Note 6 - Leases (Details Textual) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2022
USD ($)
ft²
|
Dec. 31, 2021
USD ($)
|
Jun. 30, 2020 |
|
| Operating Lease, Payments | $ | $ 1.3 | $ 1.4 | |
| HONG KONG | |||
| Area of Land (Square Foot) | 7,300 | ||
| Rolling Hills Estates [Member] | |||
| Area of Land (Square Foot) | 4,900 | ||
| Lessee, Operating Lease, Renewal Term (Year) | 5 years | ||
| Richmond, British Columbia [Member] | |||
| Area of Land (Square Foot) | 1,600 | ||
| Metuchen, New Jersey [Member] | |||
| Area of Land (Square Foot) | 2,000 | ||
| CHINA | |||
| Lessee, Number of Branches | 7 | ||
| X | ||||||||||
- Definition Represents the lessees' number of branches. No definition available.
|
| X | ||||||||||
- Definition Area of land held. No definition available.
|
| X | ||||||||||
- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|