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Note 4 - Stock-based Compensation; Changes in Equity (Details Textual) - USD ($) $ / shares in Units, xbrli-pure in Thousands |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 11, 2019 | Jan. 31, 2019 | Mar. 31, 2019 | 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% |  |  |
Share-based Payment Arrangement, Expense |  |  | $ 29,000 | $ 62,000 |  |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total |  |  | 164,000 |  |  |  |
Expected Recognized Compensation Expenses, Remainder of the Fiscal Year |  |  | 63,000 |  |  |  |
Expected Recognized Compensation Expenses in Year Two |  |  | $ 56,000 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares) |  |  | 471,144 | 471,144 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value |  |  | $ 78,000 |  |  |  |
Stock Issued During Period, Value, New Issues |  |  |  |  |  |  |
Share Price (in dollars per share) |  |  |  |  | $ 3.32 |  |
Promissory Note [Member] | John H Schwan [Member] |  |  |  |  |  |  |
Debt Conversion, Original Debt, Amount | $ 600,000 |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued (in shares) | 180,723 |  |  |  |  |  |
Common Stock [Member] | 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 (in shares) |  | 20,000 |  |  |  |  |
Stock Issued During Period, Value, New Issues |  |  |  | $ 67,000 |  |  |
Stock Incentive Plan 2009 [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) |  |  |  |  |  | 300,000 | 510,000
Stock Incentive Plan 2018 [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares) |  |  | 471,144 |  |  |  |

X
- Definition 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. + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
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- Definition The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586 + Details
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