Condensed Consolidated Interim Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Operating Activities
Net loss for the period	$ (2,252)	$ (9,063)
Adjustment to reconcile net loss to cash used in operating activities:
Depreciation and depletion	2,566	2,976
Amortization of debt discount and interest accrual	1,473	555
Accretion expense	52	42
Change in fair value of derivative liabilities (Note 8)	150	(138)
Stock based compensation	27	45
Unrealized foreign exchange gain	(3)	(43)
Changes in non-cash working capital items:
Prepaid expenses & other current assets	(64)	14
Inventory	(5,388)	(900)
Accounts payable & accrued liabilities	1,595	(1,595)
Interest payable	837	713
Cash used in operating activities	(1,007)	(7,394)
Investment activities:
Additions to property, plant, equipment and mineral interests	(2,031)	(2,071)
Cash used in investing activities	(2,031)	(2,071)
Financing activity:
Issuance of common shares (Note 10)	0	24,368
Proceeds from credit facility	5,000	0
Repayment of credit facility	0	(3,000)
Repayments of loan payable (Note 7)	(2,009)	(1,898)
Repayments of note payable and accrued interest (Note 13(ii))	0	(4,712)
Capital contribution from non-controlling interest	0	10,000
Cash generated from financing activities	2,991	24,758
Net change in cash, cash equivalents and restricted cash	(47)	15,293
Cash, cash equivalents and restricted cash, beginning balance	6,730	2,937	$ 2,937
Cash, cash equivalents and restricted cash, ending balance	6,683	18,230	$ 6,730
Supplementary Disclosure of Cash Flow Information
Interest on loan and note payable	109	235
Non-cash financing and investing activities:
Asset retirement costs charged to mineral property interests	417	349
Mining equipment acquired through issuance of debt	0	514
Mineral property expenditures included in accounts payable	0	165
Extension fee added to principal balance	75	0
Non-cash amortization of discount and interest expense	$ 1,473	$ 555