Note 6 - Debt - Short-term and Long-term Debt (Details) (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2026	Feb. 26, 2026	Dec. 31, 2025	Jul. 29, 2025
The February 18, 2026 Term Loan Agreement [Member]
Issuance costs	$ 600
The 4.500% Senior Notes Due in 2030 [Member]
Issuance costs			$ 0
Interest rate			4.50%	4.50%
The 5.125% Senior Note Due in 2036 [Member]
Issuance costs			$ 0
Interest rate			5.125%	5.125%
The 4.125% Senior Notes Due in 2029 [Member]
Interest rate	4.125%		4.125%
Unamortized premium, and net of unamortized discount and debt issuance costs	$ 4,100		$ 4,800
The 4.450% Senior Notes Due in 2031 [Member]
Interest rate	4.45%	4.45%	4.45%
Unamortized premium, and net of unamortized discount and debt issuance costs	$ 4,000		$ 0
The 5.750% Senior Notes Due in 2033 [Member]
Interest rate	5.75%		5.75%
Unamortized premium, and net of unamortized discount and debt issuance costs	$ 6,500		$ 7,000
The 5.250% Senior Notes Due in 2034 [Member]
Interest rate	5.25%		5.25%
Unamortized premium, and net of unamortized discount and debt issuance costs	$ 12,000		$ 12,700
The 5.250% Senior Notes Due in 2035 [Member]
Interest rate	5.25%		5.25%
Unamortized premium, and net of unamortized discount and debt issuance costs	$ 6,900		$ 7,300
The 5.125% Senior Notes Due in 2036 [Member]
Interest rate	5.125%	5.125%	5.125%
Unamortized premium, and net of unamortized discount and debt issuance costs	$ 5,000		$ 0
The 5.500% Senior Notes Due in 2045 [Member]
Interest rate	5.50%		5.50%
Unamortized premium, and net of unamortized discount and debt issuance costs	$ 3,400		$ 3,500
The 3.625% Senior Notes Due in 2050 [Member]
Interest rate	3.625%		3.625%
Unamortized premium, and net of unamortized discount and debt issuance costs	$ 8,700		$ 8,900