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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 6 Months Ended
Jun. 30, 2013
Accounting Policies [Abstract]  
Financial Instruments Where Carrying Value and Fair Value Differ
Fair Value of Financial Instruments
            
The following details our financial instruments where the carrying value and the fair value differ (amounts in millions):
            
  Fair Value at Reporting Date Using
Financial Instrument As of June 30, 2013  Quoted Prices in Active Markets for Identical Items (Level 1)  Significant Other Observable Inputs (Level 2)  Significant Unobservable Inputs (Level 3)
Long-term obligations$74.8 $0 $75.1 $0
Weighted-Average Shares Outstanding

The following table sets forth, for the periods indicated, shares used in our computation of the weighted-average shares outstanding, which are used to calculate our basic and diluted net income attributable to Amedisys, Inc. common stockholders (amounts in thousands):

   For the Three-Month Periods Ended June 30, For the Six-Month Periods Ended June 30,
   2013 2012 2013 2012
 Weighted average number of shares outstanding - basic31,160 29,780 30,900 29,584
 Effect of dilutive securities:       
  Stock options12 23 17 16
  Non-vested stock and stock units317 223 381 303
 Weighted average number of shares outstanding - diluted31,489 30,026 31,298 29,903
 Anti-dilutive securities217 531 217 595