Note 11 - Stock-based Compensation - Share Based Compensation Performance Shares Award Outstanding (Details) - Performance Shares [Member] shares in Thousands	12 Months Ended
	Dec. 31, 2022 $ / shares shares
Balance, Shares (in shares) | shares	1,246
Balance, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 41,230
Granted, Shares (in shares) | shares	183
Granted, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 96,630
Effect of vesting multiplier, Shares (in shares) | shares	642
Effect of vesting multiplier (in dollars per share) | $ / shares
Vested, Shares (in shares) | shares	(1,086)
Vested, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 20,380
Balance, Shares (in shares) | shares	985
Balance, Weighted average grant date fair value (in dollars per share) | $ / shares	$ 60,150