Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Aug. 22, 2020
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Deferred Tax Assets, Valuation Allowance, Total	$ 0	$ 0
Deferred Income Tax Liabilities, Net, Total	55,802	$ 38,898	$ 39,946
State and Local Jurisdiction [Member] | Texas Margin Tax [Member]
Deferred Income Tax Liabilities, Net, Total	$ 1,800