Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 26,635	$ 12,810
Marketable securities	1,682	4,838
Trade and other receivables, net	853	1,254
Inventories, net	26,576	22,808
Prepaid expenses and other assets	1,274	1,462
Total current assets	57,020	43,172
Inventories, net	1,149	1,149
Operating lease right of use asset	780	922
Investments accounted for at fair value	658	654
Property, plant and equipment, net	24,742	26,203
Mineral properties, net	83,539	83,539
Restricted cash	20,237	20,081
Total assets	188,125	175,720
Current liabilities
Accounts payable and accrued liabilities	3,045	5,438
Current portion of operating lease liability	273	288
Current portion of asset retirement obligation	46	46
Current portion of loans and borrowings	15,613	16,866
Total current liabilities	18,977	22,638
Warrant liabilities	2,751	2,791
Operating lease liability	618	758
Asset retirement obligation	19,882	18,926
Total liabilities	42,228	45,113
Equity
Share capital Common shares, without par value, unlimited shares authorized; shares issued and outstanding 120,534,705 at June 30, 2020 and 100,735,889 at December 31, 2019	523,196	493,958
Accumulated deficit	(383,880)	(370,036)
Accumulated other comprehensive income	2,762	2,989
Total shareholders' equity	142,078	126,911
Non-controlling interests	3,819	3,696
Total equity	145,897	130,607
Total liabilities and equity	188,125	175,720
Commitments and contingencies (Note 14)