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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule II - Valuation and Qualifying Accounts | MKS Instruments, Inc. SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS
|  |  |  |  | Additions |  |  |  |  |  |  |
Description |  | Balance at Beginning of Year |  |  | Acquisition Beginning Balance |  |  | Charged to Costs and Expenses |  |  | Charged to Other Accounts |  |  | Deductions & Write-offs |  |  | Balance at End of Year |
|  | (in thousands) |
Allowance for doubtful accounts: |  |  |
Years ended December 31, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 |  | $ | 5,243 |  |  | $ | 201 |  |  | $ | (728 | ) |  | $ | — |  |  | $ | (2,933 | ) |  | $ | 1,783 |
2018 |  | $ | 4,135 |  |  | $ | — |  |  | $ | 1,435 |  |  | $ | — |  |  | $ | (327 | ) |  | $ | 5,243 |
2017 |  | $ | 3,909 |  |  | $ | — |  |  | $ | 825 |  |  | $ | — |  |  | $ | (599 | ) |  | $ | 4,135 |
|  |  |  |  | Additions |  |  |  |  |  |  |
Description |  | Balance at Beginning of Year |  |  | Acquisition Beginning Balance |  |  | Charged to Costs and Expenses |  |  | Charged to Other Accounts |  |  | Deductions & Write-offs |  |  | Balance at End of Year |
|  | (in thousands) |
Allowance for sales returns: |  |  |
Years ended December 31, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 |  | $ | 1,033 |  |  | $ | — |  |  | $ | 200 |  |  | $ | — |  |  | $ | 162 |  |  | $ | 1,395 |
2018 |  | $ | 1,295 |  |  | $ | — |  |  | $ | 124 |  |  | $ | — |  |  | $ | (386 | ) |  | $ | 1,033 |
2017 |  | $ | 1,138 |  |  | $ | — |  |  | $ | (142 | ) |  | $ | — |  |  | $ | 299 |  |  | $ | 1,295 |
|  |  |  |  | Additions |  |  |  |  |  |  |
Description |  | Balance at Beginning of Year |  |  | Acquisition Beginning Balance |  |  | Charged to Costs and Expenses |  |  | Charged to Other Accounts |  |  | Deductions |  |  | Balance at End of Year |
|  | (in thousands) |
Valuation allowance on deferred tax asset: |  |  |
Years ended December 31, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 |  | $ | 17,936 |  |  | $ | 5,876 |  |  | $ | 4,934 |  |  | $ | — |  |  | $ | (1,386 | ) |  | $ | 27,360 |
2018 |  | $ | 13,629 |  |  | $ | — |  |  | $ | 4,825 |  |  | $ | — |  |  | $ | (518 | ) |  | $ | 17,936 |
2017 |  | $ | 12,527 |  |  | $ | — |  |  | $ | 1,603 |  |  | $ | — |  |  | $ | (501 | ) |  | $ | 13,629 |

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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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