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Restricted cash (Tables)
6 Months Ended
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, 2020December 31, 2019June 30, 2019
Cash and cash equivalents$2,382,655  $1,121,396  $782,884  
Restricted cash260,466  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, 2020December 31, 2019June 30, 2019
Cash and cash equivalents$2,382,655  $1,121,396  $782,884  
Restricted cash260,466  178,951  187,401  
Total cash, cash equivalents and restricted cash$2,643,121  $1,300,347  $970,285