Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	May 03, 2021
Income Tax Expense (Benefit), Total	$ (12,552)	$ (0)	$ (12,552)	$ (0)
Effective Income Tax Rate Reconciliation, Percent, Total			217.00%
Discrete Tax Benefit			$ 8,500
Stock Compensation Windfall Tax Benefits			$ 3,200
Effective Income Tax Rate Reconciliation, Before Discrete Items, Percent			20.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount			$ (8,500)
GCI Acquisition [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities					$ 23,526