Summary of Business and Significant Accounting Principles - Warranty Accrual (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Movement in Standard Product Warranty Accrual [Roll Forward] | ||
| Balance, beginning of year | $ 6,001,864 | $ 7,058,769 |
| Accrual for warranty (1) | 2,115,762 | 92,191 |
| Warranty costs incurred | (2,717,626) | (1,149,096) |
| Balance, end of year | $ 5,400,000 | $ 6,001,864 |
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase in the standard product warranty accrual from warranties issued. Excludes extended product warranties. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Standard Product Warranty Accrual, Costs Incurred No definition available.
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