Note 1 - Nature of Operations and Summary of Significant Accounting Policies - Earnings Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Net income available to common stockholders		$ 334,661	$ 180,656	$ 97,185
Weighted average outstanding shares of common stock, basic (in shares)		50,053	52,452	51,591
Dilutive effect of options, warrants and stock awards (in shares)		379	619	1,346
Weighted average common stock and equivalents (in shares)		50,432	53,071	52,937
Basic income per common share (in dollars per share)		$ 6.69	$ 3.44	$ 1.88
Diluted income per common share (in dollars per share)		$ 6.64	$ 3.4	$ 1.84
Incremental "in-the-money" options, warrants, and restricted stock units outstanding at the end of the period (in shares)	[1]	667	856	1,674

[1] For years ended December 31, 2023, 2022 and 2021 we also had 861, 5,923 and 5,923 shares respectively, of “out-of- the-money” warrants outstanding at the end of each period.