Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member] Outside Directors [Member]	Common Stock [Member]	Additional Paid-in Capital [Member] Outside Directors [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member] Outside Directors [Member]	Retained Earnings [Member]	Outside Directors [Member]	Total
Balance (in shares) at Dec. 31, 2023		128,421
Balance at Dec. 31, 2023		$ 13		$ 1,189,424		$ 363,284		$ 1,552,721
Dividends declared		0		0		(5,137)		(5,137)
Dividend equivalents declared on outstanding stock options		0		0		(532)		(532)
Compensation costs included in net income		0		3,798		0		3,798
Net income		$ 0		0		6,438		6,438
Repurchased shares under buyback program (in shares)		(566)
Repurchased shares under buyback program		$ 0		(8,851)		0		(8,851)
Balance (in shares) at Mar. 31, 2024		127,855
Balance at Mar. 31, 2024		$ 13		1,184,371		364,053		1,548,437
Balance (in shares) at Dec. 31, 2023		128,421
Balance at Dec. 31, 2023		$ 13		1,189,424		363,284		1,552,721
Net income								36,155
Balance (in shares) at Jun. 30, 2024		127,496
Balance at Jun. 30, 2024		$ 13		1,182,302		388,126		1,570,441
Balance (in shares) at Dec. 31, 2023		128,421
Balance at Dec. 31, 2023		$ 13		1,189,424		363,284		1,552,721
Balance (in shares) at Dec. 31, 2024		126,067
Balance at Dec. 31, 2024		$ 13		1,166,609		435,834		1,602,456
Balance (in shares) at Mar. 31, 2024		127,855
Balance at Mar. 31, 2024		$ 13		1,184,371		364,053		1,548,437
Dividends declared		0		0		(5,114)		(5,114)
Dividend equivalents declared on outstanding stock options		0		0		(530)		(530)
Compensation costs included in net income		0		3,775		0		3,775
Net income		$ 0		0		29,717		29,717
Exercise of warrants (in shares)		0
Exercise of warrants		$ 0		1		0		1
Restricted shares issued to outside directors (in shares)	54
Restricted shares issued to outside directors	$ 0		$ 0		$ 0		$ 0
Repurchased shares under buyback program (in shares)		(413)
Repurchased shares under buyback program		$ 0		(5,845)		0		(5,845)
Balance (in shares) at Jun. 30, 2024		127,496
Balance at Jun. 30, 2024		$ 13		1,182,302		388,126		1,570,441
Balance (in shares) at Dec. 31, 2024		126,067
Balance at Dec. 31, 2024		$ 13		1,166,609		435,834		1,602,456
Dividends declared		0		0		(5,043)		(5,043)
Dividend equivalents declared on outstanding stock options		0		0		(531)		(531)
Compensation costs included in net income		0		177		0		177
Net income		$ 0		0		36,335		36,335
Balance (in shares) at Mar. 31, 2025		126,067
Balance at Mar. 31, 2025		$ 13		1,166,786		466,595		1,633,394
Balance (in shares) at Dec. 31, 2024		126,067
Balance at Dec. 31, 2024		$ 13		1,166,609		435,834		1,602,456
Net income								62,511
Balance (in shares) at Jun. 30, 2025		126,132
Balance at Jun. 30, 2025		$ 13		1,166,875		487,198		1,654,086
Balance (in shares) at Mar. 31, 2025		126,067
Balance at Mar. 31, 2025		$ 13		1,166,786		466,595		1,633,394
Dividends declared		0		0		(5,042)		(5,042)
Dividend equivalents declared on outstanding stock options		0		0		(531)		(531)
Compensation costs included in net income		0		88		0		88
Net income		$ 0		0		26,176		26,176
Exercise of warrants (in shares)		0
Exercise of warrants		$ 0		1		0		1
Restricted shares issued to outside directors (in shares)	65
Restricted shares issued to outside directors	$ 0		$ 0		$ 0		$ 0
Balance (in shares) at Jun. 30, 2025		126,132
Balance at Jun. 30, 2025		$ 13		$ 1,166,875		$ 487,198		$ 1,654,086