Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS)	$ 32,146	$ (1,209)	$ 34,206	$ (13,109)
Adjustments:
Amortization	31,973	27,876	61,910	64,038
Accretion	2,965	2,908	5,870	5,755
Deferred income taxes	5,100	(1,545)	5,224	(7,032)
Loss on debt extinguishment	0	0	9,173	0
Fair value adjustments, net	(37,239)	(10,067)	(33,440)	(1,248)
Stock-based compensation	3,256	2,287	7,512	4,300
Gain on Modification of Lease	0	0	0	(4,051)
Inventory Write-down	0	5,208	0	15,589
Revenue Recognized	(7,255)	(8,134)	(15,601)	(15,682)
Foreign exchange and other	496	(913)	(1,832)	(2,005)
Changes in operating assets and liabilities:
Receivables	961	(1,536)	1,960	(2,349)
Prepaid expenses and other current assets	1,328	1,081	673	735
Inventories	3,259	(8,056)	(14,227)	(29,981)
Accounts payable and accrued liabilities	21,069	2,047	(7,728)	(13,004)
CASH PROVIDED (USED IN) BY OPERATING ACTIVITIES	58,059	9,947	53,700	1,956
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(78,223)	(16,682)	(137,647)	(38,890)
Proceeds from the sale of assets	968	9	5,556	4,515
Purchase of investments	(876)	0	(876)	0
Sale of investments	0	19,802	935	19,802
Other	(13)	(183)	(30)	(200)
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(78,144)	2,946	(132,062)	(14,773)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of notes and bank borrowings, net of issuance costs	0	100,000	367,493	150,000
Payments on long-term debt, capital leases, and associated costs	(9,611)	(95,713)	(253,578)	(101,614)
Gold production royalty payments	0	0	0	(18,750)
Other	(233)	141	(4,158)	(1,832)
CASH PROVIDED (USED IN) BY FINANCING ACTIVITIES	(9,844)	4,428	109,757	27,804
Effect of exchange rate changes on cash and cash equivalents	(56)	929	(107)	303
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(29,985)	18,250	31,288	15,290
Cash, cash equivalents and restricted cash at beginning of period	155,443	54,058	94,170	57,018
Cash, cash equivalents and restricted cash at end of period	$ 125,458	$ 72,308	$ 125,458	$ 72,308