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15. Quarterly Financial Data | 12 Months Ended
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Dec. 31, 2012
Quarterly Financial Data [Abstract] |
Quarterly Financial Data [Text Block] | 15. QUARTERLY FINANCIAL DATA (UNAUDITED) Summarized quarterly financial data for 2012 and 2011 are as follows (in millions, except per share data):
|  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
2012 |  |  |  |  |  |  |  |
Net sales |  | $ | 486.3 |  |  | $ | 510.4 |  |  | $ | 498.7 |  |  | $ | 573.8 |
Gross profit |  | 278.6 |  |  | 287.9 |  |  | 273.5 |  |  | 314.1 |
Net income attributable to Bio-Rad |  | 31.0 |  |  | 48.3 |  |  | 42.4 |  |  | 42.0 |
Basic earnings per share |  | $ | 1.10 |  |  | $ | 1.71 |  |  | $ | 1.50 |  |  | $ | 1.48 |
Diluted earnings per share |  | $ | 1.09 |  |  | $ | 1.69 |  |  | $ | 1.48 |  |  | $ | 1.46 |
2011 |  |  |  |  |  |  |  |
Net sales |  | $ | 485.1 |  |  | $ | 521.7 |  |  | $ | 516.5 |  |  | $ | 550.2 |
Gross profit |  | 277.6 |  |  | 293.1 |  |  | 296.2 |  |  | 311.0 |
Net income attributable to Bio-Rad |  | 33.0 |  |  | 40.0 |  |  | 45.9 |  |  | 59.2 |
Basic earnings per share |  | $ | 1.18 |  |  | $ | 1.43 |  |  | $ | 1.63 |  |  | $ | 2.11 |
Diluted earnings per share |  | $ | 1.16 |  |  | $ | 1.41 |  |  | $ | 1.61 |  |  | $ | 2.08 |
During the first quarter of 2012, we identified an error in the consolidated financial statements for the years 2007 through 2011, related to a foreign supplemental tax associated with social benefits. We incorrectly interpreted and applied the local statutes to our circumstances. We accrued $6.1 million for these foreign supplemental taxes, including penalties and interest, during the first quarter of 2012, all of which has been paid. The foreign supplemental tax, and the related penalties and interest, were not deductible for income tax purposes, and as such this error did not have an impact on Bio-Rad's provision for income taxes. We evaluated the materiality of the error from a qualitative and quantitative perspective. Based on such evaluation, we concluded that while the accumulation of the error was significant to the three-month period ended March 31, 2012, the correction was not material to any individual prior period or for the year ended December 31, 2012, nor did it have an effect on the trend of financial results, taking into account the requirements of the Securities and Exchange Commission (SEC) Staff Accounting Bulletin No. 108, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements (SAB 108).

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- Definition The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=20225539&loc=d3e1280-108306 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section G -Subsection 1 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 28 -Paragraph 30 -Subparagraph a-j -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 28 -Paragraph 23, 24 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 302 -Paragraph a + Details
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