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Investments - Summary of Gross Unrealized Losses and Fair Value of Available-For-Sale Investment Securities in Unrealized Loss Position (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Estimated Fair Value	$ 62,197	$ 84,390
Less Than 12 Months, Unrealized Losses	(59)	(108)
Total, Estimated Fair Value	62,197	84,390
Total, Unrealized Losses	(59)	(108)
Government Sponsored Enterprises Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Less Than 12 Months, Estimated Fair Value	62,197	84,390
Less Than 12 Months, Unrealized Losses	(59)	(108)
Total, Estimated Fair Value	62,197	84,390
Total, Unrealized Losses	$ (59)	$ (108)

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