 Fourth Quarter 27,101 24,889 10,065 0.44 0.44

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On February 12, 2018, German American Bancorp entered into a Purchase and Assumption Agreement (the “Purchase Agreement”) with MainSource Bank, a wholly-owned subsidiary of MainSource Financial Group, Inc. (“MainSource”), which provides for the acquisition by German American Bancorp of five MainSource Bank branch locations ( four in Columbus, Indiana, and one in Greensburg, Indiana), and certain related assets, and the assumption by German American Bancorp of certain related liabilities. Pursuant to the Purchase Agreement, German American Bancorp has agreed to assume approximately $160 million in deposits and purchase approximately $134 million in loans associated with the five bank branches. German American Bancorp has agreed to pay a purchase price equal to the sum of: (i) 8.0% of the balances of certain checking accounts and other demand withdrawal accounts (excluding governmental accounts with public funds); (ii) 4.5% of the balances of governmental accounts with public funds, excluding time deposits; (iii) 4.5% of the balances of money market and savings deposits, excluding governmental accounts with public funds; (iv) the net book value of all assets, including loans but excluding any accrued interest on such loans; and (v) the accrued interest with respect to purchased loans. The purchase price will be adjusted to reflect increases or decreases in the deposit balances during the six month period following the closing date. Upon written notice, German American Bancorp will also have the ability to put loans back to MainSource Bank during such six month period. The expected premium to be paid for deposits under the Agreement is approximately $8 million . German American Bancorp is also assuming the obligations of MainSource Bank related to certain leases covering the five bank branches. The transaction is expected to close in the second quarter of 2018, subject to regulatory approval, the closing of the previously-announced pending merger of MainSource and First Financial Bancorp, and other customary closing conditions. Effective April 1, 2018, the legal name of German American Bancorp will be changed to German American Bank. The new name corresponds with the trade name already being used by the banking subsidiary and promotes further distinction in nomenclature between the banking subsidiary and the bank holding company, German American Bancorp, Inc.

Summary of Significant Accoun30

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2017
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation German American Bancorp, Inc's. operations are primarily comprised of three business segments: core banking, trust and investment advisory services, and insurance operations. The accounting and reporting policies of German American Bancorp, Inc. and its subsidiaries conform to U.S. generally accepted accounting principles. The more significant policies are described below. The consolidated financial statements include the accounts of the Company and its subsidiaries after elimination of all material intercompany accounts and transactions. Certain prior year amounts have been reclassified to conform with current classifications. Reclassifications had no impact on shareholders' equity or net income. To prepare financial statements in conformity with accounting principles generally accepted in the United States of America management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ.
Securities	Securities Securities classified as available-for-sale are securities that the Company intends to hold for an indefinite period of time, but not necessarily until maturity. These include securities that management may use as part of its asset/liability strategy, or that may be sold in response to changes in interest rates, changes in prepayment risk, or similar reasons. Equity securities with readily determinable fair values are classified as available-for-sale. Equity securities that do not have readily determinable fair values are carried at historical cost and evaluated for impairment on a periodic basis. Securities classified as available-for-sale are reported at fair value with unrealized gains or losses included as a separate component of equity, net of tax. Securities classified as held-to-maturity are securities that the Company has both the ability and positive intent to hold to maturity. Securities held-to-maturity are carried at amortized cost. Premium amortization is deducted from, and discount accretion is added to, interest income using the level yield method without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Gains and losses on sales are recorded on trade date and are computed on the identified securities method. Management evaluates securities for other-than-temporary impairment (“OTTI”) on at least a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. For securities in an unrealized loss position, management considers the extent and duration of the unrealized loss, and the financial condition and near-term prospects of the issuer. Management also assesses whether it intends to sell, or it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: 1) OTTI related to credit loss, which must be recognized in the income statement and 2) OTTI related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. For equity securities, the entire amount of impairment is recognized through earnings.
Loans Held for Sale	Loans Held for Sale Mortgage loans originated and intended for sale in the secondary market are carried at fair value. Fair value is determined based on collateral value and prevailing market prices for loans with similar characteristics. Net unrealized gains or losses are recorded through earnings. Mortgage loans held for sale are generally sold on a servicing released basis. Gains and losses on sales of mortgage loans are based on the difference between the selling price and the carrying value of the related loan sold.
Loans	Loans Loans that management originates and has the intent and ability to hold for the foreseeable future or until maturity or pay-off are reported at the principal balance outstanding, net of unearned interest, deferred loan fees and costs, and an allowance for loan losses. Interest income is accrued on unpaid principal balance and includes amortization of net deferred loan fees and costs over the loan term without anticipating prepayments. All classes of loans are generally placed on non-accrual status when scheduled principal or interest payments are past due for 90 days or more or when the borrower’s ability to repay becomes doubtful. Uncollected accrued interest for each class of loans is reversed against income at the time a loan is placed on non-accrual. Interest received on such loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. All classes of loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. Loans are typically charged-off at 180 days past due, or earlier if deemed uncollectible. Exceptions to the non-accrual and charge-off policies are made when the loan is well secured and in the process of collection.
Certain Purchased Loans	Certain Purchased Loans The Company purchases individual loans and groups of loans. Purchased loans that show evidence of credit deterioration since origination are recorded at the amount paid (or allocated fair value in a purchase business combination), such that there is no carryover of the seller’s allowance for loan losses. After acquisition, incurred losses are recognized by an increase in the allowance for loan losses. Such purchased loans are accounted for individually. The Company estimates the amount and timing of expected cash flows for each purchased loan and the expected cash flows in excess of amount paid is recorded as interest income over the remaining life of the loan (accretable yield). The excess of the loan’s contractual principal and interest over expected cash flows is not recorded (nonaccretable difference). Over the life of the loan, expected cash flows continue to be estimated. If the present value of expected cash flows is less than the carrying amount, a loss is recorded. If the present value of expected cash flows is greater than the carrying amount, it is recognized as part of future interest income.
Allowance for Loan Losses	Allowance for Loan Losses The allowance for loan losses is a valuation allowance for probable incurred credit losses. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance. Management estimates the allowance balance required using past loan loss experience, the nature and volume of the portfolio, information about specific borrower situations and estimated collateral values, economic conditions, and other factors. Allocations of the allowance may be made for specific loans, but the entire allowance is available for any loan that, in management’s judgment, should be charged-off. The allowance consists of specific and general components. The specific component relates to loans that are individually classified as impaired or loans otherwise classified as substandard or special mention. The general component covers non-classified loans and is based on historical loss experience adjusted for current factors. Loan impairment is reported when full repayment under the terms of the loan is not expected. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported net, at the present value of estimated future cash flows using the loan’s existing rate, or at the fair value of collateral if repayment is expected solely from the collateral. Commercial and industrial loans, commercial real estate loans, and agricultural loans are evaluated individually for impairment. Smaller balance homogeneous loans are evaluated for impairment in total. Such loans include real estate loans secured by one-to-four family residences and loans to individuals for household, family and other personal expenditures. Individually evaluated loans on non-accrual are generally considered impaired. Impaired loans, or portions thereof, are charged off when deemed uncollectible. Troubled debt restructurings are separately identified for impairment disclosures and are measured at the present value of estimated future cash flows using the loan’s effective rate at inception. If a troubled debt restructuring is considered to be a collateral dependent loan, the loan is reported at the fair value of the collateral net of disposition costs. For troubled debt restructurings that subsequently default, the Company determines the amount of reserve in accordance with the accounting policy for the allowance for loan losses. The general component of the allowance for loan losses covers non-impaired loans and is based on historical loss experience adjusted for current factors. The historical loss experience is determined by portfolio segment and risk classifications and is based on the actual loss history experienced by the Company over a 20 quarter average. The Company separately assigns allocations for substandard and special mention commercial and agricultural credits as well as other categories of loans based on migration analysis techniques. This actual loss experience is supplemented with other external and internal factors based on the risks present for each portfolio segment. These factors include consideration of the following: levels of and trends in delinquencies and impaired loans; levels of and trends in charge-offs and recoveries; trends in volume and terms of loans; effects of any changes in risk selection and underwriting standards; other changes in lending policies, procedures, and practices; experience, ability, and depth of lending management and other relevant staff; national and local economic trends and conditions; industry conditions; and effects of changes in credit concentrations. The following portfolio segments have been identified: Commercial Loans and Retail Loans. Commercial Loans have been classified according to the following risk characteristics: Commercial and Industrial Loans and Leases, Commercial Real Estate, and Agricultural Loans. Commercial and Industrial loans are primarily based on the cash flows of the business operations and secured by assets being financed and other assets such as accounts receivable and inventory. Commercial Real Estate Loans and Agricultural Loans are primarily based on cash flow of the borrower and their business and further secured by real estate. All types of commercial and agricultural (real estate secured and non-real estate) may also come with personal guarantees of the borrowers and business owners. Retail Loans have been classified according to the following risk characteristics: Home Equity Loans, Consumer Loans and Residential Mortgage Loans. Retail loans are generally dependent on personal income of the customer, and repayment is dependent on borrower’s personal cash flow and employment status which can be affected by general economic conditions. Additionally, collateral values may fluctuate based on the impact of economic conditions on residential real estate values and other consumer type assets such as automobiles. Loans or portions of loans shall be charged off when there is a distinct probability of loss identified. A distinct probability of loss exists when it has been determined that any remaining sources of repayment are insufficient to cover all outstanding principal. The probable loss is immediately calculated based on the value of the remaining sources of repayment and charged to the allowance for loan loss.
Servicing Rights	Servicing Rights When mortgage loans are sold with servicing retained, servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. Fair value is based on market prices for comparable mortgage servicing contracts when available or, alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans. Through the acquisition of River Valley Bancorp in 2016, German American acquired a portfolio of servicing rights on mortgage loans. The fair value of mortgage servicing rights were $547 and $611 at December 31, 2017 and 2016, respectively. On a quarterly basis, loan servicing rights are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. The valuation model utilizes interest rate, prepayment speed, and default rate assumptions that market participants would use in estimating future net servicing income and that can be validated against available market data. Servicing fee income is reported on the income statement as other operating income. The fees are based on a contractual percentage of the outstanding principal and are recorded as income when earned. The amortization of mortgage servicing right is netted against loan servicing fee income.
Federal Home Loan Bank (FHLB) Stock	Federal Home Loan Bank (FHLB) Stock The Bank is a member of the FHLB of Indianapolis. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock is carried at cost, classified as a restricted security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income.
Premises, Furniture and Equipment	Premises, Furniture and Equipment Land is carried at cost. Premises, furniture, and equipment are stated at cost less accumulated depreciation. Buildings and related components are depreciated using the straight-line method with useful lives ranging generally from 10 to 40 years. Furniture, fixtures, and equipment are depreciated using the straight-line method with useful lives ranging generally from 3 to 10 years.
Other Real Estate	Other Real Estate Assets acquired through or instead of loan foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. If fair value declines subsequent to foreclosure, a valuation allowance is recorded through expense. Operating costs after acquisition are expensed.
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill resulting from business combinations prior to January 1, 2009 represents the excess of the purchase price over the fair value of the net assets of businesses acquired. Goodwill resulting from business combinations after January 1, 2009, is generally determined as the excess of the fair value of the consideration transferred, plus the fair value of any noncontrolling interests in the acquiree, over the fair value of the net assets acquired and liabilities assumed as of the acquisition date. Goodwill and intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but tested for impairment at least annually. The Company has selected December 31 as the date to perform the annual impairment test. Intangible assets with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Goodwill is the only intangible asset with an indefinite life on the Company’s balance sheet. Other intangible assets consist of core deposit and acquired customer relationship intangible assets. They are initially measured at fair value and then are amortized over their estimated useful lives, which range from 6 to 10 years.
Company Owned Life Insurance	Company Owned Life Insurance The Company has purchased life insurance policies on certain directors and executives. This life insurance is recorded at its cash surrender value or the amount that can be realized, which considers any adjustments or changes that are probable at settlement.
Loss Contingencies	Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe currently that there are any such matters that will have a material impact on the financial statements.
Loan Commitments and Related Financial Instruments	Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded.
Restrictions on Cash	Restrictions on Cash At December 31, 2017 and 2016, respectively, the Company was required to have $10,967 and $11,659 on deposit with the Federal Reserve, or as cash on hand.
Long-term Assets	Long-term Assets Premises and equipment, core deposit and other intangible assets, and other long-term assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are recorded at fair value.
Stock Based Compensation	Stock Based Compensation Compensation cost is recognized for stock options and restricted stock awards issued to employees and directors, based on the fair value of these awards at the date of grant. A Black-Scholes model is utilized to estimate the fair value of stock options, while the market price of the Corporation’s common stock at the date of grant is used for restricted stock awards. Compensation cost is recognized over the required service period, generally defined as the vesting period.
Comprehensive Income	Comprehensive Income Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities available for sale and changes in unrecognized amounts in pension and other postretirement benefits, which are also recognized as a separate component of equity.
Income Taxes	Income Taxes Income tax is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax liabilities and assets are determined at each balance sheet date and are the result of differences in the financial statement and tax bases of assets and liabilities. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded.
Retirement Plans	Retirement Plans Pension expense under the suspended defined benefit plan is the net of interest cost, return on plan assets and amortization of gains and losses not immediately recognized. Employee 401(k) and profit sharing plan expense is the amount of matching contributions. Deferred compensation and supplemental retirement plan expense allocates the benefits over years of service.
Earnings Per Share	Earnings Per Share Earnings per share are based on net income divided by the weighted average number of shares outstanding during the period. Diluted earnings per share show the potential dilutive effect of additional common shares issuable under the Company’s stock based compensation plans. Earnings per share are retroactively restated for stock splits and stock dividends.
Cash Flow Reporting	Cash Flow Reporting The Company reports net cash flows for customer loan transactions, deposit transactions, deposits made with other financial institutions and short-term borrowings. Cash and cash equivalents are defined to include cash on hand, demand deposits in other institutions and Federal Funds Sold.
Fair Value of Financial Instruments	Fair Values of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in Note 15. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates.
Fair Value Measurements	Fair value is the exchange price that would be received for an asset or paid to transfer a liability (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. There are three levels of inputs that may be used to measure fair values: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. The Company used the following methods and significant assumptions to estimate the fair value of each type of financial instrument: Investment Securities: The fair values for investment securities are determined by quoted market prices, if available (Level 1). For securities where quoted prices are not available, fair values are calculated based on market prices of similar securities (Level 2). For securities where quoted prices or market prices of similar securities are not available, fair values are calculated using discounted cash flows or other market indicators (Level 3). Level 3 pricing is obtained from a third-party based upon similar trades that are not traded frequently without adjustment by the Company. At December 31, 2017, the Company held $6.0 million in Level 3 securities which consist of $5.6 million of non-rated Obligations of State and Political Subdivisions and $353 thousand of equity securities that are not actively traded. Absent the credit rating, significant assumptions must be made such that the credit risk input becomes an unobservable input and thus these securities are reported by the Company in a Level 3 classification. Derivatives: The fair values of derivatives are based on valuation models using observable market data as of the measurement date (Level 2). Impaired Loans: Fair values for impaired collateral dependent loans are generally based on appraisals obtained from licensed real estate appraisers and in certain circumstances consideration of offers obtained to purchase properties prior to foreclosure. Appraisals for commercial real estate generally use three methods to derive value: cost, sales or market comparison and income approach. The cost method bases value in the cost to replace the current property. Value of market comparison approach evaluates the sales price of similar properties in the same market area. The income approach considers net operating income generated by the property and an investor's required return. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Comparable sales adjustments are based on known sales prices of similar type and similar use properties and duration of time that the property has been on the market to sell. Such adjustments made in the appraisal process are typically significant and result in a Level 3 classification of the inputs for determining fair value. Appraisals for both collateral-dependent impaired loans and other real estate owned are performed by certified general appraisers (for commercial properties) or certified residential appraisers (for residential properties) whose qualifications and licenses have been reviewed and verified by the Company. Once received, a member of the Company’s Risk Management Area reviews the assumptions and approaches utilized in the appraisal. In determining the value of impaired collateral dependent loans and other real estate owned, significant unobservable inputs may be used which include: physical condition of comparable properties sold, net operating income generated by the property and investor rates of return. Other Real Estate: Nonrecurring adjustments to certain commercial and residential real estate properties classified as other real estate (ORE) are measured at the lower of carrying amount or fair value, less costs to sell. Fair values are generally based on third party appraisals of the property utilizing similar techniques as discussed above for Impaired Loans, resulting in a Level 3 classification. In cases where the carrying amount exceeds the fair value, less costs to sell, impairment loss is recognized. Loan Servicing Rights: On a quarterly basis, loan servicing rights are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. The valuation model utilizes interest rate, prepayment speed, and default rate assumptions that market participants would use in estimating future net servicing income and that can be validated against available market data. Loans Held-for-Sale: The fair values of loans held for sale are determined by using quoted prices for similar assets, adjusted for specific attributes of that loan resulting in a Level 2 classification. Cash and Short-Term Investments: The carrying amount of cash and short-term investments approximate fair values and are classified as Level 1 or Level 2. FHLB Stock and Other Restricted Stock: It is not practical to determine the fair values of FHLB stock and other restricted stock due to restrictions placed on their transferability. Loans: Fair values of loans, excluding loans held for sale and collateral dependent impaired loans carried at fair value, are estimated as follows: For variable rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values resulting in a Level 3 classification. Fair values for other loans are estimated using discounted cash flow analysis, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality resulting in a Level 3 classification. Impaired loans are valued as described previously. The methods utilized to estimate fair value of loans do not necessarily represent an exit price. Accrued Interest Receivable: The carrying amount of accrued interest approximates fair value resulting in a Level 2 or Level 3 classification consistent with the asset they are associated with. Deposits: The fair values disclosed for demand deposits (e.g., interest and non-interest checking, savings and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amount) resulting in a Level 1 classification. Fair values for fixed rate time deposits are estimated using a discounted cash flows calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits resulting in a Level 2 classification. Short-term Borrowings: The carrying amounts of federal funds purchased, borrowings under repurchase agreements, and other short-term borrowings, generally maturing within ninety days, approximate their fair values resulting in a Level 2 classification. Long-Term Debt: The fair values of the Company’s long-term borrowings are estimated using discounted cash flow analyses based on the current borrowing rates for similar types of borrowing arrangements resulting in a Level 2 classification. The fair values of the Company’s subordinated debentures are estimated using discounted cash flow analyses based on the current borrowing rates for similar types of borrowing arrangements resulting in a Level 3 classification. Accrued Interest Payable: The carrying amount of accrued interest approximates fair value resulting in a Level 2 or Level 3 classification consistent with the liability they are associated with.
New Accounting Pronouncements	New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (the "FASB") amended existing guidance (ASU 2014-09 Revenue From Contracts With Customers (Topic 606)) related to revenue from contracts with customers. This amendment supersedes and replaces nearly all existing revenue recognition guidance, including industry-specific guidance, establishes a new control-based revenue recognition model, changes the basis for deciding when revenue is recognized over time or at a point in time, provides new and more detailed guidance on specific topics and expands and improves disclosures about revenue. In addition, this amendment specifies the accounting for some costs to obtain or fulfill a contract with a customer. These amendments are effective for public business entities for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. The amendments allow for one of two transition methods: full retrospective or modified retrospective. The full retrospective approach requires application to all periods presented. The modified retrospective transition requires application to uncompleted contracts at the date of adoption. Periods prior to the date of adoption are not retrospectively revised, but a cumulative effect is recognized at the date of initial application on uncompleted contracts. The Company adopted the new guidance effective January 1, 2018 and intends to utilize the modified retrospective method. The Company established a task force for evaluating the impact of ASU 2014-09 on the Company's consolidated results. The new standard did not result in a material change in the manner in which it recognizes revenue because the majority of the Company's financial instruments are not within the scope of Topic 606. Revenue streams within Other Noninterest Income that the Company evaluated primarily included Service Charges on Deposit Accounts, Trust and Investment Product Fees, and Insurance Revenues. This pronouncement will not have a material impact on the Company's consolidated results of operations and financial condition as the Company's core revenue does not fall under this guidance. Even though this pronouncement will not have a material impact on the Company's consolidated results, the Company will have additional disclosures in its Form 10-Q for the first quarter of 2018 as required by this guidance. In January 2016, the FASB amended existing guidance (ASU 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities) that requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. It requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes. It requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables). It eliminates that requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. These amendments are effective for public business entities for fiscal years beginning after December 15, 2017, including interim periods within that reporting period. The Company notes that the impact of adoption is to carry the equity security at fair value through the income statement or at cost, less impairment when fair value is not readily determinable, with observable price changes being recognized in earnings. The Company doesn't expect the impact to have a material effect on the Company's operating results or financial condition; however, it will impact the fair value disclosures included in Note 15 - Fair Value. For additional information on this equity security, see Note 2 - Securities. In February 2016, the FASB amended existing guidance (ASU No. 2016-02, Leases (Topic 842)) that requires lessees recognize the following for all leases (with the exception of short-term leases) at the commencement date (1) A lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and (2) A right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. These amendments are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within that reporting period. Based on our leases outstanding as of December 31, 2017, the Company does not expect this new guidance to have a material impact on the consolidated results of operation. However as a result of this new guidance, the Company anticipates an estimated increase in its Consolidated Balance Sheet of approximately $6,000 . This impact will vary based on the Company's future decisions to enter into new lease agreements or exit/renew current lease agreements prior to the date of implementation. In June 2016, the FASB issued guidance (ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326)) to replace the incurred loss model with an expected loss model, which is referred to as the current expected credit loss (CECL) model. The CECL model is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables, held-to-maturity debt securities, and reinsurance receivables. It also applies to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor. This standard will be effective for public business entities for fiscal years beginning after December 15, 2019, including interim periods within that reporting period. Transition: • For debt securities with other-than-temporary impairment (OTTI), the guidance will be applied prospectively. • Existing purchased credit impaired (PCI) assets will be grandfathered and classified as purchased credit deteriorated (PCD) assets at the date of adoption. The asset will be grossed up for the allowance for expected credit losses for all PCD assets at the date of adoption and will continue to recognize the noncredit discount in interest income based on the yield of such assets as of the adoption date. Subsequent changes in expected credit losses will be recorded through the allowance. • For all other assets within the scope of CECL, a cumulative-effect adjustment will be recognized in retained earnings as of the beginning of the first reporting period in which the guidance is effective. The Company has formed a CECL committee that is assessing data and system needs in order to evaluate the impact of adopting the new guidance. The Company expects to recognize a one-time cumulative adjustment to the allowance for loan losses as of the beginning of the first reporting period in which the new standard is effective, but can not estimate the amount at this time. In August 2016, the FASB issued ASU (ASU No. 2016-15, Statement of Cash Flows (Topic 320): Classification of Certain Cash Receipts and Cash Payments) to address the diversity in how certain cash receipts and cash payments are presented and classified in the statement of cash flows including the following: • Debt Prepayment or Debt Extinguishment Costs; • Settlement of Zero-Coupon Bonds or Debt with Coupon Interest Rates That Are Insignificant in Relation to the Effective Interest Rate; • Contingent Consideration payments Made Soon After a Business Combination; • Proceeds From the Settlement of Insurance Claims; • Proceeds From the Settlement of BOLI and COLI Policies; • Distributions Received From Equity Method Investees; • Beneficial Interests in Securitization Transactions; and • Application of the Predominance Principle. These amendments are effective for public business entities beginning January 1, 2018. This guidance currently has no material impact on the Company's Consolidated Statements of Cash Flows; however, the Company will continue to monitor it going forward. In March 2017, the FASB amended existing guidance (ASU No. 2017-08, Receivables-Nonrefundable Fees and Other Costs (Subtopic 310-20)) to amend the amortization period for certain purchased callable debt securities held at a premium. The amortization period has been shortened to the earliest call date. Under current generally accepted accounting principles, entities generally amortize the premium as an adjustment of yield over the contractual life of the instrument. These amendments are effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. The Company early adopted this guidance in 2017 and it did not have a material impact on the Company's operating results or financial condition. In January 2018, the FASB issued new guidance (ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220)) to allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. The amendments eliminate the stranded tax effects resulting from the Tax Cuts and Jobs Act and will improve the usefulness of information reported to financial statement users. This amendment is effective for public business entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. The Company early adopted this guidance in 2017 and it did not have a material impact on the Company's operating results or financial condition.

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2017
Investments [Abstract]
Schedule of Securities Available-for-Sale	The amortized cost, unrealized gross gains and losses recognized in accumulated other comprehensive income (loss), and fair value of Securities Available-for-Sale were as follows: Securities Available-for-Sale: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2017 Obligations of State and Political Subdivisions $ 267,437 $ 6,733 $ (861 ) $ 273,309 MBS/CMO – Residential 476,205 416 (9,289 ) 467,332 Equity Securities 353 — — 353 Total $ 743,995 $ 7,149 $ (10,150 ) $ 740,994 2016 Obligations of State and Political Subdivisions $ 247,350 $ 3,847 $ (3,678 ) $ 247,519 MBS/CMO - Residential 471,852 480 (10,418 ) 461,914 Equity Securities 353 — — 353 Total $ 719,555 $ 4,327 $ (14,096 ) $ 709,786
Schedule of Securities by Contractual Maturity	The amortized cost and fair value of Securities at December 31, 2017 by contractual maturity are shown below. Expected maturities may differ from contractual maturities because some issuers have the right to call or prepay certain obligations with or without call or prepayment penalties. Mortgage-backed and Equity Securities are not due at a single maturity date and are shown separately. Amortized Cost Fair Value Securities Available-for-Sale: Due in one year or less $ 2,706 $ 2,739 Due after one year through five years 23,789 24,531 Due after five years through ten years 78,661 81,215 Due after ten years 162,281 164,824 MBS/CMO - Residential 476,205 467,332 Equity Securities 353 353 Total $ 743,995 $ 740,994
Schedule of Proceeds from the Sales of Securities	2017 2016 2015 Proceeds from the Sales of Securities are summarized below: Available- for-Sale Available- for-Sale Available- for-Sale Proceeds from Sales $ 49,459 $ 165,102 $ 18,999 Gross Gains on Sales 596 1,979 725 Income Taxes on Gross Gains 209 693 254
Schedule of Securities with Unrealized Losses	Below is a summary of securities with unrealized losses as of year-end 2017 and 2016, presented by length of time the securities have been in a continuous unrealized loss position: Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss At December 31, 2017 Obligations of State and Political Subdivisions $ 33,230 $ (237 ) $ 24,161 $ (624 ) $ 57,391 $ (861 ) MBS/CMO - Residential 172,354 (2,048 ) 250,520 (7,241 ) 422,874 (9,289 ) Equity Securities — — — — — — Total $ 205,584 $ (2,285 ) $ 274,681 $ (7,865 ) $ 480,265 $ (10,150 ) Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss At December 31, 2016 Obligations of State and Political Subdivisions $ 108,918 $ (3,678 ) $ — $ — $ 108,918 $ (3,678 ) MBS/CMO - Residential 356,040 (8,782 ) 47,271 (1,636 ) 403,311 (10,418 ) Equity Securities — — — — — — Total $ 464,958 $ (12,460 ) $ 47,271 $ (1,636 ) $ 512,229 $ (14,096 )

Derivatives (Tables)

Derivatives (Tables)	12 Months Ended
	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments And Hedging Activities	The following table reflects the fair value hedges included in the Consolidated Balance Sheets as of: December 31, 2017 December 31, 2016 Notional Amount Fair Value Notional Amount Fair Value Included in Other Assets: Interest Rate Swaps $ 87,788 $ 1,564 $ 67,902 $ 1,291 Included in Other Liabilities: Interest Rate Swaps $ 87,788 $ 1,633 $ 67,902 $ 1,238
Derivative Instruments Consolidated Statement	The following table presents the effect of derivative instruments on the Consolidated Statements of Income for the years ended December 31, 2017, 2016 and 2015 are as follows: 2017 2016 2015 Interest Rate Swaps: Included in Other Income $ 478 $ 1,207 $ 491

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2017
Receivables [Abstract]
Classifications of Loans	Loans were comprised of the following classifications at December 31: 2017 2016 Commercial: Commercial and Industrial Loans and Leases $ 486,668 $ 457,372 Commercial Real Estate Loans 926,729 856,094 Agricultural Loans 333,227 303,128 Retail: Home Equity Loans 152,187 133,575 Consumer Loans 67,475 59,945 Residential Mortgage Loans 178,733 183,290 Subtotal 2,145,019 1,993,404 Less: Unearned Income (3,381 ) (3,449 ) Allowance for Loan Losses (15,694 ) (14,808 ) Loans, net $ 2,125,944 $ 1,975,147
Schedule of Activity in Allowance for Loan Losses	The following tables present the activity in the allowance for loan losses by portfolio class for the years ended December 31, 2017, 2016, and 2015: Commercial and Industrial Loans and Leases Commercial Real Estate Loans Agricultural Loans Home Equity Loans Consumer Loans Residential Mortgage Loans Unallocated Total December 31, 2017 Beginning Balance $ 3,725 $ 5,452 $ 4,094 $ 283 $ 235 $ 329 $ 690 $ 14,808 Provision for Loan Losses 1,147 (689 ) 840 78 517 44 (187 ) 1,750 Recoveries 14 48 9 8 272 63 — 414 Loans Charged-off (151 ) (220 ) (49 ) (39 ) (726 ) (93 ) — (1,278 ) Ending Balance $ 4,735 $ 4,591 $ 4,894 $ 330 $ 298 $ 343 $ 503 $ 15,694 Commercial and Industrial Loans and Leases Commercial Real Estate Loans Agricultural Loans Home Equity Loans Consumer Loans Residential Mortgage Loans Unallocated Total December 31, 2016 Beginning Balance $ 4,242 $ 6,342 $ 2,115 $ 383 $ 230 $ 414 $ 712 $ 14,438 Provision for Loan Losses (483 ) (846 ) 2,000 33 273 245 (22 ) 1,200 Recoveries 32 10 1 3 208 16 — 270 Loans Charged-off (66 ) (54 ) (22 ) (136 ) (476 ) (346 ) — (1,100 ) Ending Balance $ 3,725 $ 5,452 $ 4,094 $ 283 $ 235 $ 329 $ 690 $ 14,808 Commercial and Industrial Loans and Leases Commercial Real Estate Loans Agricultural Loans Home Equity Loans Consumer Loans Residential Mortgage Loans Unallocated Total December 31, 2015 Beginning Balance $ 4,627 $ 7,273 $ 1,123 $ 246 $ 354 $ 622 $ 684 $ 14,929 Provision for Loan Losses (451 ) (688 ) 992 160 (48 ) 7 28 — Recoveries 102 107 — 10 236 18 — 473 Loans Charged-off (36 ) (350 ) — (33 ) (312 ) (233 ) — (964 ) Ending Balance $ 4,242 $ 6,342 $ 2,115 $ 383 $ 230 $ 414 $ 712 $ 14,438
Schedule of Allowance for Loan Losses and Recorded Investment in Loans	The following tables present the balance in the allowance for loan losses and the recorded investment in loans by portfolio class and based on impairment method as of December 31, 2017 and 2016: December 31, 2017 Total Commercial and Industrial Loans and Leases Commercial Real Estate Loans Agricultural Loans Home Equity Loans Consumer Loans Residential Mortgage Loans Unallocated Allowance for Loan Losses: Ending Allowance Balance Attributable to Loans: Individually Evaluated for Impairment $ 2,228 $ 1,399 $ 829 $ — $ — $ — $ — $ — Collectively Evaluated for Impairment 13,455 3,333 3,759 4,894 330 298 338 503 Acquired with Deteriorated Credit Quality 11 3 3 — — — 5 — Total Ending Allowance Balance $ 15,694 $ 4,735 $ 4,591 $ 4,894 $ 330 $ 298 $ 343 $ 503 Loans: Loans Individually Evaluated for Impairment $ 11,633 $ 5,918 $ 5,552 $ 163 $ — $ — $ — n/m (2) Loans Collectively Evaluated for Impairment 2,133,752 481,152 917,036 336,849 152,757 67,647 178,311 n/m (2) Loans Acquired with Deteriorated Credit Quality 9,117 988 6,452 789 — — 888 n/m (2) Total Ending Loans Balance (1) $ 2,154,502 $ 488,058 $ 929,040 $ 337,801 $ 152,757 $ 67,647 $ 179,199 n/m (2) (1) Total recorded investment in loans includes $9,483 in accrued interest. (2) n/m = not meaningful December 31, 2016 Total Commercial and Industrial Loans and Leases Commercial Real Estate Loans Agricultural Loans Home Equity Loans Consumer Loans Residential Mortgage Loans Unallocated Allowance for Loan Losses: Ending Allowance Balance Attributable to Loans: Individually Evaluated for Impairment $ 255 $ 24 $ 231 $ — $ — $ — $ — $ — Collectively Evaluated for Impairment 14,448 3,698 5,172 4,046 283 230 329 690 Acquired with Deteriorated Credit Quality 105 3 49 48 — 5 — — Total Ending Allowance Balance $ 14,808 $ 3,725 $ 5,452 $ 4,094 $ 283 $ 235 $ 329 $ 690 Loans: Loans Individually Evaluated for Impairment $ 1,239 $ 113 $ 832 $ 294 $ — $ — $ — n/m (2) Loans Collectively Evaluated for Impairment 1,989,128 456,769 849,510 305,946 134,032 60,046 182,825 n/m (2) Loans Acquired with Deteriorated Credit Quality 11,048 1,656 7,688 706 — 53 945 n/m (2) Total Ending Loans Balance (1) $ 2,001,415 $ 458,538 $ 858,030 $ 306,946 $ 134,032 $ 60,099 $ 183,770 n/m (2) (1) Total recorded investment in loans includes $8,011 in accrued interest. (2) n/m = not meaningful
Schedule of Loans Individually Evaluated for Impairment	The following tables present loans individually evaluated for impairment by class of loans as of December 31, 2017 and 2016: Unpaid Principal Balance (1) Recorded Investment Allowance for Loan Losses Allocated December 31, 2017 With No Related Allowance Recorded: Commercial and Industrial Loans and Leases $ 1,205 $ 1,166 $ — Commercial Real Estate Loans 1,812 1,495 — Agricultural Loans 919 749 — Subtotal 3,936 3,410 — With An Allowance Recorded: Commercial and Industrial Loans and Leases 4,804 4,763 1,402 Commercial Real Estate Loans 4,489 4,465 832 Agricultural Loans — — — Subtotal 9,293 9,228 2,234 Total $ 13,229 $ 12,638 $ 2,234 Loans Acquired With Deteriorated Credit Quality With No Related Allowance Recorded (Included in the Total Above) $ 1,255 $ 797 $ — Loans Acquired With Deteriorated Credit Quality With An Additional Allowance Recorded (Included in the Total Above) $ 252 $ 208 $ 6 (1) Unpaid Principal Balance is the remaining contractual payments gross of partial charge-offs and discounts. Unpaid Principal Balance (1) Recorded Investment Allowance for Loan Losses Allocated December 31, 2016 With No Related Allowance Recorded: Commercial and Industrial Loans and Leases $ 85 $ 29 $ — Commercial Real Estate Loans 1,278 784 — Agricultural Loans 356 294 — Subtotal 1,719 1,107 — With An Allowance Recorded: Commercial and Industrial Loans and Leases 148 107 27 Commercial Real Estate Loans 839 827 280 Agricultural Loans 588 497 48 Subtotal 1,575 1,431 355 Total $ 3,294 $ 2,538 $ 355 Loans Acquired With Deteriorated Credit Quality With No Related Allowance Recorded (Included in the Total Above) $ 1,018 $ 531 $ — Loans Acquired With Deteriorated Credit Quality With An Additional Allowance Recorded (Included in the Total Above) $ 910 $ 768 $ 100 (1) Unpaid Principal Balance is the remaining contractual payments gross of partial charge-offs and discounts. The following tables present loans individually evaluated for impairment by class of loans for the years ended December 31, 2017, 2016 and 2015: Average Recorded Investment Interest Income Recognized Cash Basis Recognized December 31, 2017 With No Related Allowance Recorded: Commercial and Industrial Loans and Leases $ 635 $ 27 $ 2 Commercial Real Estate Loans 1,184 57 29 Agricultural Loans 690 24 16 Subtotal 2,509 108 47 With An Allowance Recorded: Commercial and Industrial Loans and Leases 1,986 4 2 Commercial Real Estate Loans 2,842 17 6 Agricultural Loans 363 — — Subtotal 5,191 21 8 Total $ 7,700 $ 129 $ 55 Loans Acquired With Deteriorated Credit Quality With No Related Allowance Recorded (Included in the Total Above) $ 792 $ 25 $ 25 Loans Acquired With Deteriorated Credit Quality With An Additional Allowance Recorded (Included in the Total Above) $ 238 $ 19 $ 7 Average Recorded Investment Interest Income Recognized Cash Basis Recognized December 31, 2016 With No Related Allowance Recorded: Commercial and Industrial Loans and Leases $ 295 $ 29 $ 15 Commercial Real Estate Loans 1,688 92 73 Agricultural Loans 461 2 1 Subtotal 2,444 123 89 With An Allowance Recorded: Commercial and Industrial Loans and Leases 102 1 1 Commercial Real Estate Loans 1,587 6 2 Agricultural Loans 249 — — Subtotal 1,938 7 3 Total $ 4,382 $ 130 $ 92 Loans Acquired With Deteriorated Credit Quality With No Related Allowance Recorded (Included in the Total Above) $ 489 $ 21 $ 10 Loans Acquired With Deteriorated Credit Quality With An Additional Allowance Recorded (Included in the Total Above) $ 711 $ — $ — Average Recorded Investment Interest Income Recognized Cash Basis Recognized December 31, 2015 With No Related Allowance Recorded: Commercial and Industrial Loans and Leases $ 447 $ 29 $ 29 Commercial Real Estate Loans 1,282 104 103 Agricultural Loans 9 1 1 Subtotal 1,738 134 133 With An Allowance Recorded: Commercial and Industrial Loans and Leases 1,726 89 89 Commercial Real Estate Loans 2,840 5 3 Agricultural Loans — — — Subtotal 4,566 94 92 Total $ 6,304 $ 228 $ 225 Loans Acquired With Deteriorated Credit Quality With No Related Allowance Recorded (Included in the Total Above) $ 196 $ — $ — Loans Acquired With Deteriorated Credit Quality With An Additional Allowance Recorded (Included in the Total Above) $ — $ — $ —
Schedule of Recorded Investment in Non-accrual Loans	The following tables present the recorded investment in non-accrual loans and loans past due 90 days or more still on accrual by class of loans as of December 31, 2017 and 2016: Loans Past Due 90 Days or More Non-Accrual & Still Accruing 2017 2016 2017 2016 Commercial and Industrial Loans and Leases $ 4,753 $ 86 $ — $ 2 Commercial Real Estate Loans 4,618 1,408 474 — Agricultural Loans 748 792 268 — Home Equity Loans 199 73 — — Consumer Loans 286 85 — — Residential Mortgage Loans 487 1,349 — — Total $ 11,091 $ 3,793 $ 742 $ 2 Loans Acquired With Deteriorated Credit Quality (Included in the Total Above) $ 866 $ 1,264 $ — $ —
Schedule of Aging of Recorded Investment in Past Due Loans	The following tables present the aging of the recorded investment in past due loans by class of loans as of December 31, 2017 and 2016: Total 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total Past Due Loans Not Past Due December 31, 2017 Commercial and Industrial Loans and Leases $ 488,058 $ 209 $ 1,365 $ 905 $ 2,479 $ 485,579 Commercial Real Estate Loans 929,040 1,229 1,650 677 3,556 925,484 Agricultural Loans 337,801 27 — 268 295 337,506 Home Equity Loans 152,757 366 93 199 658 152,099 Consumer Loans 67,647 246 97 286 629 67,018 Residential Mortgage Loans 179,199 2,850 1,247 261 4,358 174,841 Total (1) $ 2,154,502 $ 4,927 $ 4,452 $ 2,596 $ 11,975 $ 2,142,527 Loans Acquired With Deteriorated Credit Quality (Included in the Total Above) $ 9,117 $ 342 $ 74 $ 27 $ 443 $ 8,674 (1) Total recorded investment in loans includes $9,483 in accrued interest. Total 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Past Due Total Past Due Loans Not Past Due December 31, 2016 Commercial and Industrial Loans and Leases $ 458,538 $ 20 $ 4 $ 77 $ 101 $ 458,437 Commercial Real Estate Loans 858,030 1,509 21 330 1,860 856,170 Agricultural Loans 306,946 84 50 610 744 306,202 Home Equity Loans 134,032 707 16 73 796 133,236 Consumer Loans 60,099 175 147 85 407 59,692 Residential Mortgage Loans 183,770 3,470 1,251 806 5,527 178,243 Total (1) $ 2,001,415 $ 5,965 $ 1,489 $ 1,981 $ 9,435 $ 1,991,980 Loans Acquired With Deteriorated Credit Quality (Included in the Total Above) $ 11,048 $ 130 $ — $ 627 $ 757 $ 10,291 Loans Acquired in Current Year (Included in the Total Above) $ 262,809 $ 2,752 $ 862 $ 1,126 $ 4,740 $ 258,069 (1) Total recorded investment in loans includes $8,011 in accrued interest.
Schedule of Recorded Investment of Troubled Debt Restructurings	The following tables present the recorded investment of troubled debt restructurings by class of loans as of December 31, 2017 and 2016: Total Performing Non-Accrual (1) December 31, 2017 Commercial and Industrial Loans and Leases $ 258 $ 125 $ 133 Commercial Real Estate Loans 24 24 — Total $ 282 $ 149 $ 133 Total Performing Non-Accrual (1) December 31, 2016 Commercial and Industrial Loans and Leases $ 28 $ 28 $ — Commercial Real Estate Loans — — — Total $ 28 $ 28 $ — (1) The non-accrual troubled debt restructurings are included in the Non-Accrual Loan table presented on a previous page.
Schedule of Loans by Class Modified as Troubled Debt Restructuring	The following table presents loans by class modified as troubled debt restructurings that occurred during the year ended December 31, 2017: Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment December 31, 2017 Commercial and Industrial Loans and Leases 2 $ 477 $ 477 Commercial Real Estate Loans 1 28 28 Total 3 $ 505 $ 505 The troubled debt restructurings described above increased the allowance for loan losses by $149 and resulted in charge-offs of $0 during the year ending December 31, 2017.
Schedule of Risk Category of Loans	Based on the most recent analysis performed, the risk category of loans by class of loans is as follows: Pass Special Mention Substandard Doubtful Total December 31, 2017 Commercial and Industrial Loans and Leases $ 462,212 $ 7,901 $ 17,945 $ — $ 488,058 Commercial Real Estate Loans 894,027 18,037 16,976 — 929,040 Agricultural Loans 304,032 27,288 6,481 — 337,801 Total $ 1,660,271 $ 53,226 $ 41,402 $ — $ 1,754,899 Loans Acquired with Deteriorated Credit Quality (Included in the Total Above) $ 2,604 $ 1,647 $ 3,978 $ — $ 8,229 Pass Special Mention Substandard Doubtful Total December 31, 2016 Commercial and Industrial Loans and Leases $ 437,353 $ 10,454 $ 10,731 $ — $ 458,538 Commercial Real Estate Loans 814,033 26,549 17,448 — 858,030 Agricultural Loans 287,975 14,670 4,301 — 306,946 Total $ 1,539,361 $ 51,673 $ 32,480 $ — $ 1,623,514 Loans Acquired with Deteriorated Credit Quality (Included in the Total Above) $ 1,897 $ 3,121 $ 5,032 $ — $ 10,050 Loans Acquired in Current Year (Included in the Total Above) $ 175,915 $ 11,638 $ 8,145 $ — $ 195,698
Schedule of Recorded Investment in Home Equity, Consumer and Residential Mortgage Loans	The following table presents the recorded investment in home equity, consumer and residential mortgage loans based on payment activity as of December 31, 2017 and 2016: Home Equity Loans Consumer Loans Residential Mortgage Loans December 31, 2017 Performing $ 152,558 $ 67,361 $ 178,712 Nonperforming 199 286 487 Total $ 152,757 $ 67,647 $ 179,199 Loans Acquired with Deteriorated Credit Quality (Included in the Total Above) $ — $ — $ 888 Home Equity Loans Consumer Loans Residential Mortgage Loans December 31, 2016 Performing $ 133,959 $ 60,014 $ 182,421 Nonperforming 73 85 1,349 Total $ 134,032 $ 60,099 $ 183,770 Loans Acquired with Deteriorated Credit Quality (Included in the Total Above) $ — $ 53 $ 945
Schedule of Loans Purchased/Sold During the Period	The following table presents financing receivables purchased and/or sold during the year by portfolio segment: Commercial and Industrial Loans and Leases Commercial Real Estate Loans Total December 31, 2017 Purchases $ 800 $ 4,747 $ 5,547 Sales — 1,106 1,106 Commercial and Industrial Loans and Leases Commercial Real Estate Loans Total December 31, 2016 Purchases $ — $ 5,383 $ 5,383 Sales — 2,029 2,029
Schedule of Contractually Required Payments on Loans Purchased with Deteriorated Credit Quality	Contractually required payments receivable of loans purchased with evidence of credit deterioration during the year ended December 31, 2016 are included in the table below. The value of the purchased loans included in the table are as of acquisition date. There were no such loans purchased during the year ended December 31, 2017. 2017 2016 Commercial and Industrial Loans $ — $ 220 Commercial Real Estate Loans — 10,612 Agricultural Loans — 896 Home Equity Loans — — Consumer Loans — 87 Residential Mortgage Loans — 2,279 Total $ — $ 14,094 Cash Flows Expected to be Collected at Acquisition $ — $ 11,051 Fair Value of Acquired Loans at Acquisition — 8,807
Schedule of Carrying Amount of Loans with Deterioration of Credit Quality	The recorded investment of those loans at December 31 in the years presented is as follows: 2017 2016 2015 Commercial and Industrial Loans $ 988 $ 1,656 $ 1,325 Commercial Real Estate Loans 6,452 7,688 5,363 Agricultural Loans 789 706 — Consumer Loans — 53 — Residential Mortgage Loans 888 945 867 Total $ 9,117 $ 11,048 $ 7,555 Carrying Amount, Net of Allowance $ 9,106 $ 10,943 $ 7,555
Schedule of Accretable Yield, or Income Expected to be Collected	Accretable yield, or income expected to be collected, is as follows: 2017 2016 2015 Balance at January 1 $ 2,521 $ 1,279 $ 1,685 New Loans Purchased — 1,395 — Accretion of Income (425 ) (943 ) (483 ) Reclassifications from Non-accretable Difference 638 985 104 Charge-off of Accretable Yield — (195 ) (27 ) Balance at December 31 $ 2,734 $ 2,521 $ 1,279
Schedule of Loans to Shareholders	A summary of the activity of these loans follows: Balance January 1, 2017 Additions Changes in Persons Included Deductions Balance December 31, 2017 Collected Charged-off $ 14,276 $ 11,340 $ — $ (9,754 ) $ — $ 15,862

Premises, Furniture, and Equi34

Premises, Furniture, and Equipment (Tables)	12 Months Ended
	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Schedule of Premises, Furniture and Equipment	Premises, furniture, and equipment was comprised of the following classifications at December 31: 2017 2016 Land $ 11,541 $ 10,255 Buildings and Improvements 60,076 55,676 Furniture and Equipment 28,902 26,830 Total Premises, Furniture and Equipment 100,519 92,761 Less: Accumulated Depreciation (46,273 ) (44,531 ) Total $ 54,246 $ 48,230
Schedule of Capital Leased Assets	The Company has included the leases in buildings and improvements as follows: 2017 2016 Capital Leases $ 4,219 $ 4,219 Less: Accumulated Depreciation (1,312 ) (1,102 ) Total $ 2,907 $ 3,117
Schedule of Future Minimum Lease Payments under Capitalized Leases	The following is a schedule of future minimum lease payments under the capitalized leases, together with the present value of net minimum lease payments at year end 2017: 2018 $ 519 2019 519 2020 519 2021 519 2022 519 Thereafter 4,511 Total minimum lease payments 7,106 Less: Amount representing interest (3,456 ) Present Value of Net Minimum Lease Payments $ 3,650

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2017
Banking and Thrift [Abstract]
Schedule of Deposits Maturities	At year end 2017, stated maturities of time deposits were as follows: 2018 $ 221,568 2019 55,575 2020 58,106 2021 37,081 2022 15,376 Thereafter 179 Total $ 387,885

FHLB Advances and Other Borro36

FHLB Advances and Other Borrowings (Tables)	12 Months Ended
	Dec. 31, 2017
Advances from Federal Home Loan Banks [Abstract]
Schedule of Borrowings, Debt and Repurchase Agreements	Information regarding each of these types of borrowings or other indebtedness is as follows: December 31, 2017 2016 Long-term Advances from Federal Home Loan Bank collateralized by qualifying mortgages, investment securities, and mortgage-backed securities $ 126,836 $ 105,820 Junior Subordinated Debentures assumed from American Community Bancorp, Inc. 5,624 5,474 Junior Subordinated Debentures assumed from River Valley Bancorp, Inc. 5,607 5,501 Capital Lease Obligation 3,650 3,765 Long-term Borrowings 141,717 120,560 Overnight Variable Rate Advances from Federal Home Loan Bank collateralized by qualifying mortgages, investment securities, and mortgage-backed securities $ 92,000 $ 91,500 Federal Funds Purchased — 3,642 Repurchase Agreements 41,499 42,412 Short-term Borrowings 133,499 137,554 Total Borrowings $ 275,216 $ 258,114
Schedule of Repurchase Agreements	2017 2016 Average Daily Balance During the Year $ 40,476 $ 33,317 Average Interest Rate During the Year 0.47 % 0.39 % Maximum Month-end Balance During the Year $ 47,934 $ 45,313 Weighted Average Interest Rate at Year-end 0.50 % 0.50 %
Schedule of Principal Payments on Long-Term Borrowings	At December 31, 2017, scheduled principal payments on long-term FHLB Advances are as follows: 2018 $ 40,210 2019 31,075 2020 25,551 2021 5,000 2022 — Thereafter 25,000 Total $ 126,836
Schedule of Issuance of Subordinated Debentures	The following table summarizes the terms of each issuance: Date of Issuance Issuance Amount Carrying Amount at December 31, 2017 Variable Rate Rate as of December 31, 2017 Rate as of December 31, 2016 Maturity Date ACB Trust I 5/6/2005 $ 5,155 $ 3,553 90 day LIBOR + 2.15% 3.84 % 3.15 % May, 2035 ACB Trust II 7/15/2005 3,093 2,071 90 day LIBOR + 1.85% 3.30 % 2.77 % July, 2035 RIVR Statutory Trust 1 3/26/2003 7,217 5,607 3-Month LIBOR + 3.15% 4.82 % 4.15 % March, 2033

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2017
Stockholders' Equity Note [Abstract]
Schedule of Consolidated and Bank Actual Capital and Minimum Required Levels	At December 31, 2017, consolidated and bank actual capital and minimum required levels are presented below: Actual: Minimum Required For Capital Adequacy Purposes: Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Amount Ratio Amount Ratio (1) Amount Ratio Total Capital (to Risk Weighted Assets) Consolidated $ 339,391 13.62 % $ 199,363 8.00 % N/A N/A Bank 305,773 12.29 199,093 8.00 $ 248,866 10.00 % Tier 1 (Core) Capital (to Risk Weighted Assets) Consolidated $ 323,697 12.99 % $ 149,522 6.00 % N/A N/A Bank 290,079 11.66 149,320 6.00 $ 199,093 8.00 % Common Tier 1, (CET 1) Capital Ratio (to Risk Weighted Assets) Consolidated $ 312,637 12.55 % $ 112,142 4.50 % N/A N/A Bank 290,079 11.66 111,990 4.50 $ 161,763 6.50 % Tier 1 Core Capital (to Average Assets) Consolidated $ 323,697 10.71 % $ 120,862 4.00 % N/A N/A Bank 290,079 9.63 120,509 4.00 $ 150,637 5.00 % (1) Excludes capital conservation buffer. At December 31, 2016, consolidated and bank actual capital and minimum required levels are presented below: Actual: Minimum Required For Capital Adequacy Purposes: Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Amount Ratio Amount Ratio (1) Amount Ratio Total Capital (to Risk Weighted Assets) Consolidated $ 307,754 13.30 % $ 185,117 8.00 % N/A N/A Bank 288,793 12.48 185,104 8.00 $ 231,380 10.00 % Tier 1 (Core) Capital (to Risk Weighted Assets) Consolidated $ 292,946 12.66 % $ 138,838 6.00 % N/A N/A Bank 273,985 11.84 138,828 6.00 $ 185,104 8.00 % Common Tier 1, (CET 1) Capital Ratio (to Risk Weighted Assets) Consolidated $ 282,138 12.19 % $ 104,129 4.50 % N/A N/A Bank 273,985 11.84 104,121 4.50 $ 150,397 6.50 % Tier 1 Core Capital (to Average Assets) Consolidated $ 292,946 10.09 % $ 116,165 4.00 % N/A N/A Bank 273,985 9.46 115,853 4.00 $ 144,816 5.00 % (1) Excludes capital conservation buffer.
Schedule of Stock Option Activity under Equity Incentive Plan	The following table presents information related to stock options under the Company’s equity incentive plan during the years ended 2017, 2016 and 2015: 2017 2016 2015 Intrinsic Value of Options Exercised $ — $ 137 $ 559 Cash Received from Option Exercises $ — $ — $ — Tax Benefit of Option Exercises $ — $ 54 $ 224 Weighted Average Fair Value of Options Granted $ — $ — $ —
Schedule of Restricted Stock and Cash Entitlements Expense	The following table presents expense recorded for restricted stock and cash entitlements as well as the related tax effect for the years ended 2017, 2016, and 2015: 2017 2016 2015 Restricted Stock Expense $ 1,246 $ 1,407 $ 963 Cash Entitlement Expense 657 570 580 Tax Effect (746 ) (782 ) (615 ) Net of Tax $ 1,157 $ 1,195 $ 928
Schedule of Restricted Stock Grants Outstanding	The following table presents information on restricted stock grants outstanding for the period shown: Year Ended December 31, 2017 Restricted Shares Weighted Average Market Price at Grant Outstanding at Beginning of Period 53,163 $ 22.32 Granted 43,386 31.77 Issued and Vested (49,733 ) 24.79 Forfeited (510 ) 27.22 Outstanding at End of Period 46,306 $ 28.47

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2017
Retirement Benefits [Abstract]
Schedule of Changes in Accumulated Postretirement Benefits Obligations	Changes in Accumulated Postretirement Benefit Obligations: 2017 2016 Obligation at the Beginning of Year $ 814 $ 783 Unrecognized Loss (Gain) 226 24 Components of Net Periodic Postretirement Benefit Cost Service Cost 50 41 Interest Cost 29 29 Net Expected Benefit Payments (58 ) (63 ) Obligation at End of Year $ 1,061 $ 814
Schedule of Components of Postretirement Benefit Expense	Components of Postretirement Benefit Expense: 2017 2016 2015 Service Cost $ 50 $ 41 $ 42 Interest Cost 29 29 26 Amortization of Unrecognized Net (Gain) Loss 8 6 5 Net Postretirement Benefit Expense 87 76 73 Net (Gain) Loss During Period Recognized in Other Comprehensive Income (Loss) 218 18 17 Total Recognized in Net Postretirement Benefit Expense and Other Comprehensive Income $ 305 $ 94 $ 90
Schedule of Assumptions Used to Determine Net Periodic Cost and Benefit Obligations	Assumptions Used to Determine Net Periodic Cost and Benefit Obligations: 2017 2016 2015 Discount Rate 3.35 % 3.72 % 3.82 %
Schedule of Assumption of Health Care Cost Trend Rates at Year-end	Assumed Health Care Cost Trend Rates at Year-end: 2017 2016 Health Care Cost Trend Rate Assumed for Next Year 8.00 % 8.00 % Rate that the Cost Trend Rate Gradually Declines to 5.00 % 5.00 % Year that the Rate Reaches the Rate it is Assumed to Remain at 2023 2022
Schedule of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates	A one-percentage-point change in assumed health care cost trend rates would have the following effects as of December 31, 2017: One-Percentage-Point Increase One-Percentage-Point Decrease Effect on Total of Service and Interest Cost $ 7 $ (6 ) Effect on Postretirement Benefit Obligation $ 66 $ (59 )
Schedule of Estimated Future Benefits	The following postretirement benefit payments, which reflect expected future service, are expected to be paid: 2018 $ 84 2019 91 2020 86 2021 77 2022 85 2023-2027 547

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Schedule of Provision for Income Taxes	The provision for income taxes consists of the following: 2017 2016 2015 Current Federal $ 10,481 $ 11,468 $ 11,407 Current State 473 447 898 Deferred Federal 276 1,611 (920 ) Deferred State 304 420 221 Total $ 11,534 $ 13,946 $ 11,606
Schedule of Effective Income Tax Rate Reconciliation	Income tax expense is reconciled to the 35% statutory rate applied to the pre-tax income for the years presented in the table below: 2017 2016 2015 Statutory Rate Times Pre-tax Income $ 18,274 $ 17,195 $ 14,585 Add (Subtract) the Tax Effect of: Income from Tax-exempt Loans and Investments (3,304 ) (2,929 ) (2,250 ) State Income Tax, Net of Federal Tax Effect 505 564 727 General Business Tax Credits (715 ) (621 ) (750 ) Company Owned Life Insurance (469 ) (346 ) (296 ) Revaluation of Deferred Tax Assets/Liabilities due to Tax Reform (2,284 ) — — Other Differences (473 ) 83 (410 ) Total Income Taxes $ 11,534 $ 13,946 $ 11,606
Schedule of Net Deferred Tax Liability	The net deferred tax liability at December 31 consists of the following: 2017 2016 Deferred Tax Assets: Allowance for Loan Losses $ 3,645 $ 5,269 Unrealized Loss on Securities 665 3,456 Deferred Compensation and Employee Benefits 702 1,146 Other-than-temporary Impairment 243 377 Accrued Expenses 645 956 Business Combination Fair Value Adjustments 1,041 2,838 Pension and Postretirement Plans 100 67 Non-Accrual Loan Interest Income 152 158 Net Operating Loss Carryforward — 196 Unused Tax Credits — 86 Other 302 472 Total Deferred Tax Assets 7,495 15,021 Deferred Tax Liabilities: Depreciation (1,309 ) (1,612 ) Leasing Activities, Net (7,343 ) (9,845 ) FHLB Stock Dividends (196 ) (304 ) Prepaid Expenses (368 ) (461 ) Intangibles (597 ) (1,113 ) Deferred Loan Fees (483 ) (691 ) Mortgage Servicing Rights (133 ) (231 ) General Business Tax Credits — (235 ) Other (1,098 ) (1,692 ) Total Deferred Tax Liabilities (11,527 ) (16,184 ) Valuation Allowance — — Net Deferred Tax Liability $ (4,032 ) $ (1,163 )

Per Share Data (Tables)

Per Share Data (Tables)	12 Months Ended
	Dec. 31, 2017
Earnings Per Share [Abstract]
Schedule of Computations of Basic Earnings Per Share and Diluted Earnings Per Share	The computation of Basic Earnings per Share and Diluted Earnings per Share are provided below: 2017 2016 2015 Basic Earnings per Share: (1) Net Income $ 40,676 $ 35,184 $ 30,064 Weighted Average Shares Outstanding 22,924,726 22,389,137 19,882,503 Basic Earnings per Share $ 1.77 $ 1.57 $ 1.51 Diluted Earnings per Share: (1) Net Income $ 40,676 $ 35,184 $ 30,064 Weighted Average Shares Outstanding 22,924,726 22,389,137 19,882,503 Stock Options, Net — 1,979 5,871 Diluted Weighted Average Shares Outstanding 22,924,726 22,391,116 19,888,374 Diluted Earnings per Share $ 1.77 $ 1.57 $ 1.51

Operating Lease Commitments (Ta

Operating Lease Commitments (Tables)	12 Months Ended
	Dec. 31, 2017
Leases [Abstract]
Schedule of Future Minimum Lease Payments for Premises and Equipment	The following is a schedule of future minimum lease payments under operating leases for premises and equipment at year end 2017: 2018 $ 1,050 2019 956 2020 843 2021 752 2022 638 Thereafter 2,980 Total $ 7,219

Commitments and Off-balance S42

Commitments and Off-balance Sheet Items (Tables)	12 Months Ended
	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of Commitments and Contingent Liabilities	Commitments and contingent liabilities are summarized as follows, at December 31: 2017 2016 Fixed Rate Variable Rate Fixed Variable Commitments to Fund Loans: Consumer Lines $ 10,997 $ 260,934 $ 10,081 $ 237,087 Commercial Operating Lines 19,267 308,381 24,598 274,619 Residential Mortgages 17,255 655 13,760 765 Total Commitments to Fund Loans $ 47,519 $ 569,970 $ 48,439 $ 512,471 Commitments to Sell Loans: Mandatory $ 681 $ — $ 973 $ — Non-mandatory $ 24,628 $ 188 $ 30,708 $ 677 Standby Letters of Credit $ 959 $ 4,736 $ 1,059 $ 7,869

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2017
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis, including financial assets and liabilities for which the Company has elected the fair value option, are summarized below: Fair Value Measurements at December 31, 2017 Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Obligations of State and Political Subdivisions $ — $ 267,660 $ 5,649 $ 273,309 MBS/CMO - Residential — 467,332 — 467,332 Equity Securities — — 353 353 Total Securities $ — $ 734,992 $ 6,002 $ 740,994 Loans Held-for-Sale $ — $ 6,719 $ — $ 6,719 Derivative Assets $ — $ 1,564 $ — $ 1,564 Mortgage Servicing Rights $ — $ 547 $ — $ 547 Derivative Liabilities $ — $ 1,633 $ — $ 1,633 Fair Value Measurements at December 31, 2016 Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Obligations of State and Political Subdivisions $ — $ 240,495 $ 7,024 $ 247,519 MBS/CMO - Residential — 461,914 — 461,914 Equity Securities — — 353 353 Total Securities $ — $ 702,409 $ 7,377 $ 709,786 Loans Held-for-Sale $ — $ 15,273 $ — $ 15,273 Derivative Assets $ — $ 1,291 $ — $ 1,291 Mortgage Servicing Rights $ — $ 611 $ — $ 611 Derivative Liabilities $ — $ 1,238 $ — $ 1,238
Schedule of Reconciliation of all Assets Measured at Fair Value on Recurring Basis, Using Significant Unobservable Inputs (Level 3)	The table below presents a reconciliation of all assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31, 2017 and 2016: Obligations of State and Political Subdivisions Equity Securities 2017 2016 2017 2016 Balance of Recurring Level 3 Assets at January 1 $ 7,024 $ 8,749 $ 353 $ 353 Total Gains or Losses Included in Other Comprehensive Income (60 ) (75 ) — — Maturities / Calls (1,315 ) (1,650 ) — — Purchases — — — — Balance of Recurring Level 3 Assets at December 31 $ 5,649 $ 7,024 $ 353 $ 353
Schedule of Assets and Liabilities Measured at Fair Value on Non-Recurring Basis	Assets and liabilities measured at fair value on a non-recurring basis are summarized below: Fair Value Measurements at December 31, 2017 Using Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total Assets: Impaired Loans Commercial and Industrial Loans $ — $ — $ 3,354 $ 3,354 Commercial Real Estate Loans — — 3,438 3,438 Fair Value Measurements at December 31, 2016 Using Quoted Prices in Active Markets for Identical Assets Significant Other Observable Inputs Significant Unobservable Inputs Total Assets: Impaired Loans Commercial and Industrial Loans $ — $ — $ 60 $ 60 Commercial Real Estate Loans — — 348 348
Schedule of Fair Value Assets and Liabilities Measured on Nonrecurring Basis Validation Techniques	The following table presents quantitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at December 31, 2017 and 2016: December 31, 2017 Fair Value Valuation Technique(s) Unobservable Input(s) Range (Weighted Average) Impaired Loans - Commercial and Industrial Loans $ 3,354 Sales comparison approach Adjustment for physical condition of comparable properties sold 0% - 95% Impaired Loans - Commercial Real Estate Loans $ 3,438 Sales comparison approach Adjustment for physical condition of comparable properties sold 30% - 76% December 31, 2016 Fair Value Valuation Technique(s) Unobservable Input(s) Range (Weighted Average) Impaired Loans - Commercial and Industrial Loans $ 60 Sales comparison approach Adjustment for physical condition of comparable properties sold 0% - 100% Impaired Loans - Commercial Real Estate Loans $ 348 Sales comparison approach Adjustment for physical condition of comparable properties sold 33% - 77%
Schedule of Carrying Amounts and Estimated Fair Values of Company's Financial Instruments	The carrying amounts and estimated fair values of the Company’s financial instruments not previously presented are provided in the tables below for the periods ending December 31, 2017 and 2016. Not all of the Company’s assets and liabilities are considered financial instruments, and therefore are not included in the table. Because no active market exists for a significant portion of the Company’s financial instruments, fair value estimates were based on subjective judgments, and therefore cannot be determined with precision. Fair Value Measurements at December 31, 2017 Using Carrying Value Level 1 Level 2 Level 3 Total Financial Assets: Cash and Short-term Investments $ 70,359 $ 58,233 $ 12,126 $ — $ 70,359 Loans, Net 2,119,152 — — 2,120,154 2,120,154 FHLB Stock and Other Restricted Stock 13,048 N/A N/A N/A N/A Accrued Interest Receivable 13,258 — 3,574 9,684 13,258 Financial Liabilities: Demand, Savings, and Money Market Deposits (2,096,167 ) (2,096,167 ) — — (2,096,167 ) Time Deposits (387,885 ) — (388,640 ) — (388,640 ) Short-term Borrowings (133,499 ) — (133,499 ) — (133,499 ) Long-term Debt (141,717 ) — (129,366 ) (11,052 ) (140,418 ) Accrued Interest Payable (1,058 ) — (1,042 ) (16 ) (1,058 ) Fair Value Measurements at December 31, 2016 Using Carrying Value Level 1 Level 2 Level 3 Total Financial Assets: Cash and Short-term Investments $ 64,816 $ 48,467 $ 16,349 $ — $ 64,816 Loans, Net 1,974,074 — — 1,980,523 1,980,523 FHLB Stock and Other Restricted Stock 13,048 N/A N/A N/A N/A Accrued Interest Receivable 11,413 — 3,289 8,124 11,413 Financial Liabilities: Demand, Savings, and Money Market Deposits (1,971,370 ) (1,971,370 ) — — (1,971,370 ) Time Deposits (378,181 ) — (378,000 ) — (378,000 ) Short-term Borrowings (137,554 ) — (137,554 ) — (137,554 ) Long-term Debt (120,560 ) — (109,709 ) (10,793 ) (120,502 ) Accrued Interest Payable (789 ) — (775 ) (14 ) (789 )

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2017
Segment Reporting [Abstract]
Schedule of Segment Financial Information	The following segment financial information has been derived from the internal financial statements of the Company which are used by management to monitor and manage financial performance. The accounting policies of the three segments are the same as those of the Company. The evaluation process for segments does not include holding company income and expense. Holding company amounts are the primary differences between segment amounts and consolidated totals, and are reflected in the column labeled “Other” below, along with amounts to eliminate transactions between segments. Core Banking Trust and Investment Advisory Services Insurance Other Consolidated Totals Year Ended December 31, 2017 Net Interest Income $ 100,659 $ 6 $ 9 $ (765 ) $ 99,909 Net Gains on Sales of Loans 3,280 — — — 3,280 Net Gains on Securities 593 — — 3 596 Trust and Investment Product Fees 3 5,272 — (3 ) 5,272 Insurance Revenues 28 34 7,917 — 7,979 Noncash Items: Provision for Loan Losses 1,750 — — — 1,750 Depreciation and Amortization 4,351 4 76 256 4,687 Income Tax Expense (Benefit) 12,262 145 512 (1,385 ) 11,534 Segment Profit (Loss) 39,520 217 918 21 40,676 Segment Assets at December 31, 2017 3,142,096 1,987 10,078 (9,801 ) 3,144,360 Core Banking Trust and Investment Advisory Services Insurance Other Consolidated Totals Year Ended December 31, 2016 Net Interest Income $ 95,562 $ 1 $ 7 $ (666 ) $ 94,904 Net Gains on Sales of Loans 3,359 — — — 3,359 Net Gains on Securities 1,979 — — — 1,979 Trust and Investment Product Fees (3 ) 4,662 — (15 ) 4,644 Insurance Revenues 23 29 7,689 — 7,741 Noncash Items: Provision for Loan Losses 1,200 — — — 1,200 Depreciation and Amortization 4,002 3 72 238 4,315 Income Tax Expense (Benefit) 14,306 168 741 (1,269 ) 13,946 Segment Profit (Loss) 35,070 227 1,147 (1,260 ) 35,184 Segment Assets at December 31, 2016 2,958,585 1,851 8,494 (12,936 ) 2,955,994 Core Banking Trust and Investment Advisory Services Insurance Other Consolidated Totals Year Ended December 31, 2015 Net Interest Income $ 75,939 $ 8 $ 6 $ (401 ) $ 75,552 Net Gains on Sales of Loans 2,959 — — — 2,959 Net Gains on Securities 698 — — 27 725 Trust and Investment Product Fees 3 3,957 — (3 ) 3,957 Insurance Revenues 24 33 7,432 — 7,489 Noncash Items: Provision for Loan Losses — — — — — Depreciation and Amortization 3,994 13 107 150 4,264 Income Tax Expense (Benefit) 11,836 (24 ) 663 (869 ) 11,606 Segment Profit (Loss) 29,461 (70 ) 1,003 (330 ) 30,064 Segment Assets at December 31, 2015 2,367,296 1,338 7,022 (1,955 ) 2,373,701

Parent Company Financial Stat45

Parent Company Financial Statements (Tables)	12 Months Ended
	Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Balance Sheets	The condensed financial statements of German American Bancorp, Inc. are presented below: CONDENSED BALANCE SHEETS December 31, 2017 2016 ASSETS Cash $ 24,777 $ 10,217 Securities Available-for-Sale, at Fair Value 353 353 Investment in Subsidiary Bank 342,054 322,138 Investment in Non-banking Subsidiaries 5,050 4,673 Other Assets 8,906 9,577 Total Assets $ 381,140 $ 346,958 LIABILITIES Borrowings $ 11,231 $ 10,975 Other Liabilities 5,338 5,716 Total Liabilities 16,569 16,691 SHAREHOLDERS’ EQUITY Common Stock 22,934 15,261 Additional Paid-in Capital 165,288 171,744 Retained Earnings 178,969 149,666 Accumulated Other Comprehensive Income (Loss) (2,620 ) (6,404 ) Total Shareholders’ Equity 364,571 330,267 Total Liabilities and Shareholders’ Equity $ 381,140 $ 346,958
Condensed Statements of Income and Comprehensive Income	The condensed financial statements of German American Bancorp, Inc. are presented below: CONDENSED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME Years Ended December 31, 2017 2016 2015 INCOME Dividends from Subsidiaries Bank $ 25,000 $ 15,000 $ 15,900 Non-bank 975 1,000 1,504 Interest Income 34 20 30 Other Income (Loss) 25 (27 ) 21 Total Income 26,034 15,993 17,455 EXPENSES Salaries and Employee Benefits 533 1,006 500 Professional Fees 602 1,096 739 Occupancy and Equipment Expense 7 13 8 Interest Expense 877 742 491 Other Expenses 794 750 657 Total Expenses 2,813 3,607 2,395 INCOME BEFORE INCOME TAXES AND EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES 23,221 12,386 15,060 Income Tax Benefit 1,415 1,284 893 INCOME BEFORE EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES 24,636 13,670 15,953 Equity in Undistributed Income of Subsidiaries 16,040 21,514 14,111 NET INCOME 40,676 35,184 30,064 Other Comprehensive Income: Changes in Unrealized Gain (Loss) on Securities, Available-for-Sale 4,391 (10,202 ) 932 Changes in Unrecognized (Loss) in Postretirement Benefit Obligation, Net (138 ) (14 ) (10 ) TOTAL COMPREHENSIVE INCOME $ 44,929 $ 24,968 $ 30,986
Condensed Statements of Cash Flows	The condensed financial statements of German American Bancorp, Inc. are presented below: CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, 2017 2016 2015 CASH FLOWS FROM OPERATING ACTIVITIES Net Income $ 40,676 $ 35,184 $ 30,064 Adjustments to Reconcile Net Income to Net Cash from Operations Change in Other Assets 431 2,085 (5,331 ) Change in Other Liabilities (122 ) 310 1,226 Equity Based Compensation 1,246 1,407 963 Excess Tax Benefit from Restricted Share Grant 240 200 89 Equity in Excess Undistributed Income of Subsidiaries (16,040 ) (21,514 ) (14,111 ) Net Cash from Operating Activities 26,431 17,672 12,900 CASH FLOWS FROM INVESTING ACTIVITIES Cash Used for Business Acquisitions — (15,992 ) — Net Cash from Investing Activities — (15,992 ) — CASH FLOWS FROM FINANCING ACTIVITIES Repayment of Long-term Debt — — (4,000 ) Issuance (Retirement) of Common Stock (29 ) 55 49 Employee Stock Purchase Plan — — 447 Dividends Paid (11,842 ) (10,630 ) (9,010 ) Net Cash from Financing Activities (11,871 ) (10,575 ) (12,514 ) Net Change in Cash and Cash Equivalents 14,560 (8,895 ) 386 Cash and Cash Equivalents at Beginning of Year 10,217 19,112 18,726 Cash and Cash Equivalents at End of Year $ 24,777 $ 10,217 $ 19,112

Business Combinations, Goodwi46

Business Combinations, Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2017
Business Combinations, Goodwill and Intangible Assets [Abstract]
Schedule of Total Consideration Transferred and Fair Value of Identifiable Assets Acquired and Liabilities Assumed	The following table summarizes the fair value of the total consideration transferred as a part of the River Valley acquisition as well as the fair value of identifiable assets acquired and liabilities assumed as of the effective date of the transaction. Consideration Cash for Options and Fractional Shares $ 395 Cash Consideration 24,975 Equity Instruments 62,022 Fair Value of Total Consideration Transferred $ 87,392 Recognized Amounts of Identifiable Assets Acquired and Liabilities Assumed: Cash $ 17,877 Federal Funds Sold and Other Short-term Investments 6,477 Interest-bearing Time Deposits with Banks 992 Securities 132,396 Loans 317,760 Stock in FHLB of Indianapolis and Other Restricted Stock, at Cost 3,127 Premises, Furniture & Equipment 9,650 Other Real Estate 882 Intangible Assets 2,613 Company Owned Life Insurance 12,842 Accrued Interest Receivable and Other Assets 9,139 Deposits - Non-interest Bearing (9,584 ) Deposits - Interest Bearing (395,862 ) FHLB Advances and Other Borrowings (49,910 ) Accrued Interest Payable and Other Liabilities (4,529 ) Total Identifiable Net Assets $ 53,870 Goodwill $ 33,522
Schedule of Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill for the periods ended December 31, 2017, 2016, and 2015, were classified as follows: 2017 2016 2015 Beginning of Year $ 54,058 $ 20,536 $ 20,536 Acquired Goodwill — 33,522 — Impairment — — — End of Year $ 54,058 $ 54,058 $ 20,536
Schedule of Acquired Intangible Assets	Acquired Intangible Assets Acquired intangible assets were as follows as of year end: 2017 Gross Amount Accumulated Amortization Core Banking Core Deposit Intangible $ 11,617 $ (9,694 ) Branch Acquisition Intangible 257 (257 ) Insurance Customer List 5,408 (5,229 ) Total $ 17,282 $ (15,180 ) Acquired intangible assets were as follows as of year end: 2016 Gross Amount Accumulated Amortization Core Banking Core Deposit Intangible $ 11,617 $ (8,782 ) Branch Acquisition Intangible 257 (257 ) Insurance Customer List 5,199 (5,199 ) Total $ 17,073 $ (14,238 )
Schedule of Estimated Amortization Expense	Estimated amortization expense for each of the next five years is as follows: 2018 $ 753 2019 564 2020 383 2021 229 2022 114

Other Comprehensive Income (L47

Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2017
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The tables below summarize the changes in accumulated other comprehensive income (loss) by component for the years ended December 31, 2017 and 2016, net of tax: December 31, 2017 Unrealized Gains and Losses on Available-for-Sale Securities Postretirement Benefit Items Total Beginning Balance $ (6,312 ) $ (92 ) $ (6,404 ) Other Comprehensive Income (Loss) Before Reclassification 4,778 (143 ) 4,635 Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (387 ) 5 (382 ) Net Current Period Other Comprehensive Income (Loss) 4,391 (138 ) 4,253 ASU 2018-02 Adoption (414 ) (55 ) (469 ) Ending Balance $ (2,335 ) $ (285 ) $ (2,620 ) December 31, 2016 Unrealized Gains and Losses on Available-for-Sale Securities Postretirement Benefit Items Total Beginning Balance $ 3,890 $ (78 ) $ 3,812 Other Comprehensive Income (Loss) Before Reclassification (8,916 ) (18 ) (8,934 ) Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) (1,286 ) 4 (1,282 ) Net Current Period Other Comprehensive Income (Loss) (10,202 ) (14 ) (10,216 ) Ending Balance $ (6,312 ) $ (92 ) $ (6,404 )
Schedule of Classifications Out of Accumulated Other Comprehensive Income (Loss) by Component	The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2017: Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified From Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement Where Net Income is Presented Unrealized Gains and Losses on Available-for-Sale Securities $ 596 Net Gain (Loss) on Securities (209 ) Income Tax Expense 387 Net of Tax Amortization of Post Retirement Plan Items Actuarial Gains (Losses) $ (8 ) Salaries and Employee Benefits 3 Income Tax Expense (5 ) Net of Tax Total Reclassifications for the Period $ 382 The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2016: Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified From Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement Where Net Income is Presented Unrealized Gains and Losses on Available-for-Sale Securities $ 1,979 Net Gain (Loss) on Securities (693 ) Income Tax Expense 1,286 Net of Tax Amortization of Post Retirement Plan Items Actuarial Gains (Losses) $ (6 ) Salaries and Employee Benefits 2 Income Tax Expense (4 ) Net of Tax Total Reclassifications for the Period $ 1,282 The table below summarizes the classifications out of accumulated other comprehensive income (loss) by component for the year ended December 31, 2015: Details about Accumulated Other Comprehensive Income (Loss) Components Amount Reclassified From Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Statement Where Net Income is Presented Unrealized Gains and Losses on Available-for-Sale Securities $ 725 Net Gain (Loss) on Securities (254 ) Income Tax Expense 471 Net of Tax Amortization of Post Retirement Plan Items Actuarial Gains (Losses) $ (5 ) Salaries and Employee Benefits 2 Income Tax Expense (3 ) Net of Tax Total Reclassifications for the Period $ 468

Quarterly Financial Data (Una48

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Financial Data (Unaudited)	The following table represents selected quarterly financial data for the Company: Interest Income Net Interest Income Net Income Basic Earnings per Share Diluted Earnings per Share 2017 First Quarter $ 27,033 $ 24,725 $ 9,556 $ 0.42 $ 0.42 Second Quarter 27,401 24,813 9,839 0.43 0.43 Third Quarter 27,986 24,917 9,660 0.42 0.42 Fourth Quarter 28,610 25,454 11,621 0.51 0.51 2016 First Quarter $ 22,680 $ 20,784 $ 5,146 $ 0.25 $ 0.25 Second Quarter 26,850 24,671 9,788 0.43 0.43 Third Quarter 26,734 24,560 10,185 0.45 0.45 Fourth Quarter 27,101 24,889 10,065 0.44 0.44

Summary of Significant Accoun49

Summary of Significant Accounting Policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)segmentquarter	Dec. 31, 2019USD ($)	Dec. 31, 2016USD ($)	Feb. 29, 2016USD ($)	Dec. 31, 2015USD ($)
Property, Plant and Equipment [Line Items]
Number of segments | segment	3
Periods used to calculate general component for allowance for loan losses (in quarters) | quarter	20
Required cash on deposit at Federal Reserve	$ 10,967		$ 11,659
Assets	3,144,360		2,955,994		$ 2,373,701
Liabilities and Equity	3,144,360		2,955,994
ASU 2016-02 | Scenario, Forecast
Property, Plant and Equipment [Line Items]
Assets		$ 6,000
Liabilities and Equity		$ 6,000
River Valley Bancorp
Property, Plant and Equipment [Line Items]
Fair value of mortgage servicing rights	$ 547		$ 611
Assets				$ 516,300
Minimum
Property, Plant and Equipment [Line Items]
Finite-lived intangible asset, useful life	6 years
Maximum
Property, Plant and Equipment [Line Items]
Finite-lived intangible asset, useful life	10 years
Buildings and related components | Minimum
Property, Plant and Equipment [Line Items]
Premises, furniture, and equipment, useful life	10 years
Buildings and related components | Maximum
Property, Plant and Equipment [Line Items]
Premises, furniture, and equipment, useful life	40 years
Furniture, fixtures and equipment | Minimum
Property, Plant and Equipment [Line Items]
Premises, furniture, and equipment, useful life	3 years
Furniture, fixtures and equipment | Maximum
Property, Plant and Equipment [Line Items]
Premises, furniture, and equipment, useful life	10 years

Securities (Schedule of Securit

Securities (Schedule of Securities Available-for-Sale) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 743,995	$ 719,555
Gross Unrealized Gains	7,149	4,327
Gross Unrealized Losses	(10,150)	(14,096)
Fair Value	740,994	709,786
Obligations of State and Political Subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	267,437	247,350
Gross Unrealized Gains	6,733	3,847
Gross Unrealized Losses	(861)	(3,678)
Fair Value	273,309	247,519
MBS/CMO – Residential
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	476,205	471,852
Gross Unrealized Gains	416	480
Gross Unrealized Losses	(9,289)	(10,418)
Fair Value	467,332	461,914
Equity Securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	353	353
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$ 353	$ 353

Securities (Schedule of Secur51

Securities (Schedule of Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Securities Available-for-Sale: Amortized cost
Due in one year or less	$ 2,706
Due after one year through five years	23,789
Due after five years through ten years	78,661
Due after ten years	162,281
Total Amortized Cost	743,995	$ 719,555
Securities Available-for-Sale: Fair Value
Due in one year or less	2,739
Due after one year through five years	24,531
Due after five years through ten years	81,215
Due after ten years	164,824
Fair Value	740,994	709,786
MBS/CMO – Residential
Securities Available-for-Sale: Amortized cost
Available-for-Sale, amortized cost	476,205
Total Amortized Cost	476,205	471,852
Securities Available-for-Sale: Fair Value
Available-for-Sale, Fair Value	467,332
Fair Value	467,332	461,914
Equity Securities
Securities Available-for-Sale: Amortized cost
Available-for-Sale, amortized cost	353
Total Amortized Cost	353	353
Securities Available-for-Sale: Fair Value
Available-for-Sale, Fair Value	353
Fair Value	$ 353	$ 353

Securities (Schedule of Proceed

Securities (Schedule of Proceeds from the Sales of Securities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Available-for-Sale
Proceeds from Sales	$ 49,459	$ 165,102	$ 18,999
Gross Gains on Sales	596	1,979	725
Income Taxes on Gross Gains	209	693	$ 254
Carrying amount of securities pledged	$ 165,404	$ 186,572

Securities (Schedule of Secur53

Securities (Schedule of Securities with Unrealized Losses) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2009USD ($)	Dec. 31, 2017USD ($)investment	Dec. 31, 2016USD ($)investment
Less than 12 Months
Fair Value		$ 205,584	$ 464,958
Unrealized Loss		(2,285)	(12,460)
12 Months or More
Fair Value		274,681	47,271
Unrealized Loss		(7,865)	(1,636)
Total
Fair Value		480,265	512,229
Unrealized Loss		(10,150)	$ (14,096)
Number of equity securities held in non-controlling investment banking | investment			1
Original investment of equity security	$ 1,350
Obligations of State and Political Subdivisions
Less than 12 Months
Fair Value		33,230	$ 108,918
Unrealized Loss		(237)	(3,678)
12 Months or More
Fair Value		24,161	0
Unrealized Loss		(624)	0
Total
Fair Value		57,391	108,918
Unrealized Loss		(861)	(3,678)
MBS/CMO – Residential
Less than 12 Months
Fair Value		172,354	356,040
Unrealized Loss		(2,048)	(8,782)
12 Months or More
Fair Value		250,520	47,271
Unrealized Loss		(7,241)	(1,636)
Total
Fair Value		422,874	403,311
Unrealized Loss		(9,289)	(10,418)
Equity Securities
Less than 12 Months
Fair Value		0	0
Unrealized Loss		0	0
12 Months or More
Fair Value		0	0
Unrealized Loss		0	0
Total
Fair Value		0	0
Unrealized Loss		$ 0	$ 0
Number of equity securities held in non-controlling investment banking | investment		1
Other than temporary impairment losses in available for sale securities recognized	$ 997

Derivatives (Derivative Instrum

Derivatives (Derivative Instruments and Hedging Activities) (Details) - Interest Rate Swaps - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Included in Other Assets:
Interest Rate Swaps, Notional Amount	$ 87,800	$ 67,900
Other Assets
Included in Other Assets:
Interest Rate Swaps, Notional Amount	87,788	67,902
Interest Rate Swaps, Fair Value	1,564	1,291
Other Liabilities
Included in Other Liabilities:
Interest Rate Swaps, Notional Amount	87,788	67,902
Interest Rate Swaps, Fair Value	$ 1,633	$ 1,238

Derivatives (Derivative Instr55

Derivatives (Derivative Instruments Consolidated Statement) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest Rate Swaps | Other Income
Derivative [Line Items]
Included in Other Income	$ 478	$ 1,207	$ 491

Loans (Classifications of Loans

Loans (Classifications of Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 2,145,019	$ 1,993,404
Less: Unearned Income	(3,381)	(3,449)
Allowance for Loan Losses	(15,694)	(14,808)	$ (14,438)	$ (14,929)
Loans, Net	2,125,944	1,975,147
Commercial and Industrial Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses	(4,735)	(3,725)	(4,242)	(4,627)
Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses	(4,591)	(5,452)	(6,342)	(7,273)
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses	(4,894)	(4,094)	(2,115)	(1,123)
Home Equity Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses	(330)	(283)	(383)	(246)
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses	(298)	(235)	(230)	(354)
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses	(343)	(329)	$ (414)	$ (622)
Commercial | Commercial and Industrial Loans and Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	486,668	457,372
Commercial | Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	926,729	856,094
Commercial | Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	333,227	303,128
Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	2,145,019	1,993,404
Retail | Home Equity Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	152,187	133,575
Retail | Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	67,475	59,945
Retail | Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 178,733	$ 183,290

Loans (Narrative) (Details)

Loans (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017USD ($)loan	Dec. 31, 2016USD ($)loan	Dec. 31, 2015USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans modified as debt restructurings | loan	3	0	0
Troubled debt restructuring, additional lending amount	$ 0	$ 0
Number of loans that subsequently default after modification | loan	0	0	0
Mortgage loans in process of foreclosure	$ 14,000	$ 202,000
Loans Acquired with Deteriorated Credit Quality
Accounts, Notes, Loans and Financing Receivable [Line Items]
Increase in allowance for loans that subsequently default after modification	11,000	107,000	$ 0
Loans Purchased
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses, reversal	$ 110,000	$ 2,000	$ 54,000

Loans (Schedule of Allowance fo

Loans (Schedule of Allowance for Loan Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 14,808	$ 14,438	$ 14,929
Provision for Loan Losses	1,750	1,200	0
Recoveries	414	270	473
Loans Charged-off	(1,278)	(1,100)	(964)
Ending Balance	15,694	14,808	14,438
Commercial and Industrial Loans and Leases
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	3,725	4,242	4,627
Provision for Loan Losses	1,147	(483)	(451)
Recoveries	14	32	102
Loans Charged-off	(151)	(66)	(36)
Ending Balance	4,735	3,725	4,242
Commercial Real Estate Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	5,452	6,342	7,273
Provision for Loan Losses	(689)	(846)	(688)
Recoveries	48	10	107
Loans Charged-off	(220)	(54)	(350)
Ending Balance	4,591	5,452	6,342
Agricultural Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	4,094	2,115	1,123
Provision for Loan Losses	840	2,000	992
Recoveries	9	1	0
Loans Charged-off	(49)	(22)	0
Ending Balance	4,894	4,094	2,115
Home Equity Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	283	383	246
Provision for Loan Losses	78	33	160
Recoveries	8	3	10
Loans Charged-off	(39)	(136)	(33)
Ending Balance	330	283	383
Consumer Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	235	230	354
Provision for Loan Losses	517	273	(48)
Recoveries	272	208	236
Loans Charged-off	(726)	(476)	(312)
Ending Balance	298	235	230
Residential Mortgage Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	329	414	622
Provision for Loan Losses	44	245	7
Recoveries	63	16	18
Loans Charged-off	(93)	(346)	(233)
Ending Balance	343	329	414
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	690	712	684
Provision for Loan Losses	(187)	(22)	28
Recoveries	0	0	0
Loans Charged-off	0	0	0
Ending Balance	$ 503	$ 690	$ 712

Loans (Schedule of Allowance 59

Loans (Schedule of Allowance for Loan Losses and Recorded Investment in Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Ending Allowance Balance Attributable to Loans:
Individually Evaluated for Impairment	$ 2,228		$ 255
Collectively Evaluated for Impairment	13,455		14,448
Total Ending Allowance Balance	15,694		14,808		$ 14,438	$ 14,929
Loans:
Loans Individually Evaluated for Impairment	11,633		1,239
Loans Collectively Evaluated for Impairment	2,133,752		1,989,128
Loans, net of deferred income	2,154,502	[1]	2,001,415	[2]
Accrued interest receivable included in total recorded investment in loans and leases	9,483		8,011
Loans Acquired with Deteriorated Credit Quality
Ending Allowance Balance Attributable to Loans:
Acquired with Deteriorated Credit Quality	11		105
Loans:
Loans, net of deferred income	9,117		11,048		7,555
Commercial and Industrial Loans and Leases
Ending Allowance Balance Attributable to Loans:
Individually Evaluated for Impairment	1,399		24
Collectively Evaluated for Impairment	3,333		3,698
Total Ending Allowance Balance	4,735		3,725		4,242	4,627
Loans:
Loans Individually Evaluated for Impairment	5,918		113
Loans Collectively Evaluated for Impairment	481,152		456,769
Loans, net of deferred income	488,058	[1]	458,538	[2]
Commercial and Industrial Loans and Leases | Loans Acquired with Deteriorated Credit Quality
Ending Allowance Balance Attributable to Loans:
Acquired with Deteriorated Credit Quality	3		3
Loans:
Loans, net of deferred income	988		1,656		1,325
Commercial Real Estate Loans
Ending Allowance Balance Attributable to Loans:
Individually Evaluated for Impairment	829		231
Collectively Evaluated for Impairment	3,759		5,172
Total Ending Allowance Balance	4,591		5,452		6,342	7,273
Loans:
Loans Individually Evaluated for Impairment	5,552		832
Loans Collectively Evaluated for Impairment	917,036		849,510
Loans, net of deferred income	929,040	[1]	858,030	[2]
Commercial Real Estate Loans | Loans Acquired with Deteriorated Credit Quality
Ending Allowance Balance Attributable to Loans:
Acquired with Deteriorated Credit Quality	3		49
Loans:
Loans, net of deferred income	6,452		7,688		5,363
Agricultural Loans
Ending Allowance Balance Attributable to Loans:
Individually Evaluated for Impairment	0		0
Collectively Evaluated for Impairment	4,894		4,046
Total Ending Allowance Balance	4,894		4,094		2,115	1,123
Loans:
Loans Individually Evaluated for Impairment	163		294
Loans Collectively Evaluated for Impairment	336,849		305,946
Loans, net of deferred income	337,801	[1]	306,946	[2]
Agricultural Loans | Loans Acquired with Deteriorated Credit Quality
Ending Allowance Balance Attributable to Loans:
Acquired with Deteriorated Credit Quality	0		48
Loans:
Loans, net of deferred income	789		706		0
Home Equity Loans
Ending Allowance Balance Attributable to Loans:
Individually Evaluated for Impairment	0		0
Collectively Evaluated for Impairment	330		283
Total Ending Allowance Balance	330		283		383	246
Loans:
Loans Individually Evaluated for Impairment	0		0
Loans Collectively Evaluated for Impairment	152,757		134,032
Loans, net of deferred income	152,757	[1]	134,032	[2]
Home Equity Loans | Loans Acquired with Deteriorated Credit Quality
Ending Allowance Balance Attributable to Loans:
Acquired with Deteriorated Credit Quality	0		0
Loans:
Loans, net of deferred income	0		0
Consumer Loans
Ending Allowance Balance Attributable to Loans:
Individually Evaluated for Impairment	0		0
Collectively Evaluated for Impairment	298		230
Total Ending Allowance Balance	298		235		230	354
Loans:
Loans Individually Evaluated for Impairment	0		0
Loans Collectively Evaluated for Impairment	67,647		60,046
Loans, net of deferred income	67,647	[1]	60,099	[2]
Consumer Loans | Loans Acquired with Deteriorated Credit Quality
Ending Allowance Balance Attributable to Loans:
Acquired with Deteriorated Credit Quality	0		5
Loans:
Loans, net of deferred income	0		53		0
Residential Mortgage Loans
Ending Allowance Balance Attributable to Loans:
Individually Evaluated for Impairment	0		0
Collectively Evaluated for Impairment	338		329
Total Ending Allowance Balance	343		329		414	622
Loans:
Loans Individually Evaluated for Impairment	0		0
Loans Collectively Evaluated for Impairment	178,311		182,825
Loans, net of deferred income	179,199	[1]	183,770	[2]
Residential Mortgage Loans | Loans Acquired with Deteriorated Credit Quality
Ending Allowance Balance Attributable to Loans:
Acquired with Deteriorated Credit Quality	5		0
Loans:
Loans, net of deferred income	888		945		867
Unallocated
Ending Allowance Balance Attributable to Loans:
Individually Evaluated for Impairment	0		0
Collectively Evaluated for Impairment	503		690
Total Ending Allowance Balance	503		690		$ 712	$ 684
Unallocated | Loans Acquired with Deteriorated Credit Quality
Ending Allowance Balance Attributable to Loans:
Acquired with Deteriorated Credit Quality	$ 0		$ 0
[1]	Total recorded investment in loans includes $9,483 in accrued interest.
[2]	Total recorded investment in loans includes $8,011 in accrued interest.

Loans (Schedule of Loans Indivi

Loans (Schedule of Loans Individually Evaluated for Impairment) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
With No Related Allowance Recorded:
Unpaid Principal Balance	[1]	$ 3,936	$ 1,719
Recorded Investment		3,410	1,107
Average Recorded Investment		2,509	2,444	$ 1,738
Interest Income Recognized		108	123	134
Cash Basis Recognized		47	89	133
With An Allowance Recorded:
Unpaid Principal Balance	[1]	9,293	1,575
Recorded Investment		9,228	1,431
Allowance for Loan Losses Allocated		2,234	355
Average Recorded Investment		5,191	1,938	4,566
Interest Income Recognized		21	7	94
Cash Basis Recognized		8	3	92
Recorded Investment		12,638	2,538
Unpaid Principal Balance	[1]	13,229	3,294
Average Recorded Investment		7,700	4,382	6,304
Interest Income Recognized		129	130	228
Cash Basis Recognized		55	92	225
Loans Acquired with Deteriorated Credit Quality
With No Related Allowance Recorded:
Unpaid Principal Balance	[1]	1,255	1,018
Recorded Investment		797	531
Average Recorded Investment		792	489	196
Interest Income Recognized		25	21	0
Cash Basis Recognized		25	10	0
With An Allowance Recorded:
Unpaid Principal Balance	[1]	252	910
Recorded Investment		208	768
Allowance for Loan Losses Allocated		6	100
Average Recorded Investment		238	711	0
Interest Income Recognized		19	0	0
Cash Basis Recognized		7	0	0
Commercial and Industrial Loans and Leases
With No Related Allowance Recorded:
Unpaid Principal Balance	[1]	1,205	85
Recorded Investment		1,166	29
Average Recorded Investment		635	295	447
Interest Income Recognized		27	29	29
Cash Basis Recognized		2	15	29
With An Allowance Recorded:
Unpaid Principal Balance	[1]	4,804	148
Recorded Investment		4,763	107
Allowance for Loan Losses Allocated		1,402	27
Average Recorded Investment		1,986	102	1,726
Interest Income Recognized		4	1	89
Cash Basis Recognized		2	1	89
Commercial Real Estate Loans
With No Related Allowance Recorded:
Unpaid Principal Balance	[1]	1,812	1,278
Recorded Investment		1,495	784
Average Recorded Investment		1,184	1,688	1,282
Interest Income Recognized		57	92	104
Cash Basis Recognized		29	73	103
With An Allowance Recorded:
Unpaid Principal Balance	[1]	4,489	839
Recorded Investment		4,465	827
Allowance for Loan Losses Allocated		832	280
Average Recorded Investment		2,842	1,587	2,840
Interest Income Recognized		17	6	5
Cash Basis Recognized		6	2	3
Agricultural Loans
With No Related Allowance Recorded:
Unpaid Principal Balance	[1]	919	356
Recorded Investment		749	294
Average Recorded Investment		690	461	9
Interest Income Recognized		24	2	1
Cash Basis Recognized		16	1	1
With An Allowance Recorded:
Unpaid Principal Balance	[1]	0	588
Recorded Investment		0	497
Allowance for Loan Losses Allocated		0	48
Average Recorded Investment		363	249	0
Interest Income Recognized		0	0	0
Cash Basis Recognized		$ 0	$ 0	$ 0
[1]	Unpaid Principal Balance is the remaining contractual payments gross of partial charge-offs and discounts.

Loans (Schedule of Recorded Inv

Loans (Schedule of Recorded Investment in Nonaccrual Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-Accrual	$ 11,091	$ 3,793
Loans Past Due 90 Days or More & Still Accruing	742	2
Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-Accrual	4,753	86
Loans Past Due 90 Days or More & Still Accruing	0	2
Commercial Real Estate Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-Accrual	4,618	1,408
Loans Past Due 90 Days or More & Still Accruing	474	0
Agricultural Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-Accrual	748	792
Loans Past Due 90 Days or More & Still Accruing	268	0
Home Equity Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-Accrual	199	73
Loans Past Due 90 Days or More & Still Accruing	0	0
Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-Accrual	286	85
Loans Past Due 90 Days or More & Still Accruing	0	0
Residential Mortgage Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-Accrual	487	1,349
Loans Past Due 90 Days or More & Still Accruing	0	0
Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-Accrual	866	1,264
Loans Past Due 90 Days or More & Still Accruing	$ 0	$ 0

Loans (Schedule of Aging of Rec

Loans (Schedule of Aging of Recorded Investment in Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	$ 2,154,502	[1]	$ 2,001,415	[2]
Total Past Due	11,975	[1]	9,435	[2]
Loans Not Past Due	2,142,527	[1]	1,991,980	[2]
Accrued interest receivable included in total recorded investment in loans and leases	9,483		8,011
Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	488,058	[1]	458,538	[2]
Total Past Due	2,479		101
Loans Not Past Due	485,579		458,437
Commercial Real Estate Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	929,040	[1]	858,030	[2]
Total Past Due	3,556		1,860
Loans Not Past Due	925,484		856,170
Agricultural Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	337,801	[1]	306,946	[2]
Total Past Due	295		744
Loans Not Past Due	337,506		306,202
Home Equity Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	152,757	[1]	134,032	[2]
Total Past Due	658		796
Loans Not Past Due	152,099		133,236
Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	67,647	[1]	60,099	[2]
Total Past Due	629		407
Loans Not Past Due	67,018		59,692
Residential Mortgage Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	179,199	[1]	183,770	[2]
Total Past Due	4,358		5,527
Loans Not Past Due	174,841		178,243
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,927	[1]	5,965	[2]
30-59 Days Past Due | Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	209		20
30-59 Days Past Due | Commercial Real Estate Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,229		1,509
30-59 Days Past Due | Agricultural Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	27		84
30-59 Days Past Due | Home Equity Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	366		707
30-59 Days Past Due | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	246		175
30-59 Days Past Due | Residential Mortgage Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,850		3,470
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	4,452	[1]	1,489	[2]
60-89 Days Past Due | Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,365		4
60-89 Days Past Due | Commercial Real Estate Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,650		21
60-89 Days Past Due | Agricultural Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0		50
60-89 Days Past Due | Home Equity Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	93		16
60-89 Days Past Due | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	97		147
60-89 Days Past Due | Residential Mortgage Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,247		1,251
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,596	[1]	1,981	[2]
90 Days or More Past Due | Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	905		77
90 Days or More Past Due | Commercial Real Estate Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	677		330
90 Days or More Past Due | Agricultural Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	268		610
90 Days or More Past Due | Home Equity Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	199		73
90 Days or More Past Due | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	286		85
90 Days or More Past Due | Residential Mortgage Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	261		806
Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	9,117		11,048		$ 7,555
Total Past Due	443		757
Loans Not Past Due	8,674		10,291
Loans Acquired with Deteriorated Credit Quality | Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	988		1,656		1,325
Loans Acquired with Deteriorated Credit Quality | Commercial Real Estate Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	6,452		7,688		5,363
Loans Acquired with Deteriorated Credit Quality | Agricultural Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	789		706		0
Loans Acquired with Deteriorated Credit Quality | Home Equity Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0		0
Loans Acquired with Deteriorated Credit Quality | Consumer Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	0		53		0
Loans Acquired with Deteriorated Credit Quality | Residential Mortgage Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total	888		945		$ 867
Loans Acquired with Deteriorated Credit Quality | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	342		130
Loans Acquired with Deteriorated Credit Quality | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	74		0
Loans Acquired with Deteriorated Credit Quality | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 27		627
Loans Acquired with Deteriorated Credit Quality | River Valley Bancorp
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total			262,809
Total Past Due			4,740
Loans Not Past Due			258,069
Loans Acquired with Deteriorated Credit Quality | River Valley Bancorp | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due			2,752
Loans Acquired with Deteriorated Credit Quality | River Valley Bancorp | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due			862
Loans Acquired with Deteriorated Credit Quality | River Valley Bancorp | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due			$ 1,126
[1]	Total recorded investment in loans includes $9,483 in accrued interest.
[2]	Total recorded investment in loans includes $8,011 in accrued interest.

Loans (Schedule of Recorded I63

Loans (Schedule of Recorded Investment of Troubled Debt Restructurings) (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Modifications [Line Items]
Total		$ 282	$ 28
Commercial and Industrial Loans and Leases
Financing Receivable, Modifications [Line Items]
Total		258	28
Commercial Real Estate Loans
Financing Receivable, Modifications [Line Items]
Total		24	0
Performing
Financing Receivable, Modifications [Line Items]
Total		149	28
Performing | Commercial and Industrial Loans and Leases
Financing Receivable, Modifications [Line Items]
Total		125	28
Performing | Commercial Real Estate Loans
Financing Receivable, Modifications [Line Items]
Total		24	0
Non-Accrual
Financing Receivable, Modifications [Line Items]
Total	[1]	133	0
Non-Accrual | Commercial and Industrial Loans and Leases
Financing Receivable, Modifications [Line Items]
Total	[1]	133	0
Non-Accrual | Commercial Real Estate Loans
Financing Receivable, Modifications [Line Items]
Total	[1]	$ 0	$ 0
[1]	The non-accrual troubled debt restructurings are included in the Non-Accrual Loan table presented on a previous page.

Loans (Schedule of Loans by Cla

Loans (Schedule of Loans by Class Modified as Debt Restructuring) (Details)	12 Months Ended
	Dec. 31, 2017USD ($)loan	Dec. 31, 2016loan	Dec. 31, 2015loan
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	3	0	0
Pre-Modification Outstanding Recorded Investment	$ 505,000
Post-Modification Outstanding Recorded Investment	505,000
Increase in allowance for loan losses for troubled debt restructurings	149,000
Charge-offs due to troubled debt restructurings	$ 0
Commercial and Industrial Loans and Leases
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	2
Pre-Modification Outstanding Recorded Investment	$ 477,000
Post-Modification Outstanding Recorded Investment	$ 477,000
Commercial Real Estate Loans
Financing Receivable, Modifications [Line Items]
Number of Loans | loan	1
Pre-Modification Outstanding Recorded Investment	$ 28,000
Post-Modification Outstanding Recorded Investment	$ 28,000

Loans (Schedule of Risk Categor

Loans (Schedule of Risk Category of Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	$ 2,154,502	[1]	$ 2,001,415	[2]
Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	488,058	[1]	458,538	[2]
Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	929,040	[1]	858,030	[2]
Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	337,801	[1]	306,946	[2]
Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	9,117		11,048		$ 7,555
Loans Acquired with Deteriorated Credit Quality | Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	988		1,656		1,325
Loans Acquired with Deteriorated Credit Quality | Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	6,452		7,688		5,363
Loans Acquired with Deteriorated Credit Quality | Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	789		706		$ 0
Loans Acquired with Deteriorated Credit Quality | River Valley Bancorp
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income			262,809
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	1,660,271		1,539,361
Pass | Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	462,212		437,353
Pass | Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	894,027		814,033
Pass | Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	304,032		287,975
Pass | Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	2,604		1,897
Pass | Loans Acquired with Deteriorated Credit Quality | River Valley Bancorp
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income			175,915
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	53,226		51,673
Special Mention | Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	7,901		10,454
Special Mention | Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	18,037		26,549
Special Mention | Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	27,288		14,670
Special Mention | Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	1,647		3,121
Special Mention | Loans Acquired with Deteriorated Credit Quality | River Valley Bancorp
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income			11,638
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	41,402		32,480
Substandard | Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	17,945		10,731
Substandard | Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	16,976		17,448
Substandard | Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	6,481		4,301
Substandard | Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	3,978		5,032
Substandard | Loans Acquired with Deteriorated Credit Quality | River Valley Bancorp
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income			8,145
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	0		0
Doubtful | Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	0		0
Doubtful | Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	0		0
Doubtful | Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	0		0
Doubtful | Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	0		0
Doubtful | Loans Acquired with Deteriorated Credit Quality | River Valley Bancorp
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income			0
Total
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	1,754,899		1,623,514
Total | Commercial and Industrial Loans and Leases
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	488,058		458,538
Total | Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	929,040		858,030
Total | Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	337,801		306,946
Total | Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	$ 8,229		10,050
Total | Loans Acquired with Deteriorated Credit Quality | River Valley Bancorp
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income			$ 195,698
[1]	Total recorded investment in loans includes $9,483 in accrued interest.
[2]	Total recorded investment in loans includes $8,011 in accrued interest.

Loans (Schedule of Recorded I66

Loans (Schedule of Recorded Investment in Home Equity, Consumer and Residential Mortgage Loans) (Details) - USD ($) $ in Thousands	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	$ 2,154,502	[1]	$ 2,001,415	[2]
Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	152,757	[1]	134,032	[2]
Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	67,647	[1]	60,099	[2]
Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	179,199	[1]	183,770	[2]
Performing | Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	152,558		133,959
Performing | Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	67,361		60,014
Performing | Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	178,712		182,421
Nonperforming | Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	199		73
Nonperforming | Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	286		85
Nonperforming | Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	487		1,349
Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	9,117		11,048		$ 7,555
Loans Acquired with Deteriorated Credit Quality | Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	0		0
Loans Acquired with Deteriorated Credit Quality | Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	0		53		0
Loans Acquired with Deteriorated Credit Quality | Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Loans, net of deferred income	$ 888		$ 945		$ 867
[1]	Total recorded investment in loans includes $9,483 in accrued interest.
[2]	Total recorded investment in loans includes $8,011 in accrued interest.

Loans (Schedule of Loans Purcha

Loans (Schedule of Loans Purchased/Sold During the Period) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Purchases	$ 5,547	$ 5,383
Sales	1,106	2,029
Commercial and Industrial Loans
Financing Receivable, Recorded Investment [Line Items]
Purchases	800	0
Sales	0	0
Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Purchases	4,747	5,383
Sales	$ 1,106	$ 2,029

Loans (Schedule of Contractuall

Loans (Schedule of Contractually Required Payments on Acquired Loans) (Details) - Loans Acquired with Deteriorated Credit Quality - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	$ 0	$ 14,094
Cash Flows Expected to be Collected at Acquisition	0	11,051
Fair Value of Acquired Loans at Acquisition	0	8,807
Commercial and Industrial Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	0	220
Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	0	10,612
Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	0	896
Home Equity Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	0	0
Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	0	87
Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Contractually required payments on loans acquired with evidence of deteriorated credit quality	$ 0	$ 2,279

Loans (Schedule of Carrying Amo

Loans (Schedule of Carrying Amount of Loans with Deterioration of Credit Quality) (Details) - USD ($) $ in Thousands	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Total	$ 2,154,502	[1]	$ 2,001,415	[2]
Commercial and Industrial Loans
Financing Receivable, Recorded Investment [Line Items]
Total	488,058	[1]	458,538	[2]
Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Total	929,040	[1]	858,030	[2]
Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Total	337,801	[1]	306,946	[2]
Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Total	67,647	[1]	60,099	[2]
Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Total	179,199	[1]	183,770	[2]
Loans Acquired with Deteriorated Credit Quality
Financing Receivable, Recorded Investment [Line Items]
Total	9,117		11,048		$ 7,555
Carrying Amount, Net of Allowance	9,106		10,943		7,555
Loans Acquired with Deteriorated Credit Quality | Commercial and Industrial Loans
Financing Receivable, Recorded Investment [Line Items]
Total	988		1,656		1,325
Loans Acquired with Deteriorated Credit Quality | Commercial Real Estate Loans
Financing Receivable, Recorded Investment [Line Items]
Total	6,452		7,688		5,363
Loans Acquired with Deteriorated Credit Quality | Agricultural Loans
Financing Receivable, Recorded Investment [Line Items]
Total	789		706		0
Loans Acquired with Deteriorated Credit Quality | Consumer Loans
Financing Receivable, Recorded Investment [Line Items]
Total	0		53		0
Loans Acquired with Deteriorated Credit Quality | Residential Mortgage Loans
Financing Receivable, Recorded Investment [Line Items]
Total	$ 888		$ 945		$ 867
[1]	Total recorded investment in loans includes $9,483 in accrued interest.
[2]	Total recorded investment in loans includes $8,011 in accrued interest.

Loans (Schedule of Accretable Y

Loans (Schedule of Accretable Yield, or Income Expected to be Collected) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at January 1	$ 2,521	$ 1,279	$ 1,685
New Loans Purchased	0	1,395	0
Accretion of Income	(425)	(943)	(483)
Reclassifications from Non-accretable Difference	638	985	104
Charge-off of Accretable Yield	0	(195)	(27)
Balance at December 31	$ 2,734	$ 2,521	$ 1,279

Loans (Schedule of Loans to Sha

Loans (Schedule of Loans to Shareholders Activity) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance January 1, 2017	$ 14,276
Additions	11,340
Changes in Persons Included	0
Deductions, Collected	(9,754)
Deductions, Charged-off	0
Balance December 31, 2017	$ 15,862

Premises, Furniture, and Equi72

Premises, Furniture, and Equipment (Schedule of Premises, Furniture and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total Premises, Furniture and Equipment	$ 100,519	$ 92,761
Less: Accumulated Depreciation	(46,273)	(44,531)
Total	54,246	48,230
Depreciation expense	3,933	3,774	$ 3,310
Land
Property, Plant and Equipment [Line Items]
Total Premises, Furniture and Equipment	11,541	10,255
Buildings and Improvements
Property, Plant and Equipment [Line Items]
Total Premises, Furniture and Equipment	60,076	55,676
Furniture and Equipment
Property, Plant and Equipment [Line Items]
Total Premises, Furniture and Equipment	$ 28,902	$ 26,830

Premises, Furniture, and Equi73

Premises, Furniture, and Equipment (Schedule of Capital Leased Assets) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)branch_building	Dec. 31, 2016USD ($)
Property, Plant and Equipment [Abstract]
Number of branch buildings under a capital lease | branch_building	3
Lease expiration date	Dec. 31, 2033
Capital Leases	$ 4,219	$ 4,219
Less: Accumulated Depreciation	(1,312)	(1,102)
Total	$ 2,907	$ 3,117

Premises, Furniture, and Equi74

Premises, Furniture, and Equipment (Schedule of Future Minimum Lease Payments under Capitalized Leases) (Details) $ in Thousands	Dec. 31, 2017USD ($)
Property, Plant and Equipment [Abstract]
2,018	$ 519
2,019	519
2,020	519
2,021	519
2,022	519
Thereafter	4,511
Total minimum lease payments	7,106
Less: Amount representing interest	(3,456)
Present Value of Net Minimum Lease Payments	$ 3,650

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
2,018	$ 221,568
2,019	55,575
2,020	58,106
2,021	37,081
2,022	15,376
Thereafter	179
Total	387,885	$ 378,181
Time deposits of $250 or more and Brokered CDs	119,802	92,624
Time deposits originated from outside the geographic area	$ 0	$ 9,083

FHLB Advances and Other Borro76

FHLB Advances and Other Borrowings (Schedule of Repurchase Agreements) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Long-term Advances from Federal Home Loan Bank collateralized by qualifying mortgages, investment securities, and mortgage-backed securities	$ 126,836	$ 105,820
Capital Lease Obligation	3,650	3,765
Long-term Borrowings	141,717	120,560
Overnight Variable Rate Advances from Federal Home Loan Bank collateralized by qualifying mortgages, investment securities, and mortgage-backed securities	92,000	91,500
Federal Funds Purchased	0	3,642
Repurchase Agreements	41,499	42,412
Short-term Borrowings	133,499	137,554
Total Borrowings	275,216	258,114
American Community Bancorp
Business Acquisition [Line Items]
Junior Subordinated Debentures assumed from Business Acquisitions	5,624	5,474
River Valley Bancorp
Business Acquisition [Line Items]
Junior Subordinated Debentures assumed from Business Acquisitions	$ 5,607	$ 5,501

FHLB Advances and Other Borro77

FHLB Advances and Other Borrowings (Schedule of Additional Collateral) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Advances from Federal Home Loan Banks [Abstract]
Average Daily Balance During the Year	$ 40,476	$ 33,317
Average Interest Rate During the Year	0.47%	0.39%
Maximum Month-end Balance During the Year	$ 47,934	$ 45,313
Weighted Average Interest Rate at Year-end	0.50%	0.50%

FHLB Advances and Other Borro78

FHLB Advances and Other Borrowings (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Percentage over variable rate	2.875%
Line of credit, maximum borrowing capacity	$ 20,000,000	$ 20,000,000
Line of credit, outstanding balance	$ 0	0
Line of credit, unused capacity, commitment fee percentage	0.25%
Junior subordinated debt for Tier 1 capital purposes	$ 11,060,000	10,809,000
Deposits from principal officers, directors and their affiliates	$ 49,900,000	$ 48,200,000
Minimum
Debt Instrument [Line Items]
Interest rate on FHLB advances	1.36%	0.92%
Maximum
Debt Instrument [Line Items]
Interest rate on FHLB advances	7.22%	7.22%
Weighted Average
Debt Instrument [Line Items]
Interest rate on FHLB advances	1.84%	1.67%

FHLB Advances and Other Borro79

FHLB Advances and Other Borrowings (Scheduled Principal Payments on Long-Term Borrowings) (Details) $ in Thousands	Dec. 31, 2017USD ($)
Advances from Federal Home Loan Banks [Abstract]
2,018	$ 40,210
2,019	31,075
2,020	25,551
2,021	5,000
2,022	0
Thereafter	25,000
Total	$ 126,836

FHLB Advances and Other Borro80

FHLB Advances and Other Borrowings (Schedule of Issuance of Subordinated Debentures) (Details) - USD ($)	Jul. 15, 2005	May 06, 2005	Mar. 26, 2003	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Percentage over variable rate				2.875%
ACB Trust I
Debt Instrument [Line Items]
Date of Issuance		May 6, 2005
Issuance Amount		$ 5,155,000
Carrying Amount at December 31, 2017				$ 3,553,000
Variable Rate		90 day LIBOR + 2.15%
Rate as of December 31				3.84%	3.15%
Maturity Date		May 31, 2035
ACB Trust I | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Percentage over variable rate		2.15%
ACB Trust II
Debt Instrument [Line Items]
Date of Issuance	Jul. 15, 2005
Issuance Amount	$ 3,093,000
Carrying Amount at December 31, 2017				$ 2,071,000
Variable Rate	90 day LIBOR + 1.85%
Rate as of December 31				3.30%	2.77%
Maturity Date	Jul. 31, 2035
ACB Trust II | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Percentage over variable rate	1.85%
RIVR Statutory Trust 1
Debt Instrument [Line Items]
Date of Issuance			Mar. 26, 2003
Issuance Amount			$ 7,217,000
Carrying Amount at December 31, 2017				$ 5,607,000
Variable Rate			3-Month LIBOR + 3.15%
Rate as of December 31				4.82%	4.15%
Maturity Date			Mar. 31, 2033
RIVR Statutory Trust 1 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Percentage over variable rate			3.15%

Shareholders' Equity (Schedule

Shareholders' Equity (Schedule of Consolidated and Affiliate Bank Actual Capital and Minimum Required Levels) (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
		Jan. 31, 2019	Dec. 31, 2019	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum Capital Required for Capital Adequacy Ratio, Capital Conservation Buffer						0.00%
Actual Capital Required for Capital Adequacy Ratio, Capital Conservation Buffer				1.25%	0.625%
Total Capital (to Risk Weighted Assets)
Actual Amount of Total Capital (to Risk Weighted Assets)				$ 305,773	$ 288,793
Actual Ratio of Total Capital (to Risk Weighted Assets)				12.29%	12.48%
Minimum Required For Capital Adequacy Purposes: Amount, Total Capital				$ 199,093	$ 185,104
Minimum Required For Capital Adequacy Purposes: Ratio, Total Capital (to Risk Weighted Assets)	[1]			8.00%	8.00%
Minimum Required To Be Well- Capitalized Under Prompt Corrective Action Regulations: Amount, Total Capital (to Risk Weighted Assets)				$ 248,866	$ 231,380
Minimum Required To Be Well- Capitalized Under Prompt Corrective Action Regulations: Ratio, Total Capital (to Risk Weighted Assets)				10.00%	10.00%
Tier 1 (Core) Capital (to Risk Weighted Assets)
Actual Amount of Tier 1 Capital (to Risk Weighted Assets)				$ 290,079	$ 273,985
Actual Ratio of Tier 1 Capital (to Risk Weighted Assets)				11.66%	11.84%
Minimum Required For Capital Adequacy Purposes: Amount, Tier 1 Capital (to Risk Weighted Assets)				$ 149,320	$ 138,828
Minimum Required For Capital Adequacy Purposes: Ratio, Tier 1 Capital (to Risk Weighted Assets)	[1]			6.00%	6.00%
Minimum Required To Be Well- Capitalized Under Prompt Corrective Action Regulations: Amount, Tier 1 Capital (to Risk Weighted Assets)				$ 199,093	$ 185,104
Minimum Required To Be Well- Capitalized Under Prompt Corrective Action Regulations: Ratio, Tier 1 Capital (to Risk Weighted Assets)				8.00%	8.00%
Common Tier 1, (CET 1) Capital Ratio (to Risk Weighted Assets)
Actual Amount of Common Tier 1 Capital (to Risk Weighted Assets)				$ 290,079	$ 273,985
Actual Ratio of Common Tier 1 Capital (to Risk Weighted Assets)				11.66%	11.84%
Minimum Required For Capital Adequacy Purposes: Amount, Common Tier 1 Capital (to Risk Weighted Assets)				$ 111,990	$ 104,121
Minimum Required For Capital Adequacy Purposes: Ratio, Common Tier 1 Capital (to Risk Weighted Assets)	[1]			4.50%	4.50%
Minimum Required To Be Well- Capitalized Under Prompt Corrective Action Regulations: Amount, Common Tier 1 Capital (to Risk Weighted Assets)				$ 161,763	$ 150,397
Minimum Required To Be Well- Capitalized Under Prompt Corrective Action Regulations: Ratio, Common Tier 1 Capital (to Risk Weighted Assets)				6.50%	6.50%
Tier 1 Core Capital (to Average Assets)
Actual Amount of Tier 1 Capital (to Average Assets)				$ 290,079	$ 273,985
Actual Ratio of Tier 1 Capital (to Average Assets)				9.63%	9.46%
Minimum Required For Capital Adequacy Purposes: Amount, Tier 1 Capital (to Average Assets)				$ 120,509	$ 115,853
Minimum Required For Capital Adequacy Purposes: Ratio, Tier 1 Capital (to Average Assets)	[1]			4.00%	4.00%
Minimum Required To Be Well- Capitalized Under Prompt Corrective Action Regulations: Amount, Tier 1 Capital (to Average Assets)				$ 150,637	$ 144,816
Minimum Required To Be Well- Capitalized Under Prompt Corrective Action Regulations: Ratio, Tier 1 Capital (to Average Assets)				5.00%	5.00%
Bank | Scenario, Forecast
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Maximum Capital Required for Capital Adequacy Ratio, Capital Conservation Buffer			2.50%
Consolidated
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum Capital Required for Capital Adequacy Ratio, Capital Conservation Buffer						0.00%
Actual Capital Required for Capital Adequacy Ratio, Capital Conservation Buffer				1.25%	0.625%
Total Capital (to Risk Weighted Assets)
Actual Amount of Total Capital (to Risk Weighted Assets)				$ 339,391	$ 307,754
Actual Ratio of Total Capital (to Risk Weighted Assets)				13.62%	13.30%
Minimum Required For Capital Adequacy Purposes: Amount, Total Capital				$ 199,363	$ 185,117
Minimum Required For Capital Adequacy Purposes: Ratio, Total Capital (to Risk Weighted Assets)	[1]			8.00%	8.00%
Tier 1 (Core) Capital (to Risk Weighted Assets)
Actual Amount of Tier 1 Capital (to Risk Weighted Assets)				$ 323,697	$ 292,946
Actual Ratio of Tier 1 Capital (to Risk Weighted Assets)				12.99%	12.66%
Minimum Required For Capital Adequacy Purposes: Amount, Tier 1 Capital (to Risk Weighted Assets)				$ 149,522	$ 138,838
Minimum Required For Capital Adequacy Purposes: Ratio, Tier 1 Capital (to Risk Weighted Assets)	[1]			6.00%	6.00%
Common Tier 1, (CET 1) Capital Ratio (to Risk Weighted Assets)
Actual Amount of Common Tier 1 Capital (to Risk Weighted Assets)				$ 312,637	$ 282,138
Actual Ratio of Common Tier 1 Capital (to Risk Weighted Assets)				12.55%	12.19%
Minimum Required For Capital Adequacy Purposes: Amount, Common Tier 1 Capital (to Risk Weighted Assets)				$ 112,142	$ 104,129
Minimum Required For Capital Adequacy Purposes: Ratio, Common Tier 1 Capital (to Risk Weighted Assets)	[1]			4.50%	4.50%
Tier 1 Core Capital (to Average Assets)
Actual Amount of Tier 1 Capital (to Average Assets)				$ 323,697	$ 292,946
Actual Ratio of Tier 1 Capital (to Average Assets)				10.71%	10.09%
Minimum Required For Capital Adequacy Purposes: Amount, Tier 1 Capital (to Average Assets)				$ 120,862	$ 116,165
Minimum Required For Capital Adequacy Purposes: Ratio, Tier 1 Capital (to Average Assets)	[1]			4.00%	4.00%
Consolidated | Scenario, Forecast
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Maximum Capital Required for Capital Adequacy Ratio, Capital Conservation Buffer		2.50%
[1]	Excludes capital conservation buffer.

Shareholders' Equity (Narrative

Shareholders' Equity (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017USD ($)installmentPlanshares	Dec. 31, 2016USD ($)shares	Dec. 31, 2015USD ($)shares	Apr. 26, 2001shares
Number of equity incentive plans | Plan	3
Share-based compensation, number of shares available for future grants (in shares) | shares	386,754
Stock option expiration period	10 years
Stock compensation expense	$ 657,000	$ 570,000	$ 580,000
Unrecognized expense related to restricted stock and cash entitlements	1,983,000	1,774,000	1,542,000
Stock compensation expense, net of tax	$ 1,157,000	$ 1,195,000	$ 928,000
Common stock, authorized shares repurchase (in shares) | shares				911,631
Total shares repurchased (in shares) | shares	502,447
Common stock, shares repurchased (in shares) | shares	0	0	0
Bank
Retained earnings available for payment of dividends to parent company without prior regulatory approval	$ 64,000,000
Nonqualified Stock Options
Stock option expiration period	20 years
Employee Stock Option
Number of options granted (in shares) | shares	0	0	0
Stock compensation expense	$ 0	$ 0	$ 0
Restricted Stock
Restricted stock as a percent of grant	60.00%
Cash credit entitlements as a percent of grant	40.00%
Number of installments | installment	3
Restricted stock vesting percentage upon satisfaction of service requirement	100.00%
Restricted Stock | Year One
Percentage vested	33.30%
Restricted Stock | Year Two
Percentage vested	33.30%
Restricted Stock | Year Three
Percentage vested	33.30%
Employee Stock Purchase Plan
Share-based compensation, number of shares available for future grants (in shares) | shares	557,203
Stock compensation expense	$ 32,000	82,000	22,000
Unrecognized expense related to restricted stock and cash entitlements	$ 0	0	0
Share-based compensation arrangement, purchase price discount from fair market value	95.00%
Share-based compensation arrangement, number of shares authorized (in shares) | shares	750,000
Stock compensation expense, net of tax	$ 19,000	$ 50,000	$ 13,000

Shareholders' Equity (Schedul83

Shareholders' Equity (Schedule of Stock Option Activity under Equity Incentive Plan) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Stockholders' Equity Note [Abstract]
Intrinsic Value of Options Exercised	$ 0	$ 137,000	$ 559,000
Cash Received from Option Exercises	0	0	0
Tax Benefit of Option Exercises	$ 0	$ 54,000	$ 224,000
Weighted Average Fair Value of Options Granted (in USD per share)	$ 0	$ 0	$ 0

Shareholders' Equity (Schedul84

Shareholders' Equity (Schedule of Restricted Stock And Cash Entitlements Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Stockholders' Equity Note [Abstract]
Restricted Stock Expense	$ 1,246	$ 1,407	$ 963
Cash Entitlement Expense	657	570	580
Tax Effect	(746)	(782)	(615)
Net of Tax	$ 1,157	$ 1,195	$ 928

Shareholders' Equity (Schedul85

Shareholders' Equity (Schedule of Restricted Stock Grants Outstanding) (Details) - Restricted Stock	12 Months Ended
	Dec. 31, 2017$ / sharesshares
Restricted Shares
Number of Shares Outstanding at Beginning of Period (in shares) | shares	53,163
Number of Shares Granted (in shares) | shares	43,386
Number of Shares Issued and Vested (in shares) | shares	(49,733)
Number of Shares Forfeited (in shares) | shares	(510)
Number of Shares Outstanding at End of Period (in shares) | shares	46,306
Weighted Average Market Price at Grant
Weighted Average Market Price at Grant Outstanding at Beginning of Period (in USD per share) | $ / shares	$ 22.32
Weighted Average Market Price at Grant Granted (in USD per share) | $ / shares	31.77
Weighted Average Market Price at Grant Issued and Vested (in USD per share) | $ / shares	24.79
Weighted Average Market Price at Grant Forfeited (in USD per share) | $ / shares	27.22
Weighted Average Market Price at Grant Outstanding at End of Period (in USD per share) | $ / shares	$ 28.47

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)$ / Family	Dec. 31, 2016USD ($)	Jun. 30, 2016USD ($)	Dec. 31, 2015USD ($)	Jun. 30, 2015USD ($)
Defined Benefit Plan Disclosure [Line Items]
401(k) deferred compensation and profit sharing plan, company contributions	$ 1,328	$ 1,121		$ 999
Annual losses per covered family | $ / Family	150,000
Annual deductible per covered family | $ / Family	255,000
Charges to earnings for self-insurance reserve	$ 4,192	3,153		2,666
Pension expense	$ 63	54
River Valley Bancorp | The Pentegra DB Plan
Defined Benefit Plan Disclosure [Line Items]
Total contributions under Defined Benefit Plan as reported on Form 5500			$ 153,186		$ 163,183
Multiemployer plan, maximum percentage of employer's contributions	5.00%
Postretirement Medical and Life Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Estimated future employer contributions in 2018	$ 84
Certain directors and officers
Defined Benefit Plan Disclosure [Line Items]
Accrued benefits payable	1,896	1,882
Deferred compensation expense	187	297		149
Certain officers
Defined Benefit Plan Disclosure [Line Items]
Accrued benefits payable	84	136
Deferred compensation expense	$ 48	$ 0		$ 215

Employee Benefit Plans (Schedul

Employee Benefit Plans (Schedule of Changes in Accumulated Postretirement Benefits Obligations) (Details) - Postretirement Medical and Life Benefit Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Obligation at the Beginning of Year	$ 814	$ 783
Unrecognized Loss (Gain)	226	24
Components of Net Periodic Postretirement Benefit Cost
Service Cost	50	41	$ 42
Interest Cost	29	29	26
Net Expected Benefit Payments	(58)	(63)
Obligation at End of Year	$ 1,061	$ 814	$ 783

Employee Benefit Plans (Compone

Employee Benefit Plans (Components of Postretirement Benefit Expense) (Details) - Postretirement Medical and Life Benefit Plan - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Service Cost	$ 50	$ 41	$ 42
Interest Cost	29	29	26
Amortization of Unrecognized Net (Gain) Loss	8	6	5
Net Postretirement Benefit Expense	87	76	73
Net (Gain) Loss During Period Recognized in Other Comprehensive Income (Loss)	218	18	17
Total Recognized in Net Postretirement Benefit Expense and Other Comprehensive Income	$ 305	$ 94	$ 90

Employee Benefit Plans (Sched89

Employee Benefit Plans (Schedule of Assumptions used to Determine Net Periodic Cost and Benefit Obligations) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Postretirement Medical and Life Benefit Plan
Defined Benefit Plan Disclosure [Line Items]
Discount Rate	3.35%	3.72%	3.82%

Employee Benefit Plans (Sched90

Employee Benefit Plans (Schedule of Assumption of Health Care Cost Trend Rates) (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Retirement Benefits [Abstract]
Health Care Cost Trend Rate Assumed for Next Year	8.00%	8.00%
Rate that the Cost Trend Rate Gradually Declines to	5.00%	5.00%
Year that the Rate Reaches the Rate it is Assumed to Remain at	2,023	2,022

Employee Benefit Plans (Sched91

Employee Benefit Plans (Schedule of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Retirement Benefits [Abstract]
Effect on Total of Service and Interest Cost, One-Percentage-Point Increase	$ 7
Effect on Postretirement Benefit Obligation, One-Percentage-Point Increase	66
Effect on Total of Service and Interest Cost, One-Percentage-Point Decrease	(6)
Effect on Postretirement Benefit Obligation, One-Percentage-Point Decrease	$ (59)

Employee Benefit Plans (Sched92

Employee Benefit Plans (Schedule of Expected Benefit Payments) (Details) - Postretirement Medical and Life Benefit Plan $ in Thousands	Dec. 31, 2017USD ($)
Defined Benefit Plan Disclosure [Line Items]
2,018	$ 84
2,019	91
2,020	86
2,021	77
2,022	85
2023-2027	$ 547

Income Taxes (Provision for Inc

Income Taxes (Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Current Federal	$ 10,481	$ 11,468	$ 11,407
Current State	473	447	898
Deferred Federal	276	1,611	(920)
Deferred State	304	420	221
Total Income Taxes	$ 11,534	$ 13,946	$ 11,606

Income Taxes (Schedule of Effec

Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Statutory Rate applied to the pre-tax income	35.00%	35.00%	35.00%
Statutory Rate Times Pre-tax Income	$ 18,274	$ 17,195	$ 14,585
Add (Subtract) the Tax Effect of:
Income from Tax-exempt Loans and Investments	(3,304)	(2,929)	(2,250)
State Income Tax, Net of Federal Tax Effect	505	564	727
General Business Tax Credits	(715)	(621)	(750)
Company Owned Life Insurance	(469)	(346)	(296)
Revaluation of Deferred Tax Assets/Liabilities due to Tax Reform	(2,284)
Other Differences	(473)	83	(410)
Total Income Taxes	$ 11,534	$ 13,946	$ 11,606

Income Taxes (Schedule of Net D

Income Taxes (Schedule of Net Deferred Tax Liability) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred Tax Assets:
Allowance for Loan Losses	$ 3,645	$ 5,269
Unrealized Loss on Securities	665	3,456
Deferred Compensation and Employee Benefits	702	1,146
Other-than-temporary Impairment	243	377
Accrued Expenses	645	956
Business Combination Fair Value Adjustments	1,041	2,838
Pension and Postretirement Plans	100	67
Non-Accrual Loan Interest Income	152	158
Net Operating Loss Carryforward		196
Unused Tax Credits		86
Other	302	472
Total Deferred Tax Assets	7,495	15,021
Deferred Tax Liabilities:
Depreciation	(1,309)	(1,612)
Leasing Activities, Net	(7,343)	(9,845)
FHLB Stock Dividends	(196)	(304)
Prepaid Expenses	(368)	(461)
Intangibles	(597)	(1,113)
Deferred Loan Fees	(483)	(691)
Mortgage Servicing Rights	(133)	(231)
General Business Tax Credits		(235)
Other	(1,098)	(1,692)
Total Deferred Tax Liabilities	(11,527)	(16,184)
Valuation Allowance	0	0
Net Deferred Tax Liability	$ (4,032)	$ (1,163)

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details)	3 Months Ended	12 Months Ended
	Dec. 31, 2017USD ($)	Dec. 31, 2017USD ($)business	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Income Tax Disclosure [Abstract]
Reduction in income tax expense based upon initial revaluation of deferred tax assets and liabilities as result of tax reform	$ 2,284,000
Number of acquired banking companies | business		3
Amount of retained earnings which has no provision for federal income taxes	5,095,000	$ 5,095,000
Unrecorded deferred income tax liability	1,070,000	1,070,000
Unrecognized tax benefits	0	0	$ 0	$ 0
Increase in unrecognized tax benefits relative to tax positions taken		0
Accrual of unrecognized tax benefit, income tax penalties and interest accrued	$ 0	$ 0	$ 0	$ 0

Common Stock Split (Details)

Common Stock Split (Details)	Apr. 21, 2017
Equity [Abstract]
Stock split conversion ratio	1.50

Per Share Data (Computation of

Per Share Data (Computation of Basic Earnings Per Share and Diluted Earnings Per Share) (Details) $ / shares in Units, $ in Thousands		Apr. 21, 2017	Dec. 31, 2017USD ($)$ / shares	Sep. 30, 2017USD ($)$ / shares	Jun. 30, 2017USD ($)$ / shares	Mar. 31, 2017USD ($)$ / shares	Dec. 31, 2016USD ($)$ / shares	Sep. 30, 2016USD ($)$ / shares	Jun. 30, 2016USD ($)$ / shares	Mar. 31, 2016USD ($)$ / shares	Dec. 31, 2017USD ($)$ / sharesshares		Dec. 31, 2016USD ($)$ / sharesshares		Dec. 31, 2015USD ($)$ / sharesshares
Basic Earnings per Share:(1)
Net Income | $			$ 11,621	$ 9,660	$ 9,839	$ 9,556	$ 10,065	$ 10,185	$ 9,788	$ 5,146	$ 40,676		$ 35,184		$ 30,064
Weighted Average Shares Outstanding (in shares)	[1]										22,924,726		22,389,137		19,882,503
Basic Earnings per Share (in USD per share) | $ / shares			$ 0.51	$ 0.42	$ 0.43	$ 0.42	$ 0.44	$ 0.45	$ 0.43	$ 0.25	$ 1.77	[1],[2]	$ 1.57	[1],[2]	$ 1.51	[1],[2]
Diluted Earnings per Share:
Net Income | $			$ 11,621	$ 9,660	$ 9,839	$ 9,556	$ 10,065	$ 10,185	$ 9,788	$ 5,146	$ 40,676		$ 35,184		$ 30,064
Weighted Average Shares Outstanding (in shares)	[1]										22,924,726		22,389,137		19,882,503
Stock Options, Net (in shares)	[1]										0		1,979		5,871
Diluted Weighted Average Shares Outstanding (in shares)	[1]										22,924,726		22,391,116		19,888,374
Diluted Earnings per Share (in USD per share) | $ / shares			$ 0.51	$ 0.42	$ 0.43	$ 0.42	$ 0.44	$ 0.45	$ 0.43	$ 0.25	$ 1.77	[1],[2]	$ 1.57	[1],[2]	$ 1.51	[1],[2]
Antidilutive securities excluded from computation of earnings per share (in shares)											0		0		0
Stock split conversion ratio		1.50
[1]	Share and per share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017.
[2]	Per share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017.

Operating Lease Commitments (De

Operating Lease Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Leases [Abstract]
Rental expense, operating leases	$ 1,213	$ 1,215	$ 753
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2,018	1,050
2,019	956
2,020	843
2,021	752
2,022	638
Thereafter	2,980
Total	$ 7,219

Commitments and Off-balance 100

Commitments and Off-balance Sheet Items (Summary of Commitments and Contingencies) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Commitment to Sell Loans, Mandatory
Commitments and Contingent Liabilities [Line Items]
Fixed Rate	$ 681	$ 973
Variable Rate	0	0
Commitment to Sell Loans, Non-Mandatory
Commitments and Contingent Liabilities [Line Items]
Fixed Rate	24,628	30,708
Variable Rate	188	677
Standby Letters of Credit
Commitments and Contingent Liabilities [Line Items]
Fixed Rate	959	1,059
Variable Rate	4,736	7,869
Commitments to Fund Loans:
Commitments and Contingent Liabilities [Line Items]
Fixed Rate	47,519	48,439
Variable Rate	569,970	512,471
Consumer Lines | Commitments to Fund Loans:
Commitments and Contingent Liabilities [Line Items]
Fixed Rate	10,997	10,081
Variable Rate	260,934	237,087
Residential Mortgages | Commitments to Fund Loans:
Commitments and Contingent Liabilities [Line Items]
Fixed Rate	17,255	13,760
Variable Rate	655	765
Commercial Operating Lines | Commitments to Fund Loans:
Commitments and Contingent Liabilities [Line Items]
Fixed Rate	19,267	24,598
Variable Rate	$ 308,381	$ 274,619

Commitments and Off-balance 101

Commitments and Off-balance Sheet Items (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017
Minimum
Commitments and Contingent Liabilities [Line Items]
Loans and Leases Receivable Fixed Commitment Interest Rates	2.00%
Loans and Leases Receivable Fixed Commitment Maturity	1 year
Maximum
Commitments and Contingent Liabilities [Line Items]
Loans and Leases Receivable Fixed Commitment Interest Rates	18.00%
Loans and Leases Receivable Fixed Commitment Maturity	32 years

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details) - USD ($)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Held-for-Sale, fair value		$ 6,719,000	$ 15,273,000
Contractual principal balance of loans held-for-sale		6,576,000	14,983,000
Difference in amount of loan held-for-sale		143,000	290,000
Impaired loans, carrying amount	[1]	9,293,000	1,575,000
Valuation allowance for loans losses		2,234,000	355,000
Other real estate, carrying value		0	0
Cost of real estate sales charged through operating income			75,000
Impaired Loans
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans, carrying amount		9,020,000	663,000
Valuation allowance for loans losses		2,228,000	255,000
Increase (decrease) in provision for loan losses		1,973,000	115,000
Obligations of State and Political Subdivisions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other changes in fair value		(60,000)	(75,000)
Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities		740,994,000	709,786,000
Fair Value, Measurements, Recurring | Obligations of State and Political Subdivisions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities		273,309,000	247,519,000
Fair Value, Measurements, Recurring | Equity Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities		353,000	353,000
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities		6,002,000	7,377,000
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Obligations of State and Political Subdivisions
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities		5,649,000	7,024,000
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3) | Equity Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities		$ 353,000	$ 353,000
[1]	Unpaid Principal Balance is the remaining contractual payments gross of partial charge-offs and discounts.

Fair Value (Schedule of Assets

Fair Value (Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets:
Securities	$ 740,994	$ 709,786
Loans Held-for-Sale	6,719	15,273
Derivative Assets	1,564	1,291
Mortgage Servicing Rights	547	611
Derivative Liabilities	1,633	1,238
Obligations of State and Political Subdivisions
Assets:
Securities	273,309	247,519
MBS/CMO – Residential
Assets:
Securities	467,332	461,914
Equity Securities
Assets:
Securities	353	353
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Securities	0	0
Loans Held-for-Sale	0	0
Derivative Assets	0	0
Mortgage Servicing Rights	0	0
Derivative Liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Obligations of State and Political Subdivisions
Assets:
Securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | MBS/CMO – Residential
Assets:
Securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity Securities
Assets:
Securities	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Securities	734,992	702,409
Loans Held-for-Sale	6,719	15,273
Derivative Assets	1,564	1,291
Mortgage Servicing Rights	547	611
Derivative Liabilities	1,633	1,238
Significant Other Observable Inputs (Level 2) | Obligations of State and Political Subdivisions
Assets:
Securities	267,660	240,495
Significant Other Observable Inputs (Level 2) | MBS/CMO – Residential
Assets:
Securities	467,332	461,914
Significant Other Observable Inputs (Level 2) | Equity Securities
Assets:
Securities	0	0
Significant Unobservable Inputs (Level 3)
Assets:
Securities	6,002	7,377
Loans Held-for-Sale	0	0
Derivative Assets	0	0
Mortgage Servicing Rights	0	0
Derivative Liabilities	0	0
Significant Unobservable Inputs (Level 3) | Obligations of State and Political Subdivisions
Assets:
Securities	5,649	7,024
Significant Unobservable Inputs (Level 3) | MBS/CMO – Residential
Assets:
Securities	0	0
Significant Unobservable Inputs (Level 3) | Equity Securities
Assets:
Securities	$ 353	$ 353

Fair Value (Reconciliation of a

Fair Value (Reconciliation of all Assets Measured at Fair Value on a Recurring Basis, Using Significant Unobservable Inputs (Level 3)) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Obligations of State and Political Subdivisions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance of Recurring Level 3 Assets at January 1	$ 7,024	$ 8,749
Total Gains or Losses Included in Other Comprehensive Income	(60)	(75)
Maturities / Calls	(1,315)	(1,650)
Purchases	0	0
Balance of Recurring Level 3 Assets at December 31	5,649	7,024
Equity Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance of Recurring Level 3 Assets at January 1	353	353
Total Gains or Losses Included in Other Comprehensive Income	0	0
Maturities / Calls	0	0
Purchases	0	0
Balance of Recurring Level 3 Assets at December 31	$ 353	$ 353

Fair Value (Assets and Liabilit

Fair Value (Assets and Liabilities Measured at Fair Value on Non-Recurring Basis) (Details) - Fair Value, Measurements, Nonrecurring - Impaired Loans - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Commercial and Industrial Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 3,354	$ 60
Commercial Real Estate Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	3,438	348
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial and Industrial Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial Real Estate Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Significant Other Observable Inputs (Level 2) | Commercial and Industrial Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Significant Other Observable Inputs (Level 2) | Commercial Real Estate Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
Significant Unobservable Inputs (Level 3) | Commercial and Industrial Loans and Leases
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	3,354	60
Significant Unobservable Inputs (Level 3) | Commercial Real Estate Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 3,438	$ 348

Fair Value (Fair Value Assets a

Fair Value (Fair Value Assets and Liabilities Measured on Nonrecurring Basis Validation Techniques) (Details) - Significant Unobservable Inputs (Level 3) - Impaired Loans - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Commercial and Industrial Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 3,354	$ 60
Commercial and Industrial Loans | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	0.00%	0.00%
Commercial and Industrial Loans | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	95.00%	100.00%
Commercial and Industrial Loans | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	84.00%	89.00%
Commercial Real Estate Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 3,438	$ 348
Commercial Real Estate Loans | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	30.00%	33.00%
Commercial Real Estate Loans | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	76.00%	77.00%
Commercial Real Estate Loans | Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Range (Weighted Average)	47.00%	56.00%

Fair Value (Carrying Amounts an

Fair Value (Carrying Amounts and Estimated Fair Values of Company's Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financial Assets:
Loans, Net	$ 2,125,944	$ 1,975,147
FHLB Stock and Other Restricted Stock	13,048	13,048
Financial Liabilities:
Time Deposits	(387,885)	(378,181)
Short-term Borrowings	(133,499)	(137,554)
Long-term Debt	(141,717)	(120,560)
Reported Value Measurement
Financial Assets:
Cash and Short-term Investments	70,359	64,816
Loans, Net	2,119,152	1,974,074
FHLB Stock and Other Restricted Stock	13,048	13,048
Accrued Interest Receivable	13,258	11,413
Financial Liabilities:
Demand, Savings, and Money Market Deposits	(2,096,167)	(1,971,370)
Time Deposits	(387,885)	(378,181)
Short-term Borrowings	(133,499)	(137,554)
Long-term Debt	(141,717)	(120,560)
Accrued Interest Payable	(1,058)	(789)
Estimate of Fair Value Measurement
Financial Assets:
Cash and Short-term Investments	70,359	64,816
Loans, Net	2,120,154	1,980,523
Accrued Interest Receivable	13,258	11,413
Financial Liabilities:
Demand, Savings, and Money Market Deposits	(2,096,167)	(1,971,370)
Time Deposits	(388,640)	(378,000)
Short-term Borrowings	(133,499)	(137,554)
Long-term Debt	(140,418)	(120,502)
Accrued Interest Payable	(1,058)	(789)
Estimate of Fair Value Measurement | Level 1
Financial Assets:
Cash and Short-term Investments	58,233	48,467
Loans, Net	0	0
Accrued Interest Receivable	0	0
Financial Liabilities:
Demand, Savings, and Money Market Deposits	(2,096,167)	(1,971,370)
Time Deposits	0	0
Short-term Borrowings	0	0
Long-term Debt	0	0
Accrued Interest Payable	0	0
Estimate of Fair Value Measurement | Level 2
Financial Assets:
Cash and Short-term Investments	12,126	16,349
Loans, Net	0	0
Accrued Interest Receivable	3,574	3,289
Financial Liabilities:
Demand, Savings, and Money Market Deposits	0	0
Time Deposits	(388,640)	(378,000)
Short-term Borrowings	(133,499)	(137,554)
Long-term Debt	(129,366)	(109,709)
Accrued Interest Payable	(1,042)	(775)
Estimate of Fair Value Measurement | Level 3
Financial Assets:
Cash and Short-term Investments	0	0
Loans, Net	2,120,154	1,980,523
Accrued Interest Receivable	9,684	8,124
Financial Liabilities:
Demand, Savings, and Money Market Deposits	0	0
Time Deposits	0	0
Short-term Borrowings	0	0
Long-term Debt	(11,052)	(10,793)
Accrued Interest Payable	$ (16)	$ (14)

Segment Information (Details)

Segment Information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017USD ($)office	Sep. 30, 2017USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2017USD ($)segmentoffice	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)
Segment Reporting Information [Line Items]
Number of primary segments | segment									3
Net Interest Income	$ 25,454	$ 24,917	$ 24,813	$ 24,725	$ 24,889	$ 24,560	$ 24,671	$ 20,784	$ 99,909	$ 94,904	$ 75,552
Net Gains on Sales of Loans									3,280	3,359	2,959
Net Gains on Securities									596	1,979	725
Trust and Investment Product Fees									5,272	4,644	3,957
Insurance Revenues									7,979	7,741	7,489
Noncash Items:
Provision for Loan Losses									1,750	1,200	0
Depreciation and Amortization									4,687	4,315	4,264
Income Tax Expense (Benefit)									11,534	13,946	11,606
Segment Profit (Loss)	11,621	$ 9,660	$ 9,839	$ 9,556	10,065	$ 10,185	$ 9,788	$ 5,146	40,676	35,184	30,064
Segment Assets	3,144,360				2,955,994				3,144,360	2,955,994	2,373,701
Other
Segment Reporting Information [Line Items]
Net Interest Income									(765)	(666)	(401)
Net Gains on Sales of Loans									0	0	0
Net Gains on Securities									3	0	27
Trust and Investment Product Fees									(3)	(15)	(3)
Insurance Revenues									0	0	0
Noncash Items:
Provision for Loan Losses									0	0	0
Depreciation and Amortization									256	238	150
Income Tax Expense (Benefit)									(1,385)	(1,269)	(869)
Segment Profit (Loss)									21	(1,260)	(330)
Segment Assets	$ (9,801)				(12,936)				$ (9,801)	(12,936)	(1,955)
Core Banking
Segment Reporting Information [Line Items]
Number of banking offices | office	53								53
Core Banking | Operating Segments
Segment Reporting Information [Line Items]
Net Interest Income									$ 100,659	95,562	75,939
Net Gains on Sales of Loans									3,280	3,359	2,959
Net Gains on Securities									593	1,979	698
Trust and Investment Product Fees									3	(3)	3
Insurance Revenues									28	23	24
Noncash Items:
Provision for Loan Losses									1,750	1,200	0
Depreciation and Amortization									4,351	4,002	3,994
Income Tax Expense (Benefit)									12,262	14,306	11,836
Segment Profit (Loss)									39,520	35,070	29,461
Segment Assets	$ 3,142,096				2,958,585				3,142,096	2,958,585	2,367,296
Trust and Investment Advisory Services | Operating Segments
Segment Reporting Information [Line Items]
Net Interest Income									6	1	8
Net Gains on Sales of Loans									0	0	0
Net Gains on Securities									0	0	0
Trust and Investment Product Fees									5,272	4,662	3,957
Insurance Revenues									34	29	33
Noncash Items:
Provision for Loan Losses									0	0	0
Depreciation and Amortization									4	3	13
Income Tax Expense (Benefit)									145	168	(24)
Segment Profit (Loss)									217	227	(70)
Segment Assets	1,987				1,851				1,987	1,851	1,338
Insurance | Operating Segments
Segment Reporting Information [Line Items]
Net Interest Income									9	7	6
Net Gains on Sales of Loans									0	0	0
Net Gains on Securities									0	0	0
Trust and Investment Product Fees									0	0	0
Insurance Revenues									7,917	7,689	7,432
Noncash Items:
Provision for Loan Losses									0	0	0
Depreciation and Amortization									76	72	107
Income Tax Expense (Benefit)									512	741	663
Segment Profit (Loss)									918	1,147	1,003
Segment Assets	$ 10,078				$ 8,494				$ 10,078	$ 8,494	$ 7,022

Parent Company Financial Sta109

Parent Company Financial Statements (Condensed Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Securities Available-for-Sale, at Fair Value	$ 740,994	$ 709,786
Other Assets	30,451	25,917
TOTAL ASSETS	3,144,360	2,955,994	$ 2,373,701
LIABILITIES
Borrowings	275,216	258,114
TOTAL LIABILITIES	2,779,789	2,625,727
SHAREHOLDERS’ EQUITY
Common Stock	22,934	15,261
Additional Paid-in Capital	165,288	171,744
Retained Earnings	178,969	149,666
Accumulated Other Comprehensive Income (Loss)	(2,620)	(6,404)
TOTAL SHAREHOLDERS’ EQUITY	364,571	330,267	$ 252,348	$ 228,824
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	3,144,360	2,955,994
Parent Company
ASSETS
Cash	24,777	10,217
Securities Available-for-Sale, at Fair Value	353	353
Investment in Subsidiary Bank	342,054	322,138
Investment in Non-banking Subsidiaries	5,050	4,673
Other Assets	8,906	9,577
TOTAL ASSETS	381,140	346,958
LIABILITIES
Borrowings	11,231	10,975
Other Liabilities	5,338	5,716
TOTAL LIABILITIES	16,569	16,691
SHAREHOLDERS’ EQUITY
Common Stock	22,934	15,261
Additional Paid-in Capital	165,288	171,744
Retained Earnings	178,969	149,666
Accumulated Other Comprehensive Income (Loss)	(2,620)	(6,404)
TOTAL SHAREHOLDERS’ EQUITY	364,571	330,267
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 381,140	$ 346,958

Parent Company Financial Sta110

Parent Company Financial Statements (Condensed Statements of Income and Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
EXPENSES
Salaries and Employee Benefits									$ 46,642	$ 43,961	$ 35,042
Professional Fees									2,817	3,672	2,661
Interest Expense									11,121	8,461	6,068
INCOME BEFORE INCOME TAXES AND EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES									52,210	49,130	41,670
Income Tax Benefit									(11,534)	(13,946)	(11,606)
NET INCOME	$ 11,621	$ 9,660	$ 9,839	$ 9,556	$ 10,065	$ 10,185	$ 9,788	$ 5,146	40,676	35,184	30,064
Other Comprehensive Income:
COMPREHENSIVE INCOME									44,929	24,968	30,986
Parent Company
INCOME
Interest Income									34	20	30
Other Income (Loss)									25	(27)	21
Total Income									26,034	15,993	17,455
EXPENSES
Salaries and Employee Benefits									533	1,006	500
Professional Fees									602	1,096	739
Occupancy and Equipment Expense									7	13	8
Interest Expense									877	742	491
Other Expenses									794	750	657
Total Expenses									2,813	3,607	2,395
INCOME BEFORE INCOME TAXES AND EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES									23,221	12,386	15,060
Income Tax Benefit									1,415	1,284	893
INCOME BEFORE EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES									24,636	13,670	15,953
Equity in Undistributed Income of Subsidiaries									16,040	21,514	14,111
NET INCOME									40,676	35,184	30,064
Other Comprehensive Income:
Changes in Unrealized Gain (Loss) on Securities, Available-for-Sale									4,391	(10,202)	932
Changes in Unrecognized (Loss) in Postretirement Benefit Obligation, Net									(138)	(14)	(10)
COMPREHENSIVE INCOME									44,929	24,968	30,986
Parent Company | Bank
INCOME
Dividends from Subsidiaries									25,000	15,000	15,900
Parent Company | Non-bank
INCOME
Dividends from Subsidiaries									$ 975	$ 1,000	$ 1,504

Parent Company Financial Sta111

Parent Company Financial Statements (Condensed Statements of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 11,621	$ 9,660	$ 9,839	$ 9,556	$ 10,065	$ 10,185	$ 9,788	$ 5,146	$ 40,676	$ 35,184	$ 30,064
Adjustments to Reconcile Net Income to Net Cash from Operations
Interest Receivable and Other Assets									(4,528)	5,813	172
Change in Other Liabilities									(110)	(2,547)	(1,328)
Equity Based Compensation									1,246	1,407	963
Excess Tax Benefit from Restricted Share Grant									240	200	89
Net Cash from Operating Activities									54,875	41,913	31,267
CASH FLOWS FROM INVESTING ACTIVITIES
Cash Used for Business Acquisitions									0	(1,016)	0
Net Cash from Investing Activities									(189,280)	(71,689)	(126,929)
CASH FLOWS FROM FINANCING ACTIVITIES
Repayment of Long-term Debt									(53,864)	(24,910)	(44,135)
Issuance (Retirement) of Common Stock									(29)	55	49
Employee Stock Purchase Plan											447
Dividends Paid									(11,842)	(10,630)	(9,010)
Net Cash from Financing Activities									139,948	42,583	105,225
Net Change in Cash and Cash Equivalents									5,543	12,807	9,563
Cash and Cash Equivalents at Beginning of Year				64,816				52,009	64,816	52,009	42,446
Cash and Cash Equivalents at End of Year	70,359				64,816				70,359	64,816	52,009
Parent Company
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income									40,676	35,184	30,064
Adjustments to Reconcile Net Income to Net Cash from Operations
Interest Receivable and Other Assets									431	2,085	(5,331)
Change in Other Liabilities									(122)	310	1,226
Equity Based Compensation									1,246	1,407	963
Excess Tax Benefit from Restricted Share Grant									240	200	89
Equity in Excess Undistributed Income of Subsidiaries									(16,040)	(21,514)	(14,111)
Net Cash from Operating Activities									26,431	17,672	12,900
CASH FLOWS FROM INVESTING ACTIVITIES
Cash Used for Business Acquisitions									0	(15,992)	0
Net Cash from Investing Activities									0	(15,992)	0
CASH FLOWS FROM FINANCING ACTIVITIES
Repayment of Long-term Debt									0	0	(4,000)
Issuance (Retirement) of Common Stock									(29)	55	49
Employee Stock Purchase Plan											447
Dividends Paid									(11,842)	(10,630)	(9,010)
Net Cash from Financing Activities									(11,871)	(10,575)	(12,514)
Net Change in Cash and Cash Equivalents									14,560	(8,895)	386
Cash and Cash Equivalents at Beginning of Year				$ 10,217				$ 19,112	10,217	19,112	18,726
Cash and Cash Equivalents at End of Year	$ 24,777				$ 10,217				$ 24,777	$ 10,217	$ 19,112

Business Combinations, Goodw112

Business Combinations, Goodwill and Intangible Assets (Narrative) (Details) $ / shares in Units, $ in Thousands	Mar. 01, 2016USD ($)officeshares	Feb. 29, 2016USD ($)$ / shares	Jan. 31, 2017USD ($)	Sep. 30, 2016	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Business Acquisition [Line Items]
Assets					$ 3,144,360	$ 2,955,994	$ 2,373,701
Equity					364,571	330,267	252,348	$ 228,824
Goodwill					54,058	54,058	20,536	$ 20,536
Amortization of expense intangible assets					942	1,062	790
Core Banking
Business Acquisition [Line Items]
Goodwill					52,726	52,726	19,204
Insurance
Business Acquisition [Line Items]
Goodwill					$ 1,332	$ 1,332	$ 1,332
River Valley Bancorp
Business Acquisition [Line Items]
Assets		$ 516,300
Equity		$ 56,600
Direct acquisition costs	$ 4,300
Goodwill	33,522
Intangible assets	$ 2,613
Shares of common stock issued for acquisition (in shares) | shares	1,942,000
Number of the Company's common stock for each share of RIVR converted (in shares) | shares	0.770
Cash portion, cash per share for RIVR common stock converted (USD per share) | $ / shares		$ 9.90
Cash consideration	$ 24,975	$ 24,975
Cash for options and fractional shares	395	$ 395
Fair value of non-impaired loans and customers receivables acquired	309,000
Unpaid principal balance non-impaired loans and customers receivables acquired	$ 316,400
River Valley Bancorp | Core Deposit Intangible
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful live				8 years
River Valley Bancorp | INDIANA
Business Acquisition [Line Items]
Number of banking offices | office	14
River Valley Bancorp | KENTUCKY
Business Acquisition [Line Items]
Number of banking offices | office	1
Insurance Agency, Madison, Indiana | INDIANA | German American Insurance, Inc. | Affiliated Entity
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful live			7 years
Cash consideration			$ 209
Insurance Agency, Madison, Indiana | INDIANA | German American Insurance, Inc. | Customer Relationships | Affiliated Entity
Business Acquisition [Line Items]
Intangible assets			$ 209

Business Combinations, Goodw113

Business Combinations, Goodwill and Intangible Assets (Fair Value of Assets and Liabilities Acquired) (Details) - USD ($) $ in Thousands	Mar. 01, 2016	Feb. 29, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Recognized Amounts of Identifiable Assets Acquired and Liabilities Assumed:
Goodwill			$ 54,058	$ 54,058	$ 20,536	$ 20,536
River Valley Bancorp
Consideration
Cash for Options and Fractional Shares	$ 395	$ 395
Cash Consideration	24,975	$ 24,975
Equity Instruments	62,022
Fair Value of Total Consideration Transferred	87,392
Recognized Amounts of Identifiable Assets Acquired and Liabilities Assumed:
Cash	17,877
Federal Funds Sold and Other Short-term Investments	6,477
Interest-bearing Time Deposits with Banks	992
Securities	132,396
Loans	317,760
Stock in FHLB of Indianapolis and Other Restricted Stock, at Cost	3,127
Premises, Furniture & Equipment	9,650
Other Real Estate	882
Intangible Assets	2,613
Company Owned Life Insurance	12,842
Accrued Interest Receivable and Other Assets	9,139
Deposits - Non-interest Bearing	(9,584)
Deposits - Interest Bearing	(395,862)
FHLB Advances and Other Borrowings	(49,910)
Accrued Interest Payable and Other Liabilities	(4,529)
Total Identifiable Net Assets	53,870
Goodwill	$ 33,522

Business Combinations, Goodw114

Business Combinations, Goodwill and Intangible Assets (Changes in Carrying Amount of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Roll Forward]
Beginning of Year	$ 54,058	$ 20,536	$ 20,536
Acquired Goodwill	0	33,522	0
Impairment	0	0	0
End of Year	$ 54,058	$ 54,058	$ 20,536

Business Combinations, Goodw115

Business Combinations, Goodwill and Intangible Assets (Schedule of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Gross Amount	$ 17,282	$ 17,073
Accumulated Amortization	(15,180)	(14,238)
Core Banking | Core Deposit Intangible
Business Acquisition [Line Items]
Gross Amount	11,617	11,617
Accumulated Amortization	(9,694)	(8,782)
Core Banking | Branch Acquisition Intangible
Business Acquisition [Line Items]
Gross Amount	257	257
Accumulated Amortization	(257)	(257)
Insurance | Customer List
Business Acquisition [Line Items]
Gross Amount	5,408	5,199
Accumulated Amortization	$ (5,229)	$ (5,199)

Business Combinations, Goodw116

Business Combinations, Goodwill and Intangible Assets (Estimated Amortization Expense) (Details) $ in Thousands	Dec. 31, 2017USD ($)
Estimated amortization expense for each of the next five years is as follows:
2,018	$ 753
2,019	564
2,020	383
2,021	229
2,022	$ 114

Other Comprehensive Income (117

Other Comprehensive Income (Loss) (Schedule of Other Comprehensive Income Components) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ 330,267	$ 252,348	$ 228,824
Other Comprehensive Income (Loss) Before Reclassification	4,635	(8,934)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	(382)	(1,282)
Comprehensive Income (Loss)	4,253	(10,216)
ASU 2018-02 Adoption	(469)
Ending Balance	364,571	330,267	252,348
Unrealized Gains and Losses on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(6,312)	3,890
Other Comprehensive Income (Loss) Before Reclassification	4,778	(8,916)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	(387)	(1,286)
Comprehensive Income (Loss)	4,391	(10,202)
ASU 2018-02 Adoption	(414)
Ending Balance	(2,335)	(6,312)	3,890
Postretirement Benefit Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(92)	(78)
Other Comprehensive Income (Loss) Before Reclassification	(143)	(18)
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss)	5	4
Comprehensive Income (Loss)	(138)	(14)
ASU 2018-02 Adoption	(55)
Ending Balance	(285)	(92)	(78)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(6,404)	3,812	2,890
Ending Balance	$ (2,620)	$ (6,404)	$ 3,812

Other Comprehensive Income (118

Other Comprehensive Income (Loss) (Schedule of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense									$ (11,534)	$ (13,946)	$ (11,606)
Net Income	$ 11,621	$ 9,660	$ 9,839	$ 9,556	$ 10,065	$ 10,185	$ 9,788	$ 5,146	40,676	35,184	30,064
Salaries and Employee Benefits									(46,642)	(43,961)	(35,042)
Total Reclassifications for the Period									382	1,282
Unrealized Gains and Losses on Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total Reclassifications for the Period									387	1,286
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total Reclassifications for the Period									382	1,282	468
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gains and Losses on Available-for-Sale Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Gain (Loss) on Securities									596	1,979	725
Income Tax Expense									(209)	(693)	(254)
Net Income									387	1,286	471
Reclassification out of Accumulated Other Comprehensive Income | Amortization of Post Retirement Plan Items Actuarial Gains (Losses) | Postretirement Medical and Life Benefit Plan
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income Tax Expense									3	2	2
Net Income									(5)	(4)	(3)
Salaries and Employee Benefits									$ (8)	$ (6)	$ (5)

Quarterly Financial Data (Un119

Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Interest Income	$ 28,610	$ 27,986	$ 27,401	$ 27,033	$ 27,101	$ 26,734	$ 26,850	$ 22,680	$ 111,030		$ 103,365		$ 81,620
Net Interest Income	25,454	24,917	24,813	24,725	24,889	24,560	24,671	20,784	99,909		94,904		75,552
Net Income	$ 11,621	$ 9,660	$ 9,839	$ 9,556	$ 10,065	$ 10,185	$ 9,788	$ 5,146	$ 40,676		$ 35,184		$ 30,064
Basic Earnings per Share (in USD per share)	$ 0.51	$ 0.42	$ 0.43	$ 0.42	$ 0.44	$ 0.45	$ 0.43	$ 0.25	$ 1.77	[1],[2]	$ 1.57	[1],[2]	$ 1.51	[1],[2]
Diluted Earnings per Share (in USD per share)	$ 0.51	$ 0.42	$ 0.43	$ 0.42	$ 0.44	$ 0.45	$ 0.43	$ 0.25	$ 1.77	[1],[2]	$ 1.57	[1],[2]	$ 1.51	[1],[2]
[1]	Per share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017.
[2]	Share and per share data has been adjusted to reflect a 3-for-2 stock split on April 21, 2017.

Subsequent Events (Details)

Subsequent Events (Details) - Scenario, Forecast - Subsequent Event - MainSource Bank $ in Millions	6 Months Ended
	Jun. 30, 2018USD ($)office
Subsequent Event [Line Items]
Purchase price, percentage of certain checking and other demand withdrawal accounts	8.00%
Purchase price, percentage of balances of governmental accounts with public funds, excluding time deposits	4.50%
Purchase price, percentage of balances of money market and saving deposits, excluding governmental accounts with public funds	4.50%
Period adjustment for consideration transferred following closing date	6 months
Core Deposit Intangible
Subsequent Event [Line Items]
Expected premium to be paid for deposits under the purchase agreement | $	$ 8
INDIANA
Subsequent Event [Line Items]
Number of banking offices | office	5
Columbus, Indiana
Subsequent Event [Line Items]
Number of banking offices | office	4
Deposits acquired | $	$ 160
Loans acquired | $	$ 134
Greensburg, Indiana
Subsequent Event [Line Items]
Number of banking offices | office	1