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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Cash flows from operating activities:    
Net loss $ (5,015) $ (12,443)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation expense 2,351 472
Depreciation and amortization 40 10
Debt discounts and deferred financing fees and the valuation of conversion features and warrants    9,568
Changes in operating assets and liabilities:    
Accounts receivable 1,623 (2,961)
Other assets      
Prepaid expenses (96) (70)
Accounts payable and accrued expenses 87 (160)
Deferred revenue (363) 2,535
Net cash used in operating activities (1,373) (3,048)
Cash flows from investing activities:    
Purchase of property and equipment (268) (25)
Net cash used in investing activities (268) (25)
Cash flows from financing activities:    
Proceeds from issuance of convertible debt    4,228
Repayment of convertible debt    (25)
Proceeds from exercise of warrants 8 515
Net cash provided by financing activities 8 4,718
Effect of exchange rate changes on cash (32) 3
Net (decrease) increase in cash (1,665) 1,648
Cash at beginning of period 12,940 911
Cash at end of period 11,275 2,559
Supplemental disclosure of cash flow information:    
Interest paid    90
Income taxes paid 42 4
Supplemental disclosure of non-cash transactions:    
Fair value of shares of common stock and warrants issued to brokers in connection with financing, recorded as debt issuance costs    1
Debt discount recorded as part of convertible debt financing transactions including, warrants issued    4,228
Debt issuance costs related to 2011 financing    35
Accrued expenses converted to common stock    120
Conversion of debt and accrued interest to common stock    2,860
Reduction of derivative liabilities upon conversion of debt    $ 13,379