Summary of Series B Convertible Preferred Stock and Accretion of Dividend (Detail) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Stockholders Equity [Line Items]
Dividends earned on Series B preferred stock	$ 248	$ 313
Series B Convertible Preferred Stock
Stockholders Equity [Line Items]
Balance at beginning of period	26,589	25,323
Dividends earned on Series B preferred stock	248	313
Balance at end of period	$ 26,837	$ 25,636
Number of shares at beginning of period	6,647	6,331
Cumulative dividends on Series B convertible preferred stock	62	78
Number of shares at end of period	6,709	6,409