Note 2 - Acquisition - Summary of Assets Acquired and Liabilities Assumed (Details) - USD ($)	Apr. 02, 2018	Dec. 31, 2018	Dec. 31, 2017
Liabilities Assumed
Goodwill		$ 1,434,982
Hometown Bancshares, Inc. [Member]
Assets Acquired
Cash and Due From Banks	$ 7,083,000
Investment Securities	7,521,000
Loans	143,919,000
Allowance for Loan Losses
Net Loans	143,919,000
Fixed Assets	10,066,000
Foreclosed Assets held for sale	1,247,000
Core Deposit Intangible	3,520,000
Other Assets	6,609,000
Total Assets Acquired	179,965,000
Liabilities Assumed
Deposits	161,248,000
Federal Home Loan Bank advances	2,000,000
Securities Sold Under Agreements to Repurchase	2,159,000
Other borrowings	3,000,000
Subordinated debentures	6,362,000
Other Liabilities	2,003,000
Total Liabilities Assumed	176,772,000
Total Liabilities and Stockholders' Equity Assumed	176,772,000
Net Assets Acquired	3,193,000
Purchase Price	4,628,000
Goodwill	1,435,000	$ 1,434,982
Hometown Bancshares, Inc. [Member] | Acquiree Reported Value [Member]
Assets Acquired
Cash and Due From Banks	7,083,000
Investment Securities	7,521,000
Loans	150,390,000
Allowance for Loan Losses	(2,348,000)
Net Loans	148,042,000
Fixed Assets	9,268,000
Foreclosed Assets held for sale	1,647,000
Core Deposit Intangible
Other Assets	4,146,000
Total Assets Acquired	177,707,000
Liabilities Assumed
Deposits	161,001,000
Federal Home Loan Bank advances	2,000,000
Securities Sold Under Agreements to Repurchase	2,159,000
Other borrowings	3,000,000
Subordinated debentures	6,186,000
Other Liabilities	2,003,000
Total Liabilities Assumed	176,349,000
Common Stock	231,000
Capital Surplus	18,936,000
Retained Earnings	(17,587,000)
Accumulated Other Comprehensive Loss	(222,000)
Treasury Stock
Total Stockholders' Equity Assumed	1,358,000
Total Liabilities and Stockholders' Equity Assumed	177,707,000
Hometown Bancshares, Inc. [Member] | Acquisition, Fair Value Adjustments [Member]
Assets Acquired
Cash and Due From Banks
Investment Securities
Loans	(6,471,000)
Allowance for Loan Losses	2,348,000
Net Loans	(4,123,000)
Fixed Assets	798,000
Foreclosed Assets held for sale	(400,000)
Core Deposit Intangible	3,520,000
Other Assets	2,463,000
Total Assets Acquired	2,258,000
Liabilities Assumed
Deposits	247,000
Federal Home Loan Bank advances
Securities Sold Under Agreements to Repurchase
Other borrowings
Subordinated debentures	176,000
Other Liabilities
Total Liabilities Assumed	423,000
Common Stock	(231,000)
Capital Surplus	(18,936,000)
Retained Earnings	17,587,000
Accumulated Other Comprehensive Loss	222,000
Treasury Stock
Total Stockholders' Equity Assumed	(1,358,000)
Total Liabilities and Stockholders' Equity Assumed	$ (935,000)