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Note 6 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%		21.00%
Deferred Tax Liabilities, Net	$ 102,700		$ 102,700
Income Tax Expense (Benefit)	4,483	$ 15,563	$ 13,701	$ 32,130
State and Local Jurisdiction [Member] | Tennessee Department of Revenue [Member]
Income Tax Expense (Benefit)	$ (1,300)

X

- Definition

Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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