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Note 11 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Effective Income Tax Rate Reconciliation, Percent, Total | 21.80% | 41.10% | 38.50%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability |  | $ 2,800 |
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount | $ (500) | (2,774) |
Deferred Tax Assets, Valuation Allowance, Total | 0 | 0 |
Unrecognized Tax Benefits, Ending Balance | 1,132 | $ 0 |
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total | 0 |  |
Domestic Tax Authority [Member] |  |  |
Operating Loss Carryforwards, Total | $ 19,600 |  |
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |  |
Open Tax Year | 2015 2016 2017 | 2015 2016 2017 |
State and Local Jurisdiction [Member] |  |  |
Operating Loss Carryforwards, Total | $ 51,600 |  |
State and Local Jurisdiction [Member] | Connecticut [Member] |  |  |
Open Tax Year | 2015 2016 2017 |  |
State and Local Jurisdiction [Member] | New York State Division of Taxation and Finance [Member] |  |  |
Open Tax Year | 2015 2016 2017 |  |

X
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