Detail of Interest and Other Income (Expense), Net (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Income And Expenses [Abstract]
Interest income	$ 17	$ 334
Miscellaneous income	9	679
Other	$ (26)	2
Total interest and other income (expense), net		$ 1,015