Earnings (Loss) per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings (Loss) per Share
Net income (loss)	$ 22,652	$ 7,119	$ (9,396)	$ (13,403)	$ 9,816	$ 352,759	$ 20,375	$ 349,172
Less: Net income allocated to participating securities	1,083			0			983	15,771
Net income (loss) available to common stockholders	$ 21,569			$ (13,403)			$ 19,392	$ 333,401
Common shares:
Common shares outstanding - basic (in shares)	39,783			39,063			39,608	38,911
Dilutive effect of potential common shares (in shares)	0			0			0	0
Common shares outstanding - diluted (in shares)	39,783			39,063			39,608	38,911
Net earnings (loss) per share - Basic (in dollars per shares)	$ 0.54			$ (0.34)			$ 0.49	$ 8.57
Net earnings (loss) per share - Diluted (in dollars per shares)	$ 0.54			$ (0.34)			$ 0.49	$ 8.57