v2.4.0.8
Condensed Consolidating Financial Information Condensed Consolidating Statements of Cash Flows (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net cash provided by operating activities $ 340,929 $ 182,072 $ 206,190 $ 211,772 $ 159,183
CASH FLOWS FROM INVESTING ACTIVITIES:          
Purchases of property and equipment (61,126) (60,636) (88,255) (86,416) (61,438)
Proceeds from sales of property and equipment 1,459 692 1,057 1,743 1,441
Proceeds from sale of businesses, net of cash sold     0 0 11,992
Investment in unconsolidated subsidiary (9,136) 0      
Investment in subsidiaries 0 0 0 0 0
Acquisitions, net of cash acquired (395,974) (133,123) (265,336) (486,934) (143,578)
Net cash used in investing activities (464,777) (193,067) (352,534) (571,607) (191,583)
CASH FLOWS FROM FINANCING ACTIVITIES:          
Proceeds from exercise of stock options 13,647 14,187 17,693 11,919 13,962
Excess tax benefit from stock-based payments 15,998 11,071 15,737 7,973 15,000
Debt issuance costs (16,912) (175) (253) (11,048) (419)
Proceeds from issuance of senior notes 600,000 0      
Borrowings under revolving credit facility 399,758 500,087 742,381 1,111,369 0
Repayments under revolving credit facility (745,313) (747,851) (855,402) (453,867) 0
Borrowings under term loans 35,000 200,000 200,000 250,000 0
Repayments under term loans (11,250) (14,375) (20,000) (600,464) (7,476)
Borrowings under receivables securitization facility 41,500 77,272 82,700 0 0
Repayments under receivables securitization facility (111,500) 0 (2,700) 0 0
Repayments of other long-term debt (19,518) (8,336)      
Payments of other obligations (32,091) (600) (23,084) (4,471) (2,105)
Investment and intercompany note activity with parent 0 0 0 0 0
Intercompany Dividend Paid 0 0 0 0 0
Net cash provided by financing activities 169,319 31,280 157,072 311,411 18,962
Effect of exchange rate changes on cash and equivalents 2,096 682 795 982 221
Net increase (decrease) in cash and equivalents 47,567 20,967 11,523 (47,442) (13,217)
Cash and equivalents, beginning of period 59,770 48,247 48,247 95,689 108,906
Cash and equivalents, end of period 107,337 69,214 59,770 48,247 95,689
Parent Company
         
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net cash provided by operating activities 101,136 134,934 150,309 72,199 53,403
CASH FLOWS FROM INVESTING ACTIVITIES:          
Purchases of property and equipment (1) (45) (150) (922) (705)
Proceeds from sales of property and equipment 0 0 0 2 16
Proceeds from sale of businesses, net of cash sold         0
Investment in unconsolidated subsidiary 0        
Investment in subsidiaries (418,205) (48,690) (132,006) (347,005) (77,421)
Acquisitions, net of cash acquired 0 0 0 0 0
Net cash used in investing activities (418,206) (48,735) (132,156) (347,925) (78,110)
CASH FLOWS FROM FINANCING ACTIVITIES:          
Proceeds from exercise of stock options 13,647 14,187 17,693 11,919 13,962
Excess tax benefit from stock-based payments 15,998 11,071 15,737 7,973 15,000
Debt issuance costs (16,830) 0 (30) (10,874) (419)
Proceeds from issuance of senior notes 600,000        
Borrowings under revolving credit facility 315,000 442,500 612,700 748,329  
Repayments under revolving credit facility (616,000) (733,500) (832,700) (227,329)  
Borrowings under term loans 35,000 200,000 200,000 250,000  
Repayments under term loans (11,250) (14,375) (20,000) (563,079) (7,037)
Borrowings under receivables securitization facility 0 0 0    
Repayments under receivables securitization facility 0   0    
Repayments of other long-term debt (925) (2,580)      
Payments of other obligations 0 0 (3,065) (1,640) (850)
Investment and intercompany note activity with parent 0 0 0 0 0
Intercompany Dividend Paid 0 0 0 0 0
Net cash provided by financing activities 334,640 (82,697) (9,665) 215,299 20,656
Effect of exchange rate changes on cash and equivalents 0 0 0 0 0
Net increase (decrease) in cash and equivalents 17,570 3,502 8,488 (60,427) (4,051)
Cash and equivalents, beginning of period 18,396 9,908 9,908 70,335 74,386
Cash and equivalents, end of period 35,966 13,410 18,396 9,908 70,335
Guarantor Subsidiaries
         
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net cash provided by operating activities 195,524 252,440 289,013 201,029 163,533
CASH FLOWS FROM INVESTING ACTIVITIES:          
Purchases of property and equipment (40,824) (47,446) (68,344) (79,474) (57,687)
Proceeds from sales of property and equipment 1,032 458 699 1,557 1,040
Proceeds from sale of businesses, net of cash sold         11,992
Investment in unconsolidated subsidiary 0        
Investment in subsidiaries (84,893) 0 0 (93,985) 0
Acquisitions, net of cash acquired (21,570) (110,713) (183,716) (193,292) (121,384)
Net cash used in investing activities (146,255) (157,701) (251,361) (365,194) (166,039)
CASH FLOWS FROM FINANCING ACTIVITIES:          
Proceeds from exercise of stock options 0 0 0 0 0
Excess tax benefit from stock-based payments 0 0 0 0 0
Debt issuance costs 0 0 0 0 0
Proceeds from issuance of senior notes 0        
Borrowings under revolving credit facility 0 0 0 0  
Repayments under revolving credit facility 0 0 0 0  
Borrowings under term loans 0 0 0 0  
Repayments under term loans 0 0 0 0 0
Borrowings under receivables securitization facility 0 0 0    
Repayments under receivables securitization facility 0   0    
Repayments of other long-term debt (7,983) (1,834)      
Payments of other obligations (473) (600) (6,861) (849) (399)
Investment and intercompany note activity with parent (25,095) (47,754) (129,076) (226,872) (56,459)
Intercompany Dividend Paid (71,943) (138,279) (159,047) (65,797) (55,638)
Net cash provided by financing activities (55,304) (92,959) (36,832) 160,226 422
Effect of exchange rate changes on cash and equivalents 0 0 0 0 0
Net increase (decrease) in cash and equivalents (6,035) 1,780 820 (3,939) (2,084)
Cash and equivalents, beginning of period 18,253 17,433 17,433 21,372 23,456
Cash and equivalents, end of period 12,218 19,213 18,253 17,433 21,372
Non-Guarantor Subsidiaries
         
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net cash provided by operating activities 116,212 (67,023) (74,085) 4,341 (2,115)
CASH FLOWS FROM INVESTING ACTIVITIES:          
Purchases of property and equipment (20,301) (13,145) (19,761) (6,020) (3,046)
Proceeds from sales of property and equipment 427 234 358 184 385
Proceeds from sale of businesses, net of cash sold         0
Investment in unconsolidated subsidiary (9,136)        
Investment in subsidiaries 0 0 0 0 0
Acquisitions, net of cash acquired (374,404) (22,410) (81,620) (293,642) (22,194)
Net cash used in investing activities (403,414) (35,321) (101,023) (299,478) (24,855)
CASH FLOWS FROM FINANCING ACTIVITIES:          
Proceeds from exercise of stock options 0 0 0 0 0
Excess tax benefit from stock-based payments 0 0 0 0 0
Debt issuance costs (82) (175) (223) (174) 0
Proceeds from issuance of senior notes 0        
Borrowings under revolving credit facility 84,758 57,587 129,681 363,040  
Repayments under revolving credit facility (129,313) (14,351) (22,702) (226,538)  
Borrowings under term loans 0 0 0 0  
Repayments under term loans 0 0 0 (37,385) (439)
Borrowings under receivables securitization facility 41,500 77,272 82,700    
Repayments under receivables securitization facility (111,500)   (2,700)    
Repayments of other long-term debt (10,610) (3,922)      
Payments of other obligations (31,618) 0 (13,158) (1,982) (856)
Investment and intercompany note activity with parent (478,003) (936) (2,930) (214,118) (20,962)
Intercompany Dividend Paid 0 0 0 0 0
Net cash provided by financing activities 321,138 117,347 176,528 311,079 19,667
Effect of exchange rate changes on cash and equivalents 2,096 682 795 982 221
Net increase (decrease) in cash and equivalents 36,032 15,685 2,215 16,924 (7,082)
Cash and equivalents, beginning of period 23,121 20,906 20,906 3,982 11,064
Cash and equivalents, end of period 59,153 36,591 23,121 20,906 3,982
Consolidation, Eliminations
         
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net cash provided by operating activities (71,943) (138,279) (159,047) (65,797) (55,638)
CASH FLOWS FROM INVESTING ACTIVITIES:          
Purchases of property and equipment 0 0 0 0 0
Proceeds from sales of property and equipment 0 0 0 0 0
Proceeds from sale of businesses, net of cash sold         0
Investment in unconsolidated subsidiary 0        
Investment in subsidiaries 503,098 48,690 132,006 440,990 77,421
Acquisitions, net of cash acquired 0 0 0 0 0
Net cash used in investing activities 503,098 48,690 132,006 440,990 77,421
CASH FLOWS FROM FINANCING ACTIVITIES:          
Proceeds from exercise of stock options 0 0 0 0 0
Excess tax benefit from stock-based payments 0 0 0 0 0
Debt issuance costs 0 0 0 0 0
Proceeds from issuance of senior notes 0        
Borrowings under revolving credit facility 0 0 0 0  
Repayments under revolving credit facility 0 0 0 0  
Borrowings under term loans 0 0 0 0  
Repayments under term loans 0 0 0 0 0
Borrowings under receivables securitization facility 0 0 0    
Repayments under receivables securitization facility 0   0    
Repayments of other long-term debt 0 0      
Payments of other obligations 0 0 0 0 0
Investment and intercompany note activity with parent 503,098 48,690 132,006 440,990 77,421
Intercompany Dividend Paid 71,943 138,279 159,047 65,797 55,638
Net cash provided by financing activities (431,155) 89,589 27,041 (375,193) (21,783)
Effect of exchange rate changes on cash and equivalents 0 0 0 0 0
Net increase (decrease) in cash and equivalents 0 0 0 0 0
Cash and equivalents, beginning of period 0 0 0 0 0
Cash and equivalents, end of period $ 0 $ 0 $ 0 $ 0 $ 0