Organization and Summary of Significant Accounting Policies - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Payables And Accruals [Abstract]
Inventory receipts	$ 4,302	$ 3,049
Payroll and other employee benefits	2,266	1,083
Paid time off	1,284	1,028
Deferred revenues	538	242
Operating leases	$ 475	$ 269
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Total	Total
Income and sales taxes	$ 415	$ 185
Restructuring	368	15
Warranties	257	285	$ 444
Employee stock purchase plan	253	224
Customer refunds for estimated returns	248	146
Professional fees and contractors	233	316
Real estate taxes	156	155
Finance leases	62	68
Other	260	251
Total	$ 11,117	$ 7,316