Accounts payable and accrued expenses (Tables)

12 Months Ended

Dec. 31, 2019

Accounts payable and accrued expenses [Abstract]

Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses at December 31, 2019 and 2018, are shown as follows:

	2019		2018
General expenses	$	212,595	$	149,621
Operating expenses		96,004		45,187
Purchased services		95,470		92,176
Taxes payable		37,637		11,018
Salaries and wages		3,256		1,404
Others		54,567		58,117
	$	499,529	$	357,523