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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Net number of non-option equity instruments granted to participants.

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Gross number of share options (or share units) granted during the period.

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Amount of unrecognized tax benefits.

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Note 2 - Summary of Significant Accounting Policies (Details Textual) $ / shares in Units, $ in Thousands		3 Months Ended								12 Months Ended
	Feb. 27, 2019 shares	Dec. 31, 2018 USD ($) $ / shares	Sep. 30, 2018 $ / shares	Jun. 30, 2018 $ / shares	Mar. 31, 2018 $ / shares	Dec. 31, 2017 $ / shares	Sep. 30, 2017 $ / shares	Jun. 30, 2017 $ / shares	Mar. 31, 2017 $ / shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares
Number of Variable Interest Entity										1
Maximum Maturity Period for Cash Equivalents										90 days
Number of Investment Portfolios										3
Number of Securities Held as Trading Securities										0	0
Unrecognized Tax Benefits, Ending Balance \| $		$ 0								$ 0
Number of Reportable Segments										2	2
Earnings Per Share, Diluted, Total \| $ / shares		$ 0.22	$ 0.03	$ 0.06	$ 0.06	$ (0.30)	$ 0.10	$ 0.06	$ 0.06	$ 0.37	$ (0.07)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross										62,150	70,600
Service and Other Charges On Deposit Accounts, Mortgage Fees from Secondary Market Transactions at the Bank, ATM Fee Income and Other Non-Interest Income [Member]
Revenues, Total \| $										$ 3,200	$ 3,000
Non Qualified Stock Options [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	66,150
Restricted Stock [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted	5,520
Previously Reported [Member]
Earnings Per Share, Diluted, Total \| $ / shares											$ (0.06)
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life										7 years
Minimum [Member]
Property, Plant and Equipment, Useful Life										3 years
Maximum [Member]
Property, Plant and Equipment, Useful Life										40 years