Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Consolidated Balance Sheets [Abstract]
Accumulated depreciation of furniture, fixtures and equipment	$ 1,621,115	$ 1,556,022
Accumulated amortization of intangible assets	$ 20,710,377	$ 19,437,856
Common stock, par value	$ 0.02	$ 0.02
Common stock, shares authorized	101,000,000	101,000,000
Common stock, shares issued	10,686,293	10,570,891
Common stock, shares outstanding	10,686,293	10,570,891