Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2021	Sep. 01, 2021	Aug. 09, 2021	May 03, 2021
Income Tax Expense (Benefit), Total	$ (4,988)	$ (0)	$ (17,540)	$ (0)
Effective Income Tax Rate Reconciliation, Percent, Total	98.00%		161.00%
Discrete Tax Benefit			$ 8,500
Stock Compensation Windfall Tax Benefits	$ 3,100		$ 6,300
Effective Income Tax Rate Reconciliation, Before Discrete Items, Percent	18.00%
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
Sexton Acquisition [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities						$ 1,284	$ 1,300
Forecast [Member]
Deferred Tax Assets, Valuation Allowance, Total					$ 1,200