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Unaudited Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2013
Unaudited Quarterly Financial Data [Abstract] |
Schedule of Quarterly Financial Information | The following is a summary of quarterly results of operations:
|  |  |  |  |  |  | Quarter ended
2013 |  | December 31 |  | September 30 |  | June 30 |  | March 31
Net sales | $ | 235,824 | $ | 233,511 | $ | 242,785 | $ | 235,710
Gross profit |  | 53,553 |  | 53,519 |  | 60,220 |  | 58,729
Operating income |  | 6,882 |  | 10,705 |  | 11,825 |  | 10,292
Provision for income taxes |  | 1,066 |  | 1,016 |  | 1,125 |  | 1,019
Net income |  | 321 |  | 5,513 |  | 6,391 |  | 4,283
Net income attributable to noncontrolling interests |  | 117 |  | 466 |  | 634 |  | 160
Net income attributable to Stoneridge, Inc. |  | 204 |  | 5,047 |  | 5,757 |  | 4,123
Earnings per share attributable to Stoneridge, Inc.: |  |  |  |  |  |  |  |
Basic (A) |  | 0.01 |  | 0.19 |  | 0.22 |  | 0.15
Diluted (A) |  | 0.01 |  | 0.19 |  | 0.21 |  | 0.15
|  |  |  |  |  |  | Quarter ended
2012 |  | December 31 |  | September 30 |  | June 30 |  | March 31
Net sales | $ | 222,725 | $ | 219,256 | $ | 234,265 | $ | 262,267
Gross profit |  | 54,609 |  | 51,238 |  | 53,659 |  | 65,138
Operating income |  | 8,648 |  | 6,615 |  | 1,617 |  | 11,849
Provision (benefit) for income taxes |  | 95 |  | 383 |  | (884) |  | 1,218
Net income (loss) |  | 2,711 |  | 589 |  | (5,298) |  | 5,746
Net income (loss) attributable to noncontrolling interests |  | 90 |  | 170 |  | (1,740) |  | (133)
Net income (loss) attributable to Stoneridge, Inc. |  | 2,621 |  | 419 |  | (3,558) |  | 5,879
Earnings per share attributable to Stoneridge, Inc.: |  |  |  |  |  |  |  |
Basic (A) |  | 0.10 |  | 0.02 |  | (0.13) |  | 0.22
Diluted (A) |  | 0.10 |  | 0.02 |  | (0.13) |  | 0.22
| (A) |  | Earnings per share for the year may not equal the sum of the four historical quarters earnings per share due to changes in weighted-average basic and diluted shares outstanding.

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- Definition Tabular disclosure of the quarterly financial data in the annual financial statements. The disclosure includes financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income (loss) before extraordinary items and cumulative effect of a change in accounting principle and earnings per share data. + 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=25249566&loc=d3e1280-108306 + Details
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