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Note 14 - Income Taxes (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Effective Income Tax Rate Reconciliation, Percent, Total | 8.10% | 24.20% | 21.80% |
Deferred Tax Assets, Valuation Allowance, Total | $ 1,937,000 |  |  |
Unrecognized Tax Benefits, Ending Balance | 0 | $ 1,220,000 | $ 1,132,000 |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |  |  |
Operating Loss Carryforwards, Including Limitation Amount | 21,800,000 |  |  |
Operating Loss Carryforwards, Limitation Amount | 15,500,000 |  |  |
Operating Loss Carryforwards, Total | 21,800,000 |  |  |
Operating Loss Carryforwards, Subject to Expiration | 20,200,000 |  |  |
Operating Loss Carryforwards, Not Subject to Expiration | $ 1,600,000 |  |  |
Open Tax Year | 2017 2018 2019 2020 |  |  |
State and Local Jurisdiction [Member] | Department of Revenue Services for the State of Connecticut [Member] |  |  |  |
Operating Loss Carryforwards, Total | $ 55,800,000 |  |  |
Operating Loss Carryforwards, Maximum Percentage of Taxable Income Per Year Allowed to be Offset by NOLs | 50.00% |  |  |
Open Tax Year | 2017 2018 2019 2020 |  |  |
State and Local Jurisdiction [Member] | New York State Division of Taxation and Finance [Member] |  |  |  |
Open Tax Year | 2017 2018 2019 2020 |  |  |

X
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