CONDENSED CONSOLIDATED STATEMENT OF INCOME (UNAUDITED) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
CONDENSED CONSOLIDATED STATEMENTS OF INCOME [Abstract]        
REVENUE: $ 15,709,423 $ 15,492,724 $ 47,684,538 $ 48,984,473
DIRECT EXPENSES:        
Clinical salaries and benefits 8,823,264 8,767,612 26,912,387 27,716,934
Dental supplies 689,283 658,705 2,078,765 2,157,987
Laboratory fees 751,534 679,304 2,303,063 2,188,635
Occupancy 1,401,550 1,381,849 4,137,110 4,060,977
Advertising and marketing 353,004 758,776 1,730,667 1,944,036
Depreciation and amortization 725,719 633,200 2,060,675 1,860,980
General and administrative 1,249,314 1,364,070 3,694,149 4,398,635
Total Direct Expenses 13,993,668 14,243,516 42,916,816 44,328,184
Contribution from dental offices 1,715,755 1,249,208 4,767,722 4,656,289
CORPORATE EXPENSES:        
General and administrative 1,018,319 [1] 580,564 [1] 3,205,073 [2] 2,658,299 [2]
Depreciation and amortization 41,308 35,575 118,467 86,578
OPERATING INCOME 656,128 633,069 1,444,182 1,911,412
Interest expense, net 28,018 19,883 76,796 66,178
INCOME BEFORE INCOME TAXES 628,110 613,186 1,367,386 1,845,234
Income tax expense 244,963 239,141 533,281 719,641
NET INCOME $ 383,147 $ 374,045 $ 834,105 $ 1,125,593
Net income per share of Common Stock - Basic (in dollar per share) $ 0.21 $ 0.20 $ 0.45 $ 0.61
Net income per share of Common Stock - Diluted (in dollar per share) $ 0.21 $ 0.20 $ 0.45 $ 0.59
Cash dividends per share of Common Stock (in dollar per share) $ 0.22 $ 0.22 $ 0.66 $ 0.64
Weighted average number of shares of Common Stock and dilutive securities:        
Basic (in shares) 1,841,817 1,859,362 1,839,788 1,855,984
Diluted (in shares) 1,851,445 1,914,075 1,849,842 1,917,594
[1] Corporate expense - general and administrative includes $104,759 of stock-based compensation expense pursuant to ASC Topic 718 and ($162,828) related to a long-term incentive program for the quarter ended September 30, 2011 and $127,621 of stock-based compensation expense pursuant to ASC Topic 718 for the quarter ended September 30, 2012.
[2] Corporate expense - general and administrative includes $238,415 of stock-based compensation expense pursuant to ASC Topic 718 for the nine months ended September 30, 2011 and $472,585 of stock-based compensation expense pursuant to ASC Topic 718 for the nine months ended September 30, 2012.