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Restricted cash (Tables) | 6 Months Ended
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Jun. 30, 2020
Cash and Cash Equivalents [Abstract] |
Schedule of cash and cash equivalents | The following is a reconciliation of cash, cash equivalents and restricted cash as of June 30, 2020, December 31, 2019 and June 30, 2019:
| June 30, 2020 |  | December 31, 2019 |  | June 30, 2019
Cash and cash equivalents | $ | 2,382,655 |  |  | $ | 1,121,396 |  |  | $ | 782,884 |
Restricted cash | 260,466 |  |  | 178,951 |  |  | 187,401 |
Total cash, cash equivalents and restricted cash | $ | 2,643,121 |  |  | $ | 1,300,347 |  |  | $ | 970,285 |
Schedule of restricted cash and cash equivalents | The following is a reconciliation of cash, cash equivalents and restricted cash as of June 30, 2020, December 31, 2019 and June 30, 2019:
| June 30, 2020 |  | December 31, 2019 |  | June 30, 2019
Cash and cash equivalents | $ | 2,382,655 |  |  | $ | 1,121,396 |  |  | $ | 782,884 |
Restricted cash | 260,466 |  |  | 178,951 |  |  | 187,401 |
Total cash, cash equivalents and restricted cash | $ | 2,643,121 |  |  | $ | 1,300,347 |  |  | $ | 970,285 |

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