CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended				9 Months Ended		12 Months Ended	14 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
OPERATING ACTIVITIES:
Net income (loss)	$ 17,330,062	$ (263,212)	$ 386,897	$ (1,835,065)	$ 18,342,836	$ (3,525,912)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation, amortization, and depletion	776,233		399,375		1,091,904	1,573,236
Accretion (reduction) of reclamation liability					15,533	(392,888)
Gain on sale of mineral rights and properties, plant, and equipment					(100,000)	(3,125)
Amortization of debt discounts and issuance costs					130,175	174,254
Net loss on early retirement of long-term debt					67,127	284,647
Payment-in-kind interest expense					10,257	470,246
Share-based compensation cost					204,249	0
Change in make-whole liabilities					(162,711)	417,341
Preferred shares issuance expense					0	432,000
Gain on sale of membership interests in Comstock Mining LLC	(18,275,846)		0		(18,275,846)	0
Realized gain on sale of Tonogold common shares	(743,535)		0		(767,275)	0
Change in estimated fair value of Tonogold shares	53,610		332,263		(1,282,319)	332,263
Change in estimated fair value of Tonogold note receivable	(256,000)		0		(256,000)	0
Change in fair value of contingent forward asset	647,502		0		(765,880)	0
Gain on final settlement of outstanding amounts due	(144,473)		0		(144,473)	0
Gain on cancellation of Tonogold share option	0		(2,200,000)		0	(2,200,000)
Changes in operating assets and liabilities:
Prepaid expenses and other assets					(67,593)	(72,515)
Accounts payable					(41,303)	401,069
Accrued expenses and other liabilities					(488,365)	(181,460)
Deposits					79,737	8,333
NET CASH USED IN OPERATING ACTIVITIES					(2,409,947)	(2,282,511)
INVESTING ACTIVITIES:
Proceeds from principal payment on note receivable					416	396
Proceeds from sale of mineral rights and properties, plant, and equipment					100,000	3,125
Proceeds from deposits on Membership Interest Purchase Agreement (Note 20)					1,140,000	3,925,000
Proceeds from deposits on the sale of Silver Springs properties to Sierra Springs Opportunity Fund					100,000	0
Proceeds from sale of Tonogold common shares					1,371,909	0
Deposit made toward purchase of mineral rights, properties, plant and equipment	(4,000)		(550,000)		(15,000)	(1,635,000)
Payment for option to purchase additional membership interests in Pelen LLC (Note 21)					(100,000)	0
Advance to Sierra Springs Opportunity Fund Inc (Note 23)					(1,315,000)	0
Change in reclamation bond deposit					(6,676)	(57,803)
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES					(141,851)	1,660,718
FINANCING ACTIVITIES:
Principal payments on debt					(5,074,378)	(3,154,622)
Proceeds from issuance of unsecured promissory notes					4,220,000	0
Proceeds from the issuance of common stock	1,400,000				4,197,622	3,835,867		$ 1,700,000
Common stock issuance costs					(130,070)	(271,460)
NET CASH PROVIDED BY FINANCING ACTIVITIES					3,213,174	409,785
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS					661,376	(212,008)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD		$ 1,015,857		$ 488,657	1,015,857	488,657	$ 276,649
CASH AND CASH EQUIVALENTS, END OF PERIOD	$ 1,677,233		$ 276,649		1,677,233	276,649	$ 1,677,233	$ 276,649
Supplemental disclosure of non-cash investing and financing activities:
Issuance of common shares for Mercury Clean Up LLC make whole liability (Note 22)					314,687	0
Issuance of common shares for stock issuance costs					125,000	0
Issuance of common shares for Northern Comstock LLC membership payments					482,500	482,500
Advance payments from Tonogold for Comstock Mining LLC membership interest purchase					0	5,982,263
Receipt of Tonogold CPS for Comstock Mining LLC membership interest purchase					0	5,650,000
Pelen LLC
INVESTING ACTIVITIES:
Payments to acquire investments					(17,500)
Supplemental disclosure of non-cash investing and financing activities:
Issuance of common shares to purchase membership interests					585,000	0
Mercury Clean Up LLC
INVESTING ACTIVITIES:
Payments to acquire investments					(1,400,000)	(350,000)
Supplemental disclosure of non-cash investing and financing activities:
Issuance of common shares to purchase membership interests					0	751,050
Sierra Springs, LLC
INVESTING ACTIVITIES:
Payments to acquire investments					$ 0	$ (225,000)