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QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) (Tables)
 12 Months Ended
Dec. 31, 2012
QUARTERLY RESULTS OF OPERATIONS (UNAUDITED) [Abstract]  
Quarterly Financial Information
(14) 
QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

The following summarizes certain quarterly results of operations:
 
   
Revenue
  
Contribution
From Dental
Offices
  
Net Income
  
Net Income
Per Share of
Common
Stock -
Diluted
 
2010 quarter ended:
            
March 31, 2010
 $16,446,881  $2,360,799  $534,356  $0.28 
June 30, 2010
  15,746,655   1,872,020   216,796   0.11 
September 30, 2010
  16,049,646   2,089,852   485,523   0.26 
December 31, 2010
  15,749,451   1,256,939   206,544   0.10 
                  
   $63,992,633  $7,579,610  $1,443,219  $0.75 
                  
2011 quarter ended:
                
March 31, 2011
 $17,075,202  $1,696,340  $386,124  $0.20 
June 30, 2011
  16,416,545   1,710,741   365,425   0.19 
September 30, 2011
  15,492,724   1,249,208   374,045   0.20 
December 31, 2011
  14,136,136   941,721   489,733   0.26 
                  
   $63,120,607  $5,598,010  $1,615,327  $0.85 
                  
2012 quarter ended:
                
March 31, 2012
 $16,199,687  $1,731,481  $308,794  $0.17 
June 30, 2012
  15,775,428   1,320,487   142,166   0.08 
September 30, 2012
  15,709,423   1,715,755   383,147   0.21 
December 31, 2012
  14,669,651   1,015,128   (26,843)  (0.01)
                  
   $62,354,189  $5,782,851  $807,264  $0.44