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Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Current assets    
Cash and cash equivalents $ 15,310 $ 14,640
Marketable securities 17,454 27,061
Trade and other receivables 864 1,191
Inventories, net 19,138 16,550
Prepaid expenses and other assets 1,257 1,411
Total current assets 54,023 60,853
Inventories, net 1,772 1,772
Operating lease right of use asset 1,142 0
Notes receivable and other 1,166 1,107
Plant and equipment, net 29,017 29,843
Mineral properties, net 83,539 83,539
Restricted cash 19,682 19,652
Total assets 190,341 196,766
Current liabilities    
Accounts payable and accrued liabilities 6,222 7,921
Current portion of operating lease liability 275 0
Current portion of warrant liabilities 0 662
Current portion of asset retirement obligation 270 270
Deferred revenue 2,223 2,724
Total current liabilities 6,767 8,853
Warrant liabilities 7,142 5,621
Operating Lease, Liability, Noncurrent 954 0
Asset retirement obligation 19,347 18,834
Loans and borrowings 17,640 15,880
Total liabilities 54,073 51,912
Equity    
Share capital Common shares, without par value, unlimited shares authorized; shares issued and outstanding 71,962,817 at September 30, 2017 and 66,205,153 at December 31, 2016 472,987 469,303
Accumulated deficit (344,185) (332,058)
Accumulated other comprehensive income 3,707 3,843
Total shareholders' equity 132,509 141,088
Non-controlling interests 3,759 3,766
Total equity 136,268 144,854
Total liabilities and equity 190,341 196,766
Commitments and contingencies (Note 12)