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v3.19.2

Retrospective restatement of the 2016 and 2017 financial statements (Schedule of Adjustment in Loans Payable) (Details) - MXN ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Statement Line Items [Line Items] |  |  |
Beginning Balance, Loans payable | $ 980,807 | $ 1,010,159 | $ 1,012,667
Transfer of accounts receivable for presentation |  |  | 1,435
Transfer of loans payable by presentation |  |  | (3,943)
Transactions of the year | 0 | 0 |
Interest | 7,023 | 6,040 |
Difference in changes | (4,762) | (35,392) |
Payment | (983,068) |  |
Ending Balance, Loans payable |  | 980,807 | 1,010,159
Industrias CH, S.A.B. de C.V. [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Beginning Balance, Loans payable | 226,820 | 222,626 | 221,628
Transfer of accounts receivable for presentation |  |  | 998
Interest | 5,570 | 4,194 |
Difference in changes |  |  |
Payment | (232,390) |  |
Ending Balance, Loans payable | 0 | 226,820 | 222,626
Tuberias Procarsa, S.A. de C.V. [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Beginning Balance, Loans payable | 591,789 | 618,118 | 622,061
Transfer of loans payable by presentation |  |  | (3,943)
Interest | 1,321 | 1,449 |
Difference in changes | (2,363) | (27,778) |
Payment | (590,747) |  |
Ending Balance, Loans payable | 0 | 591,789 | 618,118
Procarsa Tube and Pipe Co. [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Beginning Balance, Loans payable | 59,648 | 62,303 | 62,303
Interest | 132 | 146 |
Difference in changes | (370) | (2,801) |
Payment | (59,410) |  |
Ending Balance, Loans payable | 0 | 59,648 | 62,303
Pytsa Industrial de Mexico, S.A. de C.V. [Member] |  |  |
Statement Line Items [Line Items] |  |  |
Beginning Balance, Loans payable | 102,550 | 107,112 | 106,675
Transfer of accounts receivable for presentation |  |  | 437
Interest |  | 251 |
Difference in changes | (2,029) | (4,813) |
Payment | (100,521) |  |
Ending Balance, Loans payable | $ 0 | $ 102,550 | $ 107,112

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