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Note 1 - Basis of Presentation (Details Textual) - USD ($) $ in Thousands |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 17, 2017 | Mar. 31, 2017 | Dec. 31, 2019 | Jan. 01, 2017 | Dec. 31, 2016
Accrued Liabilities, Current |  | $ 8,393 |  |  | $ 13,802
Property, Plant and Equipment, Additions |  | $ 23,100 |  |  |
Period for Creating Allowance for Doubtful Accounts |  | 120 days |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  | 1,107
Retained Earnings [Member] |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  | $ 1,107
Accounting Standards Update 2016-09 [Member] | Retained Earnings [Member] |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  | $ 1,100 |
Scenario, Forecast [Member] | Accounting Standards Update 2016-02 [Member] |  |  |  |  |
New Accounting Pronouncement Effect, Right of Use Assets |  |  | $ 13,200 |  |
New Accounting Pronouncement Effect, Lease Obligation Liability |  |  | $ 13,200 |  |
GME [Member] |  |  |  |  |
Variable Interest Entity, Financial or Other Support, Amount | $ 106,000 |  |  |  |
Notes Payable, Current | 106,000 | $ 106,000 |  |  |
Accrued Liabilities, Current | 43,900 | $ 43,846 |  |  |
Green Bay Acquisition and Davenport Acquisition [Member] |  |  |  |  |
Business Combination, Consideration Transferred | $ 269,900 |  |  |  |

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