Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ 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, 2022		113,165,000
Balance at Dec. 31, 2022		$ 11		$ 1,008,896		$ 160,740		$ 1,169,647
Dividends declared		0		0		(2,829)		(2,829)
Dividend equivalents declared on outstanding stock options		0		0		(288)		(288)
Compensation costs included in net income		0		4,054		0		4,054
Net income		$ 0		0		50,257		50,257
Exercise of warrants (in shares)		0
Exercise of warrants		$ 0		2		0		2
Net income		$ 0		0		50,257		50,257
Balance (in shares) at Mar. 31, 2023		113,177,000
Balance at Mar. 31, 2023		$ 11		1,013,100		207,880		1,220,991
Shares issued upon options being exercised (in shares)		12,000
Shares issued upon options being exercised		$ 0		148		0		148
Balance (in shares) at Dec. 31, 2022		113,165,000
Balance at Dec. 31, 2022		$ 11		1,008,896		160,740		1,169,647
Net income								82,083
Net income								82,083
Balance (in shares) at Jun. 30, 2023		113,386,000
Balance at Jun. 30, 2023		$ 11		1,018,810		236,589		$ 1,255,410
Shares issued upon options being exercised (in shares)								11,834
Balance (in shares) at Dec. 31, 2022		113,165,000
Balance at Dec. 31, 2022		$ 11		1,008,896		160,740		$ 1,169,647
Balance (in shares) at Dec. 31, 2023		128,421,000
Balance at Dec. 31, 2023		$ 13		1,189,424		363,284		$ 1,552,721
Shares issued upon options being exercised (in shares)								11,834
Balance (in shares) at Mar. 31, 2023		113,177,000
Balance at Mar. 31, 2023		$ 11		1,013,100		207,880		$ 1,220,991
Dividends declared		0		0		(2,830)		(2,830)
Dividend equivalents declared on outstanding stock options		0		0		(287)		(287)
Compensation costs included in net income		0		3,984		0		3,984
Net income		$ 0		0		31,826		31,826
Exercise of warrants (in shares)		150,000
Exercise of warrants		$ 0		1,726		0		1,726
Restricted shares issued to outside directors (in shares)	59,000
Restricted shares issued to outside directors	$ 0		$ 0		$ 0		$ 0
Net income		$ 0		0		31,826		31,826
Balance (in shares) at Jun. 30, 2023		113,386,000
Balance at Jun. 30, 2023		$ 11		1,018,810		236,589		1,255,410
Balance (in shares) at Dec. 31, 2023		128,421,000
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)
Repurchased shares under buyback program (in shares)		(566,000)
Repurchased shares under buyback program		$ 0		(8,851)		0		(8,851)
Compensation costs included in net income		0		3,798		0		3,798
Net income		0		0		6,438		6,438
Net income		$ 0		0		6,438		6,438
Balance (in shares) at Mar. 31, 2024		127,855,000
Balance at Mar. 31, 2024		$ 13		1,184,371		364,053		1,548,437
Balance (in shares) at Dec. 31, 2023		128,421,000
Balance at Dec. 31, 2023		$ 13		1,189,424		363,284		1,552,721
Net income								36,155
Net income								36,155
Balance (in shares) at Jun. 30, 2024		127,496,000
Balance at Jun. 30, 2024		$ 13		1,182,302		388,126		$ 1,570,441
Shares issued upon options being exercised (in shares)								0
Balance (in shares) at Mar. 31, 2024		127,855,000
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)
Repurchased shares under buyback program (in shares)		(413,000)
Repurchased shares under buyback program		$ 0		(5,845)		0		(5,845)
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)	54,000
Restricted shares issued to outside directors	$ 0		$ 0		$ 0		$ 0
Net income		$ 0		0		29,717		29,717
Balance (in shares) at Jun. 30, 2024		127,496,000
Balance at Jun. 30, 2024		$ 13		$ 1,182,302		$ 388,126		$ 1,570,441