Income Taxes - Component of Income Taxes Expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Components of income tax expense (benefit):
Current income tax expense, U.S. federal	$ 67	$ 266	$ 247
Current income tax expense, State	101	74	60
Current income tax expense	168	340	307
Deferred income taxes (benefit), U.S. federal	(16,217)	13,720	(7,306)
Deferred income taxes (benefit), State	(4)	(3)	(2)
Deferred income taxes (benefit)	(16,221)	13,718	(7,308)
Deferred Income Tax Expense Benefit Net Of U T P Change	(16,221)	13,717	(7,308)
Income tax expense (benefit)	$ (16,053)	$ 14,057	$ (7,001)