CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating activities
Net loss	$ (4,920,115)	$ (3,797,573)	$ (34,849,277)
Adjustments to reconcile net loss to net cash used in operating activities:
Realization of cumulative translation adjustment	(1,227,656)
Bad debt (recovery) expense		(40,524)	2,935,063
Change in fair value of derivative instruments	(591,039)	(7,144,983)	5,457,550
Depreciation and amortization expense	303,916	461,073	1,020,376
Impairment of assets held for sale			4,635,489
Gain on the disposal of assets held for sale		(781,760)
Gain of the disposal of property and equipment	(66,626)
Share-based compensation expense	1,894,099	2,565,961	2,513,159
Deferred income taxes	195,529
Non-cash interest expense	122,342		4,653,633
Changes in operating assets and liabilities:
Accounts receivable	1,991,801	20,748	1,279,875
Unbilled accounts receivable	(1,093,234)	987,408	5,408,216
Prepaid expenses and other current assets	367,149	1,481,150	(650,722)
Accounts payable	251,561	(1,682,461)	1,245,975
Accrued expenses and other liabilities	(418,076)	(391,904)	(8,513,914)
Deferred revenue	867,443	514,312
Net cash used in operating activities	(2,322,906)	(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 the sale of property and equipment	67,400
Proceeds from sales of short-term investments			3,130,588
Net cash provided by investing activities	67,400	1,687,521	2,756,007
Financing activities
Proceeds from issuance (repayment) of debt	2,500,000		(11,439)
Proceeds from revolving credit agreement	1,330,507
Deferred financing costs	(216,460)
Change in restricted cash requirements	100,000		(100,000)
Proceeds from issuance of common stock and warrants	38,984	5,855,689	21,601,075
Other	(32,960)	(74,361)	(29,184)
Net cash provided by financing activities	3,720,071	5,781,328	21,460,452
Effects of exchange rates on cash	181	(208,852)	(240,122)
Increases (decreases) in cash and cash equivalents	1,464,746	(548,556)	9,111,760
Cash and cash equivalents, at beginning of year	11,236,771	11,785,327	2,673,567
Cash and cash equivalents, at end of year	12,701,517	11,236,771	11,785,327
Supplemental disclosure of cash flow information
Cash paid for interest	220,219	54,573	1,234,142
Cash paid for income taxes		10,630
Noncash financing activity
Value of warrants issued to lender in connection with loan	69,876
Value of warrants issued in connection with issuance of common stock		$ 668,640	$ 2,070,146