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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Operating activities:    
Net loss $ (1,555) $ (3,041)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation 9 42
Stock-based compensation 69 221
Changes in operating assets and liabilities:    
Prepaid expenses and other assets (1,137) (182)
Accounts payable and other current liabilities (1,196) (187)
Net cash used in operating activities (3,810) (3,147)
Investing activities:    
Purchase of property, plant and equipment (2)  
Net cash used in investing activities (2)  
Financing activities:    
Proceeds from issuance of common stock, net of issuance costs 86  
Payment of preferred stock dividend (50) (50)
Net cash used in financing activities 36 (50)
Effect of exchange rate changes on cash and cash equivalents (15) (128)
Net increase / (decrease) in cash and cash equivalents (3,791) (3,325)
Cash and cash equivalents, beginning of period 16,520 20,440
Cash and cash equivalents, end of period 12,729 17,115
Cash received during the period for:    
Interest 12 10
Taxes 8  
Non cash financing activities:    
Accrual of preferred stock dividends $ 50 $ 50