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Contract Assets and Contract Liabilities (Tables) | 3 Months Ended
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Mar. 31, 2021
Contract Assets and Contract Liabilities [Abstract] |
Summary of costs and estimated earnings on uncompleted contracts |
|  |  | 2021 |  |  | 2020 |
| Costs incurred on uncompleted contracts |  | $ | 6,280,201 |  |  | $ | 4,572,581 |
| Estimated earnings to date on uncompleted contracts |  |  | (350,587 | ) |  |  | 872,302 |
| Gross contract assets |  |  | 5,929,614 |  |  |  | 5,444,883 |
| Less: billings to date |  |  | (5,160,365 | ) |  |  | (5,916,487 | )
| Net contract assets (liabilities), on uncompleted contracts |  | $ | 769,249 |  |  | $ | (471,604 | )
Summary of condensed consolidated balance sheets |
|  |  | 2021 |  |  | 2020 |
| Contract assets |  | $ | 1,902,577 |  |  | $ | 1,303,136 |
| Contract liabilities |  |  | (1,133,328 | ) |  |  | (1,774,740 | )
| Net contract assets (liabilities) |  | $ | 769,249 |  |  | $ | (471,604 | )

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- Definition Tabular disclosure of long-term contract or program. + References No definition available. + Details
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