CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Operating activities
Net loss	$ (3,797,573)	$ (34,849,277)
Adjustments to reconcile net loss to net cash used in operating activities:
Bad debt (recovery) expense	(40,524)	2,935,063
Change in market value of derivative instruments	(7,144,983)	5,457,550
Gain on the sale of assets held for sale	(781,760)
Depreciation and amortization	461,073	1,020,376
Impairment of assets held for sale		4,635,489
Share-based compensation expense	2,565,961	2,513,159
Non cash interest expense on debt		4,653,633
Changes in operating assets and liabilities:
Accounts receivable	208,048	1,830,221
Unbilled accounts receivable	987,408	4,606,418
Prepaid expenses and other current assets	1,293,850	(399,270)
Accounts payable	(1,682,461)	1,245,975
Accrued expenses and other liabilities	122,408	(8,513,914)
Net cash used in operating activities	(7,808,553)	(14,864,577)
Investing activities
Purchases of property and equipment	(71,439)	(374,581)
Proceeds from the disposal of assets held for sale	1,758,960
Proceeds from sales of short-term investments		3,130,588
Net cash provided by investing activities	1,687,521	2,756,007
Financing activities
Payments of debt obligations		(11,439)
Change in restricted cash requirements		(100,000)
Net proceeds from issuance of common stock and warrants	5,781,328	21,571,891
Net cash provided by financing activities	5,781,328	21,460,452
Effects of exchange rates on cash	(208,852)	(240,122)
(Decrease) increase in cash and cash equivalents	(548,556)	9,111,760
Cash and cash equivalents, at beginning of year	11,785,327	2,673,567
Cash and cash equivalents, at end of year	11,236,771	11,785,327
Supplemental disclosure of cash flow information
Cash paid for interest	54,573	1,234,142
Cash paid for income taxes	$ 10,630