Notes Receivable - Summary of Notes Receivable (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: notes receivable, current	$ (109)	$ (264)
Notes receivable, long term	0	91
Debt instruments held	109	355
NWCS And Seven Point Notes [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Debt instruments held	$ 109	$ 355