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COMMITMENTS AND CONTINGENCIES (Details) (USD $)
3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2011
Dental Practice Acquisition [Member]
Dec. 31, 2009
Dental Practice Acquisition [Member]
Nov. 02, 2011
Dental Practice Acquisition [Member]
COMMITMENTS AND CONTINGENCIES [Abstract]              
Minimum term of operating lease   1 year          
Maximum term of operating lease   5 years          
Rent expense   $ 4,452,030 $ 4,303,217 $ 4,314,063      
Future Minimum Payments Due, Fiscal Year Maturity [Abstract]              
2014   3,831,793          
2015   3,174,405          
2016   2,396,369          
2017   1,623,904          
2018   904,103          
Thereafter   996,015          
Total   12,926,589          
Business Acquisition [Line Items]              
Number of years until the contingent liability becomes payable   4 years       4 years  
Number of trailing months of operating cash flow used to determine contingent liability   12 months       12 months  
Fair value of contingent liabilities 401,000 421,000         280,000
Fair value adjustment of contingent liabilities 196,000 196,000 0 830,000 550,000    
Nonoperating expense         5,000    
Nonoperating income         $ 280,000