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Allowance for Doubtful Accounts | 12 Months Ended
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Dec. 31, 2019
Allowance for Doubtful Accounts [Abstract] |
Allowance for Doubtful Accounts | Allowance for Doubtful Accounts The activity in the allowance for doubtful accounts was as follows during the years ended December 31, 2019 and 2018:
| 2019 |  | 2018
Balance at the beginning of the year | $ | 63,727 |  |  | $ | 83,789 |
Provision/(recoveries) for bad debts | 189,441 |  |  | (14,000) |
Charge-offs | (28,168) |  |  | (6,062) |
Balance at the end of the year | $ | 225,000 |  |  | $ | 63,727 |

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