SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Warranty Reserve (Details) |
3 Months Ended |
|---|---|
Mar. 31, 2021 | |
| SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES | |
| Standard assurance warranty period | 1 year |
| Internationally warranty period | 13 months |
| X | ||||||||||
- Definition The term of international warranty period. No definition available.
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| X | ||||||||||
- Definition Term of standard assurance warranty. No definition available.
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| X | ||||||||||
- References No definition available.
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