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Schedule I - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Allowance for Doubtful Accounts (Deducted from Accounts Receivable) [Member] |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Balance at Beginning of Period | $ 2,010,721 | $ 1,623,408
Charged to Costs and Expenses | 692,460 | 2,842,941
Deductions | 557,582 | 2,455,628
Balance at End of Period | 2,145,599 | 2,010,721
Valuation Allowance for Deferred Tax Assets [Member] |  |
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Balance at Beginning of Period | 3,760,454 | 328,170
Charged to Costs and Expenses | 87,665 | 3,446,579
Deductions | 3,536,905 | 14,295
Balance at End of Period | $ 311,214 | $ 3,760,454

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