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Note 10 - Share-based Compensation (Details Textual) - USD ($) |  |  |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Mar. 26, 2019 | Feb. 01, 2019 | Mar. 12, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Mar. 31, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number |  |  |  | 5,157,998 |  |  |  |  |  |  |
Share-based Payment Arrangement, Accelerated Cost |  |  |  |  |  |  | $ 14,667,000 |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  |  | $ 2,790,000 | $ 2,594,000 |  | $ 8,019,000 |  | $ 27,569,000 |
Treasury Stock, Shares, Ending Balance |  |  |  |  | 1,791,186 |  |  | 1,791,186 |  |  | 1,233,198
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  |  |  |  | $ 15,548,000 |  |  |  |
Board of Directors Chairman [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number |  |  |  |  |  |  | 2,500,000 |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  |  |  |  | $ 6,468,000 |  |  |  |
Share-based Payment Arrangement, Option [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number |  |  |  | 47,500 |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  |  | $ 1,250,000 | 0 |  | $ 3,353,000 |  | 243,000 |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total |  |  |  |  | 2,339,000 |  |  | $ 2,339,000 |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number |  |  |  | 4,960,498 |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  |  | 2,119,628 |  |  |
Share-based Payment Arrangement, Expense |  |  |  |  | $ 1,562,000 | $ 2,675,000 |  | $ 4,733,000 |  | $ 27,871,000 |
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Vested and Unissued Weighted Average Grant Date Fair Value. | [1] |  |  |  |  |  |  | $ 4.75 |  |  |
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Vested and Unissued in Period |  | 627,752 |  |  |  |  |  | 112,582 | [1] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |  |  |  |  |  |  |  | 1,490,913 |  |  |
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Vested and Unissued Outstanding |  |  |  |  | 2,797,335 |  |  | 2,797,335 |  |  |
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount |  |  |  |  | $ 14,668,000 |  |  | $ 14,668,000 |  |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition |  |  |  |  |  |  |  | 2 years 182 days |  |  |
Restricted Stock Units (RSUs) [Member] | Marlin Capital Investments, LLC [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number |  |  |  | 500,000 |  |  |  |  |  |  |
Share-based Payment Arrangement, Accelerated Cost |  |  |  | $ 906,000,000 |  |  |  |  |  |  |
Restricted Stock Units (RSUs) [Member] | Board of Directors Chairman [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number |  |  |  | 2,500,000 |  |  |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Number |  |  |  | 150,000 |  |  |  |  |  |  |
Spinoff Grants [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period |  | 740,334 |  |  |  |  |  |  |  |  |
Spinoff Grants [Member] | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  |  |  |  |  | 304,000 |  |  |  |
Share-based Payment Arrangement, Expense |  |  |  |  |  |  | $ 881,000 |  |  |  |
Transaction Grants [Member] | Discontinued Operations, Disposed of by Means Other than Sale, Spinoff [Member] |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other than Options Vested and Unissued Weighted Average Grant Date Fair Value. |  |  |  |  |  |  | $ 2,041,000 |  |  |  |
Sharebased Compensation Award, Deferred Delivery Period |  |  |  |  |  |  | 3 years |  |  |  |
Spinoff Transaction Costs, Non Cash, Share Based Compensation |  |  |  |  |  |  | $ 5,409,000 |  |  |  |
The 2015 Stock Incentive Plan and 2018 Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized |  |  |  |  | 21,178,330 |  |  | 21,178,330 |  |  |
The 2018 Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance |  |  |  |  | 3,614,784 |  |  | 3,614,784 |  |  |
The 2018 Stock Incentive Plan [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value |  |  | $ 2.81 |  |  |  |  |  |  |  |
The 2018 Stock Incentive Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value |  |  | $ 2.86 |  |  |  |  |  |  |  |
The 2018 Stock Incentive Plan [Member] | Share-based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent |  |  | 125.00% |  |  |  |  |  |  |  |
The 2018 Stock Incentive Plan [Member] | Share-based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent |  |  | 156.25% |  |  |  |  |  |  |  |
The 2018 Stock Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |  |  | 5 years |  |  |  |  |  |  |  |
The 2018 Stock Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member] | Vesting if Stock Price is Above 125 Percent of Exercise Price For 20 Consecutive Days [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  | 50.00% |  |  |  |  |  |  |  |
The 2018 Stock Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member] | Vesting if Stock Price is Above 156 point 25 Percent of Exercise Price For 20 Consecutive Days [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  | 50.00% |  |  |  |  |  |  |  |
[1] | Vested not delivered represents vested RSUs with delivery deferred to a future time. For the nine months ended September 30, 2019, there was a net decrease of 112,582 shares included in vested not delivered as a result of the delivery of Spin-off Grants of 740,334 shares, partially offset by the net activity from vesting of RSUs with deferred delivery of 627,752 shares. As of September 30, 2019, there were 2,797,335 outstanding RSUs included in vested not delivered.

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