Long-Term Debt And Credit Facilities (Schedule Of Long-Term Debt Outstanding) (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Total debt, Carrying Amount	$ 32,493,374	$ 29,089,226
Total debt, Estimated Fair Value	32,503,064	29,113,293
Less current maturities, Carrying Amount	(12,317,760)	(12,264,490)
Less current maturities, Estimated Fair Value	(12,327,450)	(12,288,557)
Total long term debt, Carrying Amount	20,175,614	16,824,736
Total long term debt, Estimated Fair Value	20,175,614	16,824,736
Revolving Credit Agreement, Due June 2013 [Member]
Debt Instrument [Line Items]
Total debt, Carrying Amount	8,793,977	7,253,017
Total debt, Estimated Fair Value	8,803,667	7,277,084
Term Note, Due December 2013 [Member]
Debt Instrument [Line Items]
Total debt, Carrying Amount	3,000,000	4,000,000
Total debt, Estimated Fair Value	3,000,000	4,000,000
Healthcare Royalty Partners debt [Member]
Debt Instrument [Line Items]
Total debt, Carrying Amount	18,639,333	16,248,075
Total debt, Estimated Fair Value	18,639,333	16,248,075
Subordinated Convertible Debentures [Member]
Debt Instrument [Line Items]
Total debt, Carrying Amount	2,060,064	1,588,134
Total debt, Estimated Fair Value	$ 2,060,064	$ 1,588,134