Commitments and Contingencies- Right of Use Assets and Liabilities (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($) ft²	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Right-of-use assets and lease liabilities capitalized		7.00%	5.50%	7.00%	5.50%
Lease liability		$ 172		$ 172		$ 138
Lease liabilities, long-term		87		87		37
ROU asset		$ 252		$ 252		$ 163
Right of use assets and liabilities
Weighted-average remaining lease term		1 year 3 months 18 days		1 year 3 months 18 days
Operating lease costs		$ 61	$ 84	$ 122	$ 166
Period Of Warranty From Date Of Shipment				1 year
Extended warranty minimum period				1 year
Chief Executive Officer
Right of use assets and liabilities
Period for Severance Payment				12 months
JAPAN
Area of sublease space | ft²	500
Sublease rent per month	$ 1
Singapore
Area of sublease space | ft²	275
Hong Kong
Area of sublease space | ft²	3,000
Sublease rent per month	$ 2
Cost of revenue
Right of use assets and liabilities
Operating lease costs		30	30	$ 62	59
Operating expenses
Right of use assets and liabilities
Operating lease costs		$ 31	$ 54	$ 60	$ 107
Space located in Irvine, California for executive offices, sales, finance and administration
Area of sublease space | ft²	4,351
Sublease rent per month	$ 6
Percentage of annual increase in sublease rent	3.00%
Shenzhen, China manufacturing facility
Area of sublease space | ft²	14,476
Sublease rent per month	$ 8
Shenzhen, China manufacturing facility | Singapore
Sublease rent per month	$ 1
Office space located in Los Angels, California
Area of sublease space | ft²	425
Sublease rent per month	$ 1