Long-Term Debt And Credit Facilities (Schedule Of Long-Term Debt Outstanding) (Details) (USD $)			6 Months Ended		3 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Revolving Credit Agreement Due August 2013 [Member]	Dec. 31, 2012 Revolving Credit Agreement Due August 2013 [Member]	Jun. 30, 2013 Term Note, Due December 2013 [Member]	Dec. 31, 2012 Term Note, Due December 2013 [Member]	Jun. 30, 2013 Healthcare Royalty Partners debt [Member]	Dec. 31, 2012 Healthcare Royalty Partners debt [Member]	Jun. 30, 2013 Subordinated Convertible Debentures [Member]	Dec. 31, 2012 Subordinated Convertible Debentures [Member]
Debt Instrument [Line Items]
Total debt, Carrying Amount	$ 29,870,480	$ 29,089,226	$ 6,542,094	$ 7,253,017	$ 2,000,000	$ 4,000,000	$ 18,589,302	$ 16,248,075	$ 2,739,084	$ 1,588,134
Total debt, Estimated Fair Value	29,877,847	29,113,293	6,549,461	7,277,084	2,000,000	4,000,000	18,589,302	16,248,075	2,739,084	1,588,134
Less current maturities, Carrying Amount	(12,061,454)	(12,264,490)
Less current maturities, Estimated Fair Value	(12,068,821)	(12,288,557)
Total long term debt, Carrying Amount	17,809,026	16,824,736
Total long term debt, Estimated Fair Value	$ 17,809,026	$ 16,824,736
Revolving credit agreement, maturity date			Aug. 01, 2013
Term note, maturity date					December 2013