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Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts | Valuation and qualifying accounts The following table presents the information required by Rule 12-09 of Regulation S-X in regards to valuation and qualifying accounts for each of the periods presented:
Description |  | Balance at beginning of period |  | Additions (i) |  | Deductions (ii) |  | Translation |  | Balance at end of period
Year ended December 31, 2017: |  |  |  |  |  |  |  |  |  |
Deducted from assets accounts: |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts (iii) |  | $ | 16,367 |  |  | $ | 6,386 |  |  | $ | (1,244 | ) |  | $ | (42 | ) |  | $ | 21,467 |
Valuation allowance on deferred tax assets |  | 290,620 |  |  | 8,382 |  |  | (27,515 | ) |  | 164 |  |  | 271,651 |
Reported as liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for contingencies |  | 18,112 |  |  | 36,160 |  |  | (26,137 | ) |  | (179 | ) |  | 27,956 |
Total |  | $ | 325,099 |  |  | $ | 50,928 |  |  | $ | (54,896 | ) |  | $ | (57 | ) |  | $ | 321,074 |
Year ended December 31, 2016: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deducted from assets accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 12,768 |  |  | $ | 5,367 |  |  | $ | (1,647 | ) |  | $ | (121 | ) |  | $ | 16,367 |
Valuation allowance on deferred tax assets |  | 297,891 |  |  | 36,778 |  |  | (24,967 | ) |  | (19,082 | ) |  | 290,620 |
Reported as liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for contingencies |  | 20,578 |  |  | 28,577 |  |  | (32,049 | ) |  | 1,006 |  |  | 18,112 |
Total |  | $ | 331,237 |  |  | $ | 70,722 |  |  | $ | (58,663 | ) |  | $ | (18,197 | ) |  | $ | 325,099 |
Year ended December 31, 2015: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deducted from assets accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 9,373 |  |  | $ | 6,656 |  |  | $ | (2,615 | ) |  | $ | (646 | ) |  | $ | 12,768 |
Valuation allowance on deferred tax assets |  | 301,012 |  |  | 49,879 |  |  | (401 | ) |  | (52,599 | ) |  | 297,891 |
Reported as liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for contingencies |  | 12,204 |  |  | 37,729 |  |  | (24,858 | ) |  | (4,497 | ) |  | 20,578 |
Total |  | $ | 322,589 |  |  | $ | 94,264 |  |  | $ | (27,874 | ) |  | $ | (57,742 | ) |  | $ | 331,237 |
(i) | Additions in valuation allowance on deferred tax assets are charged to income tax expense.
Additions in provision for contingencies are explained as follows: Fiscal years 2017, 2016 and 2015 – Relate to the accrual of $36,160, $28,577 and $37,729, respectively. See Note 18 for details.
(ii) | Deductions in valuation allowance on deferred tax assets are charged to income tax expense.
Deductions in provision for contingencies are explained as follows: Corresponds to the settlements and reclassifications amounting to $25,427 and $710, respectively, during fiscal year 2017; $20,554 and $11,495, respectively, during fiscal year 2016; and $23,415 and $1,443, respectively, during fiscal year 2015; as discussed in Note 18.
(iii) | At December 31, 2017, presented in the consolidated balance sheet as follow: $19,791 within Accounts and notes receivable, net and $1,676 within Other receivables.

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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