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Note 4 - Stock-based Compensation; Changes in Equity (Details Textual) - USD ($)		1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 11, 2019	May 31, 2019	Jan. 31, 2019	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Dec. 20, 2018	Jun. 08, 2018	Apr. 10, 2009
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate						0.00%		0.00%
Dividends, Common Stock, Cash						$ 0		$ 0
Share-based Payment Arrangement, Expense				$ 23,000	$ 52,000	44,000	$ 172,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total				140,000		140,000
Expected Recognized Compensation Expenses, Remainder of the Fiscal Year				40,000		40,000
Expected Recognized Compensation Expenses in Year Two				$ 56,000		$ 56,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance				471,144		471,144		471,144
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value				$ 80,000		$ 80,000
Stock Issued During Period, Value, New Issues						$ 303,000
Share Price									$ 3.32
Promissory Note [Member] | John H Schwan [Member]
Debt Conversion, Original Debt, Amount	$ 600,000
Debt Conversion, Converted Instrument, Shares Issued	180,723
Disputed Compensation Amounts by Claimants [Member] | God’s Little Gift, Inc. (d\b\a) Helium and Balloons Across America and Gary Page [Member]
Stock Issued During Period, Shares, New Issues		100,000	20,000
Stock Issued During Period, Value, New Issues		$ 303,000	$ 67,000
Stock Incentive Plan 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized											510,000
Stock Incentive Plan 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized										300,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance				471,144		471,144

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Represents the expected recognized expenses for year two arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees Represents the expected recognized expenses for the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Represents the expected recognized expenses for the remainder of the fiscal year arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees Represents the expected recognized expenses for the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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