Reliant Bancorp (RBNC) 10-K 8 Mar 19 2018 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2018	Mar. 07, 2019	Jun. 29, 2018
Document Information [Abstract]
Entity Registrant Name	Reliant Bancorp, Inc.
Entity Central Index Key	1,606,440
Trading Symbol	rbnc
Current Fiscal Year End Date	--12-31
Entity Filing Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		11,503,492
Entity Public Float			$ 300,518,107
Document Type	10-K
Document Period End Date	Dec. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	FY
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 34,807	$ 20,497
Federal funds sold	371	171
Total cash and cash equivalents	35,178	20,668
Securities available for sale	296,323	220,201
Loans, net	1,220,184	762,488
Mortgage loans held for sale, net	15,823	45,322
Accrued interest receivable	8,214	5,744
Premises and equipment, net	22,033	9,790
Restricted equity securities, at cost	11,690	7,774
Other real estate, net	1,000	0
Cash surrender value of life insurance contracts	45,513	33,663
Deferred tax assets, net	7,428	1,099
Goodwill	43,642	11,404
Core deposit intangibles	8,219	1,280
Other assets	9,091	5,601
TOTAL ASSETS	1,724,338	1,125,034
Deposits
Demand	216,937	131,996
Interest-bearing demand	154,218	88,230
Savings and money market deposit accounts	401,308	205,230
Time	665,440	458,063
Total deposits	1,437,903	883,519
Accrued interest payable	1,063	305
Subordinated debentures	11,603	0
Federal Home Loan Bank advances	57,498	96,747
Dividends payable	1,036	542
Other liabilities	6,821	3,784
TOTAL LIABILITIES	1,515,924	984,897
STOCKHOLDERS’ EQUITY
Preferred stock, $1 par value; 10,000,000 shares authorized; no shares issued to date	0	0
Common stock, $1 par value; 30,000,000 shares authorized; 11,530,810 and 9,034,439 shares issued and outstanding at December 31, 2018 and 2017, respectively	11,531	9,034
Additional paid-in capital	173,238	112,437
Retained earnings	27,329	17,189
Accumulated other comprehensive income (loss)	(3,684)	1,477
TOTAL STOCKHOLDERS’ EQUITY	208,414	140,137
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,724,338	$ 1,125,034

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	11,530,810	9,034,439
Common stock, shares outstanding (in shares)	11,530,810	9,034,439

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
INTEREST INCOME
Interest and fees on loans	$ 58,351	$ 34,176	$ 31,905
Interest and fees on loans held for sale	1,278	868	773
Interest on investment securities, taxable	1,836	691	724
Interest on investment securities, nontaxable	6,605	3,904	2,211
Federal funds sold and other	1,155	519	402
TOTAL INTEREST INCOME	69,225	40,158	36,015
Deposits
Demand	366	173	182
Savings and money market deposit accounts	2,589	748	632
Time	9,862	4,095	1,835
Federal Home Loan Bank advances and other	1,855	655	714
Subordinated debentures	724	0	0
TOTAL INTEREST EXPENSE	15,396	5,671	3,363
NET INTEREST INCOME	53,829	34,487	32,652
PROVISION FOR LOAN LOSSES	1,035	1,316	968
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	52,794	33,171	31,684
NONINTEREST INCOME
Service charges on deposit accounts	3,419	1,251	1,239
Gains on mortgage loans sold, net	4,418	3,675	6,317
Gain on securities transactions, net	43	59	36
Gain on sale of other real estate	259	27	301
Gain (loss) on disposal of premises and equipment	13	(52)	0
Other	1,494	1,050	907
TOTAL NONINTEREST INCOME	9,646	6,010	8,800
NONINTEREST EXPENSE
Salaries and employee benefits	27,510	18,432	18,256
Occupancy	4,949	3,353	3,174
Information technology	5,333	2,715	2,486
Advertising and public relations	600	264	702
Audit, legal and consulting	2,976	1,508	1,287
Federal deposit insurance	793	399	438
Provision for losses on other real estate	0	0	70
Merger expenses	2,774	1,426	0
Other operating	5,626	2,979	3,961
TOTAL NONINTEREST EXPENSE	50,561	31,076	30,374
INCOME BEFORE PROVISION FOR INCOME TAXES	11,879	8,105	10,110
INCOME TAX EXPENSE	1,372	1,942	2,213
CONSOLIDATED NET INCOME	10,507	6,163	7,897
NONCONTROLLING INTEREST IN NET LOSS OF SUBSIDIARY	3,578	1,083	1,039
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 14,085	$ 7,246	$ 8,936
Basic net income attributable to common shareholders, per share (in dollars per share)	$ 1.24	$ 0.89	$ 1.18
Diluted net income attributable to common shareholders, per share (in dollars per share)	$ 1.23	$ 0.88	$ 1.16

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 10,507	$ 6,163	$ 7,897
Other comprehensive income (loss)
Net unrealized gains (losses) on available-for-sale securities, net of tax of $1,513, $(2,102) and $1,275 for the years ended December 31, 2018, 2017 and 2016, respectively	(4,277)	3,384	(2,058)
Net unrealized losses on interest rate swap derivatives, net of tax of $301 for the year ended December 31, 2018	(852)	0	0
Reclassification adjustment for gains included in net income, net of tax of $11, $23 and $14 for the years ended December 31, 2018, 2017 and 2016, respectively	(32)	(36)	(22)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	(5,161)	3,348	(2,080)
TOTAL COMPREHENSIVE INCOME	$ 5,346	$ 9,511	$ 5,817

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net unrealized gains (losses) on available-for-sale securities, tax	$ 1,513	$ (2,102)	$ 1,275
Net unrealized losses on interest rate swap derivatives, tax	301	0	0
Reclassification adjustment for gains included in net income, tax	$ 11	$ 23	$ 14

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	COMMON STOCK	ADDITIONAL PAID-IN CAPITAL	RETAINED EARNINGS	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	NONCONTROLLING INTEREST
BALANCE (in shares) at Dec. 31, 2015		7,279,620
BALANCE at Dec. 31, 2015	$ 96,751	$ 7,280	$ 84,520	$ 4,987	$ (36)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	$ 251		251
Exercise of stock options (in shares)	476,889	476,889
Exercise of stock options	$ 4,772	$ 477	4,295
Restricted stock awards (in shares)		23,800
Restricted stock awards	0	$ 23	(23)
Restricted stock forfeiture (in shares)		(2,000)
Restricted stock forfeiture	0	$ (2)	2
Noncontrolling interest contributions	1,039					1,039
Cash dividend declared to common shareholders	(1,711)			(1,711)
Net income (loss)	7,897			8,936		(1,039)
Other comprehensive income (loss)	(2,080)				(2,080)
BALANCE (in shares) at Dec. 31, 2016		7,778,309
BALANCE at Dec. 31, 2016	106,919	$ 7,778	89,045	12,212	(2,116)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	$ 616		616
Exercise of stock options (in shares)	72,080	72,080
Exercise of stock options	$ 823	$ 72	751
Restricted stock awards (in shares)		50,050
Restricted stock awards	0	$ 50	(50)
Restricted stock forfeiture (in shares)		(3,000)
Restricted stock forfeiture	0	$ (3)	3
Common stock net of issuance cost of $1,805 (in shares)		1,137,000
Common stock net of issuance cost of $1,805	23,209	$ 1,137	22,072
Noncontrolling interest contributions	1,083					1,083
Cash dividend declared to common shareholders	(2,024)			(2,024)
Net income (loss)	6,163			7,246		(1,083)
Reclassification of federal income tax rate change	0			(245)	245
Other comprehensive income (loss)	$ 3,348				3,348
BALANCE (in shares) at Dec. 31, 2017	9,034,439	9,034,439
BALANCE at Dec. 31, 2017	$ 140,137	$ 9,034	112,437	17,189	1,477	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	$ 923		923
Exercise of stock options (in shares)	30,001	30,001
Exercise of stock options	$ 398	$ 30	368
Restricted stock awards (in shares)		51,710
Restricted stock awards	0	$ 52	(52)
Restricted stock forfeiture (in shares)		(1,550)
Restricted stock forfeiture	0	$ (2)	2
Conversion shares issued to shareholders' of Community First, Inc. (in shares)		2,416,444
Conversion shares issued to shareholders' of Community First, Inc.	61,983	$ 2,417	59,566
Redemption of common stock (in shares)		(234)
Shares acquired from dissenting shareholder	(6)		(6)
Noncontrolling interest contributions	3,578					3,578
Cash dividend declared to common shareholders	(3,945)			(3,945)
Net income (loss)	10,507			14,085		(3,578)
Other comprehensive income (loss)	$ (5,161)				(5,161)
BALANCE (in shares) at Dec. 31, 2018	11,530,810	11,530,810
BALANCE at Dec. 31, 2018	$ 208,414	$ 11,531	$ 173,238	$ 27,329	$ (3,684)	$ 0

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Stock issuance costs		$ 1,805
RETAINED EARNINGS
Cash dividend declared to common shareholders, per share (in dollars per share)	$ 0.33	$ 0.24	$ 0.22

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
Consolidated net income	$ 10,507	$ 6,163	$ 7,897
Reclassification of federal income tax rate change	0	(245)	0
Adjustments to reconcile consolidated net income to net cash provided by (used in) operating activities
Provision for loan losses	1,035	1,316	968
Provision to reflect lower of cost or market value of mortgage loans held for sale	0	(160)	160
Deferred income taxes	380	504	235
Gain (loss) on disposal of premises and equipment	(13)	52	0
Depreciation and amortization of premises and equipment	1,697	1,017	976
Net amortization of securities	3,182	2,030	1,551
Net realized gains on sales of securities	(43)	(59)	(36)
Gains on mortgage loans sold, net	(4,418)	(3,675)	(6,317)
Stock-based compensation expense	923	616	251
Realization of gain on other real estate	(259)	(27)	(301)
Provision for losses on other real estate	0	0	70
Increase in cash surrender value of life insurance contracts	(1,186)	(836)	(750)
Mortgage loans originated for resale	(141,783)	(157,220)	(158,617)
Proceeds from sale of mortgage loans	176,610	127,564	208,036
Other accretion, net	(756)	(377)	(1,331)
Change in
Accrued interest receivable	(1,305)	(1,958)	(690)
Other assets	(372)	4,371	(6,580)
Accrued interest payable	326	198	52
Other liabilities	(2,260)	403	1,501
TOTAL ADJUSTMENTS	31,758	(26,241)	39,178
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	42,265	(20,323)	47,075
INVESTING ACTIVITIES
Cash received from merger	33,128	0	0
Activities in available for sale securities
Purchases	(106,893)	(95,430)	(59,332)
Sales	100,737	18,688	31,782
Maturities, prepayments and calls	12,987	6,763	9,255
Purchases of restricted equity securities	(2,190)	(641)	(889)
Loan originations and payments, net	(145,090)	(105,478)	(48,469)
Purchase of buildings, leasehold improvements, and equipment	(4,342)	(1,766)	(873)
Proceeds from sale of other real estate	1,947	0	1,313
Improvement of other real estate	0	0	(16)
Purchase of life insurance contracts	0	(8,000)	(4,000)
NET CASH USED IN INVESTING ACTIVITIES	(109,716)	(185,864)	(71,229)
FINANCING ACTIVITIES
Net change in deposits	121,960	119,685	124,006
Net change in federal funds purchased	0	(3,671)	3,671
Net change in advances from Federal Home Loan Bank	(39,195)	64,514	(103,418)
Issuance of common stock	398	24,032	4,772
Shares acquired from dissenting shareholder	(6)	0	0
Noncontrolling interest contributions received	2,255	1,245	285
Cash dividends paid on common stock	(3,451)	(3,193)	(1,489)
NET CASH PROVIDED BY FINANCING ACTIVITIES	81,961	202,612	27,827
NET CHANGE IN CASH AND CASH EQUIVALENTS	14,510	(3,575)	3,673
CASH AND CASH EQUIVALENTS - BEGINNING OF PERIOD	20,668	24,243	20,570
CASH AND CASH EQUIVALENTS - END OF PERIOD	35,178	20,668	24,243
Cash paid during the period for
Interest	14,638	5,473	3,311
Taxes	1,400	1,750	3,091
Non-cash investing and financing activities
Unrealized gain (loss) on securities available-for-sale	(6,295)	5,380	(3,792)
Unrealized gain (loss) on derivatives	(690)	47	423
Change in due to/from noncontrolling interest	3,578	1,083	754
Foreclosures transferred from loans to other real estate	1,060	0	0
Dividends declared, not paid	$ 1,036	$ 542	$ 1,711

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations Reliant Bancorp, Inc. began organizational activities in 2005. The Company provides financial services through its offices in Williamson, Robertson, Davidson, Sumner, Rutherford, Maury, Hickman and Hamilton Counties in Tennessee. Its primary deposit products are checking, savings, and term certificate accounts, and its primary lending products are commercial and residential construction loans, commercial loans, installment loans and lines secured by home equity. Substantially all loans are secured by specific items of collateral including commercial and residential real estate, business assets, and consumer assets. Commercial loans are expected to be repaid from cash flow from operations of businesses. On January 1, 2018, Community First, Inc. a community banking organization headquartered in Columbia, Tennessee was merged with and into the Company. See Note 22. Basis of Presentation The accounting and reporting policies of Reliant Bancorp, Inc. conform to accounting principles generally accepted in the United States of America and to general practices within the banking industry. The following is a brief summary of the significant policies. The consolidated financial statements as of and for the periods presented include the accounts of Reliant Bancorp Inc., Reliant Bank, Community First TRUPS Holding Company, which is wholly owned by Reliant Bancorp Inc., (“TRUPS”), Reliant Investment Holdings, LLC ("Holdings") which is 100% wholly owned by Reliant Bank, and Reliant Mortgage Ventures, LLC ("RMV"), of which Reliant Bank controls 51% of the governance rights. Reliant Bancorp Inc., Reliant Bank, TRUPS, Holdings and RMV, are collectively referred to herein as the “Company”. As described in the notes to our annual consolidated financial statements, all significant intercompany balances and transactions have been eliminated in consolidation. The accounting and reporting policies of the Company conform to accounting principles generally accepted in the United States of America ("U.S. GAAP") and to general practices in the banking industry. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions based on available information. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to determination of the allowance for loan losses, the valuation of other real estate, the valuation of debt and equity securities, the valuation of deferred tax assets and fair values of financial instruments. Concentrations At December 31, 2018 , the Company had significant credit exposures to borrowers in real estate. If this industry experiences another economic slowdown and, as a result, the borrowers in this industry are unable to meet the obligations of their existing loan agreements, earnings could be negatively impacted. The Company is concentrated in the Tennessee regional market and the operating results are impacted by the economic conditions of that area. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Cash and Cash Equivalents For purposes of reporting cash flows, cash and cash equivalents include cash on hand, deposits with other financial institutions with maturities less than 90 days, and federal funds sold. Generally, federal funds sold are purchased and sold for one-day periods. Net cash flows are reported for customer loan and deposit transactions, federal funds sold, and short-term Federal Home Loan Bank borrowings. The Company maintains deposits in excess of the federal insurance amounts with other financial institutions. Management makes deposits only with financial institutions it considers financially sound. Federal funds sold of $371 and $171 at December 31, 2018 and 2017 , respectively, were invested in one financial institution. Such funds were unsecured and matured the next business day. Securities The Company classifies its securities in one of two categories: held to maturity and available for sale. Held to maturity securities are those securities for which the Company has the ability and intent to hold until maturity. Securities are classified as available for sale when they might be sold before maturity. The Company had no held to maturity securities at December 31, 2018 and 2017 , or in the three year period ended December 31, 2018 . Interest income includes purchase premiums and discounts amortized or accreted over the life of the related security as an adjustment to the yield without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Gains and losses on sales are recorded on the trade date and determined using the specific identification method. When the fair value of a debt security has declined below the amortized cost at the measurement date, if an entity intends to sell a security or is more likely than not to sell the security before the recovery of the security’s cost basis, the entity must recognize the other-than-temporary impairment (“OTTI”) in earnings. For a debt security with a fair value below the amortized cost at the measurement date where it is more likely than not that an entity will not sell the security before the recovery of its cost basis, but an entity does not expect to recover the entire cost basis of the security, the security is classified as OTTI. The related OTTI loss on the debt security will be recognized in earnings to the extent of the credit losses, with the remaining impairment loss recognized in accumulated other comprehensive income. In estimating OTTI losses, management considers: the length of time and extent that fair value of the security has been less than the cost of the security, the financial condition and near term prospects of the issuer, cash flow, stress testing analysis on securities, when applicable, and the Company’s ability and intent to hold the security for a period sufficient to allow for any anticipated recovery in fair value. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal balance outstanding, net of unearned interest, deferred loan fees, and an allowance for loan losses. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized in interest income using a straight-line method without anticipating prepayments. This treatment does not materially differ from the level interest yield method. Past due status is determined based on the contractual terms of the note. The accrual of interest is discontinued when a loan becomes 90 days past due according to the contractual terms of the note unless it is well collateralized and in the process of collection, or when management believes, after considering economic and business conditions and collection efforts, that the principal or interest will not be collectible in the normal course of business. When a loan is placed on non-accrual status, previously accrued and uncollected interest is charged against interest income on loans. When full collection of the remaining book balance is uncertain, interest payments received are applied to the principal balance outstanding. In some cases, when the remaining book balance of the loan is deemed fully collectible, payments are treated as interest income on a cash basis. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. The restructuring of a loan is considered a “troubled debt restructuring” if the borrower is experiencing financial difficulties and the Company has granted a concession. Concessions may include interest rate reductions or below market interest rates, principal forgiveness, restructuring amortization schedules and other actions intended to minimize potential losses. Allowance for Loan Losses The allowance for loan losses is a valuation allowance for probable incurred credit losses. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance. Management estimates the allowance balance required using historical loan loss experience, the nature and volume of the portfolio, information about specific borrower situations and estimated collateral values, current economic conditions (national and local), and other factors such as changes in interest rates, portfolio concentrations, changes in the experience, ability, and depth of the lending function, levels of and trends in charged-off loans, recoveries, past due loans and volume and severity of classified loans. The allowance consists of specific and general components. The specific component relates to loans that are individually classified as impaired. The general component covers non-impaired loans and is based on historical loss experience adjusted for current factors. The entire allowance is available for any loan that, in management’s judgment, should be charged-off. A loan is impaired when full payment under the loan terms is not expected. All classified loans and loans on non-accrual status are individually evaluated for impairment. Factors considered in determining if a loan is impaired include the borrower’s ability to repay amounts owed, collateral deficiencies, the risk rating of the loan and economic conditions affecting the borrower’s industry, among other things. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported, net, at the present value of estimated future cash flows using the loan’s existing rate or at the fair value (less estimated costs to sell) of collateral if repayment is expected solely from the collateral. Interest payments on impaired loans are typically applied to principal unless the principal amount is deemed fully collectible, in which case interest is recognized on a cash basis. When recognition of interest income on a cash basis is appropriate, the amount of income recognized is limited to what would have been accrued on the remaining principal balance at the contractual rate. Cash payments received over this limit, and not applied to reduce the loans remaining principal balance, are recorded as recoveries of prior charge-offs until these charge-offs have been fully recovered. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Mortgage Loans Held for Sale Mortgage loans originated with the intent to sell to third party investors are classified as held for sale. Such loans are carried at the lower of aggregate cost or market value, as determined by pricing on an individual loan basis. These loans are typically marketed to potential investors prior to closing the loan with the borrower. Net unrealized losses, if any, are recorded through a valuation allowance and charged to operations. The valuation allowance of $160 established in the year ended December 31, 2016 was removed in the year ended December, 31, 2017. 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 maturity. Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets or the terms of the related lease for leasehold improvements. The range of estimated useful lives for buildings is 30 to 40 years , for leasehold improvements is 3 to 25 years , which correlates with the applicable lease term, and for furniture, fixtures and equipment is 3 to 7 years . Gain or loss on items retired and otherwise disposed of is credited or charged to operations and the cost and related accumulated depreciation are removed from the asset and accumulated depreciation accounts. Expenditures and improvements of premises and equipment are capitalized and those for maintenance and repairs are charged to earnings as incurred. Restricted Equity Securities Each member of the Federal Reserve is required to subscribe to Federal Reserve Bank (“FRB”) stock. The Bank is a member of the Federal Home Loan Bank (“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. These stocks are carried at cost, classified as restricted equity securities, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income. Other Real Estate Real estate acquired in the settlement of loans is initially recorded at estimated fair value, less estimated cost to sell, if less than the carrying value of the loan when acquired. Based on periodic evaluations by management, the carrying values are reduced by a direct charge to earnings when they exceed net realizable value. Costs relating to the development and improvement of the property are capitalized up to fair value less cost to sell, while holding costs of the property are charged to expense in the period incurred. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Cash Surrender Value of Life Insurance Contracts The Company is the owner and beneficiary of various life insurance policies on certain key employees. These policies are recorded at their cash surrender values. Impairment of Long-Term Assets Premises and equipment and other long-term assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are written down to fair value, with a corresponding charge to earnings. Goodwill Goodwill represents that excess of the purchase price of over the fair value of assets and liabilities acquired in a 2018 business acquisition (see Note 22) , 2015 business acquisition and a 2009 business acquisition. Goodwill is evaluated for impairment at least annually and more frequently if events and circumstances indicate that the asset might be impaired. 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. Derivatives At the inception of a derivative contract, the Company designates the derivative as one of three types based on the Company's intentions and belief as to the likely effectiveness as a hedge. These three types are (1) a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment ("fair value hedge"), (2) a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability ("cash flow hedge"), or (3) an instrument with no hedging designation ("stand-alone derivative"). For a fair value hedge, the gain or loss on the derivative, as well as the offsetting loss or gain on the hedged item, are recognized in current earnings as fair values change. For a cash flow hedge, the gain or loss on the derivative is reported in other comprehensive income and is reclassified into earnings in the same periods during which the hedged transaction affects earnings. For both types of hedges, changes in the fair value of derivatives that are not highly effective in hedging the changes in fair value or expected cash flows of the hedged item are recognized immediately in current earnings. Net cash settlements on derivatives that qualify for hedge accounting are recorded in interest income or interest expense, based on the item being hedged. Net cash settlements on derivatives that do not qualify for hedge accounting are reported in non-interest income. Cash flows on hedges are classified in the cash flow statement the same as the cash flows of the items being hedged. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Derivatives, (Continued) The Company formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions at the inception of the hedging relationship. This documentation includes linking fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge's inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting changes in fair values or cash flows of the hedged items. The Company discontinues hedge accounting when it determines that the derivate is no longer effective in offsetting changes in the fair value or cash flows of the hedged item, the derivative is settled or terminates, a hedged forecasted transaction is no longer probable, a hedged firm commitment is no longer firm, or treatment of the derivative as a hedge is not longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as non-interest income. When a fair value hedge is discontinued, the hedged asset or liability is no longer adjusted for changes in fair value and the existing basis adjustment is amortized or accreted over the remaining life of the asset or liability. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income are amortized into earnings over the same periods which the hedged transactions will affect earnings. Stock Based Compensation Compensation cost recognized for stock options and restricted stock awards issued to employees is based on the fair value of these awards at the date of grant. A binomial model is utilized to estimate the fair value of stock options. Compensation cost is recognized over the required service period, generally defined as the vesting period. Additionally, during 2016, the Company elected to adopt the provisions of ASU 2016-09, “Compensation - Stock Compensation (Topic 718 ): Improvements to Employee Share-Based Payment Accounting,” in advance of the required application date of January 1, 2017. Our financial statements for 2016 are presented as if we adopted ASU 2016-09 on January 1, 2016 on a prospective basis and prior periods have not been restated. ASU 2016-09 requires that all income tax effects related to settlements of share-based payment awards be reported in earnings as an increase (or decrease) to income tax expense. Previously, income tax benefits at settlement of an award were reported as an increase (or decrease) to additional paid-in capital to the extent that those benefits were greater than (or less than) the income tax benefits recognized in earnings during the award's vesting period. The requirement to report those income tax effects in earnings has been applied to settlements occurring on or after January 1, 2016 and the impact of applying that guidance reduced reported income tax expense by $478 , or approximately $0.06 per diluted common share for 2016. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Income Taxes Income tax expense or benefit 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 expected amount most likely 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. Management performs an evaluation of all income tax positions taken or expected to be taken in the course of preparing the Company’s income tax returns to determine whether the income tax positions meet a “more likely than not” standard of being sustained under examination by the applicable taxing authorities. Management has performed its evaluation of all income tax positions taken on all open income tax returns and has determined that there were no positions taken that do not meet the “more likely than not” standard. Penalties and interest relating to income taxes are recognized in income tax expense. The Company files income tax returns in the U.S. federal jurisdiction and various states. The Company’s federal and states income tax returns for years prior to fiscal year 2015 are no longer open to examination. Certain returns from years in which net operating losses have occurred are still open for examination by the tax authorities. Earnings Per Share Earnings per share is computed by dividing net income attributable to common shareholders by the weighted-average number of common shares outstanding. Diluted earnings per share is computed by dividing net income attributable to common shareholders by the weighted-average number of common shares outstanding plus shares representing the dilutive effect of stock options outstanding. Retirement Plan The Company has a 401(k) retirement plan covering all employees who elect to participate, subject to certain eligibility requirements. The Plan allows employees to defer up to 100% of their salary, subject to regulatory limitations with the Company matching 100% of the first 6% contributed by the employee. The Company recognizes as expense the amount of matching contributions related to the 401(k) plan. Vesting within the plan is immediate for 100% of deferral and employer contributions. Comprehensive Income Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities available for sale and derivatives. These gains and losses are recognized as a separate component of stockholders’ equity. 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 such matters that will have a material effect on the consolidated financial statements. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Restrictions on Cash Cash on hand or on deposit with the Federal Reserve Bank was required to meet regulatory reserve and clearing requirements. The Company did no t have a reserve balance to maintain at December 31, 2018 . At December 31, 2017 , the Company's reserve requirement was $2,636 . Preferred Shares Preferred shares have rights that can be set when issued as determined by the Board of Directors. Dividend Restriction Banking regulations require maintaining certain capital levels and may limit the dividends paid by the Company to shareholders. Advertising Costs Advertising costs are expensed as incurred and totaled $559 , $264 and $684 for the years ended December 31, 2018 , 2017 and 2016 , respectively . Fair Value Measurements Financial accounting standards relating to fair value measurements establish a framework for measuring fair value. That framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below: Level 1 Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that the Company has the ability to access. Level 2 Inputs to the valuation methodology include: • Quoted prices for similar assets or liabilities in active markets; • Quoted prices for identical or similar assets or liabilities in inactive markets; • Inputs other than quoted prices that are observable for the asset or liability; • Inputs that are derived principally from or corroborated by the observable market data by correlation or other means. If the asset or liability has a specified (contractual) term, the Level 2 input must be observable for substantially the full term of the asset or liability. Level 3 Inputs to the valuation methodology are unobservable and reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. An asset’s or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques should maximize the use of observable inputs and minimize the use of unobservable inputs. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Fair Value Measurements (Continued) Following is a description of the valuation methodologies used for assets and liabilities measured at fair value on a recurring basis: Securities available for sale: The fair values of securities available for sale are determined by obtaining quoted prices on nationally recognized securities exchanges (Level 1 inputs) or matrix pricing, which is a mathematical technique widely used in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities (Level 2 inputs). The Company obtains fair value measurements for securities available for sale from an independent pricing service. The fair value measurements consider observable data that may include benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, cash flows and reference data, including market research publications, among other things. Interest rate swaps: The fair values of interest rate swaps are determined based on discounted future cash flows. Certain assets and liabilities are measured at fair value on a nonrecurring basis; that is, the instruments are not measured at fair value on an ongoing basis, but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). Assets and liabilities measured at fair value on a nonrecurring basis include the following: Impaired loans : The fair value of impaired loans with specific allocations of the allowance for loan losses is generally based on the present value of expected payments using the loan’s effective rate as the discount rate or recent real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available. Such adjustments are typically significant and result in a Level 3 classification of the inputs for determining fair value. Mortgage loans held for sale: Bid quotes are presently used for the fair value estimate of mortgage loans held for sale, while previously the Company used a model as developed and performed by an independent entity to value such loans. Other real estate owned: The fair value of other real estate owned is generally based on recent real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available. Such adjustments are typically significant and result in a Level 3 classification of the inputs for determining fair value. The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company’s valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. 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 5. 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. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Reclassifications Certain reclassifications have been made in the 2017 and 2016 consolidated financial statements to conform to the 2018 presentation. These reclassifications had no effect on total assets, total liabilities or the results of operations previously reported. Recent Authoritative Accounting Guidance The following discusses new authoritative accounting guidance and the related impact on the Company. ASU 2014-09, “ Revenue from Contracts with Customers (Topic 606 )” implements a common revenue standard that clarifies the principles for recognizing revenue. The principle element of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve this principle, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. ASU 2014-09 was originally going to be effective for the Company on January 1, 2018; however, the FASB recently issued ASU 2015-14, “Revenue from Contracts with Customers (Topic 606 ) – Deferral of the Effective Date" which deferred the effective date of ASU 2014-09 by one year to January 1, 2019. Revenue is comprised of net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income. The Company does not expect these changes to have a significant impact on the consolidated financial statements. The Company continues to evaluate the impact of ASU 2014-09 on other components of non-interest income. ASU 2016-01, “ Financial Instruments – Overall (Subtopic 825-10 ): Recognition and Measurement of Financial Assets and Financial Liabilities ." ASU 2016-01, among other things, (i) requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income, (ii) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identi

Securities

Securities	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
SECURITIES	SECURITIES The amortized cost and fair value of available for sale securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) at December 31, 2018 and 2017 were as follows: December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value U. S. Treasury and other U. S. government agencies $ 568 $ — $ (14 ) $ 554 State and municipal 232,589 879 (4,170 ) 229,298 Corporate bonds 3,130 — (113 ) 3,017 Mortgage backed securities 32,172 34 (248 ) 31,958 Asset backed securities 28,635 — (639 ) 27,996 Time deposits 3,500 — — 3,500 Total $ 300,594 $ 913 $ (5,184 ) $ 296,323 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value U. S. Treasury and other U. S. government agencies $ 586 $ — $ (8 ) $ 578 State and municipal 189,576 3,081 (905 ) 191,752 Corporate bonds 1,500 5 (13 ) 1,492 Mortgage backed securities 6,262 3 (96 ) 6,169 Asset backed securities 16,753 45 (88 ) 16,710 Time deposits 3,500 — — 3,500 Total $ 218,177 $ 3,134 $ (1,110 ) $ 220,201 NOTE 2 - SECURITIES (CONTINUED) There were no held to maturity securities as of December 31, 2018 and 2017 . The amortized cost and estimated fair value of available for sale securities at December 31, 2018 are presented below by contractual maturity. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Amortized Cost Estimated Fair Value Due within one year $ 3,358 $ 3,360 Due in one to five years 4,807 4,763 Due in five to ten years 13,576 13,376 Due after ten years 218,046 214,870 Mortgage backed securities 32,172 31,958 Asset backed securities 28,635 27,996 Total $ 300,594 $ 296,323 The following table shows available for sale securities with unrealized losses and their estimated fair value aggregated by investment category and length of time that individual securities had been in a continuous unrealized loss position as of December 31, 2018 : Less than 12 months 12 months or more Total Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Loss U. S. Treasury and other U. S. government agencies $ — $ — $ 555 $ 14 $ 555 $ 14 State and municipal 118,580 2,263 47,223 1,907 165,803 4,170 Corporate bonds 2,526 105 492 8 3,018 113 Mortgage backed securities 17,015 99 5,397 149 22,412 248 Asset backed securities 20,351 383 7,255 256 27,606 639 Total temporarily impaired $ 158,472 $ 2,850 $ 60,922 $ 2,334 $ 219,394 $ 5,184 NOTE 2 - SECURITIES (CONTINUED) The following table shows available for sale securities with unrealized losses and their estimated fair value aggregated by investment category and length of time that individual securities had been in a continuous unrealized loss position as of December 31, 2017 : Less than 12 months 12 months or more Total Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Loss U. S. Treasury and other U.S. government agencies $ 86 $ 1 $ 491 $ 7 $ 577 $ 8 State and municipal 19,899 128 34,946 777 54,845 905 Corporate bonds — — 487 13 487 13 Mortgage backed securities 2,412 14 3,349 82 5,761 96 Asset backed securities 8,971 73 854 15 9,825 88 Total temporarily impaired $ 31,368 $ 216 40,127 894 $ 71,495 $ 1,110 At December 31, 2018 , management had the intent and ability to hold all securities in a loss position for the foreseeable future, and the decline in fair value was largely due to changes in interest rates. The fair value is expected to recover as the securities approach their maturity date and/or market rates decline. There were 242 and 120 securities in an unrealized loss position as of December 31, 2018 and 2017 , respectively. During the years ended December 31, 2018 , 2017 and 2016 , gross realized gains on sales of securities were $82 , $97 and $359 , respectively, and gross realized losses were $39 , $38 and $323 , respectively. Securities pledged at December 31, 2018 and 2017 had a market value of $70,097 and $78,220 , respectively, and were pledged to collateralize Federal Home Loan Bank advances, Federal Reserve advances and municipal deposits. At December 31, 2018 and 2017 , there were no holdings of securities of any one issuer, other than the U.S. government and it's agencies, in an amount greater than 10% of stockholders’ equity.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
LOANS AND ALLOWANCE FOR LOAN LOSSES	LOANS AND ALLOWANCE FOR LOAN LOSSES Loans at December 31, 2018 and 2017 were comprised as follows: December 31, 2018 December 31, 2017 Commercial, Industrial and Agricultural $ 213,850 $ 138,706 Real Estate 1-4 Family Residential 225,863 111,932 1-4 Family HELOC 88,112 72,017 Multi-family and Commercial 447,840 261,044 Construction, Land Development and Farmland 220,801 156,452 Consumer 20,495 17,605 Other 14,106 14,694 Total 1,231,067 772,450 Less Deferred loan fees (costs) (9 ) 231 Allowance for possible loan losses 10,892 9,731 Loans, net $ 1,220,184 $ 762,488 At December 31, 2018 and 2017 , loans are recorded net of purchase discounts of $4,525 and $272 , respectively. Activity in the allowance for loan losses by portfolio segment was as follows for the year ended December 31, 2018 : Commercial Industrial and Agricultural Multi-family and Commercial Construction Land Development and Farmland 1-4 Family Residential Real Estate Beginning balance $ 2,538 $ 3,166 $ 2,434 $ 773 Charge-offs (381 ) (76 ) (215 ) (36 ) Recoveries 590 221 44 12 Provision (996 ) 1,118 237 584 Ending balance $ 1,751 $ 4,429 $ 2,500 $ 1,333 1-4 Family HELOC Consumer Other Total Beginning balance $ 595 $ 183 $ 42 $ 9,731 Charge-offs (6 ) (26 ) (47 ) (787 ) Recoveries 10 34 2 913 Provision 57 (7 ) 42 1,035 Ending balance $ 656 $ 184 $ 39 $ 10,892 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Activity in the allowance for loan losses by portfolio segment was as follows for the year ended December 31, 2017 : Commercial Industrial and Agricultural Multi-family and Commercial Construction Land Development and Farmland 1-4 Family Residential Real Estate Beginning balance $ 2,432 $ 2,737 $ 1,786 $ 1,178 Charge-offs (976 ) — (45 ) (14 ) Recoveries 378 — 5 — Provision 704 429 688 (391 ) Ending balance $ 2,538 $ 3,166 $ 2,434 $ 773 1-4 Family HELOC Consumer Other Total Beginning balance $ 704 $ 208 $ 37 $ 9,082 Charge-offs — (36 ) — (1,071 ) Recoveries 19 2 — 404 Provision (128 ) 9 5 1,316 Ending balance $ 595 $ 183 $ 42 $ 9,731 Activity in the allowance for loan losses by portfolio segment was as follows for the year ended December 31, 2016 : Commercial Industrial and Agricultural Multi-family and Commercial Construction Land Development and Farmland 1-4 Family Residential Real Estate Beginning balance $ 2,198 $ 2,591 $ 894 $ 1,214 Charge-offs (84 ) — — (25 ) Recoveries 323 18 6 66 Provision (5 ) 128 886 (77 ) Ending balance $ 2,432 $ 2,737 $ 1,786 $ 1,178 1-4 Family HELOC Consumer Other Total Beginning balance $ 699 $ 192 $ 35 $ 7,823 Charge-offs — — (36 ) (145 ) Recoveries 11 12 — 436 Provision (6 ) 4 38 968 Ending balance $ 704 $ 208 $ 37 $ 9,082 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) The allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of December 31, 2018 was as follows: Commercial Industrial and Agricultural Multi-family and Commercial Construction Land Development and Farmland 1-4 Family Residential Real Estate Allowance for loan losses Individually evaluated for impairment $ 38 $ — $ 17 $ — Acquired with credit impairment — — — — Collectively evaluated for impairment 1,713 4,429 2,483 1,333 Total $ 1,751 $ 4,429 $ 2,500 $ 1,333 Loans Individually evaluated for impairment $ 978 $ 1,160 $ 1,780 $ 1,246 Acquired with credit impairment 40 232 1,751 262 Collectively evaluated for impairment 212,832 446,448 217,270 224,355 Total $ 213,850 $ 447,840 $ 220,801 $ 225,863 1-4 Family HELOC Consumer Other Total Allowance for loan losses Individually evaluated for impairment $ — $ — $ — $ 55 Acquired with credit impairment — — — — Collectively evaluated for impairment 656 184 39 10,837 Total $ 656 $ 184 $ 39 $ 10,892 Loans Individually evaluated for impairment $ — $ 12 $ — $ 5,176 Acquired with credit impairment — 11 — 2,296 Collectively evaluated for impairment 88,112 20,472 14,106 1,223,595 Total $ 88,112 $ 20,495 $ 14,106 $ 1,231,067 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) The allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of December 31, 2017 was as follows: Commercial Industrial and Agricultural Multi-family and Commercial Construction Land Development and Farmland 1-4 Family Residential Real Estate Allowance for loan losses Individually evaluated for impairment $ 606 $ — $ 57 $ — Acquired with credit impairment 2 — 2 — Collectively evaluated for impairment 1,930 3,166 2,375 773 Total $ 2,538 $ 3,166 $ 2,434 $ 773 Loans Individually evaluated for impairment $ 3,649 $ 1,921 $ 3,800 $ 2,114 Acquired with credit impairment 276 1,157 1,436 45 Collectively evaluated for impairment 134,781 257,966 151,216 109,773 Total $ 138,706 $ 261,044 $ 156,452 $ 111,932 1-4 Family HELOC Consumer Other Total Allowance for loan losses Individually evaluated for impairment $ — $ — $ — $ 663 Acquired with credit impairment — — — 4 Collectively evaluated for impairment 595 183 42 9,064 Total $ 595 $ 183 $ 42 $ 9,731 Loans Individually evaluated for impairment $ 90 $ — $ — $ 11,574 Acquired with credit impairment — — — 2,914 Collectively evaluated for impairment 71,927 17,605 14,694 757,962 Total $ 72,017 $ 17,605 $ 14,694 $ 772,450 Risk characteristics relevant to each portfolio segment are as follows: Commercial and industrial: The commercial and industrial loan portfolio segment includes commercial and industrial loans to commercial customers for use in normal business operations to finance working capital needs, equipment purchases or other expansion projects. Collection risk in this portfolio is driven by the creditworthiness of underlying borrowers, particularly cash flow from customers’ business operations. Commercial and industrial loans are primarily made based on the identified cash flows of the borrower and secondarily on the underlying collateral provided by the borrower. The cash flows of borrowers, however, may not be as expected and the collateral securing these loans may fluctuate in value. Most commercial and industrial loans are secured by the assets being financed or other business assets such as accounts receivable or inventory and may incorporate a personal guarantee; however, some short-term loans may be made on an unsecured basis. In the case of loans secured by accounts receivable, the availability of funds for the repayment of these loans may be substantially dependent on the ability of the borrower to collect amounts due from its customers. NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Multi-family and commercial real estate: Commercial real estate loans are subject to underwriting standards and processes similar to commercial and industrial loans, in addition to those of real estate loans. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Commercial real estate lending typically involves higher loan principal amounts and the repayment of these loans is generally largely dependent on the successful operation of the property securing the loan or the business conducted on the property securing the loan. Commercial real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. The properties securing the Company’s commercial real estate portfolio are diverse in terms of type. This diversity helps reduce the Company’s exposure to adverse economic events that affect any single market or industry. Management monitors and evaluates commercial real estate loans based on collateral, geography and risk grade criteria. The Company also utilizes third-party experts to provide insight and guidance about economic conditions and trends affecting the market areas it serves. In addition, management tracks the level of owner-occupied commercial real estate loans versus non-owner occupied loans. Non-owner occupied commercial real estate loans are loans secured by multifamily and commercial properties where the primary source of repayment is derived from rental income associated with the property (that is, loans for which 50 percent or more of the source of repayment comes from third party, nonaffiliated, rental income) or the proceeds of the sale, refinancing, or permanent financing of the property. These loans are made to finance income-producing properties such as apartment buildings, office and industrial buildings, and retail properties. Owner-occupied commercial real estate loans are loans where the primary source of repayment is the cash flow from the ongoing operations and business activities conducted by the party, or affiliate of the party, who owns the property. At December 31, 2018 , approximately 27% of the outstanding principal balance of the Company’s commercial real estate loan portfolio was secured by owner-occupied properties. Construction and land development: Loans for non-owner-occupied real estate construction or land development are generally repaid through cash flow related to the operation, sale or refinance of the property. The Company also finances construction loans for owner-occupied properties. A portion of the Company’s construction and land portfolio segment is comprised of loans secured by residential product types (residential land and single-family construction). With respect to construction loans to developers and builders that are secured by non-owner occupied properties that the Company may originate from time to time, the Company generally requires the borrower to have had an existing relationship with the Company and have a proven record of success. Construction and land development loans are underwritten utilizing feasibility studies, independent appraisal reviews, sensitivity analysis of absorption and lease rates, market sales activity, and financial analysis of the developers and property owners. Construction loans are generally based upon estimates of costs and value associated with the complete project. These estimates may be inaccurate. Construction loans often involve the disbursement of funds with repayment substantially dependent on the success of the ultimate project. Sources of repayment for these types of loans may be pre-committed permanent loans from approved long-term lenders, sales of developed property or an interim loan commitment from the Company until permanent financing is obtained. These loans are closely monitored by on-site inspections and are considered to have higher risks than other real estate loans due to their ultimate repayment being sensitive to interest rate changes, governmental regulation of real property, general economic conditions and the availability of long-term financing. NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) 1 - 4 family residential real estate: Residential real estate loans represent loans to consumers or investors to finance a residence. These loans are typically financed on 15 to 30 year amortization terms, but generally with shorter maturities of 5 to 15 years . Many of these loans are extended to borrowers to finance their primary or secondary residence. Loans to an investor secured by a 1-4 family residence will be repaid from either the rental income from the property or from the sale of the property. This loan segment also includes closed-end home equity loans that are secured by a first or second mortgage on the borrower’s residence. This allows customers to borrow against the equity in their home. Loans in this portfolio segment are underwritten and approved based on a number of credit quality criteria including limits on maximum Loan-to-Value (LTV), minimum credit scores, and maximum debt to income. Real estate market values as of the time the loan is made directly affect the amount of credit extended and, in addition, changes in these residential property values influence the depth of potential losses in this portfolio segment. 1 - 4 family HELOC: This loan segment includes open-end home equity loans that are secured by a first or second mortgage on the borrower’s residence. This allows customers to borrow against the equity in their home utilizing a revolving line of credit. These loans are underwritten and approved based on a number of credit quality criteria including limits on maximum LTV, minimum credit scores, and maximum debt to income. Real estate market values as of the time the loan is made directly affect the amount of credit extended and, in addition, changes in these residential property values influence the depth of potential losses in this portfolio segment. Because of the revolving nature of these loans as well as the fact that many represent second mortgages, this portfolio segment can contain more risk than the amortizing 1-4 family residential real estate loans. Consumer: The consumer loan portfolio segment includes non-real estate secured direct loans to consumers for household, family, and other personal expenditures. Consumer loans may be secured or unsecured and are usually structured with short or medium term maturities. These loans are underwritten and approved based on a number of consumer credit quality criteria including limits on maximum LTV on secured consumer loans, minimum credit scores, and maximum debt to income. Many traditional forms of consumer installment credit have standard monthly payments and fixed repayment schedules of one to five years . These loans are made with either fixed or variable interest rates that are based on specific indices. Installment loans fill a variety of needs, such as financing the purchase of an automobile, a boat, a recreational vehicle, or other large personal items, or for consolidating debt. These loans may be unsecured or secured by an assignment of title, as in an automobile loan, or by money in a bank account. In addition to consumer installment loans, this portfolio segment also includes secured and unsecured personal lines of credit as well as overdraft protection lines. Loans in this portfolio segment are sensitive to unemployment and other key consumer economic measures. Non-accrual loans by class of loan were as follows: December 31, 2018 December 31, 2017 Commercial, Industrial and Agricultural $ 279 $ 2,110 Multi-family and Commercial Real Estate — — Construction, Land Development and Farmland 1,294 2,518 1-4 Family Residential Real Estate 2,556 533 1-4 Family HELOC — — Consumer 65 — Total $ 4,194 $ 5,161 Performing non-accrual loans totaled $2,010 and $1,096 at December 31, 2018 and 2017 , respectively. NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Individually impaired loans by class of loans were as follows at December 31, 2018 : Unpaid Recorded Investment with no Allowance Recorded Recorded Investment with Allowance Recorded Total Recorded Related Commercial, Industrial and Agricultural $ 1,247 $ 765 $ 253 $ 1,018 $ 38 Multi-family and Commercial Real Estate 1,670 1,392 — 1,392 — Construction, Land Development and Farmland 3,920 3,359 172 3,531 17 1-4 Family Residential Real Estate 2,243 1,508 — 1,508 — 1-4 Family HELOC — — — — — Consumer 29 23 — 23 — Total $ 9,109 $ 7,047 $ 425 $ 7,472 $ 55 Individually impaired loans by class of loans were as follows at December 31, 2017 : Unpaid Recorded Investment with no Allowance Recorded Recorded Investment with Allowance Recorded Total Recorded Related Commercial, Industrial and Agricultural $ 4,398 $ 2,959 $ 966 $ 3,925 $ 608 Multi-family and Commercial Real Estate 3,427 3,078 — 3,078 — Construction, Land Development and Farmland 5,317 3,249 1,987 5,236 59 1-4 Family Residential Real Estate 2,857 2,159 — 2,159 — 1-4 Family HELOC 90 90 — 90 — Total $ 16,089 $ 11,535 $ 2,953 $ 14,488 $ 667 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Individually impaired loans by class of loans were as follows at December 31, 2016 : Unpaid Recorded Investment with no Allowance Recorded Recorded Investment with Allowance Recorded Total Recorded Related Commercial, Industrial and Agricultural $ 6,383 $ 3,924 $ 1,780 $ 5,704 $ 747 Multi-family and Commercial Real Estate 5,666 2,914 1,974 4,888 6 Construction, Land Development and Farmland 4,124 3,854 171 4,025 17 1-4 Family Residential Real Estate 2,422 2,035 27 2,062 27 1-4 Family HELOC 2,075 1,178 317 1,495 62 Total $ 20,670 $ 13,905 $ 4,269 $ 18,174 $ 859 Interest income recognized on impaired loans totaled $583 , $703 and $848 for the years ended December 31, 2018 , 2017 and 2016 , respectively. The average recorded investment in impaired loans for the years ended December 31, 2018 , 2017 and 2016 , was as follows: 2018 2017 2016 Commercial, Industrial and Agricultural $ 2,333 $ 5,225 $ 6,055 Multi-family and Commercial Real Estate 2,366 4,138 5,837 Construction, Land Development and Farmland 4,571 4,502 3,243 1-4 Family Residential Real Estate 2,468 2,212 2,715 1-4 Family HELOC 72 784 1,854 Consumer 62 — — Total $ 11,872 $ 16,861 $ 19,704 The Company utilizes a risk grading system to monitor the credit quality of the Company’s commercial loan portfolio which consists of commercial and industrial, commercial real estate and construction loans. Loans are graded on a scale of 1 to 9. Grades 1 - 5 are pass credits, grade 6 is special mention, grade 7 is substandard, grade 8 is doubtful and grade 9 is loss. A description of the risk grades are as follows: Grade 1 - Minimal Risk (Pass) This grade includes loans to borrowers with a strong financial position and history of profits and cash flows sufficient to service the debt. These borrowers have well defined sources of primary/secondary repayment, conservatively leveraged balance sheets and the ability to access a wide range of financing alternatives. Collateral securing these loans is negotiable, of sufficient value and in possession of the Company. Risk of loss is unlikely. NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Grade 2 - High Quality (Pass) This grade includes loans to borrowers with a strong financial condition reflecting dependable net profits and cash flows. The borrower has verifiable liquid net worth providing above average asset protection. An identifiable market exits for the collateral. Risk of loss is unlikely. Grade 3 - Above Average (Pass) This grade includes loans to borrowers with a balance sheet that reflects a comfortable degree of leverage and liquidity. Borrowers are profitable and have a sustained record of servicing debt. An identifiable market exits for the collateral, but liquidation could take up to one year. Risk of loss is unlikely. Grade 4 - Average (Pass) This grade includes loans to borrowers with a financial condition that is satisfactory and comparable to industry standards. The borrower has verifiable net worth, providing over time, average asset protection. Borrower cash flows are sufficient to satisfy debt service requirements. Risk of loss is below average. Grade 5 - Acceptable (Management Attention) (Pass) This grade includes loans to borrowers whose loans are performing, but sources of repayment are not documented by the current credit analysis. There are some declining trends in margins, ratios and/or cash flow. Guarantor(s) have strong net worth(s), but assets may be concentrated in real estate or other illiquid investments. Risk of loss is average. Grade 6 - Special Mention Special mention assets have potential weaknesses that may, if not checked or corrected, weaken the asset or inadequately protect the Company’s position at some future date. These assets pose elevated risk, but their weakness does not yet justify a substandard classification. Borrowers may be experiencing adverse operating trends (declining revenues or margins) or an ill proportioned balance sheet (e.g., increasing inventory without an increase in sales, high leverage, tight liquidity). Adverse economic or market conditions, such as interest rate increases or the entry of a new competitor, may also support a special mention rating. Nonfinancial reasons for rating a credit exposure special mention include management problems, pending litigation, an ineffective loan agreement or other material structural weakness, and any other significant deviation from prudent lending practices. The special mention rating is designed to identify a specific level of risk and concern about asset quality . Although a special mention asset has a higher probability of default than a pass asset, its default is not imminent. Grade 7 - Substandard A ‘‘substandard’’ extension of credit is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Extensions of credit so classified should have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard credits, does not have to exist in individual extensions of credit classified as substandard. Substandard assets have a high probability of payment default, or they have other well-defined weaknesses. They require supervision that is more intensive by Company management. Substandard assets are generally characterized by current or expected unprofitable operations, inadequate debt service coverage, inadequate liquidity, or marginal capitalization. Repayment may depend on collateral or other credit risk mitigation. NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Grade 8 - Doubtful An extension of credit classified ‘‘doubtful’’ has all the weaknesses inherent in one classified substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. The possibility of loss is extremely high, but because of certain important and reasonably specific pending factors that may work to the advantage of and strengthen the credit, its classification as an estimated loss is deferred until its more exact status may be determined. Pending factors may include a proposed merger or acquisition, liquidation proceedings, capital injection, perfecting liens on additional collateral, or refinancing plans. Generally, the doubtful classification should not extend for a long period of time because in most cases the pending factors or events that warranted the doubtful classification should be resolved either positively or negatively in a reasonable period of time. Grade 9 - Loss Extensions of credit classified ‘‘loss’’ are considered uncollectible and of such little value that their continuance as bankable assets is not warranted. This classification does not mean that the credit has absolutely no recovery or salvage value, but rather that it is not practical or desirable to defer writing off this basically worthless asset even though partial recovery may be affected in the future. Amounts classified loss should be promptly charged off. The Company will not attempt long term recoveries while the credit remains on the Company’s books. Losses should be taken in the period in which they surface as uncollectible. With loss assets, the underlying borrowers are often in bankruptcy, have formally suspended debt repayments, or have otherwise ceased normal business operations. Once an asset is classified loss, there is little prospect of collecting either its principal or interest. Consumer purpose loans are initially assigned a default loan grade of 99 (Pass) and are risk graded (Grade 6, 7, or 8) according to delinquency status when applicable. Credit quality indicators by class of loan were as follows at December 31, 2018 : Pass Special Mention Substandard Total Commercial, Industrial and Agricultural $ 212,761 $ — $ 1,089 $ 213,850 1-4 Family Residential Real Estate 221,546 1,125 3,192 225,863 1-4 Family HELOC 88,112 — — 88,112 Multi-family and Commercial Real Estate 442,127 3,135 2,578 447,840 Construction, Land Development and Farmland 218,053 579 2,169 220,801 Consumer 20,236 — 259 20,495 Other 14,106 — — 14,106 Total $ 1,216,941 $ 4,839 $ 9,287 $ 1,231,067 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Credit quality indicators by class of loan were as follows at December 31, 2017 : Pass Special Mention Substandard Total Commercial, Industrial and Agricultural $ 135,833 $ 5 $ 2,868 $ 138,706 1-4 Family Residential Real Estate 108,426 1,392 2,114 111,932 1-4 Family HELOC 71,927 — 90 72,017 Multi-family and Commercial Real Estate 259,123 — 1,921 261,044 Construction, Land Development and Farmland 149,886 2,998 3,568 156,452 Consumer 17,605 — — 17,605 Other 14,694 — — 14,694 Total $ 757,494 $ 4,395 $ 10,561 $ 772,450 Past due loan balances by class of loan were as follows at December 31, 2018 : 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Past Due Current Total Loans Commercial, Industrial and Agricultural $ 22 $ 153 $ 279 $ 454 $ 213,396 $ 213,850 1-4 Family Residential Real Estate 1,104 335 1,203 2,642 223,221 225,863 1-4 Family HELOC 50 — — 50 88,062 88,112 Multi-family and Commercial Real Estate — 104 — 104 447,736 447,840 Construction, Land Development and Farmland 214 — 171 385 220,416 220,801 Consumer 11 30 46 87 20,408 20,495 Other — — — — 14,106 14,106 Total $ 1,401 $ 622 $ 1,699 $ 3,722 $ 1,227,345 $ 1,231,067 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Past due loan balances by class of loan were as follows at December 31, 2017 : 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Past Due Current Total Loans Commercial, Industrial and Agricultural $ 7 $ — $ 1,548 $ 1,555 $ 137,151 $ 138,706 1-4 Family Residential Real Estate 617 — — 617 111,315 111,932 1-4 Family HELOC — 7 — 7 72,010 72,017 Multi-family and Commercial Real Estate 1,254 — — 1,254 259,790 261,044 Construction, Land Development and Farmland 265 444 2,073 2,782 153,670 156,452 Consumer 14 — — 14 17,591 17,605 Other — — — — 14,694 14,694 Total $ 2,157 $ 451 $ 3,621 $ 6,229 $ 766,221 $ 772,450 At December 31, 2018, there were loans of $6 past due 90 days or more and still accruing interest. There were no loans past due 90 days or more and still accruing interest at December 31, 2017 . Troubled debt restructurings occurring during the year ended December 31, 2018 by class of loan were as follows: Number of Contracts Pre-Modification Oustanding Recorded Investments Post-Modification Oustanding Recorded Investments 1-4 Family Residential Estate 1 $ 1,254 $ 1,254 Multi-family and Commercial Real Estate 1 661 585 Total 2 $ 1,915 $ 1,839 Troubled debt restructurings occurring during the year ended December 31, 2017 by class of loan were as follows: Number of Contracts Pre-Modification Oustanding Recorded Investments Post-Modification Oustanding Recorded Investments Construction, Land Development and Farmland 2 $ 2,110 $ 1,640 Total 2 $ 2,110 $ 1,640 Troubled debt restructurings occurring during the year ended December 31, 2016 by class of loan were as follows: Number of Contracts Pre-Modification Oustanding Recorded Investments Post-Modification Oustanding Recorded Investments 1-4 Family Residential Estate 1 $ 1,712 $ 1,712 Total 1 $ 1,712 $ 1,712 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) During the year ended December 31, 2018 , one modification occurred that consisted of an interest only monthly payment restructure and had no effect on the allowance for loan losses or interested income. The other modification was a restructure of five loans, including purchased credit impaired loans, in which a charge off occurred of $76 . The 1-4 Family Residential loan with a related balance of $1,254 was paid during 2018. During the year ended December 31, 2017 , two loans were modified in a troubled debt restructuring. One modification consisted of a partial charge off totaling $470 , and a payment restructure with the modification having no effect on interest income for the remaining balance of $308 at December 31, 2017. The other modification consisted of a temporary suspension of required monthly payments of a loan with a balance of $108 at December 31, 2017 and had no effect on the allowance for loan losses or interest income. There were no charge offs resulting from the modification during the year ended December 31, 2016 . The modification consisted of changes in the amortization terms of the loans and payment modifications. The modification had no effect on the allowance for loan losses and interest income was not significantly affected. There were no subsequent defaults on loans modified in troubled debt restructurings during the years ended December 31, 2018 , 2017 and 2016 . The Company has acquired loans for which there was, at acquisition, evidence of deterioration of credit quality since origination and it was probable, at acquisition, that not all contractually required payments would be collected. The carrying amount of those loans was as follows at December 31, 2018 and 2017 , respectively: 2018 2017 Commercial, Industrial and Agricultural $ 63 $ 298 Multi-family and Commercial Real Estate 233 1,217 Construction, Land Development and Farmland 1,958 1,508 1-4 Family Residential Real Estate 324 47 1-4 Family HELOC — — Consumer 18 — Total outstanding balance 2,596 3,070 Less remaining purchase discount 300 156 Allowance for loan losses — 4 Carrying amount, net of allowance $ 2,296 $ 2,910 During the the year ended December 31, 2018, loans with non-accretable purchase discounts totaling $146 were paid in full resulting in the recognition of the discounts in interest income. During the year ended December 31, 2017, a loan with non-accretable purchase discount totaling $354 was paid in full resulting in the recognition of the discounts in interest income. During the year ended December 31, 2016, a loan with non-accretable purchase discount totaling $708 was paid in full resulting in the recognition of the discount in interest income. Activity related to the accretable portion of the purchase discount on loans acquired with deteriorated credit quality is as follows for the years ended December 31, 2018 , 2017 and 2016 : 2018 2017 2016 Balance at January 1, $ — $ 87 $ 233 New loans purchased 260 — — Loan charge offs (104 ) — — Accretion income (46 ) (87 ) (146 ) Balance at December 31, $ 110 $ — $ 87 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) The Company decreased the allowance for loan losses on purchased credit impaired loans by $4 , $2 and $241 during the years ended December 31, 2018 , 2017 and 2016 , respectively. In the normal course of business, the Company will enter into various credit arrangements with its executive officers, directors and their affiliates. These arrangements generally take the form of commercial lines of credit, personal lines of credit, mortgage loans, term loans or revolving arrangements secured by personal residences. An analysis of the activity with respect to loans to related parties for the years ended December 31, 2018 , 2017 and 2016 , is as follows: 2018 2017 2016 Balance - January 1, $ 8,581 $ 11,935 $ 10,484 New loans during the year 919 4,356 4,442 Repayments during the year (2,106 ) (7,710 ) (2,991 ) Balance - December 31, $ 7,394 $ 8,581 $ 11,935 During the three year period ended December 31, 2018 , none of these loans were restructured or charged off.

Other Real Estate

Other Real Estate	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
OTHER REAL ESTATE	OTHER REAL ESTATE Other real estate activity for the years ended December 31, 2018 , 2017 and 2016 , was as follows: 2018 2017 2016 Beginning balance $ — $ — $ 1,149 Loans acquired in merger 1,650 — — Loans transferred to other real estate 1,060 — — Allowance to lower of cost or market — — (70 ) Sales of other real estate (1,710 ) — (1,079 ) End of year $ 1,000 $ — $ — Activity in the valuation allowance for the years ended December 31, 2018 , 2017 and 2016 , was as follows: 2018 2017 2016 Beginning balance $ — $ — $ — Provisions/(recoveries) charged/(credited) to expense — — 70 Reductions from sales of other real estate — — (70 ) Direct write-downs — — — End of year $ — $ — $ — Expenses related to foreclosed assets for the years ended December 31, 2018 , 2017 and 2016 , include: 2018 2017 2016 Net gain on sales $ (259 ) $ (27 ) $ (301 ) Provision for unrealized losses — — 70 Operating expenses, net of rental income 50 7 22 Total $ (209 ) $ (20 ) $ (209 ) In connection with the merger with Community First, the Company acquired three real estate parcels. The Company valued the properties at their estimated fair values less costs to sale which totaled $1,650 . At December 31, 2018, there was a 1-4 Family Residential loan in the process of foreclosure with a related balance of $1,048 .

Fair Values of Assets and Liabi

Fair Values of Assets and Liabilities	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
FAIR VALUES OF ASSETS AND LIABILITIES	FAIR VALUES OF ASSETS AND LIABILITIES The following table sets forth the Company’s major categories of assets and liabilities measured at fair value on a recurring basis, by level within the fair value hierarchy, as of December 31, 2018 and 2017 : Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2018 Assets U. S. Treasury and other U. S. government agencies $ 554 $ — $ 554 $ — State and municipal 229,298 — 229,298 — Corporate bonds 3,017 — 3,017 — Mortgage backed securities 31,958 — 31,958 — Asset backed securities 27,996 — 27,996 — Time deposits 3,500 3,500 — — Interest rate swap 467 — 467 — Liabilities Interest rate swap $ 1,183 $ — $ 1,183 $ — December 31, 2017 Assets U. S. Treasury and other U. S. government agencies $ 578 $ — $ 578 $ — State and municipal 191,752 — 191,752 — Corporate bonds 1,492 — 1,492 — Mortgage backed securities 6,169 — 6,169 — Asset backed securities 16,710 — 16,710 — Time deposits 3,500 3,500 — — Interest rate swap 155 — 155 — Liabilities Interest rate swap $ 180 $ — $ 180 $ — NOTE 5 - FAIR VALUES OF ASSETS AND LIABILITIES (CONTINUED) The following table sets forth the Company’s major categories of assets and liabilities measured at fair value on a nonrecurring basis, by level within the fair value hierarchy, as of December 31, 2018 and 2017 : Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2018 Assets Impaired loans $ 370 $ — $ — $ 370 Other real estate owned 1,000 — — 1,000 December 31, 2017 Assets Impaired loans $ 2,286 $ — $ — $ 2,286 The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which we have utilized Level 3 inputs to determine fair value at December 31, 2018 and 2017 : Valuation Techniques (1) Significant Unobservable Inputs Range (Weighted Average) Impaired loans Appraisal Estimated costs to sell 10% Other real estate owned Appraisal Estimated costs to sell 10% (1) The fair value is generally determined through independent appraisals of the underlying collateral, which may include Level 3 inputs that are not identifiable, or by using the discounted cash flow method if the loan is not collateral dependent. Estimated cash flows change and appraised values of the assets or collateral underlying the loans will be sensitive to changes. NOTE 5 - FAIR VALUES OF ASSETS AND LIABILITIES (CONTINUED) Carrying amounts and estimated fair values of financial instruments, by level within the fair value hierarchy, at December 31, 2018 were as follows: Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets Cash and due from banks $ 34,807 $ 34,807 $ 34,807 $ — $ — Federal funds sold 371 371 — 371 — Loans, net 1,220,184 1,206,574 — — 1,206,574 Mortgage loans held for sale 15,823 15,871 — 15,871 — Accrued interest receivable 8,214 8,214 — 8,214 — Restricted equity securities 11,690 11,690 — 11,690 — Financial liabilities Deposits $ 1,437,903 $ 1,434,652 $ — $ — $ 1,434,652 Accrued interest payable 1,063 1,063 — 1,063 — Subordinate debentures 11,603 11,522 — — 11,522 Federal Home Loan Bank advances 57,498 57,434 — — 57,434 Carrying amounts and estimated fair values of financial instruments, by level within the fair value hierarchy, at December 31, 2017 were as follows: Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets Cash and due from banks $ 20,497 $ 20,497 $ 20,497 $ — $ — Federal funds sold 171 171 — 171 — Loans, net 762,488 762,574 — — 762,574 Mortgage loans held for sale 45,322 46,467 — 46,467 — Accrued interest receivable 5,744 5,744 — 5,744 — Restricted equity securities 7,774 7,774 — 7,774 — Financial liabilities Deposits $ 883,519 $ 882,533 $ — $ — $ 882,533 Accrued interest payable 305 305 — 305 — Federal Home Loan Bank advances 96,747 96,754 — — 96,754 NOTE 5 - FAIR VALUES OF ASSETS AND LIABILITIES (CONTINUED) The methods and assumptions used to estimate fair value are described as follows: Carrying amount is the estimated fair value for cash and cash equivalents, accrued interest receivable and payable, restricted equity securities, demand deposits, and variable rate loans or deposits that reprice frequently and fully. For fixed rate loans or deposits and for variable rate loans or deposits with infrequent repricing or repricing limits, fair value is based on discounted cash flows using current market rates applied to the estimated life and credit risk. Fair value of debt is based on current rates for similar financing. The fair value of off-balance-sheet items is not considered material.

Premises and Equipment

Premises and Equipment	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
PREMISES AND EQUIPMENT	PREMISES AND EQUIPMENT The detail of premises and equipment at December 31, 2018 and 2017 is as follows: 2018 2017 Land $ 6,049 $ 1,211 Buildings 8,951 4,717 Construction in progress — 284 Leasehold improvements 7,551 4,727 Furniture, fixtures and equipment 10,311 8,145 32,862 19,084 Less: accumulated depreciation (10,829 ) (9,294 ) $ 22,033 $ 9,790 Depreciation and amortization expense was $1,697 , $1,017 and $976 for the years ended December 31, 2018 , 2017 and 2016 , respectively.

Restricted Equity Securities

Restricted Equity Securities	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
RESTRICTED EQUITY SECURITIES	RESTRICTED EQUITY SECURITIES The Company owned the following restricted equity securities as of December 31, 2018 and 2017 : 2018 2017 Federal Reserve Bank $ 5,735 $ 3,546 Federal Home Loan Bank 5,955 4,228 Total $ 11,690 $ 7,774

Goodwill and Core Deposit Intan

Goodwill and Core Deposit Intangibles	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND CORE DEPOSIT INTANGIBLES	GOODWILL AND CORE DEPOSIT INTANGIBLES The following presents the balances as of December 31, 2018 , and 2017 , of intangible assets acquired in business acquisitions: 2018 2017 Goodwill $ 43,642 $ 11,404 Amortized intangible assets: Core deposit intangibles $ 10,111 $ 2,946 Less accumulated amortization (1,892 ) (1,666 ) $ 8,219 $ 1,280 Amortization expense was $949 , $302 and $356 for the years ended December 31, 2018 , 2017 and 2016 , respectively. Estimated future amortization expense by year as of December 31, 2018 is as follows: 2019 $ 949 2020 949 2021 949 2022 949 2023 865 Thereafter 3,558 Total $ 8,219

Deposits

Deposits	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
DEPOSITS	DEPOSITS Contractual maturities of time deposit accounts for the next five years at December 31, 2018 are as follows: 2019 $ 588,815 2020 49,259 2021 9,934 2022 8,174 2023 9,258 Total $ 665,440 The aggregate amount of overdrafts reclassified to loans receivable was $400 and $118 at December 31, 2018 and 2017 , respectively. At December 31, 2018 and 2017 , time deposits in excess of $250 totaled $330,736 and $264,814 respectively. Deposits from principal officers, directors, and their affiliates at December 31, 2018 and 2017 were $8,376 and $14,280 , respectively.

Federal Home Loan Bank Advances

Federal Home Loan Bank Advances	12 Months Ended
	Dec. 31, 2018
Federal Home Loan Banks [Abstract]
FEDERAL HOME LOAN BANK ADVANCES	FEDERAL HOME LOAN BANK ADVANCES At December 31, advances from the Federal Home Loan Bank were as follows: 2018 2017 Maturities January 2019 through March 2024, fixed rates ranging from 1.22% to 2.86% ($54,000 is due in the year ending December 31, 2019) $ 57,498 $ 96,747 Each advance is payable at its maturity date, with a prepayment penalty for fixed rate advances. At December 31, 2018 , there was $4,407 of advances amortizing on a monthly basis. The weighted average rate of the total borrowings at December 31, 2018 and 2017 was 2.42% and 1.54% , respectively. The weighted average interest rate of the short-term borrowings outstanding at December 31, 2018 and 2017 was 2.46% and 1.43% , respectively. The advances were collateralized by $597,646 and $380,111 of real estate loans at December 31, 2018 and 2017 , respectively. The Company’s additional borrowing capacity was $96,082 and $5,924 at December 31, 2018 and 2017 , respectively. Required future principal payments on Federal Home Loan Bank borrowings are as follows: 2019 $ 53,857 2020 721 2021 963 2022 612 2023 1,117 Thereafter 228 Total $ 57,498

Subordinated Debentures

Subordinated Debentures	12 Months Ended
	Dec. 31, 2018
Brokers and Dealers [Abstract]
SUBORDINATED DEBENTURES	SUBORDINATED DEBENTURES In 2002, Community First, Inc. issued $3,000 of floating rate mandatory redeemable subordinated debentures through a special purpose entity as part of a private offering of trust preferred securities. The securities mature on December 31, 2032; however, the Company can currently repay the securities at any time without penalty, subject to approval from the Federal Reserve Bank ("FRB"). The subordinated debentures bear interest at a floating rate equal to the New York Prime rate plus fifty basis points.The interest rate on the subordinated debentures as of December 31, 2018 was 6.00% . The Company has the right from time to time, without causing an event of default, to defer payments of interest on the debentures for up to twenty consecutive quarterly periods. These debentures are presented in liabilities on the balance sheet but count as Tier 1 capital (with certain limitations applicable) for regulatory capital purposes. In 2005, Community First, Inc.issued $5,000 of floating rate mandatory redeemable subordinated debentures through a special purpose entity as part of a pool offering of trust preferred securities. These securities mature on September 15, 2035, however, the Company can currently repay the securities at any time without penalty, subject to approval from the FRB. The subordinated debentures bear interest at a floating rate equal to the three month London Interbank Offered Rate, ("LIBOR") plus 1.50% . The interest rate on the subordinated debentures as of December 31, 2018 was 4.288% . The Company has the right from time to time, without causing an event of default, to defer payments of interest on the debentures for up to twenty consecutive quarterly periods. These debentures are presented in liabilities on the balance sheet but count as Tier 1 capital for regulatory purposes. NOTE 11 - SUBORDINATED DEBENTURES (CONTINUED) In 2007, Community First, Inc. issued $15,000 of redeemable subordinated debentures through a special purpose entity as part of a pooled offering of trust preferred securities. These subordinated debentures mature in 2037; however, the Company can currently repay the securities at any time without penalty, subject to approval from the FRB. The interest rate on the subordinated debentures was 7.96% until December 15, 2012, and thereafter the subordinated debentures bear interest at a floating rate equal to the three month LIBOR plus 3.0% . At December 31, 2018 , the interest rate was 5.788% . The Company has the right from time to time, without causing an event of default, to defer payments of interest on the junior debentures for up to twenty consecutive quarterly periods. These debentures are presented in liabilities on the balance sheet. On December 20, 2016, TRUPS acquired $10,000 in face amount of trust preferred capital securities issued by Community First Statutory Trust II. These capital securities were purchased from an unaffiliated investor and remain outstanding; however, the securities and the underlying subordinated debentures are eliminated in the Company's consolidated financial statements, The portion of the subordinated debentures qualifying as Tier 1 capital is limited to 25% of total Tier 1 capital. Subordinated debentures in excess of the Tier 1 capital limitation generally qualify as Tier 2 capital. Under the Dodd-Frank Act and the federal regulations issued implementing Basel III, these subordinated debentures will, subject to the limitations described in the preceding sentence, continue to qualify as Tier 1 capital. Distributions on the subordinated debentures are payable quarterly. As of December 31, 2018 , the Company was current in the payment of all interest payments due on its subordinated debentures.

Benefit Plans

Benefit Plans	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
BENEFIT PLANS	BENEFIT PLANS 401(k) Plan The Company has a 401(k) benefit plan that allows employee contributions up to 100% of their compensation, subject to regulatory limitations. The Company matches 100% of the first 6% contributed by the employee. The Company recognized an expense for the years ended December 31, 2018 , 2017 and 2016 of $805 , $450 , and $467 , respectively. Employee Stock Purchase Plan In 2018, the Company adopted an employee stock purchase plan (“ESPP”) under which employees, through payroll deductions, are able to purchase shares of Company common stock. The purchase price is 85% of the lesser of the closing price of the common stock on the first trading date of the relevant offering period or the last trading day of the relevant offering period. The maximum number of shares issuable during any offering period is 200,000 shares and a participant may not purchase more than 2,500 shares during any offering period (and, in any event, no more than $25,000 worth of common stock in any calendar year). In 2018, there were no shares of common stock issued under the ESPP. As of December 31, 2018, there were 200,000 shares available for issuance under the ESPP.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES On December 22, 2017, comprehensive tax reform legislation known as the Tax Cuts and Jobs Act (the “Tax Reform Act”) was signed into law. The Tax Reform Act amends the Internal Revenue Code to reduce U.S. tax rates and modify policies, credits and deductions for individuals and businesses. The Tax Reform Act permanently reduces the U.S. federal corporate income tax rate from 35% to 21% , effective for tax years beginning after 2017. GAAP requires an adjustment to deferred taxes as a result of a change in the corporate tax rate in the period that the change is enacted, with the change recorded to the current year tax provision. Accordingly, the Company has remeasured its deferred tax assets and liabilities at the new tax rate and recorded a one-time noncash tax expense of $620 to deferred income taxes for the year ended December 31, 2017 . This expense resulted in the Company’s higher effective tax rate for that year. NOTE 13 - INCOME TAXES (CONTINUED) The income tax expense consists of the following for the years ended December 31: 2018 2017 2016 Income tax expense Current $ 992 $ 1,438 $ 1,978 Deferred 380 504 235 Total provision for income tax expense $ 1,372 $ 1,942 $ 2,213 A reconciliation of the income tax expense for the years ended December 31, 2018 , 2017 and 2016 from the “expected” tax expense computed by applying the statutory federal income tax rate of 21 percent for 2018 and 34 percent for 2017 and 2016 to income before income taxes is as follows: 2018 2017 2016 Computed “expected” tax expense $ 2,495 21 % $ 2,756 34 % $ 3,437 34 % Increase (decrease) in tax expense resulting from: Federal income tax rate change — — % 620 8 % — — % State tax expense, net of federal tax effect 551 5 % 331 4 % 404 4 % Tax exempt interest (1,422 ) (12 )% (1,452 ) (18 )% (923 ) (9 )% Disallowed interest expense 290 2 % 193 2 % 56 1 % Incentive stock options 19 — % 33 — % 22 — % Cash surrender value of life insurance contracts (249 ) (2 )% (285 ) (4 )% (255 ) (3 )% Officers life insurance expense — — % — — % 7 — % Excess tax benefit from stock compensation (88 ) (1 )% (184 ) (2 )% (478 ) (5 )% Nondeductible merger expenses 12 — % 173 2 % — — % Federal and state tax credits (1,102 ) (9 )% (667 ) (8 )% (499 ) (5 )% Benefit of subsidiary net loss — — % — — % — — % Subsidiary disregarded for federal taxes 763 6 % 347 4 % 378 4 % Others as a group 103 1 % 77 1 % 64 1 % Total income tax expense $ 1,372 11 % $ 1,942 23 % $ 2,213 22 % The Company files a separate Federal tax return for the operations of the mortgage banking and banking operations. The taxable income or losses of the mortgage banking operations are included in the respective returns of the Company and non-controlling members for Federal purposes. The Company’s income tax filings from the years ending December 31, 2015 to present remain open to examination by tax jurisdictions. NOTE 13 - INCOME TAXES (CONTINUED) Significant components of deferred tax assets as of December 31, 2018 and 2017 are as follows: 2018 2017 Organizational and start-up costs $ 68 $ 98 Core deposit intangible (2,046 ) (215 ) Acquisition fair value adjustments 817 30 Allowance for loan losses 2,577 1,876 Loan fees (costs) (1 ) 60 Other real estate 577 — Premises and equipment (791 ) (427 ) Unrealized (gain) loss on available for sale securities 1,115 (528 ) Unrealized loss on derivatives 187 7 Non-accrual loans 280 170 Acquired net operating losses 2,966 — Acquired tax credits net of basis adjustments 1,005 — Deferred compensation 443 — Other 231 28 Total $ 7,428 $ 1,099 State $ 688 $ 114 Federal 6,740 985 Net deferred tax asset $ 7,428 $ 1,099 In assessing the future realization of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management determined that as of December 31, 2018 , it was more likely than not that all deferred tax assets would be realized. At December 31, 2018, related to the merger with Community First, Inc., the Company has a federal net operating loss carryforward of $14,126 , which begins expiring in 2031and the Company is limited to utilizing $1,215 annually. The Securities and Exchange Commission issued Staff Accounting Bulletin No. 118 on December 22, 2017, which provides for a one-year measurement period that allows businesses time to evaluate the financial statement implications of the Tax Reform Act. Companies are required to disclose in financial filings whether their accounting for the income tax effects of the Tax Reform Act is complete, incomplete but reasonably estimated, or incomplete with no estimate provided. The measurement period allows businesses to gather the information necessary to prepare and analyze the income tax accounting effects of the Tax Reform Act on financial statements issued during the measurement period. During the measurement period, an entity may need to reflect adjustments to provisional amounts previously recorded after obtaining, preparing, or analyzing additional information about facts and circumstances that existed as of the enactment date that, if known, would have affected the income tax effects initially reported as provisional amounts. Such adjustments to provisional amounts included in an entity’s financial statements during the measurement period would be included in income from continuing operations as an adjustment to income tax expense or benefit in the reporting period the amounts are determined.

Stock-based Compensation

Stock-based Compensation	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION The Company has two share based compensation plans as described below. Total compensation cost that has been charged against income for those plans was $923 , $616 and $251 for 2018 , 2017 and 2016 , respectively. The excess income tax benefit was $88 , $184 and $478 for 2018 , 2017 and 2016 , respectively. Stock Option Plan In 2006, the Board of Directors and shareholders of the Bank approved the Commerce Union Bank Stock Option Plan (the “Plan”). The Plan provides for the granting of stock options, and authorizes the issuance of common stock upon the exercise of such options, for up to 625,000 shares of common stock to employees and organizers of the Company. As part of reorganization, all Commerce Union Bank options were replaced with Commerce Union Bancshares, Inc. options with no change in terms. On March 10, 2015, the shareholders of the Company approved the Commerce Union Bancshares, Inc. Amended and Restated Stock Option Plan that permits the grant of awards of up to 1,250,000 shares of the Company common stock in the form of stock options. As part of the merger with Reliant Bank, all outstanding stock options of Reliant Bank were converted to stock options of Commerce Union Bancshares, Inc. under this plan. Under the Stock Option Plan, stock option awards may be granted in the form of incentive stock options or non-statutory stock options, and are generally exercisable for up to ten years following the date such option awards are granted. Exercise prices of incentive stock options must be equal to or greater than the fair market value of the common stock on the grant date. A summary of the activity in the stock option plan for the periods ended December 31, 2018 , 2017 and 2016 , is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at January 1, 2016 708,921 $ 10.73 Granted 41,500 15.57 Exercised (476,889 ) 10.03 Forfeited or expired (31,991 ) 10.61 Outstanding at December 31, 2016 241,541 12.96 5.41 years $ 2,065 Exercisable at December 31, 2016 144,941 12.11 3.25 years 1,363 Vested and anticipated vesting shares as of December 31, 2016 238,643 12.89 5.41 years 2,003 Granted 15,500 23.55 Exercised (72,080 ) 11.42 Forfeited or expired (14,200 ) 14.06 Outstanding at December 31, 2017 170,761 14.48 5.73 years 1,905 Exercisable at December 31, 2017 95,861 13.00 3.75 years 1,212 Vested and anticipated vesting shares as of December 31, 2017 168,514 14.45 5.73 years 1,848 Granted 25,500 28.00 9.58 years Exercised (30,001 ) 13.27 3.63 years Forfeited or expired (7,000 ) 18.20 8.40 years Outstanding at December 31, 2018 159,260 16.72 6.04 years 1,146 Exercisable at December 31, 2018 88,060 13.45 4.32 years 847 Vested and anticipated vesting shares as of December 31, 2018 157,124 $ 16.67 6.01 years $ 1,002 NOTE 14 - STOCK-BASED COMPENSATION (CONTINUED) A summary of changes in the Company's non-vested options for the years ended December 31, 2018 , 2017 and 2016 are as follows: Shares Weighted Average Grant-Date Fair Value Non-vested options at January 1, 2016 84,160 $ 2.90 Granted 41,500 3.89 Vested (24,260 ) 2.76 Forfeited (4,800 ) 2.92 Non-vested options at December 31, 2016 96,600 3.36 Granted 15,500 6.66 Vested (23,000 ) 6.95 Forfeited (14,200 ) 3.18 Non-vested options at December 31, 2017 74,900 4.14 Granted 25,500 7.10 Vested (22,200 ) 6.69 Forfeited (7,000 ) 4.77 Non-vested options at December 31, 2018 71,200 $ 5.28 Information related to the stock option plan during each year follows and assumes a 3% forfeiture rate: 2018 2017 2016 Intrinsic value of options exercised $ 344 $ 827 $ 2,272 Cash received from option exercises 398 823 4,772 Tax benefit realized from option exercises 88 184 478 Weighted average fair value of options granted 7.10 6.66 3.89 As of December 31, 2018 , there was $310 of total unrecognized compensation cost related to nonvested stock options granted under the Plan. The cost is expected to be recognized over a weighted-average period of 2.37 years. The fair value of options granted during 2018 and 2017 was determined using the following assumptions as of the grant date, resulting in an estimated fair value per option of $6.89 and $6.46 , respectively. 2018 2017 2016 Risk-free interest rate 2.95% 2.30% — 2.45% 1.33% — 2.45% Expected term (in years) 6.5 years 6.5 years 6.5 — 10 years Expected stock price volatility 23.50% 24% — 29.90% 21% — 24.00% Dividend yield 1.14% 0.98% — 1.02% 1.02% — 1.57% NOTE 14 - STOCK-BASED COMPENSATION (CONTINUED) Equity Incentive Plan On June 18, 2015, the shareholders of Commerce Union approved the Commerce Union Bancshares, Inc. 2015 Equity Incentive Plan, which provides for the issuance of up to 900,000 shares of common stock in the form of stock options, restricted stock grants or grants for performance-based compensation. The following table shows the activity related to non-vested restricted stock for the periods ended December 2018 , 2017 and 2016 : Shares Weighted Average Grant-Date Non-vested shares at January 1, 2016 30,500 $ 13.65 Granted 23,800 15.24 Vested (3,835 ) 14.54 Forfeited (2,000 ) 13.65 Non-vested shares at December 31, 2016 48,465 14.36 Granted 50,050 23.65 Vested (13,016 ) 14.21 Forfeited (3,000 ) 14.18 Non-vested shares at December 31, 2017 82,499 20.03 Granted 51,710 27.55 Vested (21,999 ) 15.95 Forfeited (1,550 ) 25.17 Non-vested shares at December 31, 2018 110,660 $ 24.28 The shares issued had a average market value of $25.14 per share in 2018 , $23.65 per share in 2017 and $15.24 in 2016 . The shares vest over periods ranging from one to three years . As of December 31, 2018 , there was $1,704 of unrecognized compensation cost related to non-vested restricted share awards. The cost is expected to be charged over a weighted-average period of 1.6 years . In 2018 , 2017 and 2016 , the fair value of share awards vested totaled $439 , $368 and $60 .

Capital

Capital	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
CAPITAL	CAPITAL The Company and the Bank are subject to regulatory capital requirements administered by the federal and state banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can initiate regulatory action. Management believes that as of December 31, 2018 and 2017 the Company and the Bank met all capital adequacy requirements to which they are subject. Prompt corrective action regulations provide five classifications: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. If adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. At December 31, 2018 and 2017 , the most recent regulatory notifications categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the category. Actual and required capital amounts and ratios are presented below as of December 31, 2018 and 2017 . Actual Regulatory Capital Minimal Capital Adequacy Minimum Required Capital Including Capital Conservation Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio December 31, 2018 Company Tier I leverage $ 168,876 10.38 % $ 65,077 4.00 % $ 65,077 4.000 % $ 81,347 5.00 % Common equity Tier 1 157,273 11.59 % 61,064 4.50 % 86,507 6.375 % 88,203 6.50 % Tier I risk-based capital 168,876 12.44 % 81,451 6.00 % 106,905 7.875 % 108,602 8.00 % Total risk-based capital 180,193 13.28 % 108,550 8.00 % 133,991 9.875 % 135,688 10.00 % Bank Tier I leverage $ 165,308 10.17 % $ 65,018 4.00 % $ 65,018 4.000 % $ 81,272 5.00 % Common equity Tier 1 165,308 12.19 % 61,024 4.50 % 86,451 6.375 % 88,146 6.50 % Tier I risk-based capital 165,308 12.19 % 81,366 6.00 % 106,792 7.875 % 108,488 8.00 % Total risk-based capital 176,625 13.02 % 108,525 8.00 % 133,961 9.875 % 135,657 10.00 % December 31, 2017 Company Tier I leverage $ 126,234 11.89 % $ 42,467 4.00 % $ 42,467 4.000 % $ 53,084 5.00 % Common equity Tier 1 126,234 13.90 % 40,867 4.50 % 52,219 5.750 % 59,030 6.50 % Tier I risk-based capital 126,234 13.90 % 54,489 6.00 % 65,841 7.250 % 72,653 8.00 % Total risk-based capital 135,965 14.97 % 72,660 8.00 % 84,013 9.250 % 90,825 10.00 % Bank Tier I leverage $ 123,862 11.68 % $ 42,418 4.00 % $ 42,418 4.000 % $ 53,023 5.00 % Common equity Tier 1 123,862 13.67 % 40,774 4.50 % 52,100 5.750 % 58,896 6.50 % Tier I risk-based capital 123,862 13.67 % 54,365 6.00 % 65,691 7.250 % 72,487 8.00 % Total risk-based capital 133,593 14.74 % 72,506 8.00 % 83,835 9.250 % 90,633 10.00 % NOTE 15 - CAPITAL (CONTINUED) In July 2013, the Bank’s regulators adopted revised regulatory capital requirements known as “Basel III”, which became effective January 1, 2015. Required capital ratios applicable to the Bank under these guidelines are presented in the preceding table. The new requirements also establish a "capital conservation buffer" of 2.5% that will be phased in over four years. If capital levels fall below the minimum requirement plus the capital conservation buffer, the Bank will be subject to restrictions related dividend payments, share repurchases, and certain employee bonuses. On December 4, 2018, the Company authorized a stock repurchase plan pursuant to which the Company may purchase up to $12 million of shares of the Company’s outstanding common stock, par value $1.00 per share. Stock repurchases under the plan will be made from time to time in the open market or privately negotiated transactions, or otherwise, at the discretion of management of the Company and in accordance with applicable legal requirements. The timing and amount of share repurchases under the plan will depend on a number of factors, including the Company’s stock price performance, ongoing capital planning considerations, general market conditions, and applicable legal requirements. The Company currently anticipates the stock repurchase plan will remain in effect through December 31, 2019, unless the entire authorized amount of shares is sooner repurchased. The stock repurchase plan does not obligate the Company to repurchase any dollar amount or number of shares, and the plan may be extended, modified, amended, suspended, or discontinued at any time.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES The Company has federal funds lines at other financial institutions with availability totaling $78,200 at December 31, 2018 , and 2017 . At December 31, 2018 and 2017 , the Company did no t have outstanding balances for these federal funds lines. The Company also has an unsecured line of credit at CDC Deposits Network with availability of $20,000 . The Company did no t have a balance outstanding related to this line at December 31, 2018 . The Company had a balance outstanding under this line at December 31, 2017 of $2,000 .The Company also may access borrowings utilizing the Federal Reserve bank discount window of $11,166 and $12,900 at December 31, 2018 and 2017 , respectively. There were no funds advanced from the discount window at December 31, 2018 or 2017 . At December 31, 2018 and 2017 , the Company has $310,454 and $208,829 in standby letters of credit with the Federal Home Loan Bank pledged to secure municipal deposits. At December 31, 2018 , the Company has employment agreements with certain executive officers. Upon the occurrence of an “Event of Termination” as defined by the agreements, the Company has an obligation to pay each of the executive officers as defined in the agreements.

Leases

Leases	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
LEASES	LEASES A summary of the Company’s leased facilities (other than month-to-month agreements) follows: Base Lease Renewal Escalation Property Description (In Tennesee unless noted) Expiration Date Terms Clause 1736 Carothers Parkway, Brentwood February 28, 2025 15 years 3% annually 6005 Nolensville Road, Nashville September 30, 2018 — 3% annually 5109 Peter Taylor Park Drive, Brentwood July 31, 2016 10 years 3% annually 101 Creekstone Boulevard, Franklin March 31, 2020 10 years 2% annually 105 Continental Place, Brentwood December 31, 2020 — 3% annually 633 Chestnut St., Chattanooga October 31, 2028 10 years 2% annually 6100 Tower Circle, Franklin December 31, 2027 — 2.5% annually 1835 E. Northfield Blvd. Murfreesboro September 30, 2027 5 years 3% annually 1412 Trotwood Ave., Columbia December 31, 2021 — None 4108 Hillsboro Pike, Nashville October 31, 2021 — 10% after 5th year of initial term and 12% thereafter for renewals The Company has classified all leases as operating lease agreements for office space, copiers, and an automobile. Future minimum rental payments required under the terms of the non-cancellable leases are as follows: Year Ending December 31, 2019 $ 2,216 2020 2,254 2021 1,943 2022 1,649 2023 1,685 Thereafter 4,650 Total $ 14,397 Total rent expense under the leases amounted to $2,536 , $2,055 and $1,954 , respectively, during the years ended December 31, 2018 , 2017 and 2016 .

Financial Instruments with Off-

Financial Instruments with Off-Balance-Sheet Risk	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK	FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK Some financial instruments, such as loan commitments, credit lines, letters of credit, and overdraft protection lines, are issued to meet customer financing needs. These are agreements to provide credit or to support the credit of others, as long as conditions established in the contract are met, and usually have expiration dates. Commitments may expire without being used. Off-balance-sheet risk of credit loss exists up to the face amount of these instruments, although material losses are not anticipated. The same credit policies are used to make such commitments as are used for loans, including obtaining collateral at exercise of the commitment. The contractual amounts of financial instruments with off-balance-sheet risk at December 31, 2018 and 2017 were as follows: 2018 2017 Unused lines of credit Fixed $ 44,053 $ 49,637 Variable 209,898 135,951 Standby letters of credit 16,544 13,176 Total $ 270,496 $ 198,764

Derivatives

Derivatives	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES	DERIVATIVES The Company utilizes interest rate swap agreements as part of its asset liability management strategy to help manage its interest rate risk position. The notional amount of the interest rate swaps does not represent amounts exchanged by the parties. The amount exchanged is determined by reference to the notional amount and other terms of the individual interest rate swap agreements. Interest Rate Swaps Designated as Cash Flow Hedges Interest rate swaps with notional amounts totaling $60,000 as of December 31, 2018, were designated as cash flow hedges of certain Federal Home Loan Bank borrowings and subordinated debentures which are fully effective. As such, no amount of ineffectiveness has been included in net income. Therefore, the aggregate fair value of the swaps is recorded in other assets (liabilities) with changes in fair value recorded in other comprehensive income (loss). The amount included in accumulated other comprehensive income (loss) would be reclassified to current earnings should the hedges no longer be considered effective. The Company expects the hedges to remain fully effective during the remaining terms of the swap agreements. NOTE 19 - DERIVATIVES (CONTINUED) Interest Rate Swaps Designated as Cash Flow Hedges, (Continued) Summary information related to the interest rate swaps designated as cash flow hedges for the year ended December 31, 2018 is as follows: Notional amounts $ 60,000 Weighted average pay rates 3.338 % Weighted average receive rates 2.856 % Weighted average maturity 4.47 years Unrealized losses $ 1,153 Cash Flow Hedges The following table presents the net gains (losses) recorded in accumulated other comprehensive income and the Consolidated Statements of Operations relating to the cash flow derivative instruments for the years ended: Amount of Gain (Loss) Recognized in OCI Amount of Gain (Loss) Reclassified from OCI to Interest Income Amount of Gain (Loss) Recognized in Other Non-Interest Income (Ineffective Portion) December 31, 2016 Interest rate contracts $ — $ — $ — December 31, 2017 Interest rate contracts — — — December 31, 2018 Interest rate contracts $ (1,153 ) $ — $ — The following table reflects the cash flow hedges included in the Consolidated Balance Sheets as of December 31, 2018 and 2017: 2018 2017 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Total included in other assets $ — $ — $ — $ — Included in other liabilities: Interest rate swaps related to subordinate debentures $ 10,000 $ 174 $ — $ — Interest rate swaps related to Federal Home Loan Bank borrowings 50,000 979 — — Total included in other liabilities $ 60,000 $ 1,153 $ — $ — NOTE 19 - DERIVATIVES (CONTINUED) Fair Value Hedges The following table reflects the fair value hedges included in the Consolidated Statements of Operations as of December 31: Interest rate contracts Location 2018 2017 2016 Change in fair value on interest rate swaps hedging investments Interest income $ 462 $ 47 $ 422 The following table reflects the fair value hedges included in the Consolidated Balance Sheets as of December 31: 2018 2017 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Interest rate swaps related to investments $ 16,902 $ 467 $ 9,882 $ 155 Total included in other assets $ 16,902 $ 467 $ 9,882 $ 155 Included in other liabilities: Interest rate swaps related to investments $ 4,203 $ 30 $ 11,623 $ 180 Total included in other liabilities $ 4,203 $ 30 $ 11,623 $ 180

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE The following is a summary of the components comprising basic and diluted earnings per common share of stock (EPS) for the years ended December 31,: Year Ended 2018 2017 2016 Basic EPS Computation Net income attributable to common shareholders $ 14,085 $ 7,246 $ 8,936 Weighted average common shares outstanding 11,389,122 8,151,492 7,586,993 Basic earnings per common share $ 1.24 $ 0.89 $ 1.18 Diluted EPS Computation Net income attributable to common shareholders $ 14,085 $ 7,246 $ 8,936 Weighted average common shares outstanding 11,389,122 8,151,492 7,586,993 Dilutive effect of stock options and restricted shares 79,667 87,809 104,500 Adjusted weighted average common shares outstanding 11,468,789 8,239,301 7,691,493 Diluted earnings per common share $ 1.23 $ 0.88 $ 1.16 Stock options for common stock and restricted shares totaling 62,910 , 10,500 and 2,500 were not considered in computing diluted earnings per common share for 2018, 2017 and 2016, respectively, because they were antidilutive.

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
SEGMENT REPORTING	SEGMENT REPORTING The Company has two reportable business segments: retail banking and residential mortgage banking. Segment information is derived from the internal reporting system utilized by management. Revenues and expenses for segments reflect those, which can be specifically identified and have been assigned based on internally developed allocation methods. Financial results have been presented, to the extent practicable, as if each segment operated on a stand-alone basis. Retail Banking provides deposit and lending services to consumer and business customers within our primary geographic markets. Our customers are serviced through branch locations, ATMs, online banking, and mobile banking. Residential Mortgage Banking originates traditional first lien residential mortgage loans and first lien home equity lines of credit throughout the United States. The traditional first lien residential mortgage loans are typically underwritten to government agency standards and sold to third party secondary market mortgage investors. The home equity lines of credit are typically underwritten to participating banks or other investor group standards. NOTE 21 - SEGMENT REPORTING (CONTINUED) The following tables present summarized results of operations for the Company’s business segments: Year Ended December 31, 2018 Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 53,008 $ 821 $ — $ 53,829 Provision for loan losses 1,035 — — 1,035 Noninterest income 5,232 4,595 (181 ) 9,646 Noninterest expense 41,512 9,049 — 50,561 Income tax expense (benefit) 1,608 (236 ) — 1,372 Net income (loss) 14,085 (3,397 ) (181 ) 10,507 Noncontrolling interest in net loss of subsidiary — 3,397 181 3,578 Net income attributable to common shareholders $ 14,085 $ — $ — $ 14,085 Year Ended December 31, 2017 Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 33,761 $ 726 $ — $ 34,487 Provision for loan losses 1,316 — — 1,316 Noninterest income 2,333 3,805 (128 ) 6,010 Noninterest expense 25,524 5,552 — 31,076 Income tax expense (benefit) 2,008 (66 ) — 1,942 Net income 7,246 (955 ) (128 ) 6,163 Noncontrolling interest in net income of subsidiary — 955 128 1,083 Net income attributable to common shareholders $ 7,246 $ — $ — $ 7,246 Year Ended December 31, 2016 Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 32,035 $ 617 $ — $ 32,652 Provision for loan losses 968 — — 968 Noninterest income 2,481 6,319 — 8,800 Noninterest expense 22,327 8,047 — 30,374 Income tax expense (benefit) 2,285 (72 ) — 2,213 Net income 8,936 (1,039 ) — 7,897 Noncontrolling interest in net income of subsidiary — 1,039 — 1,039 Net income attributable to common shareholders $ 8,936 $ — $ — $ 8,936

Business Combination

Business Combination	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
BUSINESS COMBINATION	BUSINESS COMBINATION On January 1, 2018, pursuant to the Agreement and Plan of Merger, dated August 22, 2017, by and among Reliant Bancorp, Inc., Community First Inc., Pioneer Merger Sub, Inc., and Community First Bank & Trust, Community First, Inc. merged with and into the Reliant Bancorp, Inc. Immediately following the merger, Community First Bank & Trust merged with and into Reliant Bank, with Reliant Bank surviving. Pioneer Merger Sub, Inc. was formed to effect the merger and no longer exists. Pursuant to the merger agreement, each outstanding share of Community First, Inc. common stock (except for excluded shares and dissenting shares) was converted into and cancelled in exchange for the right to receive 0.481 shares of Reliant Bancorp, Inc. common stock, together with cash in lieu of any fractional shares. This business combination results in expanded and more diversified market area for the Company. The following table details the financial impact of the merger, including the calculation of the purchase price, the allocation of the purchase price to the fair values of net assets assumed and goodwill recognized: Calculation of Purchase Price Shares of Community First, Inc. common stock outstanding as of December 31, 2017 5,025,884 Exchange ratio for Reliant Bancorp, Inc. common stock 0.481 Share conversion 2,417,450 Reliant Bancorp, Inc. common stock shares issued 2,416,444 Reliant Bancorp, Inc. share price at December 29, 2017 $ 25.64 Value of Reliant Bancorp, Inc. common stock shares issued $ 61,958 Value of fractional shares $ 25 Estimated fair value of Community First, Inc. $ 61,983 NOTE 22 - BUSINESS COMBINATION (CONTINUED) Allocation of Purchase Price Total consideration above $ 61,983 Fair value of assets acquired and liabilities assumed Cash and cash equivalents (33,128 ) Time deposits in other financial institutions (23,309 ) Investment securities available for sale (69,078 ) Loans, net of unearned income (313,040 ) Mortgage loans held for sale, net (910 ) Accrued interest receivable (1,165 ) Premises and equipment (9,585 ) Restricted equity securities (1,726 ) Cash surrender value of life insurance contracts (10,664 ) Other real estate owned (1,650 ) Deferred tax asset, net (4,885 ) Core deposit intangible (7,888 ) Other assets (1,795 ) Deposits—noninterest-bearing 80,395 Deposits—interest-bearing 352,100 Other borrowings 11,522 Payables and other liabilities 5,061 Net liabilities assumed (net assets acquired) (29,745 ) Goodwill $ 32,238 During 2018 , as part of the system integration of Community First, Inc., the Company determined minor adjustments were appropriate to reduce other assets by $93 and increase payables and other liabilities by $85 effective as of the acquisition date. Pro forma data for the years ended December 31, 2017 and 2016 , in the table below presents information as if the merger occurred at the beginning of each year. 2017 2016 Net interest income $ 51,031 $ 48,724 Net income attributable to common shareholders $ 6,387 $ 17,660 Earnings per share - basic $ 0.60 $ 1.84 Earnings per share - diluted $ 0.60 $ 1.82 Supplemental pro forma earnings in the table above includes, net of tax, $564 in pro forma adjustments for both years ended December 31, 2018 and 2017 . Supplemental pro forma earnings in the above table for the year ended December 31, 2017 includes $5,478 of nonrecurring costs with a related tax benefit of $536 from prior historical results. Supplemental pro forma earnings in the above table for the year ended December 31, 2016 includes $4,168 of nonrecurring income from prior historical results.

Quarterly Financial Results (Un

Quarterly Financial Results (Unaudited)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
QUARTERLY FINANCIAL RESULTS (UNAUDITED)	QUARTERLY FINANCIAL RESULTS (UNAUDITED) The following is a summary of consolidated quarterly financial results for the year ended December 31, 2018 : First Second Third Fourth Interest income $ 16,362 $ 16,830 $ 17,570 $ 18,463 Net interest income 13,382 13,404 13,466 13,577 Consolidated net income 3,277 1,202 3,240 2,788 Noncontrolling interest in net loss of subsidiary 464 937 842 1,335 Net income attributable to common shareholders 3,741 2,139 4,082 4,123 Basic earnings per share $ 0.33 $ 0.19 $ 0.36 $ 0.36 Diluted earnings per share $ 0.33 $ 0.19 $ 0.36 $ 0.36 The following is a summary of consolidated quarterly financial results for the year ended December 31, 2017 : First Second Third Fourth Interest income $ 8,973 $ 9,704 $ 10,627 $ 10,854 Net interest income 7,971 8,503 9,096 8,917 Consolidated net income 1,559 1,794 1,840 970 Noncontrolling interest in net loss of subsidiary 499 393 6 185 Net income attributable to common shareholders 2,058 2,187 1,846 1,155 Basic earnings per share $ 0.27 $ 0.28 $ 0.23 $ 0.13 Diluted earnings per share $ 0.26 $ 0.28 $ 0.22 $ 0.13 The following is a summary of consolidated quarterly financial results for the year ended December 31, 2016 : First Second Third Fourth Interest income $ 8,914 $ 9,497 $ 8,656 $ 8,948 Net interest income 8,082 8,692 7,835 8,043 Consolidated net income 2,558 2,137 1,763 1,439 Noncontrolling interest in net (income) loss of subsidiary (321 ) 223 605 532 Net income attributable to common shareholders 2,237 2,360 2,368 1,971 Basic earnings per share $ 0.30 $ 0.31 $ 0.31 $ 0.26 Diluted earnings per share $ 0.30 $ 0.31 $ 0.30 $ 0.25

Mortgage Operations

Mortgage Operations	12 Months Ended
	Dec. 31, 2018
Noncontrolling Interest [Abstract]
MORTGAGE OPERATIONS	MORTGAGE OPERATIONS During 2011, the Company and VHC Fund 1, LLC organized Reliant Mortgage Ventures, LLC (the “Venture”) for the purpose of improving the Company’s mortgage operations. The Company holds 51% of the governance rights of the Venture (and therefore consolidates the results of its operations) and 30% of the Venture’s financial rights to net profits. VHC Fund 1, LLC holds 49% of the governance rights of the Venture and 70% of the related financial rights. VHC Fund 1, LLC is controlled by an immediate family member of a member of the Company’s board of directors. Under the related operating agreement, the non-controlling member receives 70% of the profits of the Venture, and the Company receives 30% of the profits once the non-controlling member recovers its cumulative losses. The non-controlling member is responsible for 100% of the mortgage venture’s operational and credit losses. The income and loss is included in the consolidated results of operations. The portion of the income and loss attributable to the non-controlling member ( 100% for 2018 , 2017 and 2016 ) are included in non-controlling interest in net loss of subsidiary on the accompanying consolidated statements of operations. At December 31, 2018 and 2017 , the Venture had a payable balance to the Company of $1,484 and $342 , respectively. Direct costs incurred by the Company attributable to the mortgage operations are allocated to the Venture as well as rent, personnel and core processing. As of December 31, 2018 , the cumulative losses to date of the Venture totaled $8,058 . The Venture will have to generate net income of this amount before the Company will participate in future earnings.

Parent Company Condensed Financ

Parent Company Condensed Financial Information	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
PARENT COMPANY CONDENSED FINANCIAL INFORMATION	PARENT COMPANY CONDENSED FINANCIAL INFORMATION The following tables present parent company condensed financial statements for Reliant Bancorp, Inc.: CONDENSED BALANCE SHEET DECEMBER 31, 2018 2017 ASSETS Cash and cash equivalents $ 1,985 $ 1,709 Investment in subsidiaries 225,446 137,765 Other assets 3,447 1,841 Total assets $ 230,878 $ 141,315 LIABILITIES AND SHAREHOLDERS' EQUITY Dividend payable $ 1,036 $ 542 Accrued expenses and other liabilities 406 636 Subordinate debentures 21,022 — Shareholders' equity 208,414 140,137 Total liabilities and shareholders' equity $ 230,878 $ 141,315 NOTE 25 - PARENT COMPANY CONDENSED FINANCIAL INFORMATION (CONTINUED) The following tables present parent company condensed financial statements for Reliant Bancorp, Inc.: CONDENSED STATEMENT OF INCOME YEARS ENDED DECEMBER 31, 2018 2017 2016 Dividends from subsidiaries $ 7,521 $ 2,141 $ 3,161 Interest expense 1,277 — — Other expense 4,775 2,920 1,326 Income before income tax and undistributed income from subsidiaries 1,469 (779 ) 1,835 Income tax expense (benefit) (1,537 ) (922 ) (508 ) Equity in undistributed income from subsidiaries 11,079 7,103 6,593 Net income attributable to common shareholders $ 14,085 $ 7,246 $ 8,936 CONDENSED STATEMENT OF CASH FLOWS YEARS ENDED DECEMBER 31, 2018 2017 2016 Cash flows from operating activities Net income attributable to common shareholders $ 14,085 $ 7,246 $ 8,936 Reclassification of federal income tax rate change — (245 ) — Adjustments: Equity in undistributed income from subsidiaries (11,079 ) (7,103 ) (6,593 ) Accretion related to subordinated debentures 969 — — Change in other assets (1,333 ) 790 (219 ) Change in other liabilities (230 ) 595 (582 ) Net cash from operating activities 2,412 1,283 1,542 Cash flows from investing activities Investment in subsidiary — (21,195 ) (4,772 ) Net cash used in investing activities — (21,195 ) (4,772 ) Cash flows from financing activities Dividends paid (3,451 ) (3,193 ) (1,489 ) Redemption of common stock (6 ) — — Proceeds from equity issuances, net 1,321 24,648 4,772 Net cash from (used in) financing activities (2,136 ) 21,455 3,283 Net change in cash and cash equivalents 276 1,543 53 Beginning cash and cash equivalents 1,709 166 113 Ending cash and cash equivalents $ 1,985 $ 1,709 $ 166

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2018
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENT RMV entered into a lease agreement for a facility located in Arkansas subsequent to December 31, 2018. This represents a new market location for the Company, with terms of the two year lease being $6 each month.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Nature of Operations Reliant Bancorp, Inc. began organizational activities in 2005. The Company provides financial services through its offices in Williamson, Robertson, Davidson, Sumner, Rutherford, Maury, Hickman and Hamilton Counties in Tennessee. Its primary deposit products are checking, savings, and term certificate accounts, and its primary lending products are commercial and residential construction loans, commercial loans, installment loans and lines secured by home equity. Substantially all loans are secured by specific items of collateral including commercial and residential real estate, business assets, and consumer assets. Commercial loans are expected to be repaid from cash flow from operations of businesses. On January 1, 2018, Community First, Inc. a community banking organization headquartered in Columbia, Tennessee was merged with and into the Company. See Note 22.
Basis of Presentation	Basis of Presentation The accounting and reporting policies of Reliant Bancorp, Inc. conform to accounting principles generally accepted in the United States of America and to general practices within the banking industry. The following is a brief summary of the significant policies. The consolidated financial statements as of and for the periods presented include the accounts of Reliant Bancorp Inc., Reliant Bank, Community First TRUPS Holding Company, which is wholly owned by Reliant Bancorp Inc., (“TRUPS”), Reliant Investment Holdings, LLC ("Holdings") which is 100% wholly owned by Reliant Bank, and Reliant Mortgage Ventures, LLC ("RMV"), of which Reliant Bank controls 51% of the governance rights. Reliant Bancorp Inc., Reliant Bank, TRUPS, Holdings and RMV, are collectively referred to herein as the “Company”. As described in the notes to our annual consolidated financial statements, all significant intercompany balances and transactions have been eliminated in consolidation. The accounting and reporting policies of the Company conform to accounting principles generally accepted in the United States of America ("U.S. GAAP") and to general practices in the banking industry.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions based on available information. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to determination of the allowance for loan losses, the valuation of other real estate, the valuation of debt and equity securities, the valuation of deferred tax assets and fair values of financial instruments.
Concentrations	Concentrations At December 31, 2018 , the Company had significant credit exposures to borrowers in real estate. If this industry experiences another economic slowdown and, as a result, the borrowers in this industry are unable to meet the obligations of their existing loan agreements, earnings could be negatively impacted. The Company is concentrated in the Tennessee regional market and the operating results are impacted by the economic conditions of that area.
Cash and Cash Equivalents	Cash and Cash Equivalents For purposes of reporting cash flows, cash and cash equivalents include cash on hand, deposits with other financial institutions with maturities less than 90 days, and federal funds sold. Generally, federal funds sold are purchased and sold for one-day periods. Net cash flows are reported for customer loan and deposit transactions, federal funds sold, and short-term Federal Home Loan Bank borrowings. The Company maintains deposits in excess of the federal insurance amounts with other financial institutions. Management makes deposits only with financial institutions it considers financially sound. Federal funds sold of $371 and $171 at December 31, 2018 and 2017 , respectively, were invested in one financial institution. Such funds were unsecured and matured the next business day.
Securities	Securities The Company classifies its securities in one of two categories: held to maturity and available for sale. Held to maturity securities are those securities for which the Company has the ability and intent to hold until maturity. Securities are classified as available for sale when they might be sold before maturity. The Company had no held to maturity securities at December 31, 2018 and 2017 , or in the three year period ended December 31, 2018 . Interest income includes purchase premiums and discounts amortized or accreted over the life of the related security as an adjustment to the yield without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Gains and losses on sales are recorded on the trade date and determined using the specific identification method. When the fair value of a debt security has declined below the amortized cost at the measurement date, if an entity intends to sell a security or is more likely than not to sell the security before the recovery of the security’s cost basis, the entity must recognize the other-than-temporary impairment (“OTTI”) in earnings. For a debt security with a fair value below the amortized cost at the measurement date where it is more likely than not that an entity will not sell the security before the recovery of its cost basis, but an entity does not expect to recover the entire cost basis of the security, the security is classified as OTTI. The related OTTI loss on the debt security will be recognized in earnings to the extent of the credit losses, with the remaining impairment loss recognized in accumulated other comprehensive income. In estimating OTTI losses, management considers: the length of time and extent that fair value of the security has been less than the cost of the security, the financial condition and near term prospects of the issuer, cash flow, stress testing analysis on securities, when applicable, and the Company’s ability and intent to hold the security for a period sufficient to allow for any anticipated recovery in fair value.
Loans	Loans Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal balance outstanding, net of unearned interest, deferred loan fees, and an allowance for loan losses. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized in interest income using a straight-line method without anticipating prepayments. This treatment does not materially differ from the level interest yield method. Past due status is determined based on the contractual terms of the note. The accrual of interest is discontinued when a loan becomes 90 days past due according to the contractual terms of the note unless it is well collateralized and in the process of collection, or when management believes, after considering economic and business conditions and collection efforts, that the principal or interest will not be collectible in the normal course of business. When a loan is placed on non-accrual status, previously accrued and uncollected interest is charged against interest income on loans. When full collection of the remaining book balance is uncertain, interest payments received are applied to the principal balance outstanding. In some cases, when the remaining book balance of the loan is deemed fully collectible, payments are treated as interest income on a cash basis. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. The restructuring of a loan is considered a “troubled debt restructuring” if the borrower is experiencing financial difficulties and the Company has granted a concession. Concessions may include interest rate reductions or below market interest rates, principal forgiveness, restructuring amortization schedules and other actions intended to minimize potential losses.
Allowance for Loan Losses	Allowance for Loan Losses The allowance for loan losses is a valuation allowance for probable incurred credit losses. Loan losses are charged against the allowance when management believes the uncollectibility of a loan balance is confirmed. Subsequent recoveries, if any, are credited to the allowance. Management estimates the allowance balance required using historical loan loss experience, the nature and volume of the portfolio, information about specific borrower situations and estimated collateral values, current economic conditions (national and local), and other factors such as changes in interest rates, portfolio concentrations, changes in the experience, ability, and depth of the lending function, levels of and trends in charged-off loans, recoveries, past due loans and volume and severity of classified loans. The allowance consists of specific and general components. The specific component relates to loans that are individually classified as impaired. The general component covers non-impaired loans and is based on historical loss experience adjusted for current factors. The entire allowance is available for any loan that, in management’s judgment, should be charged-off. A loan is impaired when full payment under the loan terms is not expected. All classified loans and loans on non-accrual status are individually evaluated for impairment. Factors considered in determining if a loan is impaired include the borrower’s ability to repay amounts owed, collateral deficiencies, the risk rating of the loan and economic conditions affecting the borrower’s industry, among other things. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported, net, at the present value of estimated future cash flows using the loan’s existing rate or at the fair value (less estimated costs to sell) of collateral if repayment is expected solely from the collateral. Interest payments on impaired loans are typically applied to principal unless the principal amount is deemed fully collectible, in which case interest is recognized on a cash basis. When recognition of interest income on a cash basis is appropriate, the amount of income recognized is limited to what would have been accrued on the remaining principal balance at the contractual rate. Cash payments received over this limit, and not applied to reduce the loans remaining principal balance, are recorded as recoveries of prior charge-offs until these charge-offs have been fully recovered.
Mortgage Loans Held for Sale	Mortgage Loans Held for Sale Mortgage loans originated with the intent to sell to third party investors are classified as held for sale. Such loans are carried at the lower of aggregate cost or market value, as determined by pricing on an individual loan basis. These loans are typically marketed to potential investors prior to closing the loan with the borrower. Net unrealized losses, if any, are recorded through a valuation allowance and charged to operations.
Transfers of Financial Assets	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 maturity.
Premises and Equipment	Premises and Equipment Premises and equipment are stated at cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the related assets or the terms of the related lease for leasehold improvements. The range of estimated useful lives for buildings is 30 to 40 years , for leasehold improvements is 3 to 25 years , which correlates with the applicable lease term, and for furniture, fixtures and equipment is 3 to 7 years . Gain or loss on items retired and otherwise disposed of is credited or charged to operations and the cost and related accumulated depreciation are removed from the asset and accumulated depreciation accounts. Expenditures and improvements of premises and equipment are capitalized and those for maintenance and repairs are charged to earnings as incurred.
Restricted Equity Securities	Restricted Equity Securities Each member of the Federal Reserve is required to subscribe to Federal Reserve Bank (“FRB”) stock. The Bank is a member of the Federal Home Loan Bank (“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. These stocks are carried at cost, classified as restricted equity securities, and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income.
Other Real Estate	Other Real Estate Real estate acquired in the settlement of loans is initially recorded at estimated fair value, less estimated cost to sell, if less than the carrying value of the loan when acquired. Based on periodic evaluations by management, the carrying values are reduced by a direct charge to earnings when they exceed net realizable value. Costs relating to the development and improvement of the property are capitalized up to fair value less cost to sell, while holding costs of the property are charged to expense in the period incurred.
Cash Surrender Value of Life Insurance Policy	Cash Surrender Value of Life Insurance Contracts The Company is the owner and beneficiary of various life insurance policies on certain key employees. These policies are recorded at their cash surrender values.
Impairment of Long-Term Assets	Impairment of Long-Term Assets Premises and equipment and other long-term assets are reviewed for impairment when events indicate their carrying amount may not be recoverable from future undiscounted cash flows. If impaired, the assets are written down to fair value, with a corresponding charge to earnings.
Goodwill	Goodwill Goodwill represents that excess of the purchase price of over the fair value of assets and liabilities acquired in a 2018 business acquisition (see Note 22) , 2015 business acquisition and a 2009 business acquisition. Goodwill is evaluated for impairment at least annually and more frequently if events and circumstances indicate that the asset might be impaired.
Loan Commitments and Related Financial Instruments	Loan Commitments and Related Financial Instruments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded.
Derivatives	Derivatives At the inception of a derivative contract, the Company designates the derivative as one of three types based on the Company's intentions and belief as to the likely effectiveness as a hedge. These three types are (1) a hedge of the fair value of a recognized asset or liability or of an unrecognized firm commitment ("fair value hedge"), (2) a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability ("cash flow hedge"), or (3) an instrument with no hedging designation ("stand-alone derivative"). For a fair value hedge, the gain or loss on the derivative, as well as the offsetting loss or gain on the hedged item, are recognized in current earnings as fair values change. For a cash flow hedge, the gain or loss on the derivative is reported in other comprehensive income and is reclassified into earnings in the same periods during which the hedged transaction affects earnings. For both types of hedges, changes in the fair value of derivatives that are not highly effective in hedging the changes in fair value or expected cash flows of the hedged item are recognized immediately in current earnings. Net cash settlements on derivatives that qualify for hedge accounting are recorded in interest income or interest expense, based on the item being hedged. Net cash settlements on derivatives that do not qualify for hedge accounting are reported in non-interest income. Cash flows on hedges are classified in the cash flow statement the same as the cash flows of the items being hedged. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Derivatives, (Continued) The Company formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions at the inception of the hedging relationship. This documentation includes linking fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge's inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting changes in fair values or cash flows of the hedged items. The Company discontinues hedge accounting when it determines that the derivate is no longer effective in offsetting changes in the fair value or cash flows of the hedged item, the derivative is settled or terminates, a hedged forecasted transaction is no longer probable, a hedged firm commitment is no longer firm, or treatment of the derivative as a hedge is not longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as non-interest income. When a fair value hedge is discontinued, the hedged asset or liability is no longer adjusted for changes in fair value and the existing basis adjustment is amortized or accreted over the remaining life of the asset or liability. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income are amortized into earnings over the same periods which the hedged transactions will affect earnings.
Stock Based Compensation	Stock Based Compensation Compensation cost recognized for stock options and restricted stock awards issued to employees is based on the fair value of these awards at the date of grant. A binomial model is utilized to estimate the fair value of stock options. Compensation cost is recognized over the required service period, generally defined as the vesting period. Additionally, during 2016, the Company elected to adopt the provisions of ASU 2016-09, “Compensation - Stock Compensation (Topic 718 ): Improvements to Employee Share-Based Payment Accounting,” in advance of the required application date of January 1, 2017. Our financial statements for 2016 are presented as if we adopted ASU 2016-09 on January 1, 2016 on a prospective basis and prior periods have not been restated. ASU 2016-09 requires that all income tax effects related to settlements of share-based payment awards be reported in earnings as an increase (or decrease) to income tax expense. Previously, income tax benefits at settlement of an award were reported as an increase (or decrease) to additional paid-in capital to the extent that those benefits were greater than (or less than) the income tax benefits recognized in earnings during the award's vesting period.
Income Taxes	Income Taxes Income tax expense or benefit 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 expected amount most likely 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. Management performs an evaluation of all income tax positions taken or expected to be taken in the course of preparing the Company’s income tax returns to determine whether the income tax positions meet a “more likely than not” standard of being sustained under examination by the applicable taxing authorities. Management has performed its evaluation of all income tax positions taken on all open income tax returns and has determined that there were no positions taken that do not meet the “more likely than not” standard. Penalties and interest relating to income taxes are recognized in income tax expense. The Company files income tax returns in the U.S. federal jurisdiction and various states. The Company’s federal and states income tax returns for years prior to fiscal year 2015 are no longer open to examination. Certain returns from years in which net operating losses have occurred are still open for examination by the tax authorities.
Earnings Per Share	Earnings Per Share Earnings per share is computed by dividing net income attributable to common shareholders by the weighted-average number of common shares outstanding. Diluted earnings per share is computed by dividing net income attributable to common shareholders by the weighted-average number of common shares outstanding plus shares representing the dilutive effect of stock options outstanding.
Retirement Plan	Retirement Plan The Company has a 401(k) retirement plan covering all employees who elect to participate, subject to certain eligibility requirements. The Plan allows employees to defer up to 100% of their salary, subject to regulatory limitations with the Company matching 100% of the first 6% contributed by the employee. The Company recognizes as expense the amount of matching contributions related to the 401(k) plan. Vesting within the plan is immediate for 100% of deferral and employer contributions.
Comprehensive Income	Comprehensive Income Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes unrealized gains and losses on securities available for sale and derivatives. These gains and losses are recognized as a separate component of stockholders’ equity.
Loss Contingencies	Loss Contingencies Loss contingencies, including claims and legal actions arising in the ordinary course of business, are recorded as liabilities when the likelihood of loss is probable and an amount or range of loss can be reasonably estimated. Management does not believe there are such matters that will have a material effect on the consolidated financial statements.
Restrictions on Cash	Restrictions on Cash Cash on hand or on deposit with the Federal Reserve Bank was required to meet regulatory reserve and clearing requirements.
Preferred Shares	Preferred Shares Preferred shares have rights that can be set when issued as determined by the Board of Directors.
Dividend Restriction	Dividend Restriction Banking regulations require maintaining certain capital levels and may limit the dividends paid by the Company to shareholders.
Advertising Costs	Advertising Costs Advertising costs are expensed as incurred
Fair Value Measurements	Fair Value Measurements Financial accounting standards relating to fair value measurements establish a framework for measuring fair value. That framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below: Level 1 Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that the Company has the ability to access. Level 2 Inputs to the valuation methodology include: • Quoted prices for similar assets or liabilities in active markets; • Quoted prices for identical or similar assets or liabilities in inactive markets; • Inputs other than quoted prices that are observable for the asset or liability; • Inputs that are derived principally from or corroborated by the observable market data by correlation or other means. If the asset or liability has a specified (contractual) term, the Level 2 input must be observable for substantially the full term of the asset or liability. Level 3 Inputs to the valuation methodology are unobservable and reflect an entity’s own assumptions about the assumptions that market participants would use in pricing the assets or liabilities. An asset’s or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques should maximize the use of observable inputs and minimize the use of unobservable inputs. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Fair Value Measurements (Continued) Following is a description of the valuation methodologies used for assets and liabilities measured at fair value on a recurring basis: Securities available for sale: The fair values of securities available for sale are determined by obtaining quoted prices on nationally recognized securities exchanges (Level 1 inputs) or matrix pricing, which is a mathematical technique widely used in the industry to value debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities (Level 2 inputs). The Company obtains fair value measurements for securities available for sale from an independent pricing service. The fair value measurements consider observable data that may include benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, cash flows and reference data, including market research publications, among other things. Interest rate swaps: The fair values of interest rate swaps are determined based on discounted future cash flows. Certain assets and liabilities are measured at fair value on a nonrecurring basis; that is, the instruments are not measured at fair value on an ongoing basis, but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). Assets and liabilities measured at fair value on a nonrecurring basis include the following: Impaired loans : The fair value of impaired loans with specific allocations of the allowance for loan losses is generally based on the present value of expected payments using the loan’s effective rate as the discount rate or recent real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available. Such adjustments are typically significant and result in a Level 3 classification of the inputs for determining fair value. Mortgage loans held for sale: Bid quotes are presently used for the fair value estimate of mortgage loans held for sale, while previously the Company used a model as developed and performed by an independent entity to value such loans. Other real estate owned: The fair value of other real estate owned is generally based on recent real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available. Such adjustments are typically significant and result in a Level 3 classification of the inputs for determining fair value. The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Company’s valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.
Fair Value of Financial Instruments	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 5. 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.
Reclassifications	Reclassifications Certain reclassifications have been made in the 2017 and 2016 consolidated financial statements to conform to the 2018 presentation. These reclassifications had no effect on total assets, total liabilities or the results of operations previously reported.
Recent Authoritative Accounting Guidance	Recent Authoritative Accounting Guidance The following discusses new authoritative accounting guidance and the related impact on the Company. ASU 2014-09, “ Revenue from Contracts with Customers (Topic 606 )” implements a common revenue standard that clarifies the principles for recognizing revenue. The principle element of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve this principle, an entity should apply the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. ASU 2014-09 was originally going to be effective for the Company on January 1, 2018; however, the FASB recently issued ASU 2015-14, “Revenue from Contracts with Customers (Topic 606 ) – Deferral of the Effective Date" which deferred the effective date of ASU 2014-09 by one year to January 1, 2019. Revenue is comprised of net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU 2014-09, and non-interest income. The Company does not expect these changes to have a significant impact on the consolidated financial statements. The Company continues to evaluate the impact of ASU 2014-09 on other components of non-interest income. ASU 2016-01, “ Financial Instruments – Overall (Subtopic 825-10 ): Recognition and Measurement of Financial Assets and Financial Liabilities ." ASU 2016-01, among other things, (i) requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income, (ii) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment, (iii) eliminates the requirement for public business entities to disclose the methods 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, (iv) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, (v) requires 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, (vi) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and (viii) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities. ASU 2016-01 will be effective for us on January 1, 2019 and will not have a significant impact on our financial statements. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Recent Authoritative Accounting Guidance, (Continued) ASU 2016-02, “ Leases (Topic 842 ) .” ASU 2016-02 will require lessees to recognize a lease liability, which is a lessee's obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. ASU 2016-02 will be effective for us on January 1, 2020 and will require transition using a modified retrospective approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the consolidated financial statements. We estimate that the effect of implementing this pronouncement will result in right to use assets of $13,583 and a corresponding liability, using the remaining contractual lease periods. We also estimate the impact on regulatory capital to be a reduction of eight basis points. Management is presently evaluating the planned renewals of existing leases. If management determines to utilize the renewals of leases then the right to use assets and corresponding liability will increase. ASU 2016-05, “ Derivatives and Hedging (Topic 815 ) Effect of Derivative Contract Novations on Existing Hedge Accounting Relationships. ” ASU 2016-05 clarifies that a change in the counterparty to a derivative instrument that has been designated as the hedging instrument under ASC Topic 815 does not, in and of itself, require dedesignation of that hedging relationship provided that all other hedge accounting criteria continue to be met. ASU 2016-05 became effective for the Company on January 1, 2018 and did not have a significant impact on the consolidated financial statements. ASU 2016-09, “Compensation - Stock Compensation (Topic 718 ): Improvements to Employee Share-Based Payment Accounting.” Under ASU 2016-09, all excess tax benefits and tax deficiencies related to share-based payment awards should be recognized as income tax expense or benefit in the income statement during the period in which they occur. Previously, such amounts were recorded in the pool of excess tax benefits included in additional paid-in capital, if such pool was available. Because excess tax benefits are no longer recognized in additional paid-in capital, the assumed proceeds from applying the treasury stock method when computing earnings per share excludes the amount of excess tax benefits that would have previously been recognized in additional paid-in capital. Additionally, excess tax benefits should be classified along with other income tax cash flows as an operating activity rather than a financing activity, as was previously the case. ASU 2016-09 also provides that an entity can make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest (current GAAP) or account for forfeitures when they occur. ASU 2016-9 changes the threshold to qualify for equity classification (rather than as a liability) to permit withholding up to the maximum statutory tax rates (rather than the minimum as was previously the case) in the applicable jurisdictions. The Company elected to adopt the provisions of ASU 2016-09 in 2016 in advance of the required application date of January 1, 2017. The adoption of this standard reduced reported income tax expense by $478 , or approximately $0.06 per diluted common share, for 2016. The Company did not apply the provisions of this pronouncement retrospectively. ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” ASU 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts and requires enhanced disclosures related to the significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, ASU 2016-13 amends the accounting for credit losses on available for sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 will be effective on January 1, 2021. We are currently evaluating the potential impact of ASU 2016-13 on our financial statements. We are currently developing an implementation plan to include assessment of processes, portfolio segmentation, model development, system requirements and the identification of data and resource needs, among other things. We are also in the process of implementing a third-party vendor solution to assist us in the application of the ASU 2016-13. The adoption of the ASU 2016-13 could result in an increase in the allowance for loan losses as a result of changing from an “incurred loss” model, which encompasses allowances for current known and inherent losses within the portfolio, to an “expected loss” model, which encompasses allowances for losses expected to be incurred over the life of the portfolio. Furthermore, ASU 2016-13 will necessitate that we establish an allowance for expected credit losses for certain debt securities and other financial assets. While we are currently unable to reasonably estimate the impact of adopting ASU 2016-13, we expect that the impact of adoption will be significantly influenced by the composition, characteristics and quality of our loan and securities portfolios as well as the prevailing economic conditions and forecasts as of the adoption date. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Recent Authoritative Accounting Guidance, (Continued) ASU 2017-04, “ Intangibles - Goodwill and Other (Topic 350 ) - Simplifying the Test for Goodwill Impairment. ” ASU 2017-04 eliminates Step 2 from the goodwill impairment test which required entities to compute the implied fair value of goodwill. Under ASU 2017-04, an entity should perform its annual, or interim, goodwill impairment test by comparing the fair value of a reporting unit with its carrying amount. An entity should recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value; however, the loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. ASU 2017-04 will be effective for the Company on January 1, 2021, with earlier adoption permitted and is not currently expected to have a significant impact on the consolidated financial statements. ASU 2017-09, “ Compensation - Stock Compensation (Topic 718 ) - Scope of Modification Accounting. ” ASU 2017-09 clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. Under ASU 2017-09, an entity will not apply modification accounting to a share-based payment award if all of the following are the same immediately before and after the change: (i) the award's fair value, (ii) the award's vesting conditions and (iii) the award's classification as an equity or liability instrument. ASU 2017-09 became effective for the Company on January 1, 2018 and did not have a significant impact on the consolidated financial statements. ASU 2017-12, “ Derivatives and Hedging (Topic 815 ) - Targeted Improvements to Accounting for Hedging Activities .” ASU 2017-12 amends the hedge accounting recognition and presentation requirements in ASC 815 to improve the transparency and understandability of information conveyed to financial statement users about an entity’s risk management activities to better align the entity’s financial reporting for hedging relationships with those risk management activities and to reduce the complexity of and simplify the application of hedge accounting. ASU 2017-12 will be effective for us on January 1, 2020 and is not expected to have a significant impact on the consolidated financial statements. ASU 2018-02 , “Income Statement - Reporting Comprehensive Income (Topic 220) - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” Under ASU 2018-02, entities may elect to reclassify certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act, which was enacted on December 22, 2017, from accumulated other comprehensive income to retained earnings. ASU 2018-02 also requires certain accounting policy disclosures. The Company elected to adopt this change in accounting principle in the fourth quarter of 2017, which resulted in a decrease to retained earnings and an increase to accumulated other comprehensive income of $245 in 2017 on the Company’s consolidated statement of changes in stockholders’ equity. ASU 2018-13 , “Fair Value Measurement (Topic 820) - Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement.” ASU 2018-13 modifies the disclosure requirements on fair value measurements in Topic 820. The amendments in this update remove disclosures that no longer are considered cost beneficial, modify/clarify the specific requirements of certain disclosures, and add disclosure requirements identified as relevant. ASU 2018-13 will be effective for us on January 1, 2021, with early adoption permitted, and is not expected to have a significant impact on our consolidated financial statements.

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	The amortized cost and fair value of available for sale securities and the related gross unrealized gains and losses recognized in accumulated other comprehensive income (loss) at December 31, 2018 and 2017 were as follows: December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value U. S. Treasury and other U. S. government agencies $ 568 $ — $ (14 ) $ 554 State and municipal 232,589 879 (4,170 ) 229,298 Corporate bonds 3,130 — (113 ) 3,017 Mortgage backed securities 32,172 34 (248 ) 31,958 Asset backed securities 28,635 — (639 ) 27,996 Time deposits 3,500 — — 3,500 Total $ 300,594 $ 913 $ (5,184 ) $ 296,323 December 31, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value U. S. Treasury and other U. S. government agencies $ 586 $ — $ (8 ) $ 578 State and municipal 189,576 3,081 (905 ) 191,752 Corporate bonds 1,500 5 (13 ) 1,492 Mortgage backed securities 6,262 3 (96 ) 6,169 Asset backed securities 16,753 45 (88 ) 16,710 Time deposits 3,500 — — 3,500 Total $ 218,177 $ 3,134 $ (1,110 ) $ 220,201
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of available for sale securities at December 31, 2018 are presented below by contractual maturity. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Securities not due at a single maturity date are shown separately. Amortized Cost Estimated Fair Value Due within one year $ 3,358 $ 3,360 Due in one to five years 4,807 4,763 Due in five to ten years 13,576 13,376 Due after ten years 218,046 214,870 Mortgage backed securities 32,172 31,958 Asset backed securities 28,635 27,996 Total $ 300,594 $ 296,323
Schedule of Unrealized Loss on Investments	The following table shows available for sale securities with unrealized losses and their estimated fair value aggregated by investment category and length of time that individual securities had been in a continuous unrealized loss position as of December 31, 2018 : Less than 12 months 12 months or more Total Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Loss U. S. Treasury and other U. S. government agencies $ — $ — $ 555 $ 14 $ 555 $ 14 State and municipal 118,580 2,263 47,223 1,907 165,803 4,170 Corporate bonds 2,526 105 492 8 3,018 113 Mortgage backed securities 17,015 99 5,397 149 22,412 248 Asset backed securities 20,351 383 7,255 256 27,606 639 Total temporarily impaired $ 158,472 $ 2,850 $ 60,922 $ 2,334 $ 219,394 $ 5,184 NOTE 2 - SECURITIES (CONTINUED) The following table shows available for sale securities with unrealized losses and their estimated fair value aggregated by investment category and length of time that individual securities had been in a continuous unrealized loss position as of December 31, 2017 : Less than 12 months 12 months or more Total Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Loss Estimated Fair Value Unrealized Loss U. S. Treasury and other U.S. government agencies $ 86 $ 1 $ 491 $ 7 $ 577 $ 8 State and municipal 19,899 128 34,946 777 54,845 905 Corporate bonds — — 487 13 487 13 Mortgage backed securities 2,412 14 3,349 82 5,761 96 Asset backed securities 8,971 73 854 15 9,825 88 Total temporarily impaired $ 31,368 $ 216 40,127 894 $ 71,495 $ 1,110

Loans and Allowance for Loan _2

Loans and Allowance for Loan Losses (Tables)	12 Months Ended
	Dec. 31, 2018
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	Loans at December 31, 2018 and 2017 were comprised as follows: December 31, 2018 December 31, 2017 Commercial, Industrial and Agricultural $ 213,850 $ 138,706 Real Estate 1-4 Family Residential 225,863 111,932 1-4 Family HELOC 88,112 72,017 Multi-family and Commercial 447,840 261,044 Construction, Land Development and Farmland 220,801 156,452 Consumer 20,495 17,605 Other 14,106 14,694 Total 1,231,067 772,450 Less Deferred loan fees (costs) (9 ) 231 Allowance for possible loan losses 10,892 9,731 Loans, net $ 1,220,184 $ 762,488
Schedule of Credit Losses Related to Financing Receivables, Current and Noncurrent [Table Text Block]	Activity in the allowance for loan losses by portfolio segment was as follows for the year ended December 31, 2018 : Commercial Industrial and Agricultural Multi-family and Commercial Construction Land Development and Farmland 1-4 Family Residential Real Estate Beginning balance $ 2,538 $ 3,166 $ 2,434 $ 773 Charge-offs (381 ) (76 ) (215 ) (36 ) Recoveries 590 221 44 12 Provision (996 ) 1,118 237 584 Ending balance $ 1,751 $ 4,429 $ 2,500 $ 1,333 1-4 Family HELOC Consumer Other Total Beginning balance $ 595 $ 183 $ 42 $ 9,731 Charge-offs (6 ) (26 ) (47 ) (787 ) Recoveries 10 34 2 913 Provision 57 (7 ) 42 1,035 Ending balance $ 656 $ 184 $ 39 $ 10,892 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Activity in the allowance for loan losses by portfolio segment was as follows for the year ended December 31, 2017 : Commercial Industrial and Agricultural Multi-family and Commercial Construction Land Development and Farmland 1-4 Family Residential Real Estate Beginning balance $ 2,432 $ 2,737 $ 1,786 $ 1,178 Charge-offs (976 ) — (45 ) (14 ) Recoveries 378 — 5 — Provision 704 429 688 (391 ) Ending balance $ 2,538 $ 3,166 $ 2,434 $ 773 1-4 Family HELOC Consumer Other Total Beginning balance $ 704 $ 208 $ 37 $ 9,082 Charge-offs — (36 ) — (1,071 ) Recoveries 19 2 — 404 Provision (128 ) 9 5 1,316 Ending balance $ 595 $ 183 $ 42 $ 9,731 Activity in the allowance for loan losses by portfolio segment was as follows for the year ended December 31, 2016 : Commercial Industrial and Agricultural Multi-family and Commercial Construction Land Development and Farmland 1-4 Family Residential Real Estate Beginning balance $ 2,198 $ 2,591 $ 894 $ 1,214 Charge-offs (84 ) — — (25 ) Recoveries 323 18 6 66 Provision (5 ) 128 886 (77 ) Ending balance $ 2,432 $ 2,737 $ 1,786 $ 1,178 1-4 Family HELOC Consumer Other Total Beginning balance $ 699 $ 192 $ 35 $ 7,823 Charge-offs — — (36 ) (145 ) Recoveries 11 12 — 436 Provision (6 ) 4 38 968 Ending balance $ 704 $ 208 $ 37 $ 9,082
Schedule of Allowance for Credit Losses and Finance Receivables by Portfolio Individually and Collectively Evaluated for Impairment [Table Text Block]	The allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of December 31, 2018 was as follows: Commercial Industrial and Agricultural Multi-family and Commercial Construction Land Development and Farmland 1-4 Family Residential Real Estate Allowance for loan losses Individually evaluated for impairment $ 38 $ — $ 17 $ — Acquired with credit impairment — — — — Collectively evaluated for impairment 1,713 4,429 2,483 1,333 Total $ 1,751 $ 4,429 $ 2,500 $ 1,333 Loans Individually evaluated for impairment $ 978 $ 1,160 $ 1,780 $ 1,246 Acquired with credit impairment 40 232 1,751 262 Collectively evaluated for impairment 212,832 446,448 217,270 224,355 Total $ 213,850 $ 447,840 $ 220,801 $ 225,863 1-4 Family HELOC Consumer Other Total Allowance for loan losses Individually evaluated for impairment $ — $ — $ — $ 55 Acquired with credit impairment — — — — Collectively evaluated for impairment 656 184 39 10,837 Total $ 656 $ 184 $ 39 $ 10,892 Loans Individually evaluated for impairment $ — $ 12 $ — $ 5,176 Acquired with credit impairment — 11 — 2,296 Collectively evaluated for impairment 88,112 20,472 14,106 1,223,595 Total $ 88,112 $ 20,495 $ 14,106 $ 1,231,067 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) The allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of December 31, 2017 was as follows: Commercial Industrial and Agricultural Multi-family and Commercial Construction Land Development and Farmland 1-4 Family Residential Real Estate Allowance for loan losses Individually evaluated for impairment $ 606 $ — $ 57 $ — Acquired with credit impairment 2 — 2 — Collectively evaluated for impairment 1,930 3,166 2,375 773 Total $ 2,538 $ 3,166 $ 2,434 $ 773 Loans Individually evaluated for impairment $ 3,649 $ 1,921 $ 3,800 $ 2,114 Acquired with credit impairment 276 1,157 1,436 45 Collectively evaluated for impairment 134,781 257,966 151,216 109,773 Total $ 138,706 $ 261,044 $ 156,452 $ 111,932 1-4 Family HELOC Consumer Other Total Allowance for loan losses Individually evaluated for impairment $ — $ — $ — $ 663 Acquired with credit impairment — — — 4 Collectively evaluated for impairment 595 183 42 9,064 Total $ 595 $ 183 $ 42 $ 9,731 Loans Individually evaluated for impairment $ 90 $ — $ — $ 11,574 Acquired with credit impairment — — — 2,914 Collectively evaluated for impairment 71,927 17,605 14,694 757,962 Total $ 72,017 $ 17,605 $ 14,694 $ 772,450
Schedule of Financing Receivables, Non Accrual Status [Table Text Block]	Non-accrual loans by class of loan were as follows: December 31, 2018 December 31, 2017 Commercial, Industrial and Agricultural $ 279 $ 2,110 Multi-family and Commercial Real Estate — — Construction, Land Development and Farmland 1,294 2,518 1-4 Family Residential Real Estate 2,556 533 1-4 Family HELOC — — Consumer 65 — Total $ 4,194 $ 5,161
Impaired Financing Receivables [Table Text Block]	Individually impaired loans by class of loans were as follows at December 31, 2018 : Unpaid Recorded Investment with no Allowance Recorded Recorded Investment with Allowance Recorded Total Recorded Related Commercial, Industrial and Agricultural $ 1,247 $ 765 $ 253 $ 1,018 $ 38 Multi-family and Commercial Real Estate 1,670 1,392 — 1,392 — Construction, Land Development and Farmland 3,920 3,359 172 3,531 17 1-4 Family Residential Real Estate 2,243 1,508 — 1,508 — 1-4 Family HELOC — — — — — Consumer 29 23 — 23 — Total $ 9,109 $ 7,047 $ 425 $ 7,472 $ 55 Individually impaired loans by class of loans were as follows at December 31, 2017 : Unpaid Recorded Investment with no Allowance Recorded Recorded Investment with Allowance Recorded Total Recorded Related Commercial, Industrial and Agricultural $ 4,398 $ 2,959 $ 966 $ 3,925 $ 608 Multi-family and Commercial Real Estate 3,427 3,078 — 3,078 — Construction, Land Development and Farmland 5,317 3,249 1,987 5,236 59 1-4 Family Residential Real Estate 2,857 2,159 — 2,159 — 1-4 Family HELOC 90 90 — 90 — Total $ 16,089 $ 11,535 $ 2,953 $ 14,488 $ 667 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Individually impaired loans by class of loans were as follows at December 31, 2016 : Unpaid Recorded Investment with no Allowance Recorded Recorded Investment with Allowance Recorded Total Recorded Related Commercial, Industrial and Agricultural $ 6,383 $ 3,924 $ 1,780 $ 5,704 $ 747 Multi-family and Commercial Real Estate 5,666 2,914 1,974 4,888 6 Construction, Land Development and Farmland 4,124 3,854 171 4,025 17 1-4 Family Residential Real Estate 2,422 2,035 27 2,062 27 1-4 Family HELOC 2,075 1,178 317 1,495 62 Total $ 20,670 $ 13,905 $ 4,269 $ 18,174 $ 859
Impaired Financing Receivables, Average Recorded Investment [Table Text Block]	The average recorded investment in impaired loans for the years ended December 31, 2018 , 2017 and 2016 , was as follows: 2018 2017 2016 Commercial, Industrial and Agricultural $ 2,333 $ 5,225 $ 6,055 Multi-family and Commercial Real Estate 2,366 4,138 5,837 Construction, Land Development and Farmland 4,571 4,502 3,243 1-4 Family Residential Real Estate 2,468 2,212 2,715 1-4 Family HELOC 72 784 1,854 Consumer 62 — — Total $ 11,872 $ 16,861 $ 19,704
Financing Receivable Credit Quality Indicators [Table Text Block]	Credit quality indicators by class of loan were as follows at December 31, 2018 : Pass Special Mention Substandard Total Commercial, Industrial and Agricultural $ 212,761 $ — $ 1,089 $ 213,850 1-4 Family Residential Real Estate 221,546 1,125 3,192 225,863 1-4 Family HELOC 88,112 — — 88,112 Multi-family and Commercial Real Estate 442,127 3,135 2,578 447,840 Construction, Land Development and Farmland 218,053 579 2,169 220,801 Consumer 20,236 — 259 20,495 Other 14,106 — — 14,106 Total $ 1,216,941 $ 4,839 $ 9,287 $ 1,231,067 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Credit quality indicators by class of loan were as follows at December 31, 2017 : Pass Special Mention Substandard Total Commercial, Industrial and Agricultural $ 135,833 $ 5 $ 2,868 $ 138,706 1-4 Family Residential Real Estate 108,426 1,392 2,114 111,932 1-4 Family HELOC 71,927 — 90 72,017 Multi-family and Commercial Real Estate 259,123 — 1,921 261,044 Construction, Land Development and Farmland 149,886 2,998 3,568 156,452 Consumer 17,605 — — 17,605 Other 14,694 — — 14,694 Total $ 757,494 $ 4,395 $ 10,561 $ 772,450
Past Due Financing Receivables [Table Text Block]	Past due loan balances by class of loan were as follows at December 31, 2018 : 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Past Due Current Total Loans Commercial, Industrial and Agricultural $ 22 $ 153 $ 279 $ 454 $ 213,396 $ 213,850 1-4 Family Residential Real Estate 1,104 335 1,203 2,642 223,221 225,863 1-4 Family HELOC 50 — — 50 88,062 88,112 Multi-family and Commercial Real Estate — 104 — 104 447,736 447,840 Construction, Land Development and Farmland 214 — 171 385 220,416 220,801 Consumer 11 30 46 87 20,408 20,495 Other — — — — 14,106 14,106 Total $ 1,401 $ 622 $ 1,699 $ 3,722 $ 1,227,345 $ 1,231,067 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Past due loan balances by class of loan were as follows at December 31, 2017 : 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Past Due Current Total Loans Commercial, Industrial and Agricultural $ 7 $ — $ 1,548 $ 1,555 $ 137,151 $ 138,706 1-4 Family Residential Real Estate 617 — — 617 111,315 111,932 1-4 Family HELOC — 7 — 7 72,010 72,017 Multi-family and Commercial Real Estate 1,254 — — 1,254 259,790 261,044 Construction, Land Development and Farmland 265 444 2,073 2,782 153,670 156,452 Consumer 14 — — 14 17,591 17,605 Other — — — — 14,694 14,694 Total $ 2,157 $ 451 $ 3,621 $ 6,229 $ 766,221 $ 772,450
Troubled Debt Restructurings on Financing Receivables [Table Text Block]	Troubled debt restructurings occurring during the year ended December 31, 2018 by class of loan were as follows: Number of Contracts Pre-Modification Oustanding Recorded Investments Post-Modification Oustanding Recorded Investments 1-4 Family Residential Estate 1 $ 1,254 $ 1,254 Multi-family and Commercial Real Estate 1 661 585 Total 2 $ 1,915 $ 1,839 Troubled debt restructurings occurring during the year ended December 31, 2017 by class of loan were as follows: Number of Contracts Pre-Modification Oustanding Recorded Investments Post-Modification Oustanding Recorded Investments Construction, Land Development and Farmland 2 $ 2,110 $ 1,640 Total 2 $ 2,110 $ 1,640 Troubled debt restructurings occurring during the year ended December 31, 2016 by class of loan were as follows: Number of Contracts Pre-Modification Oustanding Recorded Investments Post-Modification Oustanding Recorded Investments 1-4 Family Residential Estate 1 $ 1,712 $ 1,712 Total 1 $ 1,712 $ 1,712
Schedule of Loans Acquired with Deteriorated Credit Quality [Table Text Block]	The carrying amount of those loans was as follows at December 31, 2018 and 2017 , respectively: 2018 2017 Commercial, Industrial and Agricultural $ 63 $ 298 Multi-family and Commercial Real Estate 233 1,217 Construction, Land Development and Farmland 1,958 1,508 1-4 Family Residential Real Estate 324 47 1-4 Family HELOC — — Consumer 18 — Total outstanding balance 2,596 3,070 Less remaining purchase discount 300 156 Allowance for loan losses — 4 Carrying amount, net of allowance $ 2,296 $ 2,910
Schedule of Activity Related to Accretable Yield of Loans Acquired with Evidence of Credit Quality Deterioration Since Origination [Table Text Block]	Activity related to the accretable portion of the purchase discount on loans acquired with deteriorated credit quality is as follows for the years ended December 31, 2018 , 2017 and 2016 : 2018 2017 2016 Balance at January 1, $ — $ 87 $ 233 New loans purchased 260 — — Loan charge offs (104 ) — — Accretion income (46 ) (87 ) (146 ) Balance at December 31, $ 110 $ — $ 87
Schedule of Related Party Transactions [Table Text Block]	An analysis of the activity with respect to loans to related parties for the years ended December 31, 2018 , 2017 and 2016 , is as follows: 2018 2017 2016 Balance - January 1, $ 8,581 $ 11,935 $ 10,484 New loans during the year 919 4,356 4,442 Repayments during the year (2,106 ) (7,710 ) (2,991 ) Balance - December 31, $ 7,394 $ 8,581 $ 11,935

Other Real Estate (Tables)

Other Real Estate (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Other Real Estate, Roll Forward	Other real estate activity for the years ended December 31, 2018 , 2017 and 2016 , was as follows: 2018 2017 2016 Beginning balance $ — $ — $ 1,149 Loans acquired in merger 1,650 — — Loans transferred to other real estate 1,060 — — Allowance to lower of cost or market — — (70 ) Sales of other real estate (1,710 ) — (1,079 ) End of year $ 1,000 $ — $ —
Real Estate Owned, Valuation Allowance, Roll Forward	Activity in the valuation allowance for the years ended December 31, 2018 , 2017 and 2016 , was as follows: 2018 2017 2016 Beginning balance $ — $ — $ — Provisions/(recoveries) charged/(credited) to expense — — 70 Reductions from sales of other real estate — — (70 ) Direct write-downs — — — End of year $ — $ — $ —
Schedule of Foreclosed Real Estate Expense	Expenses related to foreclosed assets for the years ended December 31, 2018 , 2017 and 2016 , include: 2018 2017 2016 Net gain on sales $ (259 ) $ (27 ) $ (301 ) Provision for unrealized losses — — 70 Operating expenses, net of rental income 50 7 22 Total $ (209 ) $ (20 ) $ (209 )

Fair Values of Assets and Lia_2

Fair Values of Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring	The following table sets forth the Company’s major categories of assets and liabilities measured at fair value on a recurring basis, by level within the fair value hierarchy, as of December 31, 2018 and 2017 : Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2018 Assets U. S. Treasury and other U. S. government agencies $ 554 $ — $ 554 $ — State and municipal 229,298 — 229,298 — Corporate bonds 3,017 — 3,017 — Mortgage backed securities 31,958 — 31,958 — Asset backed securities 27,996 — 27,996 — Time deposits 3,500 3,500 — — Interest rate swap 467 — 467 — Liabilities Interest rate swap $ 1,183 $ — $ 1,183 $ — December 31, 2017 Assets U. S. Treasury and other U. S. government agencies $ 578 $ — $ 578 $ — State and municipal 191,752 — 191,752 — Corporate bonds 1,492 — 1,492 — Mortgage backed securities 6,169 — 6,169 — Asset backed securities 16,710 — 16,710 — Time deposits 3,500 3,500 — — Interest rate swap 155 — 155 — Liabilities Interest rate swap $ 180 $ — $ 180 $ — NOTE 5 - FAIR VALUES OF ASSETS AND LIABILITIES (CONTINUED) The following table sets forth the Company’s major categories of assets and liabilities measured at fair value on a nonrecurring basis, by level within the fair value hierarchy, as of December 31, 2018 and 2017 : Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) December 31, 2018 Assets Impaired loans $ 370 $ — $ — $ 370 Other real estate owned 1,000 — — 1,000 December 31, 2017 Assets Impaired loans $ 2,286 $ — $ — $ 2,286
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques	Valuation Techniques (1) Significant Unobservable Inputs Range (Weighted Average) Impaired loans Appraisal Estimated costs to sell 10% Other real estate owned Appraisal Estimated costs to sell 10% (1) The fair value is generally determined through independent appraisals of the underlying collateral, which may include Level 3 inputs that are not identifiable, or by using the discounted cash flow method if the loan is not collateral dependent. Estimated cash flows change and appraised values of the assets or collateral underlying the loans will be sensitive to changes.
Fair Value, by Balance Sheet Grouping	Carrying amounts and estimated fair values of financial instruments, by level within the fair value hierarchy, at December 31, 2017 were as follows: Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets Cash and due from banks $ 20,497 $ 20,497 $ 20,497 $ — $ — Federal funds sold 171 171 — 171 — Loans, net 762,488 762,574 — — 762,574 Mortgage loans held for sale 45,322 46,467 — 46,467 — Accrued interest receivable 5,744 5,744 — 5,744 — Restricted equity securities 7,774 7,774 — 7,774 — Financial liabilities Deposits $ 883,519 $ 882,533 $ — $ — $ 882,533 Accrued interest payable 305 305 — 305 — Federal Home Loan Bank advances 96,747 96,754 — — 96,754 Carrying amounts and estimated fair values of financial instruments, by level within the fair value hierarchy, at December 31, 2018 were as follows: Carrying Amount Estimated Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Financial assets Cash and due from banks $ 34,807 $ 34,807 $ 34,807 $ — $ — Federal funds sold 371 371 — 371 — Loans, net 1,220,184 1,206,574 — — 1,206,574 Mortgage loans held for sale 15,823 15,871 — 15,871 — Accrued interest receivable 8,214 8,214 — 8,214 — Restricted equity securities 11,690 11,690 — 11,690 — Financial liabilities Deposits $ 1,437,903 $ 1,434,652 $ — $ — $ 1,434,652 Accrued interest payable 1,063 1,063 — 1,063 — Subordinate debentures 11,603 11,522 — — 11,522 Federal Home Loan Bank advances 57,498 57,434 — — 57,434

Premises and Equipment (Tables)

Premises and Equipment (Tables)	12 Months Ended
	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	The detail of premises and equipment at December 31, 2018 and 2017 is as follows: 2018 2017 Land $ 6,049 $ 1,211 Buildings 8,951 4,717 Construction in progress — 284 Leasehold improvements 7,551 4,727 Furniture, fixtures and equipment 10,311 8,145 32,862 19,084 Less: accumulated depreciation (10,829 ) (9,294 ) $ 22,033 $ 9,790

Restricted Equity Securities (T

Restricted Equity Securities (Tables)	12 Months Ended
	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Restricted Equity Securities	The Company owned the following restricted equity securities as of December 31, 2018 and 2017 : 2018 2017 Federal Reserve Bank $ 5,735 $ 3,546 Federal Home Loan Bank 5,955 4,228 Total $ 11,690 $ 7,774

Goodwill and Core Deposit Int_2

Goodwill and Core Deposit Intangibles (Tables)	12 Months Ended
	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Acquired Finite-Lived Intangible Assets by Major Class	The following presents the balances as of December 31, 2018 , and 2017 , of intangible assets acquired in business acquisitions: 2018 2017 Goodwill $ 43,642 $ 11,404 Amortized intangible assets: Core deposit intangibles $ 10,111 $ 2,946 Less accumulated amortization (1,892 ) (1,666 ) $ 8,219 $ 1,280
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Estimated future amortization expense by year as of December 31, 2018 is as follows: 2019 $ 949 2020 949 2021 949 2022 949 2023 865 Thereafter 3,558 Total $ 8,219

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Time Deposit Maturities	Contractual maturities of time deposit accounts for the next five years at December 31, 2018 are as follows: 2019 $ 588,815 2020 49,259 2021 9,934 2022 8,174 2023 9,258 Total $ 665,440

Federal Home Loan Bank Advanc_2

Federal Home Loan Bank Advances (Tables)	12 Months Ended
	Dec. 31, 2018
Federal Home Loan Banks [Abstract]
Federal Home Loan Bank, Advances	At December 31, advances from the Federal Home Loan Bank were as follows: 2018 2017 Maturities January 2019 through March 2024, fixed rates ranging from 1.22% to 2.86% ($54,000 is due in the year ending December 31, 2019) $ 57,498 $ 96,747
Schedule of Maturities of Long-term Debt	Required future principal payments on Federal Home Loan Bank borrowings are as follows: 2019 $ 53,857 2020 721 2021 963 2022 612 2023 1,117 Thereafter 228 Total $ 57,498

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The income tax expense consists of the following for the years ended December 31: 2018 2017 2016 Income tax expense Current $ 992 $ 1,438 $ 1,978 Deferred 380 504 235 Total provision for income tax expense $ 1,372 $ 1,942 $ 2,213
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the income tax expense for the years ended December 31, 2018 , 2017 and 2016 from the “expected” tax expense computed by applying the statutory federal income tax rate of 21 percent for 2018 and 34 percent for 2017 and 2016 to income before income taxes is as follows: 2018 2017 2016 Computed “expected” tax expense $ 2,495 21 % $ 2,756 34 % $ 3,437 34 % Increase (decrease) in tax expense resulting from: Federal income tax rate change — — % 620 8 % — — % State tax expense, net of federal tax effect 551 5 % 331 4 % 404 4 % Tax exempt interest (1,422 ) (12 )% (1,452 ) (18 )% (923 ) (9 )% Disallowed interest expense 290 2 % 193 2 % 56 1 % Incentive stock options 19 — % 33 — % 22 — % Cash surrender value of life insurance contracts (249 ) (2 )% (285 ) (4 )% (255 ) (3 )% Officers life insurance expense — — % — — % 7 — % Excess tax benefit from stock compensation (88 ) (1 )% (184 ) (2 )% (478 ) (5 )% Nondeductible merger expenses 12 — % 173 2 % — — % Federal and state tax credits (1,102 ) (9 )% (667 ) (8 )% (499 ) (5 )% Benefit of subsidiary net loss — — % — — % — — % Subsidiary disregarded for federal taxes 763 6 % 347 4 % 378 4 % Others as a group 103 1 % 77 1 % 64 1 % Total income tax expense $ 1,372 11 % $ 1,942 23 % $ 2,213 22 %
Schedule of Deferred Tax Assets and Liabilities	Significant components of deferred tax assets as of December 31, 2018 and 2017 are as follows: 2018 2017 Organizational and start-up costs $ 68 $ 98 Core deposit intangible (2,046 ) (215 ) Acquisition fair value adjustments 817 30 Allowance for loan losses 2,577 1,876 Loan fees (costs) (1 ) 60 Other real estate 577 — Premises and equipment (791 ) (427 ) Unrealized (gain) loss on available for sale securities 1,115 (528 ) Unrealized loss on derivatives 187 7 Non-accrual loans 280 170 Acquired net operating losses 2,966 — Acquired tax credits net of basis adjustments 1,005 — Deferred compensation 443 — Other 231 28 Total $ 7,428 $ 1,099 State $ 688 $ 114 Federal 6,740 985 Net deferred tax asset $ 7,428 $ 1,099

Stock-based Compensation (Table

Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Activity in the Stock Option Plan	A summary of the activity in the stock option plan for the periods ended December 31, 2018 , 2017 and 2016 , is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at January 1, 2016 708,921 $ 10.73 Granted 41,500 15.57 Exercised (476,889 ) 10.03 Forfeited or expired (31,991 ) 10.61 Outstanding at December 31, 2016 241,541 12.96 5.41 years $ 2,065 Exercisable at December 31, 2016 144,941 12.11 3.25 years 1,363 Vested and anticipated vesting shares as of December 31, 2016 238,643 12.89 5.41 years 2,003 Granted 15,500 23.55 Exercised (72,080 ) 11.42 Forfeited or expired (14,200 ) 14.06 Outstanding at December 31, 2017 170,761 14.48 5.73 years 1,905 Exercisable at December 31, 2017 95,861 13.00 3.75 years 1,212 Vested and anticipated vesting shares as of December 31, 2017 168,514 14.45 5.73 years 1,848 Granted 25,500 28.00 9.58 years Exercised (30,001 ) 13.27 3.63 years Forfeited or expired (7,000 ) 18.20 8.40 years Outstanding at December 31, 2018 159,260 16.72 6.04 years 1,146 Exercisable at December 31, 2018 88,060 13.45 4.32 years 847 Vested and anticipated vesting shares as of December 31, 2018 157,124 $ 16.67 6.01 years $ 1,002
Schedule of Nonvested Share Activity	A summary of changes in the Company's non-vested options for the years ended December 31, 2018 , 2017 and 2016 are as follows: Shares Weighted Average Grant-Date Fair Value Non-vested options at January 1, 2016 84,160 $ 2.90 Granted 41,500 3.89 Vested (24,260 ) 2.76 Forfeited (4,800 ) 2.92 Non-vested options at December 31, 2016 96,600 3.36 Granted 15,500 6.66 Vested (23,000 ) 6.95 Forfeited (14,200 ) 3.18 Non-vested options at December 31, 2017 74,900 4.14 Granted 25,500 7.10 Vested (22,200 ) 6.69 Forfeited (7,000 ) 4.77 Non-vested options at December 31, 2018 71,200 $ 5.28
Schedule of Information Related to Stock Option Plan	Information related to the stock option plan during each year follows and assumes a 3% forfeiture rate: 2018 2017 2016 Intrinsic value of options exercised $ 344 $ 827 $ 2,272 Cash received from option exercises 398 823 4,772 Tax benefit realized from option exercises 88 184 478 Weighted average fair value of options granted 7.10 6.66 3.89
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The fair value of options granted during 2018 and 2017 was determined using the following assumptions as of the grant date, resulting in an estimated fair value per option of $6.89 and $6.46 , respectively. 2018 2017 2016 Risk-free interest rate 2.95% 2.30% — 2.45% 1.33% — 2.45% Expected term (in years) 6.5 years 6.5 years 6.5 — 10 years Expected stock price volatility 23.50% 24% — 29.90% 21% — 24.00% Dividend yield 1.14% 0.98% — 1.02% 1.02% — 1.57%
Nonvested Restricted Stock Shares Activity	The following table shows the activity related to non-vested restricted stock for the periods ended December 2018 , 2017 and 2016 : Shares Weighted Average Grant-Date Non-vested shares at January 1, 2016 30,500 $ 13.65 Granted 23,800 15.24 Vested (3,835 ) 14.54 Forfeited (2,000 ) 13.65 Non-vested shares at December 31, 2016 48,465 14.36 Granted 50,050 23.65 Vested (13,016 ) 14.21 Forfeited (3,000 ) 14.18 Non-vested shares at December 31, 2017 82,499 20.03 Granted 51,710 27.55 Vested (21,999 ) 15.95 Forfeited (1,550 ) 25.17 Non-vested shares at December 31, 2018 110,660 $ 24.28

Capital (Tables)

Capital (Tables)	12 Months Ended
	Dec. 31, 2018
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	Actual and required capital amounts and ratios are presented below as of December 31, 2018 and 2017 . Actual Regulatory Capital Minimal Capital Adequacy Minimum Required Capital Including Capital Conservation Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio December 31, 2018 Company Tier I leverage $ 168,876 10.38 % $ 65,077 4.00 % $ 65,077 4.000 % $ 81,347 5.00 % Common equity Tier 1 157,273 11.59 % 61,064 4.50 % 86,507 6.375 % 88,203 6.50 % Tier I risk-based capital 168,876 12.44 % 81,451 6.00 % 106,905 7.875 % 108,602 8.00 % Total risk-based capital 180,193 13.28 % 108,550 8.00 % 133,991 9.875 % 135,688 10.00 % Bank Tier I leverage $ 165,308 10.17 % $ 65,018 4.00 % $ 65,018 4.000 % $ 81,272 5.00 % Common equity Tier 1 165,308 12.19 % 61,024 4.50 % 86,451 6.375 % 88,146 6.50 % Tier I risk-based capital 165,308 12.19 % 81,366 6.00 % 106,792 7.875 % 108,488 8.00 % Total risk-based capital 176,625 13.02 % 108,525 8.00 % 133,961 9.875 % 135,657 10.00 % December 31, 2017 Company Tier I leverage $ 126,234 11.89 % $ 42,467 4.00 % $ 42,467 4.000 % $ 53,084 5.00 % Common equity Tier 1 126,234 13.90 % 40,867 4.50 % 52,219 5.750 % 59,030 6.50 % Tier I risk-based capital 126,234 13.90 % 54,489 6.00 % 65,841 7.250 % 72,653 8.00 % Total risk-based capital 135,965 14.97 % 72,660 8.00 % 84,013 9.250 % 90,825 10.00 % Bank Tier I leverage $ 123,862 11.68 % $ 42,418 4.00 % $ 42,418 4.000 % $ 53,023 5.00 % Common equity Tier 1 123,862 13.67 % 40,774 4.50 % 52,100 5.750 % 58,896 6.50 % Tier I risk-based capital 123,862 13.67 % 54,365 6.00 % 65,691 7.250 % 72,487 8.00 % Total risk-based capital 133,593 14.74 % 72,506 8.00 % 83,835 9.250 % 90,633 10.00 %

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2018
Leases [Abstract]
Lessee, Operating Lease, Disclosure	A summary of the Company’s leased facilities (other than month-to-month agreements) follows: Base Lease Renewal Escalation Property Description (In Tennesee unless noted) Expiration Date Terms Clause 1736 Carothers Parkway, Brentwood February 28, 2025 15 years 3% annually 6005 Nolensville Road, Nashville September 30, 2018 — 3% annually 5109 Peter Taylor Park Drive, Brentwood July 31, 2016 10 years 3% annually 101 Creekstone Boulevard, Franklin March 31, 2020 10 years 2% annually 105 Continental Place, Brentwood December 31, 2020 — 3% annually 633 Chestnut St., Chattanooga October 31, 2028 10 years 2% annually 6100 Tower Circle, Franklin December 31, 2027 — 2.5% annually 1835 E. Northfield Blvd. Murfreesboro September 30, 2027 5 years 3% annually 1412 Trotwood Ave., Columbia December 31, 2021 — None 4108 Hillsboro Pike, Nashville October 31, 2021 — 10% after 5th year of initial term and 12% thereafter for renewals
Schedule of Future Minimum Rental Payments for Operating Leases	The Company has classified all leases as operating lease agreements for office space, copiers, and an automobile. Future minimum rental payments required under the terms of the non-cancellable leases are as follows: Year Ending December 31, 2019 $ 2,216 2020 2,254 2021 1,943 2022 1,649 2023 1,685 Thereafter 4,650 Total $ 14,397

Financial Instruments with Of_2

Financial Instruments with Off-Balance-Sheet Risk (Tables)	12 Months Ended
	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Off-balance Sheet Risks	The contractual amounts of financial instruments with off-balance-sheet risk at December 31, 2018 and 2017 were as follows: 2018 2017 Unused lines of credit Fixed $ 44,053 $ 49,637 Variable 209,898 135,951 Standby letters of credit 16,544 13,176 Total $ 270,496 $ 198,764

Derivatives (Tables)

Derivatives (Tables)	12 Months Ended
	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	Summary information related to the interest rate swaps designated as cash flow hedges for the year ended December 31, 2018 is as follows: Notional amounts $ 60,000 Weighted average pay rates 3.338 % Weighted average receive rates 2.856 % Weighted average maturity 4.47 years Unrealized losses $ 1,153
Derivative Instruments, Gain (Loss)	The following table reflects the fair value hedges included in the Consolidated Statements of Operations as of December 31: Interest rate contracts Location 2018 2017 2016 Change in fair value on interest rate swaps hedging investments Interest income $ 462 $ 47 $ 422 The following table presents the net gains (losses) recorded in accumulated other comprehensive income and the Consolidated Statements of Operations relating to the cash flow derivative instruments for the years ended: Amount of Gain (Loss) Recognized in OCI Amount of Gain (Loss) Reclassified from OCI to Interest Income Amount of Gain (Loss) Recognized in Other Non-Interest Income (Ineffective Portion) December 31, 2016 Interest rate contracts $ — $ — $ — December 31, 2017 Interest rate contracts — — — December 31, 2018 Interest rate contracts $ (1,153 ) $ — $ —
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following table reflects the cash flow hedges included in the Consolidated Balance Sheets as of December 31, 2018 and 2017: 2018 2017 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Total included in other assets $ — $ — $ — $ — Included in other liabilities: Interest rate swaps related to subordinate debentures $ 10,000 $ 174 $ — $ — Interest rate swaps related to Federal Home Loan Bank borrowings 50,000 979 — — Total included in other liabilities $ 60,000 $ 1,153 $ — $ —
Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location	The following table reflects the fair value hedges included in the Consolidated Balance Sheets as of December 31: 2018 2017 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Interest rate swaps related to investments $ 16,902 $ 467 $ 9,882 $ 155 Total included in other assets $ 16,902 $ 467 $ 9,882 $ 155 Included in other liabilities: Interest rate swaps related to investments $ 4,203 $ 30 $ 11,623 $ 180 Total included in other liabilities $ 4,203 $ 30 $ 11,623 $ 180

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following is a summary of the components comprising basic and diluted earnings per common share of stock (EPS) for the years ended December 31,: Year Ended 2018 2017 2016 Basic EPS Computation Net income attributable to common shareholders $ 14,085 $ 7,246 $ 8,936 Weighted average common shares outstanding 11,389,122 8,151,492 7,586,993 Basic earnings per common share $ 1.24 $ 0.89 $ 1.18 Diluted EPS Computation Net income attributable to common shareholders $ 14,085 $ 7,246 $ 8,936 Weighted average common shares outstanding 11,389,122 8,151,492 7,586,993 Dilutive effect of stock options and restricted shares 79,667 87,809 104,500 Adjusted weighted average common shares outstanding 11,468,789 8,239,301 7,691,493 Diluted earnings per common share $ 1.23 $ 0.88 $ 1.16

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment	The following tables present summarized results of operations for the Company’s business segments: Year Ended December 31, 2018 Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 53,008 $ 821 $ — $ 53,829 Provision for loan losses 1,035 — — 1,035 Noninterest income 5,232 4,595 (181 ) 9,646 Noninterest expense 41,512 9,049 — 50,561 Income tax expense (benefit) 1,608 (236 ) — 1,372 Net income (loss) 14,085 (3,397 ) (181 ) 10,507 Noncontrolling interest in net loss of subsidiary — 3,397 181 3,578 Net income attributable to common shareholders $ 14,085 $ — $ — $ 14,085 Year Ended December 31, 2017 Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 33,761 $ 726 $ — $ 34,487 Provision for loan losses 1,316 — — 1,316 Noninterest income 2,333 3,805 (128 ) 6,010 Noninterest expense 25,524 5,552 — 31,076 Income tax expense (benefit) 2,008 (66 ) — 1,942 Net income 7,246 (955 ) (128 ) 6,163 Noncontrolling interest in net income of subsidiary — 955 128 1,083 Net income attributable to common shareholders $ 7,246 $ — $ — $ 7,246 Year Ended December 31, 2016 Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 32,035 $ 617 $ — $ 32,652 Provision for loan losses 968 — — 968 Noninterest income 2,481 6,319 — 8,800 Noninterest expense 22,327 8,047 — 30,374 Income tax expense (benefit) 2,285 (72 ) — 2,213 Net income 8,936 (1,039 ) — 7,897 Noncontrolling interest in net income of subsidiary — 1,039 — 1,039 Net income attributable to common shareholders $ 8,936 $ — $ — $ 8,936

Business Combination (Tables)

Business Combination (Tables)	12 Months Ended
	Dec. 31, 2018
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition	The following table details the financial impact of the merger, including the calculation of the purchase price, the allocation of the purchase price to the fair values of net assets assumed and goodwill recognized: Calculation of Purchase Price Shares of Community First, Inc. common stock outstanding as of December 31, 2017 5,025,884 Exchange ratio for Reliant Bancorp, Inc. common stock 0.481 Share conversion 2,417,450 Reliant Bancorp, Inc. common stock shares issued 2,416,444 Reliant Bancorp, Inc. share price at December 29, 2017 $ 25.64 Value of Reliant Bancorp, Inc. common stock shares issued $ 61,958 Value of fractional shares $ 25 Estimated fair value of Community First, Inc. $ 61,983 NOTE 22 - BUSINESS COMBINATION (CONTINUED) Allocation of Purchase Price Total consideration above $ 61,983 Fair value of assets acquired and liabilities assumed Cash and cash equivalents (33,128 ) Time deposits in other financial institutions (23,309 ) Investment securities available for sale (69,078 ) Loans, net of unearned income (313,040 ) Mortgage loans held for sale, net (910 ) Accrued interest receivable (1,165 ) Premises and equipment (9,585 ) Restricted equity securities (1,726 ) Cash surrender value of life insurance contracts (10,664 ) Other real estate owned (1,650 ) Deferred tax asset, net (4,885 ) Core deposit intangible (7,888 ) Other assets (1,795 ) Deposits—noninterest-bearing 80,395 Deposits—interest-bearing 352,100 Other borrowings 11,522 Payables and other liabilities 5,061 Net liabilities assumed (net assets acquired) (29,745 ) Goodwill $ 32,238
Business Acquisition, Pro Forma Information	Pro forma data for the years ended December 31, 2017 and 2016 , in the table below presents information as if the merger occurred at the beginning of each year. 2017 2016 Net interest income $ 51,031 $ 48,724 Net income attributable to common shareholders $ 6,387 $ 17,660 Earnings per share - basic $ 0.60 $ 1.84 Earnings per share - diluted $ 0.60 $ 1.82

Quarterly Financial Results (_2

Quarterly Financial Results (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information	The following is a summary of consolidated quarterly financial results for the year ended December 31, 2018 : First Second Third Fourth Interest income $ 16,362 $ 16,830 $ 17,570 $ 18,463 Net interest income 13,382 13,404 13,466 13,577 Consolidated net income 3,277 1,202 3,240 2,788 Noncontrolling interest in net loss of subsidiary 464 937 842 1,335 Net income attributable to common shareholders 3,741 2,139 4,082 4,123 Basic earnings per share $ 0.33 $ 0.19 $ 0.36 $ 0.36 Diluted earnings per share $ 0.33 $ 0.19 $ 0.36 $ 0.36 The following is a summary of consolidated quarterly financial results for the year ended December 31, 2017 : First Second Third Fourth Interest income $ 8,973 $ 9,704 $ 10,627 $ 10,854 Net interest income 7,971 8,503 9,096 8,917 Consolidated net income 1,559 1,794 1,840 970 Noncontrolling interest in net loss of subsidiary 499 393 6 185 Net income attributable to common shareholders 2,058 2,187 1,846 1,155 Basic earnings per share $ 0.27 $ 0.28 $ 0.23 $ 0.13 Diluted earnings per share $ 0.26 $ 0.28 $ 0.22 $ 0.13 The following is a summary of consolidated quarterly financial results for the year ended December 31, 2016 : First Second Third Fourth Interest income $ 8,914 $ 9,497 $ 8,656 $ 8,948 Net interest income 8,082 8,692 7,835 8,043 Consolidated net income 2,558 2,137 1,763 1,439 Noncontrolling interest in net (income) loss of subsidiary (321 ) 223 605 532 Net income attributable to common shareholders 2,237 2,360 2,368 1,971 Basic earnings per share $ 0.30 $ 0.31 $ 0.31 $ 0.26 Diluted earnings per share $ 0.30 $ 0.31 $ 0.30 $ 0.25

Parent Company Condensed Fina_2

Parent Company Condensed Financial Information (Tables)	12 Months Ended
	Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Condensed Balance Sheet	The following tables present parent company condensed financial statements for Reliant Bancorp, Inc.: CONDENSED BALANCE SHEET DECEMBER 31, 2018 2017 ASSETS Cash and cash equivalents $ 1,985 $ 1,709 Investment in subsidiaries 225,446 137,765 Other assets 3,447 1,841 Total assets $ 230,878 $ 141,315 LIABILITIES AND SHAREHOLDERS' EQUITY Dividend payable $ 1,036 $ 542 Accrued expenses and other liabilities 406 636 Subordinate debentures 21,022 — Shareholders' equity 208,414 140,137 Total liabilities and shareholders' equity $ 230,878 $ 141,315
Condensed Income Statement	CONDENSED STATEMENT OF INCOME YEARS ENDED DECEMBER 31, 2018 2017 2016 Dividends from subsidiaries $ 7,521 $ 2,141 $ 3,161 Interest expense 1,277 — — Other expense 4,775 2,920 1,326 Income before income tax and undistributed income from subsidiaries 1,469 (779 ) 1,835 Income tax expense (benefit) (1,537 ) (922 ) (508 ) Equity in undistributed income from subsidiaries 11,079 7,103 6,593 Net income attributable to common shareholders $ 14,085 $ 7,246 $ 8,936
Condensed Cash Flow Statement	CONDENSED STATEMENT OF CASH FLOWS YEARS ENDED DECEMBER 31, 2018 2017 2016 Cash flows from operating activities Net income attributable to common shareholders $ 14,085 $ 7,246 $ 8,936 Reclassification of federal income tax rate change — (245 ) — Adjustments: Equity in undistributed income from subsidiaries (11,079 ) (7,103 ) (6,593 ) Accretion related to subordinated debentures 969 — — Change in other assets (1,333 ) 790 (219 ) Change in other liabilities (230 ) 595 (582 ) Net cash from operating activities 2,412 1,283 1,542 Cash flows from investing activities Investment in subsidiary — (21,195 ) (4,772 ) Net cash used in investing activities — (21,195 ) (4,772 ) Cash flows from financing activities Dividends paid (3,451 ) (3,193 ) (1,489 ) Redemption of common stock (6 ) — — Proceeds from equity issuances, net 1,321 24,648 4,772 Net cash from (used in) financing activities (2,136 ) 21,455 3,283 Net change in cash and cash equivalents 276 1,543 53 Beginning cash and cash equivalents 1,709 166 113 Ending cash and cash equivalents $ 1,985 $ 1,709 $ 166

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) - USD ($)

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, 2016

Sep. 30, 2016

Jun. 30, 2016

Mar. 31, 2016

Dec. 31, 2018

Dec. 31, 2017

Dec. 31, 2016

Jan. 01, 2020

Noncontrolling Interest [Line Items]

Federal funds sold

$ 371,000

$ 171,000

$ 371,000

$ 171,000

Valuation allowance attributable to mortgage loans held for sale

$ 160,000

Excess tax benefit from stock compensation

(88,000)

(184,000)

$ (478,000)

Share based compensation, effect on diluted earnings per share

$ 0.06

Reserve requirement Federal Reserve Bank

$ 0

$ 2,636,000

0

2,636,000

Advertising expense

559,000

264,000

$ 684,000

Income tax expense (benefit)

$ 1,372,000

$ 1,942,000

$ 2,213,000

Diluted earnings per common share (in dollars per share)

$ 0.36

$ 0.36

$ 0.19

$ 0.33

$ 0.13

$ 0.22

$ 0.28

$ 0.26

$ 0.25

$ 0.30

$ 0.31

$ 0.30

$ 1.23

$ 0.88

$ 1.16

Accounting Standards Update 2018-02 | Retained Earnings

Noncontrolling Interest [Line Items]

Tax Cuts and Jobs Act of 2017, reclassification from AOCI to retained earnings, tax effect

$ (245,000)

Accounting Standards Update 2018-02 | Accumulated Other Comprehensive Income

Noncontrolling Interest [Line Items]

Tax Cuts and Jobs Act of 2017, reclassification from AOCI to retained earnings, tax effect

$ 245,000

401K Plan

Noncontrolling Interest [Line Items]

Maximum annual contributions per employee, percent

100.00%

Employer matching contribution, percent of match

100.00%

Employer matching contribution, percent of employees gross pay

6.00%

Employers matching contribution, annual vesting percentage

100.00%

Buildings | Minimum

Noncontrolling Interest [Line Items]

Property, plant and equipment, useful life

30 years

Buildings | Maximum

Noncontrolling Interest [Line Items]

Property, plant and equipment, useful life

40 years

Leasehold improvements | Minimum

Noncontrolling Interest [Line Items]

Property, plant and equipment, useful life

3 years

Leasehold improvements | Maximum

Noncontrolling Interest [Line Items]

Property, plant and equipment, useful life

25 years

Furniture, Fixtures and Equipment | Minimum

Noncontrolling Interest [Line Items]

Property, plant and equipment, useful life

3 years

Furniture, Fixtures and Equipment | Maximum

Noncontrolling Interest [Line Items]

Property, plant and equipment, useful life

7 years

Reliant Investment Holdings, LLC

Noncontrolling Interest [Line Items]

Ownership interest

100.00%

Reliant Mortgage Ventures, LLC

Noncontrolling Interest [Line Items]

Noncontrolling interest, ownership percentage by parent

51.00%

51.00%

Forecast | Accounting Standards Update 2016-02

Noncontrolling Interest [Line Items]

Operating lease, right-of-use asset

$ 13,583,000

Operating lease, liability

$ 13,583,000

Decrease in regulatory capital, percentage

0.08%

Adjustment | Accounting Standards Update 2016-09

Noncontrolling Interest [Line Items]

Income tax expense (benefit)

$ (478,000)

Diluted earnings per common share (in dollars per share)

$ (0.06)

Securities - Available-for-sale

Securities - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 300,594	$ 218,177
Gross Unrealized Gains	913	3,134
Gross Unrealized Losses	(5,184)	(1,110)
Estimated Fair Value	296,323	220,201
U. S. Treasury and other U. S. government agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	568	586
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(14)	(8)
Estimated Fair Value	554	578
State and municipal
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	232,589	189,576
Gross Unrealized Gains	879	3,081
Gross Unrealized Losses	(4,170)	(905)
Estimated Fair Value	229,298	191,752
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,130	1,500
Gross Unrealized Gains	0	5
Gross Unrealized Losses	(113)	(13)
Estimated Fair Value	3,017	1,492
Mortgage backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	32,172	6,262
Gross Unrealized Gains	34	3
Gross Unrealized Losses	(248)	(96)
Estimated Fair Value	31,958	6,169
Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	28,635	16,753
Gross Unrealized Gains	0	45
Gross Unrealized Losses	(639)	(88)
Estimated Fair Value	27,996	16,710
Time deposits
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,500	3,500
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 3,500	$ 3,500

Securities - Textual (Details)

Securities - Textual (Details)	12 Months Ended
	Dec. 31, 2018USD ($)security	Dec. 31, 2017USD ($)security	Dec. 31, 2016USD ($)
Investments, Debt and Equity Securities [Abstract]
Held-to-maturity securities	$ 0	$ 0
Number of securities in unrealized loss position | security	242	120
Trading securities, realized gain	$ 82,000	$ 97,000	$ 359,000
Trading securities, realized loss	39,000	38,000	$ 323,000
Securities pledged, market value	$ 70,097,000	$ 78,220,000
Number of securities of single issuer with book value greater than ten percent of stockholders' equity | security	0	0

Securities - Available-for-sa_2

Securities - Available-for-sale Securities Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Amortized Cost
Due within one year	$ 3,358
Due in one to five years	4,807
Due in five to ten years	13,576
Due after ten years	218,046
Amortized Cost	300,594	$ 218,177
Estimated Fair Value
Due within one year	3,360
Due in one to five years	4,763
Due in five to ten years	13,376
Due after ten years	214,870
Estimated Fair Value	296,323	220,201
Mortgage backed securities
Amortized Cost
Securities without a single maturity date	32,172
Amortized Cost	32,172	6,262
Estimated Fair Value
Securities without a single maturity date	31,958
Estimated Fair Value	31,958	6,169
Asset backed securities
Amortized Cost
Securities without a single maturity date	28,635
Amortized Cost	28,635	16,753
Estimated Fair Value
Securities without a single maturity date	27,996
Estimated Fair Value	$ 27,996	$ 16,710

Securities - Schedule of Tempor

Securities - Schedule of Temporary Impairment Losses, Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	$ 158,472	$ 31,368
Less than 12 months, Unrealized Loss	2,850	216
12 months or more, Estimated Fair Value	60,922	40,127
12 months or more, Unrealized Loss	2,334	894
Total, Estimated Fair Value	219,394	71,495
Total, Unrealized Loss	5,184	1,110
U. S. Treasury and other U. S. government agencies
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	0	86
Less than 12 months, Unrealized Loss	0	1
12 months or more, Estimated Fair Value	555	491
12 months or more, Unrealized Loss	14	7
Total, Estimated Fair Value	555	577
Total, Unrealized Loss	14	8
State and municipal
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	118,580	19,899
Less than 12 months, Unrealized Loss	2,263	128
12 months or more, Estimated Fair Value	47,223	34,946
12 months or more, Unrealized Loss	1,907	777
Total, Estimated Fair Value	165,803	54,845
Total, Unrealized Loss	4,170	905
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	2,526	0
Less than 12 months, Unrealized Loss	105	0
12 months or more, Estimated Fair Value	492	487
12 months or more, Unrealized Loss	8	13
Total, Estimated Fair Value	3,018	487
Total, Unrealized Loss	113	13
Mortgage backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	17,015	2,412
Less than 12 months, Unrealized Loss	99	14
12 months or more, Estimated Fair Value	5,397	3,349
12 months or more, Unrealized Loss	149	82
Total, Estimated Fair Value	22,412	5,761
Total, Unrealized Loss	248	96
Asset backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Estimated Fair Value	20,351	8,971
Less than 12 months, Unrealized Loss	383	73
12 months or more, Estimated Fair Value	7,255	854
12 months or more, Unrealized Loss	256	15
Total, Estimated Fair Value	27,606	9,825
Total, Unrealized Loss	$ 639	$ 88

Loans and Allowance for Loan _3

Loans and Allowance for Loan Losses - Schedule of Loans and Financial Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 1,231,067	$ 772,450
Deferred loan fees (costs)	(9)	231
Allowance for possible loan losses	10,892	9,731	$ 9,082	$ 7,823
Loans, net	1,220,184	762,488
Commercial Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	213,850	138,706
Allowance for possible loan losses	1,751	2,538	2,432	2,198
Residential | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Loans	225,863	111,932
Allowance for possible loan losses	1,333	773	1,178	1,214
Residential | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Loans	88,112	72,017
Allowance for possible loan losses	656	595	704	699
Residential | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Loans	447,840	261,044
Allowance for possible loan losses	4,429	3,166	2,737	2,591
Residential | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Loans	220,801	156,452
Allowance for possible loan losses	2,500	2,434	1,786	894
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	20,495	17,605
Allowance for possible loan losses	184	183	208	192
Other
Loans and Leases Receivable Disclosure [Line Items]
Loans	14,106	14,694
Allowance for possible loan losses	$ 39	$ 42	$ 37	$ 35

Loans and Allowance for Loan _4

Loans and Allowance for Loan Losses - Schedule of Allowances for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Beginning balance	$ 9,731	$ 9,082	$ 7,823
Charge-offs	(787)	(1,071)	(145)
Recoveries	913	404	436
Provision for loan losses	1,035	1,316	968
Ending balance	10,892	9,731	9,082
Commercial Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Beginning balance	2,538	2,432	2,198
Charge-offs	(381)	(976)	(84)
Recoveries	590	378	323
Provision for loan losses	(996)	704	(5)
Ending balance	1,751	2,538	2,432
Residential | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Beginning balance	3,166	2,737	2,591
Charge-offs	(76)	0	0
Recoveries	221	0	18
Provision for loan losses	1,118	429	128
Ending balance	4,429	3,166	2,737
Residential | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Beginning balance	2,434	1,786	894
Charge-offs	(215)	(45)	0
Recoveries	44	5	6
Provision for loan losses	237	688	886
Ending balance	2,500	2,434	1,786
Residential | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Beginning balance	773	1,178	1,214
Charge-offs	(36)	(14)	(25)
Recoveries	12	0	66
Provision for loan losses	584	(391)	(77)
Ending balance	1,333	773	1,178
Residential | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Beginning balance	595	704	699
Charge-offs	(6)	0	0
Recoveries	10	19	11
Provision for loan losses	57	(128)	(6)
Ending balance	656	595	704
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Beginning balance	183	208	192
Charge-offs	(26)	(36)	0
Recoveries	34	2	12
Provision for loan losses	(7)	9	4
Ending balance	184	183	208
Other
Loans and Leases Receivable Disclosure [Line Items]
Beginning balance	42	37	35
Charge-offs	(47)	0	(36)
Recoveries	2	0	0
Provision for loan losses	42	5	38
Ending balance	$ 39	$ 42	$ 37

Loans and Allowance for Loan _5

Loans and Allowance for Loan Losses - Allowance for Loan Losses and Recorded Investment by Portfolio Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Allowance for loan losses
Individually evaluated for impairment	$ 55	$ 663
Acquired with credit impairment	0	4
Collectively evaluated for impairment	10,837	9,064
Total	10,892	9,731	$ 9,082	$ 7,823
Loans
Individually evaluated for impairment	5,176	11,574
Acquired with credit impairment	2,296	2,914
Collectively evaluated for impairment	1,223,595	757,962
Total	1,231,067	772,450
Commercial Industrial and Agricultural
Allowance for loan losses
Individually evaluated for impairment	38	606
Acquired with credit impairment	0	2
Collectively evaluated for impairment	1,713	1,930
Total	1,751	2,538	2,432	2,198
Loans
Individually evaluated for impairment	978	3,649
Acquired with credit impairment	40	276
Collectively evaluated for impairment	212,832	134,781
Total	213,850	138,706
Residential | 1-4 Family HELOC
Allowance for loan losses
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	656	595
Total	656	595	704	699
Loans
Individually evaluated for impairment	0	90
Acquired with credit impairment	0	0
Collectively evaluated for impairment	88,112	71,927
Total	88,112	72,017
Residential | Multi-family and Commercial
Allowance for loan losses
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	4,429	3,166
Total	4,429	3,166	2,737	2,591
Loans
Individually evaluated for impairment	1,160	1,921
Acquired with credit impairment	232	1,157
Collectively evaluated for impairment	446,448	257,966
Total	447,840	261,044
Residential | Construction, Land Development and Farmland
Allowance for loan losses
Individually evaluated for impairment	17	57
Acquired with credit impairment	0	2
Collectively evaluated for impairment	2,483	2,375
Total	2,500	2,434	1,786	894
Loans
Individually evaluated for impairment	1,780	3,800
Acquired with credit impairment	1,751	1,436
Collectively evaluated for impairment	217,270	151,216
Total	220,801	156,452
Residential | 1-4 Family Residential
Allowance for loan losses
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	1,333	773
Total	1,333	773	1,178	1,214
Loans
Individually evaluated for impairment	1,246	2,114
Acquired with credit impairment	262	45
Collectively evaluated for impairment	224,355	109,773
Total	225,863	111,932
Consumer
Allowance for loan losses
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	184	183
Total	184	183	208	192
Loans
Individually evaluated for impairment	12	0
Acquired with credit impairment	11	0
Collectively evaluated for impairment	20,472	17,605
Total	20,495	17,605
Other
Allowance for loan losses
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	39	42
Total	39	42	$ 37	$ 35
Loans
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	14,106	14,694
Total	$ 14,106	$ 14,694

Loans and Allowance for Loan _6

Loans and Allowance for Loan Losses - Textual (Details)	12 Months Ended
	Dec. 31, 2018USD ($)contract	Dec. 31, 2017USD ($)contract	Dec. 31, 2016USD ($)contract
Loans and Leases Receivable Disclosure [Line Items]
Discount on loans purchased	$ 4,525,000	$ 272,000
Non-accrual loans	4,194,000	5,161,000
Interest income recognized on impaired loans	583,000	703,000	$ 848,000
Loans past due 90 days or more and still accruing interest	$ 6,000	$ 0
Loan modifications, number of restructured loans | contract	5
Impaired loans, troubled debt restructuring, charge off	$ 76,000
Loan modifications, number of contracts | contract	2	2	1
Subsequent defaults on loans modified in troubled debt restructurings | contract	0	0	0
Payment of loans with non-accretable purchase discounts	$ 146,000	$ 354,000	$ 708,000
Increase (decrease) in allowance for loan losses	(4,000)	(2,000)	$ (241,000)
Partial charge-off and payment restructure
Loans and Leases Receivable Disclosure [Line Items]
Impaired loans, troubled debt restructuring, charge off		470,000
Loan modifications, recorded investment		308,000
Payment deferral
Loans and Leases Receivable Disclosure [Line Items]
Loan modifications, recorded investment		108,000
Performing Financial Instruments
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 2,010,000	1,096,000
Residential | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Percentage of loans secured by owner occupied properties	27.00%
Non-accrual loans	$ 0	0
Loan modifications, number of contracts | contract	1
Residential | Multi-family and Commercial | Minimum
Loans and Leases Receivable Disclosure [Line Items]
Percentage of loans in repayment	50.00%
Residential | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 2,556,000	533,000
Loan modifications, number of contracts | contract	1		1
Proceeds from collection of finance receivable	$ 1,254,000
Residential | 1-4 Family Residential | Minimum
Loans and Leases Receivable Disclosure [Line Items]
Loan facility, amortization period	15 years
Loans commitment, maturity period	5 years
Residential | 1-4 Family Residential | Maximum
Loans and Leases Receivable Disclosure [Line Items]
Loan facility, amortization period	30 years
Loans commitment, maturity period	15 years
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 65,000	$ 0
Consumer | Minimum
Loans and Leases Receivable Disclosure [Line Items]
Repayment period	1 year
Consumer | Maximum
Loans and Leases Receivable Disclosure [Line Items]
Repayment period	5 years

Loans and Allowance for Loan _7

Loans and Allowance for Loan Losses - Summary of Non-accrual Loans by Class of Loan (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 4,194	$ 5,161
Commercial Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	279	2,110
Residential | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	0	0
Residential | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	1,294	2,518
Residential | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	2,556	533
Residential | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	0	0
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 65	$ 0

Loans and Allowance for Loan _8

Loans and Allowance for Loan Losses - Summary of Individually Impaired Loans by Class of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	$ 9,109	$ 16,089	$ 20,670
Recorded Investment with no Allowance Recorded	7,047	11,535	13,905
Recorded Investment with Allowance Recorded	425	2,953	4,269
Total Recorded Investment	7,472	14,488	18,174
Related Allowance	55	667	859
Commercial Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	1,247	4,398	6,383
Recorded Investment with no Allowance Recorded	765	2,959	3,924
Recorded Investment with Allowance Recorded	253	966	1,780
Total Recorded Investment	1,018	3,925	5,704
Related Allowance	38	608	747
Residential | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	1,670	3,427	5,666
Recorded Investment with no Allowance Recorded	1,392	3,078	2,914
Recorded Investment with Allowance Recorded	0	0	1,974
Total Recorded Investment	1,392	3,078	4,888
Related Allowance	0	0	6
Residential | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	3,920	5,317	4,124
Recorded Investment with no Allowance Recorded	3,359	3,249	3,854
Recorded Investment with Allowance Recorded	172	1,987	171
Total Recorded Investment	3,531	5,236	4,025
Related Allowance	17	59	17
Residential | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	2,243	2,857	2,422
Recorded Investment with no Allowance Recorded	1,508	2,159	2,035
Recorded Investment with Allowance Recorded	0	0	27
Total Recorded Investment	1,508	2,159	2,062
Related Allowance	0	0	27
Residential | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	0	90	2,075
Recorded Investment with no Allowance Recorded	0	90	1,178
Recorded Investment with Allowance Recorded	0	0	317
Total Recorded Investment	0	90	1,495
Related Allowance	0	$ 0	$ 62
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	29
Recorded Investment with no Allowance Recorded	23
Recorded Investment with Allowance Recorded	0
Total Recorded Investment	23
Related Allowance	$ 0

Loans and Allowance for Loan _9

Loans and Allowance for Loan Losses - Summary of Average Recorded Investment in Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Average recorded investment in impaired loans	$ 11,872	$ 16,861	$ 19,704
Commercial Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Average recorded investment in impaired loans	2,333	5,225	6,055
Residential | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Average recorded investment in impaired loans	2,366	4,138	5,837
Residential | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Average recorded investment in impaired loans	4,571	4,502	3,243
Residential | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Average recorded investment in impaired loans	2,468	2,212	2,715
Residential | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Average recorded investment in impaired loans	72	784	1,854
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Average recorded investment in impaired loans	$ 62	$ 0	$ 0

Loans and Allowance for Loan_10

Loans and Allowance for Loan Losses - Summary of Credit Quality Indicators by Class of Loan (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 1,231,067	$ 772,450
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	1,216,941	757,494
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	4,839	4,395
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	9,287	10,561
Commercial Industrial and Agricultural
Financing Receivable, Recorded Investment [Line Items]
Loans	213,850	138,706
Commercial Industrial and Agricultural | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	212,761	135,833
Commercial Industrial and Agricultural | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	0	5
Commercial Industrial and Agricultural | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	1,089	2,868
Residential | 1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Loans	225,863	111,932
Residential | 1-4 Family Residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	221,546	108,426
Residential | 1-4 Family Residential | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	1,125	1,392
Residential | 1-4 Family Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	3,192	2,114
Residential | 1-4 Family HELOC
Financing Receivable, Recorded Investment [Line Items]
Loans	88,112	72,017
Residential | 1-4 Family HELOC | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	88,112	71,927
Residential | 1-4 Family HELOC | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Residential | 1-4 Family HELOC | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	0	90
Residential | Multi-family and Commercial
Financing Receivable, Recorded Investment [Line Items]
Loans	447,840	261,044
Residential | Multi-family and Commercial | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	442,127	259,123
Residential | Multi-family and Commercial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	3,135	0
Residential | Multi-family and Commercial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	2,578	1,921
Residential | Construction, Land Development and Farmland
Financing Receivable, Recorded Investment [Line Items]
Loans	220,801	156,452
Residential | Construction, Land Development and Farmland | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	218,053	149,886
Residential | Construction, Land Development and Farmland | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	579	2,998
Residential | Construction, Land Development and Farmland | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	2,169	3,568
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans	20,495	17,605
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	20,236	17,605
Consumer | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	259	0
Other
Financing Receivable, Recorded Investment [Line Items]
Loans	14,106	14,694
Other | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	14,106	14,694
Other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 0	$ 0

Loans and Allowance for Loan_11

Loans and Allowance for Loan Losses - Summary of Past Due (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 3,722	$ 6,229
Current	1,227,345	766,221
Total	1,231,067	772,450
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,401	2,157
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	622	451
90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,699	3,621
Commercial Industrial and Agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	454	1,555
Current	213,396	137,151
Total	213,850	138,706
Commercial Industrial and Agricultural | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	22	7
Commercial Industrial and Agricultural | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	153	0
Commercial Industrial and Agricultural | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	279	1,548
Residential | 1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,642	617
Current	223,221	111,315
Total	225,863	111,932
Residential | 1-4 Family Residential | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,104	617
Residential | 1-4 Family Residential | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	335	0
Residential | 1-4 Family Residential | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,203	0
Residential | 1-4 Family HELOC
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	50	7
Current	88,062	72,010
Total	88,112	72,017
Residential | 1-4 Family HELOC | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	50	0
Residential | 1-4 Family HELOC | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	7
Residential | 1-4 Family HELOC | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential | Multi-family and Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	104	1,254
Current	447,736	259,790
Total	447,840	261,044
Residential | Multi-family and Commercial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	1,254
Residential | Multi-family and Commercial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	104	0
Residential | Multi-family and Commercial | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential | Construction, Land Development and Farmland
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	385	2,782
Current	220,416	153,670
Total	220,801	156,452
Residential | Construction, Land Development and Farmland | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	214	265
Residential | Construction, Land Development and Farmland | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	444
Residential | Construction, Land Development and Farmland | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	171	2,073
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	87	14
Current	20,408	17,591
Total	20,495	17,605
Consumer | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	11	14
Consumer | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	30	0
Consumer | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	46	0
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Current	14,106	14,694
Total	14,106	14,694
Other | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Other | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Other | 90 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 0	$ 0

Loans and Allowance for Loan_12

Loans and Allowance for Loan Losses - Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)contract	Dec. 31, 2017USD ($)contract	Dec. 31, 2016USD ($)contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	2	2	1
Pre-Modification Oustanding Recorded Investments	$ 1,915	$ 2,110	$ 1,712
Post-Modification Oustanding Recorded Investments	$ 1,839	$ 1,640	$ 1,712
Residential | 1-4 Family Residential
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1		1
Pre-Modification Oustanding Recorded Investments	$ 1,254		$ 1,712
Post-Modification Oustanding Recorded Investments	$ 1,254		$ 1,712
Residential | Multi-family and Commercial
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract	1
Pre-Modification Oustanding Recorded Investments	$ 661
Post-Modification Oustanding Recorded Investments	$ 585
Residential | Construction, Land Development and Farmland
Financing Receivable, Modifications [Line Items]
Number of Contracts | contract		2
Pre-Modification Oustanding Recorded Investments		$ 2,110
Post-Modification Oustanding Recorded Investments		$ 1,640

Loans and Allowance for Loan_13

Loans and Allowance for Loan Losses - Summary of Carrying Amount of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	$ 2,596	$ 3,070
Less remaining purchase discount	300	156
Allowance for loan losses	0	4
Carrying amount, net of allowance	2,296	2,910
Commercial Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	63	298
Residential | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	233	1,217
Residential | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	1,958	1,508
Residential | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	324	47
Residential | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	0	0
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	$ 18	$ 0

Loans and Allowance for Loan_14

Loans and Allowance for Loan Losses - Activity Related to Accretable Portion of Loans Acquired (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance	$ 0	$ 87	$ 233
New loans purchased	260	0	0
Loan charge offs	(104)	0	0
Accretion income	(46)	(87)	(146)
Balance	$ 110	$ 0	$ 87

Loans and Allowance for Loan_15

Loans and Allowance for Loan Losses - Loans to Related Parties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable, Related Parties [Roll Forward]
Balance - January 1	$ 8,581	$ 11,935	$ 10,484
New loans during the year	919	4,356	4,442
Repayments during the year	(2,106)	(7,710)	(2,991)
Balance - December 31	$ 7,394	$ 8,581	$ 11,935

Other Real Estate - Other Real

Other Real Estate - Other Real Estate Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Real Estate [Roll Forward]
Beginning balance	$ 0	$ 0	$ 1,149
Loans acquired in merger	1,650	0	0
Loans transferred to other real estate	1,060	0	0
Allowance to lower of cost or market	0	0	(70)
Sales of other real estate	(1,710)	0	(1,079)
End of year	$ 1,000	$ 0	$ 0

Other Real Estate - Activity in

Other Real Estate - Activity in the Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Real Estate Owned Valuation Allowance [Roll Forward]
Beginning balance	$ 0	$ 0	$ 0
Provisions/(recoveries) charged/(credited) to expense	0	0	70
Reductions from sales of other real estate	0	0	(70)
Direct write-downs	0	0	0
End of year	$ 0	$ 0	$ 0

Other Real Estate - Expenses Re

Other Real Estate - Expenses Related to Foreclosed Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Net gain on sales	$ (259)	$ (27)	$ (301)
Provision for unrealized losses	0	0	70
Operating expenses, net of rental income	50	7	22
Total	$ (209)	$ (20)	$ (209)

Other Real Estate - Textual (De

Other Real Estate - Textual (Details) $ in Thousands	Jan. 01, 2018USD ($)parcel	Dec. 31, 2018USD ($)
Business Acquisition [Line Items]
Mortgage loans in process of foreclosure		$ 1,048
Community First
Business Acquisition [Line Items]
Real estate parcels acquired | parcel	3
Other real estate owned	$ (1,650)

Fair Values of Assets and Lia_3

Fair Values of Assets and Liabilities - Schedule of Fair Value of Assets and Liabilities Measured on Recurring and Non-recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Recurring | Interest Rate Swap | Derivative liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	$ 1,183	$ 180
Recurring | U. S. Treasury and other U. S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	554	578
Recurring | State and municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	229,298	191,752
Recurring | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,017	1,492
Recurring | Mortgage backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	31,958	6,169
Recurring | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	27,996	16,710
Recurring | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,500	3,500
Recurring | Derivative asset | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	467	155
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest Rate Swap | Derivative liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U. S. Treasury and other U. S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | State and municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,500	3,500
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Derivative asset | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Significant Other Observable Inputs (Level 2) | Interest Rate Swap | Derivative liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	1,183	180
Recurring | Significant Other Observable Inputs (Level 2) | U. S. Treasury and other U. S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	554	578
Recurring | Significant Other Observable Inputs (Level 2) | State and municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	229,298	191,752
Recurring | Significant Other Observable Inputs (Level 2) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,017	1,492
Recurring | Significant Other Observable Inputs (Level 2) | Mortgage backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	31,958	6,169
Recurring | Significant Other Observable Inputs (Level 2) | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	27,996	16,710
Recurring | Significant Other Observable Inputs (Level 2) | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Significant Other Observable Inputs (Level 2) | Derivative asset | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	467	155
Recurring | Significant Unobservable Inputs (Level 3) | Interest Rate Swap | Derivative liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	0	0
Recurring | Significant Unobservable Inputs (Level 3) | U. S. Treasury and other U. S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Significant Unobservable Inputs (Level 3) | State and municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Mortgage backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Derivative asset | Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	0	0
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	370	2,286
Other real estate owned	1,000
Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Other real estate owned	0
Nonrecurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Other real estate owned	0
Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	370	$ 2,286
Other real estate owned	$ 1,000

Fair Values of Assets and Lia_4

Fair Values of Assets and Liabilities - Summary of Quantitative Information of Assets Measured at Fair Value on Nonrecurring Basis by Utilized Level 3 Inputs (Details) - Nonrecurring - Significant Unobservable Inputs (Level 3)	12 Months Ended
	Dec. 31, 2018
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation Techniques	Appraisal
Significant Unobservable Inputs	Estimated costs to sell
Range (Weighted Average)	10.00%
Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation Techniques	Appraisal
Significant Unobservable Inputs	Estimated costs to sell
Range (Weighted Average)	10.00%

Fair Values of Assets and Lia_5

Fair Values of Assets and Liabilities - Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Carrying Amount
Financial assets
Cash and due from banks	$ 34,807	$ 20,497
Federal funds sold	371	171
Loans, net	1,220,184	762,488
Mortgage loans held for sale	15,823	45,322
Accrued interest receivable	8,214	5,744
Restricted equity securities	11,690	7,774
Financial liabilities
Deposits	1,437,903	883,519
Accrued interest payable	1,063	305
Subordinate debentures	11,603
Federal Home Loan Bank advances	57,498	96,747
Estimated Fair Value
Financial assets
Cash and due from banks	34,807	20,497
Federal funds sold	371	171
Loans, net	1,206,574	762,574
Mortgage loans held for sale	15,871	46,467
Accrued interest receivable	8,214	5,744
Restricted equity securities	11,690	7,774
Financial liabilities
Deposits	1,434,652	882,533
Accrued interest payable	1,063	305
Subordinate debentures	11,522
Federal Home Loan Bank advances	57,434	96,754
Estimated Fair Value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets
Cash and due from banks	34,807	20,497
Federal funds sold	0	0
Loans, net	0	0
Mortgage loans held for sale	0	0
Accrued interest receivable	0	0
Restricted equity securities	0	0
Financial liabilities
Deposits	0	0
Accrued interest payable	0	0
Subordinate debentures	0
Federal Home Loan Bank advances	0	0
Estimated Fair Value | Significant Other Observable Inputs (Level 2)
Financial assets
Cash and due from banks	0	0
Federal funds sold	371	171
Loans, net	0	0
Mortgage loans held for sale	15,871	46,467
Accrued interest receivable	8,214	5,744
Restricted equity securities	11,690	7,774
Financial liabilities
Deposits	0	0
Accrued interest payable	1,063	305
Subordinate debentures	0
Federal Home Loan Bank advances	0	0
Estimated Fair Value | Significant Unobservable Inputs (Level 3)
Financial assets
Cash and due from banks	0	0
Federal funds sold	0	0
Loans, net	1,206,574	762,574
Mortgage loans held for sale	0	0
Accrued interest receivable	0	0
Restricted equity securities	0	0
Financial liabilities
Deposits	1,434,652	882,533
Accrued interest payable	0	0
Subordinate debentures	11,522
Federal Home Loan Bank advances	$ 57,434	$ 96,754

Premises and Equipment - Summar

Premises and Equipment - Summary of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 32,862	$ 19,084
Less: accumulated depreciation	(10,829)	(9,294)
Premises and equipment, net	22,033	9,790
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	6,049	1,211
Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	8,951	4,717
Construction in progress
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	0	284
Leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	7,551	4,727
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 10,311	$ 8,145

Premises and Equipment - Textua

Premises and Equipment - Textual (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Depreciation and amortization of premises and equipment	$ 1,697	$ 1,017	$ 976

Restricted Equity Securities -

Restricted Equity Securities - Summary of Restricted Equity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Federal Reserve Bank	$ 5,735	$ 3,546
Federal Home Loan Bank	5,955	4,228
Total	$ 11,690	$ 7,774

Goodwill and Core Deposit Int_3

Goodwill and Core Deposit Intangibles - Intangible Assets Acquired in Business Acquisitions (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 43,642	$ 11,404
Amortized intangible assets:
Core deposit intangibles	10,111	2,946
Less accumulated amortization	(1,892)	(1,666)
Total	$ 8,219	$ 1,280

Goodwill and Core Deposit Int_4

Goodwill and Core Deposit Intangibles - Textual (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of core deposit intangible	$ 949	$ 302	$ 356

Goodwill and Core Deposit Int_5

Goodwill and Core Deposit Intangibles - Estimated Future Amortization Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
2,019	$ 949
2,020	949
2,021	949
2,022	949
2,023	865
Thereafter	3,558
Total	$ 8,219	$ 1,280

Deposits - Contractual Maturiti

Deposits - Contractual Maturities of Time Deposit Accounts (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
2,019	$ 588,815
2,020	49,259
2,021	9,934
2,022	8,174
2,023	9,258
Total	$ 665,440	$ 458,063

Deposits - Textual (Details)

Deposits - Textual (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Aggregate amount of overdrafts reclassified as receivable	$ 400	$ 118
Time deposits above FDIC Insurance limit	330,736	264,814
Deposits from related parties	$ 8,376	$ 14,280

Federal Home Loan Bank Advanc_3

Federal Home Loan Bank Advances - Summary of Advances from FHLB (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances [Line Items]
Maturities January 2019 through March 2024, fixed rates ranging from 1.22% to 2.86% ($54,000 is due in the year ending December 31, 2019)	$ 57,498	$ 96,747
FHLB advances due in 2019	$ 53,857
Minimum
Federal Home Loan Bank, Advances [Line Items]
Federal Home Loan Bank, advances, interest rate	1.22%
Maximum
Federal Home Loan Bank, Advances [Line Items]
Federal Home Loan Bank, advances, interest rate	2.86%

Federal Home Loan Bank Advanc_4

Federal Home Loan Bank Advances - Textual (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, advances, amortized on a monthly basis	$ 4,407
Federal Home Loan Bank, advances, collateral pledged	597,646	$ 380,111
Federal Home Loan Bank, advances, additional borrowing capacity	$ 96,082	$ 5,924
Weighted Average
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal Home Loan Bank, advances, interest rate	2.42%	1.54%
Federal Home Loan Bank, advances, short-term borrowings interest rate	2.46%	1.43%

Federal Home Loan Bank Advanc_5

Federal Home Loan Bank Advances - Future Principle Payments on Federal Home Loan Bank Borrowings (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Federal Home Loan Banks [Abstract]
2,019	$ 53,857
2,020	721
2,021	963
2,022	612
2,023	1,117
Thereafter	228
Total	$ 57,498	$ 96,747

Subordinated Debentures (Detail

Subordinated Debentures (Details) - Community First, Inc	12 Months Ended		71 Months Ended	73 Months Ended
	Dec. 31, 2005USD ($)quarterly_periods	Dec. 31, 2002USD ($)quarterly_periods	Dec. 15, 2012	Dec. 31, 2018	Oct. 20, 2016USD ($)	Dec. 31, 2007USD ($)quarterly_periods
Subordinated Debentures Subject to Mandatory Redemption
Subordinated Borrowing [Line Items]
Debt instrument, face amount	$ 5,000,000	$ 3,000,000
Subordinated borrowing, interest rate	4.288%	6.00%	7.96%	5.788%
Redeemable Subordinated Debentures
Subordinated Borrowing [Line Items]
Debt instrument, face amount						$ 15,000,000
Trust Preferred Capital Securities
Subordinated Borrowing [Line Items]
Debt instrument, repurchased face amount					$ 10,000,000
Prime Rate | Subordinated Debentures Subject to Mandatory Redemption
Subordinated Borrowing [Line Items]
Debt instrument, basis spread on variable rate		0.50%
LIBOR | Subordinated Debentures Subject to Mandatory Redemption
Subordinated Borrowing [Line Items]
Debt instrument, basis spread on variable rate	1.50%
Deferral of interest payments, number of quarterly periods | quarterly_periods	20	20				20
LIBOR | Redeemable Subordinated Debentures
Subordinated Borrowing [Line Items]
Debt instrument, basis spread on variable rate				3.00%

Benefit Plans (Details)

Benefit Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Employee Stock Purchase Plan
Defined Contribution Plan Disclosure [Line Items]
Purchase price of common stock, percent	85.00%
Number of shares authorized (in shares)	200,000
Maximum number of shares per employee (in shares)	2,500
Maximum employee subscription amount	$ 25,000
Common stock issued under the ESPP (in shares)	0
Number of shares available for issuance under the ESPP (in shares)	200,000
401K Plan
Defined Contribution Plan Disclosure [Line Items]
Maximum annual contributions per employee, percent	100.00%
Employer matching contribution, percent of match	100.00%
Employer matching contribution, percent of employees gross pay	6.00%
Defined contribution plan, cost	$ 805,000	$ 450,000	$ 467,000

Income Taxes - Textual (Details

Income Taxes - Textual (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Tax Reform Act, income tax expense	$ 620
Federal
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Operating loss carryforwards	14,126
Operating loss carryforwards, limitations on use, annual amount	$ 1,215

Income Taxes - Income Tax Expen

Income Taxes - Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income tax expense
Current	$ 992	$ 1,438	$ 1,978
Deferred	380	504	235
Total provision for income tax expense	$ 1,372	$ 1,942	$ 2,213

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of the Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Computed “expected” tax expense, amount	$ 2,495	$ 2,756	$ 3,437
Federal income tax rate change	0	620	0
State tax expense, net of federal tax effect, amount	551	331	404
Tax exempt interest, amount	(1,422)	(1,452)	(923)
Disallowed interest expense, amount	290	193	56
Incentive stock options, amount	19	33	22
Cash surrender value of life insurance contracts, amount	(249)	(285)	(255)
Officers life insurance expense, amount	0	0	7
Excess tax benefit from stock compensation, amount	(88)	(184)	(478)
Nondeductible merger expenses, amount	12	173	0
Federal and state tax credits, amount	(1,102)	(667)	(499)
Benefit of subsidiary net loss, amount	0	0	0
Subsidiary disregarded for federal taxes, amount	763	347	378
Others as a group	103	77	64
Total provision for income tax expense	$ 1,372	$ 1,942	$ 2,213
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Computed “expected” tax expense	21.00%	34.00%	34.00%
Federal income tax rate change, rate	0.00%	8.00%	0.00%
State tax expense, net of federal tax effect	5.00%	4.00%	4.00%
Tax exempt interest, rate	(12.00%)	(18.00%)	(9.00%)
Disallowed interest expense, rate	2.00%	2.00%	1.00%
Incentive stock options, rate	0.00%	0.00%	0.00%
Cash surrender value of life insurance contracts, rate	(2.00%)	(4.00%)	(3.00%)
Officers life insurance expense, rate	0.00%	0.00%	0.00%
Excess tax benefit from stock compensation, rate	(1.00%)	(2.00%)	(5.00%)
Nondeductible merger expenses, rate	0.00%	2.00%	0.00%
Federal and state tax credits, rate	(9.00%)	(8.00%)	(5.00%)
Benefit of subsidiary net loss, rate	(0.00%)	(0.00%)	(0.00%)
Subsidiary disregarded for federal taxes, rate	6.00%	4.00%	4.00%
Others as a group, rate	1.00%	1.00%	1.00%
Total income tax expense, rate	11.00%	23.00%	22.00%

Income Taxes - Significant Comp

Income Taxes - Significant Components of Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Organizational and start-up costs	$ 68	$ 98
Core deposit intangible	(2,046)	(215)
Acquisition fair value adjustments	817	30
Allowance for loan losses	2,577	1,876
Loan fees (costs)	(1)	60
Other real estate	577	0
Premises and equipment	(791)	(427)
Unrealized loss on available for sale securities	1,115
Unrealized (gain) on available for sale securities		(528)
Unrealized loss on derivatives	187	7
Non-accrual loans	280	170
Acquired net operating losses	2,966	0
Acquired tax credits net of basis adjustments	1,005	0
Deferred compensation	443	0
Other	231	28
Total	7,428	1,099
State	688	114
Federal	$ 6,740	$ 985

Stock-based Compensation - Text

Stock-based Compensation - Textual (Details) - USD ($) $ / shares in Units, $ in Thousands	Mar. 10, 2015	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jun. 18, 2015	Dec. 31, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation cost		$ 923	$ 616	$ 251
Tax benefit realized from option exercises		$ 88	$ 184	$ 478
Forfeiture rate		3.00%
Unrecognized compensation cost, weighted-average period for recognition		2 years 4 months 13 days
Estimated fair value per option (in dollars per share)		$ 6.89	$ 6.46
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, weighted-average period for recognition		1 year 7 months 2 days
Market value of shares issued (in dollars per share)		$ 25.14	$ 23.65	$ 15.24
Unrecognized compensation cost, restricted stock		$ 1,704
Fair value of share awards vested		$ 439	$ 368	$ 60
Restricted Stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Restricted Stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
The Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost		$ 310
The Plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	1,250,000					625,000
Expiration period	10 years
Equity Incentive Plan 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)					900,000

Stock-based Compensation - Stoc

Stock-based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Shares
Outstanding (in shares)	170,761	241,541	708,921
Granted (in shares)	25,500	15,500	41,500
Exercised (in shares)	(30,001)	(72,080)	(476,889)
Forfeited or expired (in shares)	(7,000)	(14,200)	(31,991)
Outstanding (in shares)	159,260	170,761	241,541
Exercisable (in shares)	88,060	95,861	144,941
Vested and anticipated vesting shares (in shares)	157,124	168,514	238,643
Weighted Average Exercise Price
Outstanding (in dollars per share)	$ 14.48	$ 12.96	$ 10.73
Granted (in dollars per share)	28	23.55	15.57
Exercised (in dollars per share)	13.27	11.42	10.03
Forfeited or expired (in dollars per share)	18.20	14.06	10.61
Outstanding (in dollars per share)	16.72	14.48	12.96
Exercisable (in dollars per share)	13.45	13	12.11
Vested and anticipated vesting shares (in dollars per share)	$ 16.67	$ 14.45	$ 12.89
Stock Option Activity, Additional Information
Outstanding, Weighted Average Remaining Contractual Term	6 years 15 days	5 years 8 months 23 days	5 years 4 months 28 days
Exercisable, Weighted Average Remaining Contractual Term	4 years 3 months 26 days	3 years 9 months	3 years 3 months
Vested and anticipated vesting shares, Weighted Average Remaining Contractual Term	6 years 4 days	5 years 8 months 23 days	5 years 4 months 28 days
Granted, Weighted Average Remaining Contractual Term	9 years 6 months 29 days
Exercised, Weighted Average Remaining Contractual Term	3 years 7 months 17 days
Forfeited or expired, Weighted Average Remaining Contractual Term	8 years 4 months 24 days
Outstanding, Aggregate Intrinsic Value	$ 1,146	$ 1,905	$ 2,065
Exercisable, Aggregate Intrinsic Value	847	1,212	1,363
Vested and anticipated vesting shares, Aggregate Intrinsic Value	$ 1,002	$ 1,848	$ 2,003

Stock-based Compensation - Nonv

Stock-based Compensation - Nonvested Stock Option Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Shares
Non-vested options (in shares)	74,900	96,600	84,160
Granted (in shares)	25,500	15,500	41,500
Vested (in shares)	(22,200)	(23,000)	(24,260)
Forfeited (in shares)	(7,000)	(14,200)	(4,800)
Non-vested options (in shares)	71,200	74,900	96,600
Weighted Average Grant-Date Fair Value
Non-vested options (in dollars per share)	$ 4.14	$ 3.36	$ 2.90
Granted (in dollars per share)	7.10	6.66	3.89
Vested (in dollars per share)	6.69	6.95	2.76
Forfeited (in dollars per share)	4.77	3.18	2.92
Non-vested options (in dollars per share)	$ 5.28	$ 4.14	$ 3.36

Stock-based Compensation - St_2

Stock-based Compensation - Stock Option Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Intrinsic value of options exercised	$ 344	$ 827	$ 2,272
Cash received from option exercises	398	823	4,772
Tax benefit realized from option exercises	$ 88	$ 184	$ 478
Weighted average fair value of options granted (in dollars per share)	$ 7.10	$ 6.66	$ 3.89

Stock-based Compensation - Weig

Stock-based Compensation - Weighted Average Fair Value Assumptions (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.95%
Risk-free interest rate, minimum		2.30%	1.33%
Risk-free interest rate, maximum,		2.45%	2.45%
Expected term (in years)	6 years 6 months	6 years 6 months
Expected stock price volatility	23.50%
Expected stock price volatility, minimum		24.00%	21.00%
Expected stock price volatility, maximum		29.90%	24.00%
Dividend yield	1.14%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)			6 years 6 months
Dividend yield		0.98%	1.02%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)			10 years
Dividend yield		1.02%	1.57%

Stock-based Compensation - Acti

Stock-based Compensation - Activity Related to Restricted Stock (Details) - Restricted Stock - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Shares
Non-vested shares (in shares)	82,499	48,465	30,500
Granted (in shares)	51,710	50,050	23,800
Vested (in shares)	(21,999)	(13,016)	(3,835)
Forfeited (in shares)	(1,550)	(3,000)	(2,000)
Non-vested shares (in shares)	110,660	82,499	48,465
Weighted Average Grant-Date Fair Value
Non-vested shares (in dollars per share)	$ 20.03	$ 14.36	$ 13.65
Granted (in dollars per share)	27.55	23.65	15.24
Vested (in dollars per share)	15.95	14.21	14.54
Forfeited (in dollars per share)	25.17	14.18	13.65
Non-vested shares (in dollars per share)	$ 24.28	$ 20.03	$ 14.36

Capital - Summary of Bank's Act

Capital - Summary of Bank's Actual Capital Amounts and Ratios (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier I leverage	$ 168,876	$ 126,234
Tier I leverage, ratio	10.38%	11.89%
Tier I leverage, minimal capital adequacy	$ 65,077	$ 42,467
Tier I leverage, minimal capital adequacy, ratio	4.00%	4.00%
Tier I leverage, minimum required capital including capital conservation buffer	$ 65,077	$ 42,467
Tier I leverage, minimum required capital including capital conservation buffer, ratio	4.00%	4.00%
Tier I leverage, to be well capitalized under prompt corrective action provisions	$ 81,347	$ 53,084
Tier I leverage, to be well capitalized under prompt corrective action provisions, ratio	5.00%	5.00%
Common equity tier 1	$ 157,273	$ 126,234
Common equity tier 1, ratio	11.59%	13.90%
Common equity tier 1, minimal capital adequacy	$ 61,064	$ 40,867
Common equity tier 1, minimal capital adequacy, ratio	4.50%	4.50%
Common equity tier 1, minimum required capital including capital conservation buffer	$ 86,507	$ 52,219
Common equity tier 1, minimum required capital including capital conservation buffer, ratio	6.375%	5.75%
Common equity tier 1, to be well capitalized under prompt corrective action provisions	$ 88,203	$ 59,030
Common equity tier 1, to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
Tier I risk-based capital	$ 168,876	$ 126,234
Tier I risk-based capital, ratio	12.44%	13.90%
Tier I risk-based capital, minimal capital adequacy	$ 81,451	$ 54,489
Tier I risk-based capital, minimal capital adequacy, ratio	6.00%	6.00%
Tier I risk-based capital, minimum required capital including capital conservation buffer	$ 106,905	$ 65,841
Tier I risk-based capital, minimum required capital including capital conservation buffer, ratio	7.875%	7.25%
Tier I risk-based capital, to be well capitalized under prompt corrective action provisions	$ 108,602	$ 72,653
Tier I risk-based capital, to be well capitalized under prompt corrective action provisions, ratio	8.00%	8.00%
Total risk-based capital	$ 180,193	$ 135,965
Total risk-based capital, ratio	13.28%	14.97%
Total risk-based capital, minimal capital adequacy	$ 108,550	$ 72,660
Total risk-based capital, minimal capital adequacy, ratio	8.00%	8.00%
Total risk-based capital, minimum required capital including capital conservation buffer	$ 133,991	$ 84,013
Total risk-based capital, minimum required capital including capital conservation buffer, ratio	9.875%	9.25%
Total risk-based capital, to be well capitalized under prompt corrective action provisions	$ 135,688	$ 90,825
Total risk-based capital, to be well capitalized under prompt corrective action provisions, ratio	10.00%	10.00%
Reliant Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier I leverage	$ 165,308	$ 123,862
Tier I leverage, ratio	10.17%	11.68%
Tier I leverage, minimal capital adequacy	$ 65,018	$ 42,418
Tier I leverage, minimal capital adequacy, ratio	4.00%	4.00%
Tier I leverage, minimum required capital including capital conservation buffer	$ 65,018	$ 42,418
Tier I leverage, minimum required capital including capital conservation buffer, ratio	4.00%	4.00%
Tier I leverage, to be well capitalized under prompt corrective action provisions	$ 81,272	$ 53,023
Tier I leverage, to be well capitalized under prompt corrective action provisions, ratio	5.00%	5.00%
Common equity tier 1	$ 165,308	$ 123,862
Common equity tier 1, ratio	12.19%	13.67%
Common equity tier 1, minimal capital adequacy	$ 61,024	$ 40,774
Common equity tier 1, minimal capital adequacy, ratio	4.50%	4.50%
Common equity tier 1, minimum required capital including capital conservation buffer	$ 86,451	$ 52,100
Common equity tier 1, minimum required capital including capital conservation buffer, ratio	6.375%	5.75%
Common equity tier 1, to be well capitalized under prompt corrective action provisions	$ 88,146	$ 58,896
Common equity tier 1, to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
Tier I risk-based capital	$ 165,308	$ 123,862
Tier I risk-based capital, ratio	12.19%	13.67%
Tier I risk-based capital, minimal capital adequacy	$ 81,366	$ 54,365
Tier I risk-based capital, minimal capital adequacy, ratio	6.00%	6.00%
Tier I risk-based capital, minimum required capital including capital conservation buffer	$ 106,792	$ 65,691
Tier I risk-based capital, minimum required capital including capital conservation buffer, ratio	7.875%	7.25%
Tier I risk-based capital, to be well capitalized under prompt corrective action provisions	$ 108,488	$ 72,487
Tier I risk-based capital, to be well capitalized under prompt corrective action provisions, ratio	8.00%	8.00%
Total risk-based capital	$ 176,625	$ 133,593
Total risk-based capital, ratio	13.02%	14.74%
Total risk-based capital, minimal capital adequacy	$ 108,525	$ 72,506
Total risk-based capital, minimal capital adequacy, ratio	8.00%	8.00%
Total risk-based capital, minimum required capital including capital conservation buffer	$ 133,961	$ 83,835
Total risk-based capital, minimum required capital including capital conservation buffer, ratio	9.875%	9.25%
Total risk-based capital, to be well capitalized under prompt corrective action provisions	$ 135,657	$ 90,633
Total risk-based capital, to be well capitalized under prompt corrective action provisions, ratio	10.00%	10.00%

Capital - Textual (Details)

Capital - Textual (Details) - USD ($)	Dec. 31, 2018	Dec. 04, 2018	Dec. 31, 2017
Banking and Thrift [Abstract]
Stock repurchase program, authorized amount		$ 12,000,000
Common stock, par value (in dollars per share)	$ 1	$ 1	$ 1

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Loss Contingencies [Line Items]
Federal reserve bank discount window borrowings	$ 11,166,000	$ 12,900,000
Federal reserve bank advances	0	0
Federal Fund Lines of Credit
Loss Contingencies [Line Items]
Line of credit facility, remaining borrowing capacity	78,200,000	78,200,000
Long-term line of credit	0	0
Unsecured Line of Credit
Loss Contingencies [Line Items]
Line of credit facility, remaining borrowing capacity	20,000,000
Long-term line of credit	0	2,000,000
Standby letters of credit | Federal Home Loan Bank Borrowings
Loss Contingencies [Line Items]
Long-term line of credit	$ 310,454,000	$ 208,829,000

Leases - Summary of Company's L

Leases - Summary of Company's Leased Facilities (Details)	12 Months Ended
	Dec. 31, 2018
1736 Carothers Parkway, Brentwood
Property Subject to or Available for Operating Lease [Line Items]
Base Lease Term With Renewal Periods (Year)	15 years
Escalation Clause	3.00%
6005 Nolensville Road, Nashville
Property Subject to or Available for Operating Lease [Line Items]
Base Lease Term With Renewal Periods (Year)	0 years
Escalation Clause	3.00%
5109 Peter Taylor Park Drive, Brentwood
Property Subject to or Available for Operating Lease [Line Items]
Base Lease Term With Renewal Periods (Year)	10 years
Escalation Clause	3.00%
101 Creekstone Boulevard, Franklin
Property Subject to or Available for Operating Lease [Line Items]
Base Lease Term With Renewal Periods (Year)	10 years
Escalation Clause	2.00%
105 Continental Place, Brentwood
Property Subject to or Available for Operating Lease [Line Items]
Base Lease Term With Renewal Periods (Year)	0 years
Escalation Clause	3.00%
633 Chestnut St., Chattanooga
Property Subject to or Available for Operating Lease [Line Items]
Base Lease Term With Renewal Periods (Year)	10 years
Escalation Clause	2.00%
6100 Tower Circle, Franklin
Property Subject to or Available for Operating Lease [Line Items]
Base Lease Term With Renewal Periods (Year)	0 years
Escalation Clause	2.50%
1835 E. Northfield Blvd. Murfreesboro
Property Subject to or Available for Operating Lease [Line Items]
Base Lease Term With Renewal Periods (Year)	5 years
Escalation Clause	3.00%
1412 Trotwood Ave., Columbia
Property Subject to or Available for Operating Lease [Line Items]
Base Lease Term With Renewal Periods (Year)	0 years
4108 Hillsboro Pike, Nashville
Property Subject to or Available for Operating Lease [Line Items]
Base Lease Term With Renewal Periods (Year)	0 years
Escalation Clause, after 5th year of inital term	10.00%
Escalation Clause, after intial lease term	12.00%

Leases - Future Minimum Rental

Leases - Future Minimum Rental Payments (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2,019	$ 2,216
2,020	2,254
2,021	1,943
2,022	1,649
2,023	1,685
Thereafter	4,650
Total	$ 14,397

Leases - Textual (Details)

Leases - Textual (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Leases [Abstract]
Operating leases, rent expense	$ 2,536	$ 2,055	$ 1,954

Financial Instruments with Of_3

Financial Instruments with Off-Balance-Sheet Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments with off-balance-sheet risk	$ 270,496	$ 198,764
Fixed
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments with off-balance-sheet risk	44,053	49,637
Variable
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments with off-balance-sheet risk	209,898	135,951
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Financial instruments with off-balance-sheet risk	$ 16,544	$ 13,176

Derivatives - Textual (Details)

Derivatives - Textual (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Derivative, notional amount		$ 21,505,000	$ 21,505,000
Cash Flow Hedging | Interest Rate Swap
Derivative [Line Items]
Derivative, notional amount	$ 60,000,000

Derivatives - Interest Rate Swa

Derivatives - Interest Rate Swaps Designated as Cash Flow Hedges (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative [Line Items]
Notional amounts		$ 21,505,000	$ 21,505,000
Cash Flow Hedging | Interest Rate Swap
Derivative [Line Items]
Notional amounts	$ 60,000,000
Weighted average pay rates	3.338%
Weighted average receive rates	2.856%
Weighted average maturity	4 years 5 months 19 days
Unrealized losses	$ 1,153,000	$ 0	$ 0

Derivatives - Net Gains (Losses

Derivatives - Net Gains (Losses) Relating to Cash Flow Derivative Instruments (Details) - Interest Rate Swap - Cash Flow Hedging - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in OCI (Effective Portion)	$ (1,153)	$ 0	$ 0
Amount of Gain (Loss) Reclassified from OCI to Interest Income	0	0	0
Amount of Gain (Loss) Recognized in Other Non-Interest Income (Ineffective Portion)	$ 0	$ 0	$ 0

Derivatives - Cash Flow Hedges

Derivatives - Cash Flow Hedges and Fair Value Hedges Included in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Cash Flow Hedging | Other assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	$ 0	$ 0
Derivative Asset, Fair Value	0	0
Cash Flow Hedging | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	60,000	0
Derivative Liability, Fair Value	1,153	0
Cash Flow Hedging | Interest Rate Swap | Subordinated debentures
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	10,000	0
Derivative Liability, Fair Value	174	0
Cash Flow Hedging | Interest Rate Swap | Federal Home Loan Bank borrowings
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	50,000	0
Derivative Liability, Fair Value	979	0
Fair Value Hedging | Other assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	16,902	9,882
Derivative Asset, Fair Value	467	155
Fair Value Hedging | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	4,203	11,623
Derivative Liability, Fair Value	30	180
Fair Value Hedging | Interest Rate Swap | Other assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Notional Amount	16,902	9,882
Derivative Asset, Fair Value	467	155
Fair Value Hedging | Interest Rate Swap | Other liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	4,203	11,623
Derivative Liability, Fair Value	$ 30	$ 180

Derivatives _ Fair Value Hedges

Derivatives – Fair Value Hedges Included in the Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest Rate Swap | Interest income | Fair Value Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Change in fair value on interest rate swaps hedging investments	$ 462	$ 47	$ 422

Earnings Per Share (Details)

Earnings Per Share (Details) - 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, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Basic EPS Computation
Net income attributable to common shareholders													$ 14,085	$ 7,246	$ 8,936
Weighted average common shares outstanding (in shares)													11,389,122	8,151,492	7,586,993
Basic earnings per common share (in dollars per share)	$ 0.36	$ 0.36	$ 0.19	$ 0.33	$ 0.13	$ 0.23	$ 0.28	$ 0.27	$ 0.26	$ 0.31	$ 0.31	$ 0.30	$ 1.24	$ 0.89	$ 1.18
Diluted EPS Computation
Net income attributable to common shareholders													$ 14,085	$ 7,246	$ 8,936
Weighted average common shares outstanding (in shares)													11,389,122	8,151,492	7,586,993
Dilutive effect of stock options and restricted shares (in shares)													79,667	87,809	104,500
Adjusted weighted average common shares outstanding (in shares)													11,468,789	8,239,301	7,691,493
Diluted earnings per common share (in dollars per share)	$ 0.36	$ 0.36	$ 0.19	$ 0.33	$ 0.13	$ 0.22	$ 0.28	$ 0.26	$ 0.25	$ 0.30	$ 0.31	$ 0.30	$ 1.23	$ 0.88	$ 1.16
Stock options for common stock and restricted shares excluded from computation of earnings per share (in shares)													62,910	10,500	2,500

Segment Reporting - Textual (De

Segment Reporting - Textual (Details)	12 Months Ended
	Dec. 31, 2018segment
Segment Reporting [Abstract]
Number of reportable segments	2

Segment Reporting - Summary of

Segment Reporting - Summary of Results of Operations for Company's Business Segments (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, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net interest income	$ 13,577	$ 13,466	$ 13,404	$ 13,382	$ 8,917	$ 9,096	$ 8,503	$ 7,971	$ 8,043	$ 7,835	$ 8,692	$ 8,082	$ 53,829	$ 34,487	$ 32,652
Provision for loan losses													1,035	1,316	968
Noninterest income													9,646	6,010	8,800
Noninterest expense													50,561	31,076	30,374
Income tax expense (benefit)													1,372	1,942	2,213
CONSOLIDATED NET INCOME	2,788	3,240	1,202	3,277	970	1,840	1,794	1,559	1,439	1,763	2,137	2,558	10,507	6,163	7,897
Noncontrolling interest in net loss of subsidiary	1,335	842	937	464	185	6	393	499	532	605	223	(321)	3,578	1,083	1,039
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 4,123	$ 4,082	$ 2,139	$ 3,741	$ 1,155	$ 1,846	$ 2,187	$ 2,058	$ 1,971	$ 2,368	$ 2,360	$ 2,237	14,085	7,246	8,936
Operating Segments | Retail Banking
Segment Reporting Information [Line Items]
Net interest income													53,008	33,761	32,035
Provision for loan losses													1,035	1,316	968
Noninterest income													5,232	2,333	2,481
Noninterest expense													41,512	25,524	22,327
Income tax expense (benefit)													1,608	2,008	2,285
CONSOLIDATED NET INCOME													14,085	7,246	8,936
Noncontrolling interest in net loss of subsidiary													0	0	0
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS													14,085	7,246	8,936
Operating Segments | Residential Mortgage Banking
Segment Reporting Information [Line Items]
Net interest income													821	726	617
Provision for loan losses													0	0	0
Noninterest income													4,595	3,805	6,319
Noninterest expense													9,049	5,552	8,047
Income tax expense (benefit)													(236)	(66)	(72)
CONSOLIDATED NET INCOME													(3,397)	(955)	(1,039)
Noncontrolling interest in net loss of subsidiary													3,397	955	1,039
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS													0	0	0
Elimination Entries
Segment Reporting Information [Line Items]
Net interest income													0	0	0
Provision for loan losses													0	0	0
Noninterest income													(181)	(128)	0
Noninterest expense													0	0	0
Income tax expense (benefit)													0	0	0
CONSOLIDATED NET INCOME													(181)	(128)	0
Noncontrolling interest in net loss of subsidiary													181	128	0
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS													$ 0	$ 0	$ 0

Business Combination - Textual

Business Combination - Textual (Details) $ in Thousands

3 Months Ended

12 Months Ended

Dec. 31, 2018USD ($)

Sep. 30, 2018USD ($)

Jun. 30, 2018USD ($)

Mar. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Sep. 30, 2017USD ($)

Jun. 30, 2017USD ($)

Mar. 31, 2017USD ($)

Dec. 31, 2016USD ($)

Sep. 30, 2016USD ($)

Jun. 30, 2016USD ($)

Mar. 31, 2016USD ($)

Dec. 31, 2018USD ($)

Dec. 31, 2017USD ($)

Dec. 31, 2016USD ($)

Jan. 01, 2018

Business Acquisition [Line Items]

Net income

$ 4,123

$ 4,082

$ 2,139

$ 3,741

$ 1,155

$ 1,846

$ 2,187

$ 2,058

$ 1,971

$ 2,368

$ 2,360

$ 2,237

$ 14,085

$ 7,246

$ 8,936

Community First

Business Acquisition [Line Items]

Exchange ratio for Reliant Bancorp, Inc. common stock

0.481

Other assets adjustment

(93)

Payables and other liabilities adjustment

85

Pro forma net interest income, adjustment

$ 564

564

Acquisition-related Costs | Community First

Business Acquisition [Line Items]

Net income

(5,478)

Acquisition-related Costs, Tax Benefit | Community First

Business Acquisition [Line Items]

Net income

$ (536)

Nonrecurring Income | Community First

Business Acquisition [Line Items]

Net income

$ 4,168

Business Combination - Financia

Business Combination - Financial Impact of Merger (Details) $ / shares in Units, $ in Thousands	Jan. 01, 2018USD ($)shares	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)shares	Dec. 29, 2017$ / shares
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill		$ 43,642	$ 11,404
Community First
Calculation of Purchase Price
Shares of Community First, Inc. common stock outstanding (in shares) | shares			5,025,884
Exchange ratio for Reliant Bancorp, Inc. common stock	0.481
Share conversion (in shares) | shares	2,417,450
Reliant Bancorp, Inc. common stock shares issued (in shares) | shares	2,416,444
Reliant Bancorp, Inc. share price at December 29, 2017 (in dollars per share) | $ / shares				$ 25.64
Value of Reliant Bancorp, Inc. common stock shares issued	$ 61,958
Value of fractional shares	25
Estimated fair value of Community First, Inc.	61,983
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Total consideration above	61,983
Cash and cash equivalents	(33,128)
Time deposits in other financial institutions	(23,309)
Investment securities available for sale	(69,078)
Loans, net of unearned income	(313,040)
Mortgage loans held for sale, net	(910)
Accrued interest receivable	(1,165)
Premises and equipment	(9,585)
Restricted equity securities	(1,726)
Cash surrender value of life insurance contracts	(10,664)
Other real estate owned	(1,650)
Deferred tax asset, net	(4,885)
Core deposit intangible	(7,888)
Other assets	(1,795)
Deposits—noninterest-bearing	80,395
Deposits—interest-bearing	352,100
Other borrowings	11,522
Payables and other liabilities	5,061
Net liabilities assumed (net assets acquired)	(29,745)
Goodwill	$ 32,238

Business Combination - Pro Form

Business Combination - Pro Forma Data (Details) - Community First - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Net interest income	$ 51,031	$ 48,724
Net income attributable to common shareholders	$ 6,387	$ 17,660
Earnings per share - basic (in dollars per share)	$ 0.60	$ 1.84
Earnings per share - diluted (in dollars per share)	$ 0.60	$ 1.82

Quarterly Financial Results (_3

Quarterly Financial Results (Unaudited) (Details) - 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, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 18,463	$ 17,570	$ 16,830	$ 16,362	$ 10,854	$ 10,627	$ 9,704	$ 8,973	$ 8,948	$ 8,656	$ 9,497	$ 8,914	$ 69,225	$ 40,158	$ 36,015
Net interest income	13,577	13,466	13,404	13,382	8,917	9,096	8,503	7,971	8,043	7,835	8,692	8,082	53,829	34,487	32,652
Net income (loss)	2,788	3,240	1,202	3,277	970	1,840	1,794	1,559	1,439	1,763	2,137	2,558	10,507	6,163	7,897
Noncontrolling interest in net loss of subsidiary	1,335	842	937	464	185	6	393	499	532	605	223	(321)	3,578	1,083	1,039
Net income attributable to common shareholders	$ 4,123	$ 4,082	$ 2,139	$ 3,741	$ 1,155	$ 1,846	$ 2,187	$ 2,058	$ 1,971	$ 2,368	$ 2,360	$ 2,237	$ 14,085	$ 7,246	$ 8,936
Basic earnings per common share (in dollars per share)	$ 0.36	$ 0.36	$ 0.19	$ 0.33	$ 0.13	$ 0.23	$ 0.28	$ 0.27	$ 0.26	$ 0.31	$ 0.31	$ 0.30	$ 1.24	$ 0.89	$ 1.18
Diluted earnings per common share (in dollars per share)	$ 0.36	$ 0.36	$ 0.19	$ 0.33	$ 0.13	$ 0.22	$ 0.28	$ 0.26	$ 0.25	$ 0.30	$ 0.31	$ 0.30	$ 1.23	$ 0.88	$ 1.16

Mortgage Operations (Details)

Mortgage Operations (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Noncontrolling Interest [Line Items]
Cumulative losses, payable balance	$ 1,484	$ 342
Cumulative net loss in joint ventures	$ 8,058
Reliant Mortgage Ventures, LLC
Noncontrolling Interest [Line Items]
Noncontrolling interest, ownership percentage by parent	51.00%
Financial rights, ownership percentage in joint venture	30.00%
Profit share percentage in joint venture	30.00%
Reliant Mortgage Ventures, LLC | VHC Fund 1, LLC
Noncontrolling Interest [Line Items]
Financial rights, ownership percentage in joint venture	70.00%
Profit share percentage in joint venture	70.00%
Operating loss, percentage share in joint venture	100.00%	100.00%	100.00%
Reliant Mortgage Ventures, LLC | VHC Fund 1, LLC
Noncontrolling Interest [Line Items]
Noncontrolling interest, ownership percentage by noncontrolling owners	49.00%

Parent Company Condensed Fina_3

Parent Company Condensed Financial Information - Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 35,178	$ 20,668	$ 24,243	$ 20,570
Other assets	9,091	5,601
TOTAL ASSETS	1,724,338	1,125,034
LIABILITIES AND STOCKHOLDERS’ EQUITY
Dividends payable	1,036	542
Subordinated debentures	11,603	0
Shareholders' equity	208,414	140,137
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	1,724,338	1,125,034
Parent Company
ASSETS
Cash and cash equivalents	1,985	1,709	$ 166	$ 113
Investment in subsidiaries	225,446	137,765
Other assets	3,447	1,841
TOTAL ASSETS	230,878	141,315
LIABILITIES AND STOCKHOLDERS’ EQUITY
Dividends payable	1,036	542
Accrued expenses and other liabilities	406	636
Subordinated debentures	21,022	0
Shareholders' equity	208,414	140,137
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 230,878	$ 141,315

Parent Company Condensed Fina_4

Parent Company Condensed Financial Information - Condensed Statement of Income (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, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Income Statements, Captions [Line Items]
Interest expense													$ 15,396	$ 5,671	$ 3,363
Income tax expense (benefit)													1,372	1,942	2,213
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 4,123	$ 4,082	$ 2,139	$ 3,741	$ 1,155	$ 1,846	$ 2,187	$ 2,058	$ 1,971	$ 2,368	$ 2,360	$ 2,237	14,085	7,246	8,936
Parent Company
Condensed Income Statements, Captions [Line Items]
Dividends from subsidiaries													7,521	2,141	3,161
Interest expense													1,277	0	0
Other expense													4,775	2,920	1,326
Income before income tax and undistributed income from subsidiaries													1,469	(779)	1,835
Income tax expense (benefit)													(1,537)	(922)	(508)
Equity in undistributed income from subsidiaries													11,079	7,103	6,593
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS													$ 14,085	$ 7,246	$ 8,936

Parent Company Condensed Fina_5

Parent Company Condensed Financial Information - Condensed Statement of Cash Flows (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, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities
Net income attributable to common shareholders	$ 4,123	$ 4,082	$ 2,139	$ 3,741	$ 1,155	$ 1,846	$ 2,187	$ 2,058	$ 1,971	$ 2,368	$ 2,360	$ 2,237	$ 14,085	$ 7,246	$ 8,936
Reclassification of federal income tax rate change													0	(245)	0
Adjustments:
Change in other assets													(372)	4,371	(6,580)
Change in other liabilities													(2,260)	403	1,501
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES													42,265	(20,323)	47,075
Cash flows from investing activities
NET CASH USED IN INVESTING ACTIVITIES													(109,716)	(185,864)	(71,229)
Cash flows from financing activities
Shares acquired from dissenting shareholder													(6)	0	0
NET CASH PROVIDED BY FINANCING ACTIVITIES													81,961	202,612	27,827
NET CHANGE IN CASH AND CASH EQUIVALENTS													14,510	(3,575)	3,673
CASH AND CASH EQUIVALENTS - BEGINNING OF PERIOD				20,668				24,243				20,570	20,668	24,243	20,570
CASH AND CASH EQUIVALENTS - END OF PERIOD	35,178				20,668				24,243				35,178	20,668	24,243
Parent Company
Cash flows from operating activities
Net income attributable to common shareholders													14,085	7,246	8,936
Reclassification of federal income tax rate change													0	(245)	0
Adjustments:
Equity in undistributed income from subsidiaries													(11,079)	(7,103)	(6,593)
Accretion related to subordinated debentures													969	0	0
Change in other assets													(1,333)	790	(219)
Change in other liabilities													(230)	595	(582)
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES													2,412	1,283	1,542
Cash flows from investing activities
Investment in subsidiary													0	(21,195)	(4,772)
NET CASH USED IN INVESTING ACTIVITIES													0	(21,195)	(4,772)
Cash flows from financing activities
Dividends paid													(3,451)	(3,193)	(1,489)
Shares acquired from dissenting shareholder													(6)	0	0
Proceeds from equity issuances, net													1,321	24,648	4,772
NET CASH PROVIDED BY FINANCING ACTIVITIES													(2,136)	21,455	3,283
NET CHANGE IN CASH AND CASH EQUIVALENTS													276	1,543	53
CASH AND CASH EQUIVALENTS - BEGINNING OF PERIOD				$ 1,709				$ 166				$ 113	1,709	166	113
CASH AND CASH EQUIVALENTS - END OF PERIOD	$ 1,985				$ 1,709				$ 166				$ 1,985	$ 1,709	$ 166

Subsequent Events (Details)

Subsequent Events (Details) - Arkansas Facility - Subsequent Event $ in Thousands	2 Months Ended
	Mar. 05, 2019USD ($)
Subsequent Event [Line Items]
Operating lease, term of contract	2 years
Operating lease, monthly payment	$ 6