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QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)
12 Months Ended
Dec. 31, 2013
QUARTERLY FINANCIAL DATA (UNAUDITED) [Abstract]  
Quarterly financial data
The results of any single quarter are not necessarily indicative of the Company’s results for the full year. Earnings per share data is computed independently for each of the periods presented. As a result, the sum of the earnings per share amounts for the quarter may not equal the total for the year.

   
Quarter ended
 
2013
March 31,
June 30,
September 30,
December 31,
Revenue
19,927,433
21,110,452
20,664,645
21,285,992
Gross Profit
4,440,570
4,236,247
4,476,127
5,280,303
Net Income
1,671,276
1,784,276
1,911,100
2,370,242
Earning per share
       
Basic
0.20
0.21
0.23
0.28
Diluted
0.20
0.21
0.23
0.28
         
2012
       
Revenue
19,721,095
20,854,627
21,340,831
27,356,029
Gross Profit
4,964,386
5,768,644
5,804,424
7,695,159
Net Income
1,919,320
2,696,019
2,795,437
3,600,354
Earning per share
       
Basic
0.28
0.37
0.33
0.43
Diluted
0.27
0.36
0.33
0.43