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Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2019
Valuation And Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts | GENTHERM INCORPORATED SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS For the Years Ended December 31, 2019, 2018 and 2017 (In thousands)
Description |  | Balance at Beginning of Period |  |  | Charged to Costs and Expenses |  |  | Charged to Other Accounts |  |  | Deductions from Reserves |  |  | Balance at End of Period |
Allowance for Doubtful Accounts |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year Ended December 31, 2017 |  |  | 1,391 |  |  |  | 1,239 |  |  |  | 51 |  |  |  | (1,708 | ) |  |  | 973 |
Year Ended December 31, 2018 |  |  | 973 |  |  |  | 1,005 |  |  |  | (121 | ) |  |  | (1,006 | ) |  |  | 851 |
Year Ended December 31, 2019 |  |  | 851 |  |  |  | 969 |  |  |  | (8 | ) |  |  | (619 | ) |  |  | 1,193 |
Allowance for Deferred Income Tax Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year Ended December 31, 2017 |  |  | 19,304 |  |  |  | 6,700 |  |  |  | 1,574 |  |  |  | — |  |  |  | 27,578 |
Year Ended December 31, 2018 |  |  | 27,578 |  |  |  | — |  |  |  | (14,009 | ) |  |  | (3,592 | ) |  |  | 9,977 |
Year Ended December 31, 2019 |  |  | 9,977 |  |  |  | 19,277 |  |  |  | (491 | ) |  |  | — |  |  |  | 28,763 |
Reserve for Inventory |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year Ended December 31, 2017 |  |  | 4,790 |  |  |  | 3,521 |  |  |  | 302 |  |  |  | (726 | ) |  |  | 7,887 |
Year Ended December 31, 2018 |  |  | 7,887 |  |  |  | 2,712 |  |  |  | (1,047 | ) |  |  | (3,282 | ) |  |  | 6,270 |
Year Ended December 31, 2019 |  |  | 6,270 |  |  |  | 1,679 |  |  |  | (56 | ) |  |  | (1,820 | ) |  |  | 6,073 |

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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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- References No definition available. + Details
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