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Significant Accounting Policies (Details) (USD $)
 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2012
Nonvested Stock Option [Member]
Oct. 31, 2012
Maximum [Member]
Dec. 31, 2012
Maximum [Member]
Jan. 31, 2012
Minimum [Member]
Dec. 31, 2012
Furniture & equipment [Member]
Maximum [Member]
Dec. 31, 2012
Furniture & equipment [Member]
Minimum [Member]
Dec. 31, 2012
Software [Member]
Maximum [Member]
Dec. 31, 2012
Software [Member]
Minimum [Member]
Dec. 31, 2012
Leasehold improvements [Member]
Maximum [Member]
Dec. 31, 2012
Leasehold improvements [Member]
Minimum [Member]
Basis of Presentation and Significant Accounting Policies (Textual) [Abstract]                            
Estimated useful lives                 8 years 3 years 7 years 3 years 5 years 3 years
Combined physical therapy/speech language pathology expenses           $ 3,700                
Annual limit on physical therapy and speech language pathology services             1,900 1,880            
Annual limit occupational therapy services             1,900 1,880            
Nonvested stock options 75,840 348,810 723,890 874,192 0                  
Basis of Presentation and Significant Accounting Policies (Additional Textual) [Abstract]                            
Percentage of general partnership interest owned 1.00%                          
Percentage of limited partnership interest owned 64.00%                          
Percentage of reduction prevented 26.50%                          
Medicare spending cut percentage 2.00%                          
Expected increase on outpatient physician therapy service payments derived from PPIS 2.00%                          
Percentage of practice expense component 100.00%                          
Percentage reduction for service 20.00%                          
Percentage reduction for service in institutional settings 25.00%                          
Difference between net revenues and corresponding cash collections, approximately of net revenues 1.00%                          
Maximum difference between actual aggregate contractual reserve and estimated contractual allowance reserve 1.00%                          
Maximum percentage of change not likely be more in contractual allowance reserve estimate 1.00%                          
Minimum percentage of fair value reporting unit less than carrying amount 50.00%                          
Unrecognized tax benefit 0 0                        
Interest expense recognized 0 0                        
Stock option compensation 0 0                        
Number of Shares, Granted 0 0 0                      
Shares granted to employees lapse in equal installments on the following four or five annual anniversaries of the date of grant Shares granted to employees lapse in equal installments on the following four or five annual anniversaries of the date of grant.                          
Federal debt ceiling in connection with deficit reductions 10 years                          
Reductions in federal spending $ 1,200,000,000,000                          
Percentage of increases the payment reduction 50.00%