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Schedule II - Valuation and Qualifying Accoutns | 12 Months Ended
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Dec. 31, 2019
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items] |
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | BIO-RAD LABORATORIES, INC. SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS Years Ended December 31, 2019, 2018, and 2017 (in thousands) Allowance for doubtful accounts receivable
|  | Balance at Beginning of Year |  | (Credited) Charged to Costs and Expenses |  | Deductions |  | Balance at End of Year
2019 |  | $ | 26,713 |  |  | $ | (1,240 | ) |  | $ | (5,268 | ) |  | $ | 20,205 |
2018 |  | $ | 25,549 |  |  | $ | 11,527 |  |  | $ | (10,363 | ) |  | $ | 26,713 |
2017 |  | $ | 23,367 |  |  | $ | 11,174 |  |  | $ | (8,992 | ) |  | $ | 25,549 |
Valuation allowance for long-term deferred tax assets
|  | Balance at Beginning of Year |  | Charged (Credited) to Income Tax Expense |  | Deductions |  | Balance at End of Year
2019 |  | $ | 70,769 |  |  | $ | — |  |  | $ | (3,579 | ) |  | $ | 67,190 |
2018 |  | $ | 66,356 |  |  | $ | 4,413 |  |  | $ | — |  |  | $ | 70,769 |
2017 |  | $ | 66,403 |  |  | $ | (47 | ) |  | $ | — |  |  | $ | 66,356 |

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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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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