Summary of Series B Convertible Preferred Stock and Accretion of Dividend (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Stockholders Equity [Line Items]
Dividends earned on Series B preferred stock	$ 205	$ 233	$ 410	$ 481
Series B Convertible Preferred Stock
Stockholders Equity [Line Items]
Balance at beginning of period	27,677	26,837	27,472	26,589
Dividends earned on Series B preferred stock	205	233	410	481
Balance at end of period	$ 27,882	$ 27,070	$ 27,882	$ 27,070
Number of shares at beginning of period	6,919	6,709	6,868	6,647
Cumulative dividends on Series B convertible preferred stock	52	58	103	120
Number of shares at end of period	6,971	6,767	6,971	6,767