Financial Information for Subsidiary Guarantors and Non-Guarantor Subsidiaries under Select's 6.375% Senior Notes (Details 3) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Consolidating Statement of Operations    
Net operating revenues $ 795,343 $ 762,578
Costs and expenses:    
Cost of services 664,385 638,764
General and administrative 21,675 18,123
Bad debt expense 12,670 11,018
Depreciation and amortization 17,348 16,229
Total costs and expenses 716,078 684,134
Income (loss) from operations 79,265 78,444
Other income and expense:    
Equity in earnings of unconsolidated subsidiaries 2,592 908
Loss on early retirement of debt   (2,277)
Interest expense (21,388) (20,616)
Income before income taxes 60,469 56,459
Income tax expense 23,184 22,092
Net income 37,285 34,367
Less: Net income attributable to non-controlling interests 2,222 1,323
Net income attributable to Select Medical Holdings Corporation and Select Medical Corporation 35,063 33,044
Select    
Consolidating Statement of Operations    
Net operating revenues 795,343 762,578
Costs and expenses:    
Cost of services 664,385 638,764
General and administrative 21,675 18,123
Bad debt expense 12,670 11,018
Depreciation and amortization 17,348 16,229
Total costs and expenses 716,078 684,134
Income (loss) from operations 79,265 78,444
Other income and expense:    
Equity in earnings of unconsolidated subsidiaries 2,592 908
Loss on early retirement of debt   (2,277)
Interest expense (21,388) (20,616)
Income before income taxes 60,469 56,459
Income tax expense 23,184 22,092
Net income 37,285 34,367
Less: Net income attributable to non-controlling interests 2,222 1,323
Net income attributable to Select Medical Holdings Corporation and Select Medical Corporation 35,063 33,044
Select | Reportable legal entities | Select Medical Corporation (Parent Company Only)    
Consolidating Statement of Operations    
Net operating revenues 119 103
Costs and expenses:    
Cost of services 436 445
General and administrative 21,751 19,312
Depreciation and amortization 985 923
Total costs and expenses 23,172 20,680
Income (loss) from operations (23,053) (20,577)
Other income and expense:    
Intercompany interest and royalty fees (286) (282)
Intercompany management fees 41,454 38,868
Loss on early retirement of debt   (2,277)
Interest expense (13,901) (13,796)
Income before income taxes 4,214 1,936
Income tax expense 1,402 925
Equity in earnings of subsidiaries 32,251 32,033
Net income 35,063 33,044
Net income attributable to Select Medical Holdings Corporation and Select Medical Corporation 35,063 33,044
Select | Reportable legal entities | Subsidiary Guarantors    
Consolidating Statement of Operations    
Net operating revenues 673,749 660,317
Costs and expenses:    
Cost of services 561,093 550,224
General and administrative (76) (1,189)
Bad debt expense 9,473 9,317
Depreciation and amortization 13,772 13,048
Total costs and expenses 584,262 571,400
Income (loss) from operations 89,487 88,917
Other income and expense:    
Intercompany interest and royalty fees 280 285
Intercompany management fees (35,247) (33,941)
Equity in earnings of unconsolidated subsidiaries 2,571 887
Interest expense (6,003) (5,832)
Income before income taxes 51,088 50,316
Income tax expense 22,046 20,962
Equity in earnings of subsidiaries 3,280 2,337
Net income 32,322 31,691
Less: Net income attributable to non-controlling interests   53
Net income attributable to Select Medical Holdings Corporation and Select Medical Corporation 32,322 31,638
Select | Reportable legal entities | Non-Guarantor Subsidiaries    
Consolidating Statement of Operations    
Net operating revenues 121,475 102,158
Costs and expenses:    
Cost of services 102,856 88,095
Bad debt expense 3,197 1,701
Depreciation and amortization 2,591 2,258
Total costs and expenses 108,644 92,054
Income (loss) from operations 12,831 10,104
Other income and expense:    
Intercompany interest and royalty fees 6 (3)
Intercompany management fees (6,207) (4,927)
Equity in earnings of unconsolidated subsidiaries 21 21
Interest expense (1,484) (988)
Income before income taxes 5,167 4,207
Income tax expense (264) 205
Net income 5,431 4,002
Less: Net income attributable to non-controlling interests 2,222 1,270
Net income attributable to Select Medical Holdings Corporation and Select Medical Corporation 3,209 2,732
Select | Eliminations    
Other income and expense:    
Equity in earnings of subsidiaries (35,531) (34,370)
Net income (35,531) (34,370)
Net income attributable to Select Medical Holdings Corporation and Select Medical Corporation $ (35,531) $ (34,370)