Note 3 - Stock-based Compensation - RSU Summary (Details) - Time-based RSUs, PSUs and MSUs [Member] shares in Thousands	3 Months Ended
	Mar. 31, 2026 $ / shares shares
Balance (in shares) | shares	771
Outstanding, weighted average (in dollars per share) | $ / shares	$ 535.78
Granted (in shares) | shares	208	[1]
Granted, weighted average (in dollars per share) | $ / shares	$ 958.65
Vested (in shares) | shares	(64)
Vested, weighted average (in dollars per share) | $ / shares	$ 398.06
Forfeited (in shares) | shares	(14)
Forfeited, weighted average (in dollars per share) | $ / shares	$ 543.83
Balance (in shares) | shares	901
Outstanding, weighted average (in dollars per share) | $ / shares	$ 677.43

[1] Amount reflects the number of awards that may ultimately be earned based on management’s probability assessment of the achievement of performance conditions at each reporting period.