Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 7,933,470	$ 9,591,487
Investments	46,665,470	48,588,135
Short-term investment - restricted	13,877	13,877
Accounts receivable	1,839,319	1,477,188
Prepaid expenses and other current assets	655,765	495,260
Total current assets	57,107,901	60,165,947
Property and equipment, net	407,361	445,655
Long-term investments	1,481,682	10,726,685
Long-term investment - restricted	152,610	166,487
Goodwill	8,982,000	8,982,000
Other assets	77,558	104,034
Total assets	68,209,112	80,590,808
Current Liabilities:
Accounts payable	2,371,237	2,036,864
Accrued liabilities	1,941,894	1,911,479
Current portion of long-term debt, net	5,521,523	2,610,174
Total current liabilities	9,834,654	6,558,517
Long-term debt, net	23,540,461	27,945,186
Warrants	0	716,786
Other long-term liabilities	187,420	196,734
Total liabilities	33,562,535	35,417,223
Commitments (Note 9)
Stockholders' Equity:
Common stock, $0.01 par value - 225,000,000 shares authorized; 87,227,703 shares issued and 86,004,857 shares outstanding at September 30, 2014; and 87,081,862 shares issued and 85,859,016 shares outstanding at December 31, 2013	872,277	870,819
Additional paid-in capital	809,161,290	806,660,340
Treasury stock (at cost, 1,222,846 shares)	(1,524,029)	(1,524,029)
Accumulated deficit	(773,866,425)	(760,826,561)
Accumulated other comprehensive gain/(loss)	3,464	(6,984)
Total stockholders' equity	34,646,577	45,173,585
Total liabilities and stockholders' equity	$ 68,209,112	$ 80,590,808