Note 11 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2024	Jun. 30, 2024	Jun. 30, 2023
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	21.00%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent			5.00%	4.00%
Effective Income Tax Rate Reconciliation, Deduction, Percent			1.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent			2.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent				1.00%
Effective Income Tax Rate Reconciliation, Discrete Item, Percent				6.00%
Income Taxes Paid, Net			$ 85
Proceeds from Income Tax Refunds	$ 23
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	282		282
Operating Loss Carryforwards That Will Not Be Realized	$ 201		$ 201
Forecast [Member] | Minimum [Member] | Subsequent Event [Member]
Income Taxes Paid, Net		$ 92
Forecast [Member] | Maximum [Member] | Subsequent Event [Member]
Income Taxes Paid, Net		$ 102