Summary of Calculations for Basic Net Income (Loss) per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings Per Share [Abstract]
Net loss from continuing operations	$ (6,042)	$ (6,923)	$ (10,831)	$ (12,305)
Total income from discontinued operations, net of tax		707		1,531
Net loss	(6,042)	(6,216)	(10,831)	(10,774)
Less: accretion of Series B convertible preferred stock dividends	(205)	(233)	(410)	(481)
Net income (loss) available to common stockholders	$ (6,247)	$ (6,449)	$ (11,241)	$ (11,255)
Weighted average common shares outstanding - basic	23,760	23,459	23,679	23,413
Weighted average common shares outstanding - diluted	23,760	23,459	23,679	23,413
Basic and diluted net income (loss) per common share:
Continuing operations - Basic	$ (0.26)	$ (0.31)	$ (0.47)	$ (0.55)
Continuing operations - Diluted	(0.26)	(0.31)	(0.47)	(0.55)
Discontinued operations, net of tax - Basic		0.03		0.07
Discontinued operations, net of tax - Diluted		0.03		0.07
Net income (loss) per common share - basic	(0.26)	(0.27)	(0.47)	(0.48)
Net income (loss) per common share - diluted	$ (0.26)	$ (0.27)	$ (0.47)	$ (0.48)