Horizon Bancorp (HBNC) 10-K 28 Feb 20 2019 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Feb. 27, 2020	Jun. 28, 2019
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity Registrant Name	HORIZON BANCORP INC /IN/
Entity Central Index Key	0000706129
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Trading Symbol	HBNC
Entity Common Stock, Shares Outstanding		44,882,894
Entity Public Float			$ 633.4
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Document Transition Report	false
Title of 12(b) Security	Common stock
Security Exchange Name	NASDAQ
Entity File Number	000-10792
Entity Incorporation, State or Country Code	IN
Entity Tax Identification Number	35-1562417
Entity Address, Address Line One	515 Franklin Street
Entity Address, City or Town	Michigan City
Entity Address, State or Province	IN
Entity Address, Postal Zip Code	46360
City Area Code	219
Local Phone Number	879-0211
Document Annual Report	true

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 98,831	$ 58,492
Interest-earning time deposits	8,455	15,744
Investment securities, available for sale	834,776	600,348
Investment securities, held to maturity (fair value of $215,147 and $208,273)	207,899	210,112
Loans held for sale	4,088	1,038
Loans, net of allowance for loan losses of $17,667 and $17,820	3,619,174	2,995,512
Premises and equipment, net	92,209	74,331
Federal Home Loan Bank stock	22,447	18,073
Goodwill	151,238	119,880
Other intangible assets	26,679	10,390
Interest receivable	18,828	14,239
Cash value of life insurance	95,577	88,062
Other assets	66,628	40,467
Total assets	5,246,829	4,246,688
Liabilities
Non-interest bearing	709,760	642,129
Interest bearing	3,221,242	2,497,247
Total deposits	3,931,002	3,139,376
Borrowings	549,741	550,384
Subordinated debentures	56,311	37,837
Interest payable	3,062	2,031
Other liabilities	50,690	25,068
Total liabilities	4,590,806	3,754,696
Commitments and contingent liabilities
Stockholders' Equity
Preferred stock, Authorized, 1,000,000 shares, Issued 0 shares
Common stock, no par value, Authorized 99,000,000 shares Issued 45,000,840 and 38,400,476 shares, Outstanding 44,975,771 and 38,375,407 shares
Additional paid-in capital	379,853	276,101
Retained earnings	269,738	224,035
Accumulated other comprehensive income (loss)	6,432	(8,144)
Total stockholders' equity	656,023	491,992
Total liabilities and stockholders' equity	$ 5,246,829	$ 4,246,688

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Investment securities, held to maturity fair value	$ 215,147	$ 208,273
Allowance for loan losses	$ 17,667	$ 17,820
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	99,000,000	99,000,000
Common stock, shares issued	45,000,840	38,400,476
Common stock, shares outstanding	44,975,771	38,375,407

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest Income
Loans receivable	$ 183,631	$ 147,478	$ 112,329
Investment securities
Taxable	12,606	10,621	9,086
Tax exempt	12,095	8,069	7,068
Total interest income	208,332	166,168	128,483
Interest Expense
Deposits	33,690	18,225	7,901
Borrowed funds	10,672	11,009	6,178
Subordinated debentures	3,179	2,365	2,304
Total interest expense	47,541	31,599	16,383
Net Interest Income	160,791	134,569	112,100
Provision for loan losses	1,976	2,906	2,470
Net Interest Income after Provision for Loan Losses	158,815	131,663	109,630
Non-interest Income
Service charges on deposit accounts	9,959	7,762	6,383
Wire transfer fees	653	612	658
Interchange fees	7,655	5,715	5,104
Fiduciary activities	8,580	7,827	7,894
Gains (losses) on sale of investment securities (includes $(75), $(443) and $38 for the years ended December 31, 2019, 2018 and 2017, respectively, related to accumulated other comprehensive earnings reclassificiations)	(75)	(443)	38
Gain on sale of mortgage loans	9,208	6,613	7,906
Mortgage servicing income net of impairment	1,914	2,120	1,583
Increase in cash value of bank owned life insurance	2,190	1,912	1,797
Death benefit on bank owned life insurance	580	154
Other income	2,394	2,141	1,773
Total non-interest income	43,058	34,413	33,136
Non-interest Expense
Salaries and employee benefits	65,206	56,623	51,375
Net occupancy expenses	12,157	10,482	9,535
Data processing	8,480	6,816	5,914
Professional fees	1,946	1,926	2,490
Outside services and consultants	8,152	5,271	7,018
Loan expense	8,633	6,341	4,970
FDIC insurance expense	252	1,444	1,046
Other losses	740	665	368
Other expense	16,466	12,948	12,097
Total non-interest expense	122,032	102,516	94,813
Income Before Income Taxes	79,841	63,560	47,953
Income tax expense (includes $(16), $(93) and $13 for the years ended December 31, 2019, 2018 and 2017, respectively, related to income tax expense (benefit) from reclassification items)	13,303	10,443	14,836
Net Income Available to Common Shareholders	$ 66,538	$ 53,117	$ 33,117
Basic Earnings Per Share	$ 1.53	$ 1.39	$ 0.96
Diluted Earnings Per Share	$ 1.53	$ 1.38	$ 0.95

Consolidated Statements of In_2

Consolidated Statements of Income (Parenthetical) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Accumulated other comprehensive earnings reclassifications	$ (75,000)	$ (443,000)	$ 38,000
Income tax expense from reclassification	$ (16,000)	$ (93,000)	$ 13,000

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 66,538	$ 53,117	$ 33,117
Change in fair value of derivative instruments:
Change in fair value of derivative instruments for the period	(2,680)	(32)	1,404
Income tax effect	563	7	(491)
Changes from derivative instruments	(2,117)	(25)	913
Change in securities:
Unrealized appreciation (depreciation) for the period on AFS securities	21,173	(5,067)	2,110
Amortization from transfer of securities from available for sale to held to maturity securities	(117)	(190)	(256)
Reclassification adjustment for securities (gains) losses realized in income	75	443	(38)
Income tax effect	(4,438)	1,012	(636)
Unrealized gains (losses) on securities	16,693	(3,802)	1,180
Other Comprehensive Income (Loss), Net of Tax	14,576	(3,827)	2,093
Comprehensive Income	$ 81,114	$ 49,290	$ 35,210

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($)	Total	Lafayette Community Bancorp [Member]	Wolverine Bancorp Inc [Member]	Salin Bancshares Inc [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member]Lafayette Community Bancorp [Member]	Additional Paid-in Capital [Member]Wolverine Bancorp Inc [Member]	Additional Paid-in Capital [Member]Salin Bancshares Inc [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balances at Dec. 31, 2016	$ 340,855,000				$ 182,326,000				$ 164,173,000	$ (5,644,000)
Net income	33,117,000								33,117,000
Other comprehensive income (loss), net of tax	2,093,000									2,093,000
Amortization of unearned compensation	135,000				135,000
Exercise of stock options	1,604,000				1,604,000
Stock option expense	325,000				325,000
Stock issued from acquisition		$ 28,558,000	$ 62,111,000			$ 28,558,000	$ 62,111,000
Cash dividends on preferred stock	(11,720,000)								(11,720,000)
Ending Balances at Dec. 31, 2017	457,078,000				275,059,000				185,570,000	(3,551,000)
Net income	53,117,000								53,117,000
Other comprehensive income (loss), net of tax	(3,827,000)									(3,827,000)
Amortization of unearned compensation	169,000				169,000
Exercise of stock options	493,000				493,000
Stock option expense	251,000				251,000
Stock issued stock plans	129,000				129,000
Cash dividends on common stock	(15,418,000)								(15,418,000)
Reclassification of tax adjustment on accumulated other comprehensive loss									766,000	(766,000)
Ending Balances at Dec. 31, 2018	491,992,000				276,101,000				224,035,000	(8,144,000)
Net income	66,538,000								66,538,000
Other comprehensive income (loss), net of tax	14,576,000									14,576,000
Amortization of unearned compensation	705,000				705,000
Exercise of stock options	236,000				236,000
Stock option expense	215,000				215,000
Stock issued stock plans	1,469,000				1,469,000
Stock issued from acquisition				$ 102,722,000				$ 102,722,000
Stock Repurchased During Period, Value	(1,595,000)				(1,595,000)
Cash dividends on common stock	(20,835,000)								(20,835,000)
Ending Balances at Dec. 31, 2019	$ 656,023,000				$ 379,853,000				$ 269,738,000	$ 6,432,000

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash dividends on common stock, per share	$ 0.46	$ 0.40	$ 0.33

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities
Net income	$ 66,538,000	$ 53,117,000	$ 33,117,000
Items not requiring (providing) cash
Provision for loan losses	1,976,000	2,906,000	2,470,000
Depreciation and amortization	9,688,000	6,813,000	5,936,000
Share based compensation	215,000	251,000	325,000
Mortgage servicing rights, net impairment	192,000	(60,000)	80,000
Premium amortization on securities, net	5,929,000	5,798,000	6,024,000
Loss (gain) on sale of investment securities	75,000	443,000	(38,000)
Gain on sale of mortgage loans	(9,208,000)	(6,613,000)	(7,906,000)
Proceeds from sales of loans	275,809,000	197,492,000	231,410,000
Loans originated for sale	(269,651,000)	(188,823,000)	(218,511,000)
Change in cash value life insurance	(2,190,000)	(1,912,000)	(1,797,000)
Death benefit on bank owned life insurance	580,000	154,000
Loss (gain) on other real estate owned	(126,000)	(209,000)	(4,000)
Net change in:
Interest receivable	(2,101,000)	(1,180,000)	(2,591,000)
Interest payable	205,000	1,145,000	152,000
Other assets	97,629,000	2,460,000	6,173,000
Other liabilities	(608,000)	658,000	(5,776,000)
Net cash provided by operating activities	174,952,000	72,440,000	49,064,000
Investing Activities
Purchases of securities available for sale	(425,879,000)	(214,706,000)	(149,376,000)
Proceeds from sales, maturities, calls and principal repayments of securities available for sale	248,422,000	123,377,000	85,587,000
Purchases of securities held to maturity		(28,374,000)	(31,794,000)
Proceeds from maturities of securities held to maturity	8,384,000	8,301,000	13,376,000
Net change in interest-earning time deposits	7,289,000	717,000	950,000
Change in Federal Reserve and FHLB stock	(803,000)	32,000	8,987,000
Net change in loans	(59,420,000)	(182,637,000)	(251,821,000)
Proceeds on the sale of OREO and repossessed assets	4,744,000	3,258,000	4,238,000
Change in premises and equipment, net	(4,612,000)	(3,434,000)	(2,689,000)
Purchases of bank owned life insurance		(10,450,000)
Gain on remeasurement of equity interest in Lafayette	(530,000)
Repurchase of outstanding stock	(1,595,000)
Net cash provided by (used in) investing activities	(94,725,000)	(303,916,000)	(278,924,000)
Net change in:
Deposits	50,282,000	258,373,000	(13,360,000)
Borrowings	(71,040,000)	(13,589,000)	259,895,000
Proceeds from issuance of stock	1,705,000	622,000	1,604,000
Dividends paid on common stock	(20,835,000)	(15,418,000)	(11,720,000)
Net cash provided by (used in) financing activities	(39,888,000)	229,988,000	236,419,000
Net Change in Cash and Cash Equivalents	40,339,000	(1,488,000)	6,559,000
Cash and Cash Equivalents, Beginning of Period	58,492,000	59,980,000	53,421,000
Cash and Cash Equivalents, End of Period	98,831,000	58,492,000	59,980,000
Additional Supplemental Information
Interest paid	46,510,000	30,454,000	15,969,000
Income taxes paid	13,219,000	6,819,000	10,350,000
Transfer of loans to other real estate and repossessed assets	2,700,000	$ 3,005,000	2,411,000
Transfer of premises to other real estate	1,705,000
Right-of-use assets exchanged for lease obligations	3,411,000
Sale of securities available for sale not yet settled	6,303,000
Single Branch of First Farmers Bank & Trust Co [Member]
Investing Activities
Net cash received in acquisition			11,000,000
Lafayette Community Bancorp [Member]
Investing Activities
Net cash received in acquisition			20,425,000
Gain on remeasurement of equity interest in Lafayette			(530,000)
Wolverine Bancorp Inc [Member]
Investing Activities
Net cash received in acquisition			$ 12,723,000
Salin Bank And Trust Company [Member]
Investing Activities
Net cash received in acquisition	$ 128,745,000

Nature of Operations and Summar

Nature of Operations and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations and Summary of Significant Accounting Policies	Note 1 - Nature of Operations and Summary of Significant Accounting Policies Nature of Business The Bank is a full-service commercial bank offering a broad range of commercial and retail banking and other services incident to banking along with a trust department that offers corporate and individual trust and agency services and investment management services. The Bank maintains 74 full service offices. The Bank has wholly owned direct and indirect subsidiaries: Horizon Investments, Inc. (“Horizon Investments”), Horizon Properties, Inc. (“Horizon Properties”), Horizon Insurance Services, Inc. (“Horizon Insurance”) and Horizon Grantor Trust. Horizon Investments manages the investment portfolio of the Bank. Horizon Properties manages the real estate investment trust. Horizon Insurance is used by the Company’s Wealth Management to sell certain insurance products. Horizon Grantor Trust holds title to certain company owned life insurance policies. Horizon conducts no business except that incident to its ownership of the subsidiaries. Horizon formed Horizon Bancorp Capital Trust II in 2004 (“Trust II”) and Horizon Bancorp Capital Trust III in 2006 (“Trust III”) for the purpose of participating in pooled trust preferred securities offerings. The Company assumed additional debentures as the result of the following acquisitions: Alliance Financial Corporation in 2005, which formed Alliance Financial Statutory Trust I (“Alliance Trust”); American Trust & Savings Bank in 2010, which formed Am Tru Statutory Trust I (“Am Tru Trust”); Heartland Bancshares, Inc. in 2013, which formed Heartland (IN) Statutory Trust II (“Heartland Trust”); LaPorte Bancorp, Inc. in 2016, which acquired City Savings Statutory Trust I (“City Savings Trust”) in 2007; and Salin Bancshares, Inc. in 2003, which formed Salin Statutory Trust I (“Salin Trust”). See Note 1 6 Basis of Reporting Use of Estimates Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan losses, valuation of other real estate owned, goodwill and intangible assets, mortgage servicing rights, other-than-temporary impairments and fair values of financial instruments. Cash and Cash Equivalents Fair Value Measurements As defined in codification, fair value is the price to sell an asset or transfer a liability in an orderly transaction between market participants. It represents an exit price at the measurement date. Market participants are buyers and sellers, who are independent, knowledgeable, and willing and able to transact in the principal (or most advantageous) market for the asset or liability being measured. Current market conditions, including imbalances between supply and demand, are considered in determining fair value. Horizon values its assets and liabilities in the principal market where it sells the particular asset or transfers the liability with the greatest volume and level of activity. In the absence of a principal market, the valuation is based on the most advantageous market for the asset or liability (i.e., the market where the asset could be sold or the liability transferred at a price that maximizes the amount to be received for the asset or minimizes the amount to be paid to transfer the liability). In measuring the fair value of an asset, Horizon assumes the highest and best use of the asset by a market participant to maximize the value of the asset, and does not consider the intended use of the asset. When measuring the fair value of a liability, Horizon assumes that the nonperformance risk associated with the liability is the same before and after the transfer. Nonperformance risk is the risk that an obligation will not be satisfied and encompasses not only Horizon’s own credit risk (i.e., the risk that Horizon will fail to meet its obligation), but also other risks such as settlement risk. Horizon considers the effect of its own credit risk on the fair value for any period in which fair value is measured. There are three acceptable valuation techniques that can be used to measure fair value: the market approach, the income approach and the cost approach. Selection of the appropriate technique for valuing a particular asset or liability takes into consideration the exit market, the nature of the asset or liability being valued, and how a market participant would value the same asset or liability. Ultimately, determination of the appropriate valuation method requires significant judgment, and sufficient knowledge and expertise are required to apply the valuation techniques. Valuation inputs refer to the assumptions market participants would use in pricing a given asset or liability using one of the three valuation techniques. Inputs can be observable or unobservable. Observable inputs are those assumptions which market participants would use in pricing the particular asset or liability. These inputs are based on market data and are obtained from a source independent of Horizon. Unobservable inputs are assumptions based on Horizon’s own information or estimate of assumptions used by market participants in pricing the asset or liability. Unobservable inputs are based on the best and most current information available on the measurement date. All inputs, whether observable or unobservable, are ranked in accordance with a prescribed fair value hierarchy which gives the highest ranking to quoted prices (unadjusted) in active markets for identical assets or liabilities (Level 1) and the lowest ranking to unobservable inputs (Level 3). Fair values for assets or liabilities classified as Level 2 are based on one or a combination of the following factors: (i) quoted prices for similar assets; (ii) observable inputs for the asset or liability, such as interest rates or yield curves; or (iii) inputs derived principally from or corroborated by observable market data. The level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the fair value measurement in its entirety. The Company considers an input to be significant if it drives 10% or more of the total fair value of a particular asset or liability. Assets and liabilities are considered to be fair valued on a recurring basis if fair value is measured regularly (i.e., daily, weekly, monthly or quarterly). Recurring valuation occurs at a minimum on the measurement date. Assets and liabilities are considered to be fair valued on a nonrecurring basis if the fair value measurement of the instrument does not necessarily result in a change in the amount recorded on the balance sheet. Generally, nonrecurring valuation is the result of the application of other accounting pronouncements which require assets or liabilities to be assessed for impairment or recorded at the lower of cost or fair value. The fair value of assets or liabilities transferred in or out of Level 3 is measured on the transfer date, with any additional changes in fair value subsequent to the transfer considered to be realized or unrealized gains or losses. Investment Securities Available for Sale Investment Securities Held to Maturity Loans Held for Sale Interest and Fees on Loans Concentrations of Credit Risk n cent ral s c Mortgage Warehouse Loans The transaction does not qualify as a sale under ASC 860, Transfers and Servicing and therefore is accounted for as a secured borrowing with pledge of collateral pursuant to the agreement with the mortgage company. When the individual loan is sold to the end investor by the mortgage company, the proceeds from the sale of the loan are received by Horizon and used to pay off the loan balance with Horizon along with any accrued interest and any related fees. The remaining balance from the sale is forwarded to the mortgage company. These individual loans typically are sold by the mortgage company within 30 days and are seldom held more than 90 days. Interest income is accrued during this period and collected at the time each loan is sold. Fee income for each loan sold is collected when the loan is sold and no costs are deferred due to the term between each loan funding and related payoff, which is typically less than 30 days. Based on the agreements with each mortgage company, at any time a mortgage company can reacquire from Horizon its outstanding loan balance on an individual mortgage and regain possession of the original note. Horizon also has the option to request that the mortgage company reacquire an individual mortgage. Should this occur, Horizon would return the original note and reassign the assignment of the mortgage to the mortgage company. Also, in the event that the end investor would not be able to honor the sales commitment and the mortgage company would not be able to reacquire its loan on an individual mortgage, Horizon would be able to exercise its rights under the agreement. Allowance for Loan Losses The general allowance is calculated by applying loss factors to pools of outstanding loans. Loss factors are based on historical loss experience and may be adjusted for significant factors that, in management’s judgment, affect the collectability of the portfolio as of the evaluation date. Specific allowances are established in cases where management has identified conditions or circumstances related to a credit that management believes indicate the probability that a loss will be incurred in excess of the amount determined by the application of the formula allowance. The qualitative allowance is based upon management’s evaluation of various conditions, the effects of which are not directly measured in the determination of the general and specific allowances. The evaluation of the inherent loss with respect to these conditions is subject to a higher degree of uncertainty because they are not identified with specific credits. The conditions evaluated in connection with the qualitative allowance may include factors such as local, regional and national economic conditions and forecasts, concentrations of credit and changes in the composition of the portfolio. Loan Impairment non-accrual charged-off Loans are considered impaired if the borrower does not exhibit the ability to pay or the full principal or interest payments are not expected or made in accordance with the original terms of the loan. Impaired loans are measured and carried at the lower of cost or the present value of expected future cash flows discounted at the loan’s effective interest rate, at the loan’s observable market price or at the fair value of the collateral if the loan is collateral dependent. Smaller balance homogenous loans are evaluated for impairment in the aggregate. Such loans include residential first mortgage loans secured by one to four family residences, residential construction loans and automobile, home equity and second mortgages. Commercial loans and mortgage loans secured by other properties are evaluated individually for impairment. Loans Acquired in Business Combinations past-due 310-30) , including loan prepayment considerations, of the acquired loans. For purposes of applying FASB ASC 310-30, loans acquired in business combinations are aggregated into pools of loans with common risk characteristics. Acquired loans not accounted for under ASC 310-30 are accounted for under ASC 310-20, which allows the fair value adjustment to be accreted to income over the remaining life of the loans. The expected cash flows of the acquired loan pools in excess of the fair values recorded is referred to as the accretable yield and is recognized in interest income over the remaining estimated lives of the loan pools. The Company continues to evaluate the fair value of the loans including cash flows expected to be collected. Increases in the Company’s cash flow expectation are recognized as increases to the accretable yield while decreases are recognized as impairments through the allowance for loan losses. Performing loans acquired (FASB ASC 310-20) Premises and Equipment Federal Reserve and Federal Home Loan Bank of Indianapolis (FHLBI) Stock Mortgage Servicing Rights 860-50), 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. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. These variables change from quarter to quarter as market conditions and projected interest rates change, and may have an adverse impact on the value of the mortgage servicing right and may result in a reduction to noninterest income. Each class of separately recognized servicing assets subsequently measured using the amortization method are evaluated and measured for impairment. Impairment is determined by stratifying rights into tranches based on predominant characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance for an individual tranche, to the extent that fair value is less than the carrying amount of the servicing assets for that tranche. The valuation allowance is adjusted to reflect changes in the measurement of impairment after the initial measurement of impairment. Changes in valuation allowances are reported with mortgage servicing income net of impairment on the income statement. Fair value in excess of the carrying amount of servicing assets for that stratum is not recognized. Servicing fee income is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income. Intangible Assets Bank Owned Life Insurance (BOLI) Income Taxes Income Taxes Uncertain tax positions are recognized if it is more likely than not, based on the technical merits, that the tax position will be realized or sustained upon examination. The term more likely than not means a likelihood of more than 50 percent; the terms examined and upon examination also include resolution of the related appeals or litigation processes, if any. A tax position that meets the more- likely-than-not more-likely-than-not The Company recognizes interest and penalties on income taxes as a component of income tax expense. The Company files consolidated income tax returns with its subsidiaries. Trust Assets and Income Transfer of Financial Assets Earnings per Common Share Years Ended December 31 2019 2018 2017 Basic earnings per share Net income $ 66,538 $ 53,117 $ 33,117 Weighted average common shares outstanding (1) 43,493,316 38,347,059 34,553,736 Basic earnings per share $ 1.53 $ 1.39 $ 0.96 Diluted earnings per share Net income available to common shareholders $ 66,538 $ 53,117 $ 33,117 Weighted average common shares outstanding (1) 43,493,316 38,347,059 34,553,736 Effect of dilutive securities: Restricted stock 23,006 36,185 46,981 Stock options 81,273 111,987 159,721 Weighted average common shares outstanding 43,597,595 38,495,231 34,760,438 $ 1.53 $ 1.38 $ 0.95 (1) Adjusted for 3:2 stock split on June 15, 2018 There were 120,341, 102,138 and zero shares for the twelve months ended December 31, 2019, 2018 and 2017, respectively, which were not included in the computation of diluted earnings per share because they were non-dilutive. On May 15, 2018, the Board of Directors of the Company approved a three-for-two three-for-two three-for-two On July 16, 2019, the Board of Directors of the Company authorized a stock repurchase program for up to 2,250,000 shares of Horizon’s issued and outstanding common stock, no par value. As of December 31, 2019, Horizon had repurchased a total of 99,407 shares at an average price per share of $16.04. Dividend Restrictions 2 Consolidated Statements of Cash Flows Comprehensive Income Share-Based Compensation 3 12-month Derivative Financial Instruments non-interest non-interest Reclassifications Adoption of New Accounting Standards FASB ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities The FASB has issued ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities 2016-01, FASB ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income The FASB has issued ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income in this ASU is permitted, including adoption in any interim period, (1) for public business entities for reporting periods for which financial statements have not yet been issued and (2) for all other entities for reporting periods for which financial statements have not yet been made available for issuance. The amendments in this ASU should be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. At December 31, 2017, the Company had approximately $766,000 stranded tax effects included in AOCI and reclassified to retained earnings at January 1, 2018. FASB ASU No. 2016-02, Leases (Topic 842) The FASB has issued ASU No. 2016-02, Leases (Topic 842). right-of-use As of January 1, 2019, the Company recorded a right-of-use FASB ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities The FASB has issued ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. not-for-profit The new guidance makes targeted improvements to existing U.S. GAAP by: • Requiring 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; • Requiring public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; • Requiring separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; • Eliminating the requirement to disclose the fair value of financial instruments measured at amortized cost for organizations that are not public business entities; • Eliminating the 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 on the balance sheet; and • Requiring a reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk (also referred to as “own credit”) when the organization has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. The new guidance is effective for public companies for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The new guidance permits early adoption of the own credit provision. In addition, the new guidance permits early adoption of the provision that exempts private companies and not-for-profit Revenue Recognition “Revenue from Contracts with Customers” non-interest • Service charges and fees on deposit accounts – these include general service fees charged for deposit account maintenance and activity and transaction-based fees charged for certain services, such as debit card, wire transfer and overdraft activities. Revenue is recognized when the performance obligation is completed, which is generally after a transaction is completed or monthly for account maintenance services. • Fiduciary activities – this includes periodic fees due from trust and wealth management customers for managing the customers’ financial assets. Fees are charged based on a standard agreement and are recognized as they are earned.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2019
Business Combinations [Abstract]
Acquisitions	Note 2 – Acquisitions Salin Bancshares, Inc. On March 26, 2019, Horizon completed the acquisition of Salin Bancshares, Inc. (“Salin”), an Indiana corporation, and Horizon Bank’s acquisition of Salin Bank and Trust Company (“Salin Bank”), an Indiana commercial bank and wholly-owned subsidiary of Salin, through mergers effective March 26, 2019. Under the terms of the Merger Agreement, shareholders of Salin received 23,907.5 shares of Horizon common stock and $87,417.17 in cash for each outstanding share of Salin common stock. Salin shares outstanding at the closing to be exchanged were 275, and the shares of Horizon common stock issued to Salin shareholders totaled 6,563,697. The Salin shareholders received cash in lieu of fractional shares. Based upon the March 25, 2019 closing price of $15.65 per share of Horizon common stock immediately prior to the effectiveness of the merger the transaction has an implied valuation of approximately $126.7 million. The Company incurred approximately $5.6 million in costs related to the acquisition. These expenses are classified in the non-interest Under the acquisition method of accounting, the total purchase price is allocated to net tangible and intangible assets based on their current estimated fair values on the date of the acquisition. Based on preliminary valuations of the fair value of tangible and intangible assets acquired and liabilities assumed, which are based on estimates and assumptions that are subject to change, the final purchase price for the Salin acquisition is detailed in the following table. Prior to the end of the one-year Contractually required principal and interest at acquisition $ 22,672 Contractual cash flows not expected to be collected (nonaccretable differences) 6,694 Expected cash flows at acquisition 15,978 Interest component of expected cash flows (accretable discount) 735 Fair value of acquired loans accounted for under ASC 310-30 $ 15,243 Estimates of certain loans, those for which specific credit-related deterioration has occurred since origination, are recorded at fair value, reflecting the present value of the amounts expected to be collected. Income recognition of these loans is based on reasonable expectation about the timing and amount of cash flows to be collected. Wolverine Bancorp, Inc. On October 17, 2017, Horizon completed the acquisition of Wolverine Bancorp, Inc., a Maryland corporation (“Wolverine”) and Horizon Bank’s acquisition of Wolverine Bank, a federally chartered savings bank and wholly-owned subsidiary of Wolverine, through mergers effective October 17, 2017. Under the terms of the Merger Agreement, shareholders of Wolverine received 1.5228 shares of Horizon common stock and $14.00 in cash for each outstanding share of Wolverine common stock. Wolverine shares outstanding at the closing to be exchanged were 2,129,331, and the shares of Horizon common stock issued to Wolverine shareholders totaled 3,241,045. Based upon the October 16, 2017 closing price of $19.37 per share of Horizon common stock immediately prior to the effectiveness of the merger, less the consideration used to pay off Wolverine Bancorp’s ESOP loan receivable, the transaction has an implied valuation of approximately $93.8 million. The Company incurred approximately $1.9 million in costs related to the acquisition as of December 31, 2017. These expenses are classified in the non-interest its Under the acquisition method of accounting, the total purchase price is allocated to net tangible and intangible assets based on their current estimated fair values on the date of the acquisition. Based on preliminary valuations of the fair value of tangible and intangible assets acquired and liabilities assumed, which are based on estimates and assumptions that are subject to change, the final purchase price for the Wolverine acquisition is allocated as follows: Assets Liabilities Cash and due from banks $ 44,450 Deposits Non-interest $ 25,221 Loans NOW accounts 8,026 Commercial 276,167 Savings and money market 129,044 Residential mortgage 30,603 Certificates of deposit 94,688 Consumer 3,897 Total deposits 256,979 Total loans 310,667 Premises and equipment, net 2,941 Borrowings 36,970 FRB and FHLB stock 2,700 Interest payable 214 Goodwill 26,827 Other liabilities 6,154 Core deposit intangible 2,024 Interest receivable 584 Other assets 3,897 Total assets purchased $ 394,090 Total liabilities assumed $ 300,317 Common shares issued $ 62,111 Cash paid 31,662 Total purchase price $ 93,773 Of the total purchase price of $93.8 million, $2.0 million has b e The Company acquired various loans in the acquisition that had evidence of deterioration of credit quality since origination and it was probable, at acquisition, that all contractually required payments would not be collected. Loans purchased with evidence of credit deterioration since origination and for which it is probable that all contractually required payments will not be collected are considered to be credit impaired. Evidence of credit quality deterioration as of the purchase date may include information such as past-due non-accrual loan-to-value 310-30) Loans with specific credit-related deterioration, since origination, are recorded at fair value, reflecting the present value of the amounts expected to be collected. Income recognition of these loans is based on reasonable expectation about the timing and amount of cash flows to be collected. The following table details the acquired loans that are accounted for in accordance with ASC 310-30 Contractually required principal and interest at acquisition $ 21,912 Contractual cash flows not expected to be collected (nonaccretable differences) 1,832 Expected cash flows at acquisition 20,080 Interest component of expected cash flows (accretable discount) 2,267 Fair value of acquired loans accounted for under ASC 310-30 $ 17,813 Final estimates of certain loans, those for which specific credit-related deterioration, since origination, are recorded at fair value, reflecting the present value of the amounts expected to be collected. Income recognition of these loans is based on reasonable expectation about the timing and amount of cash flows to be collected. Lafayette Community Bancorp On September 1, 2017, Horizon completed the acquisition of Lafayette Community Bancorp, an Indiana corporation (“Lafayette”) and Horizon Bank’s acquisition of Lafayette Community Bank, a state-chartered bank and wholly-owned subsidiary of Lafayette, through mergers effective September 1, 2017. Under the terms of the Merger Agreement, shareholders of Lafayette received 0.8817 shares of Horizon common stock and $1.73 in cash for each outstanding share of Lafayette common stock. Lafayette shareholders owning fewer than 100 shares of common stock received $17.25 in cash for each common share. Lafayette shares outstanding at the closing to be exchanged were 1,856,679, and the shares of Horizon common stock issued to Lafayette shareholders totaled 1,636,888. Based upon the August 31, 2017 closing price of $17.45 per share of Horizon common stock immediately prior to the effectiveness of the merger, the transaction has an implied valuation of approximately $34.5 million. The Company incurred approximately $1.7 million in costs related to the acquisition as of December 31, 2017. These expenses are classified in the non-interest Horizon held 5% ownership in Lafayette immediately preceding the merger date. In accordance with ASC 805-10 Under the acquisition method of accounting, the total purchase price is allocated to net tangible and intangible assets based on their current estimated fair values on the date of the acquisition. Based on preliminary valuations of the fair value of tangible and intangible assets acquired and liabilities assumed, which are based on assumptions that are subject to change, the purchase price for the Lafayette acquisition is detailed in the following table. Assets Liabilities Cash and due from banks $ 24,846 Deposits Investment securities, available for sale 6 Non-interest $ 34,990 NOW accounts 30,174 Loans Savings and money market 53,663 Commercial 116,258 Certificates of deposit 32,520 Residential mortgage 12,761 Total deposits 151,347 Consumer 5,280 Total loans 134,299 Premises and equipment, net 7,818 Interest payable 42 FHLB stock 395 Other liabilities 990 Goodwill 15,408 Core deposit intangible 2,085 Interest receivable 338 Other assets 1,649 Total assets purchased $ 186,844 Total liabilities assumed $ 152,379 Common shares issued $ 30,044 (1) Cash paid 4,421 Total purchase price $ 34,465 (1) This includes $955,000 of common shares previously held by Horizon. Of the total estimated purchase price of $34.5 million, $2.1 million has been allocated to core deposit intangible. Additionally, $15.4 million has been allocated to goodwill and none of the purchase price is deductible. The core deposit intangible will be amortized over 10 years on a straight-line basis. The Company acquired various loans in the acquisition that had evidence of deterioration of credit quality since origination and it was probable, at acquisition, that all contractually required payments would not be collected. Loans purchased with evidence of credit deterioration since origination and for which it is probable that all contractually required payments will not be collected are considered to be credit impaired. Evidence of credit quality deterioration as of the purchase date may include information such as past-due non-accrual loan-to-value 310-30) Loans with specific credit-related deterioration, since origination, are recorded at fair value, reflecting the present value of the amounts expected to be collected. Income recognition of these loans is based on reasonable expectation about the timing and amount of cash flows to be collected. The following table details an estimate of the acquired loans that are accounted for in accordance with ASC 310-30 Contractually required principal and interest at acquisition $ 6,128 Contractual cash flows not expected to be collected (nonaccretable differences) 1,326 Expected cash flows at acquisition 4,802 Interest component of expected cash flows (accretable discount) 933 Fair value of acquired loans accounted for under ASC 310-30 $ 3,869 Final estimates of certain loans, those for which specific credit-related deterioration, since origination, are recorded at fair value, reflecting the present value of the amounts expected to be collected. Income recognition of these loans is based on reasonable expectation about the timing and amount of cash flows to be collected. Bargersville Branch Purchase On February 3, 2017, Horizon completed the purchase and assumption of certain assets and liabilities of a single branch of First Farmers Bank & Trust Company, in Bargersville, Indiana. Net cash of $11.0 million was received in the transaction, representing the deposit balances assumed at closing, net of amounts paid for loans acquired in the transaction of $3.4 million and a 3.0% premium on deposits. Customer deposit balances were recorded at $14.8 million and a core deposit intangible of $452,000 was recorded in the transaction, which will be amortized over 10 years on a straight line basis. There was no goodwill generated in the transaction. The results of operations of Salin, Wolverine and Lafayette have been included in the Company’s consolidated financial statements since the acquisition dates. The following schedule includes pro-forma Years Ended December 31 2019 2018 2017 Summary of Operations: Net Interest Income $ 168,693 $ 157,194 $ 153,376 Provision for Loan Losses 2,276 3,706 3,438 Net Interest Income after Provision for Loan Losses 166,417 153,488 149,938 Non-interest 43,472 39,918 42,456 Non-interest 134,446 124,944 138,752 Income before Income Taxes 75,443 68,462 53,642 Income Tax Expense 13,246 10,216 15,978 Net Income $ 62,197 $ 58,246 $ 37,664 Basic Earnings per Share $ 1.43 $ 1.52 $ 1.09 Diluted Earnings per Share $ 1.43 $ 1.51 $ 1.08 The pro-forma The pro-forma

Cash Equivalents

Cash Equivalents	12 Months Ended
	Dec. 31, 2019
Cash and Cash Equivalents [Abstract]
Cash Equivalents	Note 3 – Cash Equivalents The Company considers all liquid investments with original maturities of three months or less to be cash equivalents. At December 31, 2019 and 2018, cash equivalents consisted primarily of money market accounts with brokers and certificates of deposit. At December 31, 2019, the Company’s cash accounts exceeded federally insured limits by approximately $22.2 million. Approximately $6.7 million of this amount was held by either the Federal Reserve Bank or the Federal Home Loan Bank of Indianapolis, which is not federally insured.

Securities

Securities	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	Note 4 – Securities The fair value of securities is as follows: December 31, 2019 Amortized Gross Gross Fair Available for sale U.S. Treasury and federal agencies $ 1,415 $ — $ (2 ) $ 1,413 State and municipal 396,931 11,288 (2,451 ) 405,768 Federal agency collateralized mortgage obligations 267,272 2,543 (563 ) 269,252 Federal agency mortgage-backed pools 145,623 1,207 (258 ) 146,572 Corporate notes 10,848 923 — 11,771 Total available for sale investment securities $ 822,089 $ 15,961 $ (3,274 ) $ 834,776 Held to maturity State and municipal $ 190,767 $ 7,129 $ (54 ) $ 197,842 Federal agency collateralized mortgage obligations 4,560 13 (5 ) 4,568 Federal agency mortgage-backed pools 12,572 194 (29 ) 12,737 Total held to maturity investment securities $ 207,899 $ 7,336 $ (88 ) $ 215,147 December 31, 2018 Amortized Gross Gross Fair Available for sale U.S. Treasury and federal agencies $ 16,815 $ 1 $ (208 ) $ 16,608 State and municipal 210,386 1,495 (2,578 ) 209,303 Federal agency collateralized mortgage obligations 187,563 625 (3,185 ) 185,003 Federal agency mortgage-backed pools 183,479 80 (4,823 ) 178,736 Corporate notes 10,666 107 (75 ) 10,698 Total available for sale investment securities $ 608,909 $ 2,308 $ (10,869 ) $ 600,348 Held to maturity State and municipal $ 191,269 $ 1,773 $ (3,366 ) $ 189,676 Federal agency collateralized mortgage obligations 5,144 6 (120 ) 5,030 Federal agency mortgage-backed pools 13,699 74 (206 ) 13,567 Total held to maturity investment securities $ 210,112 $ 1,853 $ (3,692 ) $ 208,273 Based on evaluation of available evidence, including recent changes in market interest rates, credit rating information, and information obtained from regulatory filings, management believes the declines in fair value for these securities are temporary. While these securities are held in the available for sale portfolio and held-to-maturity, Should the impairment of any of these securities become other than temporary, the cost basis of the investment will be reduced and the resulting loss recognized in net income in the period the other-than-temporary impairment is identified. At December 31, 2019, no individual investment security had an unrealized loss that was determined to be other-than-temporary. The unrealized losses on the Company’s investments in securities of state and municipal governmental agencies, U.S. Treasury and federal agencies, federal agency collateralized mortgage obligations, and federal agency mortgage-backed pools were caused by interest rate volatility and not a decline in credit quality. The contractual terms of those investments do not permit the issuer to settle the securities at a price less than the amortized cost basis of the investments. The Company expects to recover the amortized cost basis over the term of the securities. Because the Company does not intend to sell the investments and it is not likely that the Company will be required to sell the investments before recovery of their amortized cost basis, which may be at maturity, the Company did not consider those investments to be other-than-temporarily impaired at December 31, 2019. The Company elected to transfer 319 available-for-sale held-to-maturity 320-10-55-24, pre-tax The amortized cost and fair value of securities available for sale and held-to-maturity December 31, 2019 December 31, 2018 Amortized Fair Amortized Fair Available for sale Within one year $ 37,386 $ 37,321 $ 20,532 $ 20,448 One to five years 41,230 41,293 42,476 41,705 Five to ten years 117,004 122,145 107,839 107,107 After ten years 213,574 218,193 67,020 67,349 409,194 418,952 237,867 236,609 Federal agency collateralized mortgage obligations 267,272 269,252 187,563 185,003 Federal agency mortgage-backed pools 145,623 146,572 183,479 178,736 Total available for sale investment securities $ 822,089 $ 834,776 $ 608,909 $ 600,348 Held to maturity Within one year $ 7,811 $ 7,874 $ 70 $ 70 One to five years 56,037 57,048 48,732 49,324 Five to ten years 94,756 98,480 101,809 101,533 After ten years 32,163 34,440 40,658 38,749 190,767 197,842 191,269 189,676 Federal agency collateralized mortgage obligations 4,560 4,568 5,144 5,030 Federal agency mortgage-backed pools 12,572 12,737 13,699 13,567 Total held to maturity investment securities $ 207,899 $ 215,147 $ 210,112 $ 208,273 The following table shows the gross unrealized losses and the fair value of the Company’s investments, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position. December 31, 2019 Less than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized Investment Securities U.S. Treasury and federal agencies $ 1,413 $ (2 ) $ — $ — $ 1,413 $ (2 ) State and municipal 129,942 (2,374 ) 6,279 (131 ) 136,221 (2,505 ) Federal agency collateralized mortgage obligations 68,043 (308 ) 23,301 (260 ) 91,344 (568 ) Federal agency mortgage-backed pools 24,740 (104 ) 37,822 (183 ) 62,562 (287 ) Total temporarily impaired securities $ 224,138 $ (2,788 ) $ 67,402 $ (574 ) $ 291,540 $ (3,362 ) December 31, 2018 Less than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized Investment Securities U.S. Treasury and federal agencies $ — $ — $ 9,707 $ (208 ) $ 9,707 $ (208 ) State and municipal 75,163 (1,628 ) 106,335 (4,316 ) 181,498 (5,944 ) Federal agency collateralized mortgage obligations 6,450 (25 ) 106,257 (3,280 ) 112,707 (3,305 ) Federal agency mortgage-backed pools 5,739 (39 ) 175,865 (4,990 ) 181,604 (5,029 ) Corporate notes 5,263 (75 ) — — 5,263 (75 ) Total temporarily impaired securities $ 92,615 $ (1,767 ) $ 398,164 $ (12,794 ) $ 490,779 $ (14,561 ) U.S. Treasury, federal agency, state and municipal The unrealized losses on the Company’s investments in U.S. Treasury, federal agency and state and municipals were caused by interest rate changes. The contractual terms of those investments do not permit the issuer to settle the securities at a price less than the amortized cost bases of the investments. Because the Company does not intend to sell the investments and it is not more likely than not the Company will be required to sell the investments before recovery of their amortized cost bases, which may be maturity, the Company does not consider those investments to be other-than-temporarily impaired at December 31, 2019. Federal agency mortgage-backed pools and collateralized mortgage obligations The unrealized losses on the Company’s investment in federal agency mortgage backed pools and collateralized mortgage obligations securities were caused by interest rate changes. The Company expects to recover the amortized cost basis over the term of the securities. Because the decline in market value is attributable to changes in interest rates and not credit quality, and because the Company does not intend to sell the investments and it is not more likely than not the Company will be required to sell the investments before recovery of their amortized cost bases, which may be maturity, the Company does not consider those investments to be other-than-temporarily impaired at December 31, 2019. Information regarding security proceeds, gross gains and gross losses are presented below. Years Ended December 31 2019 2018 2017 Sales of securities available for sale Proceeds $ 98,425 $ 38,519 $ 5,490 Gross gains 168 37 151 Gross losses (243 ) (480 ) (113 ) The tax effect of the proceeds from the sale of securities available for sale was $(16,000), $(93,000) and $13,000 for the years ended December 31, 2019, 2018 and 2017, respectively. The Company pledges securities to secure retail and corporate repurchase agreements to the Federal Reserve for borrowing availability and as settlements for the fair value of swap agreements. At December 31, 2019, the Company had pledged $106.8 million of fair value or $106.4 million of amortized cost, in securities as collateral for $90.9 million in repurchase agreements, $98.7 million of fair value or $94.7 million of amortized cost, in securities as collateral for borrowing availability at the Federal Reserve with $0 current outstanding borrowings and $33.4 million of fair value or $33.1 million of amortized cost, in securities as collateral for $14.8 million in settlements on the fair value of swap agreements.

Loans

Loans	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Loans	Note 5 Loans December 31 December 31 2019 2018 Commercial Working capital and equipment $ 938,317 $ 804,083 Real estate, including agriculture 978,891 834,037 Tax exempt 63,571 48,975 Other 65,872 34,495 Total 2,046,651 1,721,590 Real estate 1-4 762,571 659,754 Other 8,146 8,387 Total 770,717 668,141 Consumer Auto 362,729 327,413 Recreation 16,262 13,975 Real estate/home improvement 43,585 39,587 Home equity 237,979 163,209 Unsecured 7,286 4,043 Other 1,339 1,254 Total 669,180 549,481 Mortgage warehouse 150,293 74,120 Total loans 3,636,841 3,013,332 Allowance for loan losses (17,667 ) (17,820 ) Loans, net $ 3,619,174 $ 2,995,512 Commercial Commercial loans are primarily based on the identified cash flows of the borrower and secondarily on the underlying collateral provided by the borrower. The cash flows of borrowers, however, may not be as expected, and the collateral securing these loans may fluctuate in value. Most commercial loans are secured by the assets being financed or other business assets such as accounts receivable or inventory and may incorporate a personal guarantee; however, some short-term loans may be made on an unsecured basis. In the case of loans secured by accounts receivable, the availability of funds for the repayment of these loans may be substantially dependent on the ability of the borrower to collect amounts due from its customers. Commercial real estate loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Commercial real estate lending typically involves larger loan principal amounts and the repayment of these loans is generally dependent on the successful operation of the property securing the loan or the business conducted on the property securing the loan. Commercial real estate loans may be more adversely affected by conditions in the real estate markets, the general economy or fluctuations in interest rates. The properties securing the Company’s commercial real estate portfolio are diverse in terms of property type, and are monitored for concentrations of credit. Management monitors and evaluates commercial real estate loans based on collateral, cash flow and risk grade criteria. As a general rule, the Company avoids financing single purpose projects unless other underwriting factors are present to help mitigate risk. In addition, management tracks the level of owner-occupied commercial real estate loans versus non-owner Real Estate and Consumer With respect to residential loans that are secured by 1-4 loan-to-value 1-4 Mortgage Warehousing Horizon’s mortgage warehouse lending has specific mortgage companies as customers of Horizon Bank. Individual mortgage loans originated by these mortgage companies are funded as a secured borrowing with a pledge of collateral under Horizon’s agreement with the mortgage company. Each mortgage loan funded by Horizon undergoes an underwriting review by Horizon to the end investor guidelines and is assigned to Horizon until the loan is sold to the secondary market by the mortgage company. In addition, Horizon takes possession of each original note and forwards such note to the end investor once the mortgage company has sold the loan. At the time a loan is transferred to the secondary market, the mortgage company reacquires the loan under its option within the agreement. Due to the reacquire feature contained in the agreement, the transaction does not qualify as a sale and therefore is accounted for as a secured borrowing with a pledge of collateral pursuant to the agreement with the mortgage company. When the individual loan is sold to the end investor by the mortgage company, the proceeds from the sale of the loan are received by Horizon and used to pay off the loan balance with Horizon along with any accrued interest and any related fees. The remaining balance from the sale is forwarded to the mortgage company. These individual loans typically are sold by the mortgage company within 30 days and are seldom held more than 90 days. Interest income is accrued during this period and collected at the time each loan is sold. Fee income for each loan sold is collected when the loan is sold, and no costs are deferred due to the term between each loan funding and related payoff, which is typically less than 30 days. Based on the agreements with each mortgage company, at any time a mortgage company can reacquire from Horizon its outstanding loan balance on an individual mortgage and regain possession of the original note. Horizon also has the option to request that the mortgage company reacquire an individual mortgage. Should this occur, Horizon would return the original note and reassign the assignment of the mortgage to the mortgage company. Also, in the event that the end investor would not be able to honor the purchase commitment and the mortgage company would not be able to reacquire its loan on an individual mortgage, Horizon would be able to exercise its rights under the agreement. The following table shows the recorded investment of individual loan categories. December 31, 2019 Loan Interest Deferred (Fees) Recorded Owner occupied real estate $ 519,577 $ 784 $ (148 ) $ 520,213 Non-owner 973,331 1,752 (763 ) 974,320 Residential spec homes 12,925 15 (2 ) 12,938 Development & spec land 35,954 101 (14 ) 36,041 Commercial and industrial 505,859 4,600 (68 ) 510,391 Total commercial 2,047,646 7,252 (995 ) 2,053,903 Residential mortgage 751,019 2,245 12 753,276 Residential construction 19,686 40 — 19,726 Mortgage warehouse 150,293 242 — 150,535 Total real estate 920,998 2,527 12 923,537 Direct installment 41,079 148 678 41,905 Indirect installment 348,658 911 — 349,569 Home equity 276,215 1,304 2,550 280,069 Total consumer 665,952 2,363 3,228 671,543 Total loans 3,634,596 12,142 2,245 3,648,983 Allowance for loan losses (17,667 ) — — (17,667 ) Net loans $ 3,616,929 $ 12,142 $ 2,245 $ 3,631,316 December 31, 2018 Loan Interest Deferred (Fees) Recorded Owner occupied real estate $ 444,834 $ 931 $ (130 ) $ 445,635 Non-owner 852,855 1,436 (747 ) 853,544 Residential spec homes 5,195 13 — 5,208 Development & spec land 50,706 153 (15 ) 50,844 Commercial and industrial 368,962 3,063 (70 ) 371,955 Total commercial 1,722,552 5,596 (962 ) 1,727,186 Residential mortgage 644,094 1,861 17 645,972 Residential construction 24,030 42 — 24,072 Mortgage warehouse 74,120 132 — 74,252 Total real estate 742,244 2,035 17 744,296 Direct installment 35,103 108 593 35,804 Indirect installment 314,177 738 — 314,915 Home equity 197,494 968 2,114 200,576 Total consumer 546,774 1,814 2,707 551,295 Total loans 3,011,570 9,445 1,762 3,022,777 Allowance for loan losses (17,820 ) — — (17,820 ) Net loans $ 2,993,750 $ 9,445 $ 1,762 $ 3,004,957

Accounting for Certain Loans Ac

Accounting for Certain Loans Acquired in a Transfer	12 Months Ended
	Dec. 31, 2019
Transfers and Servicing [Abstract]
Accounting for Certain Loans Acquired in a Transfer	Note 6 – Accounting for Certain Loans Acquired in a Transfer The Company acquired loans in acquisitions with evidence of deterioration of credit quality since origination and it was probable, at acquisition, that all contractually required payments would not be collected. Loans purchased with evidence of credit deterioration since origination and for which it is probable that all contractually required payments will not be collected are considered to be credit impaired. Evidence of credit quality deterioration as of the purchase date may include information such as past-due non-accrual loan-to-value 310-30) The carrying amounts of those loans included in the balance sheet amounts of loans receivable are as follows: December 31, 2019 Commercial Real Estate Consumer Outstanding Allowance Carrying Heartland $ 197 $ 99 $ — $ 296 $ — $ 296 Summit 88 473 — 561 — 561 Peoples 229 35 — 264 — 264 Kosciusko 244 131 — 375 — 375 LaPorte 353 793 20 1,166 — 1,166 Lafayette 1,867 — — 1,867 — 1,867 Wolverine 2,289 — — 2,289 — 2,289 Salin 4,938 1,912 962 7,812 133 7,679 Total $ 10,205 $ 3,443 $ 982 $ 14,630 $ 133 $ 14,497 December 31, 2018 Commercial Real Estate Consumer Outstanding Allowance Carrying Heartland $ 232 $ 175 $ — $ 407 $ — $ 407 Summit 323 555 — 878 — 878 Peoples 270 58 — 328 — 328 Kosciusko 746 155 — 901 — 901 LaPorte 753 947 27 1,727 60 1,667 Lafayette 3,080 — — 3,080 — 3,080 Wolverine 7,841 — — 7,841 — 7,841 Total $ 13,245 $ 1,890 $ 27 $ 15,162 $ 60 $ 15,102 Accretable yield, or income expected to be collected are as follows: Twelve Months Ended December 31, 2019 Beginning Additions Accretion Reclassification Disposals Ending Heartland $ 174 $ — $ (32 ) $ — $ — $ 142 Summit 42 — (9 ) — (11 ) 22 Kosciusko 300 — (63 ) — (2 ) 235 LaPorte 829 — (111 ) — 4 722 Lafayette 609 — (126 ) — (193 ) 290 Wolverine 698 — (272 ) — (306 ) 120 Salin — 2,002 (590 ) — (37 ) 1,375 Total $ 2,652 $ 2,002 $ (1,203 ) $ — $ (545 ) $ 2,906 Twelve Months Ended December 31, 2018 Beginning Additions Accretion Reclassification Disposals Ending Heartland $ 452 $ — $ (85 ) $ — $ (193 ) $ 174 Summit 147 — (54 ) — (51 ) 42 Kosciusko 386 — (78 ) — (8 ) 300 LaPorte 980 — (144 ) — (7 ) 829 Lafayette 933 — (275 ) — (49 ) 609 Wolverine 2,267 — (812 ) — (757 ) 698 Total $ 5,165 $ — $ (1,448 ) $ — $ (1,065 ) $ 2,652 During the years ended December 31, 2019 and 2018, the Company increased the allowance for loan losses by a charge to the income statement of $133,000 and $60,000, respectively. No allowance for loan losses were reversed for the years ended December 31, 2019 and 2018.

Allowance for Loan Losses

Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Allowance for Loan Losses	Note 7 – Allowance for Loan Losses The historical loss experience is determined by portfolio segment and is based on the actual loss history experienced by the Company over the prior one Years Ended December 31 2019 2018 2017 Balance at beginning of the period $ 17,820 $ 16,394 $ 14,837 Loans charged-off: Commercial Owner occupied real estate 41 109 12 Non-owner 64 — 75 Residential spec homes 3 — — Development & spec land — — 1 Commercial and industrial 755 364 541 Total commercial 863 473 629 Real estate Residential mortgage 93 76 89 Residential construction — — — Mortgage warehouse — — — Total real estate 93 76 89 Consumer Direct installment 208 154 137 Indirect installment 1,785 1,673 1,193 Home equity 319 176 205 Total consumer 2,312 2,003 1,535 Total loans charged-off 3,268 2,552 2,253 Recoveries of loans previously charged-off: Commercial Owner occupied real estate — 55 8 Non-owner 15 33 32 Residential spec homes 5 8 8 Development & spec land — — — Commercial and industrial 179 80 250 Total commercial 199 176 298 Real estate Residential mortgage 46 27 44 Residential construction — — — Mortgage warehouse — — — Total real estate 46 27 44 Consumer Direct installment 97 53 501 Indirect installment 661 505 497 Home equity 136 311 — Total consumer 894 869 998 Total loan recoveries 1,139 1,072 1,340 Net loans charged-off 2,129 1,480 913 Provision charged to operating expense Commercial 2,165 1,699 2,164 Real estate (635 ) (487 ) (81 ) Consumer 446 1,694 387 Total provision charged to operating expense 1,976 2,906 2,470 Balance at the end of the period $ 17,667 $ 17,820 $ 16,394 Certain loans are individually evaluated for impairment, and the Company’s general practice is to proactively charge down impaired loans to the fair value, which is the appraised value less estimated selling costs, of the underlying collateral. Consistent with regulatory guidance, charge-offs on all loan segments are taken when specific loans, or portions thereof, are considered uncollectible. The Company’s policy is to promptly charge these loans off in the period the uncollectible loss is reasonably determined. For all loan portfolio segments except 1-4 charges-off charge-off The Company charges-off 1-4 1-4 charges-off open-end The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment analysis: December 31, 2019 Commercial Real Estate Mortgage Consumer Total Allowance For Loan Losses Ending allowance balance attributable to loans: Individually evaluated for impairment $ 541 $ — $ — $ — $ 541 Collectively evaluated for impairment 11,455 923 1,077 3,671 17,126 Loans acquired with deteriorated credit quality — — — — — Total ending allowance balance $ 11,996 $ 923 $ 1,077 $ 3,671 $ 17,667 Loans: Individually evaluated for impairment $ 7,347 $ — $ — $ — $ 7,347 Collectively evaluated for impairment 2,040,299 770,705 150,293 665,952 3,627,249 Loans acquired with deteriorated credit quality — — — — — Total ending loans balance $ 2,047,646 $ 770,705 $ 150,293 $ 665,952 $ 3,634,596 December 31, 2018 Commercial Real Estate Mortgage Consumer Total Allowance For Loan Losses Ending allowance balance attributable to loans: Individually evaluated for impairment $ 1,035 $ — $ — $ — $ 1,035 Collectively evaluated for impairment 9,460 1,676 1,006 4,643 16,785 Loans acquired with deteriorated credit quality — — — — — Total ending allowance balance $ 10,495 $ 1,676 $ 1,006 $ 4,643 $ 17,820 Loans: Individually evaluated for impairment $ 6,696 $ — $ — $ — $ 6,696 Collectively evaluated for impairment 1,715,856 668,124 74,120 546,774 3,004,874 Loans acquired with deteriorated credit quality — — — — — Total ending loans balance $ 1,722,552 $ 668,124 $ 74,120 $ 546,774 $ 3,011,570

Non-performing Assets and Impai

Non-performing Assets and Impaired Loans	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Non-performing Assets and Impaired Loans	Note 8 – Non-performing The following table presents the nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured (“TDRs”) by class of loans: December 31, 2019 Non-accrual Loans Past Non-peforming Performing Total Non-performing Commercial Owner occupied real estate $ 2,424 $ — $ 629 $ 139 $ 3,192 Non-owner 682 — 374 — 1,056 Residential spec homes — — — — — Development & spec land 73 — — — 73 Commercial and industrial 1,603 — 78 1,345 3,026 Total commercial 4,782 — 1,081 1,484 7,347 Real estate Residential mortgage 7,614 1 708 1,561 9,884 Residential construction — — — — — Mortgage warehouse — — — — — Total real estate 7,614 1 708 1,561 9,884 Consumer Direct installment 30 5 — — 35 Indirect installment 1,234 135 — — 1,369 Home equity 2,019 5 217 309 2,550 Total consumer 3,283 145 217 309 3,954 Total $ 15,679 $ 146 $ 2,006 $ 3,354 $ 21,185 December 31, 2018 Non-accrual Loans Past Non-peforming Performing Total Non-performing Commercial Owner occupied real estate $ 3,531 $ 208 $ — $ 109 $ 3,848 Non-owner 554 — 492 — 1,046 Residential spec homes — — — — — Development & spec land 68 — — — 68 Commercial and industrial 1,941 — — — 1,941 Total commercial 6,094 208 492 109 6,903 Real estate Residential mortgage 2,846 180 423 1,558 5,007 Residential construction — — — — — Mortgage warehouse — — — — — Total real estate 2,846 180 423 1,558 5,007 Consumer Direct installment 35 — — — 35 Indirect installment 916 173 — — 1,089 Home equity 1,657 7 142 335 2,141 Total consumer 2,608 180 142 335 3,265 Total $ 11,548 $ 568 $ 1,057 $ 2,002 $ 15,175 Included in the $15.7 million of non-accrual non-performing From time to time, the Bank obtains information that may lead management to believe that the collection of payments may be doubtful on a particular loan. In recognition of this, it is management’s policy to convert the loan from an “earning asset” to a non-accruing non-accrual Executive Vice President and Chief Commercial Banking Officer and/or the Executive Vice President and Chief Operations Officer must review all loans placed on non-accrual status. Subsequent payments on non-accrual Non-accrual less than six months before returning a non-accrual A loan becomes impaired when, based on current information, it is probable that a creditor will be unable to collect all amounts due according to the contractual terms of the loan agreement. When a loan is classified as impaired, the degree of impairment must be recognized by estimating future cash flows from the debtor. The present value of these cash flows is computed at a discount rate based on the interest rate contained in the loan agreement. However, if a particular loan has a determinable market value for its collateral, the creditor may use that value. Also, if the loan is secured and considered collateral dependent, the creditor may use the fair value of the collateral. Interest income on loans individually classified as impaired is recognized on a cash basis after all past due and current principal payments have been made. Smaller-balance, homogeneous loans are evaluated for impairment in total. Such loans include residential first mortgage loans secured by 1–4 family residences, residential construction loans, automobile, home equity, second mortgage loans and mortgage warehouse loans. Commercial loans and mortgage loans secured by other properties are evaluated individually for impairment. When analysis of borrower operating results and financial condition indicate that underlying cash flows of a borrower’s business are not adequate to meet its debt service requirements, the loan is evaluated for impairment. Often this is associated with a delay or shortfall in payments of 30 days or more. Loans are generally moved to non-accrual Loans for which it is probable that the Company will not collect all principal and interest due according to contractual terms, including TDRs, are measured for impairment. Allowable methods for determining the amount of impairment include the three methods described above. The Company’s TDRs are considered impaired loans and included in the allowance methodology using the guidance for impaired loans. At December 31, 2019, the type of concessions the Company has made on restructured loans has been temporary rate reductions and/or reductions in monthly payments and there have been no restructured loans with modified recorded balances. Any modification to a loan that is a concession and is not in the normal course of lending is considered a restructured loan. A restructured loan is returned to accruing status after six consecutive payments but is still reported as TDR unless the loan bears interest at a market rate. As of December 31, 2019, the Company had $5.4 million in TDRs and $3.4 million were performing according to the restructured terms and no TDRs were returned to accrual status during 2019. There was $133,000 of specific reserves allocated to TDRs at December 31, 2019 based on the collateral deficiencies. The following table presents commercial loans individually evaluated for impairment by class of loans: December 31, 2019 Twelve Months Ended Unpaid Recorded Allowance for Loan Loss Average Cash/Accrual With no recorded allowance Commercial Owner occupied real estate $ 3,192 $ 3,193 $ — $ 3,608 $ 246 Non-owner 937 937 — 2,810 98 Residential spec homes — — — — — Development & spec land 73 73 — 158 — Commercial and industrial 1,859 1,861 — 2,464 100 Total commercial 6,061 6,064 — 9,040 444 With an allowance recorded Commercial Owner occupied real estate — — — — — Non-owner 119 119 25 130 — Residential spec homes — — — — — Development & spec land — — — — — Commercial and industrial 1,167 1,168 516 1,225 46 Total commercial 1,286 1,287 541 1,355 46 Total $ 7,347 $ 7,351 $ 541 $ 10,395 $ 490 December 31, 2018 Twelve Months Ended Unpaid Recorded Allowance for Average Cash/Accrual With no recorded allowance Commercial Owner occupied real estate $ 2,814 $ 2,815 $ — $ 3,168 $ 77 Non-owner 860 860 — 1,096 12 Residential spec homes — — — — — Development & spec land 68 68 — 71 — Commercial and industrial 1,226 1,226 — 1,119 21 Total commercial 4,968 4,969 — 5,454 110 With an allowance recorded Commercial Owner occupied real estate 827 827 145 864 — Non-owner 186 186 30 180 4 Residential spec homes — — — — — Development & spec land — — — — — Commercial and industrial 715 715 860 870 14 Total commercial 1,728 1,728 1,035 1,914 18 Total $ 6,696 $ 6,697 $ 1,035 $ 7,368 $ 128 December 31, 2017 Twelve Months Ended Unpaid Recorded Allowance for Average Cash/Accrual With no recorded allowance Commercial Owner occupied real estate $ 1,255 $ 1,270 $ — $ 1,168 $ 4 Non-owner 3,123 3,139 — 850 7 Residential spec homes — — — — — Development & spec land 176 176 — 233 4 Commercial and industrial 1,656 1,656 — 1,445 25 Total commercial 6,210 6,241 — 3,696 40 With an allowance recorded Commercial Owner occupied real estate 704 704 78 59 33 Non-owner 227 227 106 19 13 Residential spec homes — — — — — Development & spec land — — — — — Commercial and industrial — — — — — Total commercial 931 931 184 78 46 Total $ 7,141 $ 7,172 $ 184 $ 3,774 $ 86 The following table presents the payment status by class of loans: December 31, 2019 Current 30-59 60-89 90 Days or Non-accrual Non-peforming Total Past Due Non-accrual Total Commercial Owner occupied real estate $ 515,604 $ 920 $ — $ — $ 3,053 $ 3,973 $ 519,577 Non-owner 972,195 80 — — 1,056 1,136 973,331 Residential spec homes 12,925 — — — — — 12,925 Development & spec land 35,881 — — — 73 73 35,954 Commercial and industrial 503,348 819 11 — 1,681 2,511 505,859 Total commercial 2,039,953 1,819 11 — 5,863 7,693 2,047,646 Real estate Residential mortgage 740,712 1,984 — 1 8,322 10,307 751,019 Residential construction 19,686 — — — — — 19,686 Mortgage warehouse 150,293 — — — — — 150,293 Total real estate 910,691 1,984 — 1 8,322 10,307 920,998 Consumer Direct installment 40,864 175 5 5 30 215 41,079 Indirect installment 344,478 2,407 404 135 1,234 4,180 348,658 Home equity 273,050 904 20 5 2,236 3,165 276,215 Total consumer 658,392 3,486 429 145 3,500 7,560 665,952 Total $ 3,609,036 $ 7,289 $ 440 $ 146 $ 17,685 $ 25,560 $ 3,634,596 Percentage of total loans 99.30 % 0.20 % 0.01 % 0.00 % 0.49 % 0.70 % 100.00 % December 31, 2018 Current 30-59 60-89 90 Days or Non-accrual Non-peforming Total Past Due Non-accrual Total Commercial Owner occupied real estate $ 439,542 $ 537 $ 1,016 $ 208 $ 3,531 $ 5,292 $ 444,834 Non-owner 851,587 203 19 — 1,046 1,268 852,855 Residential spec homes 4,703 492 — — — 492 5,195 Development & spec land 50,638 — — — 68 68 50,706 Commercial and industrial 365,817 487 717 — 1,941 3,145 368,962 Total commercial 1,712,287 1,719 1,752 208 6,586 10,265 1,722,552 Real estate Residential mortgage 639,458 1,131 56 180 3,269 4,636 644,094 Residential construction 24,030 — — — — — 24,030 Mortgage warehouse 74,120 — — — — — 74,120 Total real estate 737,608 1,131 56 180 3,269 4,636 742,244 Consumer Direct installment 34,957 93 18 — 35 146 35,103 Indirect installment 311,494 1,396 198 173 916 2,683 314,177 Home equity 194,890 761 37 7 1,799 2,604 197,494 Total consumer 541,341 2,250 253 180 2,750 5,433 546,774 Total $ 2,991,236 $ 5,100 $ 2,061 $ 568 $ 12,605 $ 20,334 $ 3,011,570 Percentage of total loans 99.32 % 0.17 % 0.07 % 0.02 % 0.42 % 0.68 % 100.00 % The entire balance of a loan is considered delinquent if the minimum payment contractually required to be made is not received by the specified due date. Horizon Bank’s processes for determining credit quality differ slightly depending on whether a new loan or a renewed loan is being underwritten, or whether an existing loan is being re-evaluated • For new and renewed commercial loans, the Bank’s Credit Department, which acts independently of the loan officer, assigns the credit quality grade to the loan. Loan grades for loans with an aggregate credit exposure that exceeds the authorities in the respective regions (ranging from $1,500,000 to $3,500,000) are validated by the Loan Committee, which is chaired by the Executive Vice President and Chief Commercial Banking Officer (EVP/CCBO). • Commercial loan officers are responsible for reviewing their loan portfolios and reporting any adverse material change to the EVP/CCBO or Loan Committee. When circumstances warrant a change in the credit quality grade, loan officers are required to notify the EVP/CCBO and the Credit Department of the change in the loan grade. Downgrades are accepted immediately by the EVP/CCBO, however, lenders must present their factual information to either the Loan Committee or the EVP/CCBO when recommending an upgrade. • The EVP/CCBO, or a designee, meets periodically with loan officers to discuss the status of past-due • Monthly, senior management meets as members of the Watch Committee, which reviews all of the past due, classified, and impaired loans and the relative trends of these assets. This committee also reviews the actions taken by management regarding foreclosure mitigation, loan extensions, troubled debt restructures, other real estate owned and personal property repossessions. The information reviewed in this meeting acts as a precursor for developing management’s analysis of the adequacy of the Allowance for Loan and Lease Losses. For residential real estate and consumer loans, Horizon uses a grading system based on delinquency. Loans that are 90 days or more past due, on non-accrual, non-accrual. Horizon Bank employs a nine-grade rating system to determine the credit quality of commercial loans. The first five grades represent acceptable quality, and the last four grades mirror the criticized and classified grades used by the bank regulatory agencies (special mention, substandard, doubtful, and loss). The loan grade definitions are detailed below. Risk Grade 1: Excellent (Pass) Loans secured by liquid collateral, such as certificates of deposit, reputable bank letters of credit, or other cash equivalents; loans that are guaranteed or otherwise backed by the full faith and credit of the United States government or an agency thereof, such as the Small Business Administration; or loans to any publicly held company with a current long-term debt rating of A or better. Risk Grade 2: Good (Pass) Loans to businesses that have strong financial statements containing an unqualified opinion from a CPA firm and at least three consecutive years of profits; loans supported by unaudited financial statements containing strong balance sheets, five consecutive years of profits, a five-year satisfactory relationship with the Bank, and key balance sheet and income statement trends that are either stable or positive; loans secured by publicly traded marketable securities where there is no impediment to liquidation; loans to individuals backed by liquid personal assets and unblemished credit history; or loans to publicly held companies with current long-term debt ratings of Baa or better. Risk Grade 3: Satisfactory (Pass) Loans supported by financial statements (audited or unaudited) that indicate average or slightly below average risk and having some deficiency or vulnerability to changing economic conditions; loans with some weakness but offsetting features of other support are readily available; loans that are meeting the terms of repayment, but which may be susceptible to deterioration if adverse factors are encountered. Loans may be graded Satisfactory when there is no recent information on which to base a current risk evaluation and the following conditions apply: • At inception, the loan was properly underwritten, did not • At inception, the loan was secured with collateral possessing a loan value adequate to protect the Bank from loss. • The loan has exhibited two or more years of satisfactory repayment with a reasonable reduction of the principal balance. • During the period that the loan has been outstanding, there has been no evidence of any credit weakness. Some examples of weakness include slow payment, lack of cooperation by the borrower, breach of loan covenants, or the borrower is in an industry known to be experiencing problems. If any of these credit weaknesses is observed, a lower risk grade may be warranted. Risk Grade 4 Satisfactory/Monitored: Loans in this category are considered to be of acceptable credit quality, but contain greater credit risk than Satisfactory loans. Borrower displays acceptable liquidity, leverage, and earnings performance within the Bank’s minimum underwriting guidelines. The level of risk is acceptable but conditioned on the proper level of loan officer supervision. Loans that normally fall into this grade include acquisition, construction and development loans and income producing properties that have not reached stabilization. Risk Grade 4W Management Watch: Loans in this category are considered to be of acceptable quality, but with above normal risk. Borrower displays potential indicators of weakness in the primary source of repayment resulting in a higher reliance on secondary sources of repayment. Balance sheet may exhibit weak liquidity and/or high leverage. There is inconsistent earnings performance without the ability to sustain adverse economic conditions. Borrower may be operating in a declining industry or the property type, as for a commercial real estate loan, may be high risk or in decline. These loans require an increased level of loan officer supervision and monitoring to assure that any deterioration is addressed in a timely fashion. Risk Grade 5: Special Mention Loans which possess some credit deficiency or potential weakness which deserves close attention. Such loans pose an unwarranted financial risk that, if not corrected, could weaken the loan by adversely impacting the future repayment ability of the borrower. The key distinctions of a Special Mention classification are that (1) it is indicative of an unwarranted level of risk and (2) weaknesses are considered “potential,” not “defined,” impairments to the primary source of repayment. These loans may be to borrowers with adverse trends in financial performance, collateral value and/or marketability, or balance sheet strength. Risk Grade 6: Substandard One or more of the following characteristics may be exhibited in loans classified Substandard: • Loans which possess a defined credit weakness. The likelihood that a loan will be paid from the primary source of repayment is uncertain. Financial deterioration is under way and very close attention is warranted to ensure that the loan is collected without loss. • Loans are inadequately protected by the current net worth and paying capacity of the obligor. • The primary source of repayment is gone, and the Bank is forced to rely on a secondary source of repayment, such as collateral liquidation or guarantees. • Loans have a distinct possibility that the Bank will sustain some loss if deficiencies are not corrected. • Unusual courses of action are needed to maintain a high probability of repayment. • The borrower is not generating enough cash flow to repay loan principal; however, it continues to make interest payments. • The lender is forced into a subordinated or unsecured position due to flaws in documentation. • Loans have been restructured so that payment schedules, terms, and collateral represent concessions to the borrower when compared to the normal loan terms. • The lender is seriously contemplating foreclosure or legal action due to the apparent deterioration in the loan. • There is a significant deterioration in market conditions to which the borrower is highly vulnerable. Risk Grade 7: Doubtful One or more of the following characteristics may be present in loans classified Doubtful: • Loans have all of the weaknesses of those classified as Substandard. However, based on existing conditions, these weaknesses make full collection of principal highly improbable. • The primary source of repayment is gone, and there is considerable doubt as to the quality of the secondary source of repayment. • The possibility of loss is high but because of certain important pending factors which may strengthen the loan, loss classification is deferred until the exact status of repayment is known. Risk Grade 8: Loss Loans are considered uncollectible and of such little value that continuing to carry them as assets is not feasible. Loans will be classified Loss when it is neither practical nor desirable to defer writing off or reserving all or a portion of a basically worthless asset, even though partial recovery may be possible at some time in the future. The following table presents loans by credit grades. December 31, 2019 Pass Special Substandard Doubtful Total Commercial Owner occupied real estate $ 492,386 $ 8,328 $ 18,863 $ — $ 519,577 Non-owner 957,990 7,824 7,517 — 973,331 Residential spec homes 12,925 — — — 12,925 Development & spec land 35,815 — 139 — 35,954 Commercial and industrial 468,893 18,652 18,314 — 505,859 Total commercial 1,968,009 34,804 44,833 — 2,047,646 Real estate Residential mortgage 741,136 — 9,883 — 751,019 Residential construction 19,686 — — — 19,686 Mortgage warehouse 150,293 — — — 150,293 Total real estate 911,115 — 9,883 — 920,998 Consumer Direct installment 41,044 — 35 — 41,079 Indirect installment 347,289 — 1,369 — 348,658 Home equity 273,665 — 2,550 — 276,215 Total consumer 661,998 — 3,954 — 665,952 Total $ 3,541,122 $ 34,804 $ 58,670 $ — $ 3,634,596 Percentage of total loans 97.43 % 0.96 % 1.61 % 0.00 % 100.00 % December 31, 2018 Pass Special Substandard Doubtful Total Commercial Owner occupied real estate $ 426,887 $ 3,664 $ 14,283 $ — $ 444,834 Non-owner 834,582 9,682 8,591 — 852,855 Residential spec homes 5,195 — — — 5,195 Development & spec land 47,523 3,115 68 — 50,706 Commercial and industrial 354,630 6,591 7,741 — 368,962 Total commercial 1,668,817 23,052 30,683 — 1,722,552 Real estate Residential mortgage 639,267 — 4,827 — 644,094 Residential construction 24,030 — — — 24,030 Mortgage warehouse 74,120 — — — 74,120 Total real estate 737,417 — 4,827 — 742,244 Consumer Direct installment 35,068 — 35 — 35,103 Indirect installment 313,088 — 1,089 — 314,177 Home equity 195,353 — 2,141 — 197,494 Total consumer 543,509 — 3,265 — 546,774 Total $ 2,949,743 $ 23,052 $ 38,775 $ — $ 3,011,570 Percentage of total loans 97.95 % 0.76 % 1.29 % 0.00 % 100.00 %

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Premises and Equipment	Note 9 – Premises and Equipment December 31 December 31 2019 2018 Land $ 27,292 $ 21,604 Buildings and improvements 83,669 69,590 Furniture and equipment 27,482 24,596 Total cost 138,443 115,790 Accumulated depreciation (46,234 ) (41,459 ) Net premises and equipment $ 92,209 $ 74,331

Loan Servicing

Loan Servicing	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Loan Servicing	Note 10 – Loan Servicing Loans serviced for others are not included in the accompanying consolidated balance sheets. The unpaid principal balances of loans serviced for others totaled approximately $1.4 billion and $1.3 billion at December 31, 2019 and 2018. The aggregate fair value of capitalized mortgage servicing rights was approximately $14.4 million, $13.9 million and $12.8 million at December 31, 2019, 2018 and 2017, compared to the carrying values of $14.3 million, $12.3 million and $11.6 million, respectively. The fair value of capitalized mortgage servicing rights was approximately $11.7 million on January 1, 2017. Comparable market values and a valuation model that calculates the present value of future cash flows were used to estimate fair value. For purposes of measuring impairment, risk characteristics including product type, investor type and interest rates, were used to stratify the originated mortgage servicing rights. December 31 December 31 December 31 2019 2018 2017 Mortgage servicing rights Balances, January 1 $ 12,876 $ 12,189 $ 11,681 Servicing rights capitalized 3,547 1,883 2,109 Amortization of servicing rights (1,377 ) (1,196 ) (1,601 ) Balances, December 31 15,046 12,876 12,189 Impairment allowance Balances, January 1 (527 ) (587 ) (507 ) Additions (234 ) (78 ) (85 ) Reductions 42 138 5 Balances, December 31 (719 ) (527 ) (587 ) Mortgage servicing rights, net $ 14,327 $ 12,349 $ 11,602 During 2019, 2018 and 2017 the Bank recorded additional impairment of approximately $192,000, $60,000 and $80,000, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Note 11 – Goodwill and Intangible Assets On March 26, 2019, the Salin acquisition resulted in goodwill of $31.2 million. On October , , the Wolverine acquisition resulted in goodwill of $ million. On September , , the Lafayette acquisition resulted in goodwill of $ million. No impairment loss was recorded in 2019 or 2018. The Company tested goodwill for impairment during 2019 and 2018. In both valuations, the fair value exceeded the Company’s carrying value, therefore, it was concluded goodwill is not impaired. For additional details related to impairment testing, see the “Goodwill and Intangible Assets” section of “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included as Item 7 of this Annual Report on Form 10K. December 31 December 31 2019 2018 Balance, January 1 $ 119,880 $ 119,880 Goodwill acquired 31,358 — Balance, December 31 $ 151,238 $ 119,880 As a result of the acquisition of American Trust & Savings Bank in 2010; Heartland in 2012; Summit in 2014; Peoples in 2015; Kosciusko, LaPorte and CNB in 2016; Lafayette and Wolverine in 2017; and Salin in 2019; the Company has recorded certain amortizable intangible assets related to core deposit intangibles. These core deposit intangibles are being amortized over seven December 31, 2019 December 31, 2018 Gross Carrying Accumulated Gross Carrying Accumulated Amortizable intangible assets Core deposit intangible $ 40,590 $ (13,911 ) $ 20,711 $ (10,321 ) Amortization expense for inta n follows 2020 $ 3,723 2021 3,591 2022 3,516 2023 3,430 2024 3,225 Thereafter 9,194 $ 26,679

Leases

Leases	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Leases	Note 12 – Leases As of January 1, 2019, when the Company adopted ASU 2016-02 right-of-use When the Company adopted the guidance on January 1, 2019, it elected the optional alternative transition method permitted by ASU 2018-11 • The practical expedient package that forgoes: • Reassessment of any expired or existing contracts for a lease • Reassessment of lease classification for expired or existing leases • Reassessment of initial direct costs for existing leases • The hindsight practical expedient to determine lease term and impairment of ROU assets • Other practical expedients regarding combination of lease and non-lease components and the exclusion of short-term leases • The Company did not elect to follow the practical expedients for land easements and the portfolio approach Operating leases relate primarily to bank branches and office space with remaining average lease terms of seven years. The weighted average discount rate utilized to calculate the ROU asset and operating lease liability was approximately 2.57%, which represents the incremental borrowing rate. At inception, the Company recorded a ROU asset and operating lease liability of $3.5 million. At December 31, 2019, a ROU asset of $2.7 million is included in other assets and an operating lease liability of $2.7 million is included in other liabilities. Options to extend a lease were considered in the remaining lease term determination. The lease expense for operating leases was $591,000 for the year ended December 31, 2019. The weighted average remaining life of leases was 6.4 years at December 31, 2019. Future minimum operating lease payments under non-cancellable Year Amount 2020 $ 476 2021 476 2022 504 2023 504 2024 and thereafter 1,105 Total lease payments $ 3,065 Less: Interest (51 ) Present value of lease liabilities $ 3,014

Deposits

Deposits	12 Months Ended
	Dec. 31, 2019
Banking and Thrift [Abstract]
Deposits	Note 13 – Deposits December 31 December 31 2019 2018 Noninterest-bearing demand deposits $ 709,760 $ 642,129 Interest-bearing demand deposits 1,159,296 864,026 Money market (variable rate) 522,382 420,123 Savings deposits 563,952 400,187 Certificates of deposit of $250,000 or more 461,435 371,824 Other certificates and time deposits 514,177 441,087 Total deposits $ 3,931,002 $ 3,139,376 Certificates and other time deposits for both re t Retail Brokered Total 2020 $ 722,672 $ 24,350 $ 747,022 2021 102,449 20,508 122,957 2022 32,925 15,256 48,181 2023 16,527 16,648 33,175 2024 22,995 — 22,995 Thereafter 1,282 — 1,282 $ 898,850 $ 76,762 $ 975,612

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Borrowings	Note 14 – Borrowings December 31 December 31 2019 2018 Federal Home Loan Bank advances, variable and fixed rates ranging from 0.68% to 7.53%, due at various dates through August 20, 2029 $ 390,800 $ 356,579 Securities sold under agreements to repurchase 90,941 52,116 Federal funds purchased 68,000 141,689 Total borrowings $ 549,741 $ 550,384 The Federal Home Loan Bank advances are secured by first and second mortgage loans and mortgage warehouse loans totaling approximately $905.9 million. Advances are subject to restrictions or penalties in the event of prepayment. At December 31, 2019, the Bank had a total of $125.0 million in putable advances. The call dates for these advances range from February 20, 2020 to October 24, 2022 even though maturity dates extend beyond those dates. At December 31, 2019, the Bank had available approximately $517.1 million in credit lines with various money center banks, including the FHLB. Contractual maturities in years ending December 31 are as follows: 2020 $ 276,970 2021 15,102 2022 52,222 2023 183 2024 80,116 Thereafter 125,148 $ 549,741

Repurchase Agreements

Repurchase Agreements	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Repurchase Agreements	Note 15 – Repurchase Agreements Securities sold under agreements to repurchase consist of obligations of the Bank to other parties. The obligations are secured by federal agency collateralized mortgage obligations and federal agency mortgage-backed pools and such collateral is held in safekeeping by third parties. The maximum amount of outstanding agreements at any month end during 2019 and 2018 totaled $97.3 million and $61.4 million and the daily average of such agreements totaled $81.3 million and $51.4 million. The agreements at December 31, 2019 are overnight agreements. The following table shows repurchase agreements accounted for as secured borrowings: December 31, 2019 Remaining Contractual Maturity of the Agreements Overnight Up to one One to three Three to five Five to ten Beyond ten Total Repurchase Agreements and Repurchase Agreements $ 90,941 $ — $ — $ — $ — $ — $ 90,941 Securities pledged for Federal agency collateralized $ 35,537 $ — $ — $ — $ — $ — $ 35,537 Federal agency 71,234 — — — — — 71,234 Total $ 106,771 $ — $ — $ — $ — $ — $ 106,771

Subordinated Debentures

Subordinated Debentures	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Subordinated Debentures	Note 16 – Subordinated Debentures In October of 2004, Horizon formed Horizon Statutory Trust II (“Trust II”), a wholly owned statutory business trust. Trust II sold $10.3 million of Trust Preferred Capital Securities as a participant in a pooled trust preferred securities offering. The proceeds from the sale of the trust preferred securities were used by the trust to purchase an equivalent amount of subordinated debentures from Horizon. The junior subordinated debentures are the sole assets of Trust II and are fully and unconditionally guaranteed by Horizon. The junior subordinated debentures and the trust preferred securities pay interest and dividends on a quarterly basis. The junior subordinated debentures and the securities bear interest at a rate of 90-day In December of 2006, Horizon formed Horizon Bancorp Capital Trust III (“Trust III”), a wholly owned statutory business trust. Trust III sold $12.4 million of Trust Preferred Capital Securities as a participant in a pooled trust preferred securities offering. The proceeds from the sale of the trust preferred securities were used by the trust to purchase an equivalent amount of subordinated debentures from Horizon. The junior subordinated debentures are the sole assets of Trust III and are fully and unconditionally guaranteed by Horizon. The junior subordinated debentures and the trust preferred securities pay interest and dividends on a quarterly basis. The junior subordinated debentures and the securities bear interest at a rate of 90-day ( The Company assumed additional debentures as the result of the acquisition of Alliance Bank Corporation in 2005. In June 2004, Alliance formed Alliance Financial Statutory Trust I a wholly owned business trust (“Alliance Trust”), to sell $5.2 million in trust preferred securities. The proceeds from the sale of the trust preferred securities were used by the trust to purchase an equivalent amount of subordinated debentures from Alliance. The junior subordinated debentures are the sole assets of Alliance Trust and are fully and unconditionally guaranteed by Horizon. The junior subordinated debentures and the trust preferred securities pay interest and dividends on a quarterly basis. The junior subordinated debentures and the securities bear interest at a rate of 90-day June 2034 The Company assumed additional debentures as the result of the American Trust & Savings Bank purchase and assumption in 2010. In March 2004, Am Tru Inc., the holding company for American Trust & Savings Bank, formed Am Tru Statutory Trust I a wholly owned business trust (“Am Tru Trust”), to sell $3.5 million in trust preferred securities. The proceeds from the sale of the trust preferred securities were used by the trust to purchase an equivalent amount of subordinated debentures from Am Tru Inc. The junior subordinated debentures are the sole assets of Am Tru Trust and are fully and unconditionally guaranteed by Horizon. The junior subordinated debentures and the trust preferred securities pay interest and dividends on a quarterly basis. The junior subordinated debentures and the securities bear interest at a rate of 90-day December 2033 The Company assumed additional debentures as the result of the Heartland merger in July 2012. In December 2006, Heartland formed Heartland (IN) Statutory Trust II a wholly owned business trust (“Heartland Trust”), to sell $3.0 million in trust preferred securities. The proceeds from the sale of the trust preferred securities were used by the trust to purchase an equivalent amount of subordinated debentures from Heartland. The junior subordinated debentures are the sole assets of Heartland Trust and are fully and unconditionally guaranteed by Horizon. The junior subordinated debentures and the trust preferred securities pay interest and dividends on a quarterly basis. The junior subordinated debentures and the securities bear interest at a rate of 90-day December 2036 The Company assumed additional debentures as the result of the LaPorte merger in July 2016. In October 2007, LaPorte assumed debentures as the result of its acquisition of City Savings Financial Corporation (“City Savings”). In June 2003, City Savings formed City Savings Statutory Trust I a wholly owned business trust (“City Savings Trust”), to sell $5.0 million in trust preferred securities. The proceeds from the sale of the trust preferred securities were used by the trust to purchase an equivalent amount of subordinated debentures from City Savings. The junior subordinated debentures are the sole assets of City Savings Trust and are fully and unconditionally guaranteed by Horizon. The junior subordinated debentures and the trust preferred securities pay interest and dividends on a quarterly basis. The junior subordinated debentures and the securities bear interest at a rate of 90-day June 2033 The Company assumed additional debentures as the result of the Salin merger in March 2019. In October 2003, Salin Bancshares, Inc. (“Salin”) formed Salin Statutory Trust I (“Salin Trust”), to sell $20.0 million in trust preferred securities. The proceeds from the sale of the trust preferred securities were used by the trust to purchase an equivalent amount of subordinated debentures from Salin. The junior subordinated debentures are the sole assets of Salin Trust and are fully and unconditionally guaranteed by Horizon. The junior subordinated debentures and the securities bear interest at a rate of 90-day October 2033 The Trust Preferred Capital Securities, subject to certain limitations, are included in Tier 1 Capital for regulatory purposes. Dividends on the Trust Preferred Capital Securities are recorded as interest expense.

Employee Stock Ownership Plan

Employee Stock Ownership Plan	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Employee Stock Ownership Plan	Note 17 – Employee Stock Ownership Plan Effective January 1, 2007, Horizon converted its stock bonus plan to an employee stock ownership plan (“ESOP”). Prior to that date, Horizon maintained an employee stock bonus plan that covered substantially all employees. The stock bonus plan was noncontributory, and Horizon made matching contributions of amounts contributed by the employees to the Employee Thrift Plan and discretionary contributions. Prior to the establishment of the employee stock bonus plan, Horizon maintained an ESOP that was terminated in 1999. The prior ESOP accounts of active employees and the discretionary accounts of active employees remain in the new ESOP. The Matching contribution accounts under the stock bonus plan were transferred to the Employee Thrift Plan. The ESOP exists for the benefit of substantially all employees. Contributions to the ESOP are by Horizon and are determined by the Board of Directors at its discretion. The contributions may be made in the form of cash or common stock. Shares are allocated among participants each December 31 on the basis of each participant’s eligible compensation to total eligible compensation. Eligible compensation is limited to $265,000 for each participant. Dividends on shares held by the plan, at the discretion of each participant, may be distributed to an individual participant or left in the plan to purchase additional shares. Total cash contributions and expense recorded for the ESOP was $719,000 in 2019, $750,000 in 2018 and $600,000 in 2017. The ESOP, which is not leveraged, owns a total of 1,344,625 shares of Horizon’s stock or 3.0% of the outstanding shares as of December 31, 2019.

Employee Thrift and Defined Ben

Employee Thrift and Defined Benefit Plan	12 Months Ended
	Dec. 31, 2019
Postemployment Benefits [Abstract]
Employee Thrift and Defined Benefit Plan	Note 18 – Employee Thrift and Defined Benefit Plan The Employee Thrift Plan (“Plan”) provides that all employees of Horizon with the requisite hours of service are eligible for the Plan. The Plan permits voluntary employee contributions and Horizon may make discretionary matching and profit sharing contributions. Each eligible employee is vested according to a schedule based upon years of service. Employee voluntary contributions are vested at all times. The Bank’s expense related to the Plan totaled approximately $1.2 million in 2019, $1.2 million in 2018 and $942,000 in 2017. The Plan owns a total of 741,650 shares of Horizon’s stock or 1.6% of the outstanding shares as of December 31, 2019. The Company acquired a pension fund known as the Pentegra Defined Benefit Plan (“Pentegra Plan”) in the Peoples acquisition. Prior to August 1, 2007, Peoples provided pension benefits for substantially all of its employees through its participation in the Pentegra Plan. Peoples chose to freeze the Pentegra Plan effective August 1, 2007. The trustees of the Financial Institutions Retirement Fund administer the Pentegra Plan, employer identification number 13-5645888 and plan number 333. This plan operates as a multi-employer plan for accounting purposes and as a multiple-employer plan under the Employee Retirement Income Security Act of 1974 and the Internal Revenue Code. There are no collective bargaining agreements in place that require contributions to the Pentegra Plan. The Pentegra Plan is a single plan under Internal Revenue Code 413(c) and, as a result, all of the assets stand behind all of the liabilities. The risks of participating in these multiemployer plans are different from single-employer plans in the following aspects: • Assets contributed to the multiemployer plan by one employer may be used to provide benefits to employees of other participating employers. • If a participating employer stops contributing to the plan, the unfunded obligations of the plan may be borne by the remaining participating employers. • If the Company chooses to stop participating in the multiemployer plan, the Company may be required to pay the plan an amount based on the underfunded status of the plan, referred to as a withdrawal liability. There was no expense to the Company in 2019 and 2018 for this Pentegra Plan. The Company intends on terminating this Pentegra Plan during 20 20

Income Tax

Income Tax	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Tax	Note 19 – Income Tax December 31 December 31 December 31 2019 2018 2017 Income tax expense Currently payable Federal $ 11,143 $ 9,166 $ 12,079 State 140 — — Deferred Federal 1,787 1,277 331 State 233 — — Revaluation of deferred tax assets — — 2,426 Total income tax expense $ 13,303 $ 10,443 $ 14,836 Reconciliation of federal statutory to actual tax expense Federal statutory income tax at 21% in 201 9 2 018 35% in 2017 $ 16,767 $ 13,348 $ 16,783 Tax exempt interest (2,977 ) (1,982 ) (2,699 ) Tax exempt income (587 ) (448 ) (638 ) Stock compensation (324 ) (384 ) (546 ) Revaluation of deferred tax assets — — 2,426 Other tax exempt income (313 ) (260 ) (456 ) State tax 295 — — Nondeductible and other 442 169 (34 ) Actual tax expense $ 13,303 $ 10,443 $ 14,836 December 31 December 31 2019 2018 Assets Allowance for loan losses $ 4,120 $ 3,831 Net operating loss and tax credits (from acquisitions) 54 1,038 Director and employee benefits 1,890 2,392 Unrealized loss on AFS securities and fair value hedge — 2,165 Accrued pension 775 801 Fair value adjustment on acquisitions — — Other 2,145 670 Total assets 8,984 10,897 Liabilities Depreciation (4,456 ) (1,850 ) State tax (10 ) (137 ) Federal Home Loan Bank stock dividends (368 ) (330 ) Difference in basis of intangible assets (3,427 ) (2,919 ) Fair value adjustment on acquisitions (2,488 ) (62 ) Unrealized gain on AFS securities and fair value hedge (1,710 ) — Other (63 ) (119 ) Total liabilities (12,522 ) (5,417 ) Valuation allowance — (1,038 ) Net deferred tax asset/(liability) $ (3,538 ) $ 4,442 As of December 31, 2019, the Company had approximately $900,000 of state tax loss available to offset future franchise taxable income. The state loss carryforward begins to expire in 2031. Due to the s Retained earnings of the Bank include approximately $12.8 million for which no deferred income tax liability has been recognized. This amount represents an allocation of previously acquired institutions income to bad debt deductions as of December 31, 1987 for tax purposes only. Reductions of amounts so allocated for purposes other than tax bad debt losses including redemption of bank stock or excess dividends, or loss of “bank” status would create income for tax purposes only, which would be subject to the then-current corporate income tax rate. The unrecorded deferred income tax liability on the above amount for the Company was approximately $2.7 million at December 31, 2019. The Company files income tax returns in the U.S. federal jurisdiction. With a few exceptions, the Company is no longer subject to U.S. federal, state and local or non-U.S.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Accumulated Other Comprehensive Loss	Note 20 – Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss included in capital are as follows: December 31 December 31 2019 2018 Unrealized gain (loss) on securities available for sale $ 12,687 $ (8,561 ) Unamortized gain (loss) on securities held to maturity, previously transferred from AFS (107 ) 10 Unrealized loss on derivative instruments (4,440 ) (1,760 ) Tax effect (1,708 ) 2,167 Total accumulated other comprehensive income (loss) $ 6,432 $ (8,144 )

Commitments, Off-Balance Sheet

Commitments, Off-Balance Sheet Risk and Contingencies	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments, Off-Balance Sheet Risk and Contingencies	Note 21 – Commitments, Off-Balance The Bank was not required to have any cash on deposit with the Federal Reserve Bank to meet regulatory reserve and clearing balance requirements at December 31, 2019. These balances would be included in cash and cash equivalents and would not earn interest. The Bank is a party to financial instruments with off-balance At December 31, 2019 and 2018, commitments to make loans amounted to approximately $958.7 million and $873.8 million and commitments under outstanding standby letters of credit amounted to approximately $17.3 million and $4.8 million. Since many commitments to make loans and standby letters of credit expire without being used, the amount does not necessarily represent future cash advances. No losses are anticipated as a result of these transactions. Collateral obtained upon exercise of the commitment is determined using management’s credit evaluation.

Regulatory Capital

Regulatory Capital	12 Months Ended
	Dec. 31, 2019
Banking and Thrift [Abstract]
Regulatory Capital	Note 22 – Regulatory Capital Horizon and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies and are assigned to a capital category. Failure to meet the minimum regulatory capital requirements can initiate certain mandatory and possible additional discretionary actions by regulators, which if undertaken, could have a direct material effect on the Company’s financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective actions, the Company and Bank must meet specific capital guidelines involving quantitative measures of the Bank’s assets, liabilities, and certain off-balance- Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios of total and Tier I capital to risk-weighted assets, and of Tier I capital to average assets, or leverage ratio. For December 31, 2019 and 2018, Basel III rules require the Company and Bank to maintain minimum amounts and ratios of common equity Tier I capital to risk-weighted assets. Additionally, under Basel III rules, the decision was made to opt-out To be categorized as well capitalized, the Company and Bank must maintain minimum Total risk-based, Tier I risk-based, common equity Tier I risk-based and Tier I leverage ratios as set forth in the table below. As of December 31, 2019 and December 31, 2018, the Bank met all capital adequacy requirements to be considered well capitalized. There have been no conditions or events since the year ending December 31, 2019 that management believes have changed the Bank’s classification as well capitalized. There is no threshold for well-capitalized status for bank holding companies. Horizon and the Bank’s actual and required capital ratios as of December 31, 2019 and 2018 were as follows: Actual Required for Capital 1 Required For Capital 1 Well Capitalized Under 1 Amount Ratio Amount Ratio Amount Ratio Amount Ratio December 31, 2019 Total capital 1 Consolidated $ 548,364 13.95 % $ 314,395 8.00 % $ 412,644 10.50 % N/A N/A Bank 497,227 12.65 % 314,452 8.00 % 412,718 10.50 % $ 393,065 10.00 % Tier 1 capital 1 Consolidated 530,643 13.50 % 235,796 6.00 % 334,044 8.50 % N/A N/A Bank 479,506 12.20 % 235,823 6.00 % 334,082 8.50 % 314,430 8.00 % Common equity tier 1 capital 1 Consolidated 473,150 12.04 % 176,846 4.50 % 275,094 7.00 % N/A N/A Bank 479,506 12.20 % 176,867 4.50 % 275,126 7.00 % 255,475 6.50 % Tier 1 capital 1 Consolidated 530,643 10.50 % 202,111 4.00 % 202,111 4.00 % N/A N/A Bank 479,506 9.49 % 202,110 4.00 % 202,110 4.00 % 252,638 5.00 % December 31, 2018 Total capital 1 Consolidated $ 427,616 13.39 % $ 255,419 8.00 % $ 315,283 9.875 % N/A N/A Bank 396,755 12.43 % 255,419 8.00 % 315,283 9.875 % $ 319,274 10.00 % Tier 1 capital 1 Consolidated 409,760 12.83 % 191,565 6.00 % 251,429 7.875 % N/A N/A Bank 378,899 11.87 % 191,565 6.00 % 251,429 7.875 % 255,420 8.00 % Common equity tier 1 capital 1 Consolidated 371,297 11.63 % 143,673 4.50 % 203,537 6.375 % N/A N/A Bank 378,899 11.87 % 143,674 4.50 % 203,537 6.375 % 207,528 6.50 % Tier 1 capital 1 Consolidated 409,760 10.12 % 162,033 4.00 % 162,033 4.000 % N/A N/A Bank 378,899 9.34 % 162,327 4.00 % 162,327 4.000 % 202,908 5.00 % The above minimum capital requirements exclude the capital conservation buffer required to avoid limitations on capital distributions, including dividend payments and certain discretionary bonus payments to executive officers. The capital conservation buffer was in b y increments starting with the 2016 calculations and was fully implemented by 2019. The capital conservation buffer was 2.50% at December 31, 2019. The net unrealized gain or loss on available for sale securities is not included in computing regulatory capital.

Share-Based Compensation

Share-Based Compensation	12 Months Ended
	Dec. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-Based Compensation	Note 23 – Share-Based Compensation On January 21, 2003, the Board of Directors adopted the Horizon Bancorp 2003 Omnibus Equity Incentive Plan (“2003 Plan”), which was approved by stockholders on May 8, 2003. Under the 2003 Plan, Horizon could issue up to 759,375 common shares, plus the number of shares that are tendered to or withheld by Horizon in connection with the exercise of options plus that number of shares that are purchased by Horizon with the cash proceeds received upon option exercises. The 2003 Plan limited the number of shares available to 759,375 for incentive stock options and to 379,687 for the grant of non-option shares is being amortized against earnings using the straight-line method over the vesting period. The options shares granted under the 2003 Plan vest at a rate designated per the individual agreements. The restricted shares granted under the 2003 Plan vest at the end of each grant’s vesting period. On March 8, 2010, the Board of Directors adopted, and on May 6, 2010, the stockholders approved, an amendment to the 2003 Plan making an additional 885,937 common shares available for issuance. All share data has been adjusted for the 3:2 stock split on June 15, 2018 (and for four additional stock splits in 2003, 2011, 2012 and 2016 after the 2003 Plan was adopted). A summary of option activity under the 2003 Plan as of December 31, 2019, and changes during the year then ended, is presented below: Shares Weighted- Weighted- Aggregate Outstanding, beginning of year 21,300 $ 5.03 Granted — — Exercised (8,625 ) 4.45 Forfeited — — Outstanding, end of year 12,675 5.42 1.04 $ 172,096 Exercisable, end of year 12,675 5.42 1.04 172,096 On June 18, 2013, the Board of Directors adopted the Horizon Bancorp 2013 Omnibus Equity Incentive Plan (“2013 Plan”), which was approved by the Company’s shareholders on May 8, 2014. Under the 2013 Plan, Horizon may issue up to 1,556,325 common shares, plus the number of shares that are tendered to or withheld by Horizon in connection with the exercise of options plus that number of shares that are purchased by Horizon with the cash proceeds received upon option exercises. The 2013 Plan limits the number of shares available to 225,000 for incentive stock options and to 900,000 for the grant of non-option The 2013 Plan was amended on May 3, 2018, upon shareholder approval, primarily to allow grants of other types of stock-based awards, such as awards valued in whole or in part by reference to the value of shares of Horizon common stock. 3:2 The restricted shares can vest over a period of time established by the Committee at the time of each grant, but the restricted shares already granted under the 2013 Plan generally vest at the end of three, four or five years of continuous employment . Holders of restricted shares receive dividends and may vote the shares. The restricted shares are recorded at fair market value (on the date granted) as a separate component of stockholders’ equity. The cost of these shares is being amortized against earnings using the straight-line method over the vesting period. The performance shares that are awarded become earned and vested based on the achievement of certain performance goals during a performance period as established by the Committee at the time of each grant. The performance goals under the presently-awarded grant agreements are based on a comparison of the Company’s average performance over the performance period for the return on common equity, compounded annual growth rate of total assets, and return on average assets, all as relative to the average performance for publicly traded banks with total assets between $1 billion and $5 billion on the SNL Bank Index. Holders of performance share awards receive pass-through dividends but do not have any voting rights before the performance shares are earned and vested. The options shares granted under the 2013 Plan vest at a rate designated per the individual agreements. The fair value of options granted is estimated on the date of the grant using an option-pricing model with the following weighted-average assumptions: Years Ended December 31 2019 2018 2017 Dividend yields 2.39 % 1.99 % 1.75 % Volatility factors of expected market price of common stock 28.67 % 28.60 % 28.52 % Risk-free interest rates 2.61 % 2.85 % 2.42 % Expected life of options 8 years 8 years 8 years A summary of option activity under the 2013 Plan as of December 31, 2019, and changes during the year then ended, is presented below: Shares Weighted- Weighted- Aggregate Outstanding, beginning of year 307,317 $ 12.28 Granted 35,966 16.74 Exercised (24,256 ) 9.75 Forfeited (2,250 ) 10.38 Outstanding, end of year 316,777 12.99 6.37 $ 1,822,924 Exercisable, end of year 242,814 11.58 5.74 1,802,010 The weighted average grant-date fair value of options granted during the years 2019, 2018 and 2017 was $4.44, $5.54 and $4.83. A summary of the status of Horizon’s non-vested Shares Weighted Non-vested, 176,538 $ 16.90 Vested (43,358 ) 11.17 Granted 84,526 16.74 Forfeited (4,137 ) 18.23 Non-vested, 213,569 17.97 Total compensation cost recognized in the income statement for option-based payment arrangements during 2019 was $215,000 and the related tax benefit recognized was approximately $45,000. Total compensation cost recognized in the income statement for option-based payment arrangements during 2018 and 2017 was $251,000 and $325,000 and the related tax benefit recognized was $53,000 and $114,000, respectively. Total compensation cost recognized in the income statement for restricted share and performance share based payment arrangements during 2019, 2018 and 2017 was $705,000, $376,000, and $135,000. The recognized tax benefit related thereto was approximately $148,000, $79,000, and $47,000 for the years ended December 31, 2019, 2018 and 2017. Cash received from option exercise under all share-based payment arrangements for the years ended December 31, 2019, 2018 and 2017 was $236,000, $493,000, and $1.6 million. The actual tax benefit realized for the tax deductions from option exercise of the share-based payment arrangements totaled $104,000, $213,000, and $522,000, for the years ended December 31, 2019, 2018 and 2017. As of December 31, 2019, there was $1.5 million of total unrecognized compensation cost related to all non-vested

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Note 24 – Derivative Financial Instruments Cash Flow Hedges As a strategy to maintain acceptable levels of exposure to the risk of changes in future cash flow due to interest rate fluctuations, the Company entered into interest rate swap agreements for a portion of its floating rate debt. The agreements provide for the Company to receive interest from the counterparty at three month LIBOR and to pay interest to the counterparty at a weighted average fixed rate of 4.03% on a notional amount of $15.5 million at December 31, 2019 and at a weighted average fixed rate of 3.76% on a notional amount of $30.5 million at December 31, 2018. Under the agreements, the Company pays or receives the net interest amount monthly, with the monthly settlements included in interest expense. The Company assumed additional interest rate swap agreements as the result of the LaPorte acquisition in July 2016. The agreements provide for the Company to receive interest from the counterparty at one month LIBOR and to pay interest to the counterparty at a weighted average fixed rate of 2.31% on a notional amount of $30.0 million at December 31, 2019 and 2018. Under the agreements, the Company pays or receives the net interest amount monthly, with the monthly settlements included in interest expense. On July 20, 2018, the Company entered into an interest rate swap agreement for an additional portion of its floating rate debt. The agreement provides for the Company to receive interest from the counterparty at one month LIBOR and to pay interest to the counter party at a rate of 2.81% on a notional amount of $50.0 million at December 31, 2019 and 2018. Under the agreement, the Company pays or receives the net interest amount monthly, with the monthly settlements included in interest expense. Management has designated the interest rate swap agreements as cash flow hedging instruments. For derivative instruments that are designated and qualify as a cash flow hedge, the effective portion of the gain or loss on the derivative is reported as a component of other comprehensive income and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. At December 31, 201 9 Fair Value Hedges Fair value hedges are intended to reduce the interest rate risk associated with the underlying hedged item. The Company enters into fixed rate loan agreements as part of its lending policy. To mitigate the risk of changes in fair value based on fluctuations in interest rates, the Company has entered into interest rate swap agreements on individual loans, converting the fixed rate loans to a variable rate. At December 31, 2019, the Company’s fair value hedges were effective and are not expected to have a significant impact on the Company’s net income over the next 12 months. The change in fair value of both the hedge instruments and the underlying loan agreements are recorded as gains or losses in interest income. The fair value hedges are considered to be highly effective and any hedge ineffectiveness was deemed not material. The notional amounts of the loan and security Other Derivative Instruments The Company enters into non-hedging The change in fair value of both the forward sale commitments and commitments to originate mortgage loans were recorded and the net gains or losses included in the Company’s gain on sale of loans. The following tables summarize the fair value of derivative financial instruments utilized by Horizon: Asset Derivatives Liability Derivatives December 31, 2019 December 31, 2019 Balance Sheet Fair Balance Sheet Fair Derivatives designated as hedging instruments Interest rate contracts Other a $ 11,422 Other liabilities $ 15,861 Total derivatives desginated as hedging instruments 11,422 15,861 Derivatives not designated as hedging instruments Mortgage loan contracts Other assets 264 Other liabilities 38 Total derivatives not designated as hedging instruments 264 38 Total derivatives $ 11,686 $ 3,745 Asset Derivatives Liability Derivatives December 31, 2018 December 31, 2018 Balance Sheet Fair Balance Sheet Fair Derivatives designated as hedging instruments Interest rate contracts Other a $ 42 Other liabilities $ 1,802 Total derivatives desginated as hedging instruments 42 1,802 Derivatives not designated as hedging instruments Mortgage loan contracts Other assets 135 Other liabilities — Total derivatives not designated as hedging instruments 135 — Total derivatives $ 177 $ 1,802 The effect of the derivative instruments on the consolidated statement of income for the 12-month Amount of (Gain) Loss Recognized in Other Comprehensive Years Ended December 31 2019 2018 2017 Derivatives in cash flow hedging relationship Interest rate contracts $ (2,117 ) $ (25 ) $ 913 FASB ASC 820-10-20 820-10-55 Location of gain (loss) Amount of Gain (Loss) Recognized on Derivative Years Ended December 31 derivative 2019 2018 2017 Derivative in fair value hedging relationship Interest rate contracts Interest income - $ (11,380 ) $ (852 ) $ (817 ) Interest rate contracts Interest 11,380 852 817 Total $ — $ — $ — Location of gain (loss) Amount of Gain (Loss) Recognized on Derivative Years Ended December 31 derivative 2019 2018 2017 Derivative not designated as hedging relationship Mortgage contracts Other income - gain on sale of loans $ 91 $ (5 ) $ (439 )

Disclosures about fair value of

Disclosures about fair value of assets and liabilities	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Disclosures about fair value of assets and liabilities	Note 25 – Disclosures about fair value of assets and liabilities The Fair Value Measurements topic of the FASB ASC defines fair value, establishes a framework for measuring fair value and expands disclosures about fair value measurements. There are three levels of inputs that may be used to measure fair value: Level 1 Quoted prices in active markets for identical assets or liabilities Level 2 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 for substantially the full term of the assets or liabilities Level 3 Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities Following is a description of the valuation methodologies used for instruments measured at fair value on a recurring basis and recognized in the accompanying consolidated financial statements, as well as the general classification of such instruments pursuant to the valuation hierarchy. There have been no significant changes in the valuation techniques during the period ended December 31, 2019. Available for sale securities When quoted market prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy. If quoted market prices are not available, then fair values are estimated by using pricing models, quoted prices of securities with similar characteristics or discounted cash flows. Level 2 securities include U.S. Treasury and federal agency securities, state and municipal securities, federal agency mortgage obligations and mortgage-backed pools, private-label mortgage-backed pools and corporate notes. Level 2 securities are valued by a third party pricing service commonly used in the banking industry utilizing observable inputs. Observable inputs include dealer quotes, market spreads, cash flow analysis, the U.S. Treasury yield curve, trade execution data, market consensus prepayment spreads and available credit information and the bond’s terms and conditions. The pricing provider utilizes evaluated pricing models that vary based on asset class. These models incorporate available market information including quoted prices of securities with similar characteristics and, because many fixed-income securities do not trade on a daily basis, apply available information through processes such as benchmark curves, benchmarking of like securities, sector grouping, and matrix pricing. In addition, model processes, such as an option adjusted spread model is used to develop prepayment and interest rate scenarios for securities with prepayment features. Hedged loans Certain fixed rate loans have been converted to variable rate loans by entering into interest rate swap agreements. The fair value of those fixed rate loans is based on discounting the estimated cash flows using interest rates determined by the respective interest rate swap agreement. Loans are classified within Level 2 of the valuation hierarchy based on the unobservable inputs used. Interest rate swap agreements The fair value of the Company’s interest rate swap agreements is estimated by a third party using inputs that are primarily unobservable including a yield curve, adjusted for liquidity and credit risk, contracted terms and discounted cash flow analysis, and therefore, are classified within Level 2 of the valuation hierarchy. The following table presents the fair value measurements of assets and liabilities recognized in the accompanying financial statements measured at fair value on a recurring basis and the level within the FASB ASC fair value hierarchy in which the fair value measurements fall at the following: December 31, 2019 Fair Value Quoted Prices in Significant Significant Available for sale securities U.S. Treasury and federal agencies $ 1,413 $ — $ 1,413 $ — State and municipal 405,768 — 405,768 — Federal agency collateralized mortgage obligations 269,252 — 269,252 — Federal agency mortgage-backed pools 146,572 — 146,572 — Corporate notes 11,771 — 11,771 — Total available for sale securities 834,776 — 834,776 — Interest rate swap agreements asset 11,422 — 11,422 — Forward sale commitments 264 — 264 — Interest rate swap agreements liability (15,861 ) — (15,861 ) — Commitments to originate loans (38 ) — (38 ) — December 31, 2018 Fair Value Quoted Prices in Significant Significant Available for sale securities U.S. Treasury and federal agencies $ 16,608 $ — $ 16,608 $ — State and municipal 209,303 — 209,303 — Federal agency collateralized mortgage obligations 185,003 — 185,003 — Federal agency mortgage-backed pools 178,736 — 178,736 — Corporate notes 10,698 — 10,698 — Total available for sale securities 600,348 — 600,348 — Interest rate swap agreements asset 42 — 42 — Forward sale commitments 135 — 135 — Interest rate swap agreements liability (1,801 ) — (1,801 ) — Commitments to originate loans — — — — Realized gains and losses included in net inc o Years Ended December 31 Non-interest 2019 2018 2017 Total gains and losses from: Hedged loans $ (11,380 ) $ (852 ) $ (817 ) Fair value interest rate swap agreements 11,380 852 817 Derivative loan commitments 91 (5 ) (439 ) $ 91 $ (5 ) $ (439 ) Certain other assets are measured at fair value on a nonrecurring basis in the ordinary course of business and are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment): Fair Quoted Prices in Significant Significant December 31, 2019 Impaired loans $ 6,806 $ — $ — $ 6,806 Mortgage servicing rights 14,327 — — 14,327 December 31, 2018 Impaired loans $ 5,661 $ — $ — $ 5,661 Mortgage servicing rights 12,349 — — 12,349 Impaired (collateral dependent): If the impaired loan is identified as collateral dependent, then the fair value method of measuring the amount of impairment is utilized. This method requires obtaining a current independent appraisal of the collateral and applying a discount factor to the value. Impaired loans that are collateral dependent are classified within Level 3 of the fair value hierarchy when impairment is determined using the fair value method. Mortgage Servicing Rights (MSRs): month-end The following table presents qualitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements, other than goodwill, at December 31, 2019 and 2018. December 31, 2019 Fair Valuation Unobservable Range Value Technique Inputs (Weighted Average) Impaired loans $ 6,806 Collateral based measurement Discount to reflect current market 0%-100% Mortgage servicing rights 14,327 Discounted cash flows Discount rate, 8.7%-9.0% 10.2%-19.8% ( %), 0.1%-2.9% December 31, 2018 Fair Valuation Unobservable Range Value Technique Inputs (Weighted Average) Impaired loans $ 5,661 Collateral based measurement Discount to reflect current market 0%-100% Mortgage servicing rights 12,349 Discounted cash flows Discount rate, 10.2%-11.0% ( 9.1%-21.9% 0.1%-2.8%

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 26 – Fair Value of Financial Instruments The estimated fair value amounts of the Company’s financial instruments were determined using available market information, current pricing information applicable to Horizon and various valuation methodologies. Where market quotations were not available, considerable management judgment was involved in the determination of estimated fair values. Therefore, the estimated fair value of financial instruments shown below may not be representative of the amounts at which they could be exchanged in a current or future transaction. Due to the inherent uncertainties of expected cash flows of financial instruments, the use of alternate valuation assumptions and methods could have a significant effect on the estimated fair value amounts. The estimated fair values of financial instruments, as shown below, are not intended to reflect the estimated liquidation or market value of Horizon taken as a whole. The disclosed fair value estimates are limited to Horizon’s significant financial instruments at December 31, 2019 and December 31, 2018. These include financial instruments recognized as assets and liabilities on the consolidated balance sheet as well as certain off-balance The following methods and assumptions were used to estimate the fair value of each class of financial instrument: Cash and Due from Banks Held-to-Maturity Securities Loans Held for Sale Net Loans FHLB Stock Interest Receivable/Payable Deposits Borrowings Subordinated Debentures Commitments to Extend Credit and Standby Letters of Credit The following table presents estimated fair values of the Company’s financial instruments and the level within the fair value hierarchy in which the fair value measurements fall. December 31, 2019 Carrying Quoted Prices in Significant Significant Assets Cash and due from banks $ 98,831 $ 98,831 $ — $ — Interest-earning time deposits 8,455 — 8,537 — Investment securities, held to maturity 207,899 — 215,147 — Loans held for sale 4,088 — — 4,088 Loans (excluding loan level hedges), net 3,619,174 — — 3,554,951 Stock in FHLB 22,447 — 22,447 — Interest receivable 18,828 — 18,828 — Liabilities Non-interest $ 709,760 $ 709,760 $ — $ — Interest bearing deposits 3,221,242 — 3,180,768 — Borrowings 549,741 — 546,995 — Subordinated debentures 56,311 — 51,809 — Interest payable 3,062 — 3,062 — December 31, 2018 Carrying Quoted Prices in Significant Significant Assets Cash and due from banks $ 58,492 $ 58,492 $ — $ — Interest-earning time deposits 15,744 — 15,542 — Investment securities, held to maturity 210,112 — 208,273 — Loans held for sale 1,038 — — 1,038 Loans (excluding loan level hedges), net 2,786,351 — — 2,681,741 Stock in FHLB 18,073 — 18,073 — Interest receivable 14,239 — 14,239 — Liabilities Non-interest $ 642,129 $ 642,129 $ — $ — Interest bearing deposits 2,497,247 — 2,377,274 — Borrowings 550,384 — 542,311 — Subordinated debentures 37,837 — 35,711 — Interest payable 2,031 — 2,031 —

General Litigation

General Litigation	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
General Litigation	Note 27 – General Litigation The Company is subject to claims and lawsuits that arise primarily in the ordinary course of business. It is the opinion of management that the disposition or ultimate resolution of such claims and lawsuits will not have a material adverse effect on the consolidated financial position, results of operations and cash flows of the C o

Condensed Financial Information

Condensed Financial Information (Parent Company Only)	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Information (Parent Company Only)	Note 28 – Condensed Financial Information (Parent Company Only) Presented below is condensed financial information as to financial position, results of operations and cash flows of Horizon Bancorp, Inc.: Condensed Balance Sheets December 31 December 31 2019 2018 Assets Total cash and cash equivalents $ 50,961 $ 30,653 Investment in subsidiaries 666,639 502,844 Other assets 3,882 1,186 Total assets $ 721,482 $ 534,683 Liabilities Subordinated debentures $ 56,311 $ 37,837 Other liabilities 9,148 4,854 Stockholders’ Equity 656,023 491,992 Total liabilities and stockholders’ equity $ 721,482 $ 534,683 Condensed Statements of Income Years Ended December 31 2019 2018 2017 Operating Income (Expense) Dividend income from subsidiaries $ 46,150 $ 46,950 $ 27,000 Other income — — 540 Interest expense (3,209 ) (2,475 ) (2,791 ) Employee benefit expense (1,687 ) (1,423 ) (1,094 ) Other expense (416 ) (357 ) (326 ) Income Before Undistributed Income of Subsidiaries 40,838 42,695 23,329 Undistributed Income of Subsidiaries 25,053 9,643 8,804 Income Before Tax 65,891 52,338 32,133 Income Tax Benefit 647 779 984 Net Income Available to Common Shareholders $ 66,538 $ 53,117 $ 33,117 Condensed Statements of Comprehensive Income Years Ended December 31 2019 2018 2017 Net Income $ 66,538 $ 53,117 $ 33,117 Other Comprehensive Income (Loss) Change in fair value of derivative instruments, net of taxes (2,117 ) (25 ) 913 Unrealized appreciation for the period on held to maturity securities, net of taxes (92 ) (150 ) (166 ) Unrealized appreciation (depreciation) on available for sale securities, net of taxes 16,727 (4,003 ) 1,371 Less: reclassification adjustment for realized (gains) losses included in net income, net of 59 351 (25 ) 14,576 (3,827 ) 2,093 Comprehensive Income $ 81,114 $ 49,290 $ 35,210 Condensed Statements of Cash Flows Years Ended December 31 2019 2018 2017 Operating Activities Net income $ 66,538 $ 53,117 $ 33,117 Items not requiring (providing) cash Equity in undistributed net income of subsidiaries (25,053 ) (9,643 ) (8,804 ) Change in: Share based compensation 215 251 325 Amortization of unearned compensation 705 169 135 Other assets (5,449 ) 132 388 Other liabilities 1,629 378 (1,675 ) Net cash provided by operating activities 38,585 44,404 23,486 Investing Activities Repurchase of outstanding stock (1,595 ) — — Acquisition of Lafayette — — (1,254 ) Acquisition of Wolverine — — (7,688 ) Acquisition of Salin 2,350 — — Net cash used in investing activities 755 — (8,942 ) Financing Activities Net change in borrowings 98 (12,316 ) (6,803 ) Dividends paid on common shares (20,835 ) (15,418 ) (11,720 ) Proceeds from issuance of stock 1,705 622 1,604 Net cash used in financing activities (19,032 ) (27,112 ) (16,919 ) Net Change in Cash and Cash Equivalents 20,308 17,292 (2,375 ) Cash and Cash Equivalents at Beginning of Year 30,653 13,361 15,736 Cash and Cash Equivalents at End of Year $ 50,961 $ 30,653 $ 13,361

Quarterly Results of Operations

Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations (Unaudited)	Note 29 – Quarterly Results of Operations (Unaudited) The following is a summary of the quarterly consolidated results of operations: Three Months Ended March 31 June 30 September 30 December 31 2019 2019 2019 2019 Interest income $ 45,373 $ 53,850 $ 55,711 $ 53,398 Interest expense 11,093 12,321 12,248 11,879 Net interest income 34,280 41,529 43,463 41,519 Provision for loan losses 364 896 376 340 Gain (loss) on sale of securities 15 (100 ) — 10 Net income $ 10,816 $ 16,642 $ 20,537 $ 18,543 Earnings per share: Basic $ 0.28 $ 0.37 $ 0.46 $ 0.41 Diluted 0.28 0.37 0.46 0.41 Average shares outstanding: Basic 38,822,543 45,055,117 45,038,021 44,971,676 Diluted 38,906,172 45,130,408 45,113,730 45,103,065 Three Months Ended March 31 June 30 September 30 December 31 2018 2018 2018 2018 Interest income $ 39,426 $ 40,741 $ 42,271 $ 43,730 Interest expense 6,015 7,191 8,499 9,894 Net interest income 33,411 33,550 33,772 33,836 Provision for loan losses 567 635 1,176 528 Gain (loss) on sale of securities 11 — (122 ) (332 ) Net income $ 12,804 $ 14,115 $ 13,065 $ 13,133 Earnings per share: Basic $ 0.33 $ 0.37 $ 0.34 $ 0.35 Diluted 0.33 0.37 0.34 0.34 Average shares outstanding: Basic 38,306,395 38,347,612 38,365,379 38,367,972 Diluted 38,468,810 38,519,401 38,534,970 38,488,861

Future Accounting Matters

Future Accounting Matters	12 Months Ended
	Dec. 31, 2019
Accounting Changes and Error Corrections [Abstract]
Future Accounting Matters	Note 30 – Future Accounting Matters Financial Accounting Standards Board (“FASB”) Accounting Standards Update (“ASU”) No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement The FASB has issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement Removals Modifications Additions The guidance is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should all be applied prospectively for only the most recent interim or annual period presented in the initial year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. Early adoption is permitted. An entity is permitted to early adopt any removed or modified disclosures upon issuance of ASU No. 2018-13 2018-13 FASB ASU No. 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment The FASB has issued ASU No. 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment FASB ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments The FASB has issued ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Our Current Expected Credit Loss (“CECL”) task force has been meeting on a monthly basis, at a minimum, to review implementation matters related to the completeness and accuracy of historical data, model development and corporate governance documentation. Specifically regarding model development, the task force has analyzed results from parallel model runs for each portfolio segment and evaluated assumptions related to unfunded commitments, acquired performing loans, and economic and forecast factors. Our task force has also reviewed new corporate governance documentation, such as our new CECL Allowance for Credit Losses (“ACL”) policy, procedure manuals and internal control documentation. Horizon has completed data and model validation testing, determined qualitative adjustments, established additional supporting analytics, and developed related internal controls over model inputs (data and assumptions) and model operations. While the model is operational, approval of certain governance related matters, procedures and policies are being finalized. The final year-end estimate for CECL has not been determined and the required financial reporting disclosures are being completed for review. Internal controls over financial reporting specifically related to CECL have been designed and are being evaluated, however, all internal controls related to CECL implementation are not operational. The final step of completing the formal governance and approval process is in its final stages. We expect the one-time cumulative effect adjustment to the ACL will be between $16.2 million and $20.8 million upon adoption as of January 1, 2020. The majority of the increase is related to including our acquired loan portfolios in the model and the addition of using economic forecasts in estimating future losses. As we continue to evaluate and refine our CECL model during the first quarter of 2020, the estimated range of impact to the ACL as of January 1, 2020 could change.

Nature of Operations and Summ_2

Nature of Operations and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business The Bank is a full-service commercial bank offering a broad range of commercial and retail banking and other services incident to banking along with a trust department that offers corporate and individual trust and agency services and investment management services. The Bank maintains 74 full service offices. The Bank has wholly owned direct and indirect subsidiaries: Horizon Investments, Inc. (“Horizon Investments”), Horizon Properties, Inc. (“Horizon Properties”), Horizon Insurance Services, Inc. (“Horizon Insurance”) and Horizon Grantor Trust. Horizon Investments manages the investment portfolio of the Bank. Horizon Properties manages the real estate investment trust. Horizon Insurance is used by the Company’s Wealth Management to sell certain insurance products. Horizon Grantor Trust holds title to certain company owned life insurance policies. Horizon conducts no business except that incident to its ownership of the subsidiaries. Horizon formed Horizon Bancorp Capital Trust II in 2004 (“Trust II”) and Horizon Bancorp Capital Trust III in 2006 (“Trust III”) for the purpose of participating in pooled trust preferred securities offerings. The Company assumed additional debentures as the result of the following acquisitions: Alliance Financial Corporation in 2005, which formed Alliance Financial Statutory Trust I (“Alliance Trust”); American Trust & Savings Bank in 2010, which formed Am Tru Statutory Trust I (“Am Tru Trust”); Heartland Bancshares, Inc. in 2013, which formed Heartland (IN) Statutory Trust II (“Heartland Trust”); LaPorte Bancorp, Inc. in 2016, which acquired City Savings Statutory Trust I (“City Savings Trust”) in 2007; and Salin Bancshares, Inc. in 2003, which formed Salin Statutory Trust I (“Salin Trust”). See Note 1 6
Basis of Reporting	Basis of Reporting
Use of Estimates	Use of Estimates Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan losses, valuation of other real estate owned, goodwill and intangible assets, mortgage servicing rights, other-than-temporary impairments and fair values of financial instruments.
Cash and Cash Equivalents	Cash and Cash Equivalents
Fair Value Measurements	Fair Value Measurements As defined in codification, fair value is the price to sell an asset or transfer a liability in an orderly transaction between market participants. It represents an exit price at the measurement date. Market participants are buyers and sellers, who are independent, knowledgeable, and willing and able to transact in the principal (or most advantageous) market for the asset or liability being measured. Current market conditions, including imbalances between supply and demand, are considered in determining fair value. Horizon values its assets and liabilities in the principal market where it sells the particular asset or transfers the liability with the greatest volume and level of activity. In the absence of a principal market, the valuation is based on the most advantageous market for the asset or liability (i.e., the market where the asset could be sold or the liability transferred at a price that maximizes the amount to be received for the asset or minimizes the amount to be paid to transfer the liability). In measuring the fair value of an asset, Horizon assumes the highest and best use of the asset by a market participant to maximize the value of the asset, and does not consider the intended use of the asset. When measuring the fair value of a liability, Horizon assumes that the nonperformance risk associated with the liability is the same before and after the transfer. Nonperformance risk is the risk that an obligation will not be satisfied and encompasses not only Horizon’s own credit risk (i.e., the risk that Horizon will fail to meet its obligation), but also other risks such as settlement risk. Horizon considers the effect of its own credit risk on the fair value for any period in which fair value is measured. There are three acceptable valuation techniques that can be used to measure fair value: the market approach, the income approach and the cost approach. Selection of the appropriate technique for valuing a particular asset or liability takes into consideration the exit market, the nature of the asset or liability being valued, and how a market participant would value the same asset or liability. Ultimately, determination of the appropriate valuation method requires significant judgment, and sufficient knowledge and expertise are required to apply the valuation techniques. Valuation inputs refer to the assumptions market participants would use in pricing a given asset or liability using one of the three valuation techniques. Inputs can be observable or unobservable. Observable inputs are those assumptions which market participants would use in pricing the particular asset or liability. These inputs are based on market data and are obtained from a source independent of Horizon. Unobservable inputs are assumptions based on Horizon’s own information or estimate of assumptions used by market participants in pricing the asset or liability. Unobservable inputs are based on the best and most current information available on the measurement date. All inputs, whether observable or unobservable, are ranked in accordance with a prescribed fair value hierarchy which gives the highest ranking to quoted prices (unadjusted) in active markets for identical assets or liabilities (Level 1) and the lowest ranking to unobservable inputs (Level 3). Fair values for assets or liabilities classified as Level 2 are based on one or a combination of the following factors: (i) quoted prices for similar assets; (ii) observable inputs for the asset or liability, such as interest rates or yield curves; or (iii) inputs derived principally from or corroborated by observable market data. The level in the fair value hierarchy within which the fair value measurement in its entirety falls is determined based on the lowest level input that is significant to the fair value measurement in its entirety. The Company considers an input to be significant if it drives 10% or more of the total fair value of a particular asset or liability. Assets and liabilities are considered to be fair valued on a recurring basis if fair value is measured regularly (i.e., daily, weekly, monthly or quarterly). Recurring valuation occurs at a minimum on the measurement date. Assets and liabilities are considered to be fair valued on a nonrecurring basis if the fair value measurement of the instrument does not necessarily result in a change in the amount recorded on the balance sheet. Generally, nonrecurring valuation is the result of the application of other accounting pronouncements which require assets or liabilities to be assessed for impairment or recorded at the lower of cost or fair value. The fair value of assets or liabilities transferred in or out of Level 3 is measured on the transfer date, with any additional changes in fair value subsequent to the transfer considered to be realized or unrealized gains or losses.
Investment Securities Available for Sale	Investment Securities Available for Sale
Investment Securities Held to Maturity	Investment Securities Held to Maturity
Loans Held for Sale	Loans Held for Sale
Interest and Fees on Loans	Interest and Fees on Loans
Concentrations of Credit Risk	Concentrations of Credit Risk n cent ral s c
Mortgage Warehouse Loans	Mortgage Warehouse Loans The transaction does not qualify as a sale under ASC 860, Transfers and Servicing and therefore is accounted for as a secured borrowing with pledge of collateral pursuant to the agreement with the mortgage company. When the individual loan is sold to the end investor by the mortgage company, the proceeds from the sale of the loan are received by Horizon and used to pay off the loan balance with Horizon along with any accrued interest and any related fees. The remaining balance from the sale is forwarded to the mortgage company. These individual loans typically are sold by the mortgage company within 30 days and are seldom held more than 90 days. Interest income is accrued during this period and collected at the time each loan is sold. Fee income for each loan sold is collected when the loan is sold and no costs are deferred due to the term between each loan funding and related payoff, which is typically less than 30 days. Based on the agreements with each mortgage company, at any time a mortgage company can reacquire from Horizon its outstanding loan balance on an individual mortgage and regain possession of the original note. Horizon also has the option to request that the mortgage company reacquire an individual mortgage. Should this occur, Horizon would return the original note and reassign the assignment of the mortgage to the mortgage company. Also, in the event that the end investor would not be able to honor the sales commitment and the mortgage company would not be able to reacquire its loan on an individual mortgage, Horizon would be able to exercise its rights under the agreement.
Allowance for Loan Losses	Allowance for Loan Losses The general allowance is calculated by applying loss factors to pools of outstanding loans. Loss factors are based on historical loss experience and may be adjusted for significant factors that, in management’s judgment, affect the collectability of the portfolio as of the evaluation date. Specific allowances are established in cases where management has identified conditions or circumstances related to a credit that management believes indicate the probability that a loss will be incurred in excess of the amount determined by the application of the formula allowance. The qualitative allowance is based upon management’s evaluation of various conditions, the effects of which are not directly measured in the determination of the general and specific allowances. The evaluation of the inherent loss with respect to these conditions is subject to a higher degree of uncertainty because they are not identified with specific credits. The conditions evaluated in connection with the qualitative allowance may include factors such as local, regional and national economic conditions and forecasts, concentrations of credit and changes in the composition of the portfolio.
Loan Impairment	Loan Impairment non-accrual charged-off Loans are considered impaired if the borrower does not exhibit the ability to pay or the full principal or interest payments are not expected or made in accordance with the original terms of the loan. Impaired loans are measured and carried at the lower of cost or the present value of expected future cash flows discounted at the loan’s effective interest rate, at the loan’s observable market price or at the fair value of the collateral if the loan is collateral dependent. Smaller balance homogenous loans are evaluated for impairment in the aggregate. Such loans include residential first mortgage loans secured by one to four family residences, residential construction loans and automobile, home equity and second mortgages. Commercial loans and mortgage loans secured by other properties are evaluated individually for impairment.
Loans Acquired in Business Combinations	Loans Acquired in Business Combinations past-due 310-30) , including loan prepayment considerations, of the acquired loans. For purposes of applying FASB ASC 310-30, loans acquired in business combinations are aggregated into pools of loans with common risk characteristics. Acquired loans not accounted for under ASC 310-30 are accounted for under ASC 310-20, which allows the fair value adjustment to be accreted to income over the remaining life of the loans. The expected cash flows of the acquired loan pools in excess of the fair values recorded is referred to as the accretable yield and is recognized in interest income over the remaining estimated lives of the loan pools. The Company continues to evaluate the fair value of the loans including cash flows expected to be collected. Increases in the Company’s cash flow expectation are recognized as increases to the accretable yield while decreases are recognized as impairments through the allowance for loan losses. Performing loans acquired (FASB ASC 310-20)
Premises and Equipment	Premises and Equipment
Federal Reserve and Federal Home Loan Bank of Indianapolis (FHLBI) Stock	Federal Reserve and Federal Home Loan Bank of Indianapolis (FHLBI) Stock
Mortgage Servicing Rights	Mortgage Servicing Rights 860-50), 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. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, the custodial earnings rate, an inflation rate, ancillary income, prepayment speeds and default rates and losses. These variables change from quarter to quarter as market conditions and projected interest rates change, and may have an adverse impact on the value of the mortgage servicing right and may result in a reduction to noninterest income. Each class of separately recognized servicing assets subsequently measured using the amortization method are evaluated and measured for impairment. Impairment is determined by stratifying rights into tranches based on predominant characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance for an individual tranche, to the extent that fair value is less than the carrying amount of the servicing assets for that tranche. The valuation allowance is adjusted to reflect changes in the measurement of impairment after the initial measurement of impairment. Changes in valuation allowances are reported with mortgage servicing income net of impairment on the income statement. Fair value in excess of the carrying amount of servicing assets for that stratum is not recognized. Servicing fee income is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income when earned. The amortization of mortgage servicing rights is netted against loan servicing fee income.
Intangible Assets	Intangible Assets
Bank Owned Life Insurance (BOLI)	Bank Owned Life Insurance (BOLI)
Income Taxes	Income Taxes Income Taxes Uncertain tax positions are recognized if it is more likely than not, based on the technical merits, that the tax position will be realized or sustained upon examination. The term more likely than not means a likelihood of more than 50 percent; the terms examined and upon examination also include resolution of the related appeals or litigation processes, if any. A tax position that meets the more- likely-than-not more-likely-than-not The Company recognizes interest and penalties on income taxes as a component of income tax expense. The Company files consolidated income tax returns with its subsidiaries.
Trust Assets and Income	Trust Assets and Income
Transfer of Financial Assets	Transfer of Financial Assets
Earnings per Common Share	Earnings per Common Share Years Ended December 31 2019 2018 2017 Basic earnings per share Net income $ 66,538 $ 53,117 $ 33,117 Weighted average common shares outstanding (1) 43,493,316 38,347,059 34,553,736 Basic earnings per share $ 1.53 $ 1.39 $ 0.96 Diluted earnings per share Net income available to common shareholders $ 66,538 $ 53,117 $ 33,117 Weighted average common shares outstanding (1) 43,493,316 38,347,059 34,553,736 Effect of dilutive securities: Restricted stock 23,006 36,185 46,981 Stock options 81,273 111,987 159,721 Weighted average common shares outstanding 43,597,595 38,495,231 34,760,438 $ 1.53 $ 1.38 $ 0.95 (1) Adjusted for 3:2 stock split on June 15, 2018 There were 120,341, 102,138 and zero shares for the twelve months ended December 31, 2019, 2018 and 2017, respectively, which were not included in the computation of diluted earnings per share because they were non-dilutive. On May 15, 2018, the Board of Directors of the Company approved a three-for-two three-for-two three-for-two On July 16, 2019, the Board of Directors of the Company authorized a stock repurchase program for up to 2,250,000 shares of Horizon’s issued and outstanding common stock, no par value. As of December 31, 2019, Horizon had repurchased a total of 99,407 shares at an average price per share of $16.04.
Dividend Restrictions	Dividend Restrictions 2
Consolidated Statements of Cash Flows	Consolidated Statements of Cash Flows
Comprehensive Income	Comprehensive Income
Share-Based Compensation	Share-Based Compensation 3 12-month
Derivatives	Derivative Financial Instruments non-interest non-interest
Reclassifications	Reclassifications
Recent Accounting Pronouncements	FASB ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities The FASB has issued ASU No. 2018-03, Technical Corrections and Improvements to Financial Instruments – Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities 2016-01, FASB ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income The FASB has issued ASU No. 2018-02, Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income in this ASU is permitted, including adoption in any interim period, (1) for public business entities for reporting periods for which financial statements have not yet been issued and (2) for all other entities for reporting periods for which financial statements have not yet been made available for issuance. The amendments in this ASU should be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. At December 31, 2017, the Company had approximately $766,000 stranded tax effects included in AOCI and reclassified to retained earnings at January 1, 2018. FASB ASU No. 2016-02, Leases (Topic 842) The FASB has issued ASU No. 2016-02, Leases (Topic 842). right-of-use As of January 1, 2019, the Company recorded a right-of-use FASB ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities The FASB has issued ASU No. 2016-01, Financial Instruments – Overall (Subtopic 825-10), Recognition and Measurement of Financial Assets and Financial Liabilities. not-for-profit • Requiring 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; • Requiring public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; • Requiring separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (i.e., securities or loans and receivables) on the balance sheet or the accompanying notes to the financial statements; • Eliminating the requirement to disclose the fair value of financial instruments measured at amortized cost for organizations that are not public business entities; • Eliminating the 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 on the balance sheet; and • Requiring a reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk (also referred to as “own credit”) when the organization has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. 78
Revenue Recognition	Revenue Recognition “Revenue from Contracts with Customers” non-interest • Service charges and fees on deposit accounts – these include general service fees charged for deposit account maintenance and activity and transaction-based fees charged for certain services, such as debit card, wire transfer and overdraft activities. Revenue is recognized when the performance obligation is completed, which is generally after a transaction is completed or monthly for account maintenance services. • Fiduciary activities – this includes periodic fees due from trust and wealth management customers for managing the customers’ financial assets. Fees are charged based on a standard agreement and are recognized as they are earned.

Nature of Operations and Summ_3

Nature of Operations and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Computation of Basic and Diluted Earnings Per Share	The following table shows computation of basic and diluted earnings per share Years Ended December 31 2019 2018 2017 Basic earnings per share Net income $ 66,538 $ 53,117 $ 33,117 Weighted average common shares outstanding (1) 43,493,316 38,347,059 34,553,736 Basic earnings per share $ 1.53 $ 1.39 $ 0.96 Diluted earnings per share Net income available to common shareholders $ 66,538 $ 53,117 $ 33,117 Weighted average common shares outstanding (1) 43,493,316 38,347,059 34,553,736 Effect of dilutive securities: Restricted stock 23,006 36,185 46,981 Stock options 81,273 111,987 159,721 Weighted average common shares outstanding 43,597,595 38,495,231 34,760,438 $ 1.53 $ 1.38 $ 0.95 (1) Adjusted for 3:2 stock split on June 15, 2018

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2019
Schedule of Purchase Price of Assets Acquired and Liabilities Assumed	Based on preliminary valuations of the fair value of tangible and intangible assets acquired and liabilities assumed, which are based on estimates and assumptions that are subject to change, the final purchase price for the Salin acquisition is detailed in the following table. Assets Liabilities Cash and due from banks $ 152,745 Deposits Investment securities, available for sale 54,319 Non-interest $ 188,744 NOW accounts 207,567 Loans Savings and money market 274,504 Commercial 352,798 Certificates of deposit 70,529 Residential mortgage 131,008 Total deposits 741,344 Consumer 85,112 Total loans 568,918 Borrowings 70,495 Premises and equipment, net 20,425 Subordinated debentures 18,376 FRB and FHLB stock 3,571 Interest payable 826 Goodwill 31,358 Other liabilities 8,759 Core deposit intangible 19,818 Interest receivable 2,488 Other assets 112,880 Total liabilities assumed $ 839,800 Total assets purchased $ 966,522 Common shares issued $ 102,722 Cash paid 24,000 Total purchase price $ 126,722
Schedule of Acquired Loans Accounted for in Accordance with ASC 310-30	The following table details an estimate of the acquired loans that are accounted for in accordance with ASC 310-30 Contractually required principal and interest at acquisition $ 22,672 Contractual cash flows not expected to be collected (nonaccretable differences) 6,694 Expected cash flows at acquisition 15,978 Interest component of expected cash flows (accretable discount) 735 Fair value of acquired loans accounted for under ASC 310-30 $ 15,243
Pro Forma Result of Comparable Prior Reporting Period	The following schedule includes pro-forma Years Ended December 31 2019 2018 2017 Summary of Operations: Net Interest Income $ 168,693 $ 157,194 $ 153,376 Provision for Loan Losses 2,276 3,706 3,438 Net Interest Income after Provision for Loan Losses 166,417 153,488 149,938 Non-interest 43,472 39,918 42,456 Non-interest 134,446 124,944 138,752 Income before Income Taxes 75,443 68,462 53,642 Income Tax Expense 13,246 10,216 15,978 Net Income $ 62,197 $ 58,246 $ 37,664 Basic Earnings per Share $ 1.43 $ 1.52 $ 1.09 Diluted Earnings per Share $ 1.43 $ 1.51 $ 1.08
Wolverine Bancorp Inc [Member]
Schedule of Purchase Price of Assets Acquired and Liabilities Assumed	Based on preliminary valuations of the fair value of tangible and intangible assets acquired and liabilities assumed, which are based on estimates and assumptions that are subject to change, the final purchase price for the Wolverine acquisition is allocated as follows: Assets Liabilities Cash and due from banks $ 44,450 Deposits Non-interest $ 25,221 Loans NOW accounts 8,026 Commercial 276,167 Savings and money market 129,044 Residential mortgage 30,603 Certificates of deposit 94,688 Consumer 3,897 Total deposits 256,979 Total loans 310,667 Premises and equipment, net 2,941 Borrowings 36,970 FRB and FHLB stock 2,700 Interest payable 214 Goodwill 26,827 Other liabilities 6,154 Core deposit intangible 2,024 Interest receivable 584 Other assets 3,897 Total assets purchased $ 394,090 Total liabilities assumed $ 300,317 Common shares issued $ 62,111 Cash paid 31,662 Total purchase price $ 93,773
Schedule of Acquired Loans Accounted for in Accordance with ASC 310-30	The following table details the acquired loans that are accounted for in accordance with ASC 310-30 Contractually required principal and interest at acquisition $ 21,912 Contractual cash flows not expected to be collected (nonaccretable differences) 1,832 Expected cash flows at acquisition 20,080 Interest component of expected cash flows (accretable discount) 2,267 Fair value of acquired loans accounted for under ASC 310-30 $ 17,813
Lafayette Community Bancorp [Member]
Schedule of Purchase Price of Assets Acquired and Liabilities Assumed	Based on preliminary valuations of the fair value of tangible and intangible assets acquired and liabilities assumed, which are based on assumptions that are subject to change, the purchase price for the Lafayette acquisition is detailed in the following table. Assets Liabilities Cash and due from banks $ 24,846 Deposits Investment securities, available for sale 6 Non-interest $ 34,990 NOW accounts 30,174 Loans Savings and money market 53,663 Commercial 116,258 Certificates of deposit 32,520 Residential mortgage 12,761 Total deposits 151,347 Consumer 5,280 Total loans 134,299 Premises and equipment, net 7,818 Interest payable 42 FHLB stock 395 Other liabilities 990 Goodwill 15,408 Core deposit intangible 2,085 Interest receivable 338 Other assets 1,649 Total assets purchased $ 186,844 Total liabilities assumed $ 152,379 Common shares issued $ 30,044 (1) Cash paid 4,421 Total purchase price $ 34,465 (1) This includes $955,000 of common shares previously held by Horizon.
Schedule of Acquired Loans Accounted for in Accordance with ASC 310-30	The following table details an estimate of the acquired loans that are accounted for in accordance with ASC 310-30 Contractually required principal and interest at acquisition $ 6,128 Contractual cash flows not expected to be collected (nonaccretable differences) 1,326 Expected cash flows at acquisition 4,802 Interest component of expected cash flows (accretable discount) 933 Fair value of acquired loans accounted for under ASC 310-30 $ 3,869

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Fair Value of Securities	The fair value of securities is as follows: December 31, 2019 Amortized Gross Gross Fair Available for sale U.S. Treasury and federal agencies $ 1,415 $ — $ (2 ) $ 1,413 State and municipal 396,931 11,288 (2,451 ) 405,768 Federal agency collateralized mortgage obligations 267,272 2,543 (563 ) 269,252 Federal agency mortgage-backed pools 145,623 1,207 (258 ) 146,572 Corporate notes 10,848 923 — 11,771 Total available for sale investment securities $ 822,089 $ 15,961 $ (3,274 ) $ 834,776 Held to maturity State and municipal $ 190,767 $ 7,129 $ (54 ) $ 197,842 Federal agency collateralized mortgage obligations 4,560 13 (5 ) 4,568 Federal agency mortgage-backed pools 12,572 194 (29 ) 12,737 Total held to maturity investment securities $ 207,899 $ 7,336 $ (88 ) $ 215,147 December 31, 2018 Amortized Gross Gross Fair Available for sale U.S. Treasury and federal agencies $ 16,815 $ 1 $ (208 ) $ 16,608 State and municipal 210,386 1,495 (2,578 ) 209,303 Federal agency collateralized mortgage obligations 187,563 625 (3,185 ) 185,003 Federal agency mortgage-backed pools 183,479 80 (4,823 ) 178,736 Corporate notes 10,666 107 (75 ) 10,698 Total available for sale investment securities $ 608,909 $ 2,308 $ (10,869 ) $ 600,348 Held to maturity State and municipal $ 191,269 $ 1,773 $ (3,366 ) $ 189,676 Federal agency collateralized mortgage obligations 5,144 6 (120 ) 5,030 Federal agency mortgage-backed pools 13,699 74 (206 ) 13,567 Total held to maturity investment securities $ 210,112 $ 1,853 $ (3,692 ) $ 208,273
Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity	The amortized cost and fair value of securities available for sale and held-to-maturity December 31, 2019 December 31, 2018 Amortized Fair Amortized Fair Available for sale Within one year $ 37,386 $ 37,321 $ 20,532 $ 20,448 One to five years 41,230 41,293 42,476 41,705 Five to ten years 117,004 122,145 107,839 107,107 After ten years 213,574 218,193 67,020 67,349 409,194 418,952 237,867 236,609 Federal agency collateralized mortgage obligations 267,272 269,252 187,563 185,003 Federal agency mortgage-backed pools 145,623 146,572 183,479 178,736 Total available for sale investment securities $ 822,089 $ 834,776 $ 608,909 $ 600,348 Held to maturity Within one year $ 7,811 $ 7,874 $ 70 $ 70 One to five years 56,037 57,048 48,732 49,324 Five to ten years 94,756 98,480 101,809 101,533 After ten years 32,163 34,440 40,658 38,749 190,767 197,842 191,269 189,676 Federal agency collateralized mortgage obligations 4,560 4,568 5,144 5,030 Federal agency mortgage-backed pools 12,572 12,737 13,699 13,567 Total held to maturity investment securities $ 207,899 $ 215,147 $ 210,112 $ 208,273
Gross Unrealized Losses and Fair Value of Company's Investments	The following table shows the gross unrealized losses and the fair value of the Company’s investments, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position. December 31, 2019 Less than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized Investment Securities U.S. Treasury and federal agencies $ 1,413 $ (2 ) $ — $ — $ 1,413 $ (2 ) State and municipal 129,942 (2,374 ) 6,279 (131 ) 136,221 (2,505 ) Federal agency collateralized mortgage obligations 68,043 (308 ) 23,301 (260 ) 91,344 (568 ) Federal agency mortgage-backed pools 24,740 (104 ) 37,822 (183 ) 62,562 (287 ) Total temporarily impaired securities $ 224,138 $ (2,788 ) $ 67,402 $ (574 ) $ 291,540 $ (3,362 ) December 31, 2018 Less than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized Investment Securities U.S. Treasury and federal agencies $ — $ — $ 9,707 $ (208 ) $ 9,707 $ (208 ) State and municipal 75,163 (1,628 ) 106,335 (4,316 ) 181,498 (5,944 ) Federal agency collateralized mortgage obligations 6,450 (25 ) 106,257 (3,280 ) 112,707 (3,305 ) Federal agency mortgage-backed pools 5,739 (39 ) 175,865 (4,990 ) 181,604 (5,029 ) Corporate notes 5,263 (75 ) — — 5,263 (75 ) Total temporarily impaired securities $ 92,615 $ (1,767 ) $ 398,164 $ (12,794 ) $ 490,779 $ (14,561 )
Sales of Securities Available for Sale	Information regarding security proceeds, gross gains and gross losses are presented below. Years Ended December 31 2019 2018 2017 Sales of securities available for sale Proceeds $ 98,425 $ 38,519 $ 5,490 Gross gains 168 37 151 Gross losses (243 ) (480 ) (113 )

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2019
Amounts of Loans	December 31 December 31 2019 2018 Commercial Working capital and equipment $ 938,317 $ 804,083 Real estate, including agriculture 978,891 834,037 Tax exempt 63,571 48,975 Other 65,872 34,495 Total 2,046,651 1,721,590 Real estate 1-4 762,571 659,754 Other 8,146 8,387 Total 770,717 668,141 Consumer Auto 362,729 327,413 Recreation 16,262 13,975 Real estate/home improvement 43,585 39,587 Home equity 237,979 163,209 Unsecured 7,286 4,043 Other 1,339 1,254 Total 669,180 549,481 Mortgage warehouse 150,293 74,120 Total loans 3,636,841 3,013,332 Allowance for loan losses (17,667 ) (17,820 ) Loans, net $ 3,619,174 $ 2,995,512
Recorded Investment of Individual Loan Categories	The following table shows the recorded investment of individual loan categories. December 31, 2019 Loan Interest Deferred (Fees) Recorded Owner occupied real estate $ 519,577 $ 784 $ (148 ) $ 520,213 Non-owner 973,331 1,752 (763 ) 974,320 Residential spec homes 12,925 15 (2 ) 12,938 Development & spec land 35,954 101 (14 ) 36,041 Commercial and industrial 505,859 4,600 (68 ) 510,391 Total commercial 2,047,646 7,252 (995 ) 2,053,903 Residential mortgage 751,019 2,245 12 753,276 Residential construction 19,686 40 — 19,726 Mortgage warehouse 150,293 242 — 150,535 Total real estate 920,998 2,527 12 923,537 Direct installment 41,079 148 678 41,905 Indirect installment 348,658 911 — 349,569 Home equity 276,215 1,304 2,550 280,069 Total consumer 665,952 2,363 3,228 671,543 Total loans 3,634,596 12,142 2,245 3,648,983 Allowance for loan losses (17,667 ) — — (17,667 ) Net loans $ 3,616,929 $ 12,142 $ 2,245 $ 3,631,316 December 31, 2018 Loan Interest Deferred (Fees) Recorded Owner occupied real estate $ 444,834 $ 931 $ (130 ) $ 445,635 Non-owner 852,855 1,436 (747 ) 853,544 Residential spec homes 5,195 13 — 5,208 Development & spec land 50,706 153 (15 ) 50,844 Commercial and industrial 368,962 3,063 (70 ) 371,955 Total commercial 1,722,552 5,596 (962 ) 1,727,186 Residential mortgage 644,094 1,861 17 645,972 Residential construction 24,030 42 — 24,072 Mortgage warehouse 74,120 132 — 74,252 Total real estate 742,244 2,035 17 744,296 Direct installment 35,103 108 593 35,804 Indirect installment 314,177 738 — 314,915 Home equity 197,494 968 2,114 200,576 Total consumer 546,774 1,814 2,707 551,295 Total loans 3,011,570 9,445 1,762 3,022,777 Allowance for loan losses (17,820 ) — — (17,820 ) Net loans $ 2,993,750 $ 9,445 $ 1,762 $ 3,004,957

Accounting for Certain Loans _2

Accounting for Certain Loans Acquired in a Transfer (Tables)	12 Months Ended
	Dec. 31, 2019
Carrying Amounts of Loans	The carrying amounts of those loans included in the balance sheet amounts of loans receivable are as follows: December 31, 2019 Commercial Real Estate Consumer Outstanding Allowance Carrying Heartland $ 197 $ 99 $ — $ 296 $ — $ 296 Summit 88 473 — 561 — 561 Peoples 229 35 — 264 — 264 Kosciusko 244 131 — 375 — 375 LaPorte 353 793 20 1,166 — 1,166 Lafayette 1,867 — — 1,867 — 1,867 Wolverine 2,289 — — 2,289 — 2,289 Salin 4,938 1,912 962 7,812 133 7,679 Total $ 10,205 $ 3,443 $ 982 $ 14,630 $ 133 $ 14,497 December 31, 2018 Commercial Real Estate Consumer Outstanding Allowance Carrying Heartland $ 232 $ 175 $ — $ 407 $ — $ 407 Summit 323 555 — 878 — 878 Peoples 270 58 — 328 — 328 Kosciusko 746 155 — 901 — 901 LaPorte 753 947 27 1,727 60 1,667 Lafayette 3,080 — — 3,080 — 3,080 Wolverine 7,841 — — 7,841 — 7,841 Total $ 13,245 $ 1,890 $ 27 $ 15,162 $ 60 $ 15,102
Accretable Yield or Income Expected to be Collected	Accretable yield, or income expected to be collected are as follows: Twelve Months Ended December 31, 2019 Beginning Additions Accretion Reclassification Disposals Ending Heartland $ 174 $ — $ (32 ) $ — $ — $ 142 Summit 42 — (9 ) — (11 ) 22 Kosciusko 300 — (63 ) — (2 ) 235 LaPorte 829 — (111 ) — 4 722 Lafayette 609 — (126 ) — (193 ) 290 Wolverine 698 — (272 ) — (306 ) 120 Salin — 2,002 (590 ) — (37 ) 1,375 Total $ 2,652 $ 2,002 $ (1,203 ) $ — $ (545 ) $ 2,906 Twelve Months Ended December 31, 2018 Beginning Additions Accretion Reclassification Disposals Ending Heartland $ 452 $ — $ (85 ) $ — $ (193 ) $ 174 Summit 147 — (54 ) — (51 ) 42 Kosciusko 386 — (78 ) — (8 ) 300 LaPorte 980 — (144 ) — (7 ) 829 Lafayette 933 — (275 ) — (49 ) 609 Wolverine 2,267 — (812 ) — (757 ) 698 Total $ 5,165 $ — $ (1,448 ) $ — $ (1,065 ) $ 2,652

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Allowance for Loan Losses	The actual allowance for loan loss activity is provided below. Years Ended December 31 2019 2018 2017 Balance at beginning of the period $ 17,820 $ 16,394 $ 14,837 Loans charged-off: Commercial Owner occupied real estate 41 109 12 Non-owner 64 — 75 Residential spec homes 3 — — Development & spec land — — 1 Commercial and industrial 755 364 541 Total commercial 863 473 629 Real estate Residential mortgage 93 76 89 Residential construction — — — Mortgage warehouse — — — Total real estate 93 76 89 Consumer Direct installment 208 154 137 Indirect installment 1,785 1,673 1,193 Home equity 319 176 205 Total consumer 2,312 2,003 1,535 Total loans charged-off 3,268 2,552 2,253 Recoveries of loans previously charged-off: Commercial Owner occupied real estate — 55 8 Non-owner 15 33 32 Residential spec homes 5 8 8 Development & spec land — — — Commercial and industrial 179 80 250 Total commercial 199 176 298 Real estate Residential mortgage 46 27 44 Residential construction — — — Mortgage warehouse — — — Total real estate 46 27 44 Consumer Direct installment 97 53 501 Indirect installment 661 505 497 Home equity 136 311 — Total consumer 894 869 998 Total loan recoveries 1,139 1,072 1,340 Net loans charged-off 2,129 1,480 913 Provision charged to operating expense Commercial 2,165 1,699 2,164 Real estate (635 ) (487 ) (81 ) Consumer 446 1,694 387 Total provision charged to operating expense 1,976 2,906 2,470 Balance at the end of the period $ 17,667 $ 17,820 $ 16,394
Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment	The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment analysis: December 31, 2019 Commercial Real Estate Mortgage Consumer Total Allowance For Loan Losses Ending allowance balance attributable to loans: Individually evaluated for impairment $ 541 $ — $ — $ — $ 541 Collectively evaluated for impairment 11,455 923 1,077 3,671 17,126 Loans acquired with deteriorated credit quality — — — — — Total ending allowance balance $ 11,996 $ 923 $ 1,077 $ 3,671 $ 17,667 Loans: Individually evaluated for impairment $ 7,347 $ — $ — $ — $ 7,347 Collectively evaluated for impairment 2,040,299 770,705 150,293 665,952 3,627,249 Loans acquired with deteriorated credit quality — — — — — Total ending loans balance $ 2,047,646 $ 770,705 $ 150,293 $ 665,952 $ 3,634,596 December 31, 2018 Commercial Real Estate Mortgage Consumer Total Allowance For Loan Losses Ending allowance balance attributable to loans: Individually evaluated for impairment $ 1,035 $ — $ — $ — $ 1,035 Collectively evaluated for impairment 9,460 1,676 1,006 4,643 16,785 Loans acquired with deteriorated credit quality — — — — — Total ending allowance balance $ 10,495 $ 1,676 $ 1,006 $ 4,643 $ 17,820 Loans: Individually evaluated for impairment $ 6,696 $ — $ — $ — $ 6,696 Collectively evaluated for impairment 1,715,856 668,124 74,120 546,774 3,004,874 Loans acquired with deteriorated credit quality — — — — — Total ending loans balance $ 1,722,552 $ 668,124 $ 74,120 $ 546,774 $ 3,011,570

Non-performing Assets and Imp_2

Non-performing Assets and Impaired Loans (Tables)	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Non-accrual, Loans Past Due Over 90 Days Still on Accrual, and Troubled Debt Restructured ("TDRs") by Class of Loans	The following table presents the nonaccrual, loans past due over 90 days still on accrual, and troubled debt restructured (“TDRs”) by class of loans: December 31, 2019 Non-accrual Loans Past Non-peforming Performing Total Non-performing Commercial Owner occupied real estate $ 2,424 $ — $ 629 $ 139 $ 3,192 Non-owner 682 — 374 — 1,056 Residential spec homes — — — — — Development & spec land 73 — — — 73 Commercial and industrial 1,603 — 78 1,345 3,026 Total commercial 4,782 — 1,081 1,484 7,347 Real estate Residential mortgage 7,614 1 708 1,561 9,884 Residential construction — — — — — Mortgage warehouse — — — — — Total real estate 7,614 1 708 1,561 9,884 Consumer Direct installment 30 5 — — 35 Indirect installment 1,234 135 — — 1,369 Home equity 2,019 5 217 309 2,550 Total consumer 3,283 145 217 309 3,954 Total $ 15,679 $ 146 $ 2,006 $ 3,354 $ 21,185 December 31, 2018 Non-accrual Loans Past Non-peforming Performing Total Non-performing Commercial Owner occupied real estate $ 3,531 $ 208 $ — $ 109 $ 3,848 Non-owner 554 — 492 — 1,046 Residential spec homes — — — — — Development & spec land 68 — — — 68 Commercial and industrial 1,941 — — — 1,941 Total commercial 6,094 208 492 109 6,903 Real estate Residential mortgage 2,846 180 423 1,558 5,007 Residential construction — — — — — Mortgage warehouse — — — — — Total real estate 2,846 180 423 1,558 5,007 Consumer Direct installment 35 — — — 35 Indirect installment 916 173 — — 1,089 Home equity 1,657 7 142 335 2,141 Total consumer 2,608 180 142 335 3,265 Total $ 11,548 $ 568 $ 1,057 $ 2,002 $ 15,175
Commercial Loans Individually Evaluated for Impairment by Class of Loans	The following table presents commercial loans individually evaluated for impairment by class of loans: December 31, 2019 Twelve Months Ended Unpaid Recorded Allowance for Loan Loss Average Cash/Accrual With no recorded allowance Commercial Owner occupied real estate $ 3,192 $ 3,193 $ — $ 3,608 $ 246 Non-owner 937 937 — 2,810 98 Residential spec homes — — — — — Development & spec land 73 73 — 158 — Commercial and industrial 1,859 1,861 — 2,464 100 Total commercial 6,061 6,064 — 9,040 444 With an allowance recorded Commercial Owner occupied real estate — — — — — Non-owner 119 119 25 130 — Residential spec homes — — — — — Development & spec land — — — — — Commercial and industrial 1,167 1,168 516 1,225 46 Total commercial 1,286 1,287 541 1,355 46 Total $ 7,347 $ 7,351 $ 541 $ 10,395 $ 490 December 31, 2018 Twelve Months Ended Unpaid Recorded Allowance for Average Cash/Accrual With no recorded allowance Commercial Owner occupied real estate $ 2,814 $ 2,815 $ — $ 3,168 $ 77 Non-owner 860 860 — 1,096 12 Residential spec homes — — — — — Development & spec land 68 68 — 71 — Commercial and industrial 1,226 1,226 — 1,119 21 Total commercial 4,968 4,969 — 5,454 110 With an allowance recorded Commercial Owner occupied real estate 827 827 145 864 — Non-owner 186 186 30 180 4 Residential spec homes — — — — — Development & spec land — — — — — Commercial and industrial 715 715 860 870 14 Total commercial 1,728 1,728 1,035 1,914 18 Total $ 6,696 $ 6,697 $ 1,035 $ 7,368 $ 128 December 31, 2017 Twelve Months Ended Unpaid Recorded Allowance for Average Cash/Accrual With no recorded allowance Commercial Owner occupied real estate $ 1,255 $ 1,270 $ — $ 1,168 $ 4 Non-owner 3,123 3,139 — 850 7 Residential spec homes — — — — — Development & spec land 176 176 — 233 4 Commercial and industrial 1,656 1,656 — 1,445 25 Total commercial 6,210 6,241 — 3,696 40 With an allowance recorded Commercial Owner occupied real estate 704 704 78 59 33 Non-owner 227 227 106 19 13 Residential spec homes — — — — — Development & spec land — — — — — Commercial and industrial — — — — — Total commercial 931 931 184 78 46 Total $ 7,141 $ 7,172 $ 184 $ 3,774 $ 86
Payment Status by Class of Loan	The following table presents the payment status by class of loans: December 31, 2019 Current 30-59 60-89 90 Days or Non-accrual Non-peforming Total Past Due Non-accrual Total Commercial Owner occupied real estate $ 515,604 $ 920 $ — $ — $ 3,053 $ 3,973 $ 519,577 Non-owner 972,195 80 — — 1,056 1,136 973,331 Residential spec homes 12,925 — — — — — 12,925 Development & spec land 35,881 — — — 73 73 35,954 Commercial and industrial 503,348 819 11 — 1,681 2,511 505,859 Total commercial 2,039,953 1,819 11 — 5,863 7,693 2,047,646 Real estate Residential mortgage 740,712 1,984 — 1 8,322 10,307 751,019 Residential construction 19,686 — — — — — 19,686 Mortgage warehouse 150,293 — — — — — 150,293 Total real estate 910,691 1,984 — 1 8,322 10,307 920,998 Consumer Direct installment 40,864 175 5 5 30 215 41,079 Indirect installment 344,478 2,407 404 135 1,234 4,180 348,658 Home equity 273,050 904 20 5 2,236 3,165 276,215 Total consumer 658,392 3,486 429 145 3,500 7,560 665,952 Total $ 3,609,036 $ 7,289 $ 440 $ 146 $ 17,685 $ 25,560 $ 3,634,596 Percentage of total loans 99.30 % 0.20 % 0.01 % 0.00 % 0.49 % 0.70 % 100.00 % December 31, 2018 Current 30-59 60-89 90 Days or Non-accrual Non-peforming Total Past Due Non-accrual Total Commercial Owner occupied real estate $ 439,542 $ 537 $ 1,016 $ 208 $ 3,531 $ 5,292 $ 444,834 Non-owner 851,587 203 19 — 1,046 1,268 852,855 Residential spec homes 4,703 492 — — — 492 5,195 Development & spec land 50,638 — — — 68 68 50,706 Commercial and industrial 365,817 487 717 — 1,941 3,145 368,962 Total commercial 1,712,287 1,719 1,752 208 6,586 10,265 1,722,552 Real estate Residential mortgage 639,458 1,131 56 180 3,269 4,636 644,094 Residential construction 24,030 — — — — — 24,030 Mortgage warehouse 74,120 — — — — — 74,120 Total real estate 737,608 1,131 56 180 3,269 4,636 742,244 Consumer Direct installment 34,957 93 18 — 35 146 35,103 Indirect installment 311,494 1,396 198 173 916 2,683 314,177 Home equity 194,890 761 37 7 1,799 2,604 197,494 Total consumer 541,341 2,250 253 180 2,750 5,433 546,774 Total $ 2,991,236 $ 5,100 $ 2,061 $ 568 $ 12,605 $ 20,334 $ 3,011,570 Percentage of total loans 99.32 % 0.17 % 0.07 % 0.02 % 0.42 % 0.68 % 100.00 %
Loans by Credit Grades	The following table presents loans by credit grades. December 31, 2019 Pass Special Substandard Doubtful Total Commercial Owner occupied real estate $ 492,386 $ 8,328 $ 18,863 $ — $ 519,577 Non-owner 957,990 7,824 7,517 — 973,331 Residential spec homes 12,925 — — — 12,925 Development & spec land 35,815 — 139 — 35,954 Commercial and industrial 468,893 18,652 18,314 — 505,859 Total commercial 1,968,009 34,804 44,833 — 2,047,646 Real estate Residential mortgage 741,136 — 9,883 — 751,019 Residential construction 19,686 — — — 19,686 Mortgage warehouse 150,293 — — — 150,293 Total real estate 911,115 — 9,883 — 920,998 Consumer Direct installment 41,044 — 35 — 41,079 Indirect installment 347,289 — 1,369 — 348,658 Home equity 273,665 — 2,550 — 276,215 Total consumer 661,998 — 3,954 — 665,952 Total $ 3,541,122 $ 34,804 $ 58,670 $ — $ 3,634,596 Percentage of total loans 97.43 % 0.96 % 1.61 % 0.00 % 100.00 % December 31, 2018 Pass Special Substandard Doubtful Total Commercial Owner occupied real estate $ 426,887 $ 3,664 $ 14,283 $ — $ 444,834 Non-owner 834,582 9,682 8,591 — 852,855 Residential spec homes 5,195 — — — 5,195 Development & spec land 47,523 3,115 68 — 50,706 Commercial and industrial 354,630 6,591 7,741 — 368,962 Total commercial 1,668,817 23,052 30,683 — 1,722,552 Real estate Residential mortgage 639,267 — 4,827 — 644,094 Residential construction 24,030 — — — 24,030 Mortgage warehouse 74,120 — — — 74,120 Total real estate 737,417 — 4,827 — 742,244 Consumer Direct installment 35,068 — 35 — 35,103 Indirect installment 313,088 — 1,089 — 314,177 Home equity 195,353 — 2,141 — 197,494 Total consumer 543,509 — 3,265 — 546,774 Total $ 2,949,743 $ 23,052 $ 38,775 $ — $ 3,011,570 Percentage of total loans 97.95 % 0.76 % 1.29 % 0.00 % 100.00 %

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Summary of Premises and Equipment	December 31 December 31 2019 2018 Land $ 27,292 $ 21,604 Buildings and improvements 83,669 69,590 Furniture and equipment 27,482 24,596 Total cost 138,443 115,790 Accumulated depreciation (46,234 ) (41,459 ) Net premises and equipment $ 92,209 $ 74,331

Loan Servicing (Tables)

Loan Servicing (Tables)	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Originated Mortgage Servicing Rights	December 31 December 31 December 31 2019 2018 2017 Mortgage servicing rights Balances, January 1 $ 12,876 $ 12,189 $ 11,681 Servicing rights capitalized 3,547 1,883 2,109 Amortization of servicing rights (1,377 ) (1,196 ) (1,601 ) Balances, December 31 15,046 12,876 12,189 Impairment allowance Balances, January 1 (527 ) (587 ) (507 ) Additions (234 ) (78 ) (85 ) Reductions 42 138 5 Balances, December 31 (719 ) (527 ) (587 ) Mortgage servicing rights, net $ 14,327 $ 12,349 $ 11,602

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	For additional details related to impairment testing, see the “Goodwill and Intangible Assets” section of “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included as Item 7 of this Annual Report on Form 10K. December 31 December 31 2019 2018 Balance, January 1 $ 119,880 $ 119,880 Goodwill acquired 31,358 — Balance, December 31 $ 151,238 $ 119,880
Amortizable Intangible Assets	Amortizable intangible assets are summarized as follows: December 31, 2019 December 31, 2018 Gross Carrying Accumulated Gross Carrying Accumulated Amortizable intangible assets Core deposit intangible $ 40,590 $ (13,911 ) $ 20,711 $ (10,321 )
Estimated Amortization	Estimated amortization for the years ending December 31 is as follows 2020 $ 3,723 2021 3,591 2022 3,516 2023 3,430 2024 3,225 Thereafter 9,194 $ 26,679

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Schedule Of Future Minimum Rental Payments For Operating Leases	Future minimum operating lease payments under non-cancellable Year Amount 2020 $ 476 2021 476 2022 504 2023 504 2024 and thereafter 1,105 Total lease payments $ 3,065 Less: Interest (51 ) Present value of lease liabilities $ 3,014

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2019
Banking and Thrift [Abstract]
Deposits	December 31 December 31 2019 2018 Noninterest-bearing demand deposits $ 709,760 $ 642,129 Interest-bearing demand deposits 1,159,296 864,026 Money market (variable rate) 522,382 420,123 Savings deposits 563,952 400,187 Certificates of deposit of $250,000 or more 461,435 371,824 Other certificates and time deposits 514,177 441,087 Total deposits $ 3,931,002 $ 3,139,376
Certificates and Other Time Deposits for Both Retail and Brokered	Certificates and other time deposits for both re t Retail Brokered Total 2020 $ 722,672 $ 24,350 $ 747,022 2021 102,449 20,508 122,957 2022 32,925 15,256 48,181 2023 16,527 16,648 33,175 2024 22,995 — 22,995 Thereafter 1,282 — 1,282 $ 898,850 $ 76,762 $ 975,612

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Borrowings	December 31 December 31 2019 2018 Federal Home Loan Bank advances, variable and fixed rates ranging from 0.68% to 7.53%, due at various dates through August 20, 2029 $ 390,800 $ 356,579 Securities sold under agreements to repurchase 90,941 52,116 Federal funds purchased 68,000 141,689 Total borrowings $ 549,741 $ 550,384
Contractual Maturities	Contractual maturities in years ending December 31 are as follows: 2020 $ 276,970 2021 15,102 2022 52,222 2023 183 2024 80,116 Thereafter 125,148 $ 549,741

Repurchase Agreements (Tables)

Repurchase Agreements (Tables)	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Summary of Repurchase Agreements Accounted as Secured Borrowings	The following table shows repurchase agreements accounted for as secured borrowings: December 31, 2019 Remaining Contractual Maturity of the Agreements Overnight Up to one One to three Three to five Five to ten Beyond ten Total Repurchase Agreements and Repurchase Agreements $ 90,941 $ — $ — $ — $ — $ — $ 90,941 Securities pledged for Federal agency collateralized $ 35,537 $ — $ — $ — $ — $ — $ 35,537 Federal agency 71,234 — — — — — 71,234 Total $ 106,771 $ — $ — $ — $ — $ — $ 106,771

Income Tax (Tables)

Income Tax (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Reconciliation of Income Taxes	December 31 December 31 December 31 2019 2018 2017 Income tax expense Currently payable Federal $ 11,143 $ 9,166 $ 12,079 State 140 — — Deferred Federal 1,787 1,277 331 State 233 — — Revaluation of deferred tax assets — — 2,426 Total income tax expense $ 13,303 $ 10,443 $ 14,836 Reconciliation of federal statutory to actual tax expense Federal statutory income tax at 21% in 201 9 2 018 35% in 2017 $ 16,767 $ 13,348 $ 16,783 Tax exempt interest (2,977 ) (1,982 ) (2,699 ) Tax exempt income (587 ) (448 ) (638 ) Stock compensation (324 ) (384 ) (546 ) Revaluation of deferred tax assets — — 2,426 Other tax exempt income (313 ) (260 ) (456 ) State tax 295 — — Nondeductible and other 442 169 (34 ) Actual tax expense $ 13,303 $ 10,443 $ 14,836
Reconciliation of Deferred Tax Assets & Liabilities	December 31 December 31 2019 2018 Assets Allowance for loan losses $ 4,120 $ 3,831 Net operating loss and tax credits (from acquisitions) 54 1,038 Director and employee benefits 1,890 2,392 Unrealized loss on AFS securities and fair value hedge — 2,165 Accrued pension 775 801 Fair value adjustment on acquisitions — — Other 2,145 670 Total assets 8,984 10,897 Liabilities Depreciation (4,456 ) (1,850 ) State tax (10 ) (137 ) Federal Home Loan Bank stock dividends (368 ) (330 ) Difference in basis of intangible assets (3,427 ) (2,919 ) Fair value adjustment on acquisitions (2,488 ) (62 ) Unrealized gain on AFS securities and fair value hedge (1,710 ) — Other (63 ) (119 ) Total liabilities (12,522 ) (5,417 ) Valuation allowance — (1,038 ) Net deferred tax asset/(liability) $ (3,538 ) $ 4,442

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Components of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss included in capital are as follows: December 31 December 31 2019 2018 Unrealized gain (loss) on securities available for sale $ 12,687 $ (8,561 ) Unamortized gain (loss) on securities held to maturity, previously transferred from AFS (107 ) 10 Unrealized loss on derivative instruments (4,440 ) (1,760 ) Tax effect (1,708 ) 2,167 Total accumulated other comprehensive income (loss) $ 6,432 $ (8,144 )

Regulatory Capital (Tables)

Regulatory Capital (Tables)	12 Months Ended
	Dec. 31, 2019
Banking and Thrift [Abstract]
Summary of Regulatory Capital Requirement	There is no threshold for well-capitalized status for bank holding companies. Horizon and the Bank’s actual and required capital ratios as of December 31, 2019 and 2018 were as follows: Actual Required for Capital 1 Required For Capital 1 Well Capitalized Under 1 Amount Ratio Amount Ratio Amount Ratio Amount Ratio December 31, 2019 Total capital 1 Consolidated $ 548,364 13.95 % $ 314,395 8.00 % $ 412,644 10.50 % N/A N/A Bank 497,227 12.65 % 314,452 8.00 % 412,718 10.50 % $ 393,065 10.00 % Tier 1 capital 1 Consolidated 530,643 13.50 % 235,796 6.00 % 334,044 8.50 % N/A N/A Bank 479,506 12.20 % 235,823 6.00 % 334,082 8.50 % 314,430 8.00 % Common equity tier 1 capital 1 Consolidated 473,150 12.04 % 176,846 4.50 % 275,094 7.00 % N/A N/A Bank 479,506 12.20 % 176,867 4.50 % 275,126 7.00 % 255,475 6.50 % Tier 1 capital 1 Consolidated 530,643 10.50 % 202,111 4.00 % 202,111 4.00 % N/A N/A Bank 479,506 9.49 % 202,110 4.00 % 202,110 4.00 % 252,638 5.00 % December 31, 2018 Total capital 1 Consolidated $ 427,616 13.39 % $ 255,419 8.00 % $ 315,283 9.875 % N/A N/A Bank 396,755 12.43 % 255,419 8.00 % 315,283 9.875 % $ 319,274 10.00 % Tier 1 capital 1 Consolidated 409,760 12.83 % 191,565 6.00 % 251,429 7.875 % N/A N/A Bank 378,899 11.87 % 191,565 6.00 % 251,429 7.875 % 255,420 8.00 % Common equity tier 1 capital 1 Consolidated 371,297 11.63 % 143,673 4.50 % 203,537 6.375 % N/A N/A Bank 378,899 11.87 % 143,674 4.50 % 203,537 6.375 % 207,528 6.50 % Tier 1 capital 1 Consolidated 409,760 10.12 % 162,033 4.00 % 162,033 4.000 % N/A N/A Bank 378,899 9.34 % 162,327 4.00 % 162,327 4.000 % 202,908 5.00 %

Share-Based Compensation (Table

Share-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value of Options Granted	The fair value of options granted is estimated on the date of the grant using an option-pricing model with the following weighted-average assumptions: Years Ended December 31 2019 2018 2017 Dividend yields 2.39 % 1.99 % 1.75 % Volatility factors of expected market price of common stock 28.67 % 28.60 % 28.52 % Risk-free interest rates 2.61 % 2.85 % 2.42 % Expected life of options 8 years 8 years 8 years
Summary of Status of Non-vested, Restricted and Performance Shares	A summary of the status of Horizon’s non-vested Shares Weighted Non-vested, 176,538 $ 16.90 Vested (43,358 ) 11.17 Granted 84,526 16.74 Forfeited (4,137 ) 18.23 Non-vested, 213,569 17.97
Stock Options 2003 Plan [Member]
Summary of Option Activity under 2003 Plan	A summary of option activity under the 2003 Plan as of December 31, 2019, and changes during the year then ended, is presented below: Shares Weighted- Weighted- Aggregate Outstanding, beginning of year 21,300 $ 5.03 Granted — — Exercised (8,625 ) 4.45 Forfeited — — Outstanding, end of year 12,675 5.42 1.04 $ 172,096 Exercisable, end of year 12,675 5.42 1.04 172,096
Stock Options 2013 Plan [Member]
Summary of Option Activity under 2003 Plan	A summary of option activity under the 2013 Plan as of December 31, 2019, and changes during the year then ended, is presented below: Shares Weighted- Weighted- Aggregate Outstanding, beginning of year 307,317 $ 12.28 Granted 35,966 16.74 Exercised (24,256 ) 9.75 Forfeited (2,250 ) 10.38 Outstanding, end of year 316,777 12.99 6.37 $ 1,822,924 Exercisable, end of year 242,814 11.58 5.74 1,802,010 The weighted average grant-date fair value of options granted during the years 2019, 2018 and 2017 was $4.44, $5.54 and $4.83.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Financial Instruments	The following tables summarize the fair value of derivative financial instruments utilized by Horizon: Asset Derivatives Liability Derivatives December 31, 2019 December 31, 2019 Balance Sheet Fair Balance Sheet Fair Derivatives designated as hedging instruments Interest rate contracts Other a $ 11,422 Other liabilities $ 15,861 Total derivatives desginated as hedging instruments 11,422 15,861 Derivatives not designated as hedging instruments Mortgage loan contracts Other assets 264 Other liabilities 38 Total derivatives not designated as hedging instruments 264 38 Total derivatives $ 11,686 $ 3,745 Asset Derivatives Liability Derivatives December 31, 2018 December 31, 2018 Balance Sheet Fair Balance Sheet Fair Derivatives designated as hedging instruments Interest rate contracts Other a $ 42 Other liabilities $ 1,802 Total derivatives desginated as hedging instruments 42 1,802 Derivatives not designated as hedging instruments Mortgage loan contracts Other assets 135 Other liabilities — Total derivatives not designated as hedging instruments 135 — Total derivatives $ 177 $ 1,802
Effect of Derivative Instruments on Condensed Consolidated Statement of Income Derivative in Cash Flow Hedging Relationship	The effect of the derivative instruments on the consolidated statement of income for the 12-month Amount of (Gain) Loss Recognized in Other Comprehensive Years Ended December 31 2019 2018 2017 Derivatives in cash flow hedging relationship Interest rate contracts $ (2,117 ) $ (25 ) $ 913
Effect of Derivative Instruments on Consolidated Statement of Income Derivative in Fair Value Hedging Relationship	Location of gain (loss) Amount of Gain (Loss) Recognized on Derivative Years Ended December 31 derivative 2019 2018 2017 Derivative in fair value hedging relationship Interest rate contracts Interest income - $ (11,380 ) $ (852 ) $ (817 ) Interest rate contracts Interest 11,380 852 817 Total $ — $ — $ — Location of gain (loss) Amount of Gain (Loss) Recognized on Derivative Years Ended December 31 derivative 2019 2018 2017 Derivative not designated as hedging relationship Mortgage contracts Other income - gain on sale of loans $ 91 $ (5 ) $ (439 )

Disclosures about fair value _2

Disclosures about fair value of assets and liabilities (Tables)	12 Months Ended
	Dec. 31, 2019
Text Block [Abstract]
Fair Value Measurements of Assets and Liabilities Recognized on a Recurring Basis	The following table presents the fair value measurements of assets and liabilities recognized in the accompanying financial statements measured at fair value on a recurring basis and the level within the FASB ASC fair value hierarchy in which the fair value measurements fall at the following: December 31, 2019 Fair Value Quoted Prices in Significant Significant Available for sale securities U.S. Treasury and federal agencies $ 1,413 $ — $ 1,413 $ — State and municipal 405,768 — 405,768 — Federal agency collateralized mortgage obligations 269,252 — 269,252 — Federal agency mortgage-backed pools 146,572 — 146,572 — Corporate notes 11,771 — 11,771 — Total available for sale securities 834,776 — 834,776 — Interest rate swap agreements asset 11,422 — 11,422 — Forward sale commitments 264 — 264 — Interest rate swap agreements liability (15,861 ) — (15,861 ) — Commitments to originate loans (38 ) — (38 ) — December 31, 2018 Fair Value Quoted Prices in Significant Significant Available for sale securities U.S. Treasury and federal agencies $ 16,608 $ — $ 16,608 $ — State and municipal 209,303 — 209,303 — Federal agency collateralized mortgage obligations 185,003 — 185,003 — Federal agency mortgage-backed pools 178,736 — 178,736 — Corporate notes 10,698 — 10,698 — Total available for sale securities 600,348 — 600,348 — Interest rate swap agreements asset 42 — 42 — Forward sale commitments 135 — 135 — Interest rate swap agreements liability (1,801 ) — (1,801 ) — Commitments to originate loans — — — —
Realized Gains and Losses Included in Net Income for Periods in Consolidated Statements of Income	Realized gains and losses included in net inc o Years Ended December 31 Non-interest 2019 2018 2017 Total gains and losses from: Hedged loans $ (11,380 ) $ (852 ) $ (817 ) Fair value interest rate swap agreements 11,380 852 817 Derivative loan commitments 91 (5 ) (439 ) $ 91 $ (5 ) $ (439 )
Other Assets Measured at Fair Value on Nonrecurring Basis	Certain other assets are measured at fair value on a nonrecurring basis in the ordinary course of business and are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment): Fair Quoted Prices in Significant Significant December 31, 2019 Impaired loans $ 6,806 $ — $ — $ 6,806 Mortgage servicing rights 14,327 — — 14,327 December 31, 2018 Impaired loans $ 5,661 $ — $ — $ 5,661 Mortgage servicing rights 12,349 — — 12,349
Qualitative Information About Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements, Other than Goodwill	The following table presents qualitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements, other than goodwill, at December 31, 2019 and 2018. December 31, 2019 Fair Valuation Unobservable Range Value Technique Inputs (Weighted Average) Impaired loans $ 6,806 Collateral based measurement Discount to reflect current market 0%-100% Mortgage servicing rights 14,327 Discounted cash flows Discount rate, 8.7%-9.0% 10.2%-19.8% ( %), 0.1%-2.9% December 31, 2018 Fair Valuation Unobservable Range Value Technique Inputs (Weighted Average) Impaired loans $ 5,661 Collateral based measurement Discount to reflect current market 0%-100% Mortgage servicing rights 12,349 Discounted cash flows Discount rate, 10.2%-11.0% ( 9.1%-21.9% 0.1%-2.8%

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Summary of Estimated Fair Values of Financial Instruments	The following table presents estimated fair values of the Company’s financial instruments and the level within the fair value hierarchy in which the fair value measurements fall. December 31, 2019 Carrying Quoted Prices in Significant Significant Assets Cash and due from banks $ 98,831 $ 98,831 $ — $ — Interest-earning time deposits 8,455 — 8,537 — Investment securities, held to maturity 207,899 — 215,147 — Loans held for sale 4,088 — — 4,088 Loans (excluding loan level hedges), net 3,619,174 — — 3,554,951 Stock in FHLB 22,447 — 22,447 — Interest receivable 18,828 — 18,828 — Liabilities Non-interest $ 709,760 $ 709,760 $ — $ — Interest bearing deposits 3,221,242 — 3,180,768 — Borrowings 549,741 — 546,995 — Subordinated debentures 56,311 — 51,809 — Interest payable 3,062 — 3,062 — December 31, 2018 Carrying Quoted Prices in Significant Significant Assets Cash and due from banks $ 58,492 $ 58,492 $ — $ — Interest-earning time deposits 15,744 — 15,542 — Investment securities, held to maturity 210,112 — 208,273 — Loans held for sale 1,038 — — 1,038 Loans (excluding loan level hedges), net 2,786,351 — — 2,681,741 Stock in FHLB 18,073 — 18,073 — Interest receivable 14,239 — 14,239 — Liabilities Non-interest $ 642,129 $ 642,129 $ — $ — Interest bearing deposits 2,497,247 — 2,377,274 — Borrowings 550,384 — 542,311 — Subordinated debentures 37,837 — 35,711 — Interest payable 2,031 — 2,031 —

Condensed Financial Informati_2

Condensed Financial Information (Parent Company Only) (Tables)	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheets	Presented below is condensed financial information as to financial position, results of operations and cash flows of Horizon Bancorp, Inc.: Condensed Balance Sheets December 31 December 31 2019 2018 Assets Total cash and cash equivalents $ 50,961 $ 30,653 Investment in subsidiaries 666,639 502,844 Other assets 3,882 1,186 Total assets $ 721,482 $ 534,683 Liabilities Subordinated debentures $ 56,311 $ 37,837 Other liabilities 9,148 4,854 Stockholders’ Equity 656,023 491,992 Total liabilities and stockholders’ equity $ 721,482 $ 534,683
Condensed Statements of Income	Condensed Statements of Income Years Ended December 31 2019 2018 2017 Operating Income (Expense) Dividend income from subsidiaries $ 46,150 $ 46,950 $ 27,000 Other income — — 540 Interest expense (3,209 ) (2,475 ) (2,791 ) Employee benefit expense (1,687 ) (1,423 ) (1,094 ) Other expense (416 ) (357 ) (326 ) Income Before Undistributed Income of Subsidiaries 40,838 42,695 23,329 Undistributed Income of Subsidiaries 25,053 9,643 8,804 Income Before Tax 65,891 52,338 32,133 Income Tax Benefit 647 779 984 Net Income Available to Common Shareholders $ 66,538 $ 53,117 $ 33,117
Condensed Statements of Comprehensive Income	Condensed Statements of Comprehensive Income Years Ended December 31 2019 2018 2017 Net Income $ 66,538 $ 53,117 $ 33,117 Other Comprehensive Income (Loss) Change in fair value of derivative instruments, net of taxes (2,117 ) (25 ) 913 Unrealized appreciation for the period on held to maturity securities, net of taxes (92 ) (150 ) (166 ) Unrealized appreciation (depreciation) on available for sale securities, net of taxes 16,727 (4,003 ) 1,371 Less: reclassification adjustment for realized (gains) losses included in net income, net of 59 351 (25 ) 14,576 (3,827 ) 2,093 Comprehensive Income $ 81,114 $ 49,290 $ 35,210
Condensed Statements of Cash Flows	Condensed Statements of Cash Flows Years Ended December 31 2019 2018 2017 Operating Activities Net income $ 66,538 $ 53,117 $ 33,117 Items not requiring (providing) cash Equity in undistributed net income of subsidiaries (25,053 ) (9,643 ) (8,804 ) Change in: Share based compensation 215 251 325 Amortization of unearned compensation 705 169 135 Other assets (5,449 ) 132 388 Other liabilities 1,629 378 (1,675 ) Net cash provided by operating activities 38,585 44,404 23,486 Investing Activities Repurchase of outstanding stock (1,595 ) — — Acquisition of Lafayette — — (1,254 ) Acquisition of Wolverine — — (7,688 ) Acquisition of Salin 2,350 — — Net cash used in investing activities 755 — (8,942 ) Financing Activities Net change in borrowings 98 (12,316 ) (6,803 ) Dividends paid on common shares (20,835 ) (15,418 ) (11,720 ) Proceeds from issuance of stock 1,705 622 1,604 Net cash used in financing activities (19,032 ) (27,112 ) (16,919 ) Net Change in Cash and Cash Equivalents 20,308 17,292 (2,375 ) Cash and Cash Equivalents at Beginning of Year 30,653 13,361 15,736 Cash and Cash Equivalents at End of Year $ 50,961 $ 30,653 $ 13,361

Quarterly Results of Operatio_2

Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Consolidated Results of Operations	The following is a summary of the quarterly consolidated results of operations: Three Months Ended March 31 June 30 September 30 December 31 2019 2019 2019 2019 Interest income $ 45,373 $ 53,850 $ 55,711 $ 53,398 Interest expense 11,093 12,321 12,248 11,879 Net interest income 34,280 41,529 43,463 41,519 Provision for loan losses 364 896 376 340 Gain (loss) on sale of securities 15 (100 ) — 10 Net income $ 10,816 $ 16,642 $ 20,537 $ 18,543 Earnings per share: Basic $ 0.28 $ 0.37 $ 0.46 $ 0.41 Diluted 0.28 0.37 0.46 0.41 Average shares outstanding: Basic 38,822,543 45,055,117 45,038,021 44,971,676 Diluted 38,906,172 45,130,408 45,113,730 45,103,065 Three Months Ended March 31 June 30 September 30 December 31 2018 2018 2018 2018 Interest income $ 39,426 $ 40,741 $ 42,271 $ 43,730 Interest expense 6,015 7,191 8,499 9,894 Net interest income 33,411 33,550 33,772 33,836 Provision for loan losses 567 635 1,176 528 Gain (loss) on sale of securities 11 — (122 ) (332 ) Net income $ 12,804 $ 14,115 $ 13,065 $ 13,133 Earnings per share: Basic $ 0.33 $ 0.37 $ 0.34 $ 0.35 Diluted 0.33 0.37 0.34 0.34 Average shares outstanding: Basic 38,306,395 38,347,612 38,365,379 38,367,972 Diluted 38,468,810 38,519,401 38,534,970 38,488,861

Nature of Operations and Summ_4

Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019USD ($)Facilities$ / sharesshares	Dec. 31, 2018USD ($)shares	Dec. 31, 2017USD ($)shares	Jul. 16, 2019shares	Mar. 26, 2019USD ($)	Jan. 01, 2019USD ($)
Schedule Of Accounting Policies [Line Items]
Full service facilities maintained by bank | Facilities	74
Accrual of interest discontinued description	principal or interest is past due 90 days or more, and the loan is not well secured or in the process of collection, or when serious doubt exists as to the collectability of a loan, the accrual of interest is discontinued.
Commercial loans as a percentage of total loan	56.00%
Residential real estate loans as a percentage of total loan	21.00%
Installment loans as a percentage of total loan	19.00%
Mortgage warehouse loans as a percentage of total loan	4.00%
Period in which loan sold by mortgage company	30 days
Minimum period loan held by mortgage company	90 days
Mortgage warehousing maximum pay off period	30 days
Costs are deferred due to the term	$ 0
Impaired loans charged off	90 days
Status of Non-Accrual of Loan	90 days
Impairment of Loan	30 days
Intangibles, Gross	$ 26,700,000
Goodwill	$ 151,238,000	$ 119,880,000	$ 119,880,000		$ 31,200,000
Uncertain tax positions recognized	50.00%
Shares, non-dilutive | shares	120,341	102,138	0
Amount available for payment of dividend	$ 43,700,000
Compensation expense	920,000	$ 626,000	$ 460,000
Reclassifications effect on net income	$ 0
Number of shares authorized to be repurchased | shares				2,250,000
Number of shares repurchased | shares	99,407
Average price per share repurchased | $ / shares	$ 16.04
Operating Lease, Right-of-Use Asset	$ 3,500,000					$ 3,400,000
Measurement Input, Discount Rate [Member]
Schedule Of Accounting Policies [Line Items]
Factor considered to be significant for fair value measurement	10
Buildings and Improvements [Member] | Minimum [Member]
Schedule Of Accounting Policies [Line Items]
Useful Life for depreciation	3 years
Buildings and Improvements [Member] | Maximum [Member]
Schedule Of Accounting Policies [Line Items]
Useful Life for depreciation	40 years
Furniture and Equipment [Member] | Minimum [Member]
Schedule Of Accounting Policies [Line Items]
Useful Life for depreciation	2 years
Furniture and Equipment [Member] | Maximum [Member]
Schedule Of Accounting Policies [Line Items]
Useful Life for depreciation	20 days
Accounting Standards Update 2018-02 [Member]
Schedule Of Accounting Policies [Line Items]
Stranded tax effects included in AOCI			$ 766,000

Nature of Operations and Summ_5

Nature of Operations and Summary of Significant Accounting Policies - Summary of Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic earnings per share
Net income	$ 18,543	$ 20,537	$ 16,642	$ 10,816	$ 13,133	$ 13,065	$ 14,115	$ 12,804	$ 66,538	$ 53,117	$ 33,117
Weighted average common shares outstanding	44,971,676	45,038,021	45,055,117	38,822,543	38,367,972	38,365,379	38,347,612	38,306,395	43,493,316	38,347,059	34,553,736
Basic Earnings Per Share	$ 0.41	$ 0.46	$ 0.37	$ 0.28	$ 0.35	$ 0.34	$ 0.37	$ 0.33	$ 1.53	$ 1.39	$ 0.96
Diluted earnings per share
Net income available to common shareholders									$ 66,538	$ 53,117	$ 33,117
Weighted average common shares outstanding	44,971,676	45,038,021	45,055,117	38,822,543	38,367,972	38,365,379	38,347,612	38,306,395	43,493,316	38,347,059	34,553,736
Effect of dilutive securities:
Weighted average common shares outstanding	45,103,065	45,113,730	45,130,408	38,906,172	38,488,861	38,534,970	38,519,401	38,468,810	43,597,595	38,495,231	34,760,438
Diluted Earnings Per Share	$ 0.41	$ 0.46	$ 0.37	$ 0.28	$ 0.34	$ 0.34	$ 0.37	$ 0.33	$ 1.53	$ 1.38	$ 0.95
Restricted Stock [Member]
Effect of dilutive securities:
Effect of dilutive securities									23,006	36,185	46,981
Stock Options [Member]
Effect of dilutive securities:
Effect of dilutive securities									81,273	111,987	159,721

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($)	Mar. 26, 2019	Oct. 17, 2017	Sep. 01, 2017	Feb. 03, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Aug. 31, 2017
Business Acquisition [Line Items]
Common stock, shares outstanding					44,975,771	38,375,407
Acquisition of goodwill	$ 31,200,000				$ 151,238,000	$ 119,880,000	$ 119,880,000
Gain on remeasurement of equity interest					$ 530,000
Wolverine Bancorp Inc [Member]
Business Acquisition [Line Items]
Common stock, shares outstanding			2,129,331
Common stock issued		3,241,045
Market closing price per share		$ 19.37
Estimated transaction value		$ 93,800,000
Costs related to the acquisition		1,900,000
Total purchase price		93,773,000
Net intangible assets acquired		2,024,000
Acquisition of goodwill		$ 26,827,000
Core deposit intangible amortization period					10 years
Number of shares owned		1.5228
Share of common stock outstanding per share			$ 14
Payments received as cash consideration							(12,723,000)
Lafayette Community Bancorp [Member]
Business Acquisition [Line Items]
Exchange ratio per share			0.8817%
Cash paid for each share			$ 1.73
Common stock, shares outstanding			1,856,679
Common stock issued			1,636,888
Market closing price per share								$ 17.45
Estimated transaction value								$ 34.5
Costs related to the acquisition			$ 1.7
Total purchase price			34,465,000
Net intangible assets acquired			2,085,000
Acquisition of goodwill			$ 15,408,000
Core deposit intangible amortization period						10 years
Ownership interest percentage			5.00%
Gain on remeasurement of equity interest							530,000
Payments received as cash consideration							$ (20,425,000)
Lafayette Community Bancorp [Member] | Maximum [Member]
Business Acquisition [Line Items]
Number of shares owned			100
Share of common stock outstanding per share			$ 17.25
First Farmers Bank & Trust Co [Member]
Business Acquisition [Line Items]
Net intangible assets acquired				$ 452,000,000
Core deposit intangible amortization period				10 years
Payments received as cash consideration				$ 11,000,000
Business acquisition, loans assumed				$ 3,400,000
Premium on deposits paid				3.00%
Business acquisition, customer deposit balances				$ 14,800,000
Salin Bancshares, Inc
Business Acquisition [Line Items]
Exchange ratio per share	23907.50%
Cash paid for each share	$ 87,417.17
Common stock, shares outstanding	275
Common stock issued	6,563,697
Market closing price per share	$ 15.65
Estimated transaction value	$ 126,700,000
Costs related to the acquisition	5,600,000
Total purchase price	126,722,000
Net intangible assets acquired	19,818,000
Acquisition of goodwill	$ 31,358,000
Payments received as cash consideration					$ (128,745,000)

Acquisitions - Schedule of Fina

Acquisitions - Schedule of Final Purchase Price of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 26, 2019	Dec. 31, 2018	Dec. 31, 2017	Oct. 17, 2017	Sep. 01, 2017
Loans
Goodwill	$ 151,238	$ 31,200	$ 119,880	$ 119,880
Salin Bancshares, Inc
Assets
Cash and due from banks		152,745
Investment securities, available for sale		54,319
Loans
Total loans		568,918
Premises and equipment, net		20,425
FRB and FHLB stock		3,571
Goodwill		31,358
Core deposit intangible		19,818
Interest receivable		2,488
Other assets		112,880
Total assets purchased		966,522
Common shares issued		102,722
Cash paid		24,000
Total purchase price		126,722
Deposits
Non-interest bearing		188,744
NOW accounts		207,567
Savings and money market		274,504
Certificates of deposit		70,529
Total deposits		741,344
Borrowings		70,495
Subordinated debentures		18,376
Interest payable		826
Other liabilities		8,759
Total liabilities assumed		839,800
Salin Bancshares, Inc | Residential Mortgage [Member]
Loans
Total loans		131,008
Salin Bancshares, Inc | Commercial [Member]
Loans
Total loans		352,798
Salin Bancshares, Inc | Consumer [Member]
Loans
Total loans		$ 85,112
Wolverine Bancorp Inc [Member]
Assets
Cash and due from banks					$ 44,450
Loans
Total loans					310,667
Premises and equipment, net					2,941
FRB and FHLB stock					2,700
Goodwill					26,827
Core deposit intangible					2,024
Interest receivable					584
Other assets					3,897
Total assets purchased					394,090
Common shares issued					62,111
Cash paid					31,662
Total purchase price					93,773
Deposits
Non-interest bearing					25,221
NOW accounts					8,026
Savings and money market					129,044
Certificates of deposit					94,688
Total deposits					256,979
Borrowings					36,970
Interest payable					214
Other liabilities					6,154
Total liabilities assumed					300,317
Wolverine Bancorp Inc [Member] | Residential Mortgage [Member]
Loans
Total loans					30,603
Wolverine Bancorp Inc [Member] | Commercial [Member]
Loans
Total loans					276,167
Wolverine Bancorp Inc [Member] | Consumer [Member]
Loans
Total loans					$ 3,897
Lafayette Community Bancorp [Member]
Assets
Cash and due from banks						$ 24,846
Investment securities, available for sale						6
Loans
Total loans						134,299
Premises and equipment, net						7,818
FHLB stock						395
Goodwill						15,408
Core deposit intangible						2,085
Interest receivable						338
Other assets						1,649
Total assets purchased						186,844
Common shares issued						30,044
Cash paid						4,421
Total purchase price						34,465
Deposits
Non-interest bearing						34,990
NOW accounts						30,174
Savings and money market						53,663
Certificates of deposit						32,520
Total deposits						151,347
Interest payable						42
Other liabilities						990
Total liabilities assumed						152,379
Lafayette Community Bancorp [Member] | Residential Mortgage [Member]
Loans
Total loans						12,761
Lafayette Community Bancorp [Member] | Commercial [Member]
Loans
Total loans						116,258
Lafayette Community Bancorp [Member] | Consumer [Member]
Loans
Total loans						$ 5,280

Acquisitions - Schedule of Fi_2

Acquisitions - Schedule of Final Purchase Price of Assets Acquired and Liabilities Assumed (Parenthetical) (Detail)	Jul. 18, 2016USD ($)
Lafayette Community Bancorp [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Common shares previously held	$ 955,000

Acquisitions - Schedule of Acqu

Acquisitions - Schedule of Acquired Loans Accounted for in Accordance with ASC 310-30 (Detail) - USD ($) $ in Thousands	Mar. 26, 2019	Oct. 17, 2017	Sep. 01, 2017
Salin Bancshares, Inc
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition	$ 22,672
Contractual cash flows not expected to be collected (nonaccretable differences)	6,694
Expected cash flows at acquisition	15,978
Interest component of expected cash flows (accretable discount)	735
Fair value of acquired loans accounted for under ASC 310-30	$ 15,243
Wolverine Bancorp Inc [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition		$ 21,912
Contractual cash flows not expected to be collected (nonaccretable differences)		1,832
Expected cash flows at acquisition		20,080
Interest component of expected cash flows (accretable discount)		2,267
Fair value of acquired loans accounted for under ASC 310-30		$ 17,813
Lafayette Community Bancorp [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition			$ 6,128
Contractual cash flows not expected to be collected (nonaccretable differences)			1,326
Expected cash flows at acquisition			4,802
Interest component of expected cash flows (accretable discount)			933
Fair value of acquired loans accounted for under ASC 310-30			$ 3,869

Acquisitions - Pro Forma Result

Acquisitions - Pro Forma Result of Comparable Prior Reporting Period (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Net Interest Income	$ 168,693	$ 157,194	$ 153,376
Provision for loan losses	2,276	3,706	3,438
Net Interest Income after Provision for Loan Losses	166,417	153,488	149,938
Non-interest Income	43,472	39,918	42,456
Non-interest Expense	134,446	124,944	138,752
Income before Income Taxes	75,443	68,462	53,642
Income Tax Expense	13,246	10,216	15,978
Net Income	$ 62,197	$ 58,246	$ 37,664
Basic Earnings Per Share	$ 1.43	$ 1.52	$ 1.09
Diluted Earnings Per Share	$ 1.43	$ 1.51	$ 1.08

Cash Equivalents - Additional I

Cash Equivalents - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Cash and Cash Equivalents [Abstract]
Cash equivalent maximum maturity period	3 months
Increase in Cash account over the insured limit	$ 22.2
Uninsured Amount	$ 6.7

Securities - Fair Value of Secu

Securities - Fair Value of Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Total available for sale investment securities, Amortized Cost	$ 822,089	$ 608,909
Gross Unrealized Gains	15,961	2,308
Gross Unrealized Losses	(3,274)	(10,869)
Available-for-sale Securities, Fair Value	834,776	600,348
Held-to-maturity, Amortized Cost	207,899	210,112
Held-to-maturity, Gross Unrealized Gains	7,336	1,853
Held-to-maturity, Gross Unrealized Losses	(88)	(3,692)
Held-to-maturity, Fair Value	215,147	208,273
State and Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Total available for sale investment securities, Amortized Cost	396,931	210,386
Gross Unrealized Gains	11,288	1,495
Gross Unrealized Losses	(2,451)	(2,578)
Available-for-sale Securities, Fair Value	405,768	209,303
Held-to-maturity, Amortized Cost	190,767	191,269
Held-to-maturity, Gross Unrealized Gains	7,129	1,773
Held-to-maturity, Gross Unrealized Losses	(54)	(3,366)
Held-to-maturity, Fair Value	197,842	189,676
Federal Agency Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Total available for sale investment securities, Amortized Cost	267,272	187,563
Gross Unrealized Gains	2,543	625
Gross Unrealized Losses	(563)	(3,185)
Available-for-sale Securities, Fair Value	269,252	185,003
Held-to-maturity, Amortized Cost	4,560	5,144
Held-to-maturity, Gross Unrealized Gains	13	6
Held-to-maturity, Gross Unrealized Losses	(5)	(120)
Held-to-maturity, Fair Value	4,568	5,030
Federal Agency Mortgage-backed Pools [Member]
Schedule of Available-for-sale Securities [Line Items]
Total available for sale investment securities, Amortized Cost	145,623	183,479
Gross Unrealized Gains	1,207	80
Gross Unrealized Losses	(258)	(4,823)
Available-for-sale Securities, Fair Value	146,572	178,736
Held-to-maturity, Amortized Cost	12,572	13,699
Held-to-maturity, Gross Unrealized Gains	194	74
Held-to-maturity, Gross Unrealized Losses	(29)	(206)
Held-to-maturity, Fair Value	12,737	13,567
U.S. Treasury and Federal Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Total available for sale investment securities, Amortized Cost	1,415	16,815
Gross Unrealized Gains		1
Gross Unrealized Losses	(2)	(208)
Available-for-sale Securities, Fair Value	1,413	16,608
Corporate Notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Total available for sale investment securities, Amortized Cost	10,848	10,666
Gross Unrealized Gains	923	107
Gross Unrealized Losses		(75)
Available-for-sale Securities, Fair Value	$ 11,771	$ 10,698

Securities - Additional Informa

Securities - Additional Information (Detail)	Apr. 01, 2014USD ($)Security	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Investments, Debt and Equity Securities [Abstract]
Unrealized loss, other than temporary securities		$ 0
Number of securities | Security	319
Aggregate fair value of securities	$ 167,100,000
Gain/Loss from net unrealized holdings, Net of tax	$ 1,300,000	16,693,000	$ (3,802,000)	$ 1,180,000
Unrealized gain or loss, Held to maturity		0
Tax effect of the proceeds from sale of securities		(16,000)	$ (93,000)	$ 13,000
Pledged of Fair Value of Securities as collateral		106,800,000
Amortization cost of securities as Collateral not Separately Reported		106,400,000
Debt Instrument Repurchase Agreement		90,900,000
Securities Pledged for Federal Home Loan Bank At Fair Value		98,700,000
Securities for Federal Home Loan Bank Not Separately Reported		94,700,000
Securities Pledged For Derivative At Fair Value		33,400,000
Securities Pledged For Derivative At Amortized Cost		33,100,000
Debt Instrument Derivative Swap Agreement		14,800,000
Debt Instrument Federal Home Loan Bank		$ 0

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Amortized cost within one year	$ 37,386	$ 20,532
Amortized cost one to five years	41,230	42,476
Amortized cost for five to ten years	117,004	107,839
Amortized cost for after ten years	213,574	67,020
Total amortized cost	409,194	237,867
Total available for sale investment securities, Amortized Cost	822,089	608,909
Within one year, amortized cost	7,811	70
One to five years, amortized cost	56,037	48,732
Five to ten years, amortized cost	94,756	101,809
After ten years, amortized cost	32,163	40,658
Total amortized cost	190,767	191,269
Total held to maturity investment securities, amortized cost	207,899	210,112
Fair value within one year	37,321	20,448
Fair value for one to five years	41,293	41,705
Fair value for five to ten years	122,145	107,107
Fair value for after ten years	218,193	67,349
Total fair value	418,952	236,609
Investment securities, available for sale	834,776	600,348
Within one year, fair value	7,874	70
One to five years, fair value	57,048	49,324
five to ten years, fair value	98,480	101,533
After ten years, fair value	34,440	38,749
Total fair value	197,842	189,676
Held-to-maturity, Fair Value	215,147	208,273
Federal Agency Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Total available for sale investment securities, Amortized Cost	267,272	187,563
Total held to maturity investment securities, amortized cost	4,560	5,144
Investment securities, available for sale	269,252	185,003
Held-to-maturity, Fair Value	4,568	5,030
Federal Agency Mortgage-backed Pools [Member]
Schedule of Available-for-sale Securities [Line Items]
Total available for sale investment securities, Amortized Cost	145,623	183,479
Total held to maturity investment securities, amortized cost	12,572	13,699
Investment securities, available for sale	146,572	178,736
Held-to-maturity, Fair Value	$ 12,737	$ 13,567

Securities - Gross Unrealized L

Securities - Gross Unrealized Losses and Fair Value of Company's Investments (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Fair Value less than 12 months	$ 224,138	$ 92,615
Fair value more than 12 months	67,402	398,164
Total fair value	291,540	490,779
Unrealized losses less than 12 months	(2,788)	(1,767)
Unrealized losses more than 12 months	(574)	(12,794)
Total unrealized losses	(3,362)	(14,561)
U.S. Treasury and Federal Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value less than 12 months	1,413
Fair value more than 12 months		9,707
Total fair value	1,413	9,707
Unrealized losses less than 12 months	(2)
Unrealized losses more than 12 months		(208)
Total unrealized losses	(2)	(208)
State and Municipal [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value less than 12 months	129,942	75,163
Fair value more than 12 months	6,279	106,335
Total fair value	136,221	181,498
Unrealized losses less than 12 months	(2,374)	(1,628)
Unrealized losses more than 12 months	(131)	(4,316)
Total unrealized losses	(2,505)	(5,944)
Federal Agency Collateralized Mortgage Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value less than 12 months	68,043	6,450
Fair value more than 12 months	23,301	106,257
Total fair value	91,344	112,707
Unrealized losses less than 12 months	(308)	(25)
Unrealized losses more than 12 months	(260)	(3,280)
Total unrealized losses	(568)	(3,305)
Federal Agency Mortgage-backed Pools [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value less than 12 months	24,740	5,739
Fair value more than 12 months	37,822	175,865
Total fair value	62,562	181,604
Unrealized losses less than 12 months	(104)	(39)
Unrealized losses more than 12 months	(183)	(4,990)
Total unrealized losses	$ (287)	(5,029)
Corporate Notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value less than 12 months		5,263
Total fair value		5,263
Unrealized losses less than 12 months		(75)
Total unrealized losses		$ (75)

Securities - Sales of Securitie

Securities - Sales of Securities Available for Sale (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds	$ 98,425	$ 38,519	$ 5,490
Gross gains	168	37	151
Gross losses	$ (243)	$ (480)	$ (113)

Loans - Amounts of Loans (Detai

Loans - Amounts of Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage warehouse	$ 3,634,596	$ 3,011,570
Total loans	3,636,841	3,013,332
Allowance for loan losses	(17,667)	(17,820)	$ (16,394)	$ (14,837)
Loans, net	3,619,174	2,995,512
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	2,046,651	1,721,590
Mortgage warehouse	2,047,646	1,722,552
Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Real Estate, Total	770,717	668,141
Mortgage warehouse	920,998	742,244
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	669,180	549,481
Mortgage warehouse	665,952	546,774
Working Capital and Equipment [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	938,317	804,083
Real Estate Including Agriculture [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	978,891	834,037
Tax Exempt Loans Receivable [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	63,571	48,975
Other Commercial Loans [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	65,872	34,495
1-4 Family [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Real Estate, Total	762,571	659,754
Other Real Estate Loans [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Real Estate, Total	8,146	8,387
Auto [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	362,729	327,413
Recreation Consumer Loans Receivable [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	16,262	13,975
Real Estate Home Improvement Loans Receivable [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	43,585	39,587
Home Equity Loan [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	237,979	163,209
Mortgage warehouse	276,215	197,494
Unsecured Debt [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	7,286	4,043
Other Consumer Loans [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial/Consumer, Total	1,339	1,254
Mortgage Warehouse Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage warehouse	$ 150,293	$ 74,120

Loans - Additional Information

Loans - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Period of loan sold	30 days
Minimum period seldom held	90 days
Mortgage warehousing maximum pay off period	30 days

Loans - Recorded Investment of

Loans - Recorded Investment of Individual Loan Categories (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	$ 3,634,596	$ 3,011,570
Net loans	3,616,929	2,993,750
Interest Due	12,142	9,445
Deferred Fees / (Costs)	2,245	1,762
Recorded Investment	3,648,983	3,022,777
Recorded Investment	3,631,316	3,004,957
Allowance for loan losses	(17,667)	(17,820)	$ (16,394)	$ (14,837)
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	2,047,646	1,722,552
Interest Due	7,252	5,596
Deferred Fees / (Costs)	(995)	(962)
Recorded Investment	2,053,903	1,727,186
Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	920,998	742,244
Interest Due	2,527	2,035
Deferred Fees / (Costs)	12	17
Recorded Investment	923,537	744,296
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	665,952	546,774
Interest Due	2,363	1,814
Deferred Fees / (Costs)	3,228	2,707
Recorded Investment	671,543	551,295
Owner Occupied Real Estate [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	519,577	444,834
Interest Due	784	931
Deferred Fees / (Costs)	(148)	(130)
Recorded Investment	520,213	445,635
Non Owner Occupied Real Estate [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	973,331	852,855
Interest Due	1,752	1,436
Deferred Fees / (Costs)	(763)	(747)
Recorded Investment	974,320	853,544
Residential Spec Homes [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	12,925	5,195
Interest Due	15	13
Deferred Fees / (Costs)	(2)
Recorded Investment	12,938	5,208
Development & Spec Land [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	35,954	50,706
Interest Due	101	153
Deferred Fees / (Costs)	(14)	(15)
Recorded Investment	36,041	50,844
Commercial and Industrial [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	505,859	368,962
Interest Due	4,600	3,063
Deferred Fees / (Costs)	(68)	(70)
Recorded Investment	510,391	371,955
Residential Mortgage [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	751,019	644,094
Interest Due	2,245	1,861
Deferred Fees / (Costs)	12	17
Recorded Investment	753,276	645,972
Residential Construction [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	19,686	24,030
Interest Due	40	42
Recorded Investment	19,726	24,072
Mortgage Warehousing [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	150,293	74,120
Interest Due	242	132
Recorded Investment	150,535	74,252
Direct Installment [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	41,079	35,103
Interest Due	148	108
Deferred Fees / (Costs)	678	593
Recorded Investment	41,905	35,804
Indirect Installment [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	348,658	314,177
Interest Due	911	738
Recorded Investment	349,569	314,915
Home Equity Loan [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Balance	276,215	197,494
Interest Due	1,304	968
Deferred Fees / (Costs)	2,550	2,114
Recorded Investment	$ 280,069	$ 200,576

Accounting for Certain Loans _3

Accounting for Certain Loans Acquired in a Transfer - Amounts of Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	$ 3,636,841	$ 3,013,332
Allowance for loan losses	17,667	17,820	$ 16,394	$ 14,837
Carrying Amount	3,616,929	2,993,750
Loans Purchased With Evidence of Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	14,630	15,162
Allowance for loan losses	133	60
Carrying Amount	14,497	15,102
Loans Purchased With Evidence of Credit Deterioration [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	10,205	13,245
Loans Purchased With Evidence of Credit Deterioration [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	3,443	1,890
Loans Purchased With Evidence of Credit Deterioration [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	982	27
Loans Purchased With Evidence of Credit Deterioration [Member] | Heartland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	296	407
Carrying Amount	296	407
Loans Purchased With Evidence of Credit Deterioration [Member] | Heartland [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	197	232
Loans Purchased With Evidence of Credit Deterioration [Member] | Heartland [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	99	175
Loans Purchased With Evidence of Credit Deterioration [Member] | Summit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	561	878
Carrying Amount	561	878
Loans Purchased With Evidence of Credit Deterioration [Member] | Summit [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	88	323
Loans Purchased With Evidence of Credit Deterioration [Member] | Summit [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	473	555
Loans Purchased With Evidence of Credit Deterioration [Member] | Peoples Bancorp Inc [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	264	328
Carrying Amount	264	328
Loans Purchased With Evidence of Credit Deterioration [Member] | Peoples Bancorp Inc [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	229	270
Loans Purchased With Evidence of Credit Deterioration [Member] | Peoples Bancorp Inc [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	35	58
Loans Purchased With Evidence of Credit Deterioration [Member] | Kosciusko Financial Inc [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	375	901
Carrying Amount	375	901
Loans Purchased With Evidence of Credit Deterioration [Member] | Kosciusko Financial Inc [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	244	746
Loans Purchased With Evidence of Credit Deterioration [Member] | Kosciusko Financial Inc [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	131	155
Loans Purchased With Evidence of Credit Deterioration [Member] | LaPorte Bancorp Inc [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	1,166	1,727
Allowance for loan losses		60
Carrying Amount	1,166	1,667
Loans Purchased With Evidence of Credit Deterioration [Member] | LaPorte Bancorp Inc [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	353	753
Loans Purchased With Evidence of Credit Deterioration [Member] | LaPorte Bancorp Inc [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	793	947
Loans Purchased With Evidence of Credit Deterioration [Member] | LaPorte Bancorp Inc [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	20	27
Loans Purchased With Evidence of Credit Deterioration [Member] | Lafayette Community Bancorp [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	1,867	3,080
Carrying Amount	1,867	3,080
Loans Purchased With Evidence of Credit Deterioration [Member] | Lafayette Community Bancorp [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	1,867	3,080
Loans Purchased With Evidence of Credit Deterioration [Member] | Wolverine Bancorp Inc [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	2,289	7,841
Carrying Amount	2,289	7,841
Loans Purchased With Evidence of Credit Deterioration [Member] | Wolverine Bancorp Inc [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	2,289	$ 7,841
Loans Purchased With Evidence of Credit Deterioration [Member] | Salin Bank and Trust Company [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	7,812
Allowance for loan losses	133
Carrying Amount	7,679
Loans Purchased With Evidence of Credit Deterioration [Member] | Salin Bank and Trust Company [Member] | Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	4,938
Loans Purchased With Evidence of Credit Deterioration [Member] | Salin Bank and Trust Company [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	1,912
Loans Purchased With Evidence of Credit Deterioration [Member] | Salin Bank and Trust Company [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Outstanding balance	$ 962

Accounting for Certain Loans _4

Accounting for Certain Loans Acquired in a Transfer - Accretable Yield or Income Expected to be Collected (Detail) - Loans Purchased With Evidence of Credit Deterioration [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 2,652	$ 5,165
Additions	2,002
Accretion	(1,203)	(1,448)
Disposals	(545)	(1,065)
Ending balance	2,906	2,652
Heartland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	174	452
Accretion	(32)	(85)
Disposals		(193)
Ending balance	142	174
Summit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	42	147
Accretion	(9)	(54)
Disposals	(11)	(51)
Ending balance	22	42
Kosciusko Financial Inc [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	300	386
Accretion	(63)	(78)
Disposals	(2)	(8)
Ending balance	235	300
LaPorte Bancorp Inc [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	829	980
Accretion	(111)	(144)
Disposals	4	(7)
Ending balance	722	829
Lafayette Community Bancorp [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	609	933
Accretion	(126)	(275)
Disposals	(193)	(49)
Ending balance	290	609
Wolverine Bancorp Inc [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	698	2,267
Accretion	(272)	(812)
Disposals	(306)	(757)
Ending balance	120	$ 698
Salin Bank And Trust Company [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Additions	2,002
Accretion	(590)
Disposals	(37)
Ending balance	$ 1,375

Accounting for Certain Loans _5

Accounting for Certain Loans Acquired in a Transfer - Additional Information (Detail) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Total provision charged to operating expense	$ 340,000	$ 376,000	$ 896,000	$ 364,000	$ 528,000	$ 1,176,000	$ 635,000	$ 567,000	$ 1,976,000	$ 2,906,000	$ 2,470,000
Loans Purchased With Evidence of Credit Deterioration [Member]
Business Acquisition [Line Items]
Total provision charged to operating expense									133,000	60,000
Allowances for loan losses									$ 0	$ 0

Allowance for Loan Losses - Add

Allowance for Loan Losses - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019
Minimum [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Actual loss history experienced by the Company	1 year
Maximum [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Actual loss history experienced by the Company	5 years
Allowance for loan losses charge down family first and junior lien mortgages past due period	180 days
Allowance for loan losses charge down unsecured open end loans past due period	90 days
Allowance for loan losses charge down other secured loans past due period	90 days

Allowance for Loan Losses - All

Allowance for Loan Losses - Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at beginning of the period				$ 17,820				$ 16,394	$ 17,820	$ 16,394	$ 14,837
Total loans charged-off									3,268	2,552	2,253
Total loan recoveries									1,139	1,072	1,340
Net loans charged-off									2,129	1,480	913
Total provision charged to operating expense	$ 340	$ 376	$ 896	$ 364	$ 528	$ 1,176	$ 635	$ 567	1,976	2,906	2,470
Balance at the end of the period	$ 17,667				$ 17,820				17,667	17,820	16,394
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									863	473	629
Total loan recoveries									199	176	298
Total provision charged to operating expense									2,165	1,699	2,164
Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									41	109	12
Total loan recoveries										55	8
Commercial [Member] | Non Owner Occupied Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									64		75
Total loan recoveries									15	33	32
Commercial [Member] | Residential Spec Homes [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									3
Total loan recoveries									5	8	8
Commercial [Member] | Development & Spec Land [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off											1
Commercial [Member] | Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									755	364	541
Total loan recoveries									179	80	250
Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									93	76	89
Total loan recoveries									46	27	44
Total provision charged to operating expense									(635)	(487)	(81)
Real Estate [Member] | Residential Mortgage [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									93	76	89
Total loan recoveries									46	27	44
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									2,312	2,003	1,535
Total loan recoveries									894	869	998
Total provision charged to operating expense									446	1,694	387
Consumer [Member] | Direct Installment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									208	154	137
Total loan recoveries									97	53	501
Consumer [Member] | Indirect Installment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									1,785	1,673	1,193
Total loan recoveries									661	505	497
Consumer [Member] | Home Equity Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans charged-off									319	176	$ 205
Total loan recoveries									$ 136	$ 311

Allowance for Loan Losses - A_2

Allowance for Loan Losses - Allowance for Loan Losses and Recorded Investment in Loans by Portfolio Segment (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Total ending allowance balance	$ 17,667	$ 17,820	$ 16,394	$ 14,837
Total ending loans balance	7,351	6,697	$ 7,172
Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Individually evaluated for impairment	541	1,035
Allowance For Loan Losses, Collectively evaluated for impairment	17,126	16,785
Total ending allowance balance	17,667	17,820
Commercial [Member] | Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Individually evaluated for impairment	541	1,035
Allowance For Loan Losses, Collectively evaluated for impairment	11,455	9,460
Total ending allowance balance	11,996	10,495
Real Estate [Member] | Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Collectively evaluated for impairment	923	1,676
Total ending allowance balance	923	1,676
Consumer [Member] | Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Collectively evaluated for impairment	3,671	4,643
Total ending allowance balance	3,671	4,643
Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Individually evaluated for impairment	7,347	6,696
Loans: Collectively evaluated for impairment	3,627,249	3,004,874
Total ending loans balance	3,634,596	3,011,570
Loans [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Individually evaluated for impairment	7,347	6,696
Loans: Collectively evaluated for impairment	2,040,299	1,715,856
Total ending loans balance	2,047,646	1,722,552
Loans [Member] | Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Collectively evaluated for impairment	770,705	668,124
Total ending loans balance	770,705	668,124
Loans [Member] | Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Collectively evaluated for impairment	665,952	546,774
Total ending loans balance	665,952	546,774
Mortgage Warehousing [Member] | Allowance for Loan Losses [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance For Loan Losses, Collectively evaluated for impairment	1,077	1,006
Total ending allowance balance	1,077	1,006
Mortgage Warehousing [Member] | Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans: Collectively evaluated for impairment	150,293	74,120
Total ending loans balance	$ 150,293	$ 74,120

Non-performing Assets and Imp_3

Non-performing Assets and Impaired Loans - Non-accrual, Loans Past Due Over 90 Days Still on Accrual, and Troubled Debt Restructured ("TDRs") by Class of Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	$ 15,679	$ 11,548
Loans Past Due Over 90 Days Still Accruing	146	568
Non-Performing TDRs	2,006	1,057
Performing TDRs	3,354	2,002
Total Non-Performing Loans	21,185	15,175
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	4,782	6,094
Loans Past Due Over 90 Days Still Accruing		208
Non-Performing TDRs	1,081	492
Performing TDRs	1,484	109
Total Non-Performing Loans	7,347	6,903
Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	2,424	3,531
Loans Past Due Over 90 Days Still Accruing		208
Non-Performing TDRs	629
Performing TDRs	139	109
Total Non-Performing Loans	3,192	3,848
Commercial [Member] | Non Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	682	554
Non-Performing TDRs	374	492
Total Non-Performing Loans	1,056	1,046
Commercial [Member] | Development & Spec Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	73	68
Total Non-Performing Loans	73	68
Commercial [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	1,603	1,941
Non-Performing TDRs	78
Performing TDRs	1,345
Total Non-Performing Loans	3,026	1,941
Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	7,614	2,846
Loans Past Due Over 90 Days Still Accruing	1	180
Non-Performing TDRs	708	423
Performing TDRs	1,561	1,558
Total Non-Performing Loans	9,884	5,007
Real Estate [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	7,614	2,846
Loans Past Due Over 90 Days Still Accruing	1	180
Non-Performing TDRs	708	423
Performing TDRs	1,561	1,558
Total Non-Performing Loans	9,884	5,007
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	3,283	2,608
Loans Past Due Over 90 Days Still Accruing	145	180
Non-Performing TDRs	217	142
Performing TDRs	309	335
Total Non-Performing Loans	3,954	3,265
Consumer [Member] | Direct Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	30	35
Loans Past Due Over 90 Days Still Accruing	5
Total Non-Performing Loans	35	35
Consumer [Member] | Indirect Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	1,234	916
Loans Past Due Over 90 Days Still Accruing	135	173
Total Non-Performing Loans	1,369	1,089
Consumer [Member] | Home Equity Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	2,019	1,657
Loans Past Due Over 90 Days Still Accruing	5	7
Non-Performing TDRs	217	142
Performing TDRs	309	335
Total Non-Performing Loans	$ 2,550	$ 2,141

Non-performing Assets and Imp_4

Non-performing Assets and Impaired Loans - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019USD ($)ConsecutivePayment	Dec. 31, 2018USD ($)
Financing Receivable, Modifications [Line Items]
Non-accrual loans	$ 15,679,000	$ 11,548,000
Non-performing TDRs	$ 2,000,000
Loan delinquency period	90 days
Minimum period required for satisfactory performance to return loan from non-accrual to accrual status	6 months
Restructured loan reported in TDRs	$ 5,400,000
Restructured loan returned to accruing status number of Consecutive Payments of loan | ConsecutivePayment	6
Specific reserves allocated to troubled debt restructuring	$ 133,000
Performing Financing Receivable [Member]
Financing Receivable, Modifications [Line Items]
Restructured loan reported in TDRs	$ 3,400,000
Number TDRs returned to accrual status | ConsecutivePayment	0
Loans Purchased With Evidence of Credit Deterioration [Member]
Financing Receivable, Modifications [Line Items]
Non-accrual loans	$ 2,300,000
Non-performing TDRs	$ 182,000
Minimum [Member]
Financing Receivable, Modifications [Line Items]
Loan delinquency period	90 days
Delay or shortfall in payments of loan	30 days
Loans with an aggregate credit exposure	$ 1,500,000
Loans classified as TDR after a period	90 days
Minimum [Member] | Good Pass [Member]
Financing Receivable, Modifications [Line Items]
Number of consecutive years of profit Unaudited Financial Information for Good Pass Rating	5 years
Number of years of Satisfactory Relationship with bank for Good Pass Rating	5 years
Minimum [Member] | Satisfactory Pass [Member]
Financing Receivable, Modifications [Line Items]
Number of consecutive years of profit for Good Pass Rating	3 years
Maximum [Member]
Financing Receivable, Modifications [Line Items]
Loans with an aggregate credit exposure	$ 3,500,000
Loans classified as TDR after a period	120 days
Minimum number of years of Satisfactory Repayment required for Satisfactory Pass Rating	2 years

Non-performing Assets and Imp_5

Non-performing Assets and Impaired Loans - Commercial Loans Individually Evaluated for Impairment by Class of Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance total	$ 7,347	$ 6,696	$ 7,141
Total ending loans balance	7,351	6,697	7,172
Allowance For Loan Loss Allocated	541	1,035	184
Average Balance in Impaired Loans total	10,395	7,368	3,774
Cash/Accrual Interest Income Recognized, Total	490	128	86
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance With no recorded allowance	6,061	4,968	6,210
Recorded Investment With no recorded allowance	6,064	4,969	6,241
Average Balance in Impaired Loans With no recorded allowance	9,040	5,454	3,696
Cash/Accrual Interest Income Recognized, With no recorded allowance	444	110	40
Unpaid Principal Balance With an allowance recorded	1,286	1,728	931
Recorded Investment With an allowance recorded	1,287	1,728	931
Allowance For Loan Loss Allocated	541	1,035	184
Average Balance in Impaired Loans With an allowance recorded	1,355	1,914	78
Cash/Accrual Interest Income Recognized, With an allowance recorded	46	18	46
Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance With no recorded allowance	3,192	2,814	1,255
Recorded Investment With no recorded allowance	3,193	2,815	1,270
Average Balance in Impaired Loans With no recorded allowance	3,608	3,168	1,168
Cash/Accrual Interest Income Recognized, With no recorded allowance	246	77	4
Unpaid Principal Balance With an allowance recorded		827	704
Recorded Investment With an allowance recorded		827	704
Allowance For Loan Loss Allocated		145	78
Average Balance in Impaired Loans With an allowance recorded		864	59
Cash/Accrual Interest Income Recognized, With an allowance recorded			33
Commercial [Member] | Non Owner Occupied Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance With no recorded allowance	937	860	3,123
Recorded Investment With no recorded allowance	937	860	3,139
Average Balance in Impaired Loans With no recorded allowance	2,810	1,096	850
Cash/Accrual Interest Income Recognized, With no recorded allowance	98	12	7
Unpaid Principal Balance With an allowance recorded	119	186	227
Recorded Investment With an allowance recorded	119	186	227
Allowance For Loan Loss Allocated	25	30	106
Average Balance in Impaired Loans With an allowance recorded	130	180	19
Cash/Accrual Interest Income Recognized, With an allowance recorded		4	13
Commercial [Member] | Development & Spec Land [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance With no recorded allowance	73	68	176
Recorded Investment With no recorded allowance	73	68	176
Average Balance in Impaired Loans With no recorded allowance	158	71	233
Cash/Accrual Interest Income Recognized, With no recorded allowance			4
Commercial [Member] | Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Principal Balance With no recorded allowance	1,859	1,226	1,656
Recorded Investment With no recorded allowance	1,861	1,226	1,656
Average Balance in Impaired Loans With no recorded allowance	2,464	1,119	1,445
Cash/Accrual Interest Income Recognized, With no recorded allowance	100	21	$ 25
Unpaid Principal Balance With an allowance recorded	1,167	715
Recorded Investment With an allowance recorded	1,168	715
Allowance For Loan Loss Allocated	516	860
Average Balance in Impaired Loans With an allowance recorded	1,225	870
Cash/Accrual Interest Income Recognized, With an allowance recorded	$ 46	$ 14

Non-performing Assets and Imp_6

Non-performing Assets and Impaired Loans - Payment Status by Class of Loan (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 3,609,036	$ 2,991,236
Total Past Due	17,685	12,605
Loans Not Past Due	25,560	20,334
Total	$ 3,634,596	$ 3,011,570
Total Past Due, Percentage of Total Loans	0.49%	0.42%
Loans Not Past Due, Percentage of Total Loans	0.70%	0.68%
Current,Percentage of total loans	99.30%	99.32%
Percentage of total loans	100.00%	100.00%
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 2,039,953	$ 1,712,287
Total Past Due	5,863	6,586
Loans Not Past Due	7,693	10,265
Total	2,047,646	1,722,552
Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	515,604	439,542
Total Past Due	3,053	3,531
Loans Not Past Due	3,973	5,292
Total	519,577	444,834
Commercial [Member] | Non Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	972,195	851,587
Total Past Due	1,056	1,046
Loans Not Past Due	1,136	1,268
Total	973,331	852,855
Commercial [Member] | Residential Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	12,925	4,703
Loans Not Past Due		492
Total	12,925	5,195
Commercial [Member] | Development & Spec Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	35,881	50,638
Total Past Due	73	68
Loans Not Past Due	73	68
Total	35,954	50,706
Commercial [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	503,348	365,817
Total Past Due	1,681	1,941
Loans Not Past Due	2,511	3,145
Total	505,859	368,962
Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	910,691	737,608
Total Past Due	8,322	3,269
Loans Not Past Due	10,307	4,636
Total	920,998	742,244
Real Estate [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	740,712	639,458
Total Past Due	8,322	3,269
Loans Not Past Due	10,307	4,636
Total	751,019	644,094
Real Estate [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	19,686	24,030
Total	19,686	24,030
Real Estate [Member] | Mortgage Warehousing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	150,293	74,120
Total	150,293	74,120
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	658,392	541,341
Total Past Due	3,500	2,750
Loans Not Past Due	7,560	5,433
Total	665,952	546,774
Consumer [Member] | Direct Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	40,864	34,957
Total Past Due	30	35
Loans Not Past Due	215	146
Total	41,079	35,103
Consumer [Member] | Indirect Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	344,478	311,494
Total Past Due	1,234	916
Loans Not Past Due	4,180	2,683
Total	348,658	314,177
Consumer [Member] | Home Equity Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	273,050	194,890
Total Past Due	2,236	1,799
Loans Not Past Due	3,165	2,604
Total	276,215	197,494
30 - 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 7,289	$ 5,100
Total Past Due, Percentage of Total Loans	0.20%	0.17%
30 - 59 Days Past Due [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1,819	$ 1,719
30 - 59 Days Past Due [Member] | Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	920	537
30 - 59 Days Past Due [Member] | Commercial [Member] | Non Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	80	203
30 - 59 Days Past Due [Member] | Commercial [Member] | Residential Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		492
30 - 59 Days Past Due [Member] | Commercial [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	819	487
30 - 59 Days Past Due [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,984	1,131
30 - 59 Days Past Due [Member] | Real Estate [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,984	1,131
30 - 59 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,486	2,250
30 - 59 Days Past Due [Member] | Consumer [Member] | Direct Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	175	93
30 - 59 Days Past Due [Member] | Consumer [Member] | Indirect Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,407	1,396
30 - 59 Days Past Due [Member] | Consumer [Member] | Home Equity Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	904	761
60 - 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 440	$ 2,061
Total Past Due, Percentage of Total Loans	0.01%	0.07%
60 - 89 Days Past Due [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 11	$ 1,752
60 - 89 Days Past Due [Member] | Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		1,016
60 - 89 Days Past Due [Member] | Commercial [Member] | Non Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		19
60 - 89 Days Past Due [Member] | Commercial [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	11	717
60 - 89 Days Past Due [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		56
60 - 89 Days Past Due [Member] | Real Estate [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		56
60 - 89 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	429	253
60 - 89 Days Past Due [Member] | Consumer [Member] | Direct Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5	18
60 - 89 Days Past Due [Member] | Consumer [Member] | Indirect Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	404	198
60 - 89 Days Past Due [Member] | Consumer [Member] | Home Equity Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	20	37
Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 146	$ 568
Total Past Due, Percentage of Total Loans	0.00%	0.02%
Greater than 90 Days Past Due [Member] | Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		$ 208
Greater than 90 Days Past Due [Member] | Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due		208
Greater than 90 Days Past Due [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 1	180
Greater than 90 Days Past Due [Member] | Real Estate [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1	180
Greater than 90 Days Past Due [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	145	180
Greater than 90 Days Past Due [Member] | Consumer [Member] | Direct Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5
Greater than 90 Days Past Due [Member] | Consumer [Member] | Indirect Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	135	173
Greater than 90 Days Past Due [Member] | Consumer [Member] | Home Equity Loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 5	$ 7

Non-performing Assets and Imp_7

Non-performing Assets and Impaired Loans - Loans by Credit Grades (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Total	$ 3,634,596	$ 3,011,570
Percentage of total loans	100.00%	100.00%
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 2,047,646	$ 1,722,552
Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	519,577	444,834
Commercial [Member] | Non Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	973,331	852,855
Commercial [Member] | Residential Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	12,925	5,195
Commercial [Member] | Development & Spec Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	35,954	50,706
Commercial [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	505,859	368,962
Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	920,998	742,244
Real Estate [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	751,019	644,094
Real Estate [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	19,686	24,030
Real Estate [Member] | Mortgage Warehousing [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	150,293	74,120
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	665,952	546,774
Consumer [Member] | Direct Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	41,079	35,103
Consumer [Member] | Indirect Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	348,658	314,177
Consumer [Member] | Home Equity Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	276,215	197,494
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 3,541,122	$ 2,949,743
Percentage of total loans	97.43%	97.95%
Pass [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 1,968,009	$ 1,668,817
Pass [Member] | Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	492,386	426,887
Pass [Member] | Commercial [Member] | Non Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	957,990	834,582
Pass [Member] | Commercial [Member] | Residential Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	12,925	5,195
Pass [Member] | Commercial [Member] | Development & Spec Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	35,815	47,523
Pass [Member] | Commercial [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	468,893	354,630
Pass [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	911,115	737,417
Pass [Member] | Real Estate [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	741,136	639,267
Pass [Member] | Real Estate [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	19,686	24,030
Pass [Member] | Real Estate [Member] | Mortgage Warehousing [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	150,293	74,120
Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	661,998	543,509
Pass [Member] | Consumer [Member] | Direct Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	41,044	35,068
Pass [Member] | Consumer [Member] | Indirect Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	347,289	313,088
Pass [Member] | Consumer [Member] | Home Equity Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	273,665	195,353
Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 34,804	$ 23,052
Percentage of total loans	0.96%	0.76%
Special Mention [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 34,804	$ 23,052
Special Mention [Member] | Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	8,328	3,664
Special Mention [Member] | Commercial [Member] | Non Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	7,824	9,682
Special Mention [Member] | Commercial [Member] | Development & Spec Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	3,115
Special Mention [Member] | Commercial [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	18,652	6,591
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 58,670	$ 38,775
Percentage of total loans	1.61%	1.29%
Substandard [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 44,833	$ 30,683
Substandard [Member] | Commercial [Member] | Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	18,863	14,283
Substandard [Member] | Commercial [Member] | Non Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	7,517	8,591
Substandard [Member] | Commercial [Member] | Development & Spec Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	139	68
Substandard [Member] | Commercial [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	18,314	7,741
Substandard [Member] | Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	9,883	4,827
Substandard [Member] | Real Estate [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	9,883	4,827
Substandard [Member] | Real Estate [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Total		0
Substandard [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	3,954	3,265
Substandard [Member] | Consumer [Member] | Direct Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	35	35
Substandard [Member] | Consumer [Member] | Indirect Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,369	1,089
Substandard [Member] | Consumer [Member] | Home Equity Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 2,550	$ 2,141
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Percentage of total loans	0.00%	0.00%

Premises and Equipment - Summar

Premises and Equipment - Summary of Premises and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total cost	$ 138,443	$ 115,790
Accumulated depreciation	(46,234)	(41,459)
Net premise and equipment	92,209	74,331
Land [Member]
Property, Plant and Equipment [Line Items]
Total cost	27,292	21,604
Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	83,669	69,590
Furniture and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 27,482	$ 24,596

Loan Servicing - Additional Inf

Loan Servicing - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2017
Receivables [Abstract]
Unpaid principal balances of loans serviced for others totaled	$ 1,400,000,000	$ 1,300,000,000
Aggregate fair value of capitalized mortgage servicing rights	14,400,000	13,900,000	$ 12,800,000	$ 11,700,000
Mortgage servicing rights, net	14,327,000	12,349,000	11,602,000
Bank recorded additional impairment	$ 192,000	$ (60,000)	$ 80,000

Loan Servicing - Originated Mor

Loan Servicing - Originated Mortgage Servicing Rights (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Payments for (Proceeds from) Mortgage Servicing Rights [Abstract]
Balances, January 1	$ 12,876	$ 12,189	$ 11,681
Servicing rights capitalized	3,547	1,883	2,109
Amortization of servicing rights	(1,377)	(1,196)	(1,601)
Balances, December 31	15,046	12,876	12,189
Balances, January 1	(527)	(587)	(507)
Additions	(234)	(78)	(85)
Reductions	42	138	5
Balances, December 31	(719)	(527)	(587)
Mortgage servicing rights, net	$ 14,327	$ 12,349	$ 11,602

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	Mar. 26, 2019	Oct. 17, 2017	Sep. 01, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Intangible Assets [Line Items]
Goodwill acquired				$ 31,358,000
Goodwill impairment loss				0	$ 0
Amortization expense for intangible assets totaled				$ 3,500,000	$ 2,000,000	$ 1,500,000
Wolverine Bancorp Inc [Member]
Intangible Assets [Line Items]
Goodwill acquired		$ 26,800,000
Core deposit intangible amortization period				10 years
Lafayette Community Bancorp [Member]
Intangible Assets [Line Items]
Goodwill acquired			$ 15,400,000
Core deposit intangible amortization period					10 years
Salin [Member]
Intangible Assets [Line Items]
Goodwill acquired	$ 31,200,000
Core Deposits [Member] | Minimum [Member]
Intangible Assets [Line Items]
Core deposit intangible amortization period				7 years
Core Deposits [Member] | Maximum [Member]
Intangible Assets [Line Items]
Core deposit intangible amortization period				10 years

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	Mar. 26, 2019	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Balance, January 1		$ 119,880
Goodwill acquired		31,358
Balance, December 31	$ 31,200	$ 151,238

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets Core deposit intangible, Gross Carrying Amount	$ 26,700
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets Core deposit intangible, Gross Carrying Amount	40,590	$ 20,711
Amortizable intangible assets Core deposit intangible, Accumulated Amortization	$ (13,911)	$ (10,321)

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Estimated Amortization (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2020	$ 3,723
2021	3,591
2022	3,516
2023	3,430
2024	3,225
Thereafter	9,194
Estimated amortization	$ 26,679	$ 10,390

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019
Operating Lease, Right-of-Use Asset	$ 3,500	$ 3,400
Operating Lease, Liability	3,014
Operating Lease, Expense	$ 591,000
Operating leases terms	6 years 4 months 24 days
Weighted average discount rate, percentage	2.57%
Bank Branch And Office Space [Member]
Operating leases terms	7 years
Other Assets [Member]
Operating Lease, Right-of-Use Asset	$ 2,700
Other Liabilities [Member]
Operating Lease, Liability	$ 2,700

Leases - Schedule Of Future Min

Leases - Schedule Of Future Minimum Rental Payments For Operating Leases (Detail) $ in Thousands	Dec. 31, 2019USD ($)
2020	$ 476
2021	476
2022	504
2023	504
2024 and thereafter	1,105
Total lease payments	3,065
Less: Interest	(51)
Present value of lease liabilities	$ 3,014

Deposits - Deposits (Detail)

Deposits - Deposits (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deposits [Line Items]
Noninterest-bearing demand deposits	$ 709,760	$ 642,129
Interest-bearing demand deposits	1,159,296	864,026
Money market (variable rate)	522,382	420,123
Savings deposits	563,952	400,187
Other certificates and time deposits	514,177	441,087
Total deposits	3,931,002	3,139,376
Certificates of Deposit of $250,000 or More [Member]
Deposits [Line Items]
Certificates of deposit	$ 461,435	$ 371,824

Deposits - Certificates and Oth

Deposits - Certificates and Other Time Deposits for Both Retail and Brokered (Detail) $ in Thousands	Dec. 31, 2019USD ($)
Time Deposits By Maturity [Line Items]
2020	$ 747,022
2021	122,957
2022	48,181
2023	33,175
2024	22,995
Thereafter	1,282
Certificates and other time deposits	975,612
Retail [Member]
Time Deposits By Maturity [Line Items]
2020	722,672
2021	102,449
2022	32,925
2023	16,527
2024	22,995
Thereafter	1,282
Certificates and other time deposits	898,850
Brokered [Member]
Time Deposits By Maturity [Line Items]
2020	24,350
2021	20,508
2022	15,256
2023	16,648
Certificates and other time deposits	$ 76,762

Borrowings - Borrowings (Detail

Borrowings - Borrowings (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Federal Home Loan Bank advances, variable and fixed rates ranging from 0.68% to 7.53%, due at various dates through August 20, 2029	$ 390,800	$ 356,579
Securities sold under agreements to repurchase	90,941	52,116
Federal funds purchased	68,000	141,689
Total borrowings	$ 549,741	$ 550,384

Borrowings - Borrowings (Parent

Borrowings - Borrowings (Parenthetical) (Detail)	Dec. 31, 2019
Maximum [Member]
Borrowings Under Repurchase Agreements [Line Items]
Federal Home Loan Bank advances, variable and fixed rates	7.53%
Minimum [Member]
Borrowings Under Repurchase Agreements [Line Items]
Federal Home Loan Bank advances, variable and fixed rates	0.68%

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
Debt Disclosure [Line Items]
Federal Home Loan Bank advances are secured by first and second mortgage loans and mortgage warehouse loans	$ 905.9
Available credit lines with various money center banks	$ 517.1
Maximum [Member]
Debt Disclosure [Line Items]
Federal Home Loan Bank Borrowings Call Date	Oct. 24, 2022
Minimum [Member]
Debt Disclosure [Line Items]
Federal Home Loan Bank Borrowings Call Date	Feb. 20, 2020
Federal Home Loan Bank, Advances, Putable Option [Member]
Debt Disclosure [Line Items]
Putable advances	$ 125

Borrowings - Contractual Maturi

Borrowings - Contractual Maturities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
2020	$ 276,970
2021	15,102
2022	52,222
2023	183
2024	80,116
Thereafter	125,148
Total borrowings	$ 549,741	$ 550,384

Repurchase Agreements - Summary

Repurchase Agreements - Summary of Repurchase Agreements Accounted as Secured Borrowings (Detail) $ in Thousands	Dec. 31, 2019USD ($)
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase Agreements	$ 90,941
Securities pledged for Repurchase Agreements, Total	106,771
Federal Agency Collateralized Mortgage Obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities pledged for Repurchase Agreements, Total	35,537
Federal Agency Mortgage-backed Pools [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities pledged for Repurchase Agreements, Total	71,234
Remaining Contractual Maturity of the Agreements, Overnight and Continuous [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Repurchase Agreements	90,941
Securities pledged for Repurchase Agreements, Total	106,771
Remaining Contractual Maturity of the Agreements, Overnight and Continuous [Member] | Federal Agency Collateralized Mortgage Obligations [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities pledged for Repurchase Agreements, Total	35,537
Remaining Contractual Maturity of the Agreements, Overnight and Continuous [Member] | Federal Agency Mortgage-backed Pools [Member]
Assets Sold under Agreements to Repurchase [Line Items]
Securities pledged for Repurchase Agreements, Total	$ 71,234

Repurchase Agreements - Additio

Repurchase Agreements - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of Repurchase Agreements [Abstract]
Maximum amount of outstanding agreements	$ 97.3	$ 61.4
Daily average amount of outstanding agreements	$ 81.3	$ 51.4

Subordinated Debentures - Addit

Subordinated Debentures - Additional Information (Detail) - USD ($)	1 Months Ended						12 Months Ended
	Dec. 31, 2006	Oct. 31, 2004	Jun. 30, 2004	Mar. 30, 2004	Oct. 31, 2003	Jun. 30, 2003	Dec. 31, 2019
Subordinate Debenture [Line Items]
LIBOR period							3 months
Salin Bank Shares [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold					$ 20,000,000
Securities bearing interest rate							90-day LIBOR plus 2.95%
Junior subordinated debentures and the securities variable rate					2.95%
LIBOR period							90 days
Interest rate on junior subordinated debentures and securities							4.86%
Junior subordinated debentures maturity date							Oct. 1, 2033
Carrying value of securities, net of remaining purchase discount							$ 17,700,000
Horizon Statutory Trust Two [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold		$ 10,300,000
Securities bearing interest rate							90-day LIBOR plus 1.95%
Junior subordinated debentures and the securities variable rate		1.95%
LIBOR period							90 days
Interest rate on junior subordinated debentures and securities							3.86%
Junior subordinated debentures maturity date							Nov. 23, 2034
Cost of issuance of the securities							$ 17,500
First call date of the securities							Oct. 31, 2009
Horizon Bancorp Capital Trust Three [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold	$ 12,400,000
Securities bearing interest rate							90-day LIBOR plus 1.65%
Junior subordinated debentures and the securities variable rate	1.65%
LIBOR period							90 days
Interest rate on junior subordinated debentures and securities							3.56%
Junior subordinated debentures maturity date							Jan. 30, 2037
Cost of issuance of the securities							$ 12,647
Alliance Financial Statutory Trust One [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold			$ 5,200,000
Securities bearing interest rate							90-day LIBOR plus 2.65%
Junior subordinated debentures and the securities variable rate			2.65%
LIBOR period							90 days
Interest rate on junior subordinated debentures and securities							4.56%
Junior subordinated debentures maturity date							Jun. 1, 2034
Am Tru Statutory Trust One [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold				$ 3,500,000
Securities bearing interest rate							90-day LIBOR plus 2.85%
Junior subordinated debentures and the securities variable rate				2.85%
LIBOR period							90 days
Interest rate on junior subordinated debentures and securities							4.76%
Junior subordinated debentures maturity date							Dec. 1, 2033
Carrying value of securities, net of remaining purchase discount							$ 3,500,000
Heartland Statutory Trust Two [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold	$ 3,000,000
Securities bearing interest rate							90-day LIBOR plus 1.67%
Junior subordinated debentures and the securities variable rate	1.67%
LIBOR period							90 days
Interest rate on junior subordinated debentures and securities							3.58%
Junior subordinated debentures maturity date							Dec. 1, 2036
Carrying value of securities, net of remaining purchase discount							$ 1,900,000
City Savings Trust [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold						$ 5,000,000
Securities bearing interest rate							90-day LIBOR plus 3.10%
Junior subordinated debentures and the securities variable rate						3.10%
LIBOR period							90 days
Interest rate on junior subordinated debentures and securities							5.01%
Junior subordinated debentures maturity date							Jun. 1, 2033
Carrying value of securities, net of remaining purchase discount							$ 4,400,000

Employee Stock Ownership Plan -

Employee Stock Ownership Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Eligible compensation for ESOP	$ 265,000
Cash contributions and expense recorded for the ESOP	$ 719,000	$ 750,000	$ 600,000
Employee stock ownership plan outstanding shares	1,344,625
Percentage of outstanding shares	3.00%

Employee Thrift and Defined B_2

Employee Thrift and Defined Benefit Plan - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Employer identification number	35-1562417
Employee Thrift Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Bank's expense related to the thrift plan	$ 1,200,000	$ 1,200,000	$ 942,000
Thrift Plan owns outstanding shares	741,650
Percentage of outstanding shares owns with thrift plan	1.60%
Pentegra Defined Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Bank's expense related to the thrift plan	$ 0	$ 0
Pentegra Plan date	Aug. 1, 2007
Employer identification number	13-5645888
Plan number	333
Withdrawal liability	$ 3,100,000

Income Tax - Reconciliation of

Income Tax - Reconciliation of Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Currently payable
Federal	$ 11,143	$ 9,166	$ 12,079
State	140
Deferred
Federal	1,787	1,277	331
State	233
Revaluation of deferred tax assets			2,426
Total income tax expense	13,303	10,443	14,836
Reconciliation of federal statutory to actual tax expense
Federal statutory income tax at 21% in 2019 and 2018 35% in 2017	16,767	13,348	16,783
Tax exempt interest	(2,977)	(1,982)	(2,699)
Tax exempt income	(587)	(448)	(638)
Stock compensation	(324)	(384)	(546)
Revaluation of deferred tax assets			2,426
Other tax exempt income	(313)	(260)	(456)
State tax	295
Nondeductible and other	442	169	(34)
Total income tax expense	$ 13,303	$ 10,443	$ 14,836

Income Tax - Reconciliation o_2

Income Tax - Reconciliation of Income Taxes (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	21.00%	21.00%	35.00%

Income Tax - Reconciliation o_3

Income Tax - Reconciliation of Deferred Tax Assets & Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Allowance for loan losses	$ 4,120	$ 3,831
Net operating loss and tax credits (from acquisitions)	54	1,038
Director and employee benefits	1,890	2,392
Unrealized loss on AFS securities and fair value hedge		2,165
Accrued Pension	775	801
Fair value adjustment on acquisitions		0
Other	2,145	670
Total assets	8,984	10,897
Liabilities
Depreciation	(4,456)	(1,850)
State tax	(10)	(137)
Federal Home Loan Bank stock dividends	(368)	(330)
Difference in basis of intangible assets	(3,427)	(2,919)
Fair value adjustment on acquisitions	(2,488)	(62)
Unrealized gain on AFS securities and fair value hedge	(1,710)
Other	(63)	(119)
Total liabilities	(12,522)	(5,417)
Valuation allowance		(1,038)
Net deferred tax asset/(liability)	$ 3,538	$ 4,442

Income Tax - Additional Informa

Income Tax - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019USD ($)
Income Taxes [Line Items]
Previously acquired institutions amount of allocated income to bad debt deductions	$ 12,800,000
Unrecorded deferred income tax liability	$ 2,700,000
Bad debt reserve, description	Retained earnings of the Bank include approximately $12.8 million for which no deferred income tax liability has been recognized. This amount represents an allocation of previously acquired institutions income to bad debt deductions as of December 31, 1987 for tax purposes only. Reductions of amounts so allocated for purposes other than tax bad debt losses including redemption of bank stock or excess dividends, or loss of “bank” status would create income for tax purposes only, which would be subject to the then-current corporate income tax rate.
State Tax Jurisdiction [Member]
Income Taxes [Line Items]
Tax Credit Carryforward, Amount	$ 900,000
Minimum [Member] | Federal Jurisdiction [Member]
Income Taxes [Line Items]
Operating loss carry forward expiration year	2031

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax effect	$ (1,708)	$ 2,167
Total accumulated other comprehensive loss	6,432	(8,144)
Unrealized Gain (Loss) on Securities Available for Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), before tax	12,687	(8,561)
Unamortized Gain on Securities Held to Maturity, Previously Transferred from AFS [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), before tax	(107)	10
Unrealized Loss on Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income (loss), before tax	$ (4,440)	$ (1,760)

Commitments, Off-Balance Shee_2

Commitments, Off-Balance Sheet Risk and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments to make loans	$ 958,700,000	$ 873,800,000
Commitments under outstanding standby letters of credit	17,300,000	$ 4,800,000
Anticipated losses from unused commitments	$ 0

Regulatory Capital - Summary of

Regulatory Capital - Summary of Regulatory Capital Requirement (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), Actual, Amount	$ 548,364	$ 427,616
Total capital (to risk-weighted assets), Actual, Ratio	13.95%	13.39%
Total capital (to risk-weighted assets), For capital adequacy purposes, Amount	$ 314,395	$ 255,419
Total capital (to risk-weighted assets), For capital adequacy purposes, Ratio	8.00%	8.00%
Total capital (to risk-weighted assets), Required for capital1 adequacy purposes with capital buffer, Amount	$ 412,644	$ 315,283
Total capital (to risk-weighted assets), Required for capital1 adequacy purposes with capital buffer, Ratio	10.50%	9.875%
Tier 1 capital (to average assets), Actual, Amount	$ 530,643	$ 409,760
Tier 1 capital (to average assets), Actual, Ratio	13.50%	12.83%
Tier 1 capital (to average assets), For capital adequacy purposes, Amount	$ 235,796	$ 191,565
Tier 1 capital (to average assets), For capital adequacy purpose, Ratio	6.00%	6.00%
Tier 1 capital (to average assets), Required for capital1 adequacy purposes with capital buffer, Amount	$ 334,044	$ 251,429
Tier 1 capital (to average assets), Required for capital1 adequacy purposes with capital buffer, Ratio	8.50%	7.875%
Common equity tier 1 capital, Actual Amount	$ 473,150	$ 371,297
Common equity tier 1 capital, Actual Ratio	12.04%	11.63%
Common equity tier 1 capital,For capital adequacy purposes, Amount	$ 176,846	$ 143,673
Common equity tier 1 capital, For capital adequacy purpose, Ratio	4.50%	4.50%
Common equity tier 1 capital (to risk-weighted assets), Required for capital1 adequacy purposes with capital buffer, Amount	$ 275,094	$ 203,537
Common equity tier 1 capital (to risk-weighted assets), Required for capital1 adequacy purposes with capital buffer, Ratio	7.00%	6.375%
Tier 1 capital (to average assets), Actual, Amount	$ 530,643	$ 409,760
Tier 1 capital (to average assets), Actual, Ratio	10.50%	10.12%
Tier 1 capital (to average assets), For capital adequacy purposes, Amount	$ 202,111	$ 162,033
Tier 1 capital (to average assets), For capital adequacy purpose, Ratio	4.00%	4.00%
Tier 1 capital (to average assets), Required for capital1 adequacy purposes with capital buffer, Amount	$ 202,111	$ 162,033
Tier 1 capital (to average assets), Required for capital1 adequacy purposes with capital buffer, Ratio	4.00%	4.00%
Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), Actual, Amount	$ 497,227	$ 396,755
Total capital (to risk-weighted assets), Actual, Ratio	12.65%	12.43%
Total capital (to risk-weighted assets), For capital adequacy purposes, Amount	$ 314,452	$ 255,419
Total capital (to risk-weighted assets), For capital adequacy purposes, Ratio	8.00%	8.00%
Total capital (to risk-weighted assets), Required for capital1 adequacy purposes with capital buffer, Amount	$ 412,718	$ 315,283
Total capital (to risk-weighted assets), Required for capital1 adequacy purposes with capital buffer, Ratio	10.50%	9.875%
Total capital (to risk-weighted assets), For well capitalized purpose, Amount	$ 393,065	$ 319,274
Total capital (to risk-weighted assets), For well capitalized purpose, Ratio	10.00%	10.00%
Tier 1 capital (to average assets), Actual, Amount	$ 479,506	$ 378,899
Tier 1 capital (to average assets), Actual, Ratio	12.20%	11.87%
Tier 1 capital (to average assets), For capital adequacy purposes, Amount	$ 235,823	$ 191,565
Tier 1 capital (to average assets), For capital adequacy purpose, Ratio	6.00%	6.00%
Tier 1 capital (to average assets), Required for capital1 adequacy purposes with capital buffer, Amount	$ 334,082	$ 251,429
Tier 1 capital (to average assets), Required for capital1 adequacy purposes with capital buffer, Ratio	8.50%	7.875%
Tier 1 capital (to average assets), For well capitalized purpose, Amount	$ 314,430	$ 255,420
Tier 1 capital (to average assets), For well capitalized purposes, Ratio	8.00%	8.00%
Common equity tier 1 capital, Actual Amount	$ 479,506	$ 378,899
Common equity tier 1 capital, Actual Ratio	12.20%	11.87%
Common equity tier 1 capital,For capital adequacy purposes, Amount	$ 176,867	$ 143,674
Common equity tier 1 capital, For capital adequacy purpose, Ratio	4.50%	4.50%
Common equity tier 1 capital (to risk-weighted assets), Required for capital1 adequacy purposes with capital buffer, Amount	$ 275,126	$ 203,537
Common equity tier 1 capital (to risk-weighted assets), Required for capital1 adequacy purposes with capital buffer, Ratio	7.00%	6.375%
Common equity tier 1 capital, For well capitalized purpose, Amount	$ 255,475	$ 207,528
Common equity tier 1 capital, For well capitalized purposes, Ratio	6.50%	6.50%
Tier 1 capital (to average assets), Actual, Amount	$ 479,506	$ 378,899
Tier 1 capital (to average assets), Actual, Ratio	9.49%	9.34%
Tier 1 capital (to average assets), For capital adequacy purposes, Amount	$ 202,110	$ 162,327
Tier 1 capital (to average assets), For capital adequacy purpose, Ratio	4.00%	4.00%
Tier 1 capital (to average assets), Required for capital1 adequacy purposes with capital buffer, Amount	$ 202,110	$ 162,327
Tier 1 capital (to average assets), Required for capital1 adequacy purposes with capital buffer, Ratio	4.00%	4.00%
Tier 1 capital (to average assets), For well capitalized purpose, Amount	$ 252,638	$ 202,908
Tier 1 capital (to average assets), For well capitalized purposes, Ratio	5.00%	5.00%

Regulatory Capital - Additional

Regulatory Capital - Additional Information (Detail)	Dec. 31, 2019
Schedule Of Regulatory Assets And Liabilities [Line Items]
Capital conservation buffer	2.50%

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock Based Compensation [Line Items]
Share-based compensation, performance awards, performance goals description	The performance shares that are awarded become earned and vested based on the achievement of certain performance goals during a performance period as established by the Committee at the time of each grant. The performance goals under the presently-awarded grant agreements are based on a comparison of the Company’s average performance over the performance period for the return on common equity, compounded annual growth rate of total assets, and return on average assets, all as relative to the average performance for publicly traded banks with total assets between $1 billion and $5 billion on the SNL Bank Index. Holders of performance share awards receive pass-through dividends but do not have any voting rights before the performance shares are earned and vested.
Total assets	$ 5,246,829,000	$ 4,246,688,000
Tax benefit associated with compensation expense	45,000	53,000	$ 114,000
Total compensation cost	215,000	251,000	325,000
Total compensation cost	920,000	626,000	460,000
Cash received from option exercise	236,000	493,000	1,600,000
Actual tax benefit realized for the tax deductions	104,000	$ 213,000	$ 522,000
Unrecognized compensation cost	$ 1,500,000
Weighted-average period cost over which cost is expected to be recognized	1 year 1 month 6 days
Option Activity Under the 2013 Plan [Member]
Stock Based Compensation [Line Items]
Maximum common shares issued under the plan	1,556,325
Number of shares available incentive stock options	225,000
Non-option awards granted	900,000
Weighted average grant-date fair value of options granted	$ 4.44	$ 5.54	$ 4.83
Option Activity Under the 2003 Plan [Member]
Stock Based Compensation [Line Items]
Maximum common shares issued under the plan	759,375
Number of shares available incentive stock options	759,375
Non-option awards granted	379,687
Additional common shares available for issuance	885,937
Performance Based Share Awards [Member] | Minimum [Member]
Stock Based Compensation [Line Items]
Total assets	$ 1,000,000,000
Performance Based Share Awards [Member] | Maximum [Member]
Stock Based Compensation [Line Items]
Total assets	5,000,000,000
Restricted and Performance Shares [Member]
Stock Based Compensation [Line Items]
Tax benefit associated with compensation expense	148,000	$ 79,000	$ 47,000
Total compensation cost	215,000	251,000
Total compensation cost	$ 705,000	$ 376,000	$ 135,000

Share-Based Compensation - Summ

Share-Based Compensation - Summary of Option Activity (Detail) - Option Activity Under the 2003 Plan [Member] $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)$ / sharesshares
Schedule Of Stock Option Activity [Line Items]
Option Outstanding, Shares, Beginning balance | shares	21,300
Option Exercised, Shares | shares	(8,625)
Option Outstanding, Shares, Ending balance | shares	12,675
Option Exercisable, Shares, Ending balance | shares	12,675
Option Outstanding, Weighted Average Exercise Price, Beginning balance | $ / shares	$ 5.03
Option Exercised, Weighted Average Exercise Price | $ / shares	4.45
Option Outstanding, Weighted Average Exercise Price, Ending balance | $ / shares	5.42
Option Exercisable, Weighted Average Exercise Price, Ending balance | $ / shares	$ 5.42
Option Outstanding, Weighted Average Remaining Contractual Term	1 year 14 days
Option Exercisable, Weighted Average Remaining Contractual Term	1 year 14 days
Option Outstanding, Aggregate Intrinsic Value | $	$ 172,096
Option Exercisable, Aggregate Intrinsic Value | $	$ 172,096

Share-Based Compensation - Fair

Share-Based Compensation - Fair Value of Options Granted (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Dividend yields	2.39%	1.99%	1.75%
Volatility factors of expected market price of common stock	28.67%	28.60%	28.52%
Risk-free interest rates	2.61%	2.85%	2.42%
Expected life of options	8 years	8 years	8 years

Share-Based Compensation - Su_2

Share-Based Compensation - Summary of Option Activity Under 2013 Plan (Detail) - Option Activity Under the 2013 Plan [Member] $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)$ / sharesshares
Schedule Of Stock Option Activity [Line Items]
Option Outstanding, Shares, Beginning balance | shares	307,317
Option Granted, Shares | shares	35,966
Option Exercised, Shares | shares	(24,256)
Option Forfeited, Shares | shares	(2,250)
Option Outstanding, Shares, Ending balance | shares	316,777
Option Exercisable, Shares, Ending balance | shares	242,814
Option Outstanding, Weighted Average Exercise Price, Beginning balance | $ / shares	$ 12.28
Option Granted, Weighted Average Exercise Price | $ / shares	16.74
Option Exercised, Weighted Average Exercise Price | $ / shares	9.75
Option Forfeited, Weighted Average Exercise Price | $ / shares	10.38
Option Outstanding, Weighted Average Exercise Price, Ending balance | $ / shares	12.99
Option Exercisable, Weighted Average Exercise Price, Ending balance | $ / shares	$ 11.58
Option Outstanding, Weighted Average Remaining Contractual Term	6 years 4 months 13 days
Option Exercisable, Weighted Average Remaining Contractual Term	5 years 8 months 26 days
Option Outstanding, Aggregate Intrinsic Value | $	$ 1,822,924
Option Exercisable, Aggregate Intrinsic Value | $	$ 1,802,010

Share-Based Compensation - Su_3

Share-Based Compensation - Summary of Status of Non-vested, Restricted and Performance Shares (Detail) - Restricted and Performance Shares [Member]	12 Months Ended
	Dec. 31, 2019$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested beginning of year, Shares | shares	176,538
Vested, Shares | shares	(43,358)
Granted, Shares | shares	84,526
Forfeited, Shares | shares	(4,137)
Non-vested, end of year, Shares | shares	213,569
Non-vested beginning of year, Weighted Average Grant Date Fair Value | $ / shares	$ 16.90
Vested, Weighted Average Grant Date Fair Value | $ / shares	11.17
Granted, Weighted Average Grant Date Fair Value | $ / shares	16.74
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	18.23
Non-vested end of year, Weighted Average Grant Date Fair Value | $ / shares	$ 17.97

Derivative Financial Instrume_3

Derivative Financial Instruments - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
LIBOR period	3 months
Weighted average fixed rate	4.03%	3.76%
Recorded period of effectiveness of cash flow hedges on net income		12 months
Recorded period of effectiveness of fair value hedges on net income	12 months
Recorded period of effectiveness of fair value of derivatives on net income	12 months
Interest Rate Swap [Member]
Derivative [Line Items]
LIBOR period	1 month
Weighted average fixed rate	2.81%
LaPorte Bancorp Inc [Member]
Derivative [Line Items]
LIBOR period	1 month
Weighted average fixed rate	2.31%
Cash Flow Hedging [Member]
Derivative [Line Items]
Notional amount of interest	$ 15.5	$ 30.5
Cash Flow Hedging [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Notional amount of interest	50	50
Cash Flow Hedging [Member] | LaPorte Bancorp Inc [Member]
Derivative [Line Items]
Notional amount of interest	30	30
Derivative in Fair Value Hedging Relationship [Member]
Derivative [Line Items]
Notional amount of interest	$ 361	$ 209.2

Derivative Financial Instrume_4

Derivative Financial Instruments - Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Total Asset Derivatives	$ 11,686	$ 177
Total Liability Derivatives	3,745	1,802
Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total Asset Derivatives	11,422	42
Total Liability Derivatives	15,861	1,802
Derivatives Designated as Hedging Instruments [Member] | Interest Rate Contracts One [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total Asset Derivatives	11,422
Derivatives Designated as Hedging Instruments [Member] | Interest Rate Contracts Two [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total Liability Derivatives	15,861	1,802
Derivatives Designated as Hedging Instruments [Member] | Interest Rate Contracts Two [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total Asset Derivatives		42
Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total Asset Derivatives	264	135
Total Liability Derivatives
Derivatives Not Designated as Hedging Instruments [Member] | Mortgage Loan Contracts [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total Liability Derivatives
Derivatives Not Designated as Hedging Instruments [Member] | Mortgage Loan Contracts [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total Asset Derivatives	$ 264	$ 135

Derivative Financial Instrume_5

Derivative Financial Instruments - Effect of Derivative Instruments on Condensed Consolidated Statements of Income Derivative in Cash Flow Hedging Relationship (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Comprehensive Income on Derivative (Effective Portion)	$ (2,680)	$ (32)	$ 1,404
Cash Flow Hedging [Member] | Interest Rate Contracts One [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Comprehensive Income on Derivative (Effective Portion)	$ (2,117)	$ (25)	$ 913

Derivative Financial Instrume_6

Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statements of Income Derivative in Fair Value Hedging Relationship (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest Income - Loans [Member] | Derivative in Fair Value Hedging Relationship [Member] | Interest Rate Contracts One [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized on Derivative	$ (11,380)	$ (852)	$ (817)
Interest Income - Loans [Member] | Derivative in Fair Value Hedging Relationship [Member] | Interest Rate Contracts Two [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized on Derivative	11,380	852	817
Derivatives Not Designated as Hedging Instruments [Member] | Other income - Gain on Sale of Loans [Member] | Mortgage Loan Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized on Derivative	$ 91	$ (5)	$ (439)

Disclosures about Fair Value _3

Disclosures about Fair Value of Assets and Liabilities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Reduced in carrying amount of mortgage servicing rights	$ 719,000	$ 527,000

Disclosures about Fair Value _4

Disclosures about Fair Value of Assets and Liabilities - Fair Value Measurements of Assets and Liabilities Recognized on a Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	$ 834,776	$ 600,348
U.S. Treasury and Federal Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	1,413	16,608
State and Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	405,768	209,303
Federal Agency Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	269,252	185,003
Federal Agency Mortgage-backed Pools [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	146,572	178,736
Corporate Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	11,771	10,698
Recurring Basis [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	834,776	600,348
Recurring Basis [Member] | U.S. Treasury and Federal Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	1,413	16,608
Recurring Basis [Member] | State and Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	405,768	209,303
Recurring Basis [Member] | Federal Agency Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	269,252	185,003
Recurring Basis [Member] | Federal Agency Mortgage-backed Pools [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	146,572	178,736
Recurring Basis [Member] | Corporate Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	11,771	10,698
Recurring Basis [Member] | Forward Sale Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, fair value	264	135
Recurring Basis [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, fair value	(15,861)	(1,801)
Recurring Basis [Member] | Commitments To Originate Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, fair value	(38)
Recurring Basis [Member] | Interest Rate Swap Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, fair value	11,422	42
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	834,776	600,348
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury and Federal Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	1,413	16,608
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | State and Municipal [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	405,768	209,303
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Federal Agency Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	269,252	185,003
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Federal Agency Mortgage-backed Pools [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	146,572	178,736
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Corporate Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total available-for-sale securities, Fair Value	11,771	10,698
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Forward Sale Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, fair value	264	135
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, fair value	(15,861)	(1,801)
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Commitments To Originate Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, fair value	(38)
Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | Interest Rate Swap Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, fair value	$ 11,422	$ 42

Disclosures about Fair Value _5

Disclosures about Fair Value of Assets and Liabilities - Realized Gains and Losses included in Net Income for Periods in Consolidated Statements of Income (Detail) - Non Interest Income Total Gains and Losses [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Included in net income	$ 91	$ (5)	$ (439)
Hedged Loans [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Included in net income	(11,380)	(852)	(817)
Interest Rate Swap [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Included in net income	11,380	852	817
Derivative Loan Commitments [Member]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Included in net income	$ 91	$ (5)	$ (439)

Disclosures about Fair Value _6

Disclosures about Fair Value of Assets and Liabilities - Other Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans	$ 6,806	$ 5,661
Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans	14,327	12,349
Fair Value, Measurements, Nonrecurring [Member] | Impaired Loans [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans	6,806	5,661
Fair Value, Measurements, Nonrecurring [Member] | Mortgage Servicing Rights [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans	14,327	12,349
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans	6,806	5,661
Fair Value, Measurements, Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]
Impaired loans	$ 14,327	$ 12,349

Disclosures about Fair Value _7

Disclosures about Fair Value of Assets and Liabilities - Qualitative Information about Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements, Other than Goodwill (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)ConsecutivePayment	Dec. 31, 2018USD ($)ConsecutivePayment
Measurement Input, Discount Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable inputs	10
Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value | $	$ 6,806	$ 5,661
Valuation Technique	Collateral based measurement	Collateral based measurement
Impaired loans	Discount to reflect current marketconditions and ultimatecollectability	Discount to reflect current marketconditions and ultimatecollectability
Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair Value | $	$ 14,327	$ 12,349
Valuation Technique	Discounted cash flows	Discounted cash flows
Impaired loans	Discount rate,Constant prepayment rate, Probability of default	Discount rate,Constant prepayment rate, Probability of default
Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount to reflect current market conditions and ultimate collectability	0.00%	0.00%
Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable inputs	8.7	10.2
Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] | Measurement Input, Constant Prepayment Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable inputs	10.2	9.1
Minimum [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] | Measurement Input, Default Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable inputs	0.1	0.1
Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount to reflect current market conditions and ultimate collectability	100.00%	100.00%
Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable inputs	9	11
Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] | Measurement Input, Constant Prepayment Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable inputs	19.8	21.9
Maximum [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] | Measurement Input, Default Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable inputs	2.9	2.8
Weighted Average [Member] | Significant Unobservable Inputs (Level 3) [Member] | Impaired Loans [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Discount to reflect current market conditions and ultimate collectability	7.40%	15.50%
Weighted Average [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] | Measurement Input, Discount Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable inputs	8.7	10.3
Weighted Average [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] | Measurement Input, Constant Prepayment Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable inputs	12.2	9.3
Weighted Average [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member] | Measurement Input, Default Rate [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Unobservable inputs	0.7	0.6

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Summary of Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 98,831	$ 58,492
Interest-earning time deposits	8,455	15,744
Investment securities, held to maturity	207,899	210,112
Loans held for sale	4,088	1,038
Loans (excluding loan level hedges), net	3,631,316	3,004,957
Stock in FHLB	22,447	18,073
Interest receivable	18,828	14,239
Liabilities
Non-interest bearing deposits	709,760	642,129
Interest bearing deposits	3,221,242	2,497,247
Borrowings	549,741	550,384
Interest payable	3,062	2,031
Carrying Amount [Member]
Assets
Cash and due from banks	98,831	58,492
Interest-earning time deposits	8,455	15,744
Investment securities, held to maturity	207,899	210,112
Loans held for sale	4,088	1,038
Loans (excluding loan level hedges), net	3,619,174	2,786,351
Stock in FHLB	22,447	18,073
Interest receivable	18,828	14,239
Liabilities
Non-interest bearing deposits	709,760	642,129
Interest bearing deposits	3,221,242	2,497,247
Borrowings	549,741	550,384
Subordinated debentures	56,311	37,837
Interest payable	3,062	2,031
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets
Cash and due from banks	98,831	58,492
Liabilities
Non-interest bearing deposits	709,760	642,129
Significant Other Observable Inputs (Level 2) [Member]
Assets
Interest-earning time deposits	8,537	15,542
Investment securities, held to maturity	215,147	208,273
Stock in FHLB	22,447	18,073
Interest receivable	18,828	14,239
Liabilities
Interest bearing deposits	3,180,768	2,377,274
Borrowings	546,995	542,311
Subordinated debentures	51,809	35,711
Interest payable	3,062	2,031
Significant Unobservable Inputs (Level 3) [Member]
Assets
Loans held for sale	4,088	1,038
Loans (excluding loan level hedges), net	$ 3,554,951	$ 2,681,741

Condensed Financial Informati_3

Condensed Financial Information (Parent Company Only) - Condensed Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Total cash and cash equivalents	$ 98,831	$ 58,492	$ 59,980	$ 53,421
Other assets	66,628	40,467
Total assets	5,246,829	4,246,688
Liabilities
Other liabilities	50,690	25,068
Stockholders' Equity	656,023	491,992	457,078	340,855
Total liabilities and stockholders' equity	5,246,829	4,246,688
Parent Company [Member]
Assets
Total cash and cash equivalents	50,961	30,653	$ 13,361	$ 15,736
Investment in subsidiaries	666,639	502,844
Other assets	3,882	1,186
Total assets	721,482	534,683
Liabilities
Subordinated debentures	56,311	37,837
Other liabilities	9,148	4,854
Stockholders' Equity	656,023	491,992
Total liabilities and stockholders' equity	$ 721,482	$ 534,683

Condensed Financial Informati_4

Condensed Financial Information (Parent Company Only) - Condensed Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Income (Expense)
Other income									$ 2,394	$ 2,141	$ 1,773
Interest expense	$ (11,879)	$ (12,248)	$ (12,321)	$ (11,093)	$ (9,894)	$ (8,499)	$ (7,191)	$ (6,015)	(47,541)	(31,599)	(16,383)
Employee benefit expense									(65,206)	(56,623)	(51,375)
Income Before Tax									79,841	63,560	47,953
Income Tax Benefit									(13,303)	(10,443)	(14,836)
Net Income Available to Common Shareholders									66,538	53,117	33,117
Parent Company [Member]
Operating Income (Expense)
Dividend income from subsidiaries									46,150	46,950	27,000
Other income											540
Interest expense									(3,209)	(2,475)	(2,791)
Employee benefit expense									(1,687)	(1,423)	(1,094)
Other expense									(416)	(357)	(326)
Income Before Undistributed Income of Subsidiaries									40,838	42,695	23,329
Undistributed Income of Subsidiaries									25,053	9,643	8,804
Income Before Tax									65,891	52,338	32,133
Income Tax Benefit									647	779	984
Net Income Available to Common Shareholders									$ 66,538	$ 53,117	$ 33,117

Condensed Financial Informati_5

Condensed Financial Information (Parent Company Only) - Condensed Statements of Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Comprehensive Income [Line Items]
Net Income	$ 18,543	$ 20,537	$ 16,642	$ 10,816	$ 13,133	$ 13,065	$ 14,115	$ 12,804	$ 66,538	$ 53,117	$ 33,117
Other Comprehensive Income (Loss)
Change in fair value of derivative instruments, net of taxes									(2,117)	(25)	913
Other Comprehensive Income (Loss), Net of Tax									14,576	(3,827)	2,093
Comprehensive Income									81,114	49,290	35,210
Parent Company [Member]
Condensed Comprehensive Income [Line Items]
Net Income									66,538	53,117	33,117
Other Comprehensive Income (Loss)
Change in fair value of derivative instruments, net of taxes									(2,117)	(25)	913
Unrealized appreciation for the period on held to maturity securities, net of taxes									(92)	(150)	(166)
Unrealized appreciation (depreciation) on available for sale securities, net of taxes									16,727	(4,003)	1,371
Less: reclassification adjustment for realized (gains) losses included in net income, net of taxes									59	351	(25)
Other Comprehensive Income (Loss), Net of Tax									14,576	(3,827)	2,093
Comprehensive Income									$ 81,114	$ 49,290	$ 35,210

Condensed Financial Informati_6

Condensed Financial Information (Parent Company Only) - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Activities
Net income	$ 18,543	$ 20,537	$ 16,642	$ 10,816	$ 13,133	$ 13,065	$ 14,115	$ 12,804	$ 66,538	$ 53,117	$ 33,117
Items not requiring (providing) cash
Change in Share based compensation									215	251	325
Other assets									97,629	2,460	6,173
Other liabilities									(608)	658	(5,776)
Net cash provided by operating activities									174,952	72,440	49,064
Investing Activities
Net cash provided by (used in) investing activities									(94,725)	(303,916)	(278,924)
Financing Activities
Net change in borrowings									(71,040)	(13,589)	259,895
Dividends paid on common shares									(20,835)	(15,418)	(11,720)
Proceeds from issuance of stock									1,705	622	1,604
Net cash provided by (used in) financing activities									(39,888)	229,988	236,419
Cash and Cash Equivalents, Beginning of Period				58,492				59,980	58,492	59,980	53,421
Cash and Cash Equivalents, End of Period	98,831				58,492				98,831	58,492	59,980
Lafayette Community Bancorp [Member]
Investing Activities
Acquisition of businesses											20,425
Wolverine Bancorp Inc [Member]
Investing Activities
Acquisition of businesses											12,723
Parent Company [Member]
Operating Activities
Net income									66,538	53,117	33,117
Items not requiring (providing) cash
Equity in undistributed net income of subsidiaries									(25,053)	(9,643)	(8,804)
Change in Share based compensation									215	251	325
Amortization of unearned compensation									705	169	135
Other assets									(5,449)	132	388
Other liabilities									1,629	378	(1,675)
Net cash provided by operating activities									38,585	44,404	23,486
Investing Activities
Repurchase of outstanding stock									(1,595)
Net cash provided by (used in) investing activities									755		(8,942)
Financing Activities
Net change in borrowings									98	(12,316)	(6,803)
Dividends paid on common shares									(20,835)	(15,418)	(11,720)
Proceeds from issuance of stock									1,705	622	1,604
Net cash provided by (used in) financing activities									(19,032)	(27,112)	(16,919)
Net Change in Cash and Cash Equivalents									20,308	17,292	(2,375)
Cash and Cash Equivalents, Beginning of Period				$ 30,653				$ 13,361	30,653	13,361	15,736
Cash and Cash Equivalents, End of Period	$ 50,961				$ 30,653				50,961	$ 30,653	13,361
Parent Company [Member] | Lafayette Community Bancorp [Member]
Investing Activities
Acquisition of businesses											(1,254)
Parent Company [Member] | Wolverine Bancorp Inc [Member]
Investing Activities
Acquisition of businesses											$ (7,688)
Parent Company [Member] | Salin [Member]
Investing Activities
Acquisition of businesses									$ 2,350

Quarterly Results of Operatio_3

Quarterly Results of Operations (Unaudited) - Summary of Quarterly Consolidated Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 53,398	$ 55,711	$ 53,850	$ 45,373	$ 43,730	$ 42,271	$ 40,741	$ 39,426	$ 208,332	$ 166,168	$ 128,483
Interest expense	11,879	12,248	12,321	11,093	9,894	8,499	7,191	6,015	47,541	31,599	16,383
Net interest income	41,519	43,463	41,529	34,280	33,836	33,772	33,550	33,411	160,791	134,569	112,100
Provision for loan losses	340	376	896	364	528	1,176	635	567	1,976	2,906	2,470
Gain (loss) on sale of securities	10		(100)	15	(332)	(122)		11	(75)	(443)	38
Net income	$ 18,543	$ 20,537	$ 16,642	$ 10,816	$ 13,133	$ 13,065	$ 14,115	$ 12,804	$ 66,538	$ 53,117	$ 33,117
Earnings per share:
Basic	$ 0.41	$ 0.46	$ 0.37	$ 0.28	$ 0.35	$ 0.34	$ 0.37	$ 0.33	$ 1.53	$ 1.39	$ 0.96
Diluted	$ 0.41	$ 0.46	$ 0.37	$ 0.28	$ 0.34	$ 0.34	$ 0.37	$ 0.33	$ 1.53	$ 1.38	$ 0.95
Average shares outstanding:
Basic	44,971,676	45,038,021	45,055,117	38,822,543	38,367,972	38,365,379	38,347,612	38,306,395	43,493,316	38,347,059	34,553,736
Diluted	45,103,065	45,113,730	45,130,408	38,906,172	38,488,861	38,534,970	38,519,401	38,468,810	43,597,595	38,495,231	34,760,438

Future Accounting Matters - Add

Future Accounting Matters - Additional Information (Detail) - Accounting Standards Update 2016-13 [Member] - Subsequent Event [Member] $ in Millions	Jan. 01, 2020USD ($)
Maximum [Member]
Retained Earnings Adjustments [Line Items]
Cumulative adjustment	$ 20.8
Minimum [Member]
Retained Earnings Adjustments [Line Items]
Cumulative adjustment	$ 16.2