Stockholders' equity (Details) - shares	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Stockholders' Equity Note [Abstract]
Shares of common stock authorized	400,000,000
Shares of common stock issued and outstanding	170,537,867	172,203,443
Shares of preferred stock authorized	100,000,000.0
Shares of preferred stock issued and outstanding	0
Number of "excess stock" authorized (in shares)	200,000,000.0
Number of excess stock authorized issued and outstanding (in shares)	0