Reliant Bancorp (RBNC) 10-Q 6 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Aug. 02, 2019
Cover page.
Document Type	10-Q
Entity Registrant Name	Reliant Bancorp, Inc.
Entity Central Index Key	0001606440
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Small Business	true
Entity Shell Company	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding (in shares)		11,195,062
Document Period End Date	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 35,917	$ 34,807
Federal funds sold	80	371
Total cash and cash equivalents	35,997	35,178
Securities available for sale	290,373	296,323
Loans, net	1,301,019	1,220,184
Mortgage loans held for sale, net	11,571	15,823
Accrued interest receivable	7,246	8,214
Premises and equipment, net	21,632	22,033
Restricted equity securities, at cost	11,488	11,690
Other real estate, net	1,848	1,000
Cash surrender value of life insurance contracts	46,068	45,513
Deferred tax assets, net	3,133	7,428
Goodwill	43,642	43,642
Core deposit intangibles	7,745	8,219
Other assets	12,486	9,091
TOTAL ASSETS	1,794,248	1,724,338
Deposits
Demand	225,380	216,937
Interest-bearing demand	144,265	154,218
Savings and money market deposit accounts	368,764	401,308
Time	811,871	665,440
Total deposits	1,550,280	1,437,903
Accrued interest payable	967	1,063
Subordinated debentures	11,644	11,603
Federal Home Loan Bank advances	11,119	57,498
Dividends payable	1,008	1,036
Other liabilities	5,287	6,821
TOTAL LIABILITIES	1,580,305	1,515,924
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; 11,196,563 and 11,530,810 shares issued and outstanding at June 30, 2019, and December 31, 2018, respectively	11,197	11,531
Additional paid-in capital	166,252	173,238
Retained earnings	33,349	27,329
Accumulated other comprehensive income (loss)	3,145	(3,684)
TOTAL STOCKHOLDERS’ EQUITY	213,943	208,414
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,794,248	$ 1,724,338

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Jun. 30, 2019	Dec. 31, 2018
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)	11,196,563	11,530,810
Common stock, shares outstanding (in shares)	11,196,563	11,530,810

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
INTEREST INCOME
Interest and fees on loans	$ 16,960	$ 14,066	$ 33,129	$ 27,624
Interest and fees on loans held for sale	198	326	351	807
Interest on investment securities, taxable	587	453	1,090	960
Interest on investment securities, nontaxable	1,650	1,708	3,368	3,212
Federal funds sold and other	297	277	597	589
TOTAL INTEREST INCOME	19,692	16,830	38,535	33,192
Deposits
Demand	86	84	197	161
Savings and money market deposit accounts	1,051	574	2,181	1,052
Time	4,369	2,199	7,940	4,195
Federal Home Loan Bank advances and other	175	397	552	669
Subordinated debentures	198	172	391	329
TOTAL INTEREST EXPENSE	5,879	3,426	11,261	6,406
NET INTEREST INCOME	13,813	13,404	27,274	26,786
PROVISION FOR LOAN LOSSES	200	300	200	437
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	13,613	13,104	27,074	26,349
NONINTEREST INCOME
Gains on mortgage loans sold, net	1,225	957	1,785	2,662
Gain on securities transactions, net	175	25	306	25
Gain on sale of other real estate	0	20	0	109
Other	362	352	725	778
TOTAL NONINTEREST INCOME	2,698	2,254	4,636	5,245
NONINTEREST EXPENSE
Salaries and employee benefits	7,706	6,613	14,971	13,567
Occupancy	1,358	1,210	2,710	2,439
Information technology	1,575	1,249	2,985	2,598
Advertising and public relations	275	141	529	230
Audit, legal and consulting	690	816	1,486	1,439
Federal deposit insurance	249	224	444	420
Merger expenses	1	2,483	3	2,660
Other operating	1,272	1,305	2,744	2,850
TOTAL NONINTEREST EXPENSE	13,126	14,041	25,872	26,203
INCOME BEFORE PROVISION FOR INCOME TAXES	3,185	1,317	5,838	5,391
INCOME TAX EXPENSE	501	115	873	912
CONSOLIDATED NET INCOME	2,684	1,202	4,965	4,479
NONCONTROLLING INTEREST IN NET LOSS OF SUBSIDIARY	1,555	937	3,098	1,401
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 4,239	$ 2,139	$ 8,063	$ 5,880
Basic net income attributable to common shareholders, per share (in dollars per share)	$ 0.38	$ 0.19	$ 0.71	$ 0.52
Diluted net income attributable to common shareholders, per share (in dollars per share)	$ 0.38	$ 0.19	$ 0.71	$ 0.51
Deposit Account
NONINTEREST INCOME
Service charges on deposit accounts	$ 936	$ 900	$ 1,820	$ 1,671

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Consolidated net income	$ 2,684	$ 1,202	$ 4,965	$ 4,479
Other comprehensive income (loss)
Net unrealized gains (losses) on available-for-sale securities, net of tax of ($1,241) and ($31) for the three months ended June 30, 2019 and 2018, respectively, and ($2,962) and $1,548 for the six months ended June 30, 2019 and 2018, respectively	3,523	36	8,386	(4,378)
Net unrealized losses on interest rate swap derivatives net of tax of $304 for the three months ended June 30, 2019 and $471 for the six months ended June 30, 2019	(861)	0	(1,331)	0
Reclassification adjustment for gains included in net income, net of tax of $46 and $7 for the three months ended June 30, 2019 and 2018, respectively, and $80 and $7 for the six months ended June 30, 2019 and 2018, respectively	(129)	(18)	(226)	(18)
TOTAL OTHER COMPREHENSIVE INCOME (LOSS)	2,533	18	6,829	(4,396)
TOTAL COMPREHENSIVE INCOME	$ 5,217	$ 1,220	$ 11,794	$ 83

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net unrealized gains on available-for-sale securities, tax (benefit)	$ 1,241	$ 31	$ 2,962	$ (1,548)
Net unrealized losses on interest rate swap derivatives, tax	304		471
Reclassification adjustment for (gains) included in net income, tax	$ 46	$ 7	$ 80	$ 7

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, 2017		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	224		224
Exercise of stock options (in shares)		25,225
Exercise of stock options	340	$ 25	315
Restricted stock awards (in shares)		4,500
Restricted stock awards	0	$ 5	(5)
Restricted stock forfeiture (in shares)		(1,000)
Restricted stock forfeiture	0	$ (1)	1
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
Noncontrolling interest contributions	464					464
Cash dividend declared to common shareholders	(1,060)			(1,060)
Net income (loss)	3,277			3,741		(464)
Other comprehensive income (loss)	(4,414)				(4,414)
BALANCE (in shares) at Mar. 31, 2018		11,479,608
BALANCE at Mar. 31, 2018	200,951	$ 11,480	172,538	19,870	(2,937)	0
BALANCE (in shares) at Dec. 31, 2017		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]
Net income (loss)	4,479
Other comprehensive income (loss)	(4,396)
BALANCE (in shares) at Jun. 30, 2018		11,482,965
BALANCE at Jun. 30, 2018	202,340	$ 11,483	172,686	21,090	(2,919)	0
BALANCE (in shares) at Mar. 31, 2018		11,479,608
BALANCE at Mar. 31, 2018	200,951	$ 11,480	172,538	19,870	(2,937)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	148		148
Exercise of stock options (in shares)		357
Exercise of stock options	3		3
Restricted stock awards (in shares)		3,000
Restricted stock awards	0	$ 3	(3)
Noncontrolling interest contributions	937					937
Cash dividend declared to common shareholders	(919)			(919)
Net income (loss)	1,202			2,139		(937)
Other comprehensive income (loss)	18				18
BALANCE (in shares) at Jun. 30, 2018		11,482,965
BALANCE at Jun. 30, 2018	$ 202,340	$ 11,483	172,686	21,090	(2,919)	0
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	250		250
Exercise of stock options (in shares)		2,183
Exercise of stock options	28	$ 2	26
Restricted stock awards (in shares)		3,000
Restricted stock awards	0	$ 3	(3)
Restricted stock and dividend forfeiture (in shares)		(3,750)
Restricted stock and dividend forfeiture	1	$ (4)	4	1
Common stock shares redeemed (in shares)		(29,958)
Common stock shares redeemed	(659)	$ (30)	(629)
Noncontrolling interest contributions	1,543					1,543
Cash dividend declared to common shareholders	(1,035)			(1,035)
Net income (loss)	2,281			3,824		(1,543)
Other comprehensive income (loss)	4,296				4,296
BALANCE (in shares) at Mar. 31, 2019		11,502,285
BALANCE at Mar. 31, 2019	$ 215,119	$ 11,502	172,886	30,119	612	0
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
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)	26,706
Net income (loss)	$ 4,965
Other comprehensive income (loss)	$ 6,829
BALANCE (in shares) at Jun. 30, 2019	11,196,563	11,196,563
BALANCE at Jun. 30, 2019	$ 213,943	$ 11,197	166,252	33,349	3,145	0
BALANCE (in shares) at Mar. 31, 2019		11,502,285
BALANCE at Mar. 31, 2019	215,119	$ 11,502	172,886	30,119	612	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense	280		280
Exercise of stock options (in shares)		24,523
Exercise of stock options	323	$ 25	298
Employee Stock Purchase Plan stock issuance (in shares)		4,728
Employee Stock Purchase Plan stock issuance	90	$ 5	85
Restricted stock awards (in shares)		5,000
Restricted stock awards	0	$ 5	(5)
Restricted stock and dividend forfeiture (in shares)		(4,000)
Restricted stock and dividend forfeiture	0	$ (4)	4
Common stock shares redeemed (in shares)		(335,973)
Common stock shares redeemed	(7,632)	$ (336)	(7,296)
Noncontrolling interest contributions	1,555					1,555
Cash dividend declared to common shareholders	(1,009)			(1,009)
Net income (loss)	2,684			4,239		(1,555)
Other comprehensive income (loss)	$ 2,533				2,533
BALANCE (in shares) at Jun. 30, 2019	11,196,563	11,196,563
BALANCE at Jun. 30, 2019	$ 213,943	$ 11,197	$ 166,252	$ 33,349	$ 3,145	$ 0

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
OPERATING ACTIVITIES
Consolidated net income	$ 4,965	$ 4,479
Adjustments to reconcile consolidated net income to net cash provided by operating activities
Provision for loan losses	200	437
Deferred income taxes (benefit)	1,880	(374)
Depreciation and amortization of premises and equipment	991	792
Net amortization of securities	1,586	1,515
Net realized gains on sales of securities	(306)	(25)
Gains on mortgage loans sold, net	(1,785)	(2,662)
Stock-based compensation expense	530	372
Realization of gain on other real estate	0	(109)
Increase in cash surrender value of life insurance contracts	(555)	(600)
Mortgage loans originated for resale	(57,816)	(70,064)
Proceeds from sale of mortgage loans	63,853	87,795
Other accretion	(380)	(471)
Change in
Accrued interest receivable	968	(565)
Other assets	(3,202)	(856)
Accrued interest payable	(96)	496
Other liabilities	(4,389)	(1,321)
TOTAL ADJUSTMENTS	1,479	14,360
NET CASH PROVIDED BY OPERATING ACTIVITIES	6,444	18,839
INVESTING ACTIVITIES
Cash received from merger	0	33,128
Activities in available for sale securities
Purchases	(41,083)	(103,323)
Sales	52,434	92,991
Maturities, prepayments and calls	5,418	6,862
Purchases of restricted equity securities	0	(2,177)
Redemption of restricted equity securities	202	0
Net increase in loans	(81,026)	(57,337)
Purchase of buildings, leasehold improvements, and equipment	(590)	(1,372)
Proceeds from sale of other real estate	0	670
NET CASH USED IN INVESTING ACTIVITIES	(64,645)	(30,558)
FINANCING ACTIVITIES
Net change in deposits	112,388	18,298
Net change in advances from Federal Home Loan Bank	(46,352)	6,154
Issuance of common stock, net	351	343
Issuance of common stock from Employee Stock Purchase Plan	90	0
Redemption of common stock	(8,291)	0
Noncontrolling interest contributions received	2,905	560
Cash dividends paid on common stock	(2,071)	(1,602)
NET CASH PROVIDED BY FINANCING ACTIVITIES	59,020	23,753
NET CHANGE IN CASH AND CASH EQUIVALENTS	819	12,034
CASH AND CASH EQUIVALENTS - BEGINNING OF PERIOD	35,178	20,668
CASH AND CASH EQUIVALENTS - END OF PERIOD	35,997	32,702
Cash paid during the period for
Interest	11,357	5,910
Taxes	536	1,623
Non-cash investing and financing activities
Unrealized gain (loss) on securities available-for-sale	12,099	(6,499)
Unrealized gain (loss) on derivatives	(2,859)	598
Change in due to/from noncontrolling interest	3,098	1,401
Loans foreclosed and transferred to other real estate owned and foreclosed assets	$ 848	$ 1,060

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The accounting and reporting policies of Reliant Bancorp, Inc. conform to accounting principles generally accepted in the United States of America ("U.S. GAAP") and to general practices within the banking industry. The following is a brief summary of the significant policies. Nature of Operations Reliant Bank began organizational activities in 2005. Reliant Bancorp, Inc. provides financial services through its wholly owned bank subsidiary, Reliant Bank, which has 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. Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in accordance with instructions to Quarterly Report on Form 10-Q and therefore do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, and cash flows in conformity with U.S. GAAP. All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods covered by the report have been included. The accompanying unaudited consolidated financial statements should be read in conjunction with Reliant Bancorp, Inc.’s consolidated financial statements and related notes appearing in Reliant Bancorp, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2018 . The consolidated financial statements as of and for the periods presented include the accounts of Reliant Bancorp Inc., Reliant Bank (the "Bank"), Community First TRUPS Holding Company ("TRUPS"), which is wholly owned by Reliant Bancorp Inc., Reliant Investment Holdings, LLC ("Holdings"), which is wholly owned by the Bank, and Reliant Mortgage Ventures, LLC ("RMV"), of which the Bank controls 51% of the governance rights. Reliant Bancorp Inc., the Bank, TRUPS, Holdings and RMV, are, collectively, referred to herein as the “Company”. All significant inter-company balances and transactions have been eliminated in consolidation. As described in Note 12 to these unaudited consolidated financial statements, Reliant Bancorp, Inc. and Community First, Inc. ("Community First") merged effective on January 1, 2018. The accounting and reporting policies of the Company conform to U.S. GAAP and general practices in the banking industry. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP 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. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Use of Estimates (Continued) The consolidated financial statements as of June 30, 2019 , and for the three and six months ended June 30, 2019 and 2018 , included herein have not been audited. The accounting and reporting policies of the Company conform to U.S. GAAP and Article 8 of Regulation S-X. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission, although the Company believes that the disclosures made are adequate to make the information not misleading. The accompanying consolidated financial statements reflect all adjustments, which are, in the opinion of management, necessary to present a fair statement of the results for the interim periods presented. Such adjustments are of a normal recurring nature. The Company evaluates subsequent events through the date of filing. Certain prior period amounts have been reclassified to conform to the current period presentation. The results for the three and six months ended June 30, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019 . Reclassifications Certain reclassifications were made to the June 30, 2018 financial statement presentation in order to conform to the June 30, 2019 financial statement presentation. Total stockholders' equity and net income are unchanged due to these reclassifications.

Securities

Securities	6 Months Ended
	Jun. 30, 2019
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 at June 30, 2019 and December 31, 2018 were as follows: June 30, 2019 Amortized Gross Gross Estimated U. S. Treasury and other U. S. government agencies $ 313 $ — $ (1 ) $ 312 State and municipal 212,157 8,540 (83 ) 220,614 Corporate bonds 3,130 2 (113 ) 3,019 Mortgage backed securities 37,515 190 (197 ) 37,508 Asset backed securities 29,430 12 (522 ) 28,920 Total $ 282,545 $ 8,744 $ (916 ) $ 290,373 December 31, 2018 Amortized Gross Gross Estimated 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 NOTE 2 - SECURITIES (CONTINUED) Securities pledged at June 30, 2019 and December 31, 2018 had a carrying amount of $59,682 and $70,097 , respectively, and were pledged to collateralize Federal Home Loan Bank advances, Federal Reserve advances and municipal deposits. At June 30, 2019 and December 31, 2018 , there were no holdings of securities of any one issuer, other than the U.S. government and its agencies, in an amount greater than 10% of stockholders’ equity. The fair value of available for sale debt securities at June 30, 2019 by contractual maturity are provided below. Actual maturities may differ from contractual maturities for mortgage and asset backed securities since the underlying asset may be called or prepaid with or without penalty. Securities not due at a single maturity date are shown separately. Amortized Cost Estimated Fair Value Due within one year $ 660 $ 663 Due in one to five years 938 935 Due in five to ten years 7,240 7,400 Due after ten years 206,762 214,947 Mortgage backed securities 37,515 37,508 Asset backed securities 29,430 28,920 Total $ 282,545 $ 290,373 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 have been in a continuous unrealized loss position as of June 30, 2019 : Less than 12 months 12 months or more Total Estimated Fair Value Unrealized Loss Estimated Unrealized Estimated Unrealized Description of Securities U. S. Treasury and other U. S. government agencies $ — $ — $ 249 $ 1 $ 249 $ 1 State and municipal — — 9,611 83 9,611 83 Corporate bonds — — 2,517 113 2,517 113 Mortgage backed securities 9,706 127 5,200 70 14,906 197 Asset backed securities 2,100 6 24,704 516 26,804 522 Total temporarily impaired $ 11,806 $ 133 $ 42,281 $ 783 $ 54,087 $ 916 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 have been in a continuous unrealized loss position as of December 31, 2018 : Less than 12 months 12 months or more Total Estimated Unrealized Estimated Unrealized Estimated Unrealized Description of Securities 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 Management has the intent and ability to hold all securities in an unrealized loss position for the foreseeable future, and the decline in fair value is 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 69 and 242 securities in an unrealized loss position as of June 30, 2019 and December 31, 2018 , respectively.

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2019
Receivables [Abstract]
LOANS AND ALLOWANCE FOR LOAN LOSSES	LOANS AND ALLOWANCE FOR LOAN LOSSES Loans at June 30, 2019 and December 31, 2018 were comprised as follows: June 30, 2019 December 31, 2018 Commercial, Industrial and Agricultural $ 233,312 $ 213,850 Real Estate 1-4 Family Residential 233,229 225,863 1-4 Family HELOC 94,436 88,112 Multi-family and Commercial 481,973 447,840 Construction, Land Development and Farmland 237,421 220,801 Consumer 18,881 20,495 Other 13,338 14,106 Total 1,312,590 1,231,067 Less Deferred loan fees (cost) (95 ) (9 ) Allowance for possible loan losses 11,666 10,892 Loans, net $ 1,301,019 $ 1,220,184 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Activity in the allowance for loan losses by portfolio segment was as follows for the six months ended June 30, 2019 : Commercial Industrial and Agricultural Multi-family and Commercial Real Estate Construction Land Development and Farmland 1-4 Family Residential Real Estate Beginning balance $ 1,751 $ 4,429 $ 2,500 $ 1,333 Charge-offs (168 ) — — (17 ) Recoveries 294 59 201 216 Provision 4 225 6 (77 ) Ending balance $ 1,881 $ 4,713 $ 2,707 $ 1,455 1-4 Family HELOC Consumer Other Total Beginning balance $ 656 $ 184 $ 39 $ 10,892 Charge-offs — (21 ) (13 ) (219 ) Recoveries 11 12 — 793 Provision 19 13 10 200 Ending balance $ 686 $ 188 $ 36 $ 11,666 Activity in the allowance for loan losses by portfolio segment was as follows for the six months ended June 30, 2018 : Commercial Industrial and Agricultural Multi-family and Commercial Real Estate Construction Land Development and Farmland 1-4 Family Residential Real Estate Beginning balance $ 2,538 $ 3,166 $ 2,434 $ 773 Charge-offs (308 ) — (140 ) (8 ) Recoveries 425 3 44 11 Provision (970 ) 692 177 469 Ending balance $ 1,685 $ 3,861 $ 2,515 $ 1,245 1-4 Family HELOC Consumer Other Total Beginning balance $ 595 $ 183 $ 42 $ 9,731 Charge-offs (6 ) (24 ) (22 ) (508 ) Recoveries 5 18 3 509 Provision 42 15 12 437 Ending balance $ 636 $ 192 $ 35 $ 10,169 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 June 30, 2019 was as follows: Commercial Industrial and Agricultural Multi-family and Commercial Real Estate Construction Land Development and Farmland 1-4 Family Residential Real Estate Allowance for loan losses Individually evaluated for impairment $ 72 $ — $ 17 $ — Acquired with credit impairment — — — — Collectively evaluated for impairment 1,809 4,713 2,690 1,455 Total $ 1,881 $ 4,713 $ 2,707 $ 1,455 Loans Individually evaluated for impairment $ 903 $ 3,017 $ 1,069 $ 1,218 Acquired with credit impairment — 222 829 253 Collectively evaluated for impairment 232,409 478,734 235,523 231,758 Total $ 233,312 $ 481,973 $ 237,421 $ 233,229 1-4 Family HELOC Consumer Other Total Allowance for loan losses Individually evaluated for impairment $ — $ — $ — $ 89 Acquired with credit impairment — — — — Collectively evaluated for impairment 686 188 36 11,577 Total $ 686 $ 188 $ 36 $ 11,666 Loans Individually evaluated for impairment $ 296 $ — $ — $ 6,503 Acquired with credit impairment — — — 1,304 Collectively evaluated for impairment 94,140 18,881 13,338 1,304,783 Total $ 94,436 $ 18,881 $ 13,338 $ 1,312,590 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 Real Estate 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 Risk characteristics relevant to each portfolio segment are as follows: Commercial, industrial and agricultural: The commercial, industrial and agricultural loan portfolio segment includes 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, industrial and agricultural 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. NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Multi-family and commercial real estate: Multi-family and commercial real estate and multi-family loans are subject to underwriting standards and processes similar to commercial, industrial and agricultural 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. 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 substantial 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. 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 impact the depth of potential losses in this portfolio segment. NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) 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 impact 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 at June 30, 2019 and December 31, 2018 : June 30, 2019 December 31, 2018 Commercial, Industrial and Agricultural $ 314 $ 279 Multi-family and Commercial Real Estate 811 — Construction, Land Development and Farmland 387 1,294 1-4 Family Residential Real Estate 1,187 2,556 1-4 Family HELOC 296 — Consumer 50 65 Total $ 3,045 $ 4,194 Performing non-accrual loans totaled $1,578 and $2,010 at June 30, 2019 and December 31, 2018 , respectively. NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Individually impaired loans by class of loans were as follows at June 30, 2019 : Unpaid Principal Balance Recorded Investment with no Allowance Recorded Recorded Investment with Allowance Recorded Total Recorded Investment Related Allowance Commercial, Industrial and Agricultural $ 904 $ 589 $ 314 $ 903 $ 72 Multi-family and Commercial Real Estate 3,513 3,239 — 3,239 — Construction, Land Development and Farmland 2,214 1,726 172 1,898 17 1-4 Family Residential Real Estate 1,685 1,471 — 1,471 — 1-4 Family HELOC 298 296 — 296 — Total $ 8,614 $ 7,321 $ 486 $ 7,807 $ 89 Individually impaired loans by class of loans were as follows at December 31, 2018 : Unpaid Principal Balance Recorded Investment with no Allowance Recorded Recorded Investment with Allowance Recorded Total Recorded Investment Related Allowance 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 — Consumer 29 23 — 23 — Total $ 9,109 $ 7,047 $ 425 $ 7,472 $ 55 The average balances of impaired loans for the six months ended June 30, 2019 and 2018 was as follows: 2019 2018 Commercial, Industrial and Agricultural $ 791 $ 3,040 Multi-family and Commercial Real Estate 2,548 3,010 Construction, Land Development and Farmland 2,747 5,083 1-4 Family Residential Real Estate 1,639 2,774 1-4 Family HELOC 99 90 Consumer 11 88 Total $ 7,835 $ 14,085 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) The Company utilizes a risk grading system to monitor the credit quality of the Company’s commercial loan portfolio which consists of commercial, industrial and agricultural, commercial real estate and construction loans. Loans are graded on a scale of 1 to 9. Grades 1 to 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. 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 exists 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 exists 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's 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. NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) 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 substandard. Substandard assets have a high probability of payment default, or they have other well-defined weaknesses. They require more intensive supervision 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. 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. Non-commercial 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 June 30, 2019 : Pass Special Mention Substandard Total Commercial, Industrial and Agricultural $ 231,448 $ 266 $ 1,598 $ 233,312 1-4 Family Residential Real Estate 231,538 — 1,691 233,229 1-4 Family HELOC 93,974 — 462 94,436 Multi-family and Commercial Real Estate 476,858 — 5,115 481,973 Construction, Land Development and Farmland 236,508 — 913 237,421 Consumer 18,624 — 257 18,881 Other 13,338 — — 13,338 Total $ 1,302,288 $ 266 $ 10,036 $ 1,312,590 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) 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 Past due status by class of loan was as follows at June 30, 2019 : 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Past Due Current Total Loans Commercial, Industrial and Agricultural $ 170 $ — $ 301 $ 471 $ 232,841 $ 233,312 1-4 Family Residential Real Estate 680 516 67 1,263 231,966 233,229 1-4 Family HELOC 120 — — 120 94,316 94,436 Multi-family and Commercial Real Estate 1,064 — — 1,064 480,909 481,973 Construction, Land Development and Farmland 1 — 171 172 237,249 237,421 Consumer 12 10 7 29 18,852 18,881 Other — — — — 13,338 13,338 Total $ 2,047 $ 526 $ 546 $ 3,119 $ 1,309,471 $ 1,312,590 Past due status by class of loan was 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) There were two loans totaling $22 past due 90 days or more and still accruing interest at June 30, 2019 . There was one loan totaling $6 past due 90 days or more and still accruing interest at December 31, 2018 . During the six months ended June 30, 2019, there were no loans that were modified to troubled debt restructurings. One previously disclosed troubled debt restructuring with a principal balance of $89 , was paid in full during the six months ended June 30, 2019. The following table presents loans by class modified as troubled debt restructurings that occurred during the first six months of 2018 : Number of Contracts Pre-Modification Outstanding Recorded Investments Post-Modification Outstanding Recorded Investments June 30, 2018 1-4 Family Residential 1 $ 1,254 $ 1,254 Total 1 $ 1,254 $ 1,254 The modification that occurred during the six months ended June 30, 2018, consisted of an interest only monthly payment restructure and had no effect on the allowance for loan losses or interest income. 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 all contractually required payments would not be collected. The outstanding balance and carrying amount of the purchased credit impaired loans were as follows at June 30, 2019 and December 31, 2018 : June 30, 2019 December 31, 2018 Commercial, Industrial and Agricultural $ — $ 63 Multi-family and Commercial Real Estate 224 233 Construction, Land Development and Farmland 1,037 1,958 1-4 Family Residential Real Estate 315 324 Consumer — 18 Total outstanding balance 1,576 2,596 Less remaining purchase discount 272 300 Allowance for loan losses — — Carrying amount, net of allowance $ 1,304 $ 2,296 NOTE 3 - LOANS AND ALLOWANCE FOR LOAN LOSSES (CONTINUED) Activity related to the accretable portion of the purchase discount on loans acquired with deteriorated credit quality is as follows for the quarters and six months ended June 30, 2019 and 2018 : 2019 2018 Balance at January 1, $ 110 $ — New loans purchased — 260 Loan charge offs — — Accretion income — (38 ) Balance at March 31, 110 222 New loans purchased — — Loan payoffs — (67 ) Loan charge offs (7 ) — Accretion income — (95 ) Balance at June 30, $ 103 $ 60

Other Real Estate

Other Real Estate	6 Months Ended
	Jun. 30, 2019
Banking and Thrift [Abstract]
OTHER REAL ESTATE	OTHER REAL ESTATE 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 sell which totaled $1,650 . Expenses related to other real estate totaled $15 and $13 for the six months ended June 30, 2019 and 2018 , respectively. At June 30, 2019 , there were four loans to one borrower, all cross-collateralized, with related balances totaling $48 , in the process of foreclosure. There was one 1-4 Family Residential property at June 30, 2019 , with a recorded balance of $848 related to other real estate.

Fair Values of Assets and Liabi

Fair Values of Assets and Liabilities	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
FAIR VALUES OF ASSETS AND LIABILITIES	FAIR VALUES OF ASSETS AND LIABILITIES 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; and • 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. NOTE 5 - FAIR VALUES OF ASSETS AND LIABILITIES (CONTINUED) 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. 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. 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 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 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 recurring basis, by level within the fair value hierarchy, as of June 30, 2019 and December 31, 2018 : Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) June 30, 2019 Assets U. S. Treasury and other U. S. government agencies $ 312 $ — $ 312 $ — State and municipal 220,614 — 220,614 — Corporate bonds 3,019 — 3,019 — Mortgage backed securities 37,508 — 37,508 — Asset backed securities 28,920 — 28,920 — Interest rate swaps 1 — 1 — Liabilities Interest rate swaps $ 3,576 $ — $ 3,576 $ — 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 swaps 467 — 467 — Liabilities Interest rate swaps $ 1,183 $ — $ 1,183 $ — 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 June 30, 2019 and December 31, 2018 : Fair Value Quoted Significant Significant June 30, 2019 Assets Impaired loans $ 397 $ — $ — $ 397 Other real estate owned 1,848 — — 1,848 December 31, 2018 Assets Impaired loans $ 370 $ — $ — $ 370 Other real estate owned 1,000 — — 1,000 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 June 30, 2019 and December 31, 2018 : 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 not reported at fair value at June 30, 2019 were as follows: Carrying Amount Estimated Fair Value Quoted Significant Significant Financial assets Cash and due from banks $ 35,917 $ 35,917 $ 35,917 $ — $ — Federal funds sold 80 80 — 80 — Loans, net 1,301,019 1,288,697 — — 1,288,697 Mortgage loans held for sale 11,571 11,701 — 11,701 — Accrued interest receivable 7,246 7,246 — 7,246 — Restricted equity securities 11,488 11,488 — 11,488 — Financial liabilities Deposits $ 1,550,280 $ 1,551,492 $ — $ — $ 1,551,492 Accrued interest payable 967 967 — 967 — Subordinate debentures 11,644 12,261 — — 12,261 Federal Home Loan Bank advances 11,119 11,133 — — 11,133 Carrying amounts and estimated fair values of financial instruments not reported at fair value at December 31, 2018 were as follows: Carrying Estimated Quoted Significant Significant 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 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, federal funds sold or purchased, demand deposits, and variable rate loans or deposits that re-price frequently and fully. For fixed rate loans or deposits and for variable rate loans or deposits with infrequent re-pricing or re-pricing 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 discounted cash flows using current rates for similar financing.

Stock-based Compensation

Stock-based Compensation	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION Stock Option Plan In 2006, the Board of Directors and shareholders of the Bank (then known as "Commerce Union Bank") approved the Commerce Union Bank Stock Option Plan (the “Plan”). The Plan provided for the granting of stock options, and authorized the issuance of common stock upon the exercise of such options, for up to 625,000 shares of common stock to employees and organizers. As part of the Bank's reorganization into a holding company corporate structure in 2012, all Bank options were replaced with Commerce Union Bancshares, Inc. (now known as "Reliant Bancorp, 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 (the “A&R Plan”) that permits the grant of awards with respect to up to 1,250,000 shares of Company common stock in the form of stock options. As part of the merger of Commerce Bank and Reliant Bank, all outstanding stock options of Reliant Bank were converted to stock options of Commerce Union Bancshares, Inc. (now known as "Reliant Bancorp, Inc.") under the A&R Plan. Under the A&R 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 10 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 A&R Plan for the six months ended June 30, 2019 is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at January 1, 2019 159,260 $ 16.72 6.04 years $ 1,146 Granted 1,000 $ 22.67 Exercised (26,706) $ 13.14 Forfeited or expired (2,753) $ 19.34 Outstanding at June 30, 2019 130,801 $ 17.44 6.22 years $ 924 Exercisable at June 30, 2019 64,201 $ 13.75 4.66 years $ 636 Shares Weighted Average Grant-Date Fair Value Non-vested options at January 1, 2019 71,200 $5.28 Granted 1,000 $6.57 Vested (2,847 ) $4.24 Forfeited (2,753 ) $4.89 Non-vested options at June 30, 2019 66,600 $5.36 NOTE 6 - STOCK-BASED COMPENSATION (CONTINUED) Stock Option Plan, Continued As of June 30, 2019 , there was $259 of unrecognized future compensation expense to be recognized related to stock options. Equity Incentive Plan On June 18, 2015, the shareholders of Commerce Union Bancshares, Inc. (now known as "Reliant Bancorp, Inc.") approved the Commerce Union Bancshares, Inc. 2015 Equity Incentive Plan, which reserves up to 900,000 shares of common stock to be subject to awards under the plan, including awards in the form of stock options, restricted stock grants, performance-based awards, and other awards denominated or payable by reference to or based on or related to common stock. The following table shows the activity related to non-vested restricted stock for the six months ended June 30, 2019 : Shares Weighted Average Grant-Date Non-vested shares at January 1, 2019 110,660 $ 24.28 Granted 8,000 21.94 Vested — — Forfeited (7,750 ) 23.25 Non-vested shares at June 30, 2019 110,910 $ 24.19 The restricted shares vest over periods ranging from one to three years . As of June 30, 2019 , there was $1,250 of unrecognized compensation cost related to non-vested restricted share awards.

Regulatory Capital Requirements

Regulatory Capital Requirements	6 Months Ended
	Jun. 30, 2019
Banking and Thrift [Abstract]
REGULATORY CAPITAL REQUIREMENTS	REGULATORY CAPITAL REQUIREMENTS The Bank is subject to regulatory capital requirements administered by the federal and state banking agencies. The Company meets the Small Bank Holding Company regulatory exemption limit presently set at three billion in total assets. 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 as of June 30, 2019 , the Bank meets all capital adequacy requirements to which it is 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 only 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 June 30, 2019 and December 31, 2018 , the most recent regulatory notifications categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the institution’s category. In July 2013, the Federal Deposit Insurance Corporation (FDIC) approved final rules that substantially amended the regulatory risk-based capital rules applicable to the Company and the Bank. The final rules implement the regulatory capital reforms of the Basel Committee on Banking Supervision reflected in “Basel III: A Global Framework for More Resilient Banks and Banking Systems” ("Basel III") and changes required by the Dodd-Frank Wall Street Reform and Consumer Protection Act. NOTE 7 - REGULATORY CAPITAL REQUIREMENTS (CONTINUED) Under these rules, the leverage and risk-based capital ratios of bank holding companies may not be lower than the leverage and risk-based capital ratios for insured depository institutions. The final rules implementing Basel III became effective on January 1, 2015, and include new minimum risk-based capital and leverage ratios and a new common equity tier 1 ratio. In addition, these rules refine the definition of what constitutes capital for purposes of calculating those ratios, including the definitions of Tier 1 capital and Tier 2 capital. Basel III establishes a “capital conservation buffer” of 2.5% which began phasing in on January 1, 2016, at a rate of 0.625% per year. The buffer became fully phased in on January 1, 2019. An institution is subject to limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses if capital levels fall below minimum levels plus the buffer. Capital amounts and ratios for the Company and the Bank (required) are presented below as of June 30, 2019 and December 31, 2018 . Actual Regulatory Capital Minimum Required Capital Including Capital Conservation Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio June 30, 2019 Company Tier I leverage $ 168,218 9.81 % $ 68,590 4.000 % $ 85,738 5.000 % Common equity tier 1 156,574 10.93 % 100,276 7.000 % 93,114 6.500 % Tier I risk-based capital 168,218 11.75 % 121,690 8.500 % 114,531 8.000 % Total risk-based capital 180,309 12.59 % 150,377 10.500 % 143,216 10.000 % Bank Tier I leverage $ 164,042 9.58 % $ 68,492 4.000 % $ 85,615 5.000 % Common equity tier 1 164,042 11.48 % 100,020 7.000 % 92,875 6.500 % Tier I risk-based capital 164,042 11.48 % 121,452 8.500 % 114,308 8.000 % Total risk-based capital 176,133 12.33 % 150,029 10.500 % 142,885 10.000 % December 31, 2018 Company Tier I leverage $ 168,876 10.38 % $ 65,077 4.000 % $ 81,347 5.000 % Common equity tier 1 157,273 11.59 % 86,507 6.375 % 88,203 6.500 % Tier I risk-based capital 168,876 12.44 % 106,905 7.875 % 108,602 8.000 % Total risk-based capital 180,193 13.28 % 133,991 9.875 % 135,688 10.000 % Bank Tier I leverage $ 165,308 10.17 % $ 65,018 4.000 % $ 81,272 5.000 % Common equity tier 1 165,308 12.19 % 86,451 6.375 % 88,146 6.500 % Tier I risk-based capital 165,308 12.19 % 106,792 7.875 % 108,488 8.000 % Total risk-based capital 176,625 13.02 % 133,961 9.875 % 135,657 10.000 %

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2019
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"): Three Months Ended Six Months Ended June 30, June 30, 2019 2018 2019 2018 Basic EPS Computation Net income attributable to common shareholders $ 4,239 $ 2,139 $ 8,063 $ 5,880 Weighted average common shares outstanding 11,196,898 11,396,829 11,300,095 11,389,634 Basic earnings per common share $ 0.38 $ 0.19 $ 0.71 $ 0.52 Diluted EPS Computation Net income attributable to common shareholders $ 4,239 $ 2,139 $ 8,063 $ 5,880 Weighted average common shares outstanding 11,196,898 11,396,829 11,300,095 11,389,634 Dilutive effect of stock options, restricted shares and employee stock purchase plan 89,729 98,404 78,300 96,838 Adjusted weighted average common shares outstanding 11,286,627 11,495,233 11,378,395 11,486,472 Diluted earnings per common share $ 0.38 $ 0.19 $ 0.71 $ 0.51

Segment Reporting

Segment Reporting	6 Months Ended
	Jun. 30, 2019
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 sold to participating banks or other investor groups and are underwritten to their standards. During the second quarter of 2019, RMV began acquiring loans from approved correspondent lenders and reselling them in the secondary market. These loans are not FNMA or FHLMC qualified loans, and are of higher risk, such as, jumbo loans or senior position home equity lines of credit. NOTE 9 - SEGMENT REPORTING (CONTINUED) The following presents summarized results of operations for the Company’s business segments for the periods indicated: Three Months Ended Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 13,703 $ 110 $ — $ 13,813 Provision for loan losses 200 — — 200 Noninterest income 1,473 1,235 (10 ) 2,698 Noninterest expense (excluding merger expense) 10,129 2,996 — 13,125 Merger expense 1 — — 1 Income tax expense (benefit) 607 (106 ) — 501 Net income (loss) 4,239 (1,545 ) (10 ) 2,684 Noncontrolling interest in net loss of subsidiary — 1,545 10 1,555 Net income attributable to common shareholders $ 4,239 $ — $ — $ 4,239 Three Months Ended Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 13,190 $ 214 $ — $ 13,404 Provision for loan losses 300 — — 300 Noninterest income 1,299 993 (38 ) 2,254 Noninterest expense (excluding merger expense) 9,389 2,169 — 11,558 Merger expense 2,483 — — 2,483 Income tax expense (benefit) 178 (63 ) — 115 Net income (loss) 2,139 (899 ) (38 ) 1,202 Noncontrolling interest in net loss of subsidiary — 899 38 937 Net income attributable to common shareholders $ 2,139 $ — $ — $ 2,139 NOTE 9 - SEGMENT REPORTING (CONTINUED) Six Months Ended Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 27,076 $ 198 $ — $ 27,274 Provision for loan losses 200 — — 200 Noninterest income 2,851 1,810 (25 ) 4,636 Noninterest expense (excluding merger expense) 20,574 5,295 — 25,869 Merger expense 3 — — 3 Income tax expense (benefit) 1,087 (214 ) — 873 Net income (loss) 8,063 (3,073 ) (25 ) 4,965 Noncontrolling interest in net loss of subsidiary — 3,073 25 3,098 Net income attributable to common shareholders $ 8,063 $ — $ — $ 8,063 Six Months Ended Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 26,234 $ 552 $ — $ 26,786 Provision for loan losses 437 — — 437 Noninterest income 2,587 2,741 (83 ) 5,245 Noninterest expense (excluding merger expense) 18,840 4,703 — 23,543 Merger expense 2,660 — — 2,660 Income tax expense (benefit) 1,004 (92 ) — 912 Net income 5,880 (1,318 ) (83 ) 4,479 Noncontrolling interest in net income of subsidiary — 1,318 83 1,401 Net income attributable to common shareholders $ 5,880 $ — $ — $ 5,880

Derivatives

Derivatives	6 Months Ended
	Jun. 30, 2019
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. NOTE 10 - DERIVATIVES (CONTINUED) Interest Rate Swaps Designated as Cash Flow Hedges Interest rate swaps with notional amounts totaling $60,000 as of June 30, 2019 were designated as cash flow hedges of certain short-term interest bearing liabilities 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. Summary information related to the interest rate swaps designated as cash flow hedges as of June 30, 2019 , is as follows: Notional amounts $ 60,000 Weighted average pay rates 3.338 % Weighted average receive rates 3.060 % Weighted average maturity 3.97 years Unrealized losses $ 2,955 Cash Flow Hedges The following table presents the net gains (losses) recorded in accumulated other comprehensive income and the Consolidated Statements of Income relating to the cash flow derivative instruments for the period 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) June 30, 2019 Interest rate contracts $ (1,802 ) $ — $ — The following table reflects the cash flow hedges included in the Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018 , respectively: June 30, 2019 December 31, 2018 Notional Amount Fair Value Notional Amount Fair Value Included in other liabilities: Interest rate swaps related to: Subordinate debentures $ 10,000 $ 475 $ 10,000 $ 174 Short-term interest bearing liabilities 50,000 2,480 50,000 979 Total included in other liabilities $ 60,000 $ 2,955 $ 60,000 $ 1,153 NOTE 10 - DERIVATIVES (CONTINUED) Fair Value Hedges The following table reflects the fair value hedges included in the Consolidated Statements of Income for the six months ended June 30, 2019 and 2018 , respectively: Interest rate contracts Location June 30, 2019 June 30, 2018 Change in fair value on interest rate swaps hedging investments Interest income $ (1,057 ) $ 255 The following table reflects the fair value hedges included in the Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018 , respectively: June 30, 2019 December 31, 2018 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Interest rate swaps related to investments $ 1,000 $ 1 $ 16,902 $ 467 Total included in other assets $ 1,000 $ 1 $ 16,902 $ 467 Included in other liabilities: Interest rate swaps related to investments 19,605 621 4,203 30 Total included in other liabilities $ 19,605 $ 621 $ 4,203 $ 30

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Income tax expense totaled $501 in the second quarter of 2019 as compared to $115 in the second quarter of 2018 and $873 and $912 for the six months ended June 30, 2019 and 2018 , respectively. The effective tax rate for the three months ended June 30, 2019 and 2018 was 16% and 9% , respectively. The increase in the effective tax rate for the three months ended June 30, 2019 can be attributed to a decrease in tax-exempt securities. Merger expenses in the second quarter of 2018, had the impact of reducing taxable income and increasing the proportion of tax exempt income to total income. The effective tax rate for the six months ended June 30, 2019 and 2018 was 15% and 17% , respectively.

Business Combination

Business Combination	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
BUSINESS COMBINATION	BUSINESS COMBINATION Effective January 1, 2018, Pioneer Merger Sub, Inc., a wholly owned subsidiary of Reliant Bancorp, Inc., merged with and into Community First, with Community First continuing as the surviving corporation, and immediately thereafter Community First merged with and into Reliant Bancorp, Inc., with Reliant Bancorp, Inc. continuing as the surviving corporation. Pursuant to the merger agreement, each outstanding share of Community First common stock (except for excluded shares and dissenting shares) was converted into and canceled 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 expanded and further diversified the Company's market area. The following table details the financial impact of the business combination, 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 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 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 NOTE 12 - BUSINESS COMBINATION (CONTINUED) During 2018, as part of the system integration of Community First, 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.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2019
Accounting Changes and Error Corrections [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS Information about certain issued accounting standards updates is presented below. Also refer to Note 1 - Summary of Significant Accounting Policies “Recent Authoritative Accounting Guidance” in our Annual Report on Form 10-K for the year ended December 31, 2018 for additional information related to previously issued accounting standards updates. 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 adoption of this standard did not have a significant impact on the Company. 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 became effective for us on January 1, 2019 and did not have a significant impact on our financial statements. 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 $11,455 and a corresponding liability, using the remaining contractual lease periods. We also estimate the impact on regulatory capital of the Company to be a reduction of seven basis points to the Tier 1 leverage capital ratio. 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. NOTE 13 - RECENT ACCOUNTING PRONOUNCEMENTS (CONTINUED) 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 is expected to 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. 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 our financial statements. 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 the Company on January 1, 2021, with early adoption permitted, and is not expected to have a significant impact on our financial statements.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Operations	Nature of Operations Reliant Bank began organizational activities in 2005. Reliant Bancorp, Inc. provides financial services through its wholly owned bank subsidiary, Reliant Bank, which has 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.
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements have been prepared in accordance with instructions to Quarterly Report on Form 10-Q and therefore do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, and cash flows in conformity with U.S. GAAP. All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods covered by the report have been included. The accompanying unaudited consolidated financial statements should be read in conjunction with Reliant Bancorp, Inc.’s consolidated financial statements and related notes appearing in Reliant Bancorp, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2018 . The consolidated financial statements as of and for the periods presented include the accounts of Reliant Bancorp Inc., Reliant Bank (the "Bank"), Community First TRUPS Holding Company ("TRUPS"), which is wholly owned by Reliant Bancorp Inc., Reliant Investment Holdings, LLC ("Holdings"), which is wholly owned by the Bank, and Reliant Mortgage Ventures, LLC ("RMV"), of which the Bank controls 51% of the governance rights. Reliant Bancorp Inc., the Bank, TRUPS, Holdings and RMV, are, collectively, referred to herein as the “Company”. All significant inter-company balances and transactions have been eliminated in consolidation. As described in Note 12 to these unaudited consolidated financial statements, Reliant Bancorp, Inc. and Community First, Inc. ("Community First") merged effective on January 1, 2018. The accounting and reporting policies of the Company conform to U.S. GAAP and general practices in the banking industry.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP 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. NOTE 1 - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED) Use of Estimates (Continued) The consolidated financial statements as of June 30, 2019 , and for the three and six months ended June 30, 2019 and 2018 , included herein have not been audited. The accounting and reporting policies of the Company conform to U.S. GAAP and Article 8 of Regulation S-X. Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission, although the Company believes that the disclosures made are adequate to make the information not misleading. The accompanying consolidated financial statements reflect all adjustments, which are, in the opinion of management, necessary to present a fair statement of the results for the interim periods presented. Such adjustments are of a normal recurring nature. The Company evaluates subsequent events through the date of filing. Certain prior period amounts have been reclassified to conform to the current period presentation. The results for the three and six months ended June 30, 2019 are not necessarily indicative of the results that may be expected for the year ending December 31, 2019 .
Reclassifications	Reclassifications Certain reclassifications were made to the June 30, 2018 financial statement presentation in order to conform to the June 30, 2019 financial statement presentation. Total stockholders' equity and net income are unchanged due to these reclassifications.

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2019
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 at June 30, 2019 and December 31, 2018 were as follows: June 30, 2019 Amortized Gross Gross Estimated U. S. Treasury and other U. S. government agencies $ 313 $ — $ (1 ) $ 312 State and municipal 212,157 8,540 (83 ) 220,614 Corporate bonds 3,130 2 (113 ) 3,019 Mortgage backed securities 37,515 190 (197 ) 37,508 Asset backed securities 29,430 12 (522 ) 28,920 Total $ 282,545 $ 8,744 $ (916 ) $ 290,373 December 31, 2018 Amortized Gross Gross Estimated 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
Fair Value of Available for Sale Maturities by Contractual Maturity	The fair value of available for sale debt securities at June 30, 2019 by contractual maturity are provided below. Actual maturities may differ from contractual maturities for mortgage and asset backed securities since the underlying asset may be called or prepaid with or without penalty. Securities not due at a single maturity date are shown separately. Amortized Cost Estimated Fair Value Due within one year $ 660 $ 663 Due in one to five years 938 935 Due in five to ten years 7,240 7,400 Due after ten years 206,762 214,947 Mortgage backed securities 37,515 37,508 Asset backed securities 29,430 28,920 Total $ 282,545 $ 290,373
Securities in Unrealized Loss Position	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 have been in a continuous unrealized loss position as of June 30, 2019 : Less than 12 months 12 months or more Total Estimated Fair Value Unrealized Loss Estimated Unrealized Estimated Unrealized Description of Securities U. S. Treasury and other U. S. government agencies $ — $ — $ 249 $ 1 $ 249 $ 1 State and municipal — — 9,611 83 9,611 83 Corporate bonds — — 2,517 113 2,517 113 Mortgage backed securities 9,706 127 5,200 70 14,906 197 Asset backed securities 2,100 6 24,704 516 26,804 522 Total temporarily impaired $ 11,806 $ 133 $ 42,281 $ 783 $ 54,087 $ 916 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 have been in a continuous unrealized loss position as of December 31, 2018 : Less than 12 months 12 months or more Total Estimated Unrealized Estimated Unrealized Estimated Unrealized Description of Securities 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

Loans and Allowance for Loan _2

Loans and Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2019
Receivables [Abstract]
Summary of Loans and Allowance for Loan Losses	Loans at June 30, 2019 and December 31, 2018 were comprised as follows: June 30, 2019 December 31, 2018 Commercial, Industrial and Agricultural $ 233,312 $ 213,850 Real Estate 1-4 Family Residential 233,229 225,863 1-4 Family HELOC 94,436 88,112 Multi-family and Commercial 481,973 447,840 Construction, Land Development and Farmland 237,421 220,801 Consumer 18,881 20,495 Other 13,338 14,106 Total 1,312,590 1,231,067 Less Deferred loan fees (cost) (95 ) (9 ) Allowance for possible loan losses 11,666 10,892 Loans, net $ 1,301,019 $ 1,220,184
Activity in the Allowance for Loan Losses By Portfolio Segment	Activity in the allowance for loan losses by portfolio segment was as follows for the six months ended June 30, 2019 : Commercial Industrial and Agricultural Multi-family and Commercial Real Estate Construction Land Development and Farmland 1-4 Family Residential Real Estate Beginning balance $ 1,751 $ 4,429 $ 2,500 $ 1,333 Charge-offs (168 ) — — (17 ) Recoveries 294 59 201 216 Provision 4 225 6 (77 ) Ending balance $ 1,881 $ 4,713 $ 2,707 $ 1,455 1-4 Family HELOC Consumer Other Total Beginning balance $ 656 $ 184 $ 39 $ 10,892 Charge-offs — (21 ) (13 ) (219 ) Recoveries 11 12 — 793 Provision 19 13 10 200 Ending balance $ 686 $ 188 $ 36 $ 11,666 Activity in the allowance for loan losses by portfolio segment was as follows for the six months ended June 30, 2018 : Commercial Industrial and Agricultural Multi-family and Commercial Real Estate Construction Land Development and Farmland 1-4 Family Residential Real Estate Beginning balance $ 2,538 $ 3,166 $ 2,434 $ 773 Charge-offs (308 ) — (140 ) (8 ) Recoveries 425 3 44 11 Provision (970 ) 692 177 469 Ending balance $ 1,685 $ 3,861 $ 2,515 $ 1,245 1-4 Family HELOC Consumer Other Total Beginning balance $ 595 $ 183 $ 42 $ 9,731 Charge-offs (6 ) (24 ) (22 ) (508 ) Recoveries 5 18 3 509 Provision 42 15 12 437 Ending balance $ 636 $ 192 $ 35 $ 10,169
Schedule of Allowance for Credit Losses and Recorded Investments in Loans By Portfolio and By Impairment Method	The allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method as of June 30, 2019 was as follows: Commercial Industrial and Agricultural Multi-family and Commercial Real Estate Construction Land Development and Farmland 1-4 Family Residential Real Estate Allowance for loan losses Individually evaluated for impairment $ 72 $ — $ 17 $ — Acquired with credit impairment — — — — Collectively evaluated for impairment 1,809 4,713 2,690 1,455 Total $ 1,881 $ 4,713 $ 2,707 $ 1,455 Loans Individually evaluated for impairment $ 903 $ 3,017 $ 1,069 $ 1,218 Acquired with credit impairment — 222 829 253 Collectively evaluated for impairment 232,409 478,734 235,523 231,758 Total $ 233,312 $ 481,973 $ 237,421 $ 233,229 1-4 Family HELOC Consumer Other Total Allowance for loan losses Individually evaluated for impairment $ — $ — $ — $ 89 Acquired with credit impairment — — — — Collectively evaluated for impairment 686 188 36 11,577 Total $ 686 $ 188 $ 36 $ 11,666 Loans Individually evaluated for impairment $ 296 $ — $ — $ 6,503 Acquired with credit impairment — — — 1,304 Collectively evaluated for impairment 94,140 18,881 13,338 1,304,783 Total $ 94,436 $ 18,881 $ 13,338 $ 1,312,590 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 Real Estate 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
Non-Accrual Loans By Class of Loan	Non-accrual loans by class of loan were as follows at June 30, 2019 and December 31, 2018 : June 30, 2019 December 31, 2018 Commercial, Industrial and Agricultural $ 314 $ 279 Multi-family and Commercial Real Estate 811 — Construction, Land Development and Farmland 387 1,294 1-4 Family Residential Real Estate 1,187 2,556 1-4 Family HELOC 296 — Consumer 50 65 Total $ 3,045 $ 4,194
Individually Impaired Loans by Class of Loans	Individually impaired loans by class of loans were as follows at June 30, 2019 : Unpaid Principal Balance Recorded Investment with no Allowance Recorded Recorded Investment with Allowance Recorded Total Recorded Investment Related Allowance Commercial, Industrial and Agricultural $ 904 $ 589 $ 314 $ 903 $ 72 Multi-family and Commercial Real Estate 3,513 3,239 — 3,239 — Construction, Land Development and Farmland 2,214 1,726 172 1,898 17 1-4 Family Residential Real Estate 1,685 1,471 — 1,471 — 1-4 Family HELOC 298 296 — 296 — Total $ 8,614 $ 7,321 $ 486 $ 7,807 $ 89 Individually impaired loans by class of loans were as follows at December 31, 2018 : Unpaid Principal Balance Recorded Investment with no Allowance Recorded Recorded Investment with Allowance Recorded Total Recorded Investment Related Allowance 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 — Consumer 29 23 — 23 — Total $ 9,109 $ 7,047 $ 425 $ 7,472 $ 55
Average Balances of Impaired Loans	The average balances of impaired loans for the six months ended June 30, 2019 and 2018 was as follows: 2019 2018 Commercial, Industrial and Agricultural $ 791 $ 3,040 Multi-family and Commercial Real Estate 2,548 3,010 Construction, Land Development and Farmland 2,747 5,083 1-4 Family Residential Real Estate 1,639 2,774 1-4 Family HELOC 99 90 Consumer 11 88 Total $ 7,835 $ 14,085
Credit Quality Indicators By Class of Loan	Credit quality indicators by class of loan were as follows at June 30, 2019 : Pass Special Mention Substandard Total Commercial, Industrial and Agricultural $ 231,448 $ 266 $ 1,598 $ 233,312 1-4 Family Residential Real Estate 231,538 — 1,691 233,229 1-4 Family HELOC 93,974 — 462 94,436 Multi-family and Commercial Real Estate 476,858 — 5,115 481,973 Construction, Land Development and Farmland 236,508 — 913 237,421 Consumer 18,624 — 257 18,881 Other 13,338 — — 13,338 Total $ 1,302,288 $ 266 $ 10,036 $ 1,312,590 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
Past Due Status By Class of Loan	Past due status by class of loan was as follows at June 30, 2019 : 30-59 Days Past Due 60-89 Days Past Due 90+ Days Past Due Total Past Due Current Total Loans Commercial, Industrial and Agricultural $ 170 $ — $ 301 $ 471 $ 232,841 $ 233,312 1-4 Family Residential Real Estate 680 516 67 1,263 231,966 233,229 1-4 Family HELOC 120 — — 120 94,316 94,436 Multi-family and Commercial Real Estate 1,064 — — 1,064 480,909 481,973 Construction, Land Development and Farmland 1 — 171 172 237,249 237,421 Consumer 12 10 7 29 18,852 18,881 Other — — — — 13,338 13,338 Total $ 2,047 $ 526 $ 546 $ 3,119 $ 1,309,471 $ 1,312,590 Past due status by class of loan was 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
Loans By Class Modified as Troubled Debt Restructurings	The following table presents loans by class modified as troubled debt restructurings that occurred during the first six months of 2018 : Number of Contracts Pre-Modification Outstanding Recorded Investments Post-Modification Outstanding Recorded Investments June 30, 2018 1-4 Family Residential 1 $ 1,254 $ 1,254 Total 1 $ 1,254 $ 1,254
Outstanding Balance And Carrying Amount of the Purchased Credit Impaired Loans	The outstanding balance and carrying amount of the purchased credit impaired loans were as follows at June 30, 2019 and December 31, 2018 : June 30, 2019 December 31, 2018 Commercial, Industrial and Agricultural $ — $ 63 Multi-family and Commercial Real Estate 224 233 Construction, Land Development and Farmland 1,037 1,958 1-4 Family Residential Real Estate 315 324 Consumer — 18 Total outstanding balance 1,576 2,596 Less remaining purchase discount 272 300 Allowance for loan losses — — Carrying amount, net of allowance $ 1,304 $ 2,296
Activity Related to Accretable Portion of the Purchase Discount on Loans Acquired With Deteriorated Credit Quality	Activity related to the accretable portion of the purchase discount on loans acquired with deteriorated credit quality is as follows for the quarters and six months ended June 30, 2019 and 2018 : 2019 2018 Balance at January 1, $ 110 $ — New loans purchased — 260 Loan charge offs — — Accretion income — (38 ) Balance at March 31, 110 222 New loans purchased — — Loan payoffs — (67 ) Loan charge offs (7 ) — Accretion income — (95 ) Balance at June 30, $ 103 $ 60

Fair Values of Assets and Lia_2

Fair Values of Assets and Liabilities (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on a Recurring and Nonrecurring Basis	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 June 30, 2019 and December 31, 2018 : Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) June 30, 2019 Assets U. S. Treasury and other U. S. government agencies $ 312 $ — $ 312 $ — State and municipal 220,614 — 220,614 — Corporate bonds 3,019 — 3,019 — Mortgage backed securities 37,508 — 37,508 — Asset backed securities 28,920 — 28,920 — Interest rate swaps 1 — 1 — Liabilities Interest rate swaps $ 3,576 $ — $ 3,576 $ — 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 swaps 467 — 467 — Liabilities Interest rate swaps $ 1,183 $ — $ 1,183 $ — 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 June 30, 2019 and December 31, 2018 : Fair Value Quoted Significant Significant June 30, 2019 Assets Impaired loans $ 397 $ — $ — $ 397 Other real estate owned 1,848 — — 1,848 December 31, 2018 Assets Impaired loans $ 370 $ — $ — $ 370 Other real estate owned 1,000 — — 1,000
Level 3 input information for Assets Measured at Fair Value on a Nonrecurring Basis	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 June 30, 2019 and December 31, 2018 : 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.
Carrying Amounts And Estimated Fair Values of Financial instruments Not Reported at Fair Value	Carrying amounts and estimated fair values of financial instruments not reported at fair value at June 30, 2019 were as follows: Carrying Amount Estimated Fair Value Quoted Significant Significant Financial assets Cash and due from banks $ 35,917 $ 35,917 $ 35,917 $ — $ — Federal funds sold 80 80 — 80 — Loans, net 1,301,019 1,288,697 — — 1,288,697 Mortgage loans held for sale 11,571 11,701 — 11,701 — Accrued interest receivable 7,246 7,246 — 7,246 — Restricted equity securities 11,488 11,488 — 11,488 — Financial liabilities Deposits $ 1,550,280 $ 1,551,492 $ — $ — $ 1,551,492 Accrued interest payable 967 967 — 967 — Subordinate debentures 11,644 12,261 — — 12,261 Federal Home Loan Bank advances 11,119 11,133 — — 11,133 Carrying amounts and estimated fair values of financial instruments not reported at fair value at December 31, 2018 were as follows: Carrying Estimated Quoted Significant Significant 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

Stock-based Compensation (Table

Stock-based Compensation (Tables)	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Share-based Compensation, Stock Options, Activity	A summary of the activity in the A&R Plan for the six months ended June 30, 2019 is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value Outstanding at January 1, 2019 159,260 $ 16.72 6.04 years $ 1,146 Granted 1,000 $ 22.67 Exercised (26,706) $ 13.14 Forfeited or expired (2,753) $ 19.34 Outstanding at June 30, 2019 130,801 $ 17.44 6.22 years $ 924 Exercisable at June 30, 2019 64,201 $ 13.75 4.66 years $ 636
Schedule of Nonvested Share Activity	Shares Weighted Average Grant-Date Fair Value Non-vested options at January 1, 2019 71,200 $5.28 Granted 1,000 $6.57 Vested (2,847 ) $4.24 Forfeited (2,753 ) $4.89 Non-vested options at June 30, 2019 66,600 $5.36
Activity Related to Non-Vested Restricted Stock	The following table shows the activity related to non-vested restricted stock for the six months ended June 30, 2019 : Shares Weighted Average Grant-Date Non-vested shares at January 1, 2019 110,660 $ 24.28 Granted 8,000 21.94 Vested — — Forfeited (7,750 ) 23.25 Non-vested shares at June 30, 2019 110,910 $ 24.19

Regulatory Capital Requiremen_2

Regulatory Capital Requirements (Tables)	6 Months Ended
	Jun. 30, 2019
Banking and Thrift [Abstract]
Actual and Required Capital Amounts and Ratios	apital amounts and ratios for the Company and the Bank (required) are presented below as of June 30, 2019 and December 31, 2018 . Actual Regulatory Capital Minimum Required Capital Including Capital Conservation Buffer To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio June 30, 2019 Company Tier I leverage $ 168,218 9.81 % $ 68,590 4.000 % $ 85,738 5.000 % Common equity tier 1 156,574 10.93 % 100,276 7.000 % 93,114 6.500 % Tier I risk-based capital 168,218 11.75 % 121,690 8.500 % 114,531 8.000 % Total risk-based capital 180,309 12.59 % 150,377 10.500 % 143,216 10.000 % Bank Tier I leverage $ 164,042 9.58 % $ 68,492 4.000 % $ 85,615 5.000 % Common equity tier 1 164,042 11.48 % 100,020 7.000 % 92,875 6.500 % Tier I risk-based capital 164,042 11.48 % 121,452 8.500 % 114,308 8.000 % Total risk-based capital 176,133 12.33 % 150,029 10.500 % 142,885 10.000 % December 31, 2018 Company Tier I leverage $ 168,876 10.38 % $ 65,077 4.000 % $ 81,347 5.000 % Common equity tier 1 157,273 11.59 % 86,507 6.375 % 88,203 6.500 % Tier I risk-based capital 168,876 12.44 % 106,905 7.875 % 108,602 8.000 % Total risk-based capital 180,193 13.28 % 133,991 9.875 % 135,688 10.000 % Bank Tier I leverage $ 165,308 10.17 % $ 65,018 4.000 % $ 81,272 5.000 % Common equity tier 1 165,308 12.19 % 86,451 6.375 % 88,146 6.500 % Tier I risk-based capital 165,308 12.19 % 106,792 7.875 % 108,488 8.000 % Total risk-based capital 176,625 13.02 % 133,961 9.875 % 135,657 10.000 %

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Summary of the Components Comprising Basic and Diluted Earnings Per Share	The following is a summary of the components comprising basic and diluted earnings per common share of stock ("EPS"): Three Months Ended Six Months Ended June 30, June 30, 2019 2018 2019 2018 Basic EPS Computation Net income attributable to common shareholders $ 4,239 $ 2,139 $ 8,063 $ 5,880 Weighted average common shares outstanding 11,196,898 11,396,829 11,300,095 11,389,634 Basic earnings per common share $ 0.38 $ 0.19 $ 0.71 $ 0.52 Diluted EPS Computation Net income attributable to common shareholders $ 4,239 $ 2,139 $ 8,063 $ 5,880 Weighted average common shares outstanding 11,196,898 11,396,829 11,300,095 11,389,634 Dilutive effect of stock options, restricted shares and employee stock purchase plan 89,729 98,404 78,300 96,838 Adjusted weighted average common shares outstanding 11,286,627 11,495,233 11,378,395 11,486,472 Diluted earnings per common share $ 0.38 $ 0.19 $ 0.71 $ 0.51

Segment Reporting (Tables)

Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Reporting [Abstract]
Summarized Results of Operations by Business Segment	The following presents summarized results of operations for the Company’s business segments for the periods indicated: Three Months Ended Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 13,703 $ 110 $ — $ 13,813 Provision for loan losses 200 — — 200 Noninterest income 1,473 1,235 (10 ) 2,698 Noninterest expense (excluding merger expense) 10,129 2,996 — 13,125 Merger expense 1 — — 1 Income tax expense (benefit) 607 (106 ) — 501 Net income (loss) 4,239 (1,545 ) (10 ) 2,684 Noncontrolling interest in net loss of subsidiary — 1,545 10 1,555 Net income attributable to common shareholders $ 4,239 $ — $ — $ 4,239 Three Months Ended Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 13,190 $ 214 $ — $ 13,404 Provision for loan losses 300 — — 300 Noninterest income 1,299 993 (38 ) 2,254 Noninterest expense (excluding merger expense) 9,389 2,169 — 11,558 Merger expense 2,483 — — 2,483 Income tax expense (benefit) 178 (63 ) — 115 Net income (loss) 2,139 (899 ) (38 ) 1,202 Noncontrolling interest in net loss of subsidiary — 899 38 937 Net income attributable to common shareholders $ 2,139 $ — $ — $ 2,139 NOTE 9 - SEGMENT REPORTING (CONTINUED) Six Months Ended Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 27,076 $ 198 $ — $ 27,274 Provision for loan losses 200 — — 200 Noninterest income 2,851 1,810 (25 ) 4,636 Noninterest expense (excluding merger expense) 20,574 5,295 — 25,869 Merger expense 3 — — 3 Income tax expense (benefit) 1,087 (214 ) — 873 Net income (loss) 8,063 (3,073 ) (25 ) 4,965 Noncontrolling interest in net loss of subsidiary — 3,073 25 3,098 Net income attributable to common shareholders $ 8,063 $ — $ — $ 8,063 Six Months Ended Retail Banking Residential Mortgage Banking Elimination Entries Consolidated Net interest income $ 26,234 $ 552 $ — $ 26,786 Provision for loan losses 437 — — 437 Noninterest income 2,587 2,741 (83 ) 5,245 Noninterest expense (excluding merger expense) 18,840 4,703 — 23,543 Merger expense 2,660 — — 2,660 Income tax expense (benefit) 1,004 (92 ) — 912 Net income 5,880 (1,318 ) (83 ) 4,479 Noncontrolling interest in net income of subsidiary — 1,318 83 1,401 Net income attributable to common shareholders $ 5,880 $ — $ — $ 5,880

Derivatives (Tables)

Derivatives (Tables)	6 Months Ended
	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest Rate Swaps Designated as Cash Flow Hedges	Summary information related to the interest rate swaps designated as cash flow hedges as of June 30, 2019 , is as follows: Notional amounts $ 60,000 Weighted average pay rates 3.338 % Weighted average receive rates 3.060 % Weighted average maturity 3.97 years Unrealized losses $ 2,955
Net Gain (Losses) Related to Derivative Instruments	Cash Flow Hedges The following table presents the net gains (losses) recorded in accumulated other comprehensive income and the Consolidated Statements of Income relating to the cash flow derivative instruments for the period 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) June 30, 2019 Interest rate contracts $ (1,802 ) $ — $ — Fair Value Hedges The following table reflects the fair value hedges included in the Consolidated Statements of Income for the six months ended June 30, 2019 and 2018 , respectively: Interest rate contracts Location June 30, 2019 June 30, 2018 Change in fair value on interest rate swaps hedging investments Interest income $ (1,057 ) $ 255
Cash Flow Hedges Included in the Consolidated Balance Sheets	The following table reflects the cash flow hedges included in the Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018 , respectively: June 30, 2019 December 31, 2018 Notional Amount Fair Value Notional Amount Fair Value Included in other liabilities: Interest rate swaps related to: Subordinate debentures $ 10,000 $ 475 $ 10,000 $ 174 Short-term interest bearing liabilities 50,000 2,480 50,000 979 Total included in other liabilities $ 60,000 $ 2,955 $ 60,000 $ 1,153
Fair Value Hedging Included in the Consolidated Balance Sheets	The following table reflects the fair value hedges included in the Consolidated Balance Sheets as of June 30, 2019 and December 31, 2018 , respectively: June 30, 2019 December 31, 2018 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Interest rate swaps related to investments $ 1,000 $ 1 $ 16,902 $ 467 Total included in other assets $ 1,000 $ 1 $ 16,902 $ 467 Included in other liabilities: Interest rate swaps related to investments 19,605 621 4,203 30 Total included in other liabilities $ 19,605 $ 621 $ 4,203 $ 30

Business Combination (Tables)

Business Combination (Tables)	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Calculation and Allocation of Purchase Price	The following table details the financial impact of the business combination, 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 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 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

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details)	Jun. 30, 2019
Reliant Mortgage Ventures, LLC
Noncontrolling Interest [Line Items]
Governance rights control by the Bank (in percent)	51.00%

Securities - Available-for-sale

Securities - Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 282,545	$ 300,594
Gross Unrealized Gains	8,744	913
Gross Unrealized Losses	(916)	(5,184)
Estimated Fair Value	290,373	296,323
U. S. Treasury and other U. S. government agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	313	568
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1)	(14)
Estimated Fair Value	312	554
State and municipal
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	212,157	232,589
Gross Unrealized Gains	8,540	879
Gross Unrealized Losses	(83)	(4,170)
Estimated Fair Value	220,614	229,298
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,130	3,130
Gross Unrealized Gains	2	0
Gross Unrealized Losses	(113)	(113)
Estimated Fair Value	3,019	3,017
Mortgage backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	37,515	32,172
Gross Unrealized Gains	190	34
Gross Unrealized Losses	(197)	(248)
Estimated Fair Value	37,508	31,958
Asset backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	29,430	28,635
Gross Unrealized Gains	12	0
Gross Unrealized Losses	(522)	(639)
Estimated Fair Value	$ 28,920	27,996
Time deposits
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		3,500
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Estimated Fair Value		$ 3,500

Securities - Textual (Details)

Securities - Textual (Details) $ in Thousands	Jun. 30, 2019USD ($)security	Dec. 31, 2018USD ($)security
Investments, Debt and Equity Securities [Abstract]
Securities pledged, carrying amount | $	$ 59,682	$ 70,097
Number of securities of single issuer with book value greater than ten percent of stockholders' equity	0	0
Number of securities in unrealized loss position	69	242

Securities - Available-for-sa_2

Securities - Available-for-sale Securities Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Amortized Cost
Due within one year	$ 660
Due in one to five years	938
Due in five to ten years	7,240
Due after ten years	206,762
Amortized Cost	282,545	$ 300,594
Estimated Fair Value
Due within one year	663
Due in one to five years	935
Due in five to ten years	7,400
Due after ten years	214,947
Estimated Fair Value	290,373	296,323
Mortgage backed securities
Amortized Cost
Asset backed securities	37,515
Amortized Cost	37,515	32,172
Estimated Fair Value
Asset backed securities	37,508
Estimated Fair Value	37,508	31,958
Asset backed securities
Amortized Cost
Asset backed securities	29,430
Amortized Cost	29,430	28,635
Estimated Fair Value
Asset backed securities	28,920
Estimated Fair Value	$ 28,920	$ 27,996

Securities - Schedule of Tempor

Securities - Schedule of Temporary Impairment Losses, Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, estimated fair value	$ 11,806	$ 158,472
Less than 12 months, unrealized loss	133	2,850
12 months or more, estimated fair value	42,281	60,922
12 months or more, unrealized loss	783	2,334
Total, estimated fair value	54,087	219,394
Total, unrealized loss	916	5,184
U. S. Treasury and other U. S. government agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, estimated fair value	0	0
Less than 12 months, unrealized loss	0	0
12 months or more, estimated fair value	249	555
12 months or more, unrealized loss	1	14
Total, estimated fair value	249	555
Total, unrealized loss	1	14
State and municipal
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, estimated fair value	0	118,580
Less than 12 months, unrealized loss	0	2,263
12 months or more, estimated fair value	9,611	47,223
12 months or more, unrealized loss	83	1,907
Total, estimated fair value	9,611	165,803
Total, unrealized loss	83	4,170
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, estimated fair value	0	2,526
Less than 12 months, unrealized loss	0	105
12 months or more, estimated fair value	2,517	492
12 months or more, unrealized loss	113	8
Total, estimated fair value	2,517	3,018
Total, unrealized loss	113	113
Mortgage backed securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, estimated fair value	9,706	17,015
Less than 12 months, unrealized loss	127	99
12 months or more, estimated fair value	5,200	5,397
12 months or more, unrealized loss	70	149
Total, estimated fair value	14,906	22,412
Total, unrealized loss	197	248
Asset backed securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, estimated fair value	2,100	20,351
Less than 12 months, unrealized loss	6	383
12 months or more, estimated fair value	24,704	7,255
12 months or more, unrealized loss	516	256
Total, estimated fair value	26,804	27,606
Total, unrealized loss	$ 522	$ 639

Loans and Allowance for Loan _3

Loans and Allowance for Loan Losses - Schedule of Loans and Financial Receivables (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 1,312,590	$ 1,231,067
Deferred loan fees (cost)	(95)	(9)
Allowance for possible loan losses	11,666	10,892	$ 10,169	$ 9,731
Loans, net	1,301,019	1,220,184
Commercial, Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	233,312	213,850
Allowance for possible loan losses	1,881	1,751	1,685	2,538
Real Estate | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Loans	233,229	225,863
Allowance for possible loan losses	1,455	1,333	1,245	773
Real Estate | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Loans	94,436	88,112
Allowance for possible loan losses	686	656	636	595
Real Estate | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Loans	481,973	447,840
Allowance for possible loan losses	4,713	4,429	3,861	3,166
Real Estate | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Loans	237,421	220,801
Allowance for possible loan losses	2,707	2,500	2,515	2,434
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	18,881	20,495
Allowance for possible loan losses	188	184	192	183
Other
Loans and Leases Receivable Disclosure [Line Items]
Loans	13,338	14,106
Allowance for possible loan losses	$ 36	$ 39	$ 35	$ 42

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	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			$ 10,892	$ 9,731
Charge-offs			(219)	(508)
Recoveries			793	509
Provision	$ 200	$ 300	200	437
Ending balance	11,666	10,169	11,666	10,169
Commercial, Industrial and Agricultural
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			1,751	2,538
Charge-offs			(168)	(308)
Recoveries			294	425
Provision			4	(970)
Ending balance	1,881	1,685	1,881	1,685
Real Estate | Multi-family and Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			4,429	3,166
Charge-offs			0	0
Recoveries			59	3
Provision			225	692
Ending balance	4,713	3,861	4,713	3,861
Real Estate | Construction, Land Development and Farmland
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			2,500	2,434
Charge-offs			0	(140)
Recoveries			201	44
Provision			6	177
Ending balance	2,707	2,515	2,707	2,515
Real Estate | 1-4 Family Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			1,333	773
Charge-offs			(17)	(8)
Recoveries			216	11
Provision			(77)	469
Ending balance	1,455	1,245	1,455	1,245
Real Estate | 1-4 Family HELOC
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			656	595
Charge-offs			0	(6)
Recoveries			11	5
Provision			19	42
Ending balance	686	636	686	636
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			184	183
Charge-offs			(21)	(24)
Recoveries			12	18
Provision			13	15
Ending balance	188	192	188	192
Other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance			39	42
Charge-offs			(13)	(22)
Recoveries			0	3
Provision			10	12
Ending balance	$ 36	$ 35	$ 36	$ 35

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	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Allowance for loan losses
Individually evaluated for impairment	$ 89	$ 55
Acquired with credit impairment	0	0
Collectively evaluated for impairment	11,577	10,837
Total	11,666	10,892	$ 10,169	$ 9,731
Loans
Individually evaluated for impairment	6,503	5,176
Acquired with credit impairment	1,304	2,296
Collectively evaluated for impairment	1,304,783	1,223,595
Total	1,312,590	1,231,067
Commercial, Industrial and Agricultural
Allowance for loan losses
Individually evaluated for impairment	72	38
Acquired with credit impairment	0	0
Collectively evaluated for impairment	1,809	1,713
Total	1,881	1,751	1,685	2,538
Loans
Individually evaluated for impairment	903	978
Acquired with credit impairment	0	40
Collectively evaluated for impairment	232,409	212,832
Total	233,312	213,850
Real Estate | Multi-family and Commercial
Allowance for loan losses
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	4,713	4,429
Total	4,713	4,429	3,861	3,166
Loans
Individually evaluated for impairment	3,017	1,160
Acquired with credit impairment	222	232
Collectively evaluated for impairment	478,734	446,448
Total	481,973	447,840
Real Estate | Construction, Land Development and Farmland
Allowance for loan losses
Individually evaluated for impairment	17	17
Acquired with credit impairment	0	0
Collectively evaluated for impairment	2,690	2,483
Total	2,707	2,500	2,515	2,434
Loans
Individually evaluated for impairment	1,069	1,780
Acquired with credit impairment	829	1,751
Collectively evaluated for impairment	235,523	217,270
Total	237,421	220,801
Real Estate | 1-4 Family Residential
Allowance for loan losses
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	1,455	1,333
Total	1,455	1,333	1,245	773
Loans
Individually evaluated for impairment	1,218	1,246
Acquired with credit impairment	253	262
Collectively evaluated for impairment	231,758	224,355
Total	233,229	225,863
Real Estate | 1-4 Family HELOC
Allowance for loan losses
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	686	656
Total	686	656	636	595
Loans
Individually evaluated for impairment	296	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	94,140	88,112
Total	94,436	88,112
Consumer
Allowance for loan losses
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	188	184
Total	188	184	192	183
Loans
Individually evaluated for impairment	0	12
Acquired with credit impairment	0	11
Collectively evaluated for impairment	18,881	20,472
Total	18,881	20,495
Other
Allowance for loan losses
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	36	39
Total	36	39	$ 35	$ 42
Loans
Individually evaluated for impairment	0	0
Acquired with credit impairment	0	0
Collectively evaluated for impairment	13,338	14,106
Total	$ 13,338	$ 14,106

Loans and Allowance for Loan _6

Loans and Allowance for Loan Losses - Textual (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 3,045	$ 4,194
Recorded investment, 90 days past due and still accruing	22	6
Previously disclosed troubled debt restructuring paid in full	89
Performing Financial Instruments
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	1,578	2,010
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	50	65
Multi-family and Commercial | Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	811	0
1-4 Family Residential | Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 1,187	$ 2,556
Minimum | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans and leases receivable repayment period	1 year
Minimum | Multi-family and Commercial | Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Percentage of loans in repayment	50.00%
Minimum | 1-4 Family Residential | Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Loan facility, amortization period	15 years
Loans commitment, maturity period	5 years
Maximum | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans and leases receivable repayment period	5 years
Maximum | 1-4 Family Residential | Real Estate
Loans and Leases Receivable Disclosure [Line Items]
Loan facility, amortization period	30 years
Loans commitment, maturity period	15 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	Jun. 30, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 3,045	$ 4,194
Commercial, Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	314	279
Real Estate | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	811	0
Real Estate | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	387	1,294
Real Estate | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	1,187	2,556
Real Estate | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	296	0
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Non-accrual loans	$ 50	$ 65

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	Jun. 30, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	$ 8,614	$ 9,109
Recorded Investment with no Allowance Recorded	7,321	7,047
Recorded Investment with Allowance Recorded	486	425
Total Recorded Investment	7,807	7,472
Related Allowance	89	55
Commercial, Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	904	1,247
Recorded Investment with no Allowance Recorded	589	765
Recorded Investment with Allowance Recorded	314	253
Total Recorded Investment	903	1,018
Related Allowance	72	38
Real Estate | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	3,513	1,670
Recorded Investment with no Allowance Recorded	3,239	1,392
Recorded Investment with Allowance Recorded	0	0
Total Recorded Investment	3,239	1,392
Related Allowance	0	0
Real Estate | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	2,214	3,920
Recorded Investment with no Allowance Recorded	1,726	3,359
Recorded Investment with Allowance Recorded	172	172
Total Recorded Investment	1,898	3,531
Related Allowance	17	17
Real Estate | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	1,685	2,243
Recorded Investment with no Allowance Recorded	1,471	1,508
Recorded Investment with Allowance Recorded	0	0
Total Recorded Investment	1,471	1,508
Related Allowance	0	0
Real Estate | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Unpaid Principal Balance	298
Recorded Investment with no Allowance Recorded	296
Recorded Investment with Allowance Recorded	0
Total Recorded Investment	296
Related Allowance	$ 0
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	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Loans and Leases Receivable Disclosure [Line Items]
Average balance of impaired loans	$ 7,835	$ 14,085
Commercial, Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Average balance of impaired loans	791	3,040
Real Estate | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Average balance of impaired loans	2,548	3,010
Real Estate | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Average balance of impaired loans	2,747	5,083
Real Estate | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Average balance of impaired loans	1,639	2,774
Real Estate | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Average balance of impaired loans	99	90
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Average balance of impaired loans	$ 11	$ 88

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	Jun. 30, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Loans	$ 1,312,590	$ 1,231,067
Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,302,288	1,216,941
Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans	266	4,839
Substandard
Loans and Leases Receivable Disclosure [Line Items]
Loans	10,036	9,287
Commercial, Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Loans	233,312	213,850
Commercial, Industrial and Agricultural | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans	231,448	212,761
Commercial, Industrial and Agricultural | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans	266	0
Commercial, Industrial and Agricultural | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,598	1,089
Real Estate | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Loans	233,229	225,863
Real Estate | 1-4 Family Residential | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans	231,538	221,546
Real Estate | 1-4 Family Residential | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans	0	1,125
Real Estate | 1-4 Family Residential | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Loans	1,691	3,192
Real Estate | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Loans	94,436	88,112
Real Estate | 1-4 Family HELOC | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans	93,974	88,112
Real Estate | 1-4 Family HELOC | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans	0	0
Real Estate | 1-4 Family HELOC | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Loans	462	0
Real Estate | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Loans	481,973	447,840
Real Estate | Multi-family and Commercial | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans	476,858	442,127
Real Estate | Multi-family and Commercial | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans	0	3,135
Real Estate | Multi-family and Commercial | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Loans	5,115	2,578
Real Estate | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Loans	237,421	220,801
Real Estate | Construction, Land Development and Farmland | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans	236,508	218,053
Real Estate | Construction, Land Development and Farmland | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans	0	579
Real Estate | Construction, Land Development and Farmland | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Loans	913	2,169
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans	18,881	20,495
Consumer | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans	18,624	20,236
Consumer | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans	0	0
Consumer | Substandard
Loans and Leases Receivable Disclosure [Line Items]
Loans	257	259
Other
Loans and Leases Receivable Disclosure [Line Items]
Loans	13,338	14,106
Other | Pass
Loans and Leases Receivable Disclosure [Line Items]
Loans	13,338	14,106
Other | Special Mention
Loans and Leases Receivable Disclosure [Line Items]
Loans	0	0
Other | Substandard
Loans and Leases Receivable Disclosure [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	Jun. 30, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Past due	$ 3,119	$ 3,722
Current	1,309,471	1,227,345
Total	1,312,590	1,231,067
Commercial, Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Past due	471	454
Current	232,841	213,396
Total	233,312	213,850
Real Estate | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Past due	1,263	2,642
Current	231,966	223,221
Total	233,229	225,863
Real Estate | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Past due	120	50
Current	94,316	88,062
Total	94,436	88,112
Real Estate | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Past due	1,064	104
Current	480,909	447,736
Total	481,973	447,840
Real Estate | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Past due	172	385
Current	237,249	220,416
Total	237,421	220,801
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Past due	29	87
Current	18,852	20,408
Total	18,881	20,495
Other
Loans and Leases Receivable Disclosure [Line Items]
Past due	0	0
Current	13,338	14,106
Total	13,338	14,106
30-59 Days Past Due
Loans and Leases Receivable Disclosure [Line Items]
Past due	2,047	1,401
30-59 Days Past Due | Commercial, Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Past due	170	22
30-59 Days Past Due | Real Estate | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Past due	680	1,104
30-59 Days Past Due | Real Estate | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Past due	120	50
30-59 Days Past Due | Real Estate | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Past due	1,064	0
30-59 Days Past Due | Real Estate | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Past due	1	214
30-59 Days Past Due | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Past due	12	11
30-59 Days Past Due | Other
Loans and Leases Receivable Disclosure [Line Items]
Past due	0	0
60-89 Days Past Due
Loans and Leases Receivable Disclosure [Line Items]
Past due	526	622
60-89 Days Past Due | Commercial, Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Past due	0	153
60-89 Days Past Due | Real Estate | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Past due	516	335
60-89 Days Past Due | Real Estate | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Past due	0	0
60-89 Days Past Due | Real Estate | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Past due	0	104
60-89 Days Past Due | Real Estate | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Past due	0	0
60-89 Days Past Due | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Past due	10	30
60-89 Days Past Due | Other
Loans and Leases Receivable Disclosure [Line Items]
Past due	0	0
Greater Than 90 Days Past Due
Loans and Leases Receivable Disclosure [Line Items]
Past due	546	1,699
Greater Than 90 Days Past Due | Commercial, Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Past due	301	279
Greater Than 90 Days Past Due | Real Estate | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Past due	67	1,203
Greater Than 90 Days Past Due | Real Estate | 1-4 Family HELOC
Loans and Leases Receivable Disclosure [Line Items]
Past due	0	0
Greater Than 90 Days Past Due | Real Estate | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Past due	0	0
Greater Than 90 Days Past Due | Real Estate | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Past due	171	171
Greater Than 90 Days Past Due | Consumer
Loans and Leases Receivable Disclosure [Line Items]
Past due	7	46
Greater Than 90 Days Past Due | Other
Loans and Leases Receivable Disclosure [Line Items]
Past due	$ 0	$ 0

Loans and Allowance for Loan_12

Loans and Allowance for Loan Losses - Troubled Debt Restructurings (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1
Pre-Modification Outstanding Recorded Investments	$ 1,254
Post-Modification Outstanding Recorded Investments	$ 1,254
Real Estate | 1-4 Family Residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1
Pre-Modification Outstanding Recorded Investments	$ 1,254
Post-Modification Outstanding Recorded Investments	$ 1,254

Loans and Allowance for Loan_13

Loans and Allowance for Loan Losses - Summary of Carrying Amount of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	$ 1,576	$ 2,596
Less remaining purchase discount	272	300
Allowance for loan losses	0	0
Carrying amount, net of allowance	1,304	2,296
Commercial, Industrial and Agricultural
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	0	63
Real Estate | Multi-family and Commercial
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	224	233
Real Estate | Construction, Land Development and Farmland
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	1,037	1,958
Real Estate | 1-4 Family Residential
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	315	324
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Total outstanding balance	$ 0	$ 18

Loans and Allowance for Loan_14

Loans and Allowance for Loan Losses - Activity Related to Accretable Portion of Loans Acquired (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance	$ 110	$ 110	$ 222	$ 0
New loans purchased	0	0	0	260
Loan payoffs	0		67
Loan charge offs	(7)	0	0	0
Accretion income	0	0	(95)	(38)
Balance	$ 103	$ 110	$ 60	$ 222

Other Real Estate (Details)

Other Real Estate (Details) $ in Thousands	Jan. 01, 2018USD ($)parcel	Jun. 30, 2019USD ($)loanpropertyborrower	Jun. 30, 2018USD ($)
Business Acquisition [Line Items]
Expenses related to other real estate		$ 15	$ 13
Number of loans in process of foreclosure | loan		4
Mortgage loans in process of foreclosure, amount		$ 48
Real Estate | 1-4 Family Residential
Business Acquisition [Line Items]
Number of properties | property		1
Other real estate		$ 848
Community First
Business Acquisition [Line Items]
Real estate parcels acquired | parcel	3
Other real estate owned, acquired	$ 1,650
Collateral Pledged
Business Acquisition [Line Items]
Number of borrowers with loans in process of foreclosure | borrower		1

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	Jun. 30, 2019	Dec. 31, 2018
Recurring | Interest rate swaps | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	$ 3,576	$ 1,183
Recurring | U. S. Treasury and other U. S. government agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	312	554
Recurring | State and municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	220,614	229,298
Recurring | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,019	3,017
Recurring | Mortgage backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	37,508	31,958
Recurring | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	28,920	27,996
Recurring | Interest rate swaps | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1	467
Recurring | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets		3,500
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Interest rate swaps | Interest rate swaps
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) | Interest rate swaps | Interest rate swaps
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
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liabilities	3,576	1,183
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	312	554
Recurring | Significant Other Observable Inputs (Level 2) | State and municipal
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	220,614	229,298
Recurring | Significant Other Observable Inputs (Level 2) | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	3,019	3,017
Recurring | Significant Other Observable Inputs (Level 2) | Mortgage backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	37,508	31,958
Recurring | Significant Other Observable Inputs (Level 2) | Asset backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	28,920	27,996
Recurring | Significant Other Observable Inputs (Level 2) | Interest rate swaps | Interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	1	467
Recurring | Significant Other Observable Inputs (Level 2) | Time deposits
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets		0
Recurring | Significant Unobservable Inputs (Level 3) | Interest rate swaps | Interest rate swaps
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) | Interest rate swaps | Interest rate swaps
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
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	397	370
Other real estate owned	1,848	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	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	0
Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	397	370
Other real estate owned	$ 1,848	$ 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) - Estimated costs to sell - Appraisal - Range (Weighted Average) - Significant Unobservable Inputs (Level 3) - Nonrecurring	Jun. 30, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0.10
Other real estate owned	0.10

Fair Values of Assets and Lia_5

Fair Values of Assets and Liabilities - Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Carrying Amount
Financial assets
Cash and due from banks	$ 35,917	$ 34,807
Federal funds sold	80	371
Loans, net	1,301,019	1,220,184
Mortgage loans held for sale	11,571	15,823
Accrued interest receivable	7,246	8,214
Restricted equity securities	11,488	11,690
Financial liabilities
Deposits	1,550,280	1,437,903
Accrued interest payable	967	1,063
Subordinate debentures	11,644	11,603
Federal Home Loan Bank advances	11,119	57,498
Estimated Fair Value
Financial assets
Cash and due from banks	35,917	34,807
Federal funds sold	80	371
Loans, net	1,288,697	1,206,574
Mortgage loans held for sale	11,701	15,871
Accrued interest receivable	7,246	8,214
Restricted equity securities	11,488	11,690
Financial liabilities
Deposits	1,551,492	1,434,652
Accrued interest payable	967	1,063
Subordinate debentures	12,261	11,522
Federal Home Loan Bank advances	11,133	57,434
Estimated Fair Value | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial assets
Cash and due from banks	35,917	34,807
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	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	80	371
Loans, net	0	0
Mortgage loans held for sale	11,701	15,871
Accrued interest receivable	7,246	8,214
Restricted equity securities	11,488	11,690
Financial liabilities
Deposits	0	0
Accrued interest payable	967	1,063
Subordinate debentures	0	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	1,288,697	1,206,574
Mortgage loans held for sale	0	0
Accrued interest receivable	0	0
Restricted equity securities	0	0
Financial liabilities
Deposits	1,551,492	1,434,652
Accrued interest payable	0	0
Subordinate debentures	12,261	11,522
Federal Home Loan Bank advances	$ 11,133	$ 57,434

Stock-based Compensation - Text

Stock-based Compensation - Textual (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 18, 2015	Mar. 10, 2015	Dec. 31, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized future compensation expense related to stock options	$ 259
Equity Incentive Plan 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)		900,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise period for stock option awards	10 years
Employee Stock Option | Commerce Union Bank Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)				625,000
Employee Stock Option | Commerce Union Bancshares, Inc. Amended and Restated Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)			1,250,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to non-vested restricted share awards	$ 1,250
Minimum | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	1 year
Maximum | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years

Stock-based Compensation - Stoc

Stock-based Compensation - Stock Option Activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares
Shares
Outstanding, beginning (in shares) | shares	159,260
Granted (in shares) | shares	1,000
Exercised (in shares) | shares	(26,706)
Forfeited or expired (in shares) | shares	(2,753)
Outstanding, ending (in shares) | shares	130,801	159,260
Exercisable, shares (in shares) | shares	64,201
Weighted Average Exercise Price
Outstanding, beginning (in dollars per share) | $ / shares	$ 16.72
Granted (in dollars per share) | $ / shares	22.67
Exercised (in dollars per share) | $ / shares	13.14
Forfeited or expired (in dollars per share) | $ / shares	19.34
Outstanding, ending (in dollars per share) | $ / shares	17.44	$ 16.72
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 13.75
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value
Outstanding, Weighted Average Remaining Contractual Term	6 years 2 months 19 days	6 years 15 days
Granted, Weighted Average Remaining Contractual Term
Exercised, Weighted Average Remaining Contractual Term
Forfeited or expired, Weighted Average Remaining Contractual Term
Exercisable, Weighted Average Remaining Contractual Term	4 years 7 months 28 days
Outstanding, Aggregate Intrinsic Value | $	$ 924	$ 1,146
Exercisable, Aggregate Intrinsic Value | $	$ 636

Stock-based Compensation - Nonv

Stock-based Compensation - Nonvested Stock Option Activity (Details)	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Shares
Non-vested options, beginning (in shares) | shares	71,200
Granted (in shares) | shares	1,000
Vested (in shares) | shares	(2,847)
Forfeited (in shares) | shares	(2,753)
Non-vested options, ending (in shares) | shares	66,600
Weighted Average Grant-Date Fair Value
Non-vested options, beginning (in dollars per share) | $ / shares	$ 5.28
Granted (in dollars per share) | $ / shares	6.57
Vested (in dollars per share) | $ / shares	4.24
Forfeited (in dollars per share) | $ / shares	4.89
Non-vested options, ending (in dollars per share) | $ / shares	$ 5.36

Stock-based Compensation - No_2

Stock-based Compensation - Nonvested Restricted Stock Activity (Details) - Restricted Stock	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Shares
Non-vested shares, Beginning (in shares) | shares	110,660
Granted (in shares) | shares	8,000
Vested (in shares) | shares	0
Forfeited (in shares) | shares	(7,750)
Non-vested shares, Ending (in shares) | shares	110,910
Weighted Average Grant-Date Fair Value
Non-vested shares, Beginning (in dollars per share) | $ / shares	$ 24.28
Granted (in dollars per share) | $ / shares	21.94
Vested (in dollars per share) | $ / shares	0
Forfeited (in dollars per share) | $ / shares	23.25
Non-vested shares, Ending (in dollars per share) | $ / shares	$ 24.19

Regulatory Capital Requiremen_3

Regulatory Capital Requirements - Summary of Bank's Actual Capital Amounts and Ratios (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier I leverage	$ 168,218	$ 168,876
Tier I leverage, ratio	9.81%	10.38%
Tier I leverage, minimum required capital including capital conservation buffer	$ 68,590	$ 65,077
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	$ 85,738	$ 81,347
Tier I leverage, to be well capitalized under prompt corrective action provisions, ratio	5.00%	5.00%
Common equity tier 1	$ 156,574	$ 157,273
Common equity tier 1, ratio	10.93%	11.59%
Common equity tier 1, minimum required capital including capital conservation buffer	$ 100,276	$ 86,507
Common equity tier 1, minimum required capital including capital conservation buffer, ratio	7.00%	6.375%
Common equity tier 1, to be well capitalized under prompt corrective action provisions	$ 93,114	$ 88,203
Common equity tier 1, to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
Tier I risk-based capital	$ 168,218	$ 168,876
Tier I risk-based capital, ratio	11.75%	12.44%
Tier I risk-based capital, minimum required capital including capital conservation buffer	$ 121,690	$ 106,905
Tier I risk-based capital, minimum required capital including capital conservation buffer, ratio	8.50%	7.875%
Tier I risk-based capital, to be well capitalized under prompt corrective action provisions	$ 114,531	$ 108,602
Tier I risk-based capital, to be well capitalized under prompt corrective action provisions, ratio	8.00%	8.00%
Total risk-based capital	$ 180,309	$ 180,193
Total risk-based capital, ratio	12.59%	13.28%
Total risk-based capital, minimum required capital including capital conservation buffer	$ 150,377	$ 133,991
Total risk-based capital, minimum required capital including capital conservation buffer, ratio	10.50%	9.875%
Total risk-based capital, to be well capitalized under prompt corrective action provisions	$ 143,216	$ 135,688
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	$ 164,042	$ 165,308
Tier I leverage, ratio	9.58%	10.17%
Tier I leverage, minimum required capital including capital conservation buffer	$ 68,492	$ 65,018
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	$ 85,615	$ 81,272
Tier I leverage, to be well capitalized under prompt corrective action provisions, ratio	5.00%	5.00%
Common equity tier 1	$ 164,042	$ 165,308
Common equity tier 1, ratio	11.48%	12.19%
Common equity tier 1, minimum required capital including capital conservation buffer	$ 100,020	$ 86,451
Common equity tier 1, minimum required capital including capital conservation buffer, ratio	7.00%	6.375%
Common equity tier 1, to be well capitalized under prompt corrective action provisions	$ 92,875	$ 88,146
Common equity tier 1, to be well capitalized under prompt corrective action provisions, ratio	6.50%	6.50%
Tier I risk-based capital	$ 164,042	$ 165,308
Tier I risk-based capital, ratio	11.48%	12.19%
Tier I risk-based capital, minimum required capital including capital conservation buffer	$ 121,452	$ 106,792
Tier I risk-based capital, minimum required capital including capital conservation buffer, ratio	8.50%	7.875%
Tier I risk-based capital, to be well capitalized under prompt corrective action provisions	$ 114,308	$ 108,488
Tier I risk-based capital, to be well capitalized under prompt corrective action provisions, ratio	8.00%	8.00%
Total risk-based capital	$ 176,133	$ 176,625
Total risk-based capital, ratio	12.33%	13.02%
Total risk-based capital, minimum required capital including capital conservation buffer	$ 150,029	$ 133,961
Total risk-based capital, minimum required capital including capital conservation buffer, ratio	10.50%	9.875%
Total risk-based capital, to be well capitalized under prompt corrective action provisions	$ 142,885	$ 135,657
Total risk-based capital, to be well capitalized under prompt corrective action provisions, ratio	10.00%	10.00%

Earnings Per Share - Summary of

Earnings Per Share - Summary of Components of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic EPS Computation
Net income attributable to common shareholders	$ 4,239	$ 2,139	$ 8,063	$ 5,880
Weighted average common shares outstanding (in shares)	11,196,898	11,396,829	11,300,095	11,389,634
Basic earnings per common share (in dollars per share)	$ 0.38	$ 0.19	$ 0.71	$ 0.52
Diluted EPS Computation
Net income attributable to common shareholders	$ 4,239	$ 2,139	$ 8,063	$ 5,880
Dilutive effect of stock options, restricted shares and employee stock purchase plan (in shares)	89,729	98,404	78,300	96,838
Adjusted weighted average common shares outstanding (in shares)	11,286,627	11,495,233	11,378,395	11,486,472
Diluted earnings per common share (in dollars per share)	$ 0.38	$ 0.19	$ 0.71	$ 0.51

Segment Reporting - Textual (De

Segment Reporting - Textual (Details)	6 Months Ended
	Jun. 30, 2019segment
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				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Net interest income	$ 13,813		$ 13,404		$ 27,274	$ 26,786
Provision for loan losses	200		300		200	437
Noninterest income	2,698		2,254		4,636	5,245
Noninterest expense (excluding merger expense)	13,125		11,558		25,869	23,543
Merger expenses	1		2,483		3	2,660
Income tax expense (benefit)	501		115		873	912
Net income (loss)	2,684	$ 2,281	1,202	$ 3,277	4,965	4,479
Noncontrolling interest in net loss of subsidiary	1,555		937		3,098	1,401
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	4,239		2,139		8,063	5,880
Operating Segments | Retail Banking
Segment Reporting Information [Line Items]
Net interest income	13,703		13,190		27,076	26,234
Provision for loan losses	200		300		200	437
Noninterest income	1,473		1,299		2,851	2,587
Noninterest expense (excluding merger expense)	10,129		9,389		20,574	18,840
Merger expenses	1		2,483		3	2,660
Income tax expense (benefit)	607		178		1,087	1,004
Net income (loss)	4,239		2,139		8,063	5,880
Noncontrolling interest in net loss of subsidiary	0		0		0	0
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	4,239		2,139		8,063	5,880
Operating Segments | Residential Mortgage Banking
Segment Reporting Information [Line Items]
Net interest income	110		214		198	552
Provision for loan losses	0		0		0	0
Noninterest income	1,235		993		1,810	2,741
Noninterest expense (excluding merger expense)	2,996		2,169		5,295	4,703
Merger expenses	0		0		0	0
Income tax expense (benefit)	(106)		(63)		(214)	(92)
Net income (loss)	(1,545)		(899)		(3,073)	(1,318)
Noncontrolling interest in net loss of subsidiary	1,545		899		3,073	1,318
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	0		0		0	0
Elimination Entries
Segment Reporting Information [Line Items]
Net interest income	0		0		0	0
Provision for loan losses	0		0		0	0
Noninterest income	(10)		(38)		(25)	(83)
Noninterest expense (excluding merger expense)	0		0		0	0
Merger expenses	0		0		0	0
Income tax expense (benefit)	0		0		0	0
Net income (loss)	(10)		(38)		(25)	(83)
Noncontrolling interest in net loss of subsidiary	10		38		25	83
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 0		$ 0		$ 0	$ 0

Derivatives - Textual (Details)

Derivatives - Textual (Details)	Jun. 30, 2019USD ($)
Cash Flow Hedging | Interest rate swaps
Derivative [Line Items]
Notional amounts	$ 60,000,000

Derivatives - Interest Rate Swa

Derivatives - Interest Rate Swaps Designated as Cash Flow Hedges (Details) - Cash Flow Hedging - Interest rate swaps	6 Months Ended
	Jun. 30, 2019USD ($)
Derivative [Line Items]
Notional amounts	$ 60,000,000
Weighted average pay rates	3.338%
Weighted average receive rates	3.06%
Weighted average maturity	3 years 11 months 19 days
Unrealized losses	$ 2,955,000

Derivatives - Net Gains (Losses

Derivatives - Net Gains (Losses) Relating to Cash Flow Derivative Instruments (Details) - Cash Flow Hedging - Interest rate swaps $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)
Derivative [Line Items]
Amount of Gain (Loss) Recognized in OCI (Effective Portion)	$ (1,802)
Amount of Gain (Loss) Reclassified from OCI to Interest Income	0
Amount of Gain (Loss) Recognized in Other Non-Interest Income (Ineffective Portion)	$ 0

Derivatives - Cash Flow Hedges

Derivatives - Cash Flow Hedges and Fair Value Hedges Included in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Cash Flow Hedging | Other Liabilities
Derivative [Line Items]
Derivative Liability, Notional Amount	$ 60,000	$ 60,000
Derivative Liability, Fair Value	2,955	1,153
Cash Flow Hedging | Subordinate debentures | Interest rate swaps
Derivative [Line Items]
Derivative Liability, Notional Amount	10,000	10,000
Derivative Liability, Fair Value	475	174
Cash Flow Hedging | Federal Home Loan Bank borrowings | Interest rate swaps
Derivative [Line Items]
Derivative Liability, Notional Amount	50,000	50,000
Derivative Liability, Fair Value	2,480	979
Fair Value Hedging | Other Assets
Derivative [Line Items]
Derivative Asset, Notional Amount	1,000	16,902
Derivative Asset, Fair Value	1	467
Fair Value Hedging | Other Assets | Interest rate swaps
Derivative [Line Items]
Derivative Asset, Notional Amount	1,000	16,902
Derivative Asset, Fair Value	1	467
Fair Value Hedging | Other Liabilities
Derivative [Line Items]
Derivative Liability, Notional Amount	19,605	4,203
Derivative Liability, Fair Value	621	30
Fair Value Hedging | Other Liabilities | Interest rate swaps
Derivative [Line Items]
Derivative Liability, Notional Amount	19,605	4,203
Derivative Liability, Fair Value	$ 621	$ 30

Derivatives - Fair Value Hedges

Derivatives - Fair Value Hedges Included in the Consolidated Statements of Income (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Fair Value Hedging | Interest income | Interest rate swaps
Derivative [Line Items]
Change in fair value on interest rate swaps hedging investments	$ (1,057)	$ 255

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 501	$ 115	$ 873	$ 912
Effective income tax rate	16.00%	9.00%	15.00%	17.00%

Business Combination - Narrativ

Business Combination - Narrative (Details) - Community First $ in Thousands	12 Months Ended
	Dec. 31, 2018USD ($)	Jan. 01, 2018
Business Acquisition [Line Items]
Exchange ratio for Reliant Bancorp, Inc. common stock		0.481
Other assets adjustment	$ 93
Accounts payable and other liabilities adjustment	$ 85

Business Combination - Financia

Business Combination - Financial Impact of Merger (Details) $ / shares in Units, $ in Thousands	Jan. 01, 2018USD ($)shares	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017shares	Dec. 29, 2017$ / shares
Allocation of Purchase Price
Goodwill		$ 43,642	$ 43,642
Community First
Calculation of Purchase Price
Shares of Community First common stock outstanding as of December 31, 2017 (in shares) | shares				5,025,884
Exchange ratio for Reliant Bancorp, Inc. common stock	0.481
Share conversion (in shares) | shares	2,417,450.204
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
Allocation of Purchase Price
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

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Details) - Scenario, Forecast - Accounting Standards Update 2016-02 $ in Thousands	Jan. 01, 2020USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right to use asset	$ 11,455
Lease liability	$ 11,455
Reduction in Tier 1 leverage capital ratio (in basis points)	0.0007