Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS)	$ (54,768)	$ 26,856	$ (20,562)	$ 13,747
Adjustments:
Amortization	30,962	32,216	92,872	96,254
Accretion	3,028	2,969	8,898	8,724
Deferred income taxes	(5,964)	(4,515)	(740)	(11,547)
Loss on debt extinguishment	0	0	9,173	0
Fair value adjustments, net	26,440	(2,243)	(7,000)	(3,491)
Stock-based compensation	2,671	1,969	10,183	6,269
Gain on Modification of Lease	0	0	0	(4,051)
Inventory Write-down	31,249	1,232	31,249	16,821
Revenue Recognized	(307)	(5,485)	(15,908)	(21,167)
Foreign exchange and other	1,493	4,379	(339)	2,374
Changes in operating assets and liabilities:
Receivables	(944)	(1,497)	1,016	(3,846)
Prepaid expenses and other current assets	(80)	(1,921)	593	(1,186)
Inventories	(3,820)	(3,066)	(18,047)	(33,047)
Accounts payable and accrued liabilities	(8,114)	28,570	(15,842)	15,566
CASH PROVIDED (USED IN) BY OPERATING ACTIVITIES	21,846	79,464	75,546	81,420
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(71,266)	(22,996)	(208,913)	(61,886)
Proceeds from the sale of assets	61	730	5,617	5,245
Purchase of investments	(1,079)	(2,500)	(1,955)	(2,500)
Sale of investments	0	0	935	19,802
Other	(12)	(25)	(42)	(225)
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(72,296)	(24,791)	(204,358)	(39,564)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of notes and bank borrowings, net of issuance costs	20,000	0	387,493	150,000
Payments on long-term debt, capital leases, and associated costs	(7,944)	(48,557)	(261,522)	(150,171)
Gold production royalty payments	0	0	0	(18,750)
Other	(20)	114	(4,178)	(1,718)
CASH PROVIDED (USED IN) BY FINANCING ACTIVITIES	12,036	(48,443)	121,793	(20,639)
Effect of exchange rate changes on cash and cash equivalents	(253)	(10)	(360)	293
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(38,667)	6,220	(7,379)	21,510
Cash, cash equivalents and restricted cash at beginning of period	125,458	72,308	94,170	57,018
Cash, cash equivalents and restricted cash at end of period	$ 86,791	$ 78,528	$ 86,791	$ 78,528