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Consolidated statements of cash flows note
 12 Months Ended
Dec. 31, 2018
Disclosure of Consolidated statements of cash flows [Abstract]  
Disclosure of cash flow statement [text block]
Note 21 - Consolidated statements of cash flows:
 
As of December 31, 2017 and 2018, the analysis of net debt and movements in net debt is presented below:
 
 
 
Long-term
 
 
Bank
 
 
 
Debt
 
 
Loans
 
 
 
2017
 
 
2018
 
 
2017
 
 
2018
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Accounts payable
 
$
340,288
 
 
$
324,590
 
 
$
 
 
 
 
 
 
Bank loans (Note 11)
 
 
 
 
 
 
 
 
 
 
173,471
 
 
$
175,515
 
Bank loans (Note 11)
 
 
 
 
 
 
 
 
 
 
10,321,382
 
 
 
7,042,598
 
Long-term debt (Note 12)
 
 
7,149,177
 
 
 
6,957,678
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balances at December 31
 
$
7,489,465
 
 
$
7,282,268
 
 
$
10,494,853
 
 
$
7,218,113
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balances at January 1 of net debt
 
$
 
 
 
$
7,489,465
 
 
$
4,460,776
 
 
$
10,494,853
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Acquisition of Aerostar and Airplan
 
 
7,182,963
 
 
 
 
 
 
 
3,424,717
 
 
 
 
 
Interest expense
 
 
295,834
 
 
 
475,110
 
 
 
322,996
 
 
 
696,641
 
Proceeds from bank loans
 
 
 
 
 
 
 
 
 
 
8,000,000
 
 
 
 
 
Interest paid
 
 
(277,068
)
 
 
(646,418
)
 
 
(351,152
)
 
 
(492,653
)
Payments of the long-term debt and bank loan
 
 
(102,907
)
 
 
 
 
 
 
(5,339,338
)
 
 
(3,090,124
)
Foreign currency translation
 
 
390,643
 
 
 
(35,889
)
 
 
217,385
 
 
 
(166,301
)
Exchange (income) / loss on foreign currency
 
 
 
 
 
 
 
 
 
 
(240,531
)
 
 
(224,303
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Balances at December 31
 
$
7,489,465
 
 
$
7,282,268
 
 
$
10,494,853
 
 
$
7,218,113