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Percentage of consideration transferred consisting of only cash issued by the acquirer.

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Percentage of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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Amount of unrealized loss related to equity securities.

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Number of equity security without readily determinable fair value.

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Represents the impairment on Federal Home Loan Bank stock.

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Represents the number of securities of any individual issuer, except for securities of U.S. government and government-sponsored agencies, that exceed 10 percent of shareholders' equity as of a specified date.

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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

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Amount of investment in equity security without readily determinable fair value.

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The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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Amount of cash outflow to acquire investments classified as other.

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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

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Price of a single share of a number of saleable stocks of a company.

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Note 3 - Securities (Details Textual) $ / shares in Units, $ in Thousands	3 Months Ended			12 Months Ended
	Sep. 30, 2020 $ / shares shares	Mar. 31, 2020 USD ($) shares	Mar. 31, 2019 USD ($)	Dec. 31, 2017 USD ($) $ / shares	Dec. 31, 2019 USD ($)
Number of Non-government Securities of Any Individual Issuer Exceeding 10 Percent of Shareholders' Equity		0	0
Security Owned and Pledged as Collateral, Fair Value, Total		$ 262,500
Proceeds from Sale of Debt Securities, Available-for-sale		7,975	$ 25,130
Debt Securities, Available-for-sale, Realized Gain		149	176
Debt Securities, Available-for-sale, Realized Loss		$ 0	$ 16
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions		30			21
Other than Temporary Impairment Losses, Investments, Total		$ 0
Equity Securities, FV-NI		934			$ 920
Share Price (in dollars per share) \| $ / shares				$ 8.25
Merger Agreement [Member] \| Forecast [Member]
Business Acquisition, Equity Interest Issued or Issuable, Per Share (in shares) \| shares	0.6212
Business Acquisition, Share Price (in dollars per share) \| $ / shares	$ 16.50
Business Combination, Consideration Transferred, Cash, Percent	25.00%
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Percent	75.00%
Other Assets [Member]
Equity Securities without Readily Determinable Fair Value, Amount		1,700			1,700
Federal Home Loan Bank of Pittsburgh [Member]
Impairment on Federal Home Loan Bank Stock		0			0
Mutual Fund [Member]
Equity Securities, FV-NI, Cost		1,000			1,000
Equity Securities, FV-NI, Accumulated Unrealized Loss		66			80
Equity Securities, FV-NI		$ 934			$ 920
Asset-backed Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions		7			2
Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions		7
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions		6
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions		6			10
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions		4
Equity Security Without Readily Determinable Fair Value [Member]
Equity Securities without Readily Determinable Fair Value, Shares (in shares) \| shares		201,000
Payments to Acquire Other Investments				$ 1,700