Premier Financial (PFC) 10-K 28 Feb 19 2018 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Jan. 31, 2019	Jun. 30, 2018
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Entity Registrant Name	FIRST DEFIANCE FINANCIAL CORP
Entity Central Index Key	946,647
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 675.1
Trading Symbol	FDEF
Entity Common Stock, Shares Outstanding		20,067,268
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Small Business	false

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Cash and cash equivalents:
Cash and amounts due from depository institutions		$ 55,962	$ 58,693
Federal funds sold		43,000	55,000
Cash and cash equivalents at beginning of year		98,962	113,693
Securities available-for-sale, carried at fair value		294,076	260,650
Securities held-to-maturity, carried at amortized cost (fair value $526 and $649 at December 31, 2018 and 2017, respectively)		526	648
Marketable Securities, Total		294,602	261,298
Loans held for sale		6,613	10,435
Loans receivable, net of allowance of $28,331 and $26,683 at December 31, 2018 and 2017, respectively		2,511,708	2,322,030
Mortgage servicing rights		10,119	9,808
Accrued interest receivable		9,641	8,706
Federal Home Loan Bank (FHLB) stock		14,217	15,992
Bank owned life insurance		67,660	66,230
Premises and equipment		40,670	40,217
Real estate and other assets held for sale (OREO)		1,205	1,532
Goodwill		98,569	98,569
Core deposit and other intangibles		4,391	5,703
Deferred taxes		0	231
Other assets		23,365	38,959
Total assets		3,181,722	2,993,403
Deposits:
Noninterest-bearing		607,198	571,360
Interest-bearing		2,013,684	1,866,296
Total		2,620,882	2,437,656
Advances from the Federal Home Loan Bank		85,189	84,279
Securities sold under agreements to repurchase		5,741	26,019
Subordinated debentures		36,083	36,083
Advance payments by borrowers		3,652	2,925
Deferred taxes		264	0
Other liabilities		30,322	33,155
Total liabilities		2,782,133	2,620,117
Commitments and Contingent Liabilities (Note 6)
Stockholders' equity:
Preferred stock, $.01 par value per share: 37,000 shares authorized; no shares issued		0	0
Preferred stock, $.01 par value per share: 4,963,000 shares authorized; no shares issued		0	0
Common stock, $.01 par value per share: 50,000,000 shares authorized; 25,398,992 and 25,425,682 shares issued and 20,171,392 and 20,312,082 shares outstanding, respectively(1)	[1]	127	127
Additional paid-in capital		161,593	160,940
Accumulated other comprehensive income, net of tax of $(468) and $117, respectively		(2,148)	217
Retained earnings		295,588	262,900
Treasury stock, at cost, 5,227,600 and 5,113,600 shares respectively	[1]	(55,571)	(50,898)
Total stockholders' equity		399,589	373,286
Total liabilities and stockholders' equity		$ 3,181,722	$ 2,993,403
[1]	Share data has been adjusted to reflect a 2-for-1 stock split on July 12, 2018.

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Held-to-maturity, fair value (in dollars)	$ 526	$ 649
Loans receivable, allowance (in dollars)	$ 28,331	$ 26,683
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	25,398,992	25,425,682
Common stock, shares outstanding	20,171,392	20,312,082
Accumulated other comprehensive income, tax effect (in dollars)	$ (468)	$ 117
Treasury stock, shares	5,227,600	5,113,600
Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	4,963,000	4,963,000
Preferred stock, shares issued	0	0
Cumulative Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	37,000	37,000
Preferred stock, shares issued	0	0

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest Income
Loans	$ 114,398	$ 99,540	$ 80,217
Investment securities:
Taxable	4,738	3,762	3,231
Tax-exempt	3,396	3,180	3,016
Interest-bearing deposits	1,270	836	367
FHLB stock dividends	915	784	552
Total interest income	124,717	108,102	87,383
Interest Expense
Deposits	13,897	8,818	6,261
Federal Home Loan Bank advances and other	1,261	1,470	1,288
Subordinated debentures	1,281	935	753
Securities sold under agreement to repurchase	23	208	138
Total interest expense	16,462	11,431	8,440
Net interest income	108,255	96,671	78,943
Provision for loan losses	1,176	2,949	283
Net interest income after provision for loan losses	107,079	93,722	78,660
Noninterest Income
Insurance commissions	14,085	12,866	10,441
Gain on sale of non-mortgage loans	317	217	753
Gain on sale or call of securities	173	584	509
Trust income	2,091	2,332	1,701
Income from bank owned life insurance	1,767	3,085	909
Other noninterest income	598	1,854	1,538
Total noninterest income	39,208	40,081	34,030
Noninterest Expense
Compensation and benefits	52,566	49,847	40,187
Occupancy	8,641	7,707	7,418
FDIC insurance	1,021	1,250	1,169
Data processing	8,555	7,737	6,367
Other noninterest expense	18,629	18,810	15,952
Total noninterest expense	89,412	85,351	71,093
Income before income taxes	56,875	48,452	41,597
Federal income taxes	10,626	16,184	12,754
Net Income	$ 46,249	$ 32,268	$ 28,843
Earnings per common share (Note 4)
Basic	$ 2.27	$ 1.62	$ 1.61
Diluted	2.26	1.61	1.60
Dividends declared per common share	$ 0.64	$ 0.50	$ 0.44
Service fees and other charges [Member]
Noninterest Income
Revenue from Contract with Customer, Including Assessed Tax	$ 13,100	$ 12,139	$ 10,909
Mortgage banking income [Member]
Noninterest Income
Revenue from Contract with Customer, Including Assessed Tax	$ 7,077	$ 7,004	$ 7,270

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net income	$ 46,249	$ 32,268	$ 28,843
Change in securities available-for-sale (AFS):
Unrealized holding gains (losses) on available-for-sale securities arising during the period	(3,356)	732	(4,933)
Reclassification adjustment for (gains) losses realized in income	(173)	(584)	(509)
Net unrealized gains (losses)	(3,529)	148	(5,442)
Income tax effect	742	(51)	1,904
Net of tax amount	(2,787)	97	(3,538)
Change in unrealized gain/(loss) on postretirement benefit:
Net gain (loss) on defined benefit postretirement medical plan realized during the period	560	(166)	172
Net amortization and deferral	18	20	30
Net gain (loss) activity during the period	578	(146)	202
Income tax effect	(203)	51	(71)
Net of tax amount	375	(95)	131
Total other comprehensive income (loss)	(2,412)	2	(3,407)
Comprehensive income	$ 43,837	$ 32,270	$ 25,436

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands		Total	Preferred Stock [Member]	Common Stock [Member]	Common Stock Warrant [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2015		$ 280,197	$ 0	$ 127	$ 0	$ 125,734	$ 3,622	$ 219,737	$ (69,023)
Balance (in shares) at Dec. 31, 2015	[1]			18,205,662
Net income		28,843						28,843
Other comprehensive income (loss)		(3,407)					(3,407)
Stock based compensation expenses		274				274
Shares issued under stock option plan, net		714				(21)		(26)	761
Shares issued under stock option plan, net (in shares)	[1]			72,716
Restricted share activity under stock incentive plans		517				370		(72)	219
Restricted share activity under stock incentive plans (in shares)	[1]			20,810
Shares issued from direct stock sales		63				33			30
Shares issued from direct stock sales (in shares)	[1]			2,960
Shares repurchased		(6,293)							(6,293)
Shares repurchased (in shares)	[1]			(335,736)
Common stock dividends declared		(7,890)						(7,890)
Balance at Dec. 31, 2016		293,018	0	$ 127	0	126,390	215	240,592	(74,306)
Balance (in shares) at Dec. 31, 2016	[1]			17,966,412
Net income		32,268						32,268
Other comprehensive income (loss)		2					2
Stock based compensation expenses		215				215
Shares issued under stock option plan, net		199				51		(83)	231
Shares issued under stock option plan, net (in shares)	[1]			8,088
Capital stock issuance		56,532				33,792			22,740
Capital stock issuance (in shares)	[1]			2,279,004
Restricted share activity under stock incentive plans		838				447		(18)	409
Restricted share activity under stock incentive plans (in shares)	[1]			55,754
Shares issued from direct stock sales		73				45			28
Shares issued from direct stock sales (in shares)	[1]			2,824
Common stock dividends declared		(9,859)						(9,859)
Balance at Dec. 31, 2017		373,286	0	$ 127	0	160,940	217	262,900	(50,898)
Balance (in shares) at Dec. 31, 2017	[1]			20,312,082
Net income		46,249						46,249
Other comprehensive income (loss)		(2,412)					(2,412)
Adoption of ASU 2018-02 – See Note 2		0					47	(47)
Deferred compensation plan		636							636
Stock based compensation expenses		420				420
Shares issued under stock option plan, net		111				(93)		(270)	474
Shares issued under stock option plan, net (in shares)	[1]			38,628
Restricted share activity under stock incentive plans		568				258		(201)	511
Restricted share activity under stock incentive plans (in shares)	[1]			48,300
Shares issued from direct stock sales		104				68			36
Shares issued from direct stock sales (in shares)	[1]			3,542
Shares repurchased		(6,330)							(6,330)
Shares repurchased (in shares)	[1]			(231,160)
Common stock dividends declared		(13,043)						(13,043)
Balance at Dec. 31, 2018		$ 399,589	$ 0	$ 127	$ 0	$ 161,593	$ (2,148)	$ 295,588	$ (55,571)
Balance (in shares) at Dec. 31, 2018	[1]			20,171,392
[1]	Share data has been adjusted to reflect a 2-for-1 stock split on July 12, 2018.

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Stock [Member]
Stock Repurchased and Retired (in shares)	17,818
Employee Stock Option [Member]
Stock Repurchased and Retired (in shares)	8,872	15,014	3,224

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating Activities
Net income	$ 46,249	$ 32,268	$ 28,843
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	1,176	2,949	283
Provision for depreciation	3,688	3,567	3,356
Net amortization of premium and discounts on loans, securities, deposits and debt obligations	861	740	1,128
Amortization of mortgage servicing rights	1,341	1,464	1,724
Net recovery of mortgage servicing rights	(132)	(89)	(123)
Amortization of intangibles	1,312	1,289	535
Gain on sale of loans	(4,819)	(4,881)	(6,064)
Loss on sale or disposals or write-downs of property, plant and equipment	13	48	0
(Gain) loss on sale or write-down of OREO	581	(56)	(300)
Gain on sale or call of securities	(173)	(584)	(509)
Change in deferred taxes	881	1,261	(615)
Proceeds from sale of loans held for sale	212,688	215,727	262,958
Origination of loans held for sale	(205,884)	(213,479)	(263,679)
Stock based compensation expenses	420	215	274
Restricted stock unit expense	568	838	517
Excess tax benefit (expense) on stock compensation plans	(154)	(171)	(192)
Income from bank owned life insurance	(1,767)	(3,085)	(909)
Change in interest receivable and other assets	(2,878)	(3,591)	(4,121)
Change in accrued interest and other liabilities	(916)	1,527	3,878
Net cash provided by operating activities	53,055	35,957	26,984
Investing Activities
Proceeds from maturities, calls and paydowns of held-to-maturity securities	122	128	59
Proceeds from maturities, calls and paydowns of available-for-sale securities	32,620	32,687	36,390
Proceeds from sale of available-for-sale securities	5,503	34,248	14,871
Proceeds from sale of OREO	887	554	1,705
Proceeds from sale of office properties and equipment	14	849	1
Purchases of available-for-sale securities	(76,647)	(73,007)	(71,276)
Purchases of office properties and equipment	(4,168)	(3,263)	(2,106)
Investment in bank owned life insurance	0	(20,000)	0
Proceeds from bank owned life insurance death benefit	337	0	0
Proceeds from sale of bank owned life insurance	17,689	0	0
Proceeds from FHLB stock redemption	1,775	0	3
Net cash received (paid) in acquisitions	0	19,359	0
Purchase of portfolio mortgage loans	0	(11,476)	(822)
Proceeds from sale of non-mortgage loans	28,729	20,227	20,816
Net increase in loans receivable	(219,885)	(133,184)	(158,121)
Net cash used in investing activities	(213,024)	(132,878)	(158,480)
Financing Activities
Net increase in deposits and advance payments by borrowers	183,764	148,065	145,467
Repayment of Federal Home Loan Bank advances	(34,090)	(31,070)	(959)
Proceeds from Federal Home Loan Bank advances	35,000	10,000	45,000
Decrease in securities sold under repurchase agreements	(20,278)	(5,797)	(25,372)
Cash dividends paid on common stock	(13,043)	(9,859)	(7,890)
Net cash paid for repurchase of common stock	(6,330)	0	(6,293)
Proceeds from exercise of stock options	111	199	714
Proceeds from direct treasury stock sales	104	73	63
Net cash provided by financing activities	145,238	111,611	150,730
Increase (decrease) in cash and cash equivalents	(14,731)	14,690	19,234
Cash and cash equivalents at beginning of period	113,693	99,003	79,769
Cash and cash equivalents at end of period	98,962	113,693	99,003
Supplemental cash flow information:
Interest paid	16,198	11,382	8,370
Income taxes paid	7,950	14,350	12,700
Transfer from other liability to equity	636	0	0
Transfers from loans to other real estate owned and other assets held for sale	1,141	705	583
Transfer from (to) property and equipment to real estate and other assets held for sale	0	(130)	(44)
Sale of bank owned life insurance not yet settled	0	17,840	0
Securities traded but not yet settled	$ 0	$ 548	$ 357

Basis of Presentation

Basis of Presentation	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. Basis of Presentation First Defiance Financial Corp. (“First Defiance” or the “Company”) is a unitary thrift holding company that conducts business through its three wholly owned subsidiaries, First Federal Bank of the Midwest (“First Federal”), First Insurance Group of the Midwest, Inc. (“First Insurance”), and First Defiance Risk Management, First Federal is primarily engaged in attracting deposits from the general public through its branches and using those and other available sources of funds to originate loans primarily in the counties in which its offices are located. First Federal’s traditional banking activities include originating and servicing residential, commercial and consumer loans and providing a broad range of depository, trust and wealth management services. First Insurance is an insurance agency that conducts business (throughout First Federal’s Market) offering property and casualty, and group health and life insurance products. First Defiance Risk Management was incorporated on December 20, 2012, as a wholly owned insurance company subsidiary of the Company to insure the Company and its subsidiaries against certain risks unique to the operations of the Company and for which insurance may not be currently available or economically feasible in today’s insurance marketplace. On June 22, 2018, the Company announced a stock split in the form of a share distribution of two common shares for each outstanding common share. The stock split was distributed on July 12, 2018, to shareholders of record as of July 2, 2018. All share and per share data in this Form 10-K have been adjusted and are reflective of the stock split.

Statement of Accounting Policie

Statement of Accounting Policies	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	2. Statement of Accounting Policies Use of Estimates The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. Earnings Per Common Share Basic earnings per common share is computed by dividing net income applicable to common shares (net income less dividend requirements for preferred stock, accretion of preferred stock discount and redemption of preferred stock) by the weighted average number of shares of common stock outstanding during the period. All outstanding unvested share-based payment awards that contain rights to nonforfeitable dividends are considered participating securities for the calculation. Diluted earnings per common share includes the dilutive effect of additional potential common shares issuable under stock options, warrants, restricted stock awards and stock grants. See also Note 4. Comprehensive Income Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on available-for-sale securities and the net unrecognized actuarial losses and unrecognized prior service costs associated with the Company’s Defined Benefit Postretirement Medical Plan. All items included in other comprehensive income are reported net of tax. See also Notes 5, 16 and 25 and the Consolidated Statements of Comprehensive Income. Cash Flows Cash and cash equivalents include amounts due from banks and overnight investments with the Federal Home Loan Bank (“FHLB”) and the Federal Reserve. Cash and amounts due from depository institutions include required balances on hand or on deposit at the FHLB and Federal Reserve of approximately $1,723,000 and $1,048,000, respectively, at December 31, 2018, to meet regulatory reserve and clearing requirements. Net cash flows are reported for customer loan and deposit transactions, interest-bearing deposits in other financial institutions and repurchase agreements. Investment Securities Securities are classified as held-to-maturity when First Defiance has the positive intent and ability to hold the securities to maturity and are reported at amortized cost, adjusted for premiums and discounts that are recognized in interest income using the interest method over the period to maturity. Securities available-for-sale consists of those securities which might be sold prior to maturity due to changes in interest rates, prepayment risks, yield and availability of alternative investments, liquidity needs or other factors. Available-for-sale securities are stated at fair value, with the unrealized gains and losses, net of tax, reported in other comprehensive income (loss) until realized. Realized gains and losses are included in gains (losses) on securities or other-than-temporary impairment losses on securities. Realized gains and losses on securities sold are recognized on the trade date based on the specific identification method. Interest income includes amortization of purchase premiums and discounts. Premiums and discounts are amortized on the level-yield method without anticipating prepayments, except for mortgage-backed securities where prepayments are expected. Securities with unrealized losses are reviewed quarterly to determine if value impairment is other–than-temporary. In performing this review management considers the length of time and extent that fair value has been less than cost, the financial condition of the issuer, the impact of changes in market interest rates on market value and whether the Company intends to sell or it would be more than likely required to sell the securities prior to their anticipated recovery. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: (1) other-than-temporary impairment (“OTTI”) related to credit loss, which must be recognized in the income statement and (2) OTTI related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. For equity securities, the entire amount of impairment is recognized through earnings. FHLB Stock First Federal is a member of the FHLB system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock is carried at cost, classified as a restricted security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income. At December 31, 2018, the Company held $14.2 million at the FHLB of Cincinnati and $2,500 at the FHLB of Indianapolis. Loans Receivable Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal amount outstanding, net of deferred loan fees and costs, purchase premiums and discounts and the allowance for loan losses. Deferred fees net of deferred incremental loan origination costs, are amortized to interest income generally over the contractual life of the loan using the interest method without anticipating prepayments. The recorded investment in loans includes accrued interest receivable, unamortized premiums and discounts, and net deferred fees and costs and undisbursed loan amounts. Mortgage loans originated and intended for sale in the secondary market are classified as loans held for sale and are carried at the lower of aggregate cost or fair value, as determined by outstanding commitments from investors. Net unrealized losses, if any, are recorded as a valuation allowance and charged to earnings. Mortgage loans held for sale are generally sold with servicing rights retained. The carrying value of mortgage loans sold is reduced by the amount allocated to the servicing right. Gains or losses on sales of mortgage loans are based on the difference between the selling price and the carrying value of the related loan sold. The Company may incur losses pertaining to loans sold to Fannie Mae and Freddie Mac but repurchased due to underwriting issues. Repurchase losses are recognized when the Company determines they are probable and estimable. Interest receivable is accrued on loans and credited to income as earned. The accrual of interest on loans 90 days delinquent or those loans considered impaired is discontinued when, in management’s opinion, the borrower may be unable to meet payments as they become due. For these loans, interest accrual is only to the extent cash payments are received. The accrual of interest on these loans is generally resumed after a pattern of repayment has been established and the collection of principal and interest is reasonably assured. Purchased Credit Impaired Loans The Company acquires loans individually and in groups or portfolios. At acquisition, the Company reviews each loan to determine whether there is evidence of deterioration of credit quality since origination and if it is probable that it will be unable to collect all amounts due according to the loan’s contractual terms. If both conditions exist, the Company determines whether each such loan is to be accounted for individually or whether such loans will be assembled into pools of loans based on common risk characteristics (credit score, loan type and date of origination). The Company considers expected prepayments, and estimates the amount and timing of undiscounted expected principal, interest, and other cash flows (expected at acquisition) for each loan and subsequently aggregated pool of loans. The Company determines the excess of the loan’s or pool’s scheduled contractual principal and contractual interest payments over all cash flows expected at acquisition as an amount that should not be accreted (nonaccretable difference). The remaining amount—representing the excess of the loan’s cash flows expected to be collected over the amount paid—is accreted into interest income over the remaining life of the loan or pool (accretable yield). Over the life of the loan or pool, the Company continues to estimate cash flows expected to be collected, and evaluates whether the present value of its loans determined using the effective interest rates has decreased and, if so, recognizes a loss. Valuation allowances for all acquired loans subject to Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 310 reflect only those losses incurred after acquisition—that is, the present value of cash flows expected at acquisition that are not expected to be collected. Allowance for Loan Losses The allowance for loan losses is maintained at a level believed adequate by management to absorb probable incurred losses in the loan portfolio and is based on the size and current risk characteristics of the loan portfolio, an assessment of individual problem loans, actual loss experience, current economic events in specific industries and geographical areas and other pertinent factors, including general economic conditions. Determination of the allowance is inherently subjective as it requires significant estimates, including the amounts and timing of expected future cash flows on impaired loans, estimated losses on pools of homogeneous loans based on historical loss experience and consideration of economic trends, all of which may be susceptible to significant change. Allocations of the allowance may be made for specific loans, but the entire allowance is available for any loan that, in management’s judgment, should be charged-off. Loan losses are charged-off against the allowance when in management’s estimation it is unlikely that the loan will be collected, while recoveries of amounts previously charged-off are credited to the allowance. A provision for loan loss is charged to operations based on management’s periodic evaluation of the factors previously mentioned, as well as other pertinent factors in order to maintain the allowance for loan losses at the level deemed adequate by management. The determination of whether a loan is considered past due or delinquent is based on the contractual payment terms. Loans are considered past due when the contractual amounts due with respect to principal and interest are not received within 30 days of the contractual due date. All loans are placed on non-accrual status at 90 days past due unless the loan is adequately secured and is in process of collection. Any loan in the portfolio may be placed on non-accrual status prior to becoming 90 days past due when collection of principal or interest is in doubt. The allowance consists of specific and general components. The specific component relates to loans that are individually classified as impaired. Impaired loans have been recognized in conformity with FASB ASC Topic 310. A loan is impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loans agreement. Loans, for which terms have been modified and for which the borrower is experiencing financial difficulties, are considered troubled debt restructurings and classified as impaired. When a loan is considered impaired, an analysis of the net present value of estimated cash flows is performed and an allowance may be established based on the outcome of that analysis, or if the loan is deemed to be collateral dependent an allowance is established based on the fair value of collateral. All modifications are reviewed by the First Federal’s Chief Credit Officer or Credit Administration Officer to determine whether or not the modification constitutes a troubled debt restructure. Commercial and commercial real estate loan relationships greater than $250,000 are individually evaluated for impairment. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported net of the allowance allocation which is determined based on the present value of estimated future cash flows using the loan’s existing rate or at the fair value of collateral if repayment is expected solely from the collateral. Impaired loan relationships less than $250,000 are aggregated by loan segment and risk level and given a specific reserve based on the general reserve factor for that loan segment and risk level. Large groups of smaller balance homogeneous loans, such as consumer and residential real estate loans, are collectively evaluated for impairment, and accordingly, they are not separately identified for impairment disclosures. The following portfolio segments have been identified: Commercial Real Estate Loans (consisting of multi-family residential and non-residential) Commercial Loans Consumer Finance Loans 1-4 Family Residential Real Estate Loans Construction Loans Home Equity and Improvement Loans Consumer finance, 1-4 family residential real estate (including construction) and home equity and improvement loans are subject to adverse employment conditions in the local economy which could increase the default rate on loans. Servicing Rights S ervicing rights are recognized separately when they are acquired through sales of loans. Servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. 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. The Company compares the valuation model inputs and results to published industry data in order to validate the model results and assumptions. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans, driven, generally, by changes in market interest rates. Servicing assets are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. Impairment is determined by stratifying rights into groupings based on predominant risk characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance for an individual grouping, to the extent that fair value is less than the carrying amount. If the Company later determines that all or a portion of the impairment no longer exists for a particular grouping, a reduction of the allowance may be recorded as an increase to income. Changes in valuation allowances are reported with mortgage banking income on the income statement. The fair values of servicing rights are subject to significant fluctuations as a result of changes in estimated and actual prepayment speeds and default rates and losses. Servicing fee income, which is reported on the income statement with mortgage banking 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. Servicing fees totaled $3.8 million, $3.7 million and $3.6 million for the years ended December 31, 2018, 2017 and 2016. Late fees and ancillary fees related to loan servicing are not material. See Note 8. Bank Owned Life Insurance The Company has purchased life insurance policies for certain key employees. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement. Premises and Equipment and Long Lived Assets Land is carried at cost. Premises and equipment are carried at cost less accumulated depreciation and amortization computed principally by the straight-line method over the following estimated useful lives: Buildings and improvements 20 to 50 years Furniture, fixtures and equipment 3 to 15 years Long-lived assets to be held and those to be disposed of and certain intangibles are periodically evaluated for impairment. See Note 9. Goodwill and Other Intangibles Goodwill resulting from business combinations prior to January 1, 2009, represents the excess of the purchase price over the fair value of the net assets of businesses acquired. Goodwill resulting from business combinations after January 1, 2009, is generally determined as the excess of the fair value of the consideration transferred, plus the fair value of any non-controlling interests in the acquiree, over the fair value of the net assets acquired and liabilities assumed as of the acquisition date. Goodwill and intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but tested for impairment at least annually. The Company has selected November 30 as the date to perform the annual impairment test. Intangible assets with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Goodwill is the only intangible asset with an indefinite life on First Defiance’s balance sheet. Other intangible assets consist of core deposit and acquired customer relationship intangible assets arising from whole bank, insurance and branch acquisitions. They are initially recorded at fair value and then amortized on an accelerated basis over their estimated lives, which range from five years for non-compete agreements to 10 to 20 years for core deposit and customer relationship intangibles. See Note 10. Real Estate and Other Assets Held for Sale Real estate and other assets held for sale are comprised of properties or other assets acquired through foreclosure proceedings or acceptance of a deed in lieu of foreclosure. These assets are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. Losses arising from the acquisition of such property are charged against the allowance for loan losses at the time of acquisition. These properties are carried at the lower of cost or fair value, less estimated costs to dispose. If fair value declines subsequent to foreclosure, the property is written down against expense. Costs after acquisition are expensed. Stock Compensation Plans Compensation cost is recognized for stock options and restricted share awards issued to employees and directors, based on the fair value of these awards at the date of grant. A Black-Scholes model is utilized to estimate the fair value of stock options. Restricted shares awards are valued at the market value of Company stock at the date of the grant. Compensation cost is recognized over the required service period, generally defined as the vesting period. For awards with graded vesting, compensation cost is recognized on a straight-line basis over the requisite service period for the entire award. See Note 20. Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in Note 22. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates. Transfers of Financial Assets Transfers of financial assets are accounted for as sales, when control over the assets has been relinquished. Control over transferred assets is deemed to be surrendered when the assets have been isolated from the Company, the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets and the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Mortgage Banking Derivatives Commitments to fund mortgage loans (interest rate locks) to be sold into the secondary market and forward commitments for the future delivery of these mortgage loans are accounted for as free standing derivatives. Fair values of these mortgage derivatives are estimated based on changes in mortgage interest rates from the date the interest on the loan is locked. The Company enters into forward commitments for the future delivery of mortgage loans when interest rate locks are entered into, in order to hedge the change in interest rates resulting from its commitments to fund the loans. Changes in fair values of these derivatives are included in mortgage banking income. Operating Segments Management considers the following factors in determining the need to disclose separate operating segments: (1) the nature of products and services, which are all financial in nature; (2) the type and class of customer for the products and services; in First Defiance’s case retail customers for retail bank and insurance products and commercial customers for commercial loan, deposit, life, health and property and casualty insurance needs; (3) the methods used to distribute products or provide services; such services are delivered through banking and insurance offices and through bank and insurance customer contact representatives. Retail and commercial customers are frequently targets for both banking and insurance products; (4) the nature of the regulatory environment; both banking and insurance entities are subject to various regulatory bodies and a number of specific regulations. Quantitative thresholds as stated in FASB ASC Topic 280, Segment Reporting Dividend Restriction Banking regulations require maintaining certain capital levels and may limit the dividends paid by First Federal to First Defiance. See Note 17 for further details on restrictions. Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded. Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there are any such matters that will have a material effect on the financial statements. Income Taxes Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. The Company recognizes interest and/or penalties related to income tax matters in income tax expense. In December 2017, a law was enacted which changed the corporate federal income tax rate from 35% to 21%, beginning January 1, 2018. Accordingly, the Company’s deferred tax assets and liabilities were re-measured at December 31, 2017, using the 21% corporate federal income tax rate resulting in a net tax expense of $154,000. An effective tax rate of 21% is used to determine after-tax components of other comprehensive income (loss) included in the statements of stockholders’ equity. See Note 18. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. Retirement Plans Pension expense is the net of service and interest cost, return on plan assets and amortization of gains and losses not immediately recognized. Employee 401(k) plan expense is the amount of matching contributions. Deferred compensation and supplemental retirement plan expense allocates the benefits over years of service. See Note 16 and 19. Reclassifications Some items in the prior year financial statements were reclassified to conform to the current presentation which did not result in any changes to net income or equity. Accounting Standards Updates In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers.” This standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies generally will be required to use more judgment and make more estimates than under current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. Subsequent to the issuance of ASU 2014-09, the FASB issued targeted updates to clarify specific implementation issues including ASU No. 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU No. 2016-10, “Identifying Performance Obligations and Licensing,” ASU No. 2016-12, “Narrow-Scope Improvements and Practical Expedients,” and ASU No. 2016-20 “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers.” For financial reporting purposes, this standard allows for either full retrospective adoption, meaning the standard is applied to all of the periods presented, or modified retrospective adoption, meaning the standard is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the standard recognized at the date of initial application. Since the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the new guidance did not have a material impact on revenue most closely associated with financial instruments, including interest income and expense. The Company completed its overall assessment of revenue streams and review of related contracts potentially affected by the ASU, including trust and asset management fees, deposit related fees, interchange fees, merchant income, and annuity and insurance commissions. Based on this assessment, the Company concluded that ASU 2014-09 did not materially change the method in which the Company currently recognizes revenue for these revenue streams. The Company adopted ASU 2014-09 and its related amendments on its required effective date of January 1, 2018, utilizing the modified retrospective approach. Since there was no net income impact upon adoption of the new guidance, a cumulative effect adjustment to opening retained earnings was not deemed necessary. See “Revenue Recognition” below for additional information related to revenue generated from contracts with customers. In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities.” This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments by making targeted improvements to GAAP as follows: (1) require 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. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (3) eliminate the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities; (4) eliminate 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; (5) require public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (6) require an entity 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 when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (7) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans receivable) on the balance sheet or the accompanying notes to the financial statements; and (8) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The adoption of ASU No. 2016-01 on January 1, 2018, did not have a material impact on the Company’s consolidated financial statements. Also in conjunction with the adoption, the Company’s fair value measurement of financial instruments was based upon an exit price notion as required in ASU 2016-01. The guidance was applied on a prospective approach resulting in prior-periods no longer being comparable. In February 2018, the FASB issued ASU No. 2018-02, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This ASU allows a reclassification from accumulated other comprehensive income (“AOCI”) to retained earnings for certain income tax effects stranded in AOCI as a result of public law No. 115-97, known as the Tax Cuts and Jobs Act (“Tax Act”). Consequently, the reclassification eliminates the stranded tax effects resulting from the Tax Act and is intended to improve the usefulness of information reported to financial statement users. However, because the ASU only relates to the reclassification of the income tax effects of the Tax Act, the underlying guidance that requires the effect of a change in tax laws or rates to be included in income from continuing operations is not affected. The Company adopted ASU No. 2018-02 during the first quarter of 2018, and elected to reclassify the income tax effects of the Tax Act from AOCI to retained earnings. The reclassification increased AOCI and decreased retained earnings by $47,000

Business Combinations

Business Combinations	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	3. Business Combinations Effective February 24, 2017, the Company acquired Commercial Bancshares, Inc. (“Commercial Bancshares”) and its subsidiary, The Commercial Savings Bank (“CSB”), pursuant to an Agreement and Plan of Merger (“Merger Agreement”), dated August 23, 2016. The acquisition was accomplished by the merger of Commercial Bancshares into First Defiance, immediately followed by the merger of CSB into First Federal. CSB operated seven full-service banking offices in northwest and north central, Ohio and one commercial loan production office in central Ohio. Commercial Bancshares’ consolidated assets and equity (unaudited) as of February 24, 2017, totaled $348.4 million and $37.5 million, respectively. The Company accounted for the transaction under the acquisition method of accounting which means that the acquired assets and liabilities were recorded at fair value at the date of acquisition. The fair value included in these financial statements is based on final valuations. In accordance with ASC 805, the Company expensed approximately $3.7 million of direct acquisition costs, of which $2.8 million was to settle employment and benefit agreements and for personnel expenses related to operating the new Commercial Bancshares locations. The Company recorded $28.9 million of goodwill and $4.9 million of intangible assets. Goodwill represents the future economic benefits arising from net assets acquired that are not individually identified and separately recognized and is attributable to synergies expected to be derived from the combination of the two entities. The acquisition was consistent with the Company’s strategy to enhance and expand its presence in northwestern and central Ohio. The acquisition offered the Company the opportunity to increase profitability by introducing existing products and services to the acquired customer base as well as add new customers in the expanded market area. The intangible assets were related to core deposits and are being amortized over 10 years on an accelerated basis. For tax purposes, goodwill totaling $28.9 million is non-deductible. Goodwill is evaluated annually for impairment. The following table summarizes the fair value of the total consideration transferred as part of the Commercial Bancshares acquisition as well as the fair value of identifiable assets and liabilities assumed as of the effective date of the transaction. February 24, 2017 (In Thousands) Cash Consideration $ 12,340 Equity – Dollar Value of Issued Shares 56,532 Fair Value of Total Consideration Transferred 68,872 Recognized Amounts of Identifiable Assets Acquired and Liabilities Assumed: Cash and Cash Equivalents 35,411 Federal Funds Sold 2,769 Securities 4,338 Loans 285,448 FHLB Stock of Cincinnati and Other Stock 2,194 Office Properties and Equipment 5,256 Intangible Assets 4,900 Bank-Owned Life Insurance 8,168 Accrued Interest Receivable and Other Assets 3,606 Deposits – NonInterest-Bearing (56,061 ) Deposits – Interest-Bearing (251,931 ) Advances from FHLB (1,403 ) Accrued Interest Payable and Other Liabilities (2,717 ) Total Identifiable Net Assets 39,978 Goodwill $ 28,894 Under the terms of the Merger Agreement, Commercial Bancshares common shareholders had the opportunity to elect to receive 2.3616 shares of common stock of the Company or cash in the amount of $51.00 for each share of Commercial Bancshares common stock, subject to adjustment as provided for in the merger agreement. Total consideration for Commercial Bancshares common shares outstanding was paid 80% in Company stock and 20% in cash. The Company issued 2,279,004 shares of its common stock and paid $12.3 million in cash to the former shareholders of Commercial Bancshares. The following table presents unaudited pro forma information as if the acquisition had occurred on January 1, 2016, after giving effect to certain adjustments. The unaudited pro forma information for the twelve months ended December 31, 2017, and December 31, 2016, includes adjustments for interest income on loans and securities acquired, amortization of intangibles arising from the transaction, interest expense on deposits and borrowings acquired, and the related income tax effects. The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have occurred had the transaction been effected on the assumed date. Pro Forma Twelve Pro Forma Twelve Months Ended Months Ended December 31, 2017 December 31, 2016 (In Thousands, except per share data) Net Interest Income $ 98,856 $ 90,452 Provision for loan losses 2,949 753 Noninterest Income 40,338 35,496 Noninterest Expense 82,597 76,393 Income Before Income Taxes 53,648 48,802 Income Tax Expense 17,780 15,276 Net Income $ 35,868 $ 33,526 Diluted Earnings Per Share $ 3.51 $ 3.29 The above pro forma financial information includes approximately $4.6 million of net income related to the operations of Commercial Bancshares during the twelve months of 2017. The above pro forma financial information related to 2017 excludes merger related costs that totaled $3.7 million on a pre-tax basis. On April 13, 2017, First Defiance and Corporate One Benefits Agency, Inc. (“Corporate One”) jointly announced the acquisition of Corporate One’s business by First Defiance. The total purchase price paid in cash was made up of the following: $6.5 million was paid at closing, $500,000 was due and paid the second quarter of 2018, and up to $2.3 million may be due at the end of a three-year earn-out based on the compound annual growth rate of net revenue over the performance period of Corporate One, for a total maximum purchase price of $9.3 million. The recorded fair value of the $2.3 million earn-out was $1.8 million at December 31, 2017. As of December 31, 2017, the Company recorded goodwill of $7.9 million as well as identifiable intangible assets of $756,000 consisting of a customer relationship intangible of $564,000 and a non-compete intangible of $192,000. The fair value included in these financial statements is based on final valuation. Corporate One was a full-service employee benefits consulting organization founded in 1996 with offices located in Archbold, Findlay, Fostoria and Tiffin, Ohio. Corporate One consulted employers to better manage their employee benefit programs to effectively lead them into the future. The transaction enhanced employee benefit offerings and expanded First Insurance’s presence into adjacent markets in northwest Ohio.

Earnings Per Common Share

Earnings Per Common Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	4. Earnings Per Common Share Basic earnings per share is calculated using the two-class method. The two-class method is an earnings allocation formula under which earnings per share is calculated from common stock and participating securities according to dividends declared and participation rights in undistributed earnings. Under this method, all earnings distributed and undistributed, are allocated to participating securities and common shares based on their respective rights to receive dividends. Unvested share-based payment awards that contain non-forfeitable rights to dividends are considered participating securities (i.e. unvested restricted stock), not subject to performance based measures. The following table sets forth the computation of basic and diluted earnings per common share for the years ended December 31: 2018 2017 2016 (In Thousands, Except Per Share Amounts) Basic Earnings Per Share: Net income available to common shareholders $ 46,249 $ 32,268 $ 28,843 Less: Income allocated to participating securities 16 5 39 Net income allocated to common shareholders $ 46,233 $ 32,263 $ 28,804 Weighted average common shares outstanding Including participating securities 20,358 19,950 17,960 Less: Participating securities 9 18 22 Average common shares 20,349 19,932 17,938 Basic earnings per common share $ 2.27 $ 1.62 $ 1.61 Diluted Earnings Per Share: Net income allocated to common shareholders $ 46,233 $ 32,263 $ 28,804 Weighted average common shares outstanding for basic earnings per common share 20,349 19,932 17,938 Add: Dilutive effects of stock options 119 124 132 Average shares and dilutive potential common shares 20,468 20,056 18,070 Diluted earnings per common share $ 2.26 $ 1.61 $ 1.60 Shares subject to issue upon exercise of options of 10,500 in 2018, zero in 2017 and 25,100 in 2016 were excluded from the diluted earnings per common share calculation as they were anti-dilutive.

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2018
Marketable Securities [Abstract]
Investment [Text Block]	5. Investment Securities The following tables summarize the amortized cost and fair value of available-for-sale securities and held-to-maturity investment securities at December 31, 2018 and 2017, and the corresponding amounts of gross unrealized and unrecognized gains and losses: Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value (In Thousands) 2018 Available-for-sale Obligations of U.S. government corporations and agencies $ 2,519 $ 2 $ (18 ) $ 2,503 Mortgage-backed securities - residential 76,165 111 (1,566 ) 74,710 REMICs 2,712 4 (7 ) 2,709 Collateralized mortgage obligations - residential 103,026 124 (1,689 ) 101,461 Corporate bonds 12,910 44 (148 ) 12,806 Obligations of state and political subdivisions 99,349 1,258 (720 ) 99,887 Total Available-for-Sale $ 296,681 $ 1,543 $ (4,148 ) $ 294,076 Gross Gross Amortized Unrecognized Unrecognized Fair Cost Gains Losses Value (In Thousands) Held-to-Maturity FHLMC certificates $ 8 $ - $ - $ 8 FNMA certificates 31 - - 31 GNMA certificates 12 - - 12 Obligations of states and political subdivisions 475 - - 475 Total Held-to-Maturity $ 526 $ - $ - $ 526 Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value (In Thousands) 2017 Available-for-sale Obligations of U.S. government corporations and agencies $ 518 $ - $ (10 ) $ 508 Mortgage-backed securities - residential 59,942 90 (763 ) 59,269 REMICs 1,072 - (7 ) 1,065 Collateralized mortgage obligations - residential 94,588 180 (892 ) 93,876 Preferred stock - 1 - 1 Corporate bonds 12,914 189 - 13,103 Obligations of state and political subdivisions 90,692 2,426 (290 ) 92,828 Total Available-for-Sale $ 259,726 $ 2,886 $ (1,962 ) $ 260,650 Gross Gross Amortized Unrecognized Unrecognized Fair Cost Gains Losses Value (In Thousands) Held-to-Maturity FHLMC certificates $ 10 $ - $ - $ 10 FNMA certificates 41 1 - 42 GNMA certificates 17 - - 17 Obligations of states and political subdivisions 580 - - 580 Total Held-to-Maturity $ 648 $ 1 $ - $ 649 The amortized cost and fair value of the investment securities portfolio at December 31, 2018, is shown below by contractual maturity. Expected maturities will differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties. For purposes of the maturity tables below, mortgage-backed securities and collateralized mortgage obligations, which are not due at a single maturity date, have not been allocated over maturity groupings. Available-for-Sale Amortized Fair Cost Value (In Thousands) 2018 Available-for-sale Due in one year or less $ 771 $ 773 Due after one year through 22,957 22,969 Due after five years through 34,245 34,904 Due after ten years 56,805 56,550 MBS/CMO/REMIC 181,903 178,880 Total $ 296,681 $ 294,076 Held-to-maturity Due in one year or less $ 31 $ 31 Due after five years through ten years 444 444 MBS 51 51 Total $ 526 $ 526 Securities pledged at year-end 2018 and 2017 had a carrying amount of $143.9 million and $135.4 million, respectively, and were pledged to secure public deposits, securities sold under repurchase agreements and FHLB advances. As of December 31, 2018, the Company’s investment portfolio consisted of 438 securities, 177 of which were in an unrealized loss position. The Company did not hold any single security that was greater than 10% of the Company’s equity at December 31, 2018. The following table summarizes First Defiance’s securities that were in an unrealized loss position at December 31, 2018, and December 31, 2017: Duration of Unrealized Loss Position Less than 12 Months 12 Months or Longer Total Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized Value Loss Value Loss Value Loses (In Thousands) At December 31, 2018 Available-for-sale securities: Obligations of U.S. government corporations and agencies $ - $ - $ 500 $ (18 ) $ 500 $ (18 ) Mortgage-backed securities-residential 11,589 (71 ) 48,665 (1,495 ) 60,254 (1,566 ) REMIC’s - - 857 (7 ) 857 (7 ) Collateralized mortgage obligations 11,613 (53 ) 70,585 (1,636 ) 82,198 (1,689 ) Corporate Bonds 5,752 (148 ) - - 5,752 (148 ) Obligations of state and political subdivisions 11,974 (69 ) 16,492 (651 ) 28,466 (720 ) Held to maturity securities: 8 - 26 - 34 - Total temporarily impaired securities $ 40,936 $ (341 ) $ 137,125 $ (3,807 ) $ 178,061 $ (4,148 ) At December 31, 2017 Available-for-sale securities: Obligations of U.S. government corporations and agencies $ - $ - $ 508 $ (10 ) $ 508 $ (10 ) Mortgage-backed securities-residential 27,881 (215 ) 19,038 (548 ) 46,919 (763 ) REMIC’s 1,065 (7 ) - - 1,065 (7 ) Collateralized mortgage obligations 49,107 (320 ) 20,804 (572 ) 69,911 (892 ) Obligations of state and political subdivisions 14,249 (163 ) 3,370 (127 ) 17,619 (290 ) Held to maturity securities: 12 - 9 - 21 - Total temporarily impaired securities $ 92,314 $ (705 ) $ 43,729 $ (1,257 ) $ 136,043 $ (1,962 ) Management evaluates securities for OTTI on at least a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. The investment portfolio is evaluated for OTTI by segregating the portfolio into two general segments. Investment securities classified as available-for-sale or held-to-maturity are generally evaluated for OTTI under FASB ASC Topic 320. Certain collateralized debt obligations (“CDOs”) are evaluated for OTTI under FASB ASC Topic 325, Investment – Other When OTTI occurs under either model, the amount of the OTTI recognized in earnings depends on whether an entity intends to sell the security or more likely than not will be required to sell the security before recovery of its amortized cost basis less any current period credit loss. If an entity intends to sell or more likely than not will be required to sell the security before recovery of its amortized cost basis less any current period credit loss, the OTTI shall be recognized in earnings equal to the entire difference between the investment’s amortized cost basis and its fair value at the balance sheet date. If an entity does not intend to sell the security and it is not more likely than not that the entity will be required to sell the security before recovery of its amortized cost basis less any current period loss, the OTTI shall be separated into the amount representing the credit loss and the amount related to all other factors. The amount of OTTI related to the credit loss is determined based on the present value of cash flows expected to be collected compared to the book value of the security and is recognized in earnings. The amount of OTTI related to other factors shall be recognized in other comprehensive income, net of applicable taxes. The previous amortized cost basis less the OTTI recognized in earnings shall become the new amortized cost basis of the investment. With the exception of corporate bonds, the securities all have fixed interest rates, and all securities have defined maturities. Their fair value is sensitive to movements in market interest rates. First Defiance has the ability and intent to hold these investments for a time necessary to recover the amortized cost without impacting its liquidity position and it is not more than likely that the Company will be required to sell the investments before anticipated recovery. In 2018, 2017 and 2016, management determined there was no OTTI. There were no credit losses relating to debt securities recognized in earnings for the years ended December 31, 2018, 2017 and 2016. Realized gains from the sales and calls of investment securities totaled $173,000 ($136,000 after tax) in 2018 while there were realized gains of $584,000 ($380,000 after tax) and $509,000 ($331,000 after tax) in 2017 and 2016, respectively. The proceeds from sales and calls of securities and the associated gains and losses for the years ended December 31 are listed below: 2018 2017 2016 (In Thousands) Proceeds $ 5,503 $ 34,248 $ 14,871 Gross realized gains 178 665 509 Gross realized losses (5 ) (81 ) -

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments Contingencies and Guarantees [Text Block]	6. Commitments and Contingent Liabilities Loan Commitments Loan commitments are made to accommodate the financial needs of First Federal’s customers. Standby letters of credit commit the Company to make payments on behalf of customers when certain specified future events occur. They primarily are issued to facilitate customers’ trade transactions. Both arrangements have credit risk, essentially the same as that involved in extending loans to customers, and are subject to the Company’s normal credit policies. Collateral (e.g., securities, receivables, inventory and equipment) is obtained based on management’s credit assessment of the customer. The Company’s maximum obligation to extend credit for loan commitments (unfunded loans and unused lines of credit) and standby letters of credit outstanding on December 31 was as follows (In Thousands): 2018 2017 Fixed Rate Variable Rate Fixed Rate Variable Rate Commitments to make loans $ 44,352 $ 114,308 $ 42,458 $ 161,778 Unused lines of credit 7,523 382,189 6,245 408,831 Standby letters of credit - 7,239 - 7,605 Total $ 51,875 $ 503,736 $ 48,703 $ 578,214 Commitments to make loans are generally made for periods of 60 days or less. The fixed rate loan commitments at December 31, 2018, had interest rates ranging from 3.25% to 18.00% and maturities ranging from less than one year to 30 years. In addition to the above commitments, at December 31, 2018, First Defiance had commitments to sell $8.6 million of loans to Freddie Mac, Fannie Mae, or FHLB of Cincinnati.

Loans

Loans	12 Months Ended
	Dec. 31, 2018
Loans Receivable, Net [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	7. Loans Loans receivable consist of the following: December 31, December 31, (In Thousands) Real Estate: Secured by 1-4 family residential $ 322,686 $ 274,862 Secured by multi-family residential 278,358 248,092 Secured by commercial real estate 1,126,452 987,129 Construction 265,772 265,476 1,993,268 1,775,559 Other Loans: Commercial 509,577 526,142 Home equity and improvement 128,152 135,457 Consumer Finance 34,405 29,109 672,134 690,708 Total loans 2,665,402 2,466,267 Deduct: Undisbursed loan funds (123,293 ) (115,972 ) Net deferred loan origination fees and costs (2,070 ) (1,582 ) Allowance for loan loss (28,331 ) (26,683 ) Totals $ 2,511,708 $ 2,322,030 Loan segments have been identified by evaluating the portfolio based on collateral and credit risk characteristics. The following table discloses the year-to-date activity in the allowance for loan loss for the dates indicated by portfolio segment (In Thousands): Year to Date December 31, 1-4 Family Multi- Family Commercial Construction Commercial Home Equity Consumer Total Beginning Allowance $2,532 $2,702 $10,354 $647 $7,965 $2,255 $228 $26,683 Charge-Offs (261 ) - (1,387 ) - (724 ) (269 ) (233 ) (2,874 ) Recoveries 131 57 720 - 2,221 191 26 3,346 Provisions 479 342 2,354 35 (2,181 ) (151 ) 298 1,176 Ending Allowance $ 2,881 $ 3,101 $ 12,041 $ 682 $ 7,281 $ 2,026 $ 319 $ 28,331 Year to Date December 31, 1-4 Family Multi- Family Commercial Construction Commercial Home Equity Consumer Total Beginning Allowance $2,627 $2,228 $10,625 $450 $7,361 $2,386 $207 $25,884 Charge-Offs (279 ) - (429 ) - (2,301 ) (301 ) (139 ) (3,449 ) Recoveries 115 32 657 - 243 167 85 1,299 Provisions 69 442 (499 ) 197 2,662 3 75 2,949 Ending Allowance $ 2,532 $ 2,702 $ 10,354 $ 647 $ 7,965 $ 2,255 $ 228 $ 26,683 Year to Date December 31, 1-4 Family Multi- Family Commercial Construction Commercial Home Equity Consumer Total Beginning Allowance $3,212 $2,151 $11,772 $517 $5,255 $2,304 $171 $25,382 Charge-Offs (350 ) - (92 ) - (615 ) (268 ) (94 ) (1,419 ) Recoveries 166 - 923 - 335 150 64 1,638 Provisions (401 ) 77 (1,978 ) (67 ) 2,386 200 66 283 Ending Allowance $ 2,627 $ 2,228 $ 10,625 $ 450 $ 7,361 $ 2,386 $ 207 $ 25,884 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 method as of December 31, 2018: (In Thousands) 1-4 Family Multi Family Residential Residential Commercial Home Equity Consumer Real Estate Real Estate Real Estate Construction Commercial & Improvement Finance Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 175 $ 3 $ 95 $ - $ 79 $ 242 $ 1 $ 595 Collectively evaluated for impairment 2,706 3,098 11,946 682 7,202 1,784 318 27,736 Acquired with deteriorated credit quality - - - - - - - - Total ending allowance balance $ 2,881 $ 3,101 $ 12,041 $ 682 $ 7,281 $ 2,026 $ 319 $ 28,331 Loans: Loans individually evaluated for impairment $ 6,774 $ 1,347 $ 26,334 $ - $ 10,477 $ 963 $ 45 $ 45,940 Loans collectively evaluated for impairment 315,385 277,105 1,102,355 142,096 500,730 128,065 34,486 2,500,222 Loans acquired with deteriorated credit quality 1,012 296 846 - 177 - - 2,331 Total ending loans balance $ 323,171 $ 278,748 $ 1,129,535 $ 142,096 $ 511,384 $ 129,028 $ 34,531 $ 2,548,493 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 method as of December 31, 2017: (In Thousands) 1-4 Family Multi Family Residential Residential Commercial Home Equity Consumer Real Estate Real Estate Real Estate Construction Commercial & Improvement Finance Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 167 $ 7 $ 118 $ - $ 187 $ 279 $ - $ 758 Collectively evaluated for impairment 2,365 2,695 10,236 647 7,778 1,976 228 25,925 Acquired with deteriorated credit quality - - - - - - - - Total ending allowance balance $ 2,532 $ 2,702 $ 10,354 $ 647 $ 7,965 $ 2,255 $ 228 $ 26,683 Loans: Loans individually evaluated for impairment $ 6,910 $ 2,278 $ 31,821 $ - $ 14,373 $ 1,176 $ 50 $ 56,608 Loans collectively evaluated for impairment 267,377 245,823 956,238 149,174 513,218 135,098 29,125 2,296,053 Loans acquired with deteriorated credit quality 1,069 301 2,121 - 337 - - 3,828 Total ending loans balance $ 275,356 $ 248,402 $ 990,180 $ 149,174 $ 527,928 $ 136,274 $ 29,175 $ 2,356,489 The following tables presents the average balance, interest income recognized and cash basis income recognized on impaired loans by class of loans for the years ended December 31, 2018, 2017 and 2016 (In Thousands): Twelve Months Ended December 31, 2018 Average Interest Cash Basis Residential Owner Occupied $ 4,704 $ 151 $ 150 Residential Non Owner Occupied 2,354 133 126 Total 1-4 Family Residential Real Estate 7,058 284 276 Multi-Family Residential Real Estate 1,644 90 89 CRE Owner Occupied 9,992 234 221 CRE Non Owner Occupied 2,620 94 93 Agriculture Land 13,827 575 575 Other CRE 1,304 106 106 Total Commercial Real Estate 27,743 1,009 995 Construction - - - Commercial Working Capital 8,047 256 245 Commercial Other 3,501 119 119 Total Commercial 11,548 375 364 Home Equity and Home Improvement 1,150 38 38 Consumer Finance 39 4 4 Total Impaired Loans $ 49,182 $ 1,800 $ 1,766 Twelve Months Ended December 31, 2017 Average Interest Cash Basis Residential Owner Occupied $ 3,811 $ 138 $ 138 Residential Non Owner Occupied 3,038 138 138 Total 1-4 Family Residential Real Estate 6,849 276 276 Multi-Family Residential Real Estate 2,471 58 58 CRE Owner Occupied 10,592 110 109 CRE Non Owner Occupied 3,768 140 133 Agriculture Land 9,667 472 229 Other CRE 1,603 76 70 Total Commercial Real Estate 25,630 798 541 Construction - - - Commercial Working Capital 5,235 129 123 Commercial Other 5,940 109 79 Total Commercial 11,175 238 202 Home Equity and Home Improvement 1,217 43 43 Consumer Finance 59 4 4 Total Impaired Loans $ 47,401 $ 1,417 $ 1,124 Twelve Months Ended December 31, 2016 Average Interest Cash Basis Residential Owner Occupied $ 3,954 $ 244 $ 237 Residential Non Owner Occupied 3,133 211 210 Total 1-4 Family Residential Real Estate 7,087 455 447 Multi-Family Residential Real Estate 3,946 124 123 CRE Owner Occupied 6,925 203 183 CRE Non Owner Occupied 5,351 411 407 Agriculture Land 2,283 128 68 Other CRE 1,632 71 70 Total Commercial Real Estate 16,191 813 728 Construction - - - Commercial Working Capital 1,606 109 90 Commercial Other 2,393 81 79 Total Commercial 3,999 190 169 Home Equity and Home Improvement 1,543 85 83 Consumer Finance 67 8 8 Total Impaired Loans $ 32,833 $ 1,675 $ 1,558 The following table presents loans individually evaluated for impairment by class of loans (In Thousands): December 31, 2018 December 31, 2017 Unpaid Principal Balance* Recorded Allowance Unpaid Recorded Allowance With no allowance recorded: Residential Owner Occupied $ 901 $ 775 $ - $ 2,507 $ 2,364 $ - Residential Non Owner Occupied 950 955 - 1,711 1,708 - Total 1-4 Family Residential Real Estate 1,851 1,730 - 4,218 4,072 - Multi-Family Residential Real Estate 1,296 1,302 - 2,095 2,102 - CRE Owner Occupied 7,464 6,202 - 12,273 11,804 - CRE Non Owner Occupied 1,824 1,659 - 3,085 2,925 - Agriculture Land 14,915 14,994 - 13,029 13,185 - Other CRE 464 462 - 981 768 - Total Commercial Real Estate 24,667 23,317 - 29,368 28,682 - Construction - - - - - - Commercial Working Capital 7,569 7,498 - 5,462 5,422 - Commercial Other 2,095 2,100 - 9,916 7,644 - Total Commercial 9,664 9,598 - 15,378 13,066 - Home Equity and Home Improvement - - - 630 584 - Consumer Finance - - - 42 42 - Total loans with no allowance recorded $ 37,478 $ 35,947 $ - $ 51,731 $ 48,548 $ - With an allowance recorded: Residential Owner Occupied $ 3,926 $ 3,884 $ 148 $ 1,841 $ 1,814 $ 137 Residential Non Owner Occupied 1,152 1,160 27 1,031 1,024 30 Total 1-4 Family Residential Real Estate 5,078 5,044 175 2,872 2,838 167 Multi-Family Residential Real Estate 44 44 3 175 176 7 CRE Owner Occupied 2,419 1,935 38 2,007 1,546 44 CRE Non Owner Occupied 350 353 16 651 593 28 Agriculture Land 37 38 2 293 292 14 Other CRE 1,107 691 39 909 708 32 Total Commercial Real Estate 3,913 3,017 95 3,860 3,139 118 Construction - - - - - - Commercial Working Capital 525 528 55 447 449 77 Commercial Other 560 352 24 854 858 110 Total Commercial 1,085 880 79 1,301 1,307 187 Home Equity and Home Improvement 1,013 963 242 596 592 279 Consumer Finance 45 45 1 8 8 - Total loans with an allowance recorded $ 11,178 $ 9,993 $ 595 $ 8,812 $ 8,060 $ 758 * Presented gross of charge offs The following table presents the current balance of the aggregate amounts of non-performing assets, comprised of non-performing loans and real estate owned on the dates indicated: December 31, December 31, (In Thousands) Non-accrual loans $ 19,016 $ 30,715 Loans over 90 days past due and still accruing - - Total non-performing loans 19,016 30,715 Real estate and other assets held for sale 1,205 1,532 Total non-performing assets $ 20,221 $ 32,247 Troubled debt restructuring, still accruing $ 11,573 $ 13,770 The following table presents the aging of the recorded investment in past due and non-accrual loans as of December 31, 2018, by class of loans: (In Thousands) Current 30-59 days 60-89 days 90+ days Total Total Non Residential Owner Occupied $ 199,664 $ 887 $ 821 $ 1,402 $ 3,110 $ 3,266 Residential Non Owner Occupied 119,988 64 180 165 409 363 Total 1-4 Family Residential Real Estate 319,652 951 1,001 1,567 3,519 3,629 Multi-Family Residential Real Estate 278,748 - - - - 102 CRE Owner Occupied 416,879 52 300 138 490 4,377 CRE Non Owner Occupied 534,823 6 119 - 125 620 Agriculture Land 129,040 66 - 2,869 2,935 5,253 Other Commercial Real Estate 45,232 11 - - 11 - Total Commercial Real Estate 1,125,974 135 419 3,007 3,561 10,250 Construction 142,096 - - - - - Commercial Working Capital 217,832 268 - 3,838 4,106 4,021 Commercial Other 289,125 32 54 235 321 480 Total Commercial 506,957 300 54 4,073 4,427 4,501 Home Equity and Home Improvement 127,346 1,446 146 90 1,682 394 Consumer Finance 34,224 134 77 96 307 126 Total Loans $ 2,534,997 $ 2,966 $ 1,697 $ 8,833 $ 13,496 $ 19,002 The following table presents the aging of the recorded investment in past due and non-accrual loans as of December 31, 2017, by class of loans (In Thousands): Current 30-59 days 60-89 days 90+ days Total Total Non Residential Owner Occupied $ 175,139 $ 821 $ 1,033 $ 1,227 $ 3,081 $ 2,510 Residential Non Owner Occupied 96,400 495 8 233 736 520 Total 1-4 Family Residential Real Estate 271,539 1,316 1,041 1,460 3,817 3,030 Multi-Family Residential Real Estate 247,980 422 - - 422 128 CRE Owner Occupied 393,125 195 188 1,268 1,651 10,775 CRE Non Owner Occupied 403,656 1 91 424 516 2,431 Agriculture Land 131,753 412 - 66 478 4,144 Other Commercial Real Estate 58,784 13 - 204 217 734 Total Commercial Real Estate 987,318 621 279 1,962 2,862 18,084 Construction 149,174 - - - - - Commercial Working Capital 233,632 102 1,264 876 2,242 2,369 Commercial Other 291,455 82 - 517 599 6,474 Total Commercial 525,087 184 1,264 1,393 2,841 8,843 Home Equity and Home Improvement 133,144 2,490 434 206 3,130 591 Consumer Finance 28,800 293 80 2 375 27 Total Loans $ 2,343,042 $ 5,326 $ 3,098 $ 5,023 $ 13,447 $ 30,703 Troubled Debt Restructurings As of December 31, 2018 and 2017, the Company had a recorded investment in troubled debt restructurings (“TDRs”) of $19.2 million and $21.7 million, respectively. The Company allocated $581,000 and $751,000, of specific reserves to those loans at December 31, 2018 and 2017, and committed to lend additional amounts totaling up to $169,000 and $242,000 at December 31, 2018 and 2017. The Company offers various types of concessions when modifying a loan, however, forgiveness of principal is rarely granted. Each TDR is uniquely designed to meet the specific needs of the borrower. Commercial loans modified in a TDR often involve temporary interest-only payments, term extensions, and converting revolving credit lines to term loans. Additional collateral or an additional guarantor is often requested when granting a concession. Commercial real estate loans modified in a TDR often involve temporary interest-only payments, re-amortization of remaining debt in order to lower payments, and sometimes reducing the interest rate lower than the current market rate. Residential mortgage loans modified in a TDR are comprised of loans where monthly payments are lowered, either through interest rate reductions or principal only payments for a period of time, to accommodate the borrowers’ financial needs, interest is capitalized into principal, or the term and amortization are extended. Home equity modifications are made infrequently and usually involve providing an interest rate that is lower than the borrower would be able to obtain due to credit issues. All retail loans where the borrower is in bankruptcy are classified as TDRs regardless of whether or not a concession is made. Of the loans modified in a TDR, $7.6 million are on non-accrual status and partial charge-offs have in some cases been taken against the outstanding balance. Loans modified as a TDR may have the financial effect of increasing the allowance associated with the loan. If the loan is determined to be collateral dependent, the estimated fair value of the collateral, less any selling costs is used to determine if there is a need for a specific allowance or charge-off. If the loan is determined to be cash flow dependent, the allowance is measured based on the present value of expected future cash flows discounted at the loan’s pre-modification effective interest rate. The following table presents loans by class modified as TDRs that occurred during the years indicated (Dollars in Thousands): Loans Modified as a TDR for the Loans Modified as a TDR for the Loans Modified as a TDR for the TDRs Number Recorded Number Recorded Number of Recorded Residential Owner Occupied 18 $ 980 24 $ 982 17 $ 778 Residential Non Owner Occupied 4 189 5 193 5 494 Multi Family - - - - 2 1,885 CRE Owner Occupied 12 1,639 2 149 - - CRE Non Owner Occupied 1 42 1 262 5 974 Agriculture Land - - 5 1,700 1 45 Other CRE - - 2 153 1 348 Commercial Working Capital 5 2,898 7 1,475 1 226 Commercial Other 1 44 7 3,833 1 587 Home Equity and Home Improvement 7 89 6 152 9 281 Consumer Finance 8 29 5 14 2 14 Total 56 $ 5,910 64 $ 8,913 44 $ 5,632 The loans described above increased the allowance for loan losses (“ALLL”) by $110,000 for the year ended December 31, 2018, decreased the ALLL by $104,000 for the year ended December 31, 2017, and increased the ALLL by $413,000 for the year ended December 31, 2016. Of the 2018 modifications, four were made a TDR due to terming out lines of credit, 18 were made a TDR due to advancing or renewing money to a watch list credit, one loan was made a TDR due to a reduction of the interest rate, five were made a TDR due to extending the maturity, 18 were made a TDR due to bankruptcy and 10 were made a TDR because the current debt was refinanced due to maturity or for payment relief. The following table presents loans by class modified as TDRs for which there was a payment default within twelve months following the modification during the indicated: Twelve Months Ended Twelve Months Ended Twelve Months Ended TDRs That Subsequently Defaulted: Number of Recorded Number of Recorded Number Recorded Residential Owner Occupied 1 $ 76 - $ - - $ - Residential Non Owner Occupied 1 45 - - - - CRE Owner Occupied - - - - - - CRE Non Owner Occupied - - - - 1 205 Agriculture Land - - - - - - Other CRE - - - - - - Commercial Working Capital 3 2,644 - - - - Commercial Other 1 30 - - - - Home Equity and Home Improvement 1 61 - - - - Consumer - - - - - - Total 7 $ 2,856 - $ - 1 $ 205 The TDRs that subsequently defaulted described above increased the ALLL by $17,000 for the year ended December 31, 2018, and had no effect on the ALLL for the years ended December 31, 2017 and 2016. A default for purposes of this disclosure is a TDR loan in which the borrower is 90 days contractually past due under the modified terms. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed regarding the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. Credit Quality Indicators Loans are categorized into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information, and current economic trends, among other factors. Loans are analyzed individually by classifying the loans as to credit risk. This analysis includes all non-homogeneous loans, such as commercial and commercial real estate loans and certain homogenous mortgage, home equity and consumer loans. This analysis is performed on a quarterly basis. First Defiance uses the following definitions for risk ratings: Special Mention. Substandard. Doubtful. Not Graded. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass rated loans. As of December 31, 2018, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows (In Thousands): Class Pass Special Substandard Doubtful Not Total Residential Owner Occupied $ 9,419 $ 91 $ 3,130 $ - $ 190,134 $ 202,774 Residential Non Owner Occupied 109,885 700 3,087 - 6,725 120,397 Total 1-4 Family Real Estate 119,304 791 6,217 - 196,859 323,171 Multi-Family Residential Real Estate 276,594 - 2,047 - 107 278,748 CRE Owner Occupied 402,008 5,724 9,547 - 89 417,368 CRE Non Owner Occupied 529,842 2,807 2,297 - - 534,946 Agriculture Land 111,595 4,023 16,358 - - 131,976 Other CRE 42,189 730 1,244 - 1,082 45,245 Total Commercial Real Estate 1,085,634 13,284 29,446 - 1,171 1,129,535 Construction 122,775 219 - - 19,102 142,096 Commercial Working Capital 205,903 6,546 9,489 - - 221,938 Commercial Other 279,234 7,011 3,201 - - 289,446 Total Commercial 485,137 13,557 12,690 - - 511,384 Home Equity and Home Improvement - - 434 - 128,594 129,028 Consumer Finance - - 206 - 34,325 34,531 Total Loans $ 2,089,444 $ 27,851 $ 51,040 $ - $ 380,158 $ 2,548,493 As of December 31, 2017, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows (In Thousands): Class Pass Special Substandard Doubtful Not Total Residential Owner Occupied $ 7,534 $ 99 $ 2,367 $ - $ 168,220 $ 178,220 Residential Non Owner Occupied 85,802 935 3,835 - 6,564 97,136 Total 1-4 Family Real Estate 93,336 1,034 6,202 - 174,784 275,356 Multi-Family Residential Real Estate 242,969 2,503 2,819 - 111 248,402 CRE Owner Occupied 370,613 10,432 13,575 - 156 394,776 CRE Non Owner Occupied 395,264 3,464 5,444 - - 404,172 Agriculture Land 114,776 2,639 14,816 - - 132,231 Other CRE 56,133 165 1,788 - 915 59,001 Total Commercial Real Estate 936,786 16,700 35,623 - 1,071 990,180 Construction 125,519 1,254 - - 22,401 149,174 Commercial Working Capital 222,526 7,605 5,743 - - 235,874 Commercial Other 280,013 3,443 8,598 - - 292,054 Total Commercial 502,539 11,048 14,341 - - 527,928 Home Equity and Home Improvement - - 600 - 135,674 136,274 Consumer Finance - - 82 - 29,093 29,175 Total Loans $ 1,901,149 $ 32,539 $ 59,667 $ - $ 363,134 $ 2,356,489 Certain loans acquired had evidence that the credit quality of the loan had deteriorated since its origination and in management’s assessment at the acquisition date it was probable that First Defiance would be unable to collect all contractually required payments due. In accordance with FASB ASC Topic 310 Subtopic 30, Loans and Debt Securities Acquired with Deteriorated Credit Quality December 31, 2018 December 31, 2017 1-4 Family Residential Real Estate $ 1,045 $ 1,154 Multi-Family Residential Real Estate 300 309 Commercial Real Estate Loans 899 2,921 Commercial 227 407 Consumer - 2 Total Outstanding Balance $ 2,471 $ 4,793 Recorded Investment, net of allowance of $0 $ 2,331 $ 3,828 Accretable yield, or income expected to be collected, is as follows: 2018 2017 Balance at January 1 $ 804 $ - New Loans Purchased - 1,018 Accretion of Income (139 ) (163 ) Reclassification from Non-accretable - - Charge-off of Accretable Yield (197 ) (8 ) Balance at December 31 $ 468 $ 847 For those purchased loans disclosed above, the Company did not increase the allowance for loan losses during the twelve months ended December 31, 2018 or 2017. No allowances for loan losses were reversed during the same period. Contractually required payments receivable of loans purchased with evidence of credit deterioration during the period ended December 31, 2017, using information as of the date of acquisition are included in the table below. There were no such loans purchased during the year ended December 31, 2018. (In Thousands) 1-4 Family Residential Real Estate $ 1,720 Commercial Real Estate 4,724 Commercial 785 Consumer 4 Total $ 7,233 Cash Flows Expected to be Collected at Acquisition $ 5,721 Fair Value of Acquired Loans at Acquisition $ 4,703 Loans to executive officers, directors, and their affiliates are as follows: Years Ended December 31, 2018 2017 (In Thousands) Beginning balance $ 16,728 $ 16,199 New loans 10,806 5,857 Effect of changes in composition of related parties (217 ) - Repayments (5,754 ) (5,328 ) Ending Balance $ 21,563 $ 16,728 Foreclosure Proceedings Consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure totaled $796,000 as of December 31, 2018.

Mortgage Banking

Mortgage Banking	12 Months Ended
	Dec. 31, 2018
Mortgage Banking [Abstract]
Mortgage Banking [Text Block]	8. Mortgage Banking Net revenues from the sales and servicing of mortgage loans consisted of the following: Years Ended December 31, 2018 2017 2016 (In Thousands) Gain from sale of mortgage loans $ 4,502 $ 4,664 $ 5,311 Mortgage loan servicing revenue (expense): Mortgage loan servicing revenue 3,784 3,714 3,560 Amortization of mortgage servicing rights (1,341 ) (1,464 ) (1,724 ) Mortgage servicing rights valuation adjustments 132 90 123 2,575 2,340 1,959 Net mortgage banking income $ 7,077 $ 7,004 $ 7,270 The unpaid principal balance of residential mortgage loans serviced for third parties was $1.41 billion at December 31, 2018, and $1.39 billion at December 31, 2017. Activity for capitalized mortgage servicing rights (“MSRs”) and the related valuation allowance is as follows: Years Ended December 31, 2018 2017 2016 (In Thousands) Mortgage servicing assets: Balance at beginning of period $ 10,240 $ 10,117 $ 9,893 Loans sold, servicing retained 1,520 1,587 1,948 Amortization (1,341 ) (1,464 ) (1,724 ) Carrying value before valuation allowance at end of period 10,419 10,240 10,117 Valuation allowance: Balance at beginning of period (432 ) (522 ) (645 ) Impairment recovery (charges) 132 90 123 Balance at end of period (300 ) (432 ) (522 ) Net carrying value of MSRs at end of period $ 10,119 $ 9,808 $ 9,595 Fair value of MSRs at end of period $ 10,656 $ 9,930 $ 9,770 Amortization of mortgage servicing rights is computed based on payments and payoffs of the related mortgage loans serviced. The Company had no actual losses from secondary market buy-backs in 2018, 2017 or 2016. Based on management’s estimate of potential losses from secondary market buyback activity, a liability of $43,000 was accrued at both December 31, 2018 and 2017, and is reflected in other liabilities in the Consolidated Statements of Financial Condition. Expense (credit) recognized related to the accrual was $0, $(36,000) and $(135,000) for the years ended December 31, 2018, 2017 and 2016, respectively. The Company’s servicing portfolio is comprised of the following: December 31, 2018 2017 Number of Principal Number of Principal Investor Loans Outstanding Loans Outstanding (In Thousands) Fannie Mae 4,919 $ 461,730 4,920 $ 461,783 Freddie Mac 9,571 937,406 9,420 913,632 Federal Home Loan Bank 99 11,983 88 9,723 Other 17 714 19 930 Totals 14,606 $ 1,411,833 14,447 $ 1,386,068 Custodial escrow balances maintained in connection with serviced loans were $14.3 million and $13.5 million at December 31, 2018 and 2017, respectively. Significant assumptions at December 31, 2018, used in determining the value of MSRs include a weighted average prepayment speed assumption (“PSA”) of 131 and a weighted average discount rate of 12.01%. Significant assumptions at December 31, 2017, used in determining the value of MSRs include a weighted average prepayment rate of 151 PSA and a weighted average discount rate of 12.01%. A sensitivity analysis of the current fair value to immediate 10% and 20% adverse changes in those assumptions as of December 31, 2018, is presented below. These sensitivities are hypothetical. Changes in fair value based on 10% and 20% variation in assumptions generally cannot be extrapolated because the relationship of the change in the assumption to the change in fair value may not be linear. Also, the effect of a variation in a particular assumption on the fair value of the MSR is calculated independently without changing any other assumption. In reality, changes in one factor may result in changes in another (for example, changes in mortgage interest rates, which drive changes in prepayment rate estimates, could result in changes in the discount rates), which might magnify or counteract the sensitivities. 10% Adverse 20% Adverse Change Change (In Thousands) Assumption: Decline in fair value from increase in prepayment rate $ 332 $ 670 Decline in fair value from increase in discount rate 220 459

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment Disclosure [Text Block]	9. Premises and Equipment Premises and equipment are summarized as follows: December 31, 2018 2017 (In Thousands) Cost: Land $ 7,977 $ 7,977 Land improvements 1,326 1,326 Buildings 44,632 44,563 Leasehold improvements 1,015 971 Furniture, fixtures and equipment 34,871 34,216 Construction in process 692 1,402 90,513 90,455 Less allowances for depreciation and amortization (49,843 ) (50,238 ) $ 40,670 $ 40,217 Depreciation expense was $3.7 million, $3.6 million and $3.4 million for the years ended December 31, 2018, 2017 and 2016, respectively. Lease Agreements The Company has entered into lease agreements covering nine First Insurance offices, five banking center locations, one loan production office, two land leases for which the Company owns the banking centers, one land lease which is primarily used for parking, one land lease for future branch development and numerous stand-alone Automated Teller Machine sites with varying terms and options to renew. First Federal and First Insurance share office space for one lease as a branch and insurance office. Future minimum commitments under non-cancelable operating leases are as follows (In Thousands): 2019 $ 967 2020 884 2021 843 2022 768 2023 739 Thereafter 8,078 Total $ 12,279 Rental expenses under operating leases amounted to $1.0 million, $691,000 and $571,000 in 2018, 2017, and 2016, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets Disclosure [Text Block]	10. Goodwill and Intangible Assets Goodwill The change in the carrying amount of goodwill for the year is as follows: December 31, 2018 2017 (In Thousands) Beginning balance $ 98,569 $ 61,798 Goodwill acquired or adjusted during the year - 36,771 Ending balance $ 98,569 $ 98,569 Acquired Intangible Assets Activity in intangible assets for the years ended December 31, 2018, 2017 and 2016, was as follows: Gross Carrying Accumulated Net Amount Amortization Value (In Thousands) Balance as of January 1, 2016 $ 14,477 $ (12,606 ) $ 1,871 Amortization of intangible assets - (535 ) (535 ) Balance as of December 31, 2016 14,477 (13,141 ) 1,336 Intangible assets acquired 5,656 - 5,656 Amortization of intangible assets - (1,289 ) (1,289 ) Balance as of December 31, 2017 20,133 (14,430 ) 5,703 Amortization of intangible assets - (1,312 ) (1,312 ) Balance as of December 31, 2018 $ 20,133 $ (15,742 ) $ 4,391 Estimated amortization expense for each of the next five years and thereafter is as follows (In Thousands): 2019 $ 1,097 2020 914 2021 744 2022 576 2023 439 Thereafter 621 Total $ 4,391

Deposits

Deposits	12 Months Ended
	Dec. 31, 2018
Deposits [Abstract]
Deposit Liabilities Disclosures [Text Block]	11. Deposits The following schedule sets forth interest expense by type of deposit: Years Ended December 31, 2018 2017 2016 (In Thousands) Checking and money market accounts $ 3,997 $ 2,033 $ 1,463 Savings accounts 115 102 88 Certificates of deposit 9,785 6,683 4,710 Totals $ 13,897 $ 8,818 $ 6,261 Accrued interest payable on deposit accounts amounted to $366,000 and $97,000 at December 31, 2018 and 2017, respectively, which was comprised of $314,000 and $52,000 for certificates of deposit and checking and money market accounts, respectively, at December 31, 2018, and $68,000 and $29,000 for certificates of deposit and checking and money market accounts, respectively, at December 31, 2017. A summary of deposit balances is as follows: December 31, 2018 2017 (In Thousands) Noninterest-bearing checking accounts $ 607,198 $ 571,360 Interest-bearing checking and money market accounts 1,040,471 1,005,519 Savings deposits 292,829 302,022 Retail certificates of deposit less than $250,000 591,822 504,912 Retail certificates of deposit greater than $250,000 88,562 53,843 $ 2,620,882 $ 2,437,656 Scheduled maturities of certificates of deposit at December 31, 2018, are as follows (In Thousands): 2019 $ 417,562 2020 130,756 2021 85,563 2022 33,184 2023 13,319 Thereafter - Total $ 680,384

Advances from Federal Home Loan

Advances from Federal Home Loan Bank	12 Months Ended
	Dec. 31, 2018
Advances from Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Advances, Disclosure [Text Block]	12. Advances from Federal Home Loan Bank First Federal has the ability to borrow funds from the FHLB. First Federal pledges its single-family residential mortgage loan portfolio, certain investment securities; certain first mortgage home equity loans, certain commercial real estate loans, and certain agriculture real estate loans as security for these advances. Advances secured by investment securities must have collateral of at least 105% of the borrowing. Advances secured by residential mortgages must have collateral of at least 125% of the borrowings. Advances secured by commercial real estate loans, and agriculture real estate loans must have collateral of at least 300% of the borrowings. The total level of borrowing is also limited to 50% of total assets and at least 50% of the borrowings must be secured by either one-to-four family residential mortgages or investment securities. Total loans pledged to the FHLB at December 31, 2018, and December 31, 2017, were $1.2 billion and $1.0 billion, respectively. First Federal could obtain advances of up to approximately $447.4 million from the FHLB at December 31, 2018. At year-end, advances from the FHLB were as follows: Principal Terms Advance Amount Range of Maturities Weighted (In Thousands) December 31, 2018 Single maturity fixed rate advances 59,000 January 2019 to March 2022 1.67 % Amortizable mortgage advances 1,213 August 2027 2.14 % Overnight advances 25,000 Overnight 2.45 % Fair value adj. on acquired balances (24 ) $ 85,189 December 31, 2017 Putable advances $ 5,000 March 2018 2.35 % Single maturity fixed rate advances 72,000 January 2018 to March 2022 1.46 % Amortizable mortgage advances 7,306 September 2018 to August 2027 1.85 % Fair value adj. on acquired balances (27 ) $ 84,279 Putable advances are callable at the option of the FHLB on a quarterly basis. Estimated future minimum payments by fiscal year based on maturity date and current interest rates are as follows (In Thousands): 2019 $ 45,926 2020 21,563 2021 15,307 2022 219 2023 3,169 Thereafter 563 Total minimum payments 86,747 Less amounts representing interest (1,534 ) Less fair value adj. on acquired balances (24 ) Totals $ 85,189 First Defiance also utilizes short-term advances from the FHLB to meet cash flow needs and for short-term investment purposes. First Defiance borrows short-term advances under a variety of programs at FHLB. At December 31, 2018 and 2017, there were no amounts outstanding under First Defiance’s Cash Management Advance line of credit. The total available under this line is $15.0 million. In addition, First Defiance has a $100.0 million REPO Advance line of credit available. Twenty-five million was drawn on this line at December 31, 2018. There were no borrowings against this line at December 31, 2017. Amounts are generally borrowed under the Cash Management and REPO lines on an overnight basis.

Junior Subordinated Debentures

Junior Subordinated Debentures Owed to Unconsolidated Subsidiary Trust	12 Months Ended
	Dec. 31, 2018
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust [Abstract]
Junior Subordinated Debentures Owed To Unconsolidated Subsidiary Trust Disclosure [Text Block]	13. Junior Subordinated Debentures Owed to Unconsolidated Subsidiary Trust In March 2007, the Company sponsored an affiliated trust, First Defiance Statutory Trust II (“Trust Affiliate II”) that issued $15 million of Guaranteed Capital Trust Securities (Trust Preferred Securities). In connection with the transaction, the Company issued $15.5 million of Junior Subordinated Deferrable Interest Debentures (“Subordinated Debentures”) to Trust Affiliate II. The Company formed Trust Affiliate II for the purpose of issuing Trust Preferred Securities to third-party investors and investing the proceeds from the sale of these capital securities solely in Subordinated Debentures of the Company. The Subordinated Debentures held by Trust Affiliate II are the sole assets of that trust. The Company is not considered the primary beneficiary of this Trust (variable interest entity), therefore the trust is not consolidated in the Company’s financial statements, but rather the subordinated debentures are shown as a liability. Distributions on the Trust Preferred Securities issued by Trust Affiliate II are payable quarterly at a variable rate equal to the three-month LIBOR rate plus 1.5%. The Coupon rate payable on the Trust Preferred Securities issued by Trust Affiliate II was 4.29% and 3.09% as of December 31, 2018 and 2017, respectively. The Trust Preferred Securities issued by Trust Affiliate II are subject to mandatory redemption, in whole or part, upon repayment of the Subordinated Debentures. The Company has entered into an agreement that fully and unconditionally guarantees the Trust Preferred Securities subject to the terms of the guarantee. The Trust Preferred Securities and Subordinated Debentures mature on June 15, 2037, but can be redeemed at the Company’s option at any time now. The Company also sponsors an affiliated trust, First Defiance Statutory Trust I (“Trust Affiliate I”), that issued $20 million of Trust Preferred Securities in 2005. In connection with this transaction, the Company issued $20.6 million of Subordinated Debentures to Trust Affiliate I. Trust Affiliate I was formed for the purpose of issuing Trust Preferred Securities to third-party investors and investing the proceeds from the sale of these capital securities solely in Subordinated Debentures of the Company. The Junior Debentures held by Trust Affiliate I are the sole assets of the trust. The Company is not considered the primary beneficiary of this Trust (variable interest entity), therefore the trust is not consolidated in the Company’s financial statements, but rather the subordinated debentures are shown as a liability. Distributions on the Trust Preferred Securities issued by Trust Affiliate I are payable quarterly at a variable rate equal to the three-month LIBOR rate plus 1.38%. The Coupon rate payable on the Trust Preferred Securities issued by Trust Affiliate I was 4.17% and 2.97% as of December 31, 2018 and 2017, respectively. The Trust Preferred Securities issued by Trust Affiliate I are subject to mandatory redemption, in whole or in part, upon repayment of the Subordinated Debentures. The Company has entered into an agreement that fully and unconditionally guarantees the Trust Preferred Securities subject to the terms of the guarantee. The Trust Preferred Securities and Subordinated Debentures mature on December 15, 2035, but can be redeemed at the Company’s option at any time now. The subordinated debentures may be included in Tier 1 capital (with certain limitations applicable) under current regulatory guidelines and interpretations. A summary of all junior subordinated debentures issued by the Company to affiliates follows. These amounts represent the par value of the obligations owed to these affiliates, including the Company’s equity interest in the trusts. Junior subordinated debentures owed to the following affiliates were as follows: December 31, 2018 2017 (In Thousands) First Defiance Statutory Trust I due December 2035 $ 20,619 $ 20,619 First Defiance Statutory Trust II due June 2037 15,464 15,464 Total junior subordinated debentures owed to unconsolidated subsidiary Trusts $ 36,083 $ 36,083 Interest on both issues of Trust Preferred Securities may be deferred for a period of up to five years at the option of the issuer.

Securities Sold Under Agreement

Securities Sold Under Agreements to Repurchase and Other Short Term Borrowings	12 Months Ended
	Dec. 31, 2018
Securities Sold Under Agreements to Repurchase and Other Short Term Borrowings [Abstract]
Securities Sold Under Agreements to Repurchase and Other Short Term Borrowings Disclosure [Text Block]	14. Securities Sold Under Agreements to Repurchase and Other Short Term Borrowings Total securities sold under agreement to repurchase are summarized as follows: Years Ended December 31, 2018 2017 (In Thousands, Except Percentages) Securities sold under agreement to repurchase Amounts outstanding at year-end $ 5,741 $ 26,019 Year-end interest rate 0.31 % 0.20 % Average daily balance during year 8,911 23,337 Maximum month-end balance during the year 18,259 26,019 Average interest rate during the year 0.26 % 0.23 % We utilize securities sold under agreements to repurchase to facilitate the needs of our customers and to facilitate secured short-term funding needs. Securities sold under agreements to repurchase are stated at the amount of cash received in connection with the transaction. We monitor levels on a continuous basis. We may be required to provide additional collateral based on the fair value of the underlying securities. Securities pledged as collateral under repurchase agreements are maintained with our safekeeping agent. The remaining contractual maturity of the securities sold under agreements to repurchase in the consolidated balance sheets as of December 31, 2018 and 2017, is presented in the following tables. Overnight and Up to 30 30-90 Days Greater Total At December 31, 2018 (In Thousands) Repurchase agreements: Mortgage-backed securities – residential $ 4,199 $ - $ - $ - $ 4,199 Collateralized mortgage obligations 1,542 - - - 1,542 Total borrowings $ 5,741 $ - $ - $ - $ 5,741 Gross amount of recognized liabilities for repurchase agreements $ 5,741 Overnight and Up to 30 30-90 Days Greater Total At December 31, 2017 (In Thousands) Repurchase agreements: Mortgage-backed securities – residential $ 6,599 $ - $ - $ - $ 6,599 Collateralized mortgage obligations 19,420 - - - 19,420 Total borrowings $ 26,019 $ - $ - $ - $ 26,019 Gross amount of recognized liabilities for repurchase agreements $ 26,019 As of December 31, 2018 and 2017, First Federal had the following undrawn lines of credit facilities available for short-term borrowing purposes: A $20.0 million line of credit with First Tennessee Bank. The rate on the line of credit is at three- month LIBOR, which floats quarterly. This line was undrawn upon as of December 31, 2018 and 2017. A $11.2 million line of credit with the Federal Reserve Bank Discount Window, at an interest rate of 50 basis points over the federal funds rate. The fed funds rate as of December, 31, 2018, was 2.25%. This line was undrawn upon as of December 31, 2018 and 2017. A $20.0 million line of credit with MUFG Union Bank, N.A. The rate on this line of credit is Union Bank’s federal funds rate, which floats daily. This line was undrawn upon as of December 31, 2018 and 2017.

Other Noninterest Expense

Other Noninterest Expense	12 Months Ended
	Dec. 31, 2018
Other Expense, Nonoperating [Abstract]
Other Expense Disclosure Non Operating [Text Block]	15. Other Noninterest Expense The following is a summary of other noninterest expense: Years Ended December 31, 2018 2017 2016 (In Thousands) Legal and other professional fees $ 3,328 $ 3,603 $ 2,902 Marketing 2,407 2,070 1,835 State financial institutions tax 2,118 1,819 1,781 OREO expenses and write-downs 742 177 244 Printing and office supplies 631 626 512 Amortization of intangibles 1,312 1,289 535 Postage 505 523 456 Check charge-offs and fraud losses 415 277 266 Credit and collection expense 379 359 303 Other 6,792 (1) 8,067 (2) 7,118 (3) Total other noninterest expense $ 18,629 $ 18,810 $ 15,952 1) Includes a credit of $806,000 for an accounting correction related to the Deferred Compensation Plan. See Note 19 for further details. 2) Includes $1.1 million of acquisition related expenses. 3) Includes $443,000 of acquisition related expenses and $300,000 of costs associated with termination of a lease agreement.

Postretirement Benefits

Postretirement Benefits	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	16. Postretirement Benefits First Defiance sponsors a defined benefit postretirement plan that is intended to supplement Medicare coverage for certain retirees who meet minimum age requirements. First Federal employees who retired prior to April 1, 1997, and who completed 20 years of service after age 40 receive full medical coverage at no cost. First Federal employees retiring after April 1, 1997, are provided medical benefits at a cost based on their combined age and years of service at retirement. Surviving spouses are also eligible for continued coverage after the retiree is deceased at a subsidy level that is 10% less than what the retiree is eligible for. First Federal employees retiring before July 1, 1997, receive dental and vision care in addition to medical coverage. First Federal employees who retire after July 1, 1997, are not eligible for dental or vision care. First Federal employees who were born after December 31, 1950, are not eligible for the medical coverage described above at retirement. Rather, a one-time medical spending account of up to $10,000 (based on the participant’s age and years of service) will be established to reimburse medical expenses for those individuals. First Insurance employees who were born before December 31, 1950, can continue coverage until they reach age 65, or in lieu of continuing coverage, can elect the medical spending account option, subject to eligibility requirements. Employees hired or acquired after January 1, 2003, are eligible only for the medical spending account option. Included in accumulated other comprehensive income at December 31, 2018, 2017 and 2016, are the following amounts that have not yet been recognized in net periodic benefit cost: December 31, 2018 2017 2016 (In Thousands) Unrecognized prior service cost $ 97 $ 39 $ 52 Unrecognized actuarial losses (86 ) 551 392 Total loss recognized in Accumulated Other 11 590 444 Income tax effect 80 (206 ) (155 ) Net loss recognized in Accumulated Other $ 91 $ 384 $ 289 The prior service cost and actuarial loss included in other comprehensive income and expected to be recognized in net postretirement benefit cost during the fiscal year-ended December 31, 2019, is $14,000 ($11,000 net of tax) and $0, respectively. Reconciliation of Funded Status and Accumulated Benefit Obligation The plan is not currently funded. The following table summarizes benefit obligation and plan asset activity for the plan measured as of December 31 each year: December 31, 2018 2017 (In Thousands) Change in benefit obligation: Benefit obligation at beginning of year $ 3,194 $ 2,985 Service cost 55 58 Interest cost 105 117 Participant contribution 32 29 Plan amendments for acquisitions 72 - Actuarial (gains) / losses (632 ) 166 Benefits paid (184 ) (161 ) Benefit obligation at end of year 2,642 3,194 Change in fair value of plan assets: Balance at beginning of year - - Employer contribution 152 132 Participant contribution 32 29 Benefits paid (184 ) (161 ) Balance at end of year - - Funded status at end of year $ (2,642 ) $ (3,194 ) Net periodic postretirement benefit cost includes the following components: Years Ended December 31, 2018 2017 2016 (In Thousands) Service cost-benefits attributable to service during the period $ 55 $ 58 $ 53 Interest cost on accumulated postretirement benefit obligation 105 117 128 Net amortization and deferral 18 19 30 Net periodic postretirement benefit cost 178 194 211 Net (gain) / loss during the year (632 ) 166 (184 ) Plan amendment for acquisition 72 - 12 Amortization of prior service cost and actuarial losses (18 ) (19 ) (30 ) Total recognized in comprehensive income (578 ) 147 (202 ) Total recognized in net periodic postretirement benefit $ (400 ) $ 341 $ 9 The following assumptions were used in determining the components of the postretirement benefit obligation: 2018 2017 2016 Weighted average discount rates: Used to determine benefit obligations at December 31 4.00 % 3.50 % 4.00 % Used to determine net periodic postretirement benefit cost for years ended December 31 3.50 % 4.00 % 4.25 % Assumed health care cost trend rates at December 31: Health care cost trend rate assumed for next year 6.50 % 7.00 % 7.50 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 3.90 % 5.00 % 5.00 % Year that rate reaches ultimate trend rate 2075 2022 2022 The following benefits are expected to be paid over the next five years and in aggregate for the next five years thereafter. Because the plan is unfunded, the expected net benefits to be paid and the estimated Company contributions are the same amount. Expected to be Paid (In Thousands) 2019 $ 168 2020 181 2021 195 2022 209 2023 181 2024 through 2028 969 Assumed health care cost trend rates have a significant effect on the amounts reported for the health care plans. A one-percentage-point change in assumed health care cost trend rates would have the following effect: One-Percentage-Point One-Percentage-Point Year Ended December 31, Year Ended December 31, 2018 2017 2018 2017 (In Thousands) Effect on total of service and interest cost $ 22 $ 25 $ (18 ) $ (21 ) Effect on postretirement benefit obligation 178 392 (153 ) (333 ) The Company expects to contribute $168,000 before reflecting expected Medicare retiree drug subsidy payments in 2019.

Regulatory Matters

Regulatory Matters	12 Months Ended
	Dec. 31, 2018
Regulatory Capital Requirements [Abstract]
Regulatory Capital Requirements under Banking Regulations [Text Block]	17. Regulatory Matters First Defiance and First Federal are subject to minimum capital adequacy guidelines. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators, which could have a material impact on First Defiance’s financial statements. Under capital adequacy guidelines, First Defiance and First Federal must maintain capital amounts in excess of minimum ratios based on quantitative measures of their assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. In July 2013, the Federal Reserve and the FDIC approved the final rules implementing the Basel Committee on Banking Supervision’s capital guidelines for U.S. banks (commonly known as Basel III). Under the final rules, which began for First Defiance and First Federal on January 1, 2015, and are subject to a phase-in period through January 1, 2019, minimum requirements will increase for both quantity and quality of capital held by First Defiance and First Federal. The rules include a minimum common equity Tier 1 capital to risk-weighted assets ratio (“CET1”) of 4.5% and a capital conservation buffer of 2.5% of risk-weighted assets, which when fully phased-in, effectively results in a minimum CET1 ratio of 7.0%. Basel III raises the minimum ratio of Tier 1 capital to risk-weighted assets from 4.0% to 6.0% (which, with the capital conservation buffer, effectively results in a minimum Tier 1 capital ratio of 8.5% when fully phased-in), which effectively results in a minimum total capital to risk-weighted assets ratio of 10.5% (with the capital conservation buffer fully phased-in), and requires a minimum leverage ratio of 4.0%. Basel III also makes changes to risk weights for certain assets and off-balance sheet exposures. The federal banking agencies have also established a system of “prompt corrective action” to resolve certain problems of undercapitalized banks. The regulatory agencies can initiate certain mandatory actions if First Federal fails to meet the minimum capital requirements, which could have a material effect on First Defiance’s financial statements. The following schedule presents First Defiance consolidated and First Federal’s regulatory capital ratios as of December 31, 2018 and 2017 (Dollars in Thousands): December 31, 2018 Actual Minimum Required for Minimum Required to be Well Amount Ratio Amount Ratio(1) Amount Ratio CET1 Capital (to Risk-Weighted Assets) (2) Consolidated $ 303,860 11.00 % $ 124,339 4.5 % N/A N/A First Federal $ 322,520 11.68 % $ 124,225 4.5 % $ 179,436 6.5 % Tier 1 Capital (2) Consolidated $ 338,860 11.14 % $ 121,716 4.0 % N/A N/A First Federal $ 322,520 10.62 % $ 121,461 4.0 % $ 151,827 5.0 % Tier 1 Capital (to Risk Weighted Assets) (2) Consolidated $ 338,860 12.26 % $ 165,786 6.0 % N/A N/A First Federal $ 322,520 11.68 % $ 165,633 6.0 % $ 220,844 8.0 % Total Capital (to Risk Weighted Assets) (2) Consolidated $ 367,191 13.29 % $ 221,048 8.0 % N/A N/A First Federal $ 350,851 12.71 % $ 220,844 8.0 % $ 276,055 10.0 % (1) Excludes capital conservation buffer of 1.875% as of December 31, 2018. (2) Core capital is computed as a percentage of adjusted total assets of $3.04 billion for consolidated and for the Bank. Risk-based capital is computed as a percentage of total risk-weighted assets of $2.76 billion for consolidated and for the Bank. December 31, 2017 Actual Minimum Required for Minimum Required to be Well Amount Ratio Amount Ratio(1) Amount Ratio CET1 Capital (to Risk-Weighted Assets) (2) Consolidated $ 274,832 10.43 % $ 118,596 4.5 % N/A N/A First Federal $ 298,571 11.33 % $ 118,534 4.5 % $ 171,216 6.5 % Tier 1 Capital (2) Consolidated $ 309,832 10.80 % $ 114,773 4.0 % N/A N/A First Federal $ 298,571 10.43 % $ 114,539 4.0 % $ 143,173 5.0 % Tier 1 Capital (to Risk Weighted Assets) (2) Consolidated $ 309,832 11.76 % $ 158,128 6.0 % N/A N/A First Federal $ 298,571 11.33 % $ 158,046 6.0 % $ 210,728 8.0 % Total Capital (to Risk Weighted Assets) (2) Consolidated $ 336,515 12.77 % $ 210,838 8.0 % N/A N/A First Federal $ 325,254 12,.35 % $ 210,728 8.0 % $ 263,410 10.0 % (1) Excludes capital conservation buffer of 1.25% as of December 31, 2017. (2) Core capital is computed as a percentage of adjusted total assets of $2.87 billion for consolidated and $2.86 billion for the Bank. Risk-based capital is computed as a percentage of total risk-weighted assets of $2.64 billion for consolidated and $2.63 billion for the Bank. Dividend Restrictions - Dividends paid by First Federal to First Defiance are subject to various regulatory restrictions. First Federal paid $22.0 million in dividends to First Defiance in 2018 and $13.0 million in 2017. First Federal may not pay dividends to First Defiance in excess of its net profits (as defined by statute) for the last two fiscal years, plus any year to date net profits without the approval of the OCC. First Insurance paid $1.6 million in dividends to First Defiance in 2018 and $1.8 million in dividends in 2017. First Defiance Risk Management paid $950,000 in dividends to First Defiance in 2018 and $1.0 million in 2017.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	18. Income Taxes Income tax expense for 2017 was impacted by the adjustment of our deferred tax assets and liabilities related to the reduction in the U.S. federal statutory income tax rate to 21% under the Tax Cuts and Jobs Act, which was enacted on December 22, 2017. As a result of the new law, which is more fully discussed below, the Company recognized a net tax expense of $154,000. The components of income tax expense are as follows: Years Ended December 31, 2018 2017 2016 (In Thousands) Current: Federal $ 9,538 $ 14,588 $ 13,125 State and local 207 181 244 Deferred 881 1,261 (615 ) Tax reform revaluation - 154 - $ 10,626 $ 16,184 $ 12,754 The effective tax rates differ from federal statutory rate applied to income before income taxes due to the following: Years Ended December 31, 2018 2017 2016 (In Thousands) Tax expense at statutory rate (21%-2018 35%-2017 and 2016) $ 11,944 $ 16,958 $ 14,559 Increases (decreases) in taxes from: State income tax – net of federal tax benefit 164 119 159 Tax exempt interest income, net of TEFRA (770 ) (1,218 ) (1,168 ) Bank owned life insurance (255 ) (1,212 ) (341 ) Captive insurance (325 ) (364 ) (414 ) BOLI surrender - 1,721 - Tax reform revaluation - 154 - Other (132 ) 26 (41 ) Totals $ 10,626 $ 16,184 $ 12,754 Deferred federal income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of First Defiance’s deferred federal income tax assets and liabilities are as follows: December 31, 2018 2017 (In Thousands) Deferred federal income tax assets: Allowance for loan losses $ 5,802 $ 5,415 Postretirement benefit costs 473 671 Deferred compensation 1,011 1,354 Impaired loans 1,154 1,432 Accrued vacation 11 123 Allowance for real estate held for sale losses 62 71 Deferred loan origination fees and costs 435 332 Accrued bonus 638 333 Net unrealized gains on available-for-sale securities 547 - Other 1,273 1,578 Total deferred federal income tax assets 11,406 11,309 Deferred federal income tax liabilities: FHLB stock dividends 1,558 1,558 Goodwill 4,584 4,377 Mortgage servicing rights 2,125 2,060 Fixed assets 2,046 1,039 Other intangible assets 778 990 Loan mark to market 7 5 Net unrealized gains on available-for-sale securities - 194 Prepaid expenses 550 539 Other 22 316 Total deferred federal income tax liabilities 11,670 11,078 Net deferred federal income tax asset/ (liability) $ (264 ) $ 231 The realization of the Company’s deferred tax assets is dependent upon the Company’s ability to generate taxable income in future periods and the reversal of deferred tax liabilities during the same period. The Company has evaluated the available evidence supporting the realization of its deferred tax assets and determined it is more likely than not that the assets will be realized and thus no valuation allowance was required at December 31, 2018. Retained earnings at December 31, 2018, include approximately $11.0 million for which no tax provision for federal income taxes has been made. This amount represents the tax bad debt reserve at December 31, 1987, which is the end of the Company’s base year for purposes of calculating the bad debt deduction for tax purposes. If this portion of retained earnings is used in the future for any purpose other than to absorb bad debts, the amount used will be added to future taxable income. The unrecorded deferred tax liability on the above amount at December 31, 2018, was approximately $2.31 million. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (In Thousands): Balance at January 1, 2016 $ - Additions based on tax positions related to the current year - Additions for tax positions of prior years 398 Reductions for tax positions of prior years - Reductions due to the statute of limitations - Settlements - Balance at December 31, 2016 $ 398 Balance at January 1, 2017 $ 398 Additions based on tax positions related to the current year - Additions for tax positions of prior years - Reductions for tax positions of prior years - Reductions due to the statute of limitations - Settlements (398 ) Balance at December 31, 2017 $ - Balance at January 1, 2018 $ - Additions based on tax positions related to the current year - Additions for tax positions of prior years - Reductions for tax positions of prior years - Reductions due to the statute of limitations - Settlements - Balance at December 31, 2018 $ - The Company does not expect the total amount of unrecognized tax benefits to significantly increase in the next twelve months. The total amount of interest and penalties recorded in the income statement was $0, $0 and $40,000 for the years ended December 31, 2018, 2017 and 2016. The amount accrued for interest and penalties was $0, $0 and $40,000 at December 31, 2018, 2017 and 2016. The Company and its subsidiaries are subject to U.S. federal income tax as well as income tax in the state of Indiana. The Company is no longer subject to examination by taxing authorities for years before 2014. The Company currently operates primarily in the states of Ohio and Michigan, which tax financial institutions based on their equity rather than their income. Tax Cuts and Jobs Act – As stated above, as a result of the enactment of the Tax Cuts and Jobs Act on December 22, 2017, First Defiance re-measured its deferred tax assets and liabilities based upon the newly enacted U.S. statutory federal income tax rate of 21%, which is the tax rate at which these assets and liabilities are expected to reverse in the future. First Defiance recognized a net tax expense related to the re-measurement of its deferred tax assets and liabilities totaling $154,000 as of December 31, 2017.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Compensation and Employee Benefit Plans [Text Block]	19. Employee Benefit Plans 401(k) Plan Employees of First Defiance are eligible to participate in the First Defiance Financial Corp. 401(k) Employee Savings Plan (the “First Defiance 401(k)”) if they meet certain age and service requirements. Under the First Defiance 401(k), First Defiance matches 100% of the participants’ contributions up to 3% of compensation and then 50% of the participants’ contributions for the next 2% of compensation. The First Defiance 401(k) also provides for a discretionary First Defiance contribution in addition to the First Defiance matching contribution. First Defiance matching contributions totaled $1.31 million, $1.19 million and $979,000 for the years ended December 31, 2018, 2017 and 2016, respectively. There were no discretionary contributions in any of those years. Group Life Plan On June 30, 2010, First Federal adopted the First Federal Bank of the Midwest Executive Group Life Plan – Post Separation (the “Group Life Plan”) in which various employees, including the Company’s named executive officers, may participate. Under the terms of the Group Life Plan, First Federal will purchase and own life insurance policies covering the lives of employees selected by the board of directors of First Federal as participants. There was $38,000, $248,000 and $71,000 of expense recorded for the years ended December 31, 2018, 2017 and 2016, respectively, with a liability of $1.71 million and $1.69 million for future benefits recorded at December 31, 2018 and 2017, respectively. The acquisition of CSB added $402,000 to this liability in 2017. The discount rate was reduced to 4.00% as of December 31, 2016, resulting in an increase to the Company’s liability, and remained unchanged at December 31, 2018. Deferred Compensation The deferred compensation plan covers all directors and certain employees that elect to participate. Under the plan, the Company pays each participant, or their beneficiary, the amount of fees deferred plus interest over a defined time period. In the fourth quarter of 2018, the stock market declined significantly resulting in a significant decline in the value of the assets and liabilities of the deferred compensation plan and an accounting correction in the deferred compensation plan was recognized. The deferred compensation plan has approximately $5.0 million in assets and liabilities as of December 31, 2018, which are matched in terms of investment elections. Every year, other noninterest income and other noninterest expense reflects the changes in fair value of the underlying investments in the assets and liabilities, respectively. The Company made an accounting correction, which is expected to minimize any net impact to earnings from the deferred compensation plan going forward. This accounting correction was deemed immaterial which resulted in a one-time reduction to other noninterest expense of $806,000, including a $636,000 adjustment to equity for the phantom stock elections within the plan, and a $170,000 adjustment for the tax liability, as of December 31, 2018. The phantom shares are carried at cost in equity and will be treated as outstanding shares for earnings per share calculations.

Stock Compensation Plans

Stock Compensation Plans	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	20. Stock Compensation Plans First Defiance has established equity based compensation plans for its directors and employees. On February 27, 2018, the Board adopted, and the shareholders approved at the 2018 Annual Shareholders Meeting, the First Defiance Financial Corp. 2018 Equity Incentive Plan (the “2018 Equity Plan”). The 2018 Equity Plan replaced all existing plans, although the Company’s former equity plans remain in existence to the extent there were outstanding grants thereunder at the time the 2018 Equity Plan was approved. All awards currently outstanding under prior plans will remain in effect in accordance with their respective terms. Any new awards will be made under the 2018 Equity Plan. The 2018 Equity Plan allows for issuance of up to 900,000 common shares through the award of options, stock grants, restricted stock units (“RSU”), stock appreciation rights or other stock-based awards. As of December 31, 2018, 39,400 options had been granted pursuant to previous plans, and remain outstanding at option prices based on the market value of the underlying shares on the date the options were granted. Options granted under all plans vest 20% per year. All options expire ten years from the date of grant. Vested options of retirees expire on the earlier of the scheduled expiration date or three months after the retirement date. The Company approved a Short-Term (“STIP”) Incentive Plan and a Long-Term (“LTIP”) Equity Incentive Plan for selected members of management. Under the 2017 and 2018 STIPs, the participants could earn up to 10% to 45% of their salary for potential payout based on the achievement of certain corporate performance targets during the calendar year. The final amount of benefits under the STIPs is determined as of December 31 of the same year and paid out in cash in the first quarter of the following year. The participants are required to be employed on the day of payout in order to receive such payment. Under each LTIP, the participants may earn between 20% to 45% of their salary for potential payout in the form of equity awards based on the achievement of certain corporate performance targets over a three-year period. The Company granted 49,052, 41,314 and 41,676 RSU’s to the participants in the 2016, 2017 and 2018 LTIPs, respectively, effective January 1 in the year the award was made, which represents the maximum target award. The amount of benefit under each LTIP will be determined individually at the end of the 36 month performance period ending December 31. The benefits earned under each LTIP will be paid out in equity in the first quarter following the end of the performance period. The participants are required to be employed on the day of payout in order to receive the payment. A total of 49,514 RSU’s were issued to the participants of the 2015 LTIP in the first quarter of 2018 for the three year performance period ended December 31, 2017. In 2018, the Company also granted to employees 23,952 restricted shares, of which 7,348 were RSUs and 16,604 were restricted stock grants. Of the 16,604 restricted stock grants, 4,104 were issued to directors and have a one-year vesting period. The remaining 12,500 were issued to employees and have a three year vesting period. The fair value of all granted restricted shares was determined by the stock price at the date of the grant. The fair value of each option award is estimated on the date of grant using the Black-Scholes model. Expected volatilities are based on historical volatilities of the Company’s common shares. The Company uses historical data to estimate option exercise and post-vesting termination behavior. The expected term of options granted is based on historical data and represents the period of time that options granted are expected to be outstanding, which takes into account that the options are not transferable. The risk-free interest rate for the expected term of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. There were no options granted during the twelve months ended December 31, 2018, or December 31, 2017. Following is activity under the plans during 2018: Options Weighted Weighted Aggregate Options outstanding, January 1, 2018 86,900 $ 10.81 Forfeited or cancelled - - Exercised (47,500 ) 8.15 Granted - - Options outstanding, December 31, 2018 39,400 $ 14.00 4.96 $ 414 Vested or expected to vest at December 31, 2018 39,400 $ 14.00 4.96 $ 414 Exercisable at December 31, 2018 23,900 $ 12.21 4.14 $ 294 Information related to the stock option plans is as follows: Year Ended December 31, 2018 2017 2016 (In Thousands, except per share amounts) Intrinsic value of options exercised $ 893 $ 301 $ 752 Cash received from option exercises 111 198 714 Tax benefit realized from option exercises 28 54 165 Weighted average fair value of options granted $ - $ - $ 13.95 As of December 31, 2018, there was $50,000 of total unrecognized compensation costs related to unvested stock options granted under the Company’s equity plans. The cost is expected to be recognized over a weighted-average period of 1.6 years . At December 31, 2018, 174,958 restricted share awards were outstanding. Compensation expense is recognized over the performance period based on the achievement of established targets. Total expense of $ 2.0 million, 2.0 million and $ 1.3 million was recorded during the years ended December 31, 2018, 2017 and 2016, respectively, and approximately $ 961,000 and $ 774,000 is included within other liabilities at December 31, 2018 and 2017, respectively, related to the STIPs and LTIPs. Restricted Stock Units Stock Grants Weighted-Average Weighted-Average Grant Date Grant Date Unvested Shares Shares Fair Value Shares Fair Value Unvested at January 1, 2018 145,076 $ 20.26 21,072 $ 25.28 Granted 49,024 26.97 66,118 19.68 Vested (49,514 ) 16.15 (56,818 ) 17.51 Forfeited - - - - Unvested at December 31, 2018 144,586 $ 23.94 30,372 $ 28.48 The maximum amount of compensation expense that may be earned for the 2018 STIP and the 2016, 2017 and 2018 LTIPs at December 31, 2018, is approximately $ 4.3 million in the aggregate. However, the estimated expense expected to be earned as of December 31, 2018, based on the performance measures in the plans, is $ 3.7 million of which $ 899,000 was unrecognized at December 31, 2018, and will be recognized over the remaining performance period. As of December 31 , 2018 , 895,500

Parent Company Statements

Parent Company Statements	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Information of Parent Company Only Disclosure [Text Block]	21. Parent Company Statements Condensed parent company financial statements, which include transactions with subsidiaries, are as follow: December 31, Statements of Financial Condition 2018 2017 (In Thousands) Assets Cash and cash equivalents $ 12,153 $ 8,860 Investment in banking subsidiary 398,922 377,546 Investment in non-bank subsidiaries 23,372 22,319 Other assets 1,723 1,157 Total assets $ 436,170 $ 409,882 Liabilities and stockholders’ equity: Subordinated debentures $ 36,083 $ 36,083 Accrued liabilities 498 513 Stockholders’ equity 399,589 373,286 Total liabilities and stockholders’ equity $ 436,170 $ 409,882 Years Ended December 31, Statements of Income 2018 2017 2016 (In Thousands) Dividends from subsidiaries $ 24,550 $ 15,800 $ 24,200 Interest expense (1,281 ) (1,090 ) (753 ) Other income 1 1 - Noninterest expense (831 ) (697 ) (644 ) Income before income taxes and equity in earnings of subsidiaries 22,439 14,014 22,803 Income tax credit (431 ) (605 ) (466 ) Income before equity in earnings of subsidiaries 22,870 14,619 23,269 Undistributed equity in earnings of subsidiaries 23,379 17,649 5,574 Net income 46,249 32,268 28,843 Other comprehensive income (loss) (2,412 ) 2 (3,407 ) Comprehensive income $ 43,837 $ 32,270 $ 25,436 Years Ended December 31, Statements of Cash Flows 2018 2017 2016 (In Thousands) Operating activities: Net income $ 46,249 $ 32,268 $ 28,843 Adjustments to reconcile net income to net cash (used in) provided by operating activities: Undistributed equity in earnings of subsidiaries (23,379 ) (17,649 ) (5,574 ) Change in other assets and liabilities (419 ) (358 ) 235 Net cash provided by (used in) operating activities 22,451 14,261 23,504 Investing activities: Cash paid for Commercial Bancshares - (12,340 ) - Capital contribution to subsidiary - (6,491 ) - Net cash used in investing activities - (18,831 ) - Financing activities: Repurchase of common stock (6,330 ) - (6,293 ) Cash dividends paid (13,043 ) (9,859 ) (7,890 ) Stock Options Exercised 111 199 714 Direct stock sales 104 73 66 Net cash used in financing activities (19,158 ) (9,587 ) (13,406 ) Net increase (decrease) in cash and cash equivalents 3,293 (14,157 ) 10,098 Cash and cash equivalents at beginning of year 8,860 23,017 12,919 Cash and cash equivalents at end of year $ 12,153 $ 8,860 $ 23,017

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value, Measurement Inputs, Disclosure [Text Block]	22. Fair Value FASB ASC Topic 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. The price in the principal (or most advantageous) market used to measure the fair value of the asset or liability shall not be adjusted for transaction costs. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets and liabilities; it is not a forced transaction. Market participants are buyers and sellers in the principal market that are (i) independent, (ii) knowledgeable, (iii) able to transact and (iv) willing to transact. FASB ASC Topic 820 requires the use of valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. The income approach uses valuation techniques to convert future amounts, such as cash flows or earnings, to a single present amount on a discounted basis. The cost approach is based on the amount that currently would be required to replace the service capacity of an asset (replacement cost). Valuation techniques should be consistently applied. Inputs to valuation techniques refer to the assumptions that market participants would use in pricing the asset or liability. Inputs may be observable, meaning those that reflect the assumptions market participants would use in pricing the asset or liability developed based on the best information available. In that regard, FASB ASC Topic 820 established a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows: · Level 1 · Level 2 · Level 3 A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. Available for sale securities Impaired loans - Fair values for impaired collateral dependent loans are generally based on appraisals obtained from licensed real estate appraisers and in certain circumstances consideration of offers obtained to purchase properties prior to foreclosure. Appraisals for commercial real estate generally use three methods to derive value: cost, sales or market comparison and income approach. The cost method bases value on the cost to replace the current property. Value of market comparison approach evaluates the sales price of similar properties in the same market area. The income approach considers net operating income generated by the property and an investors required return. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Comparable sales adjustments are based on known sales prices of similar type and similar use properties and duration of time that the property has been on the market to sell. Such adjustments made in the appraisal process are typically significant and result in a Level 3 classification of the inputs for determining fair value. Real Estate held for sale - Assets acquired through or instead of loan foreclosure are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. These assets are then reviewed monthly by members of the asset review committee for valuation changes and are accounted for at lower of cost or fair value less estimated costs to sell. Fair value is commonly based on recent real estate appraisals which may utilize a single valuation approach or a combination of approaches including cost, comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Such adjustments may be significant and typically result in a Level 3 classification of the inputs for determining fair value. Appraisals for both collateral-dependent impaired loans and other real estate owned are performed by certified general appraisers (for commercial properties) or certified residential appraisers (for residential properties) whose qualifications and licenses have been reviewed and verified by the Company. Once received, a member of the Company’s asset quality or collections department reviews the assumptions and approaches utilized in the appraisal. Appraisal values are discounted from 0% to 20% to account for other factors that may impact the value of collateral. In determining the value of impaired collateral dependent loans and other real estate owned, significant unobservable inputs may be used, which include: physical condition of comparable properties sold, net operating income generated by the property and investor rates of return. Mortgage servicing rights Mortgage banking derivative The following table summarizes the financial assets measured at fair value on a recurring basis segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Assets and Liabilities Measured on a Recurring Basis December 31, 2018 Level 1 Level 2 Level 3 Total Fair (In Thousands) Available for sale securities: Obligations of U.S. Government corporations and agencies $ - $ 2,503 $ - $ 2,503 Mortgage-backed - residential - 74,710 - 74,710 REMICs - 2,709 - 2,709 Collateralized mortgage obligations - 101,461 - 101,461 Preferred stock - - - - Corporate bonds - 12,806 - 12,806 Obligations of state and political subdivisions - 99,887 99,887 Mortgage banking derivative - asset - 367 - 367 Mortgage banking derivative -liability - 73 - 73 December 31, 2017 Level 1 Level 2 Level 3 Total Fair (In Thousands) Available for sale securities: Obligations of U.S. Government corporations and agencies $ - $ 508 $ - $ 508 Mortgage-backed - residential - 59,269 - 59,269 REMICs - 1,065 - 1,065 Collateralized mortgage obligations - 93,876 - 93,876 Preferred stock 1 - - 1 Corporate bonds - 13,103 - 13,103 Obligations of state and political subdivisions - 92,828 92,828 Mortgage banking derivative - asset - 609 - 609 Mortgage banking derivative -liability - 11 - 11 There were no assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31, 2018 and 2017. The following table summarizes the financial assets measured at fair value on a non-recurring basis segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Assets and Liabilities Measured on a Non-Recurring Basis December 31, 2018 Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair (In Thousands) Impaired loans Commercial Real Estate $ - $ - $ 1,456 $ 1,456 Commercial 319 319 Total impaired loans - - 1,775 1,775 Mortgage servicing rights - 629 - 629 Real estate held for sale CRE - - 705 705 Total Real Estate held for sale - - 705 705 December 31, 2017 Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair (In Thousands) Impaired loans Commercial Real Estate $ - $ - $ 1,787 $ 1,787 Commercial 2,817 2,817 Total impaired loans - - 4,604 4,604 Mortgage servicing rights - 534 - 534 Real estate held for sale CRE - - 227 227 Total Real Estate held for sale - - 227 227 For Level 3 assets and liabilities measured at fair value on a recurring or nonrecurring basis as of December 31, 2018, the significant unobservable inputs used in the fair value measurements were as follows: Fair Value Valuation Technique Unobservable Inputs Range of Weighted (Dollars in Thousands) Impaired Loans- Applies to all loan classes $ 1,775 Appraisals which utilize sales comparison, net income and cost approach Discounts for collection issues and changes in market conditions 10-13 % 10.86 % Real estate held for sale – Applies to all classes $ 705 Appraisals which utilize sales comparison, net income and cost approach Discounts for changes in market conditions 20 % 20 % For Level 3 assets and liabilities measured at fair value on a recurring or nonrecurring basis as of December 31, 2017, the significant unobservable inputs used in the fair value measurements were as follows: Fair Value Valuation Technique Unobservable Inputs Range of Weighted (Dollars in Thousands) Impaired Loans- Applies to all loan classes $ 4,604 Appraisals which utilize sales comparison, net income and cost approach Discounts for collection issues and changes in market conditions 10-20 % 11 % Real estate held for sale – Applies to all classes $ 227 Appraisals which utilize sales comparison, net income and cost approach Discounts for changes in market conditions 0 % 0 % Impaired loans, which are measured for impairment using the fair value of the collateral for collateral dependent loans, had a fair value of $1.8 million, with a valuation allowance of $9,000 and a fair value of $4.6 million with no valuation allowance at December 31, 2018 and 2017, respectively. A provision expense of $1.2 million, $993,000, $1.0 million for the years ended December 31, 2018, 2017 and 2016, respectively, related to these impaired loans was included in earnings. Mortgage servicing rights, which are carried at the lower of cost or fair value, had a fair value of $629,000 with a valuation allowance of $300,000 and a fair value of $534,000 with a valuation allowance of $432,000 at December 31, 2018 and 2017, respectively. A recovery of $132,000, $90,000 and $123,000 for the years ended December 31, 2018, 2017 and 2016, respectively, was included in earnings. Real estate held for sale is determined using Level 3 inputs which include appraisals and are adjusted for changes in market conditions. The change in fair value of real estate held for sale was $552,000, $20,000 and $74,000 for the years ended December 31, 2018, 2017 and 2016, respectively, which was recorded directly as an adjustment to current earnings through noninterest expense. In accordance with FASB ASC Topic 825, the Fair Value Measurements tables are a comparative condensed consolidated statement of financial condition based on carrying amount and estimated fair values of financial instruments as of December 31, 2018, and December 31, 2017. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of First Defiance. Much of the information used to arrive at “fair value” is highly subjective and judgmental in nature and therefore the results may not be precise. Subjective factors include, among other things, estimated cash flows, risk characteristics and interest rates, all of which are subject to change. With the exception of investment securities, the Company’s financial instruments are not readily marketable and market prices do not exist. Since negotiated prices for the instruments, which are not readily marketable, depend greatly on the motivation of the buyer and seller, the amounts that will actually be realized or paid per settlement or maturity of these instruments could be significantly different. The carrying amount of cash and cash equivalents, term notes payable and advance payments by borrowers for taxes and insurance, as a result of their short-term nature, is considered to be equal to fair value and are classified as Level 1. It was not practicable to determine the fair value of FHLB stock due to restrictions placed on its transferability. The Company adopted the amendments to ASU 2016-01 relating to the loan portfolio in 2018 and an exit price income approach is now used to determine the fair value. The loans were valued on an individual basis, with consideration given to the loans underlying characteristics, including account types, remaining terms (in months), annual interest rates or coupons, interest types, past delinquencies, timing of principal and interest payments, current market rates, loss exposures, and remaining balances. The model utilizes a discounted cash flow approach to estimate the fair value of the loans using assumptions for the coupon rates, remaining maturities, prepayment speeds, projected default probabilities, losses given defaults, and estimates of prevailing discount rates. The discounted cash flow approach models the credit losses directly in the projected cash flows. The model applies various assumptions regarding credit, interest, and prepayment risks for the loans based on loan types, payment types and fixed or variable classifications. As of December 31, 2017, the fair value was estimated by discounting the future cash flows using the rates at which similar notes would be written for the same remaining maturities or an entry price income approach. The market rates used were based on current rates the Company would impose for similar loans and reflect a market participant assumption about risks associated with non-performance, illiquidity, and the structure and term of the loans along with local economic and market conditions. For all periods presented, the estimated fair value of impaired loans is based on the fair value of the collateral, less estimated cost to sell, or the present value of the loan’s expected future cash flows (discounted at the loan’s effective interest rate). All impaired loans are classified as Level 3 within the valuation hierarchy. The fair value of accrued interest receivable is equal to the carrying amounts resulting in a Level 2 or Level 3 classification, which is consistent with its underlying asset. The fair value of noninterest-bearing deposits are considered equal to the amount payable on demand at the reporting date (i.e., carrying value) and are classified as Level 1. The fair value of savings, NOW and certain money market accounts are equal to their carrying amounts and are a Level 2 classification. Fair values of fixed rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits resulting in a Level 2 classification. The fair values of securities sold under repurchase agreements are equal to their carrying amounts resulting in a Level 2 classification. The carrying value of subordinated debentures and deposits with fixed maturities is estimated based on discounted cash flow analyses based on interest rates currently being offered on instruments with similar characteristics and maturities resulting in a Level 3 classification. FHLB advances with maturities greater than 90 days are valued based on discounted cash flow analysis, using interest rates currently being quoted for similar characteristics and maturities resulting in a Level 2 classification. The cost or value of any call or put options is based on the estimated cost to settle the option at December 31, 2018. Fair Value Measurements at December 31, 2018 Carrying Value Total Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents $ 98,962 $ 98,962 $ 98,962 $ - $ - Investment securities 294,602 294,602 - 294,602 - FHLB Stock 14,217 N/A N/A N/A N/A Loans, net, including loans 2,518,321 2,501,096 - 6,865 2,494,231 Accrued interest receivable 9,641 9,641 18 1,168 8,455 Financial Liabilities: Deposits $ 2,620,882 $ 2,613,965 $ 607,198 $ 2,006,767 $ - Advances from FHLB 85,189 84,281 - 84,281 - Securities sold under repurchase agreements 5,741 5,741 - 5,741 - Subordinated debentures 36,083 28,854 - - 28,854 Fair Value Measurements at December 31, 2017 Carrying Total Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents $ 113,693 $ 113,693 $ 113,693 $ - $ - Investment securities 261,298 261,299 1 261,298 - FHLB Stock 15,992 N/A N/A N/A N/A Loans, net, including loans 2,332,465 2,315,791 - 10,830 2,304,961 Accrued interest receivable 8,706 8,706 13 917 7,776 Financial Liabilities: Deposits $ 2,437,656 $ 2,444,683 $ 571,360 $ 1,873,323 $ - Advances from FHLB 84,279 83,261 - 83,261 - Securities sold under repurchase agreements 26,019 26,019 - 26,019 - Subordinated debentures 36,083 35,385 - - 35,385

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	23. Derivative Financial Instruments Commitments to fund certain mortgage loans (interest rate locks) to be sold into the secondary market and forward commitments for the future delivery of mortgage loans to third-party investors are considered derivatives. It is the Company’s practice to enter into forward commitments for the future delivery of residential mortgage loans when interest rate lock commitments are entered into in order to economically hedge the effect of changes in interest rates resulting from its commitments to fund the loans. These mortgage banking derivatives are not designated in hedge relationships. First Federal had approximately $8.6 million and $14.8 million of interest rate lock commitments at December 31, 2018 and 2017, respectively. There were $11.5 million and $23.2 million of forward commitments for the future delivery of residential mortgage loans at December 31, 2018 and 2017, respectively. The fair value of these mortgage banking derivatives are reflected by a derivative asset or a derivative liability. The table below provides data about the carrying values of these derivative instruments December 31, 2018 December 31, 2017 Assets (Liabilities) Assets (Liabilities) Derivative Derivative Carrying Carrying Net Carrying Carrying Carrying Net Carrying Value Value Value Value Value Value (In Thousands) Derivatives not designated as hedging instruments Mortgage Banking Derivatives $ 367 $ 73 $ 294 $ 609 $ 11 $ 598 The table below provides data about the amount of gains and losses recognized in income on derivative instruments not designated as hedging instruments: Twelve Months Ended December 31, 2018 2017 2016 (In Thousands) Derivatives not designated as hedging instruments Mortgage Banking Derivatives – Gain (Loss) $ (304 ) $ 107 $ (67 )

Quarterly Consolidated Results

Quarterly Consolidated Results of Operations	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Text Block]	24. Quarterly Consolidated 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 (In Thousands, Except Per Share Amounts) 2018 Interest income $ 28,905 $ 30,299 $ 31,963 $ 33,550 Interest expense 3,218 3,752 4,434 5,058 Net interest income 25,687 26,547 27,529 28,492 Provision for loan losses (1,095 ) 423 1,376 472 Net interest income after provision for loan losses 26,782 26,124 26,153 28,020 Gain on sale, call or write-down of securities - - 76 97 Noninterest income 10,703 10,214 9,846 8,272 Noninterest expense 23,251 22,665 22,286 21,210 Income before income taxes 14,234 13,673 13,789 15,179 Income taxes 2,497 2,564 2,483 3,082 Net income $ 11,737 $ 11,109 $ 11,306 $ 12,097 Earnings per common share: Basic $ 0.58 $ 0.54 $ 0.55 $ 0.60 Diluted $ 0.58 $ 0.54 $ 0.55 $ 0.59 Average shares outstanding: Basic 20,330 20,388 20,400 20,313 Diluted 20,438 20,492 20,467 20,404 Three Months Ended March 31 June 30 September 30 December 31 (In Thousands, Except Per Share Amounts) 2017 Interest income $ 24,036 $ 27,458 $ 28,081 $ 28,527 Interest expense 2,391 2,826 3,074 3,140 Net interest income 21,645 24,632 25,007 25,387 Provision for loan losses 55 2,118 462 314 Net interest income after provision for loan losses 21,590 22,514 24,545 25,073 Gain on sale, call or write-down of securities - 267 158 159 Noninterest income 10,549 9,873 9,337 9,738 Noninterest expense 23,142 20,630 20,440 21,139 Income before income taxes 8,997 12,024 13,600 13,831 Income taxes 3,857 3,677 4,219 4,431 Net income $ 5,140 $ 8,347 $ 9,381 $ 9,400 Earnings per common share: Basic $ 0.27 $ 0.41 $ 0.46 $ 0.47 Diluted $ 0.27 $ 0.41 $ 0.46 $ 0.46 Average shares outstanding: Basic 18,870 20,294 20,298 20,310 Diluted 18,980 20,408 20,418 20,444

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2018
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income Loss [Text Block]	25. Other Comprehensive Income (Loss) The before and after tax amounts allocated to each component of other comprehensive income (loss) are presented in the table below. Reclassification adjustments related to securities available for sale are included in gains on sale or call of securities in the accompanying consolidated condensed statements of income. Reclassification adjustments related to the defined benefit postretirement medical plan are included in compensation and benefits in the accompanying consolidated condensed statements of income. Before Tax Tax Effect Net of Tax (In Thousands) Twelve months ended December 31, 2018: Securities available for sale and transferred securities: Change in net unrealized gain/(loss) during the period $ (3,356 ) $ (706 ) $ (2,650 ) Reclassification adjustment for net gains included in net income (173 ) (36 ) (137 ) Defined benefit postretirement medical plan: Net gain on defined benefit postretirement medical plan realized during the period 560 200 360 Reclassification adjustment for net amortization and deferral on defined benefit postretirement medical plan (included in compensation and benefits) 18 3 15 Total other comprehensive income $ (2,951 ) $ (539 ) $ (2,412 ) Before Tax Tax Effect Net of Tax (In Thousands) Twelve months ended December 31, 2017: Securities available for sale and transferred securities: Change in net unrealized gain/(loss) during the period $ 733 $ 256 $ 477 Reclassification adjustment for net gains included in net income (584 ) (204 ) (380 ) Defined benefit postretirement medical plan: Net gain on defined benefit postretirement medical plan realized during the period (166 ) (59 ) (107 ) Reclassification adjustment for net amortization and deferral on defined benefit postretirement medical plan (included in compensation and benefits) 19 7 12 Total other comprehensive income $ 2 $ - $ 2 Activity in accumulated other comprehensive income (loss), net of tax, was as follows: Accumulated Securities Post- Other Available retirement Comprehensive For Sale Benefit Income (In Thousands) Balance January 1, 2018 $ 601 $ (384 ) $ 217 Other comprehensive income before reclassifications (2,651 ) 360 (2,291 ) Amounts reclassified from accumulated other comprehensive loss (136 ) 15 (121 ) Net other comprehensive income during period (2,787 ) 375 (2,412 ) Reclassification adjustment upon adoption of ASU 2018-02 129 (82 ) 47 Balance December 31, 2018 $ (2,057 ) $ (91 ) $ (2,148 ) Balance January 1, 2017 $ 504 $ (289 ) $ 215 Other comprehensive income before reclassifications 477 (108 ) 369 Amounts reclassified from accumulated other comprehensive loss (380 ) 13 (367 ) Net other comprehensive income during period 97 (95 ) 2 Balance December 31, 2017 $ 601 $ (384 ) $ 217

Statement of Accounting Polic_2

Statement of Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ.
Earnings Per Share, Policy [Policy Text Block]	Earnings Per Common Share Basic earnings per common share is computed by dividing net income applicable to common shares (net income less dividend requirements for preferred stock, accretion of preferred stock discount and redemption of preferred stock) by the weighted average number of shares of common stock outstanding during the period. All outstanding unvested share-based payment awards that contain rights to nonforfeitable dividends are considered participating securities for the calculation. Diluted earnings per common share includes the dilutive effect of additional potential common shares issuable under stock options, warrants, restricted stock awards and stock grants. See also Note 4.
Comprehensive Income, Policy [Policy Text Block]	Comprehensive Income Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on available-for-sale securities and the net unrecognized actuarial losses and unrecognized prior service costs associated with the Company’s Defined Benefit Postretirement Medical Plan. All items included in other comprehensive income are reported net of tax. See also Notes 5, 16 and 25 and the Consolidated Statements of Comprehensive Income.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash Flows Cash and cash equivalents include amounts due from banks and overnight investments with the Federal Home Loan Bank (“FHLB”) and the Federal Reserve. Cash and amounts due from depository institutions include required balances on hand or on deposit at the FHLB and Federal Reserve of approximately $1,723,000 and $1,048,000, respectively, at December 31, 2018, to meet regulatory reserve and clearing requirements. Net cash flows are reported for customer loan and deposit transactions, interest-bearing deposits in other financial institutions and repurchase agreements.
Investment, Policy [Policy Text Block]	Investment Securities Securities are classified as held-to-maturity when First Defiance has the positive intent and ability to hold the securities to maturity and are reported at amortized cost, adjusted for premiums and discounts that are recognized in interest income using the interest method over the period to maturity. Securities available-for-sale consists of those securities which might be sold prior to maturity due to changes in interest rates, prepayment risks, yield and availability of alternative investments, liquidity needs or other factors. Available-for-sale securities are stated at fair value, with the unrealized gains and losses, net of tax, reported in other comprehensive income (loss) until realized. Realized gains and losses are included in gains (losses) on securities or other-than-temporary impairment losses on securities. Realized gains and losses on securities sold are recognized on the trade date based on the specific identification method. Interest income includes amortization of purchase premiums and discounts. Premiums and discounts are amortized on the level-yield method without anticipating prepayments, except for mortgage-backed securities where prepayments are expected. Securities with unrealized losses are reviewed quarterly to determine if value impairment is other–than-temporary. In performing this review management considers the length of time and extent that fair value has been less than cost, the financial condition of the issuer, the impact of changes in market interest rates on market value and whether the Company intends to sell or it would be more than likely required to sell the securities prior to their anticipated recovery. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components as follows: (1) other-than-temporary impairment (“OTTI”) related to credit loss, which must be recognized in the income statement and (2) OTTI related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. For equity securities, the entire amount of impairment is recognized through earnings.
Stock In Federal Home Loan Bank [Policy Text Block]	FHLB Stock First Federal is a member of the FHLB system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. FHLB stock is carried at cost, classified as a restricted security, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income. At December 31, 2018, the Company held $14.2 million at the FHLB of Cincinnati and $2,500 at the FHLB of Indianapolis.
Policy Loans Receivable, Policy [Policy Text Block]	Loans Receivable Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal amount outstanding, net of deferred loan fees and costs, purchase premiums and discounts and the allowance for loan losses. Deferred fees net of deferred incremental loan origination costs, are amortized to interest income generally over the contractual life of the loan using the interest method without anticipating prepayments. The recorded investment in loans includes accrued interest receivable, unamortized premiums and discounts, and net deferred fees and costs and undisbursed loan amounts. Mortgage loans originated and intended for sale in the secondary market are classified as loans held for sale and are carried at the lower of aggregate cost or fair value, as determined by outstanding commitments from investors. Net unrealized losses, if any, are recorded as a valuation allowance and charged to earnings. Mortgage loans held for sale are generally sold with servicing rights retained. The carrying value of mortgage loans sold is reduced by the amount allocated to the servicing right. Gains or losses on sales of mortgage loans are based on the difference between the selling price and the carrying value of the related loan sold. The Company may incur losses pertaining to loans sold to Fannie Mae and Freddie Mac but repurchased due to underwriting issues. Repurchase losses are recognized when the Company determines they are probable and estimable. Interest receivable is accrued on loans and credited to income as earned. The accrual of interest on loans 90 days delinquent or those loans considered impaired is discontinued when, in management’s opinion, the borrower may be unable to meet payments as they become due. For these loans, interest accrual is only to the extent cash payments are received. The accrual of interest on these loans is generally resumed after a pattern of repayment has been established and the collection of principal and interest is reasonably assured.
Certain Loans and Debt Securities Acquired in Transfer, Recognizing Interest Income on Impaired Loans, Policy [Policy Text Block]	Purchased Credit Impaired Loans The Company acquires loans individually and in groups or portfolios. At acquisition, the Company reviews each loan to determine whether there is evidence of deterioration of credit quality since origination and if it is probable that it will be unable to collect all amounts due according to the loan’s contractual terms. If both conditions exist, the Company determines whether each such loan is to be accounted for individually or whether such loans will be assembled into pools of loans based on common risk characteristics (credit score, loan type and date of origination). The Company considers expected prepayments, and estimates the amount and timing of undiscounted expected principal, interest, and other cash flows (expected at acquisition) for each loan and subsequently aggregated pool of loans. The Company determines the excess of the loan’s or pool’s scheduled contractual principal and contractual interest payments over all cash flows expected at acquisition as an amount that should not be accreted (nonaccretable difference). The remaining amount—representing the excess of the loan’s cash flows expected to be collected over the amount paid—is accreted into interest income over the remaining life of the loan or pool (accretable yield). Over the life of the loan or pool, the Company continues to estimate cash flows expected to be collected, and evaluates whether the present value of its loans determined using the effective interest rates has decreased and, if so, recognizes a loss. Valuation allowances for all acquired loans subject to Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 310 reflect only those losses incurred after acquisition—that is, the present value of cash flows expected at acquisition that are not expected to be collected.
Loans and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]	Allowance for Loan Losses The allowance for loan losses is maintained at a level believed adequate by management to absorb probable incurred losses in the loan portfolio and is based on the size and current risk characteristics of the loan portfolio, an assessment of individual problem loans, actual loss experience, current economic events in specific industries and geographical areas and other pertinent factors, including general economic conditions. Determination of the allowance is inherently subjective as it requires significant estimates, including the amounts and timing of expected future cash flows on impaired loans, estimated losses on pools of homogeneous loans based on historical loss experience and consideration of economic trends, all of which may be susceptible to significant change. Allocations of the allowance may be made for specific loans, but the entire allowance is available for any loan that, in management’s judgment, should be charged-off. Loan losses are charged-off against the allowance when in management’s estimation it is unlikely that the loan will be collected, while recoveries of amounts previously charged-off are credited to the allowance. A provision for loan loss is charged to operations based on management’s periodic evaluation of the factors previously mentioned, as well as other pertinent factors in order to maintain the allowance for loan losses at the level deemed adequate by management. The determination of whether a loan is considered past due or delinquent is based on the contractual payment terms. Loans are considered past due when the contractual amounts due with respect to principal and interest are not received within 30 days of the contractual due date. All loans are placed on non-accrual status at 90 days past due unless the loan is adequately secured and is in process of collection. Any loan in the portfolio may be placed on non-accrual status prior to becoming 90 days past due when collection of principal or interest is in doubt. The allowance consists of specific and general components. The specific component relates to loans that are individually classified as impaired. Impaired loans have been recognized in conformity with FASB ASC Topic 310. A loan is impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loans agreement. Loans, for which terms have been modified and for which the borrower is experiencing financial difficulties, are considered troubled debt restructurings and classified as impaired. When a loan is considered impaired, an analysis of the net present value of estimated cash flows is performed and an allowance may be established based on the outcome of that analysis, or if the loan is deemed to be collateral dependent an allowance is established based on the fair value of collateral. All modifications are reviewed by the First Federal’s Chief Credit Officer or Credit Administration Officer to determine whether or not the modification constitutes a troubled debt restructure. Commercial and commercial real estate loan relationships greater than $250,000 are individually evaluated for impairment. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported net of the allowance allocation which is determined based on the present value of estimated future cash flows using the loan’s existing rate or at the fair value of collateral if repayment is expected solely from the collateral. Impaired loan relationships less than $250,000 are aggregated by loan segment and risk level and given a specific reserve based on the general reserve factor for that loan segment and risk level. Large groups of smaller balance homogeneous loans, such as consumer and residential real estate loans, are collectively evaluated for impairment, and accordingly, they are not separately identified for impairment disclosures. The following portfolio segments have been identified: Commercial Real Estate Loans (consisting of multi-family residential and non-residential) Commercial Loans Consumer Finance Loans 1-4 Family Residential Real Estate Loans Construction Loans Home Equity and Improvement Loans Consumer finance, 1-4 family residential real estate (including construction) and home equity and improvement loans are subject to adverse employment conditions in the local economy which could increase the default rate on loans.
Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy [Policy Text Block]	Servicing Rights S ervicing rights are recognized separately when they are acquired through sales of loans. Servicing rights are initially recorded at fair value with the income statement effect recorded in gains on sales of loans. Fair value is based on market prices for comparable mortgage servicing contracts, when available, or alternatively, is based on a valuation model that calculates the present value of estimated future net servicing income. 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. The Company compares the valuation model inputs and results to published industry data in order to validate the model results and assumptions. All classes of servicing assets are subsequently measured using the amortization method which requires servicing rights to be amortized into noninterest income in proportion to, and over the period of, the estimated future net servicing income of the underlying loans, driven, generally, by changes in market interest rates. Servicing assets are evaluated for impairment based upon the fair value of the rights as compared to carrying amount. Impairment is determined by stratifying rights into groupings based on predominant risk characteristics, such as interest rate, loan type and investor type. Impairment is recognized through a valuation allowance for an individual grouping, to the extent that fair value is less than the carrying amount. If the Company later determines that all or a portion of the impairment no longer exists for a particular grouping, a reduction of the allowance may be recorded as an increase to income. Changes in valuation allowances are reported with mortgage banking income on the income statement. The fair values of servicing rights are subject to significant fluctuations as a result of changes in estimated and actual prepayment speeds and default rates and losses. Servicing fee income, which is reported on the income statement with mortgage banking 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. Servicing fees totaled $3.8 million, $3.7 million and $3.6 million for the years ended December 31, 2018, 2017 and 2016. Late fees and ancillary fees related to loan servicing are not material. See Note 8.
Bank Owned Life Insurance [Policy Text Block]	Bank Owned Life Insurance The Company has purchased life insurance policies for certain key employees. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement.
Property, Plant and Equipment, Policy [Policy Text Block]	Premises and Equipment and Long Lived Assets Land is carried at cost. Premises and equipment are carried at cost less accumulated depreciation and amortization computed principally by the straight-line method over the following estimated useful lives: Buildings and improvements 20 to 50 years Furniture, fixtures and equipment 3 to 15 years Long-lived assets to be held and those to be disposed of and certain intangibles are periodically evaluated for impairment. See Note 9.
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Other Intangibles Goodwill resulting from business combinations prior to January 1, 2009, represents the excess of the purchase price over the fair value of the net assets of businesses acquired. Goodwill resulting from business combinations after January 1, 2009, is generally determined as the excess of the fair value of the consideration transferred, plus the fair value of any non-controlling interests in the acquiree, over the fair value of the net assets acquired and liabilities assumed as of the acquisition date. Goodwill and intangible assets acquired in a purchase business combination and determined to have an indefinite useful life are not amortized, but tested for impairment at least annually. The Company has selected November 30 as the date to perform the annual impairment test. Intangible assets with definite useful lives are amortized over their estimated useful lives to their estimated residual values. Goodwill is the only intangible asset with an indefinite life on First Defiance’s balance sheet. Other intangible assets consist of core deposit and acquired customer relationship intangible assets arising from whole bank, insurance and branch acquisitions. They are initially recorded at fair value and then amortized on an accelerated basis over their estimated lives, which range from five years for non-compete agreements to 10 to 20 years for core deposit and customer relationship intangibles. See Note 10.
Real Estate Held for Development and Sale, Policy [Policy Text Block]	Real Estate and Other Assets Held for Sale Real estate and other assets held for sale are comprised of properties or other assets acquired through foreclosure proceedings or acceptance of a deed in lieu of foreclosure. These assets are initially recorded at fair value less costs to sell when acquired, establishing a new cost basis. Losses arising from the acquisition of such property are charged against the allowance for loan losses at the time of acquisition. These properties are carried at the lower of cost or fair value, less estimated costs to dispose. If fair value declines subsequent to foreclosure, the property is written down against expense. Costs after acquisition are expensed.
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]	Stock Compensation Plans Compensation cost is recognized for stock options and restricted share awards issued to employees and directors, based on the fair value of these awards at the date of grant. A Black-Scholes model is utilized to estimate the fair value of stock options. Restricted shares awards are valued at the market value of Company stock at the date of the grant. Compensation cost is recognized over the required service period, generally defined as the vesting period. For awards with graded vesting, compensation cost is recognized on a straight-line basis over the requisite service period for the entire award. See Note 20.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value of Financial Instruments Fair values of financial instruments are estimated using relevant market information and other assumptions, as more fully disclosed in Note 22. Fair value estimates involve uncertainties and matters of significant judgment regarding interest rates, credit risk, prepayments, and other factors, especially in the absence of broad markets for particular items. Changes in assumptions or in market conditions could significantly affect the estimates.
Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Sales, Policy [Policy Text Block]	Transfers of Financial Assets Transfers of financial assets are accounted for as sales, when control over the assets has been relinquished. Control over transferred assets is deemed to be surrendered when the assets have been isolated from the Company, the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets and the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.
Loans and Leases Receivable, Mortgage Banking Activities, Policy [Policy Text Block]	Mortgage Banking Derivatives Commitments to fund mortgage loans (interest rate locks) to be sold into the secondary market and forward commitments for the future delivery of these mortgage loans are accounted for as free standing derivatives. Fair values of these mortgage derivatives are estimated based on changes in mortgage interest rates from the date the interest on the loan is locked. The Company enters into forward commitments for the future delivery of mortgage loans when interest rate locks are entered into, in order to hedge the change in interest rates resulting from its commitments to fund the loans. Changes in fair values of these derivatives are included in mortgage banking income.
Segment Reporting, Policy [Policy Text Block]	Operating Segments Management considers the following factors in determining the need to disclose separate operating segments: (1) the nature of products and services, which are all financial in nature; (2) the type and class of customer for the products and services; in First Defiance’s case retail customers for retail bank and insurance products and commercial customers for commercial loan, deposit, life, health and property and casualty insurance needs; (3) the methods used to distribute products or provide services; such services are delivered through banking and insurance offices and through bank and insurance customer contact representatives. Retail and commercial customers are frequently targets for both banking and insurance products; (4) the nature of the regulatory environment; both banking and insurance entities are subject to various regulatory bodies and a number of specific regulations. Quantitative thresholds as stated in FASB ASC Topic 280, Segment Reporting
Dividend Restriction [Policy Text Block]	Dividend Restriction Banking regulations require maintaining certain capital levels and may limit the dividends paid by First Federal to First Defiance. See Note 17 for further details on restrictions.
Loan Commitments, Policy [Policy Text Block]	Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded.
Malpractice Loss Contingency, Policy [Policy Text Block]	Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there are any such matters that will have a material effect on the financial statements.
Income Tax, Policy [Policy Text Block]	Income Taxes Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. Realization of deferred tax assets is dependent upon the generation of a sufficient level of future taxable income and recoverable taxes paid in prior years. Although realization is not assured, management believes it is more likely than not that all of the deferred tax assets will be realized. The Company recognizes interest and/or penalties related to income tax matters in income tax expense. In December 2017, a law was enacted which changed the corporate federal income tax rate from 35% to 21%, beginning January 1, 2018. Accordingly, the Company’s deferred tax assets and liabilities were re-measured at December 31, 2017, using the 21% corporate federal income tax rate resulting in a net tax expense of $154,000. An effective tax rate of 21% is used to determine after-tax components of other comprehensive income (loss) included in the statements of stockholders’ equity. See Note 18. A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded.
Pension and Other Postretirement Plans, Pensions, Policy [Policy Text Block]	Retirement Plans Pension expense is the net of service and interest cost, return on plan assets and amortization of gains and losses not immediately recognized. Employee 401(k) plan expense is the amount of matching contributions. Deferred compensation and supplemental retirement plan expense allocates the benefits over years of service. See Note 16 and 19.
Reclassification, Policy [Policy Text Block]	Reclassifications Some items in the prior year financial statements were reclassified to conform to the current presentation which did not result in any changes to net income or equity.
New Accounting Pronouncements, Policy [Policy Text Block]	Accounting Standards Updates In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, “Revenue from Contracts with Customers.” This standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies generally will be required to use more judgment and make more estimates than under current guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. Subsequent to the issuance of ASU 2014-09, the FASB issued targeted updates to clarify specific implementation issues including ASU No. 2016-08, “Principal versus Agent Considerations (Reporting Revenue Gross versus Net),” ASU No. 2016-10, “Identifying Performance Obligations and Licensing,” ASU No. 2016-12, “Narrow-Scope Improvements and Practical Expedients,” and ASU No. 2016-20 “Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers.” For financial reporting purposes, this standard allows for either full retrospective adoption, meaning the standard is applied to all of the periods presented, or modified retrospective adoption, meaning the standard is applied only to the most current period presented in the financial statements with the cumulative effect of initially applying the standard recognized at the date of initial application. Since the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the new guidance did not have a material impact on revenue most closely associated with financial instruments, including interest income and expense. The Company completed its overall assessment of revenue streams and review of related contracts potentially affected by the ASU, including trust and asset management fees, deposit related fees, interchange fees, merchant income, and annuity and insurance commissions. Based on this assessment, the Company concluded that ASU 2014-09 did not materially change the method in which the Company currently recognizes revenue for these revenue streams. The Company adopted ASU 2014-09 and its related amendments on its required effective date of January 1, 2018, utilizing the modified retrospective approach. Since there was no net income impact upon adoption of the new guidance, a cumulative effect adjustment to opening retained earnings was not deemed necessary. See “Revenue Recognition” below for additional information related to revenue generated from contracts with customers. In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities.” This ASU addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments by making targeted improvements to GAAP as follows: (1) require 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. However, an entity may choose to measure equity investments that do not have readily determinable fair values at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer; (2) simplify the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value; (3) eliminate the requirement to disclose the fair value of financial instruments measured at amortized cost for entities that are not public business entities; (4) eliminate 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; (5) require public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes; (6) require an entity 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 when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments; (7) require separate presentation of financial assets and financial liabilities by measurement category and form of financial asset (that is, securities or loans receivable) on the balance sheet or the accompanying notes to the financial statements; and (8) clarify that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity’s other deferred tax assets. The adoption of ASU No. 2016-01 on January 1, 2018, did not have a material impact on the Company’s consolidated financial statements. Also in conjunction with the adoption, the Company’s fair value measurement of financial instruments was based upon an exit price notion as required in ASU 2016-01. The guidance was applied on a prospective approach resulting in prior-periods no longer being comparable. In February 2018, the FASB issued ASU No. 2018-02, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” This ASU allows a reclassification from accumulated other comprehensive income (“AOCI”) to retained earnings for certain income tax effects stranded in AOCI as a result of public law No. 115-97, known as the Tax Cuts and Jobs Act (“Tax Act”). Consequently, the reclassification eliminates the stranded tax effects resulting from the Tax Act and is intended to improve the usefulness of information reported to financial statement users. However, because the ASU only relates to the reclassification of the income tax effects of the Tax Act, the underlying guidance that requires the effect of a change in tax laws or rates to be included in income from continuing operations is not affected. The Company adopted ASU No. 2018-02 during the first quarter of 2018, and elected to reclassify the income tax effects of the Tax Act from AOCI to retained earnings. The reclassification increased AOCI and decreased retained earnings by $47,000, with zero net effect on total shareholders’ equity. In February 2016, the FASB issued ASU No. 2016-02 — Leases (Topic 842). The objective of the update is to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. The amendments in this update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company elected to apply ASU 2016-02 as of the beginning of the period of adoption (January 1, 2019) and will not restate comparative periods. The Company also expect to elect certain optional practical expedients. The Company has implemented a third party software solution to assist with the accounting under the new standard. The Company’s operating leases relate primarily to office space and bank branches. Upon adoption of ASU 2016-02 on January 1, 2019, the Company expects to recognize right-to-use assets and related lease liabilities totaling approximately $8.8 million and $9.3 million, respectively. In June 2016, the FASB issued ASU No. 2016-13, “Measurement of Credit Losses on Financial Instruments.” This ASU significantly changes how entities will measure credit losses for most financial assets and certain other instruments that aren’t measured at fair value through net income. In issuing the standard, the FASB is responding to criticism that today’s guidance delays recognition of credit losses. The standard will replace today’s “incurred loss” approach with an “expected loss” model. The new model, referred to as the current expected credit loss (“CECL”) model, will apply to: (1) financial assets subject to credit losses and measured at amortized cost, and (2) certain off-balance sheet credit exposures. This includes, but is not limited to, loans, leases, held-to-maturity securities, loan commitments, and financial guarantees. The CECL model does not apply to available-for-sale (“AFS”) debt securities. For AFS debt securities with unrealized losses, entities will measure credit losses in a manner similar to what they do today, except that the losses will be recognized as allowances rather than reductions in the amortized cost of the securities. As a result, entities will recognize improvements to estimated credit losses immediately in earnings rather than as interest income over time, as they do today. The ASU also simplifies the accounting model for purchased credit-impaired debt securities and loans. ASU 2016-13 also expands the disclosure requirements regarding an entity’s assumptions, models, and methods for estimating the allowance for loan and lease losses. In addition, entities will need to disclose the amortized cost balance for each class of financial asset by credit quality indicator, disaggregated by the year of origination. ASU No. 2016-13 is effective for interim and annual reporting periods beginning after December 15, 2019; early adoption is permitted for interim and annual reporting periods beginning after December 15, 2018. Entities will apply the standard’s provisions as a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (i.e., modified retrospective approach). The Company continues its implementation efforts through its established Company-wide implementation committee along with a third-party software vendor to assist in the implementation process. The committee’s review indicates the Company has maintained sufficient historical loan data to support the requirement of this pronouncement and is currently evaluating the various loss methodologies to determine their correlations to the Company’s loan segments historical performance. Early adoption is permitted, however, the Company does not currently plan to adopt this ASU early. Revenue Recognition Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers (“ASC 606”), establishes principles for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the entity's contracts to provide goods or services to customers. The core principle requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those goods or services recognized as performance obligations are satisfied. The majority of the Company’s revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as loans, letters of credit, and investment securities, as well as revenue related to mortgage servicing activities, as these activities are subject to other GAAP discussed elsewhere within the Company’s disclosures. Descriptions of the Company’s revenue-generating activities that are within the scope of ASC 606, which are presented in the Company’s statement of income as components of noninterest income are as follows: · Service charges on deposit accounts - these represent general service fees for monthly account maintenance and activity or transaction-based fees and consist of transaction-based revenue, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when our performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (such as a wire transfer). Payment for such performance obligations are generally received at the time the performance obligations are satisfied. Service charges on deposit accounts that are within the scope of ASC 606 were $7.6 million in 2018. Income from services charges on deposit accounts is included in service fees and other charges in noninterest income. · Interchange income - this represents fees earned from debit and credit cardholder transactions. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recognized daily, concurrent with the transaction processing services provided to the cardholder. Interchange fees were $4.1 million in 2018, which are reported net of network related charges. Interchange income is included in service fees and other charges in noninterest income. · Wealth management and trust fee income - this represents monthly fees due from wealth management customers as consideration for managing the customers’ assets. Wealth management and trust services include custody of assets, investment management, escrow services, and fees for trust services and similar fiduciary activities. Revenue is recognized when our performance obligation is completed each month, which is generally the time that payment is received. Also included are fees received from a third party broker-dealer as part of a revenue-sharing agreement for fees earned from customers that we refer to the third party. These fees are paid to us by the third party on a quarterly basis and recognized ratably throughout the quarter as our performance obligation is satisfied. Revenue from wealth management and trust services were $821,000 and $2.1 million, respectively, in 2018. Income from wealth management services is included in other noninterest income in total noninterest income. Trust fees are reported separately in total noninterest income. · Gain/loss on sales of other real estate owned (“OREO”) - the Company records a gain or loss from the sale of OREO when control of the property transfers to the buyer, which generally occurs at the time of an executed deed. When the Company finances the sale of OREO to the buyer, the Company assesses whether the buyer is committed to perform their obligations under the contract and whether collectability of the transaction price is probable. Once these criteria are met, the OREO asset is derecognized and the gain or loss on sale is recorded upon the transfer of control of the property to the buyer. In determining the gain or loss on the sale, the Company adjusts the transaction price and related gain or loss on sale if a significant financing component is present. Income from the gain/loss on sales of OREO was a loss of $28,000 in 2018. Income from the gain or loss on sales of OREO is included in other noninterest income in total noninterest income. · Insurance commissions - this represents new commissions that are recognized when the Company sells insurance policies to customers. The Company is also entitled to renewal commissions and, in some cases, contingent commissions in the form of profit sharing which are recognized in subsequent periods. The initial commission is recognized when the insurance policy is sold to a customer. Renewal commission is variable consideration and is recognized in subsequent periods when the uncertainty around variable consideration is subsequently resolved (i.e., when customer renews the policy). Contingent commission is also a variable consideration that is not recognized until the variability surrounding realization of revenue is resolved. Another source of variability is the ability of the policy holder to cancel the policy anytime and in such cases, the Company may be required, under the terms of the contract, to return part of the commission received. The variability related to cancellation of the policy is not deemed significant and thus, does not impact the amount of revenue recognized. In the event the policyholder chooses to cancel the policy at any time, the revenue for amounts which qualify for claw-back are reversed in the period the cancellation occurs. Management views the income sources from insurance commissions in two categories: (i) new/renewal commissions and (ii) contingent commissions. Insurance commissions were $14.1 million for 2018, of which, $13.1 million were new/renewal commissions and $1.0 million were contingent commissions.

Statement of Accounting Polic_3

Statement of Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2018
Accounting Policies [Abstract]
Premises and Equipment and Long Lived Assets [Table Text Block]	Land is carried at cost. Premises and equipment are carried at cost less accumulated depreciation and amortization computed principally by the straight-line method over the following estimated useful lives: Buildings and improvements 20 to 50 years Furniture, fixtures and equipment 3 to 15 years

Business Combinations (Tables)

Business Combinations (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	The following table summarizes the fair value of the total consideration transferred as part of the Commercial Bancshares acquisition as well as the fair value of identifiable assets and liabilities assumed as of the effective date of the transaction. February 24, 2017 (In Thousands) Cash Consideration $ 12,340 Equity – Dollar Value of Issued Shares 56,532 Fair Value of Total Consideration Transferred 68,872 Recognized Amounts of Identifiable Assets Acquired and Liabilities Assumed: Cash and Cash Equivalents 35,411 Federal Funds Sold 2,769 Securities 4,338 Loans 285,448 FHLB Stock of Cincinnati and Other Stock 2,194 Office Properties and Equipment 5,256 Intangible Assets 4,900 Bank-Owned Life Insurance 8,168 Accrued Interest Receivable and Other Assets 3,606 Deposits – NonInterest-Bearing (56,061 ) Deposits – Interest-Bearing (251,931 ) Advances from FHLB (1,403 ) Accrued Interest Payable and Other Liabilities (2,717 ) Total Identifiable Net Assets 39,978 Goodwill $ 28,894
Business Acquisition, Pro Forma Information [Table Text Block]	The following table presents unaudited pro forma information as if the acquisition had occurred on January 1, 2016, after giving effect to certain adjustments. The unaudited pro forma information for the twelve months ended December 31, 2017, and December 31, 2016, includes adjustments for interest income on loans and securities acquired, amortization of intangibles arising from the transaction, interest expense on deposits and borrowings acquired, and the related income tax effects. The unaudited pro forma financial information is not necessarily indicative of the results of operations that would have occurred had the transaction been effected on the assumed date. Pro Forma Twelve Pro Forma Twelve Months Ended Months Ended December 31, 2017 December 31, 2016 (In Thousands, except per share data) Net Interest Income $ 98,856 $ 90,452 Provision for loan losses 2,949 753 Noninterest Income 40,338 35,496 Noninterest Expense 82,597 76,393 Income Before Income Taxes 53,648 48,802 Income Tax Expense 17,780 15,276 Net Income $ 35,868 $ 33,526 Diluted Earnings Per Share $ 3.51 $ 3.29

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	The following table sets forth the computation of basic and diluted earnings per common share for the years ended December 31: 2018 2017 2016 (In Thousands, Except Per Share Amounts) Basic Earnings Per Share: Net income available to common shareholders $ 46,249 $ 32,268 $ 28,843 Less: Income allocated to participating securities 16 5 39 Net income allocated to common shareholders $ 46,233 $ 32,263 $ 28,804 Weighted average common shares outstanding Including participating securities 20,358 19,950 17,960 Less: Participating securities 9 18 22 Average common shares 20,349 19,932 17,938 Basic earnings per common share $ 2.27 $ 1.62 $ 1.61 Diluted Earnings Per Share: Net income allocated to common shareholders $ 46,233 $ 32,263 $ 28,804 Weighted average common shares outstanding for basic earnings per common share 20,349 19,932 17,938 Add: Dilutive effects of stock options 119 124 132 Average shares and dilutive potential common shares 20,468 20,056 18,070 Diluted earnings per common share $ 2.26 $ 1.61 $ 1.60

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2018
Marketable Securities [Abstract]
Schedule of Available-for-sale and Held to Maturity Securities [Table Text Block]	The following tables summarize the amortized cost and fair value of available-for-sale securities and held-to-maturity investment securities at December 31, 2018 and 2017, and the corresponding amounts of gross unrealized and unrecognized gains and losses: Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value (In Thousands) 2018 Available-for-sale Obligations of U.S. government corporations and agencies $ 2,519 $ 2 $ (18 ) $ 2,503 Mortgage-backed securities - residential 76,165 111 (1,566 ) 74,710 REMICs 2,712 4 (7 ) 2,709 Collateralized mortgage obligations - residential 103,026 124 (1,689 ) 101,461 Corporate bonds 12,910 44 (148 ) 12,806 Obligations of state and political subdivisions 99,349 1,258 (720 ) 99,887 Total Available-for-Sale $ 296,681 $ 1,543 $ (4,148 ) $ 294,076 Gross Gross Amortized Unrecognized Unrecognized Fair Cost Gains Losses Value (In Thousands) Held-to-Maturity FHLMC certificates $ 8 $ - $ - $ 8 FNMA certificates 31 - - 31 GNMA certificates 12 - - 12 Obligations of states and political subdivisions 475 - - 475 Total Held-to-Maturity $ 526 $ - $ - $ 526 Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value (In Thousands) 2017 Available-for-sale Obligations of U.S. government corporations and agencies $ 518 $ - $ (10 ) $ 508 Mortgage-backed securities - residential 59,942 90 (763 ) 59,269 REMICs 1,072 - (7 ) 1,065 Collateralized mortgage obligations - residential 94,588 180 (892 ) 93,876 Preferred stock - 1 - 1 Corporate bonds 12,914 189 - 13,103 Obligations of state and political subdivisions 90,692 2,426 (290 ) 92,828 Total Available-for-Sale $ 259,726 $ 2,886 $ (1,962 ) $ 260,650 Gross Gross Amortized Unrecognized Unrecognized Fair Cost Gains Losses Value (In Thousands) Held-to-Maturity FHLMC certificates $ 10 $ - $ - $ 10 FNMA certificates 41 1 - 42 GNMA certificates 17 - - 17 Obligations of states and political subdivisions 580 - - 580 Total Held-to-Maturity $ 648 $ 1 $ - $ 649
Investments Classified by Contractual Maturity Date [Table Text Block]	The amortized cost and fair value of the investment securities portfolio at December 31, 2018, is shown below by contractual maturity. Expected maturities will differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties. For purposes of the maturity tables below, mortgage-backed securities and collateralized mortgage obligations, which are not due at a single maturity date, have not been allocated over maturity groupings. Available-for-Sale Amortized Fair Cost Value (In Thousands) 2018 Available-for-sale Due in one year or less $ 771 $ 773 Due after one year through 22,957 22,969 Due after five years through 34,245 34,904 Due after ten years 56,805 56,550 MBS/CMO/REMIC 181,903 178,880 Total $ 296,681 $ 294,076 Held-to-maturity Due in one year or less $ 31 $ 31 Due after five years through ten years 444 444 MBS 51 51 Total $ 526 $ 526
Unrealized Gain (Loss) on Investments [Table Text Block]	The following table summarizes First Defiance’s securities that were in an unrealized loss position at December 31, 2018, and December 31, 2017: Duration of Unrealized Loss Position Less than 12 Months 12 Months or Longer Total Gross Gross Fair Unrealized Fair Unrealized Fair Unrealized Value Loss Value Loss Value Loses (In Thousands) At December 31, 2018 Available-for-sale securities: Obligations of U.S. government corporations and agencies $ - $ - $ 500 $ (18 ) $ 500 $ (18 ) Mortgage-backed securities-residential 11,589 (71 ) 48,665 (1,495 ) 60,254 (1,566 ) REMIC’s - - 857 (7 ) 857 (7 ) Collateralized mortgage obligations 11,613 (53 ) 70,585 (1,636 ) 82,198 (1,689 ) Corporate Bonds 5,752 (148 ) - - 5,752 (148 ) Obligations of state and political subdivisions 11,974 (69 ) 16,492 (651 ) 28,466 (720 ) Held to maturity securities: 8 - 26 - 34 - Total temporarily impaired securities $ 40,936 $ (341 ) $ 137,125 $ (3,807 ) $ 178,061 $ (4,148 ) At December 31, 2017 Available-for-sale securities: Obligations of U.S. government corporations and agencies $ - $ - $ 508 $ (10 ) $ 508 $ (10 ) Mortgage-backed securities-residential 27,881 (215 ) 19,038 (548 ) 46,919 (763 ) REMIC’s 1,065 (7 ) - - 1,065 (7 ) Collateralized mortgage obligations 49,107 (320 ) 20,804 (572 ) 69,911 (892 ) Obligations of state and political subdivisions 14,249 (163 ) 3,370 (127 ) 17,619 (290 ) Held to maturity securities: 12 - 9 - 21 - Total temporarily impaired securities $ 92,314 $ (705 ) $ 43,729 $ (1,257 ) $ 136,043 $ (1,962 )
Marketable Securities [Table Text Block]	The proceeds from sales and calls of securities and the associated gains and losses for the years ended December 31 are listed below: 2018 2017 2016 (In Thousands) Proceeds $ 5,503 $ 34,248 $ 14,871 Gross realized gains 178 665 509 Gross realized losses (5 ) (81 ) -

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Line of Credit Facilities [Table Text Block]	The Company’s maximum obligation to extend credit for loan commitments (unfunded loans and unused lines of credit) and standby letters of credit outstanding on December 31 was as follows (In Thousands): 2018 2017 Fixed Rate Variable Rate Fixed Rate Variable Rate Commitments to make loans $ 44,352 $ 114,308 $ 42,458 $ 161,778 Unused lines of credit 7,523 382,189 6,245 408,831 Standby letters of credit - 7,239 - 7,605 Total $ 51,875 $ 503,736 $ 48,703 $ 578,214

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2018
Loans Receivable, Net [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	Loans receivable consist of the following: December 31, December 31, (In Thousands) Real Estate: Secured by 1-4 family residential $ 322,686 $ 274,862 Secured by multi-family residential 278,358 248,092 Secured by commercial real estate 1,126,452 987,129 Construction 265,772 265,476 1,993,268 1,775,559 Other Loans: Commercial 509,577 526,142 Home equity and improvement 128,152 135,457 Consumer Finance 34,405 29,109 672,134 690,708 Total loans 2,665,402 2,466,267 Deduct: Undisbursed loan funds (123,293 ) (115,972 ) Net deferred loan origination fees and costs (2,070 ) (1,582 ) Allowance for loan loss (28,331 ) (26,683 ) Totals $ 2,511,708 $ 2,322,030
Schedule of Valuation Allowance for Impairment of Recognized Servicing Assets [Table Text Block]	The following table discloses the year-to-date activity in the allowance for loan loss for the dates indicated by portfolio segment (In Thousands): Year to Date December 31, 1-4 Family Multi- Family Commercial Construction Commercial Home Equity Consumer Total Beginning Allowance $2,532 $2,702 $10,354 $647 $7,965 $2,255 $228 $26,683 Charge-Offs (261 ) - (1,387 ) - (724 ) (269 ) (233 ) (2,874 ) Recoveries 131 57 720 - 2,221 191 26 3,346 Provisions 479 342 2,354 35 (2,181 ) (151 ) 298 1,176 Ending Allowance $ 2,881 $ 3,101 $ 12,041 $ 682 $ 7,281 $ 2,026 $ 319 $ 28,331 Year to Date December 31, 1-4 Family Multi- Family Commercial Construction Commercial Home Equity Consumer Total Beginning Allowance $2,627 $2,228 $10,625 $450 $7,361 $2,386 $207 $25,884 Charge-Offs (279 ) - (429 ) - (2,301 ) (301 ) (139 ) (3,449 ) Recoveries 115 32 657 - 243 167 85 1,299 Provisions 69 442 (499 ) 197 2,662 3 75 2,949 Ending Allowance $ 2,532 $ 2,702 $ 10,354 $ 647 $ 7,965 $ 2,255 $ 228 $ 26,683 Year to Date December 31, 1-4 Family Multi- Family Commercial Construction Commercial Home Equity Consumer Total Beginning Allowance $3,212 $2,151 $11,772 $517 $5,255 $2,304 $171 $25,382 Charge-Offs (350 ) - (92 ) - (615 ) (268 ) (94 ) (1,419 ) Recoveries 166 - 923 - 335 150 64 1,638 Provisions (401 ) 77 (1,978 ) (67 ) 2,386 200 66 283 Ending Allowance $ 2,627 $ 2,228 $ 10,625 $ 450 $ 7,361 $ 2,386 $ 207 $ 25,884
Schedule of Allowance for Loan Losses and Recorded Investment in Portfolio Segment Based on Impairment [Table Text Block]	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 method as of December 31, 2018: (In Thousands) 1-4 Family Multi Family Residential Residential Commercial Home Equity Consumer Real Estate Real Estate Real Estate Construction Commercial & Improvement Finance Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 175 $ 3 $ 95 $ - $ 79 $ 242 $ 1 $ 595 Collectively evaluated for impairment 2,706 3,098 11,946 682 7,202 1,784 318 27,736 Acquired with deteriorated credit quality - - - - - - - - Total ending allowance balance $ 2,881 $ 3,101 $ 12,041 $ 682 $ 7,281 $ 2,026 $ 319 $ 28,331 Loans: Loans individually evaluated for impairment $ 6,774 $ 1,347 $ 26,334 $ - $ 10,477 $ 963 $ 45 $ 45,940 Loans collectively evaluated for impairment 315,385 277,105 1,102,355 142,096 500,730 128,065 34,486 2,500,222 Loans acquired with deteriorated credit quality 1,012 296 846 - 177 - - 2,331 Total ending loans balance $ 323,171 $ 278,748 $ 1,129,535 $ 142,096 $ 511,384 $ 129,028 $ 34,531 $ 2,548,493 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 method as of December 31, 2017: (In Thousands) 1-4 Family Multi Family Residential Residential Commercial Home Equity Consumer Real Estate Real Estate Real Estate Construction Commercial & Improvement Finance Total Allowance for loan losses: Ending allowance balance attributable to loans: Individually evaluated for impairment $ 167 $ 7 $ 118 $ - $ 187 $ 279 $ - $ 758 Collectively evaluated for impairment 2,365 2,695 10,236 647 7,778 1,976 228 25,925 Acquired with deteriorated credit quality - - - - - - - - Total ending allowance balance $ 2,532 $ 2,702 $ 10,354 $ 647 $ 7,965 $ 2,255 $ 228 $ 26,683 Loans: Loans individually evaluated for impairment $ 6,910 $ 2,278 $ 31,821 $ - $ 14,373 $ 1,176 $ 50 $ 56,608 Loans collectively evaluated for impairment 267,377 245,823 956,238 149,174 513,218 135,098 29,125 2,296,053 Loans acquired with deteriorated credit quality 1,069 301 2,121 - 337 - - 3,828 Total ending loans balance $ 275,356 $ 248,402 $ 990,180 $ 149,174 $ 527,928 $ 136,274 $ 29,175 $ 2,356,489
Loans Receivable, Impaired, Interest Income, Cash Basis Method [Table Text Block]	The following tables presents the average balance, interest income recognized and cash basis income recognized on impaired loans by class of loans for the years ended December 31, 2018, 2017 and 2016 (In Thousands): Twelve Months Ended December 31, 2018 Average Interest Cash Basis Residential Owner Occupied $ 4,704 $ 151 $ 150 Residential Non Owner Occupied 2,354 133 126 Total 1-4 Family Residential Real Estate 7,058 284 276 Multi-Family Residential Real Estate 1,644 90 89 CRE Owner Occupied 9,992 234 221 CRE Non Owner Occupied 2,620 94 93 Agriculture Land 13,827 575 575 Other CRE 1,304 106 106 Total Commercial Real Estate 27,743 1,009 995 Construction - - - Commercial Working Capital 8,047 256 245 Commercial Other 3,501 119 119 Total Commercial 11,548 375 364 Home Equity and Home Improvement 1,150 38 38 Consumer Finance 39 4 4 Total Impaired Loans $ 49,182 $ 1,800 $ 1,766 Twelve Months Ended December 31, 2017 Average Interest Cash Basis Residential Owner Occupied $ 3,811 $ 138 $ 138 Residential Non Owner Occupied 3,038 138 138 Total 1-4 Family Residential Real Estate 6,849 276 276 Multi-Family Residential Real Estate 2,471 58 58 CRE Owner Occupied 10,592 110 109 CRE Non Owner Occupied 3,768 140 133 Agriculture Land 9,667 472 229 Other CRE 1,603 76 70 Total Commercial Real Estate 25,630 798 541 Construction - - - Commercial Working Capital 5,235 129 123 Commercial Other 5,940 109 79 Total Commercial 11,175 238 202 Home Equity and Home Improvement 1,217 43 43 Consumer Finance 59 4 4 Total Impaired Loans $ 47,401 $ 1,417 $ 1,124 Twelve Months Ended December 31, 2016 Average Interest Cash Basis Residential Owner Occupied $ 3,954 $ 244 $ 237 Residential Non Owner Occupied 3,133 211 210 Total 1-4 Family Residential Real Estate 7,087 455 447 Multi-Family Residential Real Estate 3,946 124 123 CRE Owner Occupied 6,925 203 183 CRE Non Owner Occupied 5,351 411 407 Agriculture Land 2,283 128 68 Other CRE 1,632 71 70 Total Commercial Real Estate 16,191 813 728 Construction - - - Commercial Working Capital 1,606 109 90 Commercial Other 2,393 81 79 Total Commercial 3,999 190 169 Home Equity and Home Improvement 1,543 85 83 Consumer Finance 67 8 8 Total Impaired Loans $ 32,833 $ 1,675 $ 1,558
Impaired Financing Receivables [Table Text Block]	The following table presents loans individually evaluated for impairment by class of loans (In Thousands): December 31, 2018 December 31, 2017 Unpaid Principal Balance* Recorded Allowance Unpaid Recorded Allowance With no allowance recorded: Residential Owner Occupied $ 901 $ 775 $ - $ 2,507 $ 2,364 $ - Residential Non Owner Occupied 950 955 - 1,711 1,708 - Total 1-4 Family Residential Real Estate 1,851 1,730 - 4,218 4,072 - Multi-Family Residential Real Estate 1,296 1,302 - 2,095 2,102 - CRE Owner Occupied 7,464 6,202 - 12,273 11,804 - CRE Non Owner Occupied 1,824 1,659 - 3,085 2,925 - Agriculture Land 14,915 14,994 - 13,029 13,185 - Other CRE 464 462 - 981 768 - Total Commercial Real Estate 24,667 23,317 - 29,368 28,682 - Construction - - - - - - Commercial Working Capital 7,569 7,498 - 5,462 5,422 - Commercial Other 2,095 2,100 - 9,916 7,644 - Total Commercial 9,664 9,598 - 15,378 13,066 - Home Equity and Home Improvement - - - 630 584 - Consumer Finance - - - 42 42 - Total loans with no allowance recorded $ 37,478 $ 35,947 $ - $ 51,731 $ 48,548 $ - With an allowance recorded: Residential Owner Occupied $ 3,926 $ 3,884 $ 148 $ 1,841 $ 1,814 $ 137 Residential Non Owner Occupied 1,152 1,160 27 1,031 1,024 30 Total 1-4 Family Residential Real Estate 5,078 5,044 175 2,872 2,838 167 Multi-Family Residential Real Estate 44 44 3 175 176 7 CRE Owner Occupied 2,419 1,935 38 2,007 1,546 44 CRE Non Owner Occupied 350 353 16 651 593 28 Agriculture Land 37 38 2 293 292 14 Other CRE 1,107 691 39 909 708 32 Total Commercial Real Estate 3,913 3,017 95 3,860 3,139 118 Construction - - - - - - Commercial Working Capital 525 528 55 447 449 77 Commercial Other 560 352 24 854 858 110 Total Commercial 1,085 880 79 1,301 1,307 187 Home Equity and Home Improvement 1,013 963 242 596 592 279 Consumer Finance 45 45 1 8 8 - Total loans with an allowance recorded $ 11,178 $ 9,993 $ 595 $ 8,812 $ 8,060 $ 758 * Presented gross of charge offs
Schedule of Non-Performing Loans and Real Estate Owned [Table Text Block]	The following table presents the current balance of the aggregate amounts of non-performing assets, comprised of non-performing loans and real estate owned on the dates indicated: December 31, December 31, (In Thousands) Non-accrual loans $ 19,016 $ 30,715 Loans over 90 days past due and still accruing - - Total non-performing loans 19,016 30,715 Real estate and other assets held for sale 1,205 1,532 Total non-performing assets $ 20,221 $ 32,247 Troubled debt restructuring, still accruing $ 11,573 $ 13,770
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	The following table presents the aging of the recorded investment in past due and non-accrual loans as of December 31, 2018, by class of loans: (In Thousands) Current 30-59 days 60-89 days 90+ days Total Total Non Residential Owner Occupied $ 199,664 $ 887 $ 821 $ 1,402 $ 3,110 $ 3,266 Residential Non Owner Occupied 119,988 64 180 165 409 363 Total 1-4 Family Residential Real Estate 319,652 951 1,001 1,567 3,519 3,629 Multi-Family Residential Real Estate 278,748 - - - - 102 CRE Owner Occupied 416,879 52 300 138 490 4,377 CRE Non Owner Occupied 534,823 6 119 - 125 620 Agriculture Land 129,040 66 - 2,869 2,935 5,253 Other Commercial Real Estate 45,232 11 - - 11 - Total Commercial Real Estate 1,125,974 135 419 3,007 3,561 10,250 Construction 142,096 - - - - - Commercial Working Capital 217,832 268 - 3,838 4,106 4,021 Commercial Other 289,125 32 54 235 321 480 Total Commercial 506,957 300 54 4,073 4,427 4,501 Home Equity and Home Improvement 127,346 1,446 146 90 1,682 394 Consumer Finance 34,224 134 77 96 307 126 Total Loans $ 2,534,997 $ 2,966 $ 1,697 $ 8,833 $ 13,496 $ 19,002 The following table presents the aging of the recorded investment in past due and non-accrual loans as of December 31, 2017, by class of loans (In Thousands): Current 30-59 days 60-89 days 90+ days Total Total Non Residential Owner Occupied $ 175,139 $ 821 $ 1,033 $ 1,227 $ 3,081 $ 2,510 Residential Non Owner Occupied 96,400 495 8 233 736 520 Total 1-4 Family Residential Real Estate 271,539 1,316 1,041 1,460 3,817 3,030 Multi-Family Residential Real Estate 247,980 422 - - 422 128 CRE Owner Occupied 393,125 195 188 1,268 1,651 10,775 CRE Non Owner Occupied 403,656 1 91 424 516 2,431 Agriculture Land 131,753 412 - 66 478 4,144 Other Commercial Real Estate 58,784 13 - 204 217 734 Total Commercial Real Estate 987,318 621 279 1,962 2,862 18,084 Construction 149,174 - - - - - Commercial Working Capital 233,632 102 1,264 876 2,242 2,369 Commercial Other 291,455 82 - 517 599 6,474 Total Commercial 525,087 184 1,264 1,393 2,841 8,843 Home Equity and Home Improvement 133,144 2,490 434 206 3,130 591 Consumer Finance 28,800 293 80 2 375 27 Total Loans $ 2,343,042 $ 5,326 $ 3,098 $ 5,023 $ 13,447 $ 30,703
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	The following table presents loans by class modified as TDRs that occurred during the years indicated (Dollars in Thousands): Loans Modified as a TDR for the Loans Modified as a TDR for the Loans Modified as a TDR for the TDRs Number Recorded Number Recorded Number of Recorded Residential Owner Occupied 18 $ 980 24 $ 982 17 $ 778 Residential Non Owner Occupied 4 189 5 193 5 494 Multi Family - - - - 2 1,885 CRE Owner Occupied 12 1,639 2 149 - - CRE Non Owner Occupied 1 42 1 262 5 974 Agriculture Land - - 5 1,700 1 45 Other CRE - - 2 153 1 348 Commercial Working Capital 5 2,898 7 1,475 1 226 Commercial Other 1 44 7 3,833 1 587 Home Equity and Home Improvement 7 89 6 152 9 281 Consumer Finance 8 29 5 14 2 14 Total 56 $ 5,910 64 $ 8,913 44 $ 5,632
Troubled Debt Restructurings on Payments [Table Text Block]	The following table presents loans by class modified as TDRs for which there was a payment default within twelve months following the modification during the indicated: Twelve Months Ended Twelve Months Ended Twelve Months Ended TDRs That Subsequently Defaulted: Number of Recorded Number of Recorded Number Recorded Residential Owner Occupied 1 $ 76 - $ - - $ - Residential Non Owner Occupied 1 45 - - - - CRE Owner Occupied - - - - - - CRE Non Owner Occupied - - - - 1 205 Agriculture Land - - - - - - Other CRE - - - - - - Commercial Working Capital 3 2,644 - - - - Commercial Other 1 30 - - - - Home Equity and Home Improvement 1 61 - - - - Consumer - - - - - - Total 7 $ 2,856 - $ - 1 $ 205
Financing Receivable Credit Quality Indicators [Table Text Block]	As of December 31, 2018, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows (In Thousands): Class Pass Special Substandard Doubtful Not Total Residential Owner Occupied $ 9,419 $ 91 $ 3,130 $ - $ 190,134 $ 202,774 Residential Non Owner Occupied 109,885 700 3,087 - 6,725 120,397 Total 1-4 Family Real Estate 119,304 791 6,217 - 196,859 323,171 Multi-Family Residential Real Estate 276,594 - 2,047 - 107 278,748 CRE Owner Occupied 402,008 5,724 9,547 - 89 417,368 CRE Non Owner Occupied 529,842 2,807 2,297 - - 534,946 Agriculture Land 111,595 4,023 16,358 - - 131,976 Other CRE 42,189 730 1,244 - 1,082 45,245 Total Commercial Real Estate 1,085,634 13,284 29,446 - 1,171 1,129,535 Construction 122,775 219 - - 19,102 142,096 Commercial Working Capital 205,903 6,546 9,489 - - 221,938 Commercial Other 279,234 7,011 3,201 - - 289,446 Total Commercial 485,137 13,557 12,690 - - 511,384 Home Equity and Home Improvement - - 434 - 128,594 129,028 Consumer Finance - - 206 - 34,325 34,531 Total Loans $ 2,089,444 $ 27,851 $ 51,040 $ - $ 380,158 $ 2,548,493 As of December 31, 2017, and based on the most recent analysis performed, the risk category of loans by class of loans is as follows (In Thousands): Class Pass Special Substandard Doubtful Not Total Residential Owner Occupied $ 7,534 $ 99 $ 2,367 $ - $ 168,220 $ 178,220 Residential Non Owner Occupied 85,802 935 3,835 - 6,564 97,136 Total 1-4 Family Real Estate 93,336 1,034 6,202 - 174,784 275,356 Multi-Family Residential Real Estate 242,969 2,503 2,819 - 111 248,402 CRE Owner Occupied 370,613 10,432 13,575 - 156 394,776 CRE Non Owner Occupied 395,264 3,464 5,444 - - 404,172 Agriculture Land 114,776 2,639 14,816 - - 132,231 Other CRE 56,133 165 1,788 - 915 59,001 Total Commercial Real Estate 936,786 16,700 35,623 - 1,071 990,180 Construction 125,519 1,254 - - 22,401 149,174 Commercial Working Capital 222,526 7,605 5,743 - - 235,874 Commercial Other 280,013 3,443 8,598 - - 292,054 Total Commercial 502,539 11,048 14,341 - - 527,928 Home Equity and Home Improvement - - 600 - 135,674 136,274 Consumer Finance - - 82 - 29,093 29,175 Total Loans $ 1,901,149 $ 32,539 $ 59,667 $ - $ 363,134 $ 2,356,489
Schedule Of Deterioration Of Credit Quality Contractual Purchased Loans [Table Text Block]	The outstanding balance of those loans by segment is as follows (In thousands): December 31, 2018 December 31, 2017 1-4 Family Residential Real Estate $ 1,045 $ 1,154 Multi-Family Residential Real Estate 300 309 Commercial Real Estate Loans 899 2,921 Commercial 227 407 Consumer - 2 Total Outstanding Balance $ 2,471 $ 4,793 Recorded Investment, net of allowance of $0 $ 2,331 $ 3,828
Certain Loans Acquired In Transfer Accounted For As Debt Securities Acquired During Period Contractually Required Payments [Table Text Block]	Accretable yield, or income expected to be collected, is as follows: 2018 2017 Balance at January 1 $ 804 $ - New Loans Purchased - 1,018 Accretion of Income (139 ) (163 ) Reclassification from Non-accretable - - Charge-off of Accretable Yield (197 ) (8 ) Balance at December 31 $ 468 $ 847
Schedule Of Contractually Required Payments Receivable Of Loans Purchased With Evidence Of Credit Deterioration [Table Text Block]	Contractually required payments receivable of loans purchased with evidence of credit deterioration during the period ended December 31, 2017, using information as of the date of acquisition are included in the table below. There were no such loans purchased during the year ended December 31, 2018. (In Thousands) 1-4 Family Residential Real Estate $ 1,720 Commercial Real Estate 4,724 Commercial 785 Consumer 4 Total $ 7,233
Schedule Of Loan Allocated To Executive Officers Directors And Their Affiliates [Table Text Block]	Loans to executive officers, directors, and their affiliates are as follows: Years Ended December 31, 2018 2017 (In Thousands) Beginning balance $ 16,728 $ 16,199 New loans 10,806 5,857 Effect of changes in composition of related parties (217 ) - Repayments (5,754 ) (5,328 ) Ending Balance $ 21,563 $ 16,728

Mortgage Banking (Tables)

Mortgage Banking (Tables)	12 Months Ended
	Dec. 31, 2018
Mortgage Banking [Abstract]
Mortgage Loans [Table Text Block]	Net revenues from the sales and servicing of mortgage loans consisted of the following: Years Ended December 31, 2018 2017 2016 (In Thousands) Gain from sale of mortgage loans $ 4,502 $ 4,664 $ 5,311 Mortgage loan servicing revenue (expense): Mortgage loan servicing revenue 3,784 3,714 3,560 Amortization of mortgage servicing rights (1,341 ) (1,464 ) (1,724 ) Mortgage servicing rights valuation adjustments 132 90 123 2,575 2,340 1,959 Net mortgage banking income $ 7,077 $ 7,004 $ 7,270
Capitalized Mortgage and Valuation Allowance [Table Text Block]	Activity for capitalized mortgage servicing rights (“MSRs”) and the related valuation allowance is as follows: Years Ended December 31, 2018 2017 2016 (In Thousands) Mortgage servicing assets: Balance at beginning of period $ 10,240 $ 10,117 $ 9,893 Loans sold, servicing retained 1,520 1,587 1,948 Amortization (1,341 ) (1,464 ) (1,724 ) Carrying value before valuation allowance at end of period 10,419 10,240 10,117 Valuation allowance: Balance at beginning of period (432 ) (522 ) (645 ) Impairment recovery (charges) 132 90 123 Balance at end of period (300 ) (432 ) (522 ) Net carrying value of MSRs at end of period $ 10,119 $ 9,808 $ 9,595 Fair value of MSRs at end of period $ 10,656 $ 9,930 $ 9,770
Servicing Portfolio [Table Text Block]	The Company’s servicing portfolio is comprised of the following: December 31, 2018 2017 Number of Principal Number of Principal Investor Loans Outstanding Loans Outstanding (In Thousands) Fannie Mae 4,919 $ 461,730 4,920 $ 461,783 Freddie Mac 9,571 937,406 9,420 913,632 Federal Home Loan Bank 99 11,983 88 9,723 Other 17 714 19 930 Totals 14,606 $ 1,411,833 14,447 $ 1,386,068
Schedule of Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities [Table Text Block]	10% Adverse 20% Adverse Change Change (In Thousands) Assumption: Decline in fair value from increase in prepayment rate $ 332 $ 670 Decline in fair value from increase in discount rate 220 459

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Table Text Block]	Premises and equipment are summarized as follows: December 31, 2018 2017 (In Thousands) Cost: Land $ 7,977 $ 7,977 Land improvements 1,326 1,326 Buildings 44,632 44,563 Leasehold improvements 1,015 971 Furniture, fixtures and equipment 34,871 34,216 Construction in process 692 1,402 90,513 90,455 Less allowances for depreciation and amortization (49,843 ) (50,238 ) $ 40,670 $ 40,217
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]	Future minimum commitments under non-cancelable operating leases are as follows (In Thousands): 2019 $ 967 2020 884 2021 843 2022 768 2023 739 Thereafter 8,078 Total $ 12,279

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill [Table Text Block]	The change in the carrying amount of goodwill for the year is as follows: December 31, 2018 2017 (In Thousands) Beginning balance $ 98,569 $ 61,798 Goodwill acquired or adjusted during the year - 36,771 Ending balance $ 98,569 $ 98,569
Schedule of Finite-Lived Intangible Assets [Table Text Block]	Activity in intangible assets for the years ended December 31, 2018, 2017 and 2016, was as follows: Gross Carrying Accumulated Net Amount Amortization Value (In Thousands) Balance as of January 1, 2016 $ 14,477 $ (12,606 ) $ 1,871 Amortization of intangible assets - (535 ) (535 ) Balance as of December 31, 2016 14,477 (13,141 ) 1,336 Intangible assets acquired 5,656 - 5,656 Amortization of intangible assets - (1,289 ) (1,289 ) Balance as of December 31, 2017 20,133 (14,430 ) 5,703 Amortization of intangible assets - (1,312 ) (1,312 ) Balance as of December 31, 2018 $ 20,133 $ (15,742 ) $ 4,391
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Estimated amortization expense for each of the next five years and thereafter is as follows (In Thousands): 2019 $ 1,097 2020 914 2021 744 2022 576 2023 439 Thereafter 621 Total $ 4,391

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2018
Deposits [Abstract]
Schedule Sets Forth Interest Expense By Type Of Deposit [Table Text Block]	The following schedule sets forth interest expense by type of deposit: Years Ended December 31, 2018 2017 2016 (In Thousands) Checking and money market accounts $ 3,997 $ 2,033 $ 1,463 Savings accounts 115 102 88 Certificates of deposit 9,785 6,683 4,710 Totals $ 13,897 $ 8,818 $ 6,261
Deposits [Table Text Block]	A summary of deposit balances is as follows: December 31, 2018 2017 (In Thousands) Noninterest-bearing checking accounts $ 607,198 $ 571,360 Interest-bearing checking and money market accounts 1,040,471 1,005,519 Savings deposits 292,829 302,022 Retail certificates of deposit less than $250,000 591,822 504,912 Retail certificates of deposit greater than $250,000 88,562 53,843 $ 2,620,882 $ 2,437,656
Schedule of Maturities of Long-term Debt [Table Text Block]	Scheduled maturities of certificates of deposit at December 31, 2018, are as follows (In Thousands): 2019 $ 417,562 2020 130,756 2021 85,563 2022 33,184 2023 13,319 Thereafter - Total $ 680,384

Advances from Federal Home Lo_2

Advances from Federal Home Loan Bank (Tables)	12 Months Ended
	Dec. 31, 2018
Advances from Federal Home Loan Banks [Abstract]
Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block]	At year-end, advances from the FHLB were as follows: Principal Terms Advance Amount Range of Maturities Weighted (In Thousands) December 31, 2018 Single maturity fixed rate advances 59,000 January 2019 to March 2022 1.67 % Amortizable mortgage advances 1,213 August 2027 2.14 % Overnight advances 25,000 Overnight 2.45 % Fair value adj. on acquired balances (24 ) $ 85,189 December 31, 2017 Putable advances $ 5,000 March 2018 2.35 % Single maturity fixed rate advances 72,000 January 2018 to March 2022 1.46 % Amortizable mortgage advances 7,306 September 2018 to August 2027 1.85 % Fair value adj. on acquired balances (27 ) $ 84,279
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]	Estimated future minimum payments by fiscal year based on maturity date and current interest rates are as follows (In Thousands): 2019 $ 45,926 2020 21,563 2021 15,307 2022 219 2023 3,169 Thereafter 563 Total minimum payments 86,747 Less amounts representing interest (1,534 ) Less fair value adj. on acquired balances (24 ) Totals $ 85,189

Junior Subordinated Debenture_2

Junior Subordinated Debentures Owed to Unconsolidated Subsidiary Trust (Tables)	12 Months Ended
	Dec. 31, 2018
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust [Abstract]
Schedule of Subordinated Borrowing [Table Text Block]	A summary of all junior subordinated debentures issued by the Company to affiliates follows. These amounts represent the par value of the obligations owed to these affiliates, including the Company’s equity interest in the trusts. Junior subordinated debentures owed to the following affiliates were as follows: December 31, 2018 2017 (In Thousands) First Defiance Statutory Trust I due December 2035 $ 20,619 $ 20,619 First Defiance Statutory Trust II due June 2037 15,464 15,464 Total junior subordinated debentures owed to unconsolidated subsidiary Trusts $ 36,083 $ 36,083

Securities Sold Under Agreeme_2

Securities Sold Under Agreements to Repurchase and Other Short Term Borrowings (Tables)	12 Months Ended
	Dec. 31, 2018
Securities Sold Under Agreements to Repurchase and Other Short Term Borrowings [Abstract]
Securities Sold Under Agreements To Repurchase [Table Text Block]	Total securities sold under agreement to repurchase are summarized as follows: Years Ended December 31, 2018 2017 (In Thousands, Except Percentages) Securities sold under agreement to repurchase Amounts outstanding at year-end $ 5,741 $ 26,019 Year-end interest rate 0.31 % 0.20 % Average daily balance during year 8,911 23,337 Maximum month-end balance during the year 18,259 26,019 Average interest rate during the year 0.26 % 0.23 %
Schedule of Underlying Assets of Repurchase Agreements when Amount of Repurchase Agreements Exceeds 10 Percent of Assets [Table Text Block]	The remaining contractual maturity of the securities sold under agreements to repurchase in the consolidated balance sheets as of December 31, 2018 and 2017, is presented in the following tables. Overnight and Up to 30 30-90 Days Greater Total At December 31, 2018 (In Thousands) Repurchase agreements: Mortgage-backed securities – residential $ 4,199 $ - $ - $ - $ 4,199 Collateralized mortgage obligations 1,542 - - - 1,542 Total borrowings $ 5,741 $ - $ - $ - $ 5,741 Gross amount of recognized liabilities for repurchase agreements $ 5,741 Overnight and Up to 30 30-90 Days Greater Total At December 31, 2017 (In Thousands) Repurchase agreements: Mortgage-backed securities – residential $ 6,599 $ - $ - $ - $ 6,599 Collateralized mortgage obligations 19,420 - - - 19,420 Total borrowings $ 26,019 $ - $ - $ - $ 26,019 Gross amount of recognized liabilities for repurchase agreements $ 26,019

Other Noninterest Expense (Tabl

Other Noninterest Expense (Tables)	12 Months Ended
	Dec. 31, 2018
Other Expense, Nonoperating [Abstract]
Other Non Interest Expense [Table Text Block]	The following is a summary of other noninterest expense: Years Ended December 31, 2018 2017 2016 (In Thousands) Legal and other professional fees $ 3,328 $ 3,603 $ 2,902 Marketing 2,407 2,070 1,835 State financial institutions tax 2,118 1,819 1,781 OREO expenses and write-downs 742 177 244 Printing and office supplies 631 626 512 Amortization of intangibles 1,312 1,289 535 Postage 505 523 456 Check charge-offs and fraud losses 415 277 266 Credit and collection expense 379 359 303 Other 6,792 (1) 8,067 (2) 7,118 (3) Total other noninterest expense $ 18,629 $ 18,810 $ 15,952 1) Includes a credit of $806,000 for an accounting correction related to the Deferred Compensation Plan. See Note 19 for further details. 2) Includes $1.1 million of acquisition related expenses. 3) Includes $443,000 of acquisition related expenses and $300,000 of costs associated with termination of a lease agreement.

Postretirement Benefits (Tables

Postretirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]	Included in accumulated other comprehensive income at December 31, 2018, 2017 and 2016, are the following amounts that have not yet been recognized in net periodic benefit cost: December 31, 2018 2017 2016 (In Thousands) Unrecognized prior service cost $ 97 $ 39 $ 52 Unrecognized actuarial losses (86 ) 551 392 Total loss recognized in Accumulated Other 11 590 444 Income tax effect 80 (206 ) (155 ) Net loss recognized in Accumulated Other $ 91 $ 384 $ 289
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]	The plan is not currently funded. The following table summarizes benefit obligation and plan asset activity for the plan measured as of December 31 each year: December 31, 2018 2017 (In Thousands) Change in benefit obligation: Benefit obligation at beginning of year $ 3,194 $ 2,985 Service cost 55 58 Interest cost 105 117 Participant contribution 32 29 Plan amendments for acquisitions 72 - Actuarial (gains) / losses (632 ) 166 Benefits paid (184 ) (161 ) Benefit obligation at end of year 2,642 3,194 Change in fair value of plan assets: Balance at beginning of year - - Employer contribution 152 132 Participant contribution 32 29 Benefits paid (184 ) (161 ) Balance at end of year - - Funded status at end of year $ (2,642 ) $ (3,194 )
Schedule of Net Benefit Costs [Table Text Block]	Net periodic postretirement benefit cost includes the following components: Years Ended December 31, 2018 2017 2016 (In Thousands) Service cost-benefits attributable to service during the period $ 55 $ 58 $ 53 Interest cost on accumulated postretirement benefit obligation 105 117 128 Net amortization and deferral 18 19 30 Net periodic postretirement benefit cost 178 194 211 Net (gain) / loss during the year (632 ) 166 (184 ) Plan amendment for acquisition 72 - 12 Amortization of prior service cost and actuarial losses (18 ) (19 ) (30 ) Total recognized in comprehensive income (578 ) 147 (202 ) Total recognized in net periodic postretirement benefit $ (400 ) $ 341 $ 9
Assumptions Are Used In Determining Components Of Postretirement Benefit Obligation [Table Text Block]	The following assumptions were used in determining the components of the postretirement benefit obligation: 2018 2017 2016 Weighted average discount rates: Used to determine benefit obligations at December 31 4.00 % 3.50 % 4.00 % Used to determine net periodic postretirement benefit cost for years ended December 31 3.50 % 4.00 % 4.25 % Assumed health care cost trend rates at December 31: Health care cost trend rate assumed for next year 6.50 % 7.00 % 7.50 % Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 3.90 % 5.00 % 5.00 % Year that rate reaches ultimate trend rate 2075 2022 2022
Schedule of Expected Benefit Payments [Table Text Block]	The following benefits are expected to be paid over the next five years and in aggregate for the next five years thereafter. Because the plan is unfunded, the expected net benefits to be paid and the estimated Company contributions are the same amount. Expected to be Paid (In Thousands) 2019 $ 168 2020 181 2021 195 2022 209 2023 181 2024 through 2028 969
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]	Assumed health care cost trend rates have a significant effect on the amounts reported for the health care plans. A one-percentage-point change in assumed health care cost trend rates would have the following effect: One-Percentage-Point One-Percentage-Point Year Ended December 31, Year Ended December 31, 2018 2017 2018 2017 (In Thousands) Effect on total of service and interest cost $ 22 $ 25 $ (18 ) $ (21 ) Effect on postretirement benefit obligation 178 392 (153 ) (333 )

Regulatory Matters (Tables)

Regulatory Matters (Tables)	12 Months Ended
	Dec. 31, 2018
Regulatory Capital Requirements [Abstract]
Computation of Net Capital under Securities and Exchange Commission Regulation [Table Text Block]	The following schedule presents First Defiance consolidated and First Federal’s regulatory capital ratios as of December 31, 2018 and 2017 (Dollars in Thousands): December 31, 2018 Actual Minimum Required for Minimum Required to be Well Amount Ratio Amount Ratio(1) Amount Ratio CET1 Capital (to Risk-Weighted Assets) (2) Consolidated $ 303,860 11.00 % $ 124,339 4.5 % N/A N/A First Federal $ 322,520 11.68 % $ 124,225 4.5 % $ 179,436 6.5 % Tier 1 Capital (2) Consolidated $ 338,860 11.14 % $ 121,716 4.0 % N/A N/A First Federal $ 322,520 10.62 % $ 121,461 4.0 % $ 151,827 5.0 % Tier 1 Capital (to Risk Weighted Assets) (2) Consolidated $ 338,860 12.26 % $ 165,786 6.0 % N/A N/A First Federal $ 322,520 11.68 % $ 165,633 6.0 % $ 220,844 8.0 % Total Capital (to Risk Weighted Assets) (2) Consolidated $ 367,191 13.29 % $ 221,048 8.0 % N/A N/A First Federal $ 350,851 12.71 % $ 220,844 8.0 % $ 276,055 10.0 % (1) Excludes capital conservation buffer of 1.875% as of December 31, 2018. (2) Core capital is computed as a percentage of adjusted total assets of $3.04 billion for consolidated and for the Bank. Risk-based capital is computed as a percentage of total risk-weighted assets of $2.76 billion for consolidated and for the Bank. December 31, 2017 Actual Minimum Required for Minimum Required to be Well Amount Ratio Amount Ratio(1) Amount Ratio CET1 Capital (to Risk-Weighted Assets) (2) Consolidated $ 274,832 10.43 % $ 118,596 4.5 % N/A N/A First Federal $ 298,571 11.33 % $ 118,534 4.5 % $ 171,216 6.5 % Tier 1 Capital (2) Consolidated $ 309,832 10.80 % $ 114,773 4.0 % N/A N/A First Federal $ 298,571 10.43 % $ 114,539 4.0 % $ 143,173 5.0 % Tier 1 Capital (to Risk Weighted Assets) (2) Consolidated $ 309,832 11.76 % $ 158,128 6.0 % N/A N/A First Federal $ 298,571 11.33 % $ 158,046 6.0 % $ 210,728 8.0 % Total Capital (to Risk Weighted Assets) (2) Consolidated $ 336,515 12.77 % $ 210,838 8.0 % N/A N/A First Federal $ 325,254 12,.35 % $ 210,728 8.0 % $ 263,410 10.0 % (1) Excludes capital conservation buffer of 1.25% as of December 31, 2017. (2) Core capital is computed as a percentage of adjusted total assets of $2.87 billion for consolidated and $2.86 billion for the Bank. Risk-based capital is computed as a percentage of total risk-weighted assets of $2.64 billion for consolidated and $2.63 billion for the Bank.

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	The components of income tax expense are as follows: Years Ended December 31, 2018 2017 2016 (In Thousands) Current: Federal $ 9,538 $ 14,588 $ 13,125 State and local 207 181 244 Deferred 881 1,261 (615 ) Tax reform revaluation - 154 - $ 10,626 $ 16,184 $ 12,754
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	The effective tax rates differ from federal statutory rate applied to income before income taxes due to the following: Years Ended December 31, 2018 2017 2016 (In Thousands) Tax expense at statutory rate (21%-2018 35%-2017 and 2016) $ 11,944 $ 16,958 $ 14,559 Increases (decreases) in taxes from: State income tax – net of federal tax benefit 164 119 159 Tax exempt interest income, net of TEFRA (770 ) (1,218 ) (1,168 ) Bank owned life insurance (255 ) (1,212 ) (341 ) Captive insurance (325 ) (364 ) (414 ) BOLI surrender - 1,721 - Tax reform revaluation - 154 - Other (132 ) 26 (41 ) Totals $ 10,626 $ 16,184 $ 12,754
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	Significant components of First Defiance’s deferred federal income tax assets and liabilities are as follows: December 31, 2018 2017 (In Thousands) Deferred federal income tax assets: Allowance for loan losses $ 5,802 $ 5,415 Postretirement benefit costs 473 671 Deferred compensation 1,011 1,354 Impaired loans 1,154 1,432 Accrued vacation 11 123 Allowance for real estate held for sale losses 62 71 Deferred loan origination fees and costs 435 332 Accrued bonus 638 333 Net unrealized gains on available-for-sale securities 547 - Other 1,273 1,578 Total deferred federal income tax assets 11,406 11,309 Deferred federal income tax liabilities: FHLB stock dividends 1,558 1,558 Goodwill 4,584 4,377 Mortgage servicing rights 2,125 2,060 Fixed assets 2,046 1,039 Other intangible assets 778 990 Loan mark to market 7 5 Net unrealized gains on available-for-sale securities - 194 Prepaid expenses 550 539 Other 22 316 Total deferred federal income tax liabilities 11,670 11,078 Net deferred federal income tax asset/ (liability) $ (264 ) $ 231
Reconciliation Of Beginning And Ending Amount Of Unrecognized Tax Benefits [Table Text Block]	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (In Thousands): Balance at January 1, 2016 $ - Additions based on tax positions related to the current year - Additions for tax positions of prior years 398 Reductions for tax positions of prior years - Reductions due to the statute of limitations - Settlements - Balance at December 31, 2016 $ 398 Balance at January 1, 2017 $ 398 Additions based on tax positions related to the current year - Additions for tax positions of prior years - Reductions for tax positions of prior years - Reductions due to the statute of limitations - Settlements (398 ) Balance at December 31, 2017 $ - Balance at January 1, 2018 $ - Additions based on tax positions related to the current year - Additions for tax positions of prior years - Reductions for tax positions of prior years - Reductions due to the statute of limitations - Settlements - Balance at December 31, 2018 $ -

Stock Compensation Plans (Table

Stock Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	Following is activity under the plans during 2018: Options Weighted Weighted Aggregate Options outstanding, January 1, 2018 86,900 $ 10.81 Forfeited or cancelled - - Exercised (47,500 ) 8.15 Granted - - Options outstanding, December 31, 2018 39,400 $ 14.00 4.96 $ 414 Vested or expected to vest at December 31, 2018 39,400 $ 14.00 4.96 $ 414 Exercisable at December 31, 2018 23,900 $ 12.21 4.14 $ 294
Schedule Of Share Based Compensation Stock Options Plans [Table Text Block]	Information related to the stock option plans is as follows: Year Ended December 31, 2018 2017 2016 (In Thousands, except per share amounts) Intrinsic value of options exercised $ 893 $ 301 $ 752 Cash received from option exercises 111 198 714 Tax benefit realized from option exercises 28 54 165 Weighted average fair value of options granted $ - $ - $ 13.95
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]	Total expense of $ 2.0 million, 2.0 million and $ 1.3 million was recorded during the years ended December 31, 2018, 2017 and 2016, respectively, and approximately $ 961,000 and $ 774,000 is included within other liabilities at December 31, 2018 and 2017, respectively, related to the STIPs and LTIPs. Restricted Stock Units Stock Grants Weighted-Average Weighted-Average Grant Date Grant Date Unvested Shares Shares Fair Value Shares Fair Value Unvested at January 1, 2018 145,076 $ 20.26 21,072 $ 25.28 Granted 49,024 26.97 66,118 19.68 Vested (49,514 ) 16.15 (56,818 ) 17.51 Forfeited - - - - Unvested at December 31, 2018 144,586 $ 23.94 30,372 $ 28.48

Parent Company Statements (Tabl

Parent Company Statements (Tables)	12 Months Ended
	Dec. 31, 2018
Condensed Financial Information Disclosure [Abstract]
Condensed Balance Sheet [Table Text Block]	Condensed parent company financial statements, which include transactions with subsidiaries, are as follow: December 31, Statements of Financial Condition 2018 2017 (In Thousands) Assets Cash and cash equivalents $ 12,153 $ 8,860 Investment in banking subsidiary 398,922 377,546 Investment in non-bank subsidiaries 23,372 22,319 Other assets 1,723 1,157 Total assets $ 436,170 $ 409,882 Liabilities and stockholders’ equity: Subordinated debentures $ 36,083 $ 36,083 Accrued liabilities 498 513 Stockholders’ equity 399,589 373,286 Total liabilities and stockholders’ equity $ 436,170 $ 409,882
Condensed Income Statement [Table Text Block]	Years Ended December 31, Statements of Income 2018 2017 2016 (In Thousands) Dividends from subsidiaries $ 24,550 $ 15,800 $ 24,200 Interest expense (1,281 ) (1,090 ) (753 ) Other income 1 1 - Noninterest expense (831 ) (697 ) (644 ) Income before income taxes and equity in earnings of subsidiaries 22,439 14,014 22,803 Income tax credit (431 ) (605 ) (466 ) Income before equity in earnings of subsidiaries 22,870 14,619 23,269 Undistributed equity in earnings of subsidiaries 23,379 17,649 5,574 Net income 46,249 32,268 28,843 Other comprehensive income (loss) (2,412 ) 2 (3,407 ) Comprehensive income $ 43,837 $ 32,270 $ 25,436
Condensed Cash Flow Statement [Table Text Block]	Years Ended December 31, Statements of Cash Flows 2018 2017 2016 (In Thousands) Operating activities: Net income $ 46,249 $ 32,268 $ 28,843 Adjustments to reconcile net income to net cash (used in) provided by operating activities: Undistributed equity in earnings of subsidiaries (23,379 ) (17,649 ) (5,574 ) Change in other assets and liabilities (419 ) (358 ) 235 Net cash provided by (used in) operating activities 22,451 14,261 23,504 Investing activities: Cash paid for Commercial Bancshares - (12,340 ) - Capital contribution to subsidiary - (6,491 ) - Net cash used in investing activities - (18,831 ) - Financing activities: Repurchase of common stock (6,330 ) - (6,293 ) Cash dividends paid (13,043 ) (9,859 ) (7,890 ) Stock Options Exercised 111 199 714 Direct stock sales 104 73 66 Net cash used in financing activities (19,158 ) (9,587 ) (13,406 ) Net increase (decrease) in cash and cash equivalents 3,293 (14,157 ) 10,098 Cash and cash equivalents at beginning of year 8,860 23,017 12,919 Cash and cash equivalents at end of year $ 12,153 $ 8,860 $ 23,017

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The following table summarizes the financial assets measured at fair value on a recurring basis segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Assets and Liabilities Measured on a Recurring Basis December 31, 2018 Level 1 Level 2 Level 3 Total Fair (In Thousands) Available for sale securities: Obligations of U.S. Government corporations and agencies $ - $ 2,503 $ - $ 2,503 Mortgage-backed - residential - 74,710 - 74,710 REMICs - 2,709 - 2,709 Collateralized mortgage obligations - 101,461 - 101,461 Preferred stock - - - - Corporate bonds - 12,806 - 12,806 Obligations of state and political subdivisions - 99,887 99,887 Mortgage banking derivative - asset - 367 - 367 Mortgage banking derivative -liability - 73 - 73 December 31, 2017 Level 1 Level 2 Level 3 Total Fair (In Thousands) Available for sale securities: Obligations of U.S. Government corporations and agencies $ - $ 508 $ - $ 508 Mortgage-backed - residential - 59,269 - 59,269 REMICs - 1,065 - 1,065 Collateralized mortgage obligations - 93,876 - 93,876 Preferred stock 1 - - 1 Corporate bonds - 13,103 - 13,103 Obligations of state and political subdivisions - 92,828 92,828 Mortgage banking derivative - asset - 609 - 609 Mortgage banking derivative -liability - 11 - 11
Schedule of Fair Value, Assets Measured on Non Recurring Basis [Table Text Block]	The following table summarizes the financial assets measured at fair value on a non-recurring basis segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Assets and Liabilities Measured on a Non-Recurring Basis December 31, 2018 Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair (In Thousands) Impaired loans Commercial Real Estate $ - $ - $ 1,456 $ 1,456 Commercial 319 319 Total impaired loans - - 1,775 1,775 Mortgage servicing rights - 629 - 629 Real estate held for sale CRE - - 705 705 Total Real Estate held for sale - - 705 705 December 31, 2017 Level 1 Inputs Level 2 Inputs Level 3 Inputs Total Fair (In Thousands) Impaired loans Commercial Real Estate $ - $ - $ 1,787 $ 1,787 Commercial 2,817 2,817 Total impaired loans - - 4,604 4,604 Mortgage servicing rights - 534 - 534 Real estate held for sale CRE - - 227 227 Total Real Estate held for sale - - 227 227
Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]	For Level 3 assets and liabilities measured at fair value on a recurring or nonrecurring basis as of December 31, 2018, the significant unobservable inputs used in the fair value measurements were as follows: Fair Value Valuation Technique Unobservable Inputs Range of Weighted (Dollars in Thousands) Impaired Loans- Applies to all loan classes $ 1,775 Appraisals which utilize sales comparison, net income and cost approach Discounts for collection issues and changes in market conditions 10-13 % 10.86 % Real estate held for sale – Applies to all classes $ 705 Appraisals which utilize sales comparison, net income and cost approach Discounts for changes in market conditions 20 % 20 % For Level 3 assets and liabilities measured at fair value on a recurring or nonrecurring basis as of December 31, 2017, the significant unobservable inputs used in the fair value measurements were as follows: Fair Value Valuation Technique Unobservable Inputs Range of Weighted (Dollars in Thousands) Impaired Loans- Applies to all loan classes $ 4,604 Appraisals which utilize sales comparison, net income and cost approach Discounts for collection issues and changes in market conditions 10-20 % 11 % Real estate held for sale – Applies to all classes $ 227 Appraisals which utilize sales comparison, net income and cost approach Discounts for changes in market conditions 0 % 0 %
Fair Value, by Balance Sheet Grouping [Table Text Block]	FHLB advances with maturities greater than 90 days are valued based on discounted cash flow analysis, using interest rates currently being quoted for similar characteristics and maturities resulting in a Level 2 classification. The cost or value of any call or put options is based on the estimated cost to settle the option at December 31, 2018. Fair Value Measurements at December 31, 2018 Carrying Value Total Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents $ 98,962 $ 98,962 $ 98,962 $ - $ - Investment securities 294,602 294,602 - 294,602 - FHLB Stock 14,217 N/A N/A N/A N/A Loans, net, including loans 2,518,321 2,501,096 - 6,865 2,494,231 Accrued interest receivable 9,641 9,641 18 1,168 8,455 Financial Liabilities: Deposits $ 2,620,882 $ 2,613,965 $ 607,198 $ 2,006,767 $ - Advances from FHLB 85,189 84,281 - 84,281 - Securities sold under repurchase agreements 5,741 5,741 - 5,741 - Subordinated debentures 36,083 28,854 - - 28,854 Fair Value Measurements at December 31, 2017 Carrying Total Level 1 Level 2 Level 3 Financial Assets: Cash and cash equivalents $ 113,693 $ 113,693 $ 113,693 $ - $ - Investment securities 261,298 261,299 1 261,298 - FHLB Stock 15,992 N/A N/A N/A N/A Loans, net, including loans 2,332,465 2,315,791 - 10,830 2,304,961 Accrued interest receivable 8,706 8,706 13 917 7,776 Financial Liabilities: Deposits $ 2,437,656 $ 2,444,683 $ 571,360 $ 1,873,323 $ - Advances from FHLB 84,279 83,261 - 83,261 - Securities sold under repurchase agreements 26,019 26,019 - 26,019 - Subordinated debentures 36,083 35,385 - - 35,385

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position Carrying Value [Table Text Block]	The fair value of these mortgage banking derivatives are reflected by a derivative asset or a derivative liability. The table below provides data about the carrying values of these derivative instruments December 31, 2018 December 31, 2017 Assets (Liabilities) Assets (Liabilities) Derivative Derivative Carrying Carrying Net Carrying Carrying Carrying Net Carrying Value Value Value Value Value Value (In Thousands) Derivatives not designated as hedging instruments Mortgage Banking Derivatives $ 367 $ 73 $ 294 $ 609 $ 11 $ 598
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]	The table below provides data about the amount of gains and losses recognized in income on derivative instruments not designated as hedging instruments: Twelve Months Ended December 31, 2018 2017 2016 (In Thousands) Derivatives not designated as hedging instruments Mortgage Banking Derivatives – Gain (Loss) $ (304 ) $ 107 $ (67 )

Quarterly Consolidated Result_2

Quarterly Consolidated Results of Operations (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information [Table Text Block]	The following is a summary of the quarterly consolidated results of operations: Three Months Ended March 31 June 30 September 30 December 31 (In Thousands, Except Per Share Amounts) 2018 Interest income $ 28,905 $ 30,299 $ 31,963 $ 33,550 Interest expense 3,218 3,752 4,434 5,058 Net interest income 25,687 26,547 27,529 28,492 Provision for loan losses (1,095 ) 423 1,376 472 Net interest income after provision for loan losses 26,782 26,124 26,153 28,020 Gain on sale, call or write-down of securities - - 76 97 Noninterest income 10,703 10,214 9,846 8,272 Noninterest expense 23,251 22,665 22,286 21,210 Income before income taxes 14,234 13,673 13,789 15,179 Income taxes 2,497 2,564 2,483 3,082 Net income $ 11,737 $ 11,109 $ 11,306 $ 12,097 Earnings per common share: Basic $ 0.58 $ 0.54 $ 0.55 $ 0.60 Diluted $ 0.58 $ 0.54 $ 0.55 $ 0.59 Average shares outstanding: Basic 20,330 20,388 20,400 20,313 Diluted 20,438 20,492 20,467 20,404 Three Months Ended March 31 June 30 September 30 December 31 (In Thousands, Except Per Share Amounts) 2017 Interest income $ 24,036 $ 27,458 $ 28,081 $ 28,527 Interest expense 2,391 2,826 3,074 3,140 Net interest income 21,645 24,632 25,007 25,387 Provision for loan losses 55 2,118 462 314 Net interest income after provision for loan losses 21,590 22,514 24,545 25,073 Gain on sale, call or write-down of securities - 267 158 159 Noninterest income 10,549 9,873 9,337 9,738 Noninterest expense 23,142 20,630 20,440 21,139 Income before income taxes 8,997 12,024 13,600 13,831 Income taxes 3,857 3,677 4,219 4,431 Net income $ 5,140 $ 8,347 $ 9,381 $ 9,400 Earnings per common share: Basic $ 0.27 $ 0.41 $ 0.46 $ 0.47 Diluted $ 0.27 $ 0.41 $ 0.46 $ 0.46 Average shares outstanding: Basic 18,870 20,294 20,298 20,310 Diluted 18,980 20,408 20,418 20,444

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2018
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Other Comprehensive Income Loss Reclassification Adjustments Related To Securities Available For Sale [Table Text Block]	Reclassification adjustments related to the defined benefit postretirement medical plan are included in compensation and benefits in the accompanying consolidated condensed statements of income. Before Tax Tax Effect Net of Tax (In Thousands) Twelve months ended December 31, 2018: Securities available for sale and transferred securities: Change in net unrealized gain/(loss) during the period $ (3,356 ) $ (706 ) $ (2,650 ) Reclassification adjustment for net gains included in net income (173 ) (36 ) (137 ) Defined benefit postretirement medical plan: Net gain on defined benefit postretirement medical plan realized during the period 560 200 360 Reclassification adjustment for net amortization and deferral on defined benefit postretirement medical plan (included in compensation and benefits) 18 3 15 Total other comprehensive income $ (2,951 ) $ (539 ) $ (2,412 ) Before Tax Tax Effect Net of Tax (In Thousands) Twelve months ended December 31, 2017: Securities available for sale and transferred securities: Change in net unrealized gain/(loss) during the period $ 733 $ 256 $ 477 Reclassification adjustment for net gains included in net income (584 ) (204 ) (380 ) Defined benefit postretirement medical plan: Net gain on defined benefit postretirement medical plan realized during the period (166 ) (59 ) (107 ) Reclassification adjustment for net amortization and deferral on defined benefit postretirement medical plan (included in compensation and benefits) 19 7 12 Total other comprehensive income $ 2 $ - $ 2
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	Activity in accumulated other comprehensive income (loss), net of tax, was as follows: Accumulated Securities Post- Other Available retirement Comprehensive For Sale Benefit Income (In Thousands) Balance January 1, 2018 $ 601 $ (384 ) $ 217 Other comprehensive income before reclassifications (2,651 ) 360 (2,291 ) Amounts reclassified from accumulated other comprehensive loss (136 ) 15 (121 ) Net other comprehensive income during period (2,787 ) 375 (2,412 ) Reclassification adjustment upon adoption of ASU 2018-02 129 (82 ) 47 Balance December 31, 2018 $ (2,057 ) $ (91 ) $ (2,148 ) Balance January 1, 2017 $ 504 $ (289 ) $ 215 Other comprehensive income before reclassifications 477 (108 ) 369 Amounts reclassified from accumulated other comprehensive loss (380 ) 13 (367 ) Net other comprehensive income during period 97 (95 ) 2 Balance December 31, 2017 $ 601 $ (384 ) $ 217

Statement of Accounting Polic_4

Statement of Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2018
Buildings and improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	50 years
Buildings and improvements [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Furniture, fixtures and equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	15 years
Furniture, fixtures and equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years

Statement of Accounting Polic_5

Statement of Accounting Policies (Details Textual) - USD ($)	1 Months Ended		12 Months Ended
	Feb. 28, 2018	Feb. 24, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019
Property, Plant and Equipment [Line Items]
Cash and Due from Banks				$ 55,962,000	$ 58,693,000
Amortization Of Mortgage Servicing Rights Excluding Valuation Adjustments				$ 3,800,000	$ 3,700,000	$ 3,600,000
Percentage Of Revenue				8.60%
Percentage Of Consolidated Net Income				4.50%
Percentage Of Assets				0.70%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent				35.00%	35.00%
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years
Cumulative Effect on Retained Earnings, Net of Tax	$ 47,000			$ 0
Revenue from Wealth Management				821,000
Trust Income				2,091,000	$ 2,332,000	1,701,000
Gains (Losses) on Sales of Other Real Estate				(581,000)	56,000	300,000
Insurance Commissions and Fees				14,085,000	12,866,000	10,441,000
Minimum Amount of Loans To be Evaluated Individually for Impairment				250,000
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability				$ 0	$ 154,000	$ 0
Percentage of Loan to Value				80.00%
Other Non Interest Income [Member]
Property, Plant and Equipment [Line Items]
Gains (Losses) on Sales of Other Real Estate				$ 28,000,000,000
Deposit Account [Member]
Property, Plant and Equipment [Line Items]
Revenues				7,600,000
Credit and Debit Card [Member]
Property, Plant and Equipment [Line Items]
Revenues				4,100,000
New Renewal Policies [Member]
Property, Plant and Equipment [Line Items]
Insurance Commissions and Fees				13,100,000
Contigent Policies [Member]
Property, Plant and Equipment [Line Items]
Insurance Commissions and Fees				1,000,000
Scenario, Plan [Member]
Property, Plant and Equipment [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Accounting Standards Update 2016-02 [Member] | Subsequent Event [Member]
Property, Plant and Equipment [Line Items]
Operating Lease, Right-of-Use Asset							$ 8,800,000
Operating Lease, Liability							$ 9,300,000
Federal Reserve [Member]
Property, Plant and Equipment [Line Items]
Cash and Due from Banks				1,048,000
FHLB of Cincinnati [Member]
Property, Plant and Equipment [Line Items]
Balance Of Stock				14,200,000
FHLB of Indianapolis [Member]
Property, Plant and Equipment [Line Items]
Balance Of Stock				2,500
Federal Home Loan Bank [Member]
Property, Plant and Equipment [Line Items]
Cash and Due from Banks				$ 1,723,000
Core Deposit and Customer Relationship [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				20 years
Core Deposit and Customer Relationship [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				10 years

Business Combinations (Details)

Business Combinations (Details) - USD ($)	1 Months Ended
	Feb. 24, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash Consideration	$ 12,340,000
Equity - Dollar Value of Issued Shares	56,532,000
Fair Value of Total Consideration Transferred	68,872,000
Recognized Amounts of Identifiable Assets Acquired and Liabilities Assumed:
Cash and Cash Equivalents	35,411,000
Federal Funds Sold	2,769,000
Securities	4,338,000
Loans	285,448,000
FHLB Stock of Cincinnati and Other Stock	2,194,000
Office Properties and Equipment	5,256,000
Intangible Assets	4,900,000		$ 756,000
Bank-Owned Life Insurance	8,168,000
Accrued Interest Receivable and Other Assets	3,606,000
Deposits - Non-Interest Bearing	(56,061,000)
Deposits - Interest Bearing	(251,931,000)
Advances from FHLB	(1,403,000)
Accrued Interest Payable and Other Liabilities	(2,717,000)
Total Identifiable Net Assets	39,978,000
Goodwill	$ 28,894,000	$ 98,569,000	$ 98,569,000	$ 61,798,000

Business Combinations (Details

Business Combinations (Details 1) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net Interest Income	$ 33,550	$ 31,963	$ 30,299	$ 28,905	$ 28,527	$ 28,081	$ 27,458	$ 24,036	$ 124,717	$ 108,102	$ 87,383
Provision for loan losses	472	1,376	423	(1,095)	314	462	2,118	55	1,176	2,949	283
Non-Interest Income	28,020	26,153	26,124	26,782	25,073	24,545	22,514	21,590	107,079	93,722	78,660
Non-Interest Expense	21,210	22,286	22,665	23,251	21,139	20,440	20,630	23,142	89,412	85,351	71,093
Income Before Income Taxes	15,179	13,789	13,673	14,234	13,831	13,600	12,024	8,997	56,875	48,452	41,597
Income Tax Expense	$ 3,082	$ 2,483	$ 2,564	$ 2,497	$ 4,431	$ 4,219	$ 3,677	$ 3,857	$ 10,626	16,184	12,754
Net Income										4,600
Pro Forma [Member]
Net Interest Income										98,856	90,452
Provision for loan losses										2,949	753
Non-Interest Income										40,338	35,496
Non-Interest Expense										82,597	76,393
Income Before Income Taxes										53,648	48,802
Income Tax Expense										17,780	15,276
Net Income										$ 35,868	$ 33,526
Diluted Earnings Per Share										$ 3.51	$ 3.29

Business Combinations (Detail_2

Business Combinations (Details Textual)	Apr. 13, 2017USD ($)	Feb. 24, 2017USD ($)	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Goodwill		$ 28,894,000	$ 98,569,000	$ 98,569,000	$ 61,798,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		10 years
Payments to Acquire Businesses, Gross		$ 12,340,000
Business Acquisition, Pro Forma Net Income (Loss)				4,600,000
Noncash Merger Related Costs				3,700,000
Business Combination, Consideration Transferred		68,872,000
Stockholders' Equity Note, Stock Split, Conversion Ratio			2.3616
Labor and Related Expense			$ 52,566,000	49,847,000	40,187,000
Business Combination, Acquisition Related Costs				1,100,000	$ 443,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		4,900,000		756,000
Commercial Bancshares [Member]
Goodwill		28,900,000
Payments to Acquire Businesses, Gross			$ 12,300,000
Labor and Related Expense		2,800,000
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Assets		348,400,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		37,500,000
Business Combination, Acquisition Related Costs		$ 3,700,000
Stock Issued During Period, Shares, Acquisitions | shares			2,279,004
Business Combination Consideration Transferred Cash Per Shares | $ / shares			$ 51
Business Combinations Consideration Transferred In Shares Percentage			80.00%
Business Combinations Consideration Transferred In Cash percentage			20.00%
Corporate One Benefits Agency Inc [Member]
Goodwill				7,900,000
Business Combination, Consideration Transferred	$ 9,300,000
Business Combination, Contingent Consideration, Liability				2,300,000
Contingent Consideration Classified as Equity, Fair Value Disclosure				1,800,000
Corporate One Benefits Agency Inc [Member] | First Payment [Member]
Payments to Acquire Businesses, Gross	6,500,000
Corporate One Benefits Agency Inc [Member] | Second Payment [Member]
Payments to Acquire Businesses, Gross	500,000
Corporate One Benefits Agency Inc [Member] | Third Payment [Member]
Payments to Acquire Businesses, Gross	$ 2,300,000
Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				564,000
Non compete Intangible [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				$ 192,000

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic Earnings Per Share:
Net income attributable to First Defiance	$ 12,097	$ 11,306	$ 11,109	$ 11,737	$ 9,400	$ 9,381	$ 8,347	$ 5,140	$ 46,249	$ 32,268	$ 28,843
Less: Income allocated to participating securities									16	5	39
Net income allocated to common shareholders									$ 46,233	$ 32,263	$ 28,804
Weighted average common shares outstanding Including participating securities									20,358	19,950	17,960
Less: Participating securities									9	18	22
Average Shares	20,313	20,400	20,388	20,330	20,310	20,298	20,294	18,870	20,349	19,932	17,938
Basic earnings per common share	$ 0.60	$ 0.55	$ 0.54	$ 0.58	$ 0.47	$ 0.46	$ 0.41	$ 0.27	$ 2.27	$ 1.62	$ 1.61
Diluted Earnings Per Share:
Net income allocated to common shareholders									$ 46,233	$ 32,263	$ 28,804
Weighted average common shares outstanding For basic earnings per common share	20,404	20,467	20,492	20,438	20,444	20,418	20,408	18,980	20,349	19,932	17,938
Add: Dilutive effects of exercise of stock options									119	124	132
Average shares and dilutive potential common shares									20,468	20,056	18,070
Diluted earnings per common share	$ 0.59	$ 0.55	$ 0.54	$ 0.58	$ 0.46	$ 0.46	$ 0.41	$ 0.27	$ 2.26	$ 1.61	$ 1.60

Earnings Per Common Share (De_2

Earnings Per Common Share (Details Textual) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	20,468	20,056	18,070

Investment Securities (Details)

Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Available-for-sale
Available-for-Sale Securities, Amortized Cost	$ 296,681	$ 259,726
Available-for-Sale Securities, Gross Unrealized Gains	1,543	2,886
Available-for-Sale Securities, Gross Unrealized Losses	(4,148)	(1,962)
Available-for-Sale Securities, Amortized Cost	294,076	260,650
Held-to-Maturity
Held-to-Maturity Securities, Amortized Cost	526	648
Held-to-Maturity Securities, Gross Unrealized Gains	0	1
Held-to-Maturity Securities, Gross Unrealized Losses	0	0
Held-to-Maturity Securities, Fair Value	526	649
Obligations of U.S. government corporations and agencies [Member]
Available-for-sale
Available-for-Sale Securities, Amortized Cost	2,519	518
Available-for-Sale Securities, Gross Unrealized Gains	2	0
Available-for-Sale Securities, Gross Unrealized Losses	(18)	(10)
Available-for-Sale Securities, Amortized Cost	2,503	508
Mortgage-backed securities - residential [Member]
Available-for-sale
Available-for-Sale Securities, Amortized Cost	76,165	59,942
Available-for-Sale Securities, Gross Unrealized Gains	111	90
Available-for-Sale Securities, Gross Unrealized Losses	(1,566)	(763)
Available-for-Sale Securities, Amortized Cost	74,710	59,269
REMICs [Member]
Available-for-sale
Available-for-Sale Securities, Amortized Cost	2,712	1,072
Available-for-Sale Securities, Gross Unrealized Gains	4	0
Available-for-Sale Securities, Gross Unrealized Losses	(7)	(7)
Available-for-Sale Securities, Amortized Cost	2,709	1,065
Collateralized mortgage obligations [Member]
Available-for-sale
Available-for-Sale Securities, Amortized Cost	103,026	94,588
Available-for-Sale Securities, Gross Unrealized Gains	124	180
Available-for-Sale Securities, Gross Unrealized Losses	(1,689)	(892)
Available-for-Sale Securities, Amortized Cost	101,461	93,876
Preferred stock [Member]
Available-for-sale
Available-for-Sale Securities, Amortized Cost		0
Available-for-Sale Securities, Gross Unrealized Gains		1
Available-for-Sale Securities, Gross Unrealized Losses		0
Available-for-Sale Securities, Amortized Cost	0	1
Corporate bonds [Member]
Available-for-sale
Available-for-Sale Securities, Amortized Cost	12,910	12,914
Available-for-Sale Securities, Gross Unrealized Gains	44	189
Available-for-Sale Securities, Gross Unrealized Losses	(148)	0
Available-for-Sale Securities, Amortized Cost	12,806	13,103
Obligations of state and political subdivisions [Member]
Available-for-sale
Available-for-Sale Securities, Amortized Cost	99,349	90,692
Available-for-Sale Securities, Gross Unrealized Gains	1,258	2,426
Available-for-Sale Securities, Gross Unrealized Losses	(720)	(290)
Available-for-Sale Securities, Amortized Cost	99,887	92,828
Held-to-Maturity
Held-to-Maturity Securities, Amortized Cost	475	580
Held-to-Maturity Securities, Gross Unrealized Gains	0	0
Held-to-Maturity Securities, Gross Unrealized Losses	0	0
Held-to-Maturity Securities, Fair Value	475	580
FHLMC certificates [Member]
Held-to-Maturity
Held-to-Maturity Securities, Amortized Cost	8	10
Held-to-Maturity Securities, Gross Unrealized Gains	0	0
Held-to-Maturity Securities, Gross Unrealized Losses	0	0
Held-to-Maturity Securities, Fair Value	8	10
FNMA certificates [Member]
Held-to-Maturity
Held-to-Maturity Securities, Amortized Cost	31	41
Held-to-Maturity Securities, Gross Unrealized Gains	0	1
Held-to-Maturity Securities, Gross Unrealized Losses	0	0
Held-to-Maturity Securities, Fair Value	31	42
GNMA certificates [Member]
Held-to-Maturity
Held-to-Maturity Securities, Amortized Cost	12	17
Held-to-Maturity Securities, Gross Unrealized Gains	0	0
Held-to-Maturity Securities, Gross Unrealized Losses	0	0
Held-to-Maturity Securities, Fair Value	$ 12	$ 17

Investment Securities (Details

Investment Securities (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Available-for-sale, Due in one year or less, Amortized Cost	$ 771
Available-for-sale, Due after one year through five years, Amortized Cost	22,957
Available-for-sale, Due after five years through ten years, Amortized Cost	34,245
Available-for-sale, Due after ten years, Amortized Cost	56,805
Available-for-sale, MBS/CMO/REMIC, Amortized Cost	181,903
Available-for-sale, Amortized Cost	296,681
Available-for-sale, Due in one year or less, Fair Value	773
Available-for-sale, Due after one year through five years, Fair Value	22,969
Available-for-sale, Due after five years through ten years, Fair Value	34,904
Available-for-sale, Due after ten years, Fair Value	56,550
Available-for-sale, MBS/CMO/REMIC, Fair Value	178,880
Available for sale securities, Total Fair Value	294,076	$ 260,650
Held-to-maturity Securities, Due in one year or less, Amortized Cost	31
Held-to-maturity,Securities, Due after five years through ten years, Amortized Cost	444
Held-to-maturity, MBS, Amortized Cost	51
Held-to-maturity, Amortized Cost	526	648
Held-to-maturity Securities, Due after one year through five years, Fair Value	31
Held-to-maturity, Securites, Due after five years through ten years, Fair Value	444
Held-to-maturity, MBS, Fair Value	51
Held-to-Maturity Securities, Fair Value	$ 526	$ 649

Investment Securities (Detail_2

Investment Securities (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Held to maturity securities:
Held-to-maturity Securities, Duration of Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 8	$ 12
Held-to-maturity Securities, Duration of Unrealized Loss Position, Less than 12 Months, Gross Unrealized Loss	0	0
Held-to-maturity Securities, Duration of Unrealized Loss Position, Twelve Months or Longer, Fair Value	26	9
Held-to-maturity Securities, Duration of Unrealized Loss Position, 12 Months or Longer, Gross Unrealized Loss	0	0
Held-to-maturity Securities, Duration of Unrealized Loss Position, Fair Value	34	21
Held-to-maturity Securities, Duration of Unrealized Loss Position, Gross Unrealized Loss	0	0
Total temporarily impaired securities, Duration Unrealized Loss Position, Less Than Twelve Months, Fair Value	40,936	92,314
Total temporarily impaired securities, Duration of Unrealized Loss Position, Less Than 12 Months, Gross Unrealized Loss	(341)	(705)
Total temporarily impaired securities, Duration of Unrealized Loss Position, Twelve Months or Longer, Fair Value	137,125	43,729
Total temporarily impaired securities, Duration of Unrealized Loss Position, Twelve Months or Longer, Gross Unrealized Loss	(3,807)	(1,257)
Total temporarily impaired securities, Duration of Unrealized Loss Position, Fair Value	178,061	136,043
Total temporarily impaired securities, Duration of Unrealized Loss Position, Unrealized Loss	(4,148)	(1,962)
Mortgage-backed securities - residential [Member]
Available-for-sale securities, Duration of Unrealized Loss Position, Less than 12 Month, Fair Value	11,589	27,881
Available-for-sale Securities, Duration of Unrealized Loss Position, Less than 12 Month, Gross Unrealized Loss	(71)	(215)
Available-for-sale securities, Duration of Unrealized Loss Position, 12 Month or Longer, Fair Value	48,665	19,038
Available-for-sale Securities, Duration of Unrealized Loss Position, 12 Month or Longer, Gross Unrealized Loss	(1,495)	(548)
Available-for-sale securities, Total, Fair Value	60,254	46,919
Available-for-sale securities, Total, Unrealized Loss	(1,566)	(763)
REMICs [Member]
Available-for-sale securities, Duration of Unrealized Loss Position, Less than 12 Month, Fair Value	0	1,065
Available-for-sale Securities, Duration of Unrealized Loss Position, Less than 12 Month, Gross Unrealized Loss	0	(7)
Available-for-sale securities, Duration of Unrealized Loss Position, 12 Month or Longer, Fair Value	857	0
Available-for-sale Securities, Duration of Unrealized Loss Position, 12 Month or Longer, Gross Unrealized Loss	(7)	0
Available-for-sale securities, Total, Fair Value	857	1,065
Available-for-sale securities, Total, Unrealized Loss	(7)	(7)
Collateralized mortgage obligations [Member]
Available-for-sale securities, Duration of Unrealized Loss Position, Less than 12 Month, Fair Value	11,613	49,107
Available-for-sale Securities, Duration of Unrealized Loss Position, Less than 12 Month, Gross Unrealized Loss	(53)	(320)
Available-for-sale securities, Duration of Unrealized Loss Position, 12 Month or Longer, Fair Value	70,585	20,804
Available-for-sale Securities, Duration of Unrealized Loss Position, 12 Month or Longer, Gross Unrealized Loss	(1,636)	(572)
Available-for-sale securities, Total, Fair Value	82,198	69,911
Available-for-sale securities, Total, Unrealized Loss	(1,689)	(892)
Corporate bonds [Member]
Available-for-sale securities, Duration of Unrealized Loss Position, Less than 12 Month, Fair Value	5,752
Available-for-sale Securities, Duration of Unrealized Loss Position, Less than 12 Month, Gross Unrealized Loss	(148)
Available-for-sale securities, Duration of Unrealized Loss Position, 12 Month or Longer, Fair Value	0
Available-for-sale Securities, Duration of Unrealized Loss Position, 12 Month or Longer, Gross Unrealized Loss	0
Available-for-sale securities, Total, Fair Value	5,752
Available-for-sale securities, Total, Unrealized Loss	(148)
Obligations of state and political subdivisions [Member]
Available-for-sale securities, Duration of Unrealized Loss Position, Less than 12 Month, Fair Value	11,974	14,249
Available-for-sale Securities, Duration of Unrealized Loss Position, Less than 12 Month, Gross Unrealized Loss	(69)	(163)
Available-for-sale securities, Duration of Unrealized Loss Position, 12 Month or Longer, Fair Value	16,492	3,370
Available-for-sale Securities, Duration of Unrealized Loss Position, 12 Month or Longer, Gross Unrealized Loss	(651)	(127)
Available-for-sale securities, Total, Fair Value	28,466	17,619
Available-for-sale securities, Total, Unrealized Loss	(720)	(290)
Obligations of U.S. government corporations and agencies [Member]
Available-for-sale securities, Duration of Unrealized Loss Position, Less than 12 Month, Fair Value	0	0
Available-for-sale Securities, Duration of Unrealized Loss Position, Less than 12 Month, Gross Unrealized Loss	0	0
Available-for-sale securities, Duration of Unrealized Loss Position, 12 Month or Longer, Fair Value	500	508
Available-for-sale Securities, Duration of Unrealized Loss Position, 12 Month or Longer, Gross Unrealized Loss	(18)	(10)
Available-for-sale securities, Total, Fair Value	500	508
Available-for-sale securities, Total, Unrealized Loss	$ (18)	$ (10)

Investment Securities (Detail_3

Investment Securities (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Proceeds	$ 5,503	$ 34,248	$ 14,871
Gross realized gains	178	665	509
Gross realized losses	$ (5)	$ (81)	$ 0

Investment Securities (Detail_4

Investment Securities (Details Textual)	12 Months Ended
	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Dec. 31, 2016USD ($)
Security Owned and Pledged as Collateral Carrying Value	$ 143,900,000	$ 135,400,000
Investment Portfolio, Number of Securities	438
Investment Portfolio, Number of Securities, Unrealized Loss	177
Realized Investment Gains (Losses)	$ 173,000	584,000	$ 509,000
Realized Investment Gains Losses, Net of Tax	$ 136,000	$ 380,000	$ 331,000
Investment Portfolio Single Security	10.00%

Commitments and Contingent Li_3

Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fixed Rate, Commitments to make loans	$ 44,352	$ 42,458
Fixed Rate, Unused lines of credit	7,523	6,245
Fixed Rate, Standby letters of credit	0	0
Fixed Rate, Total	51,875	48,703
Variable Rate, Commitments to make loans	114,308	161,778
Variable Rate, Unused lines of credit	382,189	408,831
Variable Rate, Standby letters of credit	7,239	7,605
Variable Rate, Total	$ 503,736	$ 578,214

Commitments and Contingent Li_4

Commitments and Contingent Liabilities (Details Textual) $ in Millions	12 Months Ended
	Dec. 31, 2018USD ($)
Commitments and Loans, Available to Sell	$ 8.6
Loan Commitments Maturities Range Description	less than 1 year to 30 years.
Maximum [Member]
Loan Commitments Interest Rate	18.00%
Minimum [Member]
Loan Commitments Interest Rate	3.25%

Loans (Details)

Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Real Estate:
Real Estate	$ 1,993,268	$ 1,775,559
Other Loans:
Total loans	2,665,402	2,466,267
Deduct:
Undisbursed loan funds	(123,293)	(115,972)
Net deferred loan origination fees and costs	(2,070)	(1,582)
Allowance for loan loss	(28,331)	(26,683)	$ (25,884)	$ (25,382)
Totals	2,511,708	2,322,030
Other Loan [Member]
Other Loans:
Total loans	672,134	690,708
One to Four Family Residential Real Estate [Member]
Real Estate:
Real Estate	322,686	274,862
Multi Family Residential [Member]
Real Estate:
Real Estate	278,358	248,092
Commercial Real Estate [Member]
Real Estate:
Real Estate	1,126,452	987,129
Construction Loans [Member]
Real Estate:
Real Estate	265,772	265,476
Commercial Loan [Member]
Other Loans:
Total loans	509,577	526,142
Home Equity and Home Improvement [Member]
Other Loans:
Total loans	128,152	135,457
Consumer finance [Member]
Other Loans:
Total loans	$ 34,405	$ 29,109

Loans (Details 1)

Loans (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Allowance	$ 26,683	$ 25,884	$ 25,382
Charge-Offs	(2,874)	(3,449)	(1,419)
Recoveries	3,346	1,299	1,638
Provisions	1,176	2,949	283
Ending Allowance	28,331	26,683	25,884
One to Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Allowance	2,532	2,627	3,212
Charge-Offs	(261)	(279)	(350)
Recoveries	131	115	166
Provisions	479	69	(401)
Ending Allowance	2,881	2,532	2,627
Multi Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Allowance	2,702	2,228	2,151
Charge-Offs	0	0	0
Recoveries	57	32	0
Provisions	342	442	77
Ending Allowance	3,101	2,702	2,228
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Allowance	10,354	10,625	11,772
Charge-Offs	(1,387)	(429)	(92)
Recoveries	720	657	923
Provisions	2,354	(499)	(1,978)
Ending Allowance	12,041	10,354	10,625
Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Allowance	647	450	517
Charge-Offs	0	0	0
Recoveries	0	0	0
Provisions	35	197	(67)
Ending Allowance	682	647	450
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Allowance	7,965	7,361	5,255
Charge-Offs	(724)	(2,301)	(615)
Recoveries	2,221	243	335
Provisions	(2,181)	2,662	2,386
Ending Allowance	7,281	7,965	7,361
Home Equity and Improvement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Allowance	2,255	2,386	2,304
Charge-Offs	(269)	(301)	(268)
Recoveries	191	167	150
Provisions	(151)	3	200
Ending Allowance	2,026	2,255	2,386
Consumer Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning Allowance	228	207	171
Charge-Offs	(233)	(139)	(94)
Recoveries	26	85	64
Provisions	298	75	66
Ending Allowance	$ 319	$ 228	$ 207

Loans (Details 2)

Loans (Details 2) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 595	$ 758
Collectively evaluated for impairment	27,736	25,925
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	28,331	26,683
Loans:
Loans individually evaluated for impairment	45,940	56,608
Loans collectively evaluated for impairment	2,500,222	2,296,053
Loans acquired with deteriorated credit quality	2,331	3,828
Total ending loans balance	2,548,493	2,356,489
One to Four Family Residential Real Estate [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	175	167
Collectively evaluated for impairment	2,706	2,365
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	2,881	2,532
Loans:
Loans individually evaluated for impairment	6,774	6,910
Loans collectively evaluated for impairment	315,385	267,377
Loans acquired with deteriorated credit quality	1,012	1,069
Total ending loans balance	323,171	275,356
Multi Family Residential Real Estate [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	3	7
Collectively evaluated for impairment	3,098	2,695
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	3,101	2,702
Loans:
Loans individually evaluated for impairment	1,347	2,278
Loans collectively evaluated for impairment	277,105	245,823
Loans acquired with deteriorated credit quality	296	301
Total ending loans balance	278,748	248,402
Commercial Real Estate [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	95	118
Collectively evaluated for impairment	11,946	10,236
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	12,041	10,354
Loans:
Loans individually evaluated for impairment	26,334	31,821
Loans collectively evaluated for impairment	1,102,355	956,238
Loans acquired with deteriorated credit quality	846	2,121
Total ending loans balance	1,129,535	990,180
Construction Loans [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	682	647
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	682	647
Loans:
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	142,096	149,174
Loans acquired with deteriorated credit quality	0	0
Total ending loans balance	142,096	149,174
Commercial Loan [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	79	187
Collectively evaluated for impairment	7,202	7,778
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	7,281	7,965
Loans:
Loans individually evaluated for impairment	10,477	14,373
Loans collectively evaluated for impairment	500,730	513,218
Loans acquired with deteriorated credit quality	177	337
Total ending loans balance	511,384	527,928
Home Equity and Home Improvement [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	242	279
Collectively evaluated for impairment	1,784	1,976
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	2,026	2,255
Loans:
Loans individually evaluated for impairment	963	1,176
Loans collectively evaluated for impairment	128,065	135,098
Loans acquired with deteriorated credit quality	0	0
Total ending loans balance	129,028	136,274
Consumer Finance [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	1	0
Collectively evaluated for impairment	318	228
Acquired with deteriorated credit quality	0	0
Total ending allowance balance	319	228
Loans:
Loans individually evaluated for impairment	45	50
Loans collectively evaluated for impairment	34,486	29,125
Loans acquired with deteriorated credit quality	0	0
Total ending loans balance	$ 34,531	$ 29,175

Loans (Details 3)

Loans (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	$ 49,182	$ 47,401	$ 32,833
Interest Income Recognized	1,800	1,417	1,675
Cash Basis Income Recognized	1,766	1,124	1,558
Residential Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	4,704	3,811	3,954
Interest Income Recognized	151	138	244
Cash Basis Income Recognized	150	138	237
Residential Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	2,354	3,038	3,133
Interest Income Recognized	133	138	211
Cash Basis Income Recognized	126	138	210
Total Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	7,058	6,849	7,087
Interest Income Recognized	284	276	455
Cash Basis Income Recognized	276	276	447
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	0	0	0
Interest Income Recognized	0	0	0
Cash Basis Income Recognized	0	0	0
Multi Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	1,644	2,471	3,946
Interest Income Recognized	90	58	124
Cash Basis Income Recognized	89	58	123
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	9,992	10,592	6,925
Interest Income Recognized	234	110	203
Cash Basis Income Recognized	221	109	183
Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	2,620	3,768	5,351
Interest Income Recognized	94	140	411
Cash Basis Income Recognized	93	133	407
Agriculture Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	13,827	9,667	2,283
Interest Income Recognized	575	472	128
Cash Basis Income Recognized	575	229	68
Commercial Real Estate Other Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	1,304	1,603	1,632
Interest Income Recognized	106	76	71
Cash Basis Income Recognized	106	70	70
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	27,743	25,630	16,191
Interest Income Recognized	1,009	798	813
Cash Basis Income Recognized	995	541	728
Commercial Working Capital [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	8,047	5,235	1,606
Interest Income Recognized	256	129	109
Cash Basis Income Recognized	245	123	90
Commercial Loans Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	3,501	5,940	2,393
Interest Income Recognized	119	109	81
Cash Basis Income Recognized	119	79	79
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	11,548	11,175	3,999
Interest Income Recognized	375	238	190
Cash Basis Income Recognized	364	202	169
Home Equity and Improvement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	1,150	1,217	1,543
Interest Income Recognized	38	43	85
Cash Basis Income Recognized	38	43	83
Consumer Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Balance	39	59	67
Interest Income Recognized	4	4	8
Cash Basis Income Recognized	$ 4	$ 4	$ 8

Loans (Details 4)

Loans (Details 4) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	$ 37,478	$ 51,731
Recorded Investment, With no allowance		35,947	48,548
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	11,178	8,812
Recorded Investment, With an Allowance		9,993	8,060
Allowance for Loan Losses Allocated, With an Allowance		595	758
Residential Owner Occupied [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	901	2,507
Recorded Investment, With no allowance		775	2,364
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	3,926	1,841
Recorded Investment, With an Allowance		3,884	1,814
Allowance for Loan Losses Allocated, With an Allowance		148	137
Residential Non Owner Occupied [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	950	1,711
Recorded Investment, With no allowance		955	1,708
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	1,152	1,031
Recorded Investment, With an Allowance		1,160	1,024
Allowance for Loan Losses Allocated, With an Allowance		27	30
One To Four Family Residential Real Estate [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	1,851	4,218
Recorded Investment, With no allowance		1,730	4,072
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	5,078	2,872
Recorded Investment, With an Allowance		5,044	2,838
Allowance for Loan Losses Allocated, With an Allowance		175	167
Multi Family Residential Real Estate [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	1,296	2,095
Recorded Investment, With no allowance		1,302	2,102
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	44	175
Recorded Investment, With an Allowance		44	176
Allowance for Loan Losses Allocated, With an Allowance		3	7
Commercial Real Estate Owner Occupied [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	7,464	12,273
Recorded Investment, With no allowance		6,202	11,804
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	2,419	2,007
Recorded Investment, With an Allowance		1,935	1,546
Allowance for Loan Losses Allocated, With an Allowance		38	44
Commercial Real Estate Non Owner Occupied [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	1,824	3,085
Recorded Investment, With no allowance		1,659	2,925
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	350	651
Recorded Investment, With an Allowance		353	593
Allowance for Loan Losses Allocated, With an Allowance		16	28
Agriculture Land [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	14,915	13,029
Recorded Investment, With no allowance		14,994	13,185
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	37	293
Recorded Investment, With an Allowance		38	292
Allowance for Loan Losses Allocated, With an Allowance		2	14
Commercial Real Estate Other Receivables [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	464	981
Recorded Investment, With no allowance		462	768
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	1,107	909
Recorded Investment, With an Allowance		691	708
Allowance for Loan Losses Allocated, With an Allowance		39	32
Commercial Real Estate [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	24,667	29,368
Recorded Investment, With no allowance		23,317	28,682
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	3,913	3,860
Recorded Investment, With an Allowance		3,017	3,139
Allowance for Loan Losses Allocated, With an Allowance		95	118
Construction [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	0	0
Recorded Investment, With no allowance		0	0
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	0	0
Recorded Investment, With an Allowance		0	0
Allowance for Loan Losses Allocated, With an Allowance		0	0
Commercial Working Capital [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	7,569	5,462
Recorded Investment, With no allowance		7,498	5,422
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	525	447
Recorded Investment, With an Allowance		528	449
Allowance for Loan Losses Allocated, With an Allowance		55	77
Commercial Loans Other [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	2,095	9,916
Recorded Investment, With no allowance		2,100	7,644
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	560	854
Recorded Investment, With an Allowance		352	858
Allowance for Loan Losses Allocated, With an Allowance		24	110
Commercial Loan [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	9,664	15,378
Recorded Investment, With no allowance		9,598	13,066
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	1,085	1,301
Recorded Investment, With an Allowance		880	1,307
Allowance for Loan Losses Allocated, With an Allowance		79	187
Home Equity and Improvement [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	0	630
Recorded Investment, With no allowance		0	584
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	1,013	596
Recorded Investment, With an Allowance		963	592
Allowance for Loan Losses Allocated, With an Allowance		242	279
Consumer Finance [Member]
Impaired loans
Unpaid Principal Balance, With no allowance	[1]	0	42
Recorded Investment, With no allowance		0	42
Allowance for Loan Losses Allocated, With no allowance		0	0
Unpaid Principal Balance, With an Allowance	[1]	45	8
Recorded Investment, With an Allowance		45	8
Allowance for Loan Losses Allocated, With an Allowance		$ 1	$ 0
[1]	Presented gross of charge offs

Loans (Details 5)

Loans (Details 5) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	$ 19,016	$ 30,715
Loans over 90 days past due and still accruing	0	0
Total non-performing loans	19,016	30,715
Real estate and other assets held for sale	1,205	1,532
Total non-performing assets	20,221	32,247
Troubled debt restructuring, still accruing	$ 11,573	$ 13,770

Loans (Details 6)

Loans (Details 6) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	$ 2,534,997	$ 2,343,042
Total Past Due	13,496	13,447
Total Non Accrual	19,002	30,703
Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,966	5,326
Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,697	3,098
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	8,833	5,023
Residential Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	199,664	175,139
Total Past Due	3,110	3,081
Total Non Accrual	3,266	2,510
Residential Owner Occupied [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	887	821
Residential Owner Occupied [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	821	1,033
Residential Owner Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,402	1,227
Residential Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	119,988	96,400
Total Past Due	409	736
Total Non Accrual	363	520
Residential Non Owner Occupied [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	64	495
Residential Non Owner Occupied [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	180	8
Residential Non Owner Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	165	233
One To Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	319,652	271,539
Total Past Due	3,519	3,817
Total Non Accrual	3,629	3,030
One To Four Family Residential Real Estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	951	1,316
One To Four Family Residential Real Estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,001	1,041
One To Four Family Residential Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,567	1,460
Multi Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	278,748	247,980
Total Past Due	0	422
Total Non Accrual	102	128
Multi Family Residential Real Estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	422
Multi Family Residential Real Estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Multi Family Residential Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	416,879	393,125
Total Past Due	490	1,651
Total Non Accrual	4,377	10,775
Commercial Real Estate Owner Occupied [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	52	195
Commercial Real Estate Owner Occupied [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	300	188
Commercial Real Estate Owner Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	138	1,268
Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	534,823	403,656
Total Past Due	125	516
Total Non Accrual	620	2,431
Commercial Real Estate Non Owner Occupied [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	6	1
Commercial Real Estate Non Owner Occupied [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	119	91
Commercial Real Estate Non Owner Occupied [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	424
Agriculture Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	129,040	131,753
Total Past Due	2,935	478
Total Non Accrual	5,253	4,144
Agriculture Land [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	66	412
Agriculture Land [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Agriculture Land [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	2,869	66
Commercial Real Estate Other Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	45,232	58,784
Total Past Due	11	217
Total Non Accrual	0	734
Commercial Real Estate Other Receivable [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	11	13
Commercial Real Estate Other Receivable [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Commercial Real Estate Other Receivable [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	204
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	1,125,974	987,318
Total Past Due	3,561	2,862
Total Non Accrual	10,250	18,084
Commercial Real Estate [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	135	621
Commercial Real Estate [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	419	279
Commercial Real Estate [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,007	1,962
Construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	142,096	149,174
Total Past Due	0	0
Total Non Accrual	0	0
Construction [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Construction [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Construction [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	0
Commercial Working Capital [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	217,832	233,632
Total Past Due	4,106	2,242
Total Non Accrual	4,021	2,369
Commercial Working Capital [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	268	102
Commercial Working Capital [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	0	1,264
Commercial Working Capital [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	3,838	876
Commercial Loans Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	289,125	291,455
Total Past Due	321	599
Total Non Accrual	480	6,474
Commercial Loans Other [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	32	82
Commercial Loans Other [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	54	0
Commercial Loans Other [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	235	517
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	506,957	525,087
Total Past Due	4,427	2,841
Total Non Accrual	4,501	8,843
Commercial Loan [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	300	184
Commercial Loan [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	54	1,264
Commercial Loan [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	4,073	1,393
Consumer Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	34,224	28,800
Total Past Due	307	375
Total Non Accrual	126	27
Consumer Finance [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	134	293
Consumer Finance [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	77	80
Consumer Finance [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	96	2
Home Equity and Improvement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	127,346	133,144
Total Past Due	1,682	3,130
Total Non Accrual	394	591
Home Equity and Improvement [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	1,446	2,490
Home Equity and Improvement [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	146	434
Home Equity and Improvement [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Past Due	$ 90	$ 206

Loans (Details 7)

Loans (Details 7) - TDRs [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)Number	Dec. 31, 2017USD ($)Number	Dec. 31, 2016USD ($)Number
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	56	64	44
Troubled Debt Restructurings, Recorded Investment | $	$ 5,910	$ 8,913	$ 5,632
Residential Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	18	24	17
Troubled Debt Restructurings, Recorded Investment | $	$ 980	$ 982	$ 778
Residential Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	4	5	5
Troubled Debt Restructurings, Recorded Investment | $	$ 189	$ 193	$ 494
Multi Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	0	0	2
Troubled Debt Restructurings, Recorded Investment | $	$ 0	$ 0	$ 1,885
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	12	2	0
Troubled Debt Restructurings, Recorded Investment | $	$ 1,639	$ 149	$ 0
Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	1	1	5
Troubled Debt Restructurings, Recorded Investment | $	$ 42	$ 262	$ 974
Agriculture Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	0	5	1
Troubled Debt Restructurings, Recorded Investment | $	$ 0	$ 1,700	$ 45
Commercial Real Estate Other Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	0	2	1
Troubled Debt Restructurings, Recorded Investment | $	$ 0	$ 153	$ 348
Commercial Working Capital [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	5	7	1
Troubled Debt Restructurings, Recorded Investment | $	$ 2,898	$ 1,475	$ 226
Commercial Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	1	7	1
Troubled Debt Restructurings, Recorded Investment | $	$ 44	$ 3,833	$ 587
Home Equity and Home Improvement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	7	6	9
Troubled Debt Restructurings, Recorded Investment | $	$ 89	$ 152	$ 281
Consumer Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings, Number of Loans | Number	8	5	2
Troubled Debt Restructurings, Recorded Investment | $	$ 29	$ 14	$ 14

Loans (Details 8)

Loans (Details 8) - Subsequently Defaulted [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)Number	Dec. 31, 2017USD ($)Number	Dec. 31, 2016USD ($)Number
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	7	0	1
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 2,856	$ 0	$ 205
Residential Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	1	0	0
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 76	$ 0	$ 0
Residential Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	1	0	0
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 45	$ 0	$ 0
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	0	0	0
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 0	$ 0	$ 0
Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	0	0	1
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 0	$ 0	$ 205
Agriculture Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	0	0	0
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 0	$ 0	$ 0
Commercial Real Estate Other Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	0	0	0
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 0	$ 0	$ 0
Commercial Working Capital [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	3	0	0
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 2,644	$ 0	$ 0
Commercial Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	1	0	0
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 30	$ 0	$ 0
Home Equity and Home Improvement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	1	0	0
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 61	$ 0	$ 0
Consumer Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings That Subsequently Defaulted, Number of Loans | Number	0	0	0
Troubled Debt Restructurings That Subsequently Defaulted, Recorded Investment | $	$ 0	$ 0	$ 0

Loans (Details 9)

Loans (Details 9) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	$ 2,548,493	$ 2,356,489
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	2,089,444	1,901,149
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	27,851	32,539
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	51,040	59,667
Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	380,158	363,134
Residential Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	202,774	178,220
Residential Owner Occupied [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	9,419	7,534
Residential Owner Occupied [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	91	99
Residential Owner Occupied [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	3,130	2,367
Residential Owner Occupied [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Residential Owner Occupied [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	190,134	168,220
Residential Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	120,397	97,136
Residential Non Owner Occupied [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	109,885	85,802
Residential Non Owner Occupied [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	700	935
Residential Non Owner Occupied [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	3,087	3,835
Residential Non Owner Occupied [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Residential Non Owner Occupied [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	6,725	6,564
One To Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	323,171	275,356
One To Four Family Residential Real Estate [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	119,304	93,336
One To Four Family Residential Real Estate [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	791	1,034
One To Four Family Residential Real Estate [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	6,217	6,202
One To Four Family Residential Real Estate [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
One To Four Family Residential Real Estate [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	196,859	174,784
Multi Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	278,748	248,402
Multi Family Residential Real Estate [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	276,594	242,969
Multi Family Residential Real Estate [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	2,503
Multi Family Residential Real Estate [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	2,047	2,819
Multi Family Residential Real Estate [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Multi Family Residential Real Estate [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	107	111
Commercial Real Estate Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	417,368	394,776
Commercial Real Estate Owner Occupied [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	402,008	370,613
Commercial Real Estate Owner Occupied [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	5,724	10,432
Commercial Real Estate Owner Occupied [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	9,547	13,575
Commercial Real Estate Owner Occupied [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Commercial Real Estate Owner Occupied [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	89	156
Commercial Real Estate Non Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	534,946	404,172
Commercial Real Estate Non Owner Occupied [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	529,842	395,264
Commercial Real Estate Non Owner Occupied [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	2,807	3,464
Commercial Real Estate Non Owner Occupied [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	2,297	5,444
Commercial Real Estate Non Owner Occupied [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Commercial Real Estate Non Owner Occupied [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Agriculture Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	131,976	132,231
Agriculture Land [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	111,595	114,776
Agriculture Land [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	4,023	2,639
Agriculture Land [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	16,358	14,816
Agriculture Land [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Agriculture Land [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Commercial Real Estate Other Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	45,245	59,001
Commercial Real Estate Other Receivable [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	42,189	56,133
Commercial Real Estate Other Receivable [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	730	165
Commercial Real Estate Other Receivable [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	1,244	1,788
Commercial Real Estate Other Receivable [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Commercial Real Estate Other Receivable [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	1,082	915
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	1,129,535	990,180
Commercial Real Estate [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	1,085,634	936,786
Commercial Real Estate [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	13,284	16,700
Commercial Real Estate [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	29,446	35,623
Commercial Real Estate [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Commercial Real Estate [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	1,171	1,071
Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	142,096	149,174
Construction Loans [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	122,775	125,519
Construction Loans [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	219	1,254
Construction Loans [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Construction Loans [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Construction Loans [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	19,102	22,401
Commercial Working Capital [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	221,938	235,874
Commercial Working Capital [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	205,903	222,526
Commercial Working Capital [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	6,546	7,605
Commercial Working Capital [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	9,489	5,743
Commercial Working Capital [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Commercial Working Capital [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Commercial Loans Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	289,446	292,054
Commercial Loans Other [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	279,234	280,013
Commercial Loans Other [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	7,011	3,443
Commercial Loans Other [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	3,201	8,598
Commercial Loans Other [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Commercial Loans Other [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	511,384	527,928
Commercial Loan [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	485,137	502,539
Commercial Loan [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	13,557	11,048
Commercial Loan [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	12,690	14,341
Commercial Loan [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Commercial Loan [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Home Equity and Home Improvement [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	129,028	136,274
Home Equity and Home Improvement [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Home Equity and Home Improvement [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Home Equity and Home Improvement [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	434	600
Home Equity and Home Improvement [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Home Equity and Home Improvement [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	128,594	135,674
Consumer Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	34,531	29,175
Consumer Finance [Member] | Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Consumer Finance [Member] | Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Consumer Finance [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	206	82
Consumer Finance [Member] | Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	0	0
Consumer Finance [Member] | Not Graded [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	$ 34,325	$ 29,093

Loans (Details 10)

Loans (Details 10) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	$ 2,331	$ 3,828
Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	2,471	4,793
Notes Receivable Net Acquired With Recorded Investment Net Of Allowance	2,331	3,828
One To Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	1,012	1,069
One To Four Family Residential Real Estate [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	1,045	1,154
Multi Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	296	301
Multi Family Residential Real Estate [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	300	309
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	846	2,121
Commercial Real Estate [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	899	2,921
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	177	337
Commercial Loan [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	227	407
Consumer [Member] | Loan Purchase [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Notes Receivable Net Acquired With Deteriorated Credit Quality	$ 0	$ 2

Loans (Details 11)

Loans (Details 11) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at January 1	$ 804	$ 0
New Loans Purchased	0	1,018
Accretion of Income	(139)	(163)
Reclassifications from Non-accretable	0	0
Charge-off of Accretable Yield	(197)	(8)
Balance at December 31	$ 468	$ 804

Loans (Details 12)

Loans (Details 12) $ in Thousands	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$ 7,233
One To Four Family Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	1,720
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	4,724
Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	785
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$ 4

Loans (Details 13)

Loans (Details 13) $ in Thousands	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Cash Flows Expected to be Collected at Acquisition	$ 5,721
Fair Value of Acquired Loans at Acquisition	$ 4,703

Loans (Details 14)

Loans (Details 14) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 16,728	$ 16,199
New loans	10,806	5,857
Effect of changes in composition of related parties	(217)	0
Repayments	(5,754)	(5,328)
Ending Balance	$ 21,563	$ 16,728

Loans (Details Textual)

Loans (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable, Loans in Process	$ 123,293,000	$ 115,972,000
Allowance for Loan and Lease Losses, Period Increase (Decrease)	1,176,000	2,949,000	$ 283,000
Consumer Portfolio Segment [Member]
Loans and Leases Receivable, Loans in Process	796,000
Troubled Debt Restructuring [Member]
Financing Receivable, Modifications, Recorded Investment	19,200,000	21,700,000
Specified Reserves, Provision for Troubled Debt Restructurings	581,000	751,000
Loans and Leases Receivable, Impaired, Commitment to Lend	169,000	242,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down	7,600,000
Allowance for Loan and Lease Losses, Period Increase (Decrease)	17,000
Troubled Debt Restructuring [Member] | Subsequently Defaulted [Member]
Financing Receivable, Allowance for Credit Losses, Period Increase (Increase)	$ 110,000	$ 104,000	$ 413,000

Mortgage Banking (Details)

Mortgage Banking (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Gain from sale of mortgage loans	$ 4,502	$ 4,664	$ 5,311
Mortgage loans servicing revenue (expense):
Mortgage loan servicing revenue	3,784	3,714	3,560
Amortization of mortgage servicing rights	(1,341)	(1,464)	(1,724)
Mortgage servicing rights valuation adjustments	132	90	123
Mortgage loans servicing revenue (expense), Total	2,575	2,340	1,959
Net mortgage banking income	$ 7,077	$ 7,004	$ 7,270

Mortgage Banking (Details 1)

Mortgage Banking (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Mortgage servicing assets:
Balance at beginning of period	$ 10,240	$ 10,117	$ 9,893
Loans sold, servicing retained	1,520	1,587	1,948
Amortization	(1,341)	(1,464)	(1,724)
Carrying value before valuation allowance at end of period	10,419	10,240	10,117
Valuation allowance:
Balance at beginning of period	(432)	(522)	(645)
Impairment recovery (charges)	132	90	123
Balance at end of period	(300)	(432)	(522)
Net carrying value of MSRs at end of period	10,119	9,808	9,595
Fair value of MSRs at end of period	$ 10,656	$ 9,930	$ 9,770

Mortgage Banking (Details 2)

Mortgage Banking (Details 2) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)Number	Dec. 31, 2017USD ($)Number
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Mortgage Loans On Banking Number Of Loans | Number	14,606	14,447
Investor, Principal Outstanding | $	$ 1,411,833	$ 1,386,068
Fannie Mae [Member]
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Mortgage Loans On Banking Number Of Loans | Number	4,919	4,920
Investor, Principal Outstanding | $	$ 461,730	$ 461,783
Freddie Mac [Member]
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Mortgage Loans On Banking Number Of Loans | Number	9,571	9,420
Investor, Principal Outstanding | $	$ 937,406	$ 913,632
Federal Home Loan Bank Borrowings [Member]
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Mortgage Loans On Banking Number Of Loans | Number	99	88
Investor, Principal Outstanding | $	$ 11,983	$ 9,723
Other Mortgage Banking [Member]
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Mortgage Loans On Banking Number Of Loans | Number	17	19
Investor, Principal Outstanding | $	$ 714	$ 930

Mortgage Banking (Details 3)

Mortgage Banking (Details 3) $ in Thousands	Dec. 31, 2018USD ($)
10% Adverse Change [Member]
Assumption:
Decline in fair value from increase in prepayment rate	$ 332
Decline in fair value from increase in discount rate	220
20% Adverse Change [Member]
Assumption:
Decline in fair value from increase in prepayment rate	670
Decline in fair value from increase in discount rate	$ 459

Mortgage Banking (Details Textu

Mortgage Banking (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]
Residential Mortgage Loans, Unpaid Balance	$ 1,410,000,000	$ 1,390,000,000
Escrow Deposit	$ 14,300,000	$ 13,500,000
Weighted Average Discount Rate	12.01%	12.01%
Adverse Changes In Fair Value One	10.00%
Adverse Changes In Fair Value Two	20.00%
Secondary Market Buy Back Expense	$ 0	$ (36,000)	$ (135,000)
Accrued Liabilities and Other Liabilities	$ 43,000	$ 43,000

Premises and Equipment (Details

Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Cost:
Land	$ 7,977	$ 7,977
Land improvements	1,326	1,326
Buildings	44,632	44,563
Leasehold improvements	1,015	971
Furniture, fixtures and equipment	34,871	34,216
Construction in process	692	1,402
Property, Plant and Equipment, Gross	90,513	90,455
Less allowances for depreciation and amortization	(49,843)	(50,238)
Property, Plant and Equipment, Net	$ 40,670	$ 40,217

Premises and Equipment (Detai_2

Premises and Equipment (Details 1) $ in Thousands	Dec. 31, 2018USD ($)
Property, Plant and Equipment [Line Items]
2,019	$ 967
2,020	884
2,021	843
2,022	768
2,023	739
Thereafter	8,078
Total	$ 12,279

Premises and Equipment (Detai_3

Premises and Equipment (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Depreciation	$ 3,688,000	$ 3,567,000	$ 3,356,000
Operating Leases, Rent Expense, Net	$ 1,000,000	$ 691,000	$ 571,000

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Indefinite-lived Intangible Assets [Line Items]
Beginning balance	$ 98,569	$ 61,798
Goodwill acquired or adjusted during the year	0	36,771
Ending balance	$ 98,569	$ 98,569

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Indefinite-lived Intangible Assets [Line Items]
Begnning Balance, Gross Carrying Amount	$ 20,133	$ 14,477	$ 14,477
Intangible assets acquired, Gross Carrying Amount		5,656
Amortization of intangible assets, Gross Carrying Amount	0	0	0
Ending Balance, Gross Carrying Amount	20,133	20,133	14,477
Beginning Balance, Accumulated Amortization	(14,430)	(13,141)	(12,606)
Intangible assets acquired, Accumulated Amortization		0
Amortization of intangible assets, Accumulated Amortization	(1,312)	(1,289)	(535)
Ending Balance, Accumulated Amortization	(15,742)	(14,430)	(13,141)
Beginning Balance, Net Value	5,703	1,336	1,871
Intangible assets acquired, Net Value		5,656
Amortization of Intangible Assets, Net Value	(1,312)	(1,289)	(535)
Ending Balance, Net Value	$ 4,391	$ 5,703	$ 1,336

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets (Details 2) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Indefinite-lived Intangible Assets [Line Items]
2,019	$ 1,097
2,020	914
2,021	744
2,022	576
2,023	439
Thereafter	621
Total	$ 4,391	$ 5,703	$ 1,336	$ 1,871

Deposits (Details)

Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Deposits [Line Items]
Checking and money market accounts	$ 3,997	$ 2,033	$ 1,463
Savings accounts	115	102	88
Certificates of deposit	9,785	6,683	4,710
Totals	$ 13,897	$ 8,818	$ 6,261

Deposits (Details 1)

Deposits (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deposits [Line Items]
Noninterest-bearing checking accounts	$ 607,198	$ 571,360
Interest-bearing checking and money market accounts	1,040,471	1,005,519
Savings deposits	292,829	302,022
Retail certificates of deposit less than $250,000	591,822	504,912
Retail certificates of deposit greater than $250,000	88,562	53,843
Total	$ 2,620,882	$ 2,437,656

Deposits (Details 2)

Deposits (Details 2) $ in Thousands	Dec. 31, 2018USD ($)
Deposits [Line Items]
2,019	$ 417,562
2,020	130,756
2,021	85,563
2,022	33,184
2,023	13,319
Thereafter	0
Total	$ 680,384

Deposits (Details Textual)

Deposits (Details Textual) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Deposit [Line Items]
Accounts Payable	$ 366,000	$ 97,000
Certificates of Deposit, at Carrying Value	314,000	68,000
Money Market Funds, at Carrying Value	$ 52,000	$ 29,000

Advances from Federal Home Lo_3

Advances from Federal Home Loan Bank (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Putable advances		$ 5,000
Single maturity fixed rate advances	$ 59,000	72,000
Amortizable mortgage advances	1,213	7,306
Overnight Advances	25,000
Fair value adj. on acquired balances	(24)	(27)
Totals	$ 85,189	$ 84,279
March 2018 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate		2.35%
January 2018 to March 2022 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate		1.46%
September 2018 to August 2027 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate		1.85%
January 2019 to March 2022 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate	1.67%
August 2027 [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate	2.14%
Overnight [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Weighted Average Interest Rate	2.45%

Advances from Federal Home Lo_4

Advances from Federal Home Loan Bank (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Future Minimum Lease Payments For Capital Leases [Line Items]
2,019	$ 45,926
2,020	21,563
2,021	15,307
2,022	219
2,023	3,169
Thereafter	563
Total minimum payments	86,747
Less amounts representing interest	(1,534)
Less fair value adj. on acquired balances	(24)	$ (27)
Totals	$ 85,189	$ 84,279

Advances from Federal Home Lo_5

Advances from Federal Home Loan Bank (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2016
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Pledged Assets Separately Reported, Loans Pledged as Collateral, at Fair Value	$ 1,200	$ 1,000
Proceeds From First Federal Home Loan Bank Advances	$ 447.4
Percentage Of Advances Secured Collateral Pledged	50.00%
Securities Investment [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Percentage Of Advances Secured Collateral Pledged	105.00%
Residential Mortgage [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Percentage Of Advances Secured Collateral Pledged	125.00%
Multi Family or Non Residential Real Estate Loans, and Agriculture Real Estate Loans [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Percentage Of Advances Secured Collateral Pledged	300.00%
One to Four Family Residential Mortgages or Investment Securities [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Percentage Of Advances Secured Collateral Pledged	50.00%
Cash Management Advance [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Line of Credit, Current	$ 15
Long-term Line of Credit	25
Repo Advance [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Line of Credit, Current	$ 100

Junior Subordinated Debenture_3

Junior Subordinated Debentures Owed to Unconsolidated Subsidiary Trust (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Junior subordinated debentures owed to unconsolidated subsidiary trusts	$ 36,083	$ 36,083
First Defiance Statutory Trusts I [Member]
Debt Instrument [Line Items]
Junior subordinated debentures owed to unconsolidated subsidiary trusts	20,619	20,619
First Defiance Statutory Trusts II [Member]
Debt Instrument [Line Items]
Junior subordinated debentures owed to unconsolidated subsidiary trusts	$ 15,464	$ 15,464

Junior Subordinated Debenture_4

Junior Subordinated Debentures Owed to Unconsolidated Subsidiary Trust (Details Textual) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2007	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Preferred Securities Variable Interest Rate		LIBOR rate plus 1.38%
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Description		The Trust Preferred Securities and Subordinated Debentures mature on December 15, 2035, but can be redeemed at the Company’s option at any time now.
First Defiance Statutory Trusts I [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Trust Preferred Securities		$ 20
Proceeds from Issuance of Subordinated Long-term Debt		$ 20.6
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Description		The Trust Preferred Securities and Subordinated Debentures mature on June 15, 2037, but can be redeemed at the Company’s option at any time now.
Coupon Rate On Preferred Securities, Period End		4.17%	2.97%
First Defiance Statutory Trusts II [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Trust Preferred Securities	$ 15
Proceeds from Issuance of Subordinated Long-term Debt	$ 15.5
Preferred Securities Variable Interest Rate	LIBOR rate plus 1.5%
Coupon Rate On Preferred Securities, Period End		4.29%	3.09%

Securities Sold Under Agreeme_3

Securities Sold Under Agreements to Repurchase and Other Short Term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Securities sold under agreement to repurchase
Amounts outstanding at year-end	$ 5,741	$ 26,019
Year-end interest rate	0.31%	0.20%
Average daily balance during year	$ 8,911	$ 23,337
Maximum month-end balance during the year	$ 18,259	$ 26,019
Average interest rate during the year	0.26%	0.23%

Securities Sold Under Agreeme_4

Securities Sold Under Agreements to Repurchase and Other Short Term Borrowings (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Securities sold under agreement to repurchase
Amounts outstanding at year-end	$ 5,741	$ 26,019
Gross amount of recognized liabilities for repurchase agreements	5,741	26,019
Collateralized Mortgage Backed Securities [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	1,542	19,420
Maturity Overnight [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	5,741	26,019
Maturity Overnight [Member] | Collateralized Mortgage Backed Securities [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	1,542	19,420
Maturity Less than 30 Days [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	0	0
Maturity Less than 30 Days [Member] | Collateralized Mortgage Backed Securities [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	0	0
Maturity 30 to 90 Days [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	0	0
Maturity 30 to 90 Days [Member] | Collateralized Mortgage Backed Securities [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	0	0
Maturity Greater than 90 Days [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	0	0
Maturity Greater than 90 Days [Member] | Collateralized Mortgage Backed Securities [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	0	0
Mortgage Backed Securities, Other [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	4,199	6,599
Mortgage Backed Securities, Other [Member] | Maturity Overnight [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	4,199	6,599
Mortgage Backed Securities, Other [Member] | Maturity Less than 30 Days [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	0	0
Mortgage Backed Securities, Other [Member] | Maturity 30 to 90 Days [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	0	0
Mortgage Backed Securities, Other [Member] | Maturity Greater than 90 Days [Member]
Securities sold under agreement to repurchase
Amounts outstanding at year-end	$ 0	$ 0

Securities Sold Under Agreeme_5

Securities Sold Under Agreements to Repurchase and Other Short Term Borrowings (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Short Term Debt Fed Funds Rate	2.25%
First Tennessee Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 20	$ 20
MUFG Union Bank [Member]
Line of Credit, Current	20	$ 20
Federal Reserve Bank Discount [Member]
Line of Credit, Current	$ 11.2
Short-term Debt, Terms	50 basis points over the federal funds rate

Other Noninterest Expense (Deta

Other Noninterest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018		Dec. 31, 2017		Dec. 31, 2016
Other Noninterest Expense [Line Items]
Legal and other professional fees	$ 3,328		$ 3,603		$ 2,902
Marketing	2,407		2,070		1,835
State financial institutions tax	2,118		1,819		1,781
OREO expenses and write-downs	742		177		244
Printing and office supplies	631		626		512
Amortization of intangibles	1,312		1,289		535
Postage	505		523		456
Check charge-offs and fraud losses	415		277		266
Credit and collection expense	379		359		303
Other	6,792	[1]	8,067	[2]	7,118	[3]
Total other noninterest expense	$ 18,629		$ 18,810		$ 15,952
[1]	Includes a credit of $806,000 for an accounting correction related to the Deferred Compensation Plan. See Note 19 for further details.
[2]	Includes $1.1 million of acquisition related expenses.
[3]	Includes $443,000 of acquisition related expenses and $300,000 of costs associated with termination of a lease agreement.

Other Noninterest Expense (De_2

Other Noninterest Expense (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Non-Interest Expense [Line Items]
Business Combination, Acquisition Related Costs		$ 1,100,000	$ 443,000
Lease agreement termination Costs			$ 300,000
Increase (Decrease) in Deferred Compensation	$ 170,000

Postretirement Benefits (Detail

Postretirement Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Unrecognized prior service cost	$ 97	$ 39	$ 52
Unrecognized actuarial losses	(86)	551	392
Total loss recognized in Accumulated Other Comprehensive Income	11	590	444
Income tax effect	80	(206)	(155)
Net loss recognized in Accumulated Other Comprehensive Income	$ 91	$ 384	$ 289

Postretirement Benefits (Deta_2

Postretirement Benefits (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Change in benefit obligation:
Benefit obligation at beginning of year	$ 3,194	$ 2,985
Service cost	55	58	$ 53
Interest cost	105	117	128
Participant contribution	32	29
Plan amendments for acquisitions	72	0	12
Actuarial (gains) / losses	(632)	166	(184)
Benefits paid	(184)	(161)
Benefit obligation at end of year	2,642	3,194	2,985
Change in fair value of plan assets:
Balance at beginning of year	0	0
Employer contribution	152	132
Participant contribution	32	29
Benefits paid	(184)	(161)
Balance at end of year	0	0	$ 0
Funded status at end of year	$ (2,642)	$ (3,194)

Postretirement Benefits (Deta_3

Postretirement Benefits (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Service cost-benefits attributable to service during the period	$ 55	$ 58	$ 53
Interest cost on accumulated postretirement benefit obligation	105	117	128
Net amortization and deferral	18	19	30
Net periodic postretirement benefit cost	178	194	211
Net (gain) / loss during the year	(632)	166	(184)
Plan amendment for acquisition	72	0	12
Amortization of prior service cost and actuarial losses	(18)	(19)	(30)
Total recognized in comprehensive income	(578)	147	(202)
Total recognized in net periodic postretirement benefit cost and other comprehensive income	$ (400)	$ 341	$ 9

Postretirement Benefits (Deta_4

Postretirement Benefits (Details 3)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Weighted average discount rates:
Used to determine benefit obligations at December 31	4.00%	3.50%	4.00%
Used to determine net periodic postretirement benefit cost for years ended December 31	3.50%	4.00%	4.25%
Assumed health care cost trend rates at December 31:
Health care cost trend rate assumed for next year	6.50%	7.00%	7.50%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	3.90%	5.00%	5.00%
Year that rate reaches ultimate trend rate	2,075	2,022	2,022

Postretirement Benefits (Deta_5

Postretirement Benefits (Details 4) $ in Thousands	Dec. 31, 2018USD ($)
Defined Benefit Plan Disclosure [Line Items]
2,019	$ 168
2,020	181
2,021	195
2,022	209
2,023	181
2024 through 2028	$ 969

Postretirement Benefits (Deta_6

Postretirement Benefits (Details 5) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Effect on total of service and interest cost, One-Percentage-Point Increase	$ 22	$ 25
Effect on postretirement benefit obligation, One-Percentage-Point Increase	178	392
Effect on total of service and interest cost, One-Percentage-Point Decrease	(18)	(21)
Effect on postretirement benefit obligation, One-Percentage-Point Decrease	$ (153)	$ (333)

Postretirement Benefits (Deta_7

Postretirement Benefits (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Postretirement Benefits Description Of Medical Coverage		First Federal employees who retired prior to April 1, 1997, and who completed 20 years of service after age 40 receive full medical coverage at no cost.
Maximum Reimburse Medical Expenses		$ 10,000
Postretirement Benefits Description Of Medical Coverage One		First Federal employees who were born after December 31, 1950, are not eligible for the medical coverage described above at retirement.
Scenario, Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Comprehensive Income Loss Defined Benefit Plan Expected To Be Recognized In Net Postretirement Benefit Cost Before Tax	$ 0
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Reclassification Adjustment, before Tax	14,000
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), after Tax	11,000
Defined Benefits Plan, Expected Contribution, Before Reflecting Subsidy Payments	$ 168,000

Regulatory Matters (Details)

Regulatory Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Dec. 31, 2017	[2]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 Capital (to Risk Weighted Assets) Actual (Ratio)	4.50%
Total Capital (to Risk Weighted Assets) Actual (Ratio)	7.00%
Consolidated [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 Capital (to Risk-Weighted Assets) Actual (in dollars)	$ 303,860	[1]	$ 274,832
CET1 Capital (to Risk-Weighted Assets) Minimum Required for Adequately Capitalized (in dollars)	124,339	[1]	118,596
CET1 Capital (to Risk-Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (in dollars)		[1]
CET1 Capital (to Risk-Weighted Assets) Actual (Ratio)	11.00%	[1]	10.43%
CET1 Capital (to Risk-Weighted Assets) Minimum Required for Adequately Capitalized (Ratio)	4.50%	[1],[3]	4.50%	[4]
CET1 Capital (to Risk-Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (Ratio)		[1]
Tier 1 Capital Actual (in dollars)	$ 338,860	[1]	$ 309,832
Tier 1 Capital Minimum Required for Adequately Capitalized (in dollars)	121,716	[1]	114,773
Tier 1 Capital Minimum Required to be Well Capitalized for Prompt Corrective Action (in dollars)		[1]
Tier 1 Capital Actual (Ratio)	11.14%	[1]	10.80%
Tier 1 Capital Minimum Required for Adequately Capitalized (Ratio)	4.00%	[1],[3]	4.00%	[4]
Tier 1 Capital Minimum Required to be Well Capitalized for Prompt Corrective Action (Ratio)		[1]
Tier 1 Capital (to Risk Weighted Assets) Actual (in dollars)	$ 338,860	[1]	$ 309,832
Tier 1 Capital (to Risk Weighted Assets) Minimum Required for Adequately Capitalized (in dollars)	165,786	[1]	158,128
Tier 1 Capital (to Risk Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (in dollars)		[1]
Tier 1 Capital (to Risk Weighted Assets) Actual (Ratio)	12.26%	[1]	11.76%
Tier 1 Capital (to Risk Weighted Assets) Minimum Required for Adequately Capitalized (Ratio)	6.00%	[1],[3]	6.00%	[4]
Tier 1 Capital (to Risk Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (Ratio)		[1]
Total Capital (to Risk Weighted Assets) Actual (in dollars)	$ 367,191	[1]	$ 336,515
Total Capital (to Risk Weighted Assets) Minimum Required for Adequately Capitalized (in dollars)	221,048	[1]	210,838
Total Capital (to Risk Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (in dollars)		[1]
Total Capital (to Risk Weighted Assets) Actual (Ratio)	13.29%	[1]	12.77%
Total Capital (to Risk Weighted Assets) Minimum Required for Adequately Capitalized (Ratio)	8.00%	[1],[3]	8.00%	[4]
Total Capital (to Risk Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (Ratio)		[1]
First Federal [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 Capital (to Risk-Weighted Assets) Actual (in dollars)	$ 322,520	[1]	$ 298,571
CET1 Capital (to Risk-Weighted Assets) Minimum Required for Adequately Capitalized (in dollars)	124,225	[1]	118,534
CET1 Capital (to Risk-Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (in dollars)	$ 179,436	[1]	$ 171,216
CET1 Capital (to Risk-Weighted Assets) Actual (Ratio)	11.68%	[1]	11.33%
CET1 Capital (to Risk-Weighted Assets) Minimum Required for Adequately Capitalized (Ratio)	4.50%	[1],[3]	4.50%	[4]
CET1 Capital (to Risk-Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (Ratio)	6.50%	[1]	6.50%
Tier 1 Capital Actual (in dollars)	$ 322,520	[1]	$ 298,571
Tier 1 Capital Minimum Required for Adequately Capitalized (in dollars)	121,461	[1]	114,539
Tier 1 Capital Minimum Required to be Well Capitalized for Prompt Corrective Action (in dollars)	$ 151,827	[1]	$ 143,173
Tier 1 Capital Actual (Ratio)	10.62%	[1]	10.43%
Tier 1 Capital Minimum Required for Adequately Capitalized (Ratio)	4.00%	[1],[3]	4.00%	[4]
Tier 1 Capital Minimum Required to be Well Capitalized for Prompt Corrective Action (Ratio)	5.00%	[1]	5.00%
Tier 1 Capital (to Risk Weighted Assets) Actual (in dollars)	$ 322,520	[1]	$ 298,571
Tier 1 Capital (to Risk Weighted Assets) Minimum Required for Adequately Capitalized (in dollars)	165,633	[1]	158,046
Tier 1 Capital (to Risk Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (in dollars)	$ 220,844	[1]	$ 210,728
Tier 1 Capital (to Risk Weighted Assets) Actual (Ratio)	11.68%	[1]	11.33%
Tier 1 Capital (to Risk Weighted Assets) Minimum Required for Adequately Capitalized (Ratio)	6.00%	[1],[3]	6.00%	[4]
Tier 1 Capital (to Risk Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (Ratio)	8.00%	[1]	8.00%
Total Capital (to Risk Weighted Assets) Actual (in dollars)	$ 350,851	[1]	$ 325,254
Total Capital (to Risk Weighted Assets) Minimum Required for Adequately Capitalized (in dollars)	220,844	[1]	210,728
Total Capital (to Risk Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (in dollars)	$ 276,055	[1]	$ 263,410
Total Capital (to Risk Weighted Assets) Actual (Ratio)	12.71%	[1]	12.35%
Total Capital (to Risk Weighted Assets) Minimum Required for Adequately Capitalized (Ratio)	8.00%	[1],[3]	8.00%	[4]
Total Capital (to Risk Weighted Assets) Minimum Required to be Well Capitalized for Prompt Corrective Action (Ratio)	10.00%	[1]	10.00%
[1]	Core capital is computed as a percentage of adjusted total assets of $3.04 billion for consolidated and for the Bank. Risk-based capital is computed as a percentage of total risk-weighted assets of $2.76 billion for consolidated and for the Bank.
[2]	Core capital is computed as a percentage of adjusted total assets of $2.87 billion for consolidated and $2.86 billion for the Bank. Risk-based capital is computed as a percentage of total risk-weighted assets of $2.64 billion for consolidated and $2.63 billion for the Bank.
[3]	Excludes capital conservation buffer of 1.875% as of December 31, 2018.
[4]	Excludes capital conservation buffer of 1.25% as of December 31, 2017.

Regulatory Matters (Details Tex

Regulatory Matters (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018		Dec. 31, 2017
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Adjusted Total Assets	$ 3,040,000,000		$ 2,870,000,000
Risk Weighted Assets			$ 2,860,000,000
Tier One Risk Based Capital to Risk Weighted Assets	4.50%
Excess Tier One Risk Based Capital to Risk Weighted Assets	2.50%
Capital to Risk Weighted Assets	7.00%
Capital Conservation Buffer	1.875%		1.25%
Basel III [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Excess Tier One Risk Based Capital to Risk Weighted Assets	8.50%
Capital to Risk Weighted Assets	10.50%
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	4.00%
Basel III [Member] | Maximum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Risk Based Capital to Risk Weighted Assets	6.00%
Basel III [Member] | Minimum [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Risk Based Capital to Risk Weighted Assets	4.00%
First Federal [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Proceeds from Dividends Received	$ 950,000		$ 1,000,000
Dividends Receivable	$ 22,000,000		$ 13,000,000
Tier One Risk Based Capital to Risk Weighted Assets	11.68%	[1]	11.33%	[2]
Capital to Risk Weighted Assets	12.71%	[1]	12.35%	[2]
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	[1],[3]	6.00%	[2],[4]
Consolidated [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Adjusted Total Assets			$ 2,640,000,000
Risk Weighted Assets	$ 2,760,000,000		$ 2,630,000,000
Tier One Risk Based Capital to Risk Weighted Assets	12.26%	[1]	11.76%	[2]
Capital to Risk Weighted Assets	13.29%	[1]	12.77%	[2]
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	[1],[3]	6.00%	[2],[4]
First Insurance [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Proceeds from Dividends Received	$ 1,600,000		$ 1,800,000
[1]	Core capital is computed as a percentage of adjusted total assets of $3.04 billion for consolidated and for the Bank. Risk-based capital is computed as a percentage of total risk-weighted assets of $2.76 billion for consolidated and for the Bank.
[2]	Core capital is computed as a percentage of adjusted total assets of $2.87 billion for consolidated and $2.86 billion for the Bank. Risk-based capital is computed as a percentage of total risk-weighted assets of $2.64 billion for consolidated and $2.63 billion for the Bank.
[3]	Excludes capital conservation buffer of 1.875% as of December 31, 2018.
[4]	Excludes capital conservation buffer of 1.25% as of December 31, 2017.

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal									$ 9,538	$ 14,588	$ 13,125
State and local									207	181	244
Deferred									881	1,261	(615)
Tax reform revaluation									0	154	0
Income Tax Expense (Benefit)	$ 3,082	$ 2,483	$ 2,564	$ 2,497	$ 4,431	$ 4,219	$ 3,677	$ 3,857	$ 10,626	$ 16,184	$ 12,754

Income Taxes (Details 1)

Income Taxes (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Tax expense at statutory rate (21%-2018 35%-2017 and 2016)									$ 11,944	$ 16,958	$ 14,559
Increases (decreases) in taxes from:
State income tax - net of federal tax benefit									164	119	159
Tax exempt interest income, net of TEFRA									(770)	(1,218)	(1,168)
Bank owned life insurance									(255)	(1,212)	(341)
Captive insurance									(325)	(364)	(414)
BOLI surrender									0	1,721	0
Tax reform revaluation									0	154	0
Other									(132)	26	(41)
Totals	$ 3,082	$ 2,483	$ 2,564	$ 2,497	$ 4,431	$ 4,219	$ 3,677	$ 3,857	$ 10,626	$ 16,184	$ 12,754

Income Taxes (Details 2)

Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Deferred federal income tax assets:
Allowance for loan losses	$ 5,802	$ 5,415
Postretirement benefit costs	473	671
Deferred compensation	1,011	1,354
Impaired loans	1,154	1,432
Accrued vacation	11	123
Allowance for real estate held for sale losses	62	71
Deferred loan origination fees and costs	435	332
Accrued bonus	638	333
Net unrealized gains on available-for-sale securities	547	0
Other	1,273	1,578
Total deferred federal income tax assets	11,406	11,309
Deferred federal income tax liabilities:
FHLB stock dividends	1,558	1,558
Goodwill	4,584	4,377
Mortgage servicing rights	2,125	2,060
Fixed assets	2,046	1,039
Other intangible assets	778	990
Loan mark to market	7	5
Net unrealized gains on available-for-sale securities	0	194
Prepaid expenses	550	539
Other	22	316
Total deferred federal income tax liabilities	11,670	11,078
Net deferred federal income tax asset		231
Net deferred federal income tax liability	$ (264)	$ 0

Income Taxes (Details 3)

Income Taxes (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Beginning Balance	$ 0	$ 398	$ 0
Additions based on tax positions related to the current year	0	0	0
Additions for tax positions of prior years	0	0	398
Reductions for tax positions of prior years	0	0	0
Reductions due to the statute of limitations	0	0	0
Settlements	0	(398)	0
Ending Balance	$ 0	$ 0	$ 398

Income Taxes (Details Textual)

Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Line Items]
Tax Basis of Investments, Cost for Income Tax Purposes	$ 11,000,000
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Policyholders' Surplus	2,310,000
Income Tax Examination, Penalties and Interest Expense	0	$ 0	$ 40,000
Income Tax Examination, Penalties and Interest Accrued	$ 0	$ 0	40,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	$ 0	$ 154,000	$ 0

Employee Benefit Plans (Details

Employee Benefit Plans (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Employee Contribution Plan Description	First Defiance matches 100% of the participants’ contributions up to 3% of compensation and then 50% of the participants’ contributions for the next 2% of compensation.
Employee Benefits Plans Contribution	$ 1,310,000	$ 1,190,000	$ 979,000
Liability for Future Policy Benefits, Period Expense (Income)	38,000	248,000	$ 71,000
Liability for Future Policy Benefits	1,710,000	1,690,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate			4.00%
Defined Benefit Plan, Benefit Obligation, Business Combination		402,000
Deferred Compensation Arrangement with Individual, Compensation Expense	15,000	427,000	$ 528,000
Deferred Compensation Liability, Current and Noncurrent	4,500,000	$ 6,100,000
Deferred Compensation Plan Assets and Liabilities	5,000,000
Increase (Decrease) in Deferred Compensation	170,000
Adjustments to equity [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Increase (Decrease) in Deferred Compensation	806,000
Adjustments to tax liability [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Increase (Decrease) in Deferred Compensation	$ 636,000

Stock Compensation Plans (Detai

Stock Compensation Plans (Details 1) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)$ / sharesshares
Options Outstanding, January 1, 2018 | shares	86,900
Options Outstanding, Forfeited or cancelled | shares	0
Options Outstanding, Exercised | shares	(47,500)
Options Outstanding, Granted | shares	0
Options Outstanding, December 31, 2018 | shares	39,400
Options Outstanding, Vested or expected to vest at December 31, 2018 | shares	39,400
Options Outstanding, Exercisable at December 31, 2018 | shares	23,900
Weighted Average Exercise Price, Outstanding, January 1, 2018 | $ / shares	$ 10.81
Weighted Average Exercise Price, Forfeited or cancelled | $ / shares	0
Weighted Average Exercise Price, Exercised | $ / shares	8.15
Weighted Average Exercise Price, Granted | $ / shares	0
Weighted Average Exercise Price, outstanding, December 31, 2018 | $ / shares	14
Weighted Average Exercise Price, Vested or expected to vest at December 31, 2018 | $ / shares	14
Weighted Average Exercise Price, Exercisable at December 31, 2018 | $ / shares	$ 12.21
Weighted Average Remaining Contractual Term (in years), outstanding, December 31, 2018	4 years 11 months 16 days
Weighted Average Remaining Contractual Term (in years), Vested or expected to vest at December 31, 2018	4 years 11 months 16 days
Weighted Average Remaining Contractual Term (in years), Exercisable at December 31, 2018	4 years 1 month 20 days
Aggregate Intrinsic Value, outstanding, December 31, 2018 | $	$ 414
Aggregate Intrinsic Value, Vested or expected to vest at December 31, 2018 | $	414
Aggregate Intrinsic Value, Exercisable at December 31, 2018 | $	$ 294

Stock Compensation Plans (Det_2

Stock Compensation Plans (Details 2) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Intrinsic value of options exercised	$ 893	$ 301	$ 752
Cash received from option exercises	111	199	714
Tax benefit realized from option exercises	$ 28	$ 54	$ 165
Weighted average fair value of options granted	$ 0	$ 0	$ 13.95

Stock Compensation Plans (Det_3

Stock Compensation Plans (Details 3)	12 Months Ended
	Dec. 31, 2018$ / sharesshares
Restricted Stock Units (RSUs) [Member]
Shares, Unvested at January 1, 2018 | shares	145,076
Shares, Granted | shares	49,024
Shares, Vested | shares	(49,514)
Shares, Forfeited | shares	0
Shares, Unvested at December 31, 2018 | shares	144,586
Weighted-Average Grant Date Fair Value, Unvested at January 1, 2018 | $ / shares	$ 20.26
Weighted-Average Grant Date Fair Value, Granted | $ / shares	26.97
Weighted-Average Grant Date Fair Value, Vested | $ / shares	16.15
Weighted-Average Grant Date Fair Value, Forfeited | $ / shares	0
Weighted-Average Grant Date Fair Value, Unvested at December 31, 2018 | $ / shares	$ 23.94
Stock Grants [Member]
Shares, Unvested at January 1, 2018 | shares	21,072
Shares, Granted | shares	66,118
Shares, Vested | shares	(56,818)
Shares, Forfeited | shares	0
Shares, Unvested at December 31, 2018 | shares	30,372
Weighted-Average Grant Date Fair Value, Unvested at January 1, 2018 | $ / shares	$ 25.28
Weighted-Average Grant Date Fair Value, Granted | $ / shares	19.68
Weighted-Average Grant Date Fair Value, Vested | $ / shares	17.51
Weighted-Average Grant Date Fair Value, Forfeited | $ / shares	0
Weighted-Average Grant Date Fair Value, Unvested at December 31, 2018 | $ / shares	$ 28.48

Stock Compensation Plans (Det_4

Stock Compensation Plans (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Feb. 27, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number		39,400	86,900
Option Subscription, Description		The amount of benefit under each LTIP will be determined individually at the end of the 36 month performance period ending December 31. The benefits earned under each LTIP will be paid out in equity in the first quarter following the end of the performance period. The participants are required to be employed on the day of payout in order to receive the payment.
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options		$ 50,000
Employee Service Share Based Compensation Nonvested Awards, Total Compensation Cost Not Yet Recognized, Period For Recognition (in years)		1 year 7 months 6 days
Allocated Share-based Compensation Expense		$ 2,000,000	$ 2,000,000	$ 1,300,000
Compensation Expense, Maximum		4,300,000
Estimated Compensation Expense, Excepted		3,700,000
Unrecognized Compensation Expense		$ 899,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		7,348
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		174,958
Restricted Stock Units (RSUs) [Member] | Share Based compensation Award Tranche One
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		4,104
Restricted Stock Units (RSUs) [Member] | Share Based Compensation Award Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		12,500
Short-term Equity Incentive Plan 2013 [Member]
Stock Option Period, Description		All options expire ten years from the date of grant. Vested options of retirees expire on the earlier of the scheduled expiration date or three months after the retirement date.
Equity Plan 2010 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized					900,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant		895,500
Short-term and Long-term Equity Incentive Plan 2011 [Member]
Allocated Share-based Compensation Expense		$ 961,000	$ 774,000
Stock Option Grant, 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Vested Percentage, Year		20.00%
Short Term Equity Incentive Plan 2014 [Member]
Option Subscription, Description		The final amount of benefits under the STIPs is determined as of December 31 of the same year and paid out in cash in the first quarter of the following year.
Long Term Equity Incentive Plan 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	49,514			49,052
Long Term Equity Incentive Plan 2015 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			41,314
Option Subscription, Description		The amount of benefit under each LTIP will be determined individually at the end of the 36 month performance period ending December 31. The benefits earned under each LTIP will be paid out in equity in the first quarter following the end of the performance period. The participants are required to be employed on the day of payout in order to receive the payment.
Long Term Equity Incentive Plan 2015 [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate		45.00%
Long Term Equity Incentive Plan 2015 [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate		20.00%
Short Term Equity Incentive Plan 2015 [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate		45.00%
Short Term Equity Incentive Plan 2015 [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate		10.00%
Long Term Equity Incentive Plan 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		41,676
Restricted Stock Grants [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		16,604
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross		23,952

Parent Company Statements (Deta

Parent Company Statements (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 98,962	$ 113,693	$ 99,003	$ 79,769
Other assets	23,365	38,959
Total assets	3,181,722	2,993,403
Liabilities and stockholders' equity:
Stockholders' equity	399,589	373,286	$ 293,018	$ 280,197
Total liabilities and stockholders' equity	3,181,722	2,993,403
Parent Company [Member]
Assets
Cash and cash equivalents	12,153	8,860
Investment in banking subsidiary	398,922	377,546
Investment in non-bank subsidiaries	23,372	22,319
Other assets	1,723	1,157
Total assets	436,170	409,882
Liabilities and stockholders' equity:
Subordinated debentures	36,083	36,083
Accrued liabilities	498	513
Stockholders' equity	399,589	373,286
Total liabilities and stockholders' equity	$ 436,170	$ 409,882

Parent Company Statements (De_2

Parent Company Statements (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Income Statements, Captions [Line Items]
Interest expense	$ (5,058)	$ (4,434)	$ (3,752)	$ (3,218)	$ (3,140)	$ (3,074)	$ (2,826)	$ (2,391)	$ (16,462)	$ (11,431)	$ (8,440)
Noninterest expense	(21,210)	(22,286)	(22,665)	(23,251)	(21,139)	(20,440)	(20,630)	(23,142)	(89,412)	(85,351)	(71,093)
Income before income taxes and equity in earnings of subsidiaries	15,179	13,789	13,673	14,234	13,831	13,600	12,024	8,997	56,875	48,452	41,597
Net income	$ 12,097	$ 11,306	$ 11,109	$ 11,737	$ 9,400	$ 9,381	$ 8,347	$ 5,140	46,249	32,268	28,843
Other comprehensive income (loss)									(2,412)	2	(3,407)
Comprehensive income									43,837	32,270	25,436
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Dividends from subsidiaries									24,550	15,800	24,200
Interest expense									(1,281)	(1,090)	(753)
Other income									1	1	0
Noninterest expense									(831)	(697)	(644)
Income before income taxes and equity in earnings of subsidiaries									22,439	14,014	22,803
Income tax credit									(431)	(605)	(466)
Income before equity in earnings of subsidiaries									22,870	14,619	23,269
Undistributed equity in earnings of subsidiaries									23,379	17,649	5,574
Net income									46,249	32,268	28,843
Other comprehensive income (loss)									(2,412)	2	(3,407)
Comprehensive income									$ 43,837	$ 32,270	$ 25,436

Parent Company Statements (De_3

Parent Company Statements (Details 2) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Operating activities:
Net income	$ 12,097	$ 11,306	$ 11,109	$ 11,737	$ 9,400	$ 9,381	$ 8,347	$ 5,140	$ 46,249	$ 32,268	$ 28,843
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Net cash provided by (used in) operating activities									53,055	35,957	26,984
Investing activities:
Net cash used in investing activities									(213,024)	(132,878)	(158,480)
Financing activities:
Repurchase of common stock									(6,330)	0	(6,293)
Stock Options Exercised									111	199	714
Direct stock sales									104	73	63
Net cash used in financing activities									145,238	111,611	150,730
Net increase (decrease) in cash and cash equivalents									(14,731)	14,690	19,234
Parent Company [Member]
Operating activities:
Net income									46,249	32,268	28,843
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Undistributed equity in earnings of subsidiaries									(23,379)	(17,649)	(5,574)
Change in other assets and liabilities									(419)	(358)	235
Net cash provided by (used in) operating activities									22,451	14,261	23,504
Investing activities:
Cash paid for Commercial Bancshares									0	(12,340)	0
Capital contribution to subsidiary									0	(6,491)	0
Net cash used in investing activities									0	(18,831)	0
Financing activities:
Repurchase of common stock									(6,330)	0	(6,293)
Cash dividends paid									(13,043)	(9,859)	(7,890)
Stock Options Exercised									111	199	714
Direct stock sales									104	73	66
Net cash used in financing activities									(19,158)	(9,587)	(13,406)
Net increase (decrease) in cash and cash equivalents									3,293	(14,157)	10,098
Cash and cash equivalents at beginning of year				$ 8,860				$ 23,017	8,860	23,017	12,919
Cash and cash equivalents at end of year	$ 12,153				$ 8,860				$ 12,153	$ 8,860	$ 23,017

Fair Value (Details)

Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Available for sale securities:
Available for sale securities, Total Fair Value	$ 294,076	$ 260,650
Collateralized mortgage obligations- residential [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	101,461	93,876
Fair Value, Inputs, Level 1 [Member] | Collateralized mortgage obligations- residential [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Fair Value, Inputs, Level 2 [Member] | Collateralized mortgage obligations- residential [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	101,461	93,876
Fair Value, Inputs, Level 3 [Member] | Collateralized mortgage obligations- residential [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Obligations of U.S. Government corporations and agencies [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	2,503	508
Obligations of U.S. Government corporations and agencies [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Obligations of U.S. Government corporations and agencies [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	2,503	508
Obligations of U.S. Government corporations and agencies [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Mortgage-backed - residential [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	74,710	59,269
Mortgage-backed - residential [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Mortgage-backed - residential [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	74,710	59,269
Mortgage-backed - residential [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
REMIC [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	2,709	1,065
REMIC [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
REMIC [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	2,709	1,065
REMIC [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Preferred Stock [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	1
Preferred Stock [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	1
Preferred Stock [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Preferred Stock [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Corporate bonds [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	12,806	13,103
Corporate bonds [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Corporate bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	12,806	13,103
Corporate bonds [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Obligations of state and political subdivisions [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	99,887	92,828
Obligations of state and political subdivisions [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Obligations of state and political subdivisions [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	99,887	92,828
Obligations of state and political subdivisions [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value
Mortgage Banking Derivative Asset [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	367	609
Mortgage Banking Derivative Asset [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Mortgage Banking Derivative Asset [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	367	609
Mortgage Banking Derivative Asset [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Mortgage Banking Derivative Liability [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	73	11
Mortgage Banking Derivative Liability [Member] | Fair Value, Inputs, Level 1 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	0	0
Mortgage Banking Derivative Liability [Member] | Fair Value, Inputs, Level 2 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	73	11
Mortgage Banking Derivative Liability [Member] | Fair Value, Inputs, Level 3 [Member]
Available for sale securities:
Available for sale securities, Total Fair Value	$ 0	$ 0

Fair Value (Details 1)

Fair Value (Details 1) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Impaired loans
Total impaired loans	$ 1,775	$ 4,604
Mortgage servicing rights	629	534
Real estate held for sale
Total Real Estate held for sale	705	227
Commercial Real Estate [Member]
Impaired loans
Total impaired loans	1,456	1,787
Real estate held for sale
Total Real Estate held for sale	705	227
Commercial Loan [Member]
Impaired loans
Total impaired loans	319	2,817
Fair Value, Inputs, Level 1 [Member]
Impaired loans
Total impaired loans	0	0
Mortgage servicing rights	0	0
Real estate held for sale
Total Real Estate held for sale	0	0
Fair Value, Inputs, Level 1 [Member] | Commercial Real Estate [Member]
Impaired loans
Total impaired loans	0	0
Real estate held for sale
Total Real Estate held for sale	0	0
Fair Value, Inputs, Level 2 [Member]
Impaired loans
Total impaired loans	0	0
Mortgage servicing rights	629	534
Real estate held for sale
Total Real Estate held for sale	0	0
Fair Value, Inputs, Level 2 [Member] | Commercial Real Estate [Member]
Impaired loans
Total impaired loans	0	0
Real estate held for sale
Total Real Estate held for sale	0	0
Fair Value, Inputs, Level 3 [Member]
Impaired loans
Total impaired loans	1,775	4,604
Mortgage servicing rights	0	0
Real estate held for sale
Total Real Estate held for sale	705	227
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate [Member]
Impaired loans
Total impaired loans	1,456	1,787
Real estate held for sale
Total Real Estate held for sale	705	227
Fair Value, Inputs, Level 3 [Member] | Commercial Loan [Member]
Impaired loans
Total impaired loans	$ 319	$ 2,817

Fair Value (Details 2)

Fair Value (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Impaired Loans- Applies to all loan classes, Fair Value	$ 1,775	$ 4,604
Real estate held for sale - Applies to all classes, Fair Value	705	227
Range Of Input 10-20% [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Impaired Loans- Applies to all loan classes, Fair Value		$ 4,604
Valuation Technique, Fair Value		Appraisals which utilize sales comparison, net income and cost approach
Unobservable Inputs, Fair Value		Discounts for collection issues and changes in market conditions
Fair Value, Range of Input, Minimum		10.00%
Fair Value, Range of Input, Maximum		20.00%
Fair Value Measurement Weighted Average Range		11.00%
Range of Input 0% [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Real estate held for sale - Applies to all classes, Fair Value		$ 227
Valuation Technique, Fair Value		Appraisals which utilize sales comparison, net income and cost approach
Unobservable Inputs, Fair Value		Discounts for changes in market conditions
Fair Value, Range of Input, Minimum		0.00%
Fair Value Measurement Weighted Average Range		0.00%
Range Of Input 10-13% [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Impaired Loans- Applies to all loan classes, Fair Value	$ 1,775
Valuation Technique, Fair Value	Appraisals which utilize sales comparison, net income and cost approach
Unobservable Inputs, Fair Value	Discounts for collection issues and changes in market conditions
Fair Value, Range of Input, Minimum	10.00%
Fair Value, Range of Input, Maximum	13.00%
Fair Value Measurement Weighted Average Range	10.86%
Range of Input 20% [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Real estate held for sale - Applies to all classes, Fair Value	$ 705
Valuation Technique, Fair Value	Appraisals which utilize sales comparison, net income and cost approach
Unobservable Inputs, Fair Value	Discounts for changes in market conditions
Fair Value, Range of Input, Minimum	20.00%
Fair Value Measurement Weighted Average Range	20.00%

Fair Value (Details 3)

Fair Value (Details 3) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Financial Assets, Carrying Value:
Cash and cash equivalents, Carrying Value	$ 98,962	$ 113,693	$ 99,003	$ 79,769
Investment securities, Carrying Value	294,602	261,298
Federal Home Loan Bank Stock, Carrying Value	14,217	15,992
Loans, net, including loans held for sale, Carrying Value	2,518,321	2,332,465
Accrued interest receivable, Carrying Value	9,641	8,706
Financial Liabilities, Carrying Value:
Deposits, Carrying Value	2,620,882	2,437,656
Advances from Federal Home Loan Bank, Carrying Value	85,189	84,279
Securities sold under repurchase agreements, Carrying Value	5,741	26,019
Subordinated debentures, Carrying Value	36,083	36,083
Financial Assets, Fair Value:
Cash and cash equivalents, Fair Value	98,962	113,693
Investment securities, Fair Value	294,602	261,299
Loans, net, including loans held for sale, Fair Value	2,501,096	2,315,791
Accrued interest receivable, Fair Value	9,641	8,706
Financial Liabilities, Fair Value:
Deposits, Fair Value	2,613,965	2,444,683
Advances from Federal Home Loan Bank, Fair Value	84,281	83,261
Securities sold under repurchase agreements, Fair Value	5,741	26,019
Subordinated debentures, Fair Value	28,854	35,385
Fair Value, Inputs, Level 1 [Member]
Financial Assets, Fair Value:
Cash and cash equivalents, Fair Value	98,962	113,693
Investment securities, Fair Value	0	1
Loans, net, including loans held for sale, Fair Value	0	0
Accrued interest receivable, Fair Value	18	13
Financial Liabilities, Fair Value:
Deposits, Fair Value	607,198	571,360
Advances from Federal Home Loan Bank, Fair Value	0	0
Securities sold under repurchase agreements, Fair Value	0	0
Subordinated debentures, Fair Value	0	0
Fair Value, Inputs, Level 2 [Member]
Financial Assets, Fair Value:
Cash and cash equivalents, Fair Value	0	0
Investment securities, Fair Value	294,602	261,298
Loans, net, including loans held for sale, Fair Value	6,865	10,830
Accrued interest receivable, Fair Value	1,168	917
Financial Liabilities, Fair Value:
Deposits, Fair Value	2,006,767	1,873,323
Advances from Federal Home Loan Bank, Fair Value	84,281	83,261
Securities sold under repurchase agreements, Fair Value	5,741	26,019
Subordinated debentures, Fair Value	0	0
Fair Value, Inputs, Level 3 [Member]
Financial Assets, Fair Value:
Cash and cash equivalents, Fair Value	0	0
Investment securities, Fair Value	0	0
Loans, net, including loans held for sale, Fair Value	2,494,231	2,304,961
Accrued interest receivable, Fair Value	8,455	7,776
Financial Liabilities, Fair Value:
Deposits, Fair Value	0	0
Advances from Federal Home Loan Bank, Fair Value	0	0
Securities sold under repurchase agreements, Fair Value	0	0
Subordinated debentures, Fair Value	$ 28,854	$ 35,385

Fair Value (Details Textual)

Fair Value (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Option, Qualitative Disclosures Related to Election [Abstract]
Impaired Financing Receivable, Recorded Investment	$ 1,775,000	$ 4,604,000
Impaired Financing Receivables, Provisional Expenses	1,200,000	993,000	$ 1,000,000
Mortgage Servicing Rights at Fair Value	629,000	534,000
Valuation Allowance of Mortgage Servicing Rights	300,000	432,000
Proceeds from Collection of Loans Receivable	132,000	90,000	123,000
Real Estate Held-for-sale, Increase (Decrease) in Fair Value	552,000	20,000	$ 74,000
Impaired Financing Receivable, Related Allowance	595,000	758,000
Collateral Dependent Loan [Member]
Fair Value, Option, Qualitative Disclosures Related to Election [Abstract]
Impaired Financing Receivable, Recorded Investment	1,800,000	4,600,000
Impaired Financing Receivable, Related Allowance	$ 9,000	$ 9,000
Minimum [Member] | Real Estate held for sale [Member]
Fair Value, Option, Qualitative Disclosures Related to Election [Abstract]
Fair Value Inputs, Discount Rate	0.00%
Maximum [Member] | Real Estate held for sale [Member]
Fair Value, Option, Qualitative Disclosures Related to Election [Abstract]
Fair Value Inputs, Discount Rate	20.00%

Derivative Financial Instrume_3

Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Derivatives not designated as hedging instruments
Mortgage Banking Derivatives Assets, Carrying Value	$ 367	$ 609
Mortgage Banking Derivatives Liabilities, Carrying Value	73	11
Mortgage Banking Derivatives, Net Carrying Value	$ 294	$ 598

Derivative Financial Instrume_4

Derivative Financial Instruments (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivatives not designated as hedging instruments
Mortgage Banking Derivatives - Gain (Loss)	$ (304)	$ 107	$ (67)

Derivative Financial Instrume_5

Derivative Financial Instruments (Details Textual) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments at Fair Value, Net	$ 8.6	$ 14.8
Notional Amount of Interest Rate Derivative Instruments Not Designated as Hedging Instruments	$ 11.5	$ 23.2

Quarterly Consolidated Result_3

Quarterly Consolidated Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest income	$ 33,550	$ 31,963	$ 30,299	$ 28,905	$ 28,527	$ 28,081	$ 27,458	$ 24,036	$ 124,717	$ 108,102	$ 87,383
Interest expense	5,058	4,434	3,752	3,218	3,140	3,074	2,826	2,391	16,462	11,431	8,440
Net interest income	28,492	27,529	26,547	25,687	25,387	25,007	24,632	21,645	108,255	96,671	78,943
Provision for loan losses	472	1,376	423	(1,095)	314	462	2,118	55	1,176	2,949	283
Net interest income after provision for loan losses	28,020	26,153	26,124	26,782	25,073	24,545	22,514	21,590	107,079	93,722	78,660
Gain on sale, call or write-down of securities	97	76	0	0	159	158	267	0	173	584	509
Noninterest income	8,272	9,846	10,214	10,703	9,738	9,337	9,873	10,549	39,208	40,081	34,030
Noninterest expense	21,210	22,286	22,665	23,251	21,139	20,440	20,630	23,142	89,412	85,351	71,093
Income before income taxes	15,179	13,789	13,673	14,234	13,831	13,600	12,024	8,997	56,875	48,452	41,597
Income taxes	3,082	2,483	2,564	2,497	4,431	4,219	3,677	3,857	10,626	16,184	12,754
Net income	$ 12,097	$ 11,306	$ 11,109	$ 11,737	$ 9,400	$ 9,381	$ 8,347	$ 5,140	$ 46,249	$ 32,268	$ 28,843
Earnings per common share:
Basic	$ 0.60	$ 0.55	$ 0.54	$ 0.58	$ 0.47	$ 0.46	$ 0.41	$ 0.27	$ 2.27	$ 1.62	$ 1.61
Diluted	$ 0.59	$ 0.55	$ 0.54	$ 0.58	$ 0.46	$ 0.46	$ 0.41	$ 0.27	$ 2.26	$ 1.61	$ 1.60
Average shares outstanding:
Basic	20,313	20,400	20,388	20,330	20,310	20,298	20,294	18,870	20,349	19,932	17,938
Diluted	20,404	20,467	20,492	20,438	20,444	20,418	20,408	18,980	20,349	19,932	17,938

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Securities available for sale and transferred securities:Before Tax Amount
Change in net unrealized gain/(loss) during the period	$ (3,356)	$ 732	$ (4,933)
Reclassification adjustment for net gains included in net income	(173)	(584)	(509)
Net gain on defined benefit postretirement medical plan realized during the period	560	(166)
Reclassification adjustment for net amortization and deferral on defined benefit postretirement medical plan (included in compensation and benefits)	18	19
Total other comprehensive income	(2,951)	2
Securities available for sale and transferred securities: Tax Effect
Change in net unrealized gain/(loss) during the period	(706)	256
Reclassification adjustment for net gains included in net income	(36)	(204)
Net gain on defined benefit postretirement medical plan realized during the period	200	(59)
Reclassification adjustment for net amortization and deferral on defined benefit postretirement medical plan (included in compensation and benefits)	3	7
Total other comprehensive income	(539)	0
Securities available for sale and transferred securities: Net of Tax Amount
Change in net unrealized gain/(loss) during the period	(2,650)	477
Reclassification adjustment for net gains included in net income	(137)	(380)
Net gain on defined benefit postretirement medical plan realized during the period	360	(107)
Reclassification adjustment for net amortization and deferral on defined benefit postretirement medical plan (included in compensation and benefits)	15	12
Total other comprehensive income (loss)	$ (2,412)	$ 2	$ (3,407)

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Securities Available For Sale, Beginning balance	$ 601	$ 504
Securities Available For Sale, Other comprehensive income before reclassifications	(2,651)	477
Securities Available For Sale, Amounts reclassified from accumulated other comprehensive loss	(136)	(380)
Securities Available For Sale, Net other comprehensive income during period	(2,787)	97
Securities Available For Sale, Reclassification adjustment upon adoption of ASU 2018-02	129
Securities Available For Sale, Ending balance	(2,057)	601
Post-retirement Benefit, Beginning balance	(384)	(289)
Post-retirement Benefit, Other comprehensive income before reclassifications	360	(108)
Post-retirement Benefit, Amounts reclassified from accumulated other comprehensive loss	15	13
Post-retirement Benefit, Net other comprehensive income during period	375	(95)
Post-retirement Benefit, Reclassification adjustment upon adoption of ASU 2018-02	(82)
Post-retirement Benefit, Ending balance	(91)	(384)
Accumulated Other Comprehensive Income, Beginning balance	217	215
Accumulated Other Comprehensive Income, Other comprehensive income before reclassifications	(2,291)	369
Accumulated Other Comprehensive Income, Amounts reclassified from accumulated other comprehensive loss	(121)	(367)
Accumulated Other Comprehensive Income, Net other comprehensive income during period	(2,412)	2
Accumulated Other Comprehensive Income (Loss), Reclassification adjustment upon adoption of ASU 2018-02	47
Accumulated Other Comprehensive Income, Ending balance	$ (2,148)	$ 217