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, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Stockholders Equity [Line Items]
Dividends earned on Series B preferred stock	$ 233	$ 315	$ 481	$ 628
Series B Convertible Preferred Stock
Stockholders Equity [Line Items]
Balance at beginning of period	26,837	25,636	26,589	25,323
Dividends earned on Series B preferred stock	233	315	481	628
Balance at end of period	$ 27,070	$ 25,951	$ 27,070	$ 25,951
Number of shares at beginning of period	6,709	6,409	6,647	6,331
Cumulative dividends on Series B convertible preferred stock	58	79	120	157
Number of shares at end of period	6,767	6,488	6,767	6,488