The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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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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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Note 8 - Business Combination, Goodwill and Other Intangible Assets (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	May 10, 2018
Goodwill, Ending Balance	$ 1,107,000	$ 1,728,000	$ 1,728,000
Goodwill, Purchase Accounting Adjustments	(621,000)
Amortization of Intangible Assets, Total	$ 75,000	50,000
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years
Amortization of Intangible Assets, Total	$ 75,000	50,000
Prime Bank [Member]
Goodwill, Ending Balance	1,100,000	1,700,000		$ 2,100,000
Goodwill, Purchase Accounting Adjustments	$ (621,000)
Hana SBL [Member]
Business Combination, Acquisition Related Costs		$ 1,150,000