Stock-Based Compensation Expense Related to Stock Options, RSUs and PSUs (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Expense	$ 200
Stock-Based Compensation Expense	(5,360)	$ (989)	$ (7,854)	$ (2,973)
Stock Options and Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Expense	5,360	989	7,854	2,973
Stock Options and Restricted Stock Units | Continuing Operations
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Expense	1,096	514	2,600	1,505
Stock Options and Restricted Stock Units | Discontinued Operations
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Expense	4,264	475	5,254	1,468
Stock Options and Restricted Stock Units | Cost of revenue
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Expense	5	8	17	27
Stock Options and Restricted Stock Units | Research and Development Expense
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Expense	61	37	138	74
Stock Options and Restricted Stock Units | Selling and Marketing Expense
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Expense	182	124	743	365
Stock Options and Restricted Stock Units | General and Administrative Expense
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-Based Compensation Expense	$ 848	$ 345	$ 1,702	$ 1,039