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Condensed Consolidated Statements Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Cash flows from operating activities:    
Net loss for the period $ (4,059) $ (48,421)
Adjustments to reconcile net loss for the period to net cash used in operations:    
Depreciation and amortization 441 542
Stock-based compensation 748 744
Loss/(gain) on disposal of marketable securities (22) 18
Unrealized loss on other investments (1,422) 47,322
Deferred tax benefit   (15,374)
Other non-cash items (162) (264)
Change in working capital account items:    
Other current assets 532 1,142
Accounts payable, accrued liabilities and other (268) (2,204)
Net cash used in operating activities (4,212) (16,495)
Cash flows from investing activities:    
Proceeds from sale of marketable securities 55 112
Proceeds from sale of other investments, net 10,560  
Additions to plant and equipment (3) (2,206)
Change in restricted cash   (30)
Proceeds from option agreement 180  
Net cash (used in)/provided by investing activities 10,792 (2,124)
Cash flows from financing activities:    
Proceeds from Issuance of Debt   9,637
Repayment of debt (6,344)  
Net cash provided by financing activities (6,344) 9,637
Net increase/(decrease) in cash and cash equivalents 236 (8,982)
Cash and cash equivalents, beginning of period 5,475 18,281
Cash and cash equivalents, end of period $ 5,711 $ 9,299