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Supplemental Consolidated Financial Statement Information - Allowance for Doubtful Accounts (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($)
Allowance for doubtful accounts |
Beginning Balance | $ (250,000)
Additional provisions to allowance | (1,625,000)
Ending Balance | (250,000)
Accounts Receivable |
Allowance for doubtful accounts |
Write-offs against allowance | 191,000
Notes Receivable |
Allowance for doubtful accounts |
Write-offs against allowance | $ 1,434,000

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