v2.4.0.8

Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Sep. 30, 2013 | Sep. 30, 2012 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Statement of Other Comprehensive Income [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | $ 73,445 | $ 62,188 | [1] | $ 54,048 | [1] | $ 63,998 | [1] | $ 80,991 | [1] | $ 56,145 | $ 49,231 | $ 46,706 | $ 58,182 | $ 233,759 | $ 199,037 | $ 261,225 | $ 210,264 | $ 169,071
Other comprehensive income (loss), net of tax: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation | 28,514 |  |  | 10,182 |  |  |  |  |  |  |  |  |  | 6,330 | 12,518 | 12,921 | (4,273) | 3,078
Net change in unrecognized gains (losses) on interest rate swaps, net of tax | 625 |  |  | (1,242) |  |  |  |  |  |  |  |  |  | 3,986 | (4,233) | (3,201) | (9,066) | 8,712
Reversal of unrealized gain on pension plan, net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | (15)
Total other comprehensive income (loss) | 29,139 |  |  | 8,940 |  |  |  |  |  |  |  |  |  | 10,316 | 8,285 | 9,720 | (13,339) | 11,775
Total comprehensive income | $ 102,584 |  |  | $ 62,988 |  |  |  |  |  |  |  |  |  | $ 244,075 | $ 207,322 | $ 270,945 | $ 196,925 | $ 180,846
[1] | Gross margin and operating income during the quarters ended March 31, 2012, June 30, 2012, September 30, 2012 and December 31, 2012 include gains of $8.3 million, $8.4 million, $0.5 million and $0.7 million, respectively, resulting from lawsuit settlements with certain of our aftermarket product suppliers as discussed in Note 8, "Commitments and Contingencies."

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- Definition The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=16317811 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 30 -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 AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A5 -Appendix A + Details
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