CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 15,943,399	$ 12,701,517
Billed accounts receivable		2,432,641
Unbilled accounts receivable	1,613,325	4,114,442
Prepaid expenses and other current assets	209,514	547,245
Total current assets	17,766,238	19,795,845
Property and equipment, net	429,506	483,976
Other long-term assets and deferred costs	74,594	113,130
Goodwill	2,348,453	2,348,453
Total assets	20,618,791	22,741,404
Current liabilities:
Accounts payable	1,159,179	1,697,280
Accrued expenses and other liabilities	2,590,605	2,328,877
Deferred revenue	471,816	1,381,755
Current portion of long-term debt	999,996	749,997
Current portion of derivative instruments	191,643
Short-term debt		1,330,507
Total current liabilities	5,413,239	7,488,416
Other long-term liabilities	592,028	579,427
Long-term debt, less current portion	974,413	1,704,108
Derivative instruments, less current portion	2,285,545	1,295,613
Total liabilities	9,265,225	11,067,564
Stockholders' equity:
Common stock, $0.0001 par value; 100,000,000 shares authorized; 52,297,580 and 48,352,651shares issued and outstanding at September 30, 2013 and December 31, 2012, respectively	5,230	4,835
Additional paid-in-capital	217,471,662	210,495,905
Accumulated other comprehensive loss	(220,110)	(217,328)
Accumulated deficit	(205,903,216)	(198,609,572)
Total stockholders' equity	11,353,566	11,673,840
Total liabilities and stockholders' equity	$ 20,618,791	$ 22,741,404