Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)	Total		Common Stock [Member]	Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance, shares at Dec. 31, 2022			12,756,885
Common stock repurchased, shares	(49,261)		(49,261)
Restricted stock units converted to common stock, shares			101,757
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			12,300
Balance, shares at Jun. 30, 2023			12,821,681
Balance at Dec. 31, 2022	$ 1,624,000,000		$ 100,000	$ 245,700,000	$ 1,381,100,000	$ (2,900,000)
Net income (loss)	121,700,000		0	0	121,700,000	0
Other comprehensive loss	200,000		0	0	0	200,000
Stock-based compensation	19,700,000		0	19,700,000	0	0
Common stock repurchased, value	(22,700,000)	[1]	0	(7,800,000)	(14,900,000)	0
Stock Issued During Period, Value, Stock Options Exercised	4,100,000			4,100,000
Balance at Jun. 30, 2023	$ 1,747,000,000		$ 100,000	261,700,000	1,487,900,000	(2,700,000)
Balance, shares at Mar. 31, 2023			12,836,907
Common stock repurchased, shares	(16,226)		(16,226)
Restricted stock units converted to common stock, shares			1,000
Balance, shares at Jun. 30, 2023			12,821,681
Balance at Mar. 31, 2023	$ 1,723,400,000		$ 100,000	252,100,000	1,473,300,000	(2,100,000)
Net income (loss)	22,200,000		0	0	22,200,000	0
Other comprehensive loss	(600,000)		0	0	0	(600,000)
Stock-based compensation	9,800,000		0	9,800,000	0	0
Common stock repurchased, value	(7,800,000)	[1]	0	(200,000)	(7,600,000)	0
Balance at Jun. 30, 2023	$ 1,747,000,000		$ 100,000	261,700,000	1,487,900,000	(2,700,000)
Balance, shares at Dec. 31, 2023	12,522,397		12,522,397
Common stock repurchased, shares	(462,045)		(462,045)
Restricted stock units converted to common stock, shares			8,350
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			42,426
Balance, shares at Jun. 30, 2024	12,111,128		12,111,128
Balance at Dec. 31, 2023	$ 1,753,700,000		$ 100,000	279,000,000.0	1,475,600,000	(1,000,000.0)
Net income (loss)	17,200,000		0	0	17,200,000	0
Other comprehensive loss	(200,000)		0	0	0	(200,000)
Stock-based compensation	21,500,000		0	21,500,000	0	0
Common stock repurchased, value	(251,900,000)	[1]	0	(1,300,000)	(250,600,000)	0
Stock Issued During Period, Value, Stock Options Exercised	14,600,000			14,600,000
Balance at Jun. 30, 2024	$ 1,554,900,000		$ 100,000	313,800,000	1,242,200,000	(1,200,000)
Balance, shares at Mar. 31, 2024			12,220,580
Common stock repurchased, shares	(110,677)		(110,677)
Restricted stock units converted to common stock, shares			1,225
Balance, shares at Jun. 30, 2024	12,111,128		12,111,128
Balance at Mar. 31, 2024	$ 1,652,200,000		$ 100,000	303,500,000	1,349,800,000	(1,200,000)
Net income (loss)	(47,100,000)		0	0	(47,100,000)	0
Stock-based compensation	10,600,000		0	10,600,000	0	0
Common stock repurchased, value	(60,800,000)	[1]	0	(300,000)	(60,500,000)	0
Balance at Jun. 30, 2024	$ 1,554,900,000		$ 100,000	$ 313,800,000	$ 1,242,200,000	$ (1,200,000)

[1] Total cost of repurchases includes excise tax.