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Note 4 - Investments (Details Textual) - USD ($)		3 Months Ended				9 Months Ended
	Dec. 30, 2016	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2020	Jun. 30, 2018	Sep. 30, 2021	Dec. 31, 2020	Jun. 30, 2019
Equity Method Investments				$ 0
Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount				$ 750,000	$ 250,000
Payments to Acquire Investments, Total						$ 1,000,000
Long-term Investments, Total		$ 2,707,000				2,707,000	$ 1,921,000
Long-term Investments [Member]
Equity Method Investments		1,707,000				1,707,000
Other Current Liabilities [Member]
Deposit Liability, Current		910,000				910,000	$ 3,335,000
Equity Method Investments [Member] | Investment Income (Expense) [Member]
Gain (Loss) on Investments, Total		$ (53,000)				$ (215,000)
Privately-Held Identity and Professional Services Company With Ties to the FinTech Industry [Member]
Equity Method Investment, Ownership Percentage								40.00%
Investments, Unfunded Commitments	$ 1,000,000
Privately Held Company Providing Supply Chain and Receivables Financing [Member]
Payments to Acquire Investments, Total			$ 1,000,000
Long-term Investments, Total			$ 1,000,000

X

- Definition

The amount of unfunded commitments for which the entity is obligated to pay in connection to an investment.

+ References

No definition available.

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The current portion, due within one year or one operating cycle, if longer, of deposits held other than customer deposits.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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

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Amount of realized and unrealized gain (loss) on investment.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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