v2.4.0.8
Reconciliation Of EBITDA To Income From Continuing Operations (Details) (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
Segment Reporting [Abstract]                            
EBITDA $ 146,402   $ 109,344             $ 458,201 $ 386,809 $ 510,547 $ 418,068 $ 339,869
Depreciation and amortization 22,157   18,128             61,868 51,574 70,165 54,505 41,428
Interest expense, net 15,200   7,964             36,287 22,687 31,215 22,447 28,316
Loss on debt extinguishment 0   0             2,795 0 0 5,345 0
Provision for income taxes 35,600   29,204             123,492 113,511 147,942 125,507 103,007
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
Income from continuing operations                       $ 261,225 $ 210,264 $ 167,118
[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."