Condensed Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Allowance for accounts receivable	$ 1.0	$ 0.6
Held-to-maturity, allowance for credit loss	$ 0.2	$ 0.2
Preferred stock, par value (usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	50,000,000	50,000,000
Preferred stock, shares issued (shares)	0	0
Preferred stock, shares outstanding (shares)	0	0
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	300,000,000	300,000,000
Common stock, shares issued (shares)	43,799,949	43,630,211
Common stock shares outstanding (shares)	36,465,192	36,350,425
Treasury stock (shares)	7,334,757	7,279,786