XML 54 R31.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
--- | ---
Dec. 31, 2018
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, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2018 |  | $ | 4,135 |  |  | $ | — |  |  | $ | 1,435 |  |  | $ | — |  |  | $ | (327 | ) |  | $ | 5,243 |
2017 |  | $ | 3,909 |  |  | $ | — |  |  | $ | 825 |  |  | $ | — |  |  | $ | (599 | ) |  | $ | 4,135 |
2016 |  | $ | 1,760 |  |  | $ | 1,292 |  |  | $ | 1,109 |  |  | $ | (66 | ) |  | $ | (186 | ) |  | $ | 3,909 |
|  |  |  |  | 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, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2018 |  | $ | 1,295 |  |  | $ | — |  |  | $ | 124 |  |  | $ | — |  |  | $ | (386 | ) |  | $ | 1,033 |
2017 |  | $ | 1,138 |  |  | $ | — |  |  | $ | (142 | ) |  | $ | — |  |  | $ | 299 |  |  | $ | 1,295 |
2016 |  | $ | 601 |  |  | $ | 423 |  |  | $ | 2,262 |  |  | $ | — |  |  | $ | (2,148 | ) |  | $ | 1,138 |
|  |  |  |  | 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, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2018 |  | $ | 13,629 |  |  | $ | — |  |  | $ | 4,825 |  |  | $ | — |  |  | $ | (518 | ) |  | $ | 17,936 |
2017 |  | $ | 12,527 |  |  | $ | — |  |  | $ | 1,603 |  |  | $ | — |  |  | $ | (501 | ) |  | $ | 13,629 |
2016 |  | $ | 6,127 |  |  | $ | 3,769 |  |  | $ | 2,719 |  |  | $ | — |  |  | $ | (88 | ) |  | $ | 12,527 |

X
- 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
Name: | srt_ScheduleOfValuationAndQualifyingAccountsDisclosureTextBlock
Namespace Prefix: | srt_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | srt_ValuationAndQualifyingAccountsAbstract
Namespace Prefix: | srt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration