CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)	Sep. 30, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 1,677,233	$ 1,015,857
Assets held for sale, net (Note 2)	6,328,338	10,512,066
Tonogold note receivable (Note 3)	6,397,497	0
Prepaid expenses and other current assets (Note 4)	1,853,832	320,577
Total current assets	25,978,922	11,848,500
Mineral rights and properties, net (Note 5)	6,497,644	6,497,644
Properties, plant and equipment, net (Note 6)	8,781,408	7,244,188
Reclamation bond deposit	2,695,638	2,688,962
Other assets	377,933	374,548
TOTAL ASSETS	48,170,095	39,569,892
CURRENT LIABILITIES:
Accounts payable	736,777	922,553
Accrued expenses and other liabilities (Note 9)	449,871	1,855,431
Deposits (Note 10)	498,122	318,384
Liabilities held for sale, net (Note 2)	0	1,019,705
Long-term debt, net of discount– current portion (Note 11)	4,690,155	328,068
Total current liabilities	6,374,925	4,444,141
LONG-TERM LIABILITIES:
Long-term debt, net of discount (Note 11)	75,099	5,084,006
Long-term reclamation liability (Note 12)	6,049,741	6,034,208
Other liabilities	480,257	514,977
Total long-term liabilities	6,605,097	11,633,191
Total liabilities	12,980,022	16,077,332
COMMITMENTS AND CONTINGENCIES (Note 14)
EQUITY:
Preferred Stock, $0.000666 par value, 50,000,000 shares authorized, no shares issued	0	0
Common stock, $0.000666 par value, 158,000,000 shares authorized, 34,440,766 and 27,236,489 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	22,937	18,139
Additional paid-in capital	252,715,337	259,095,152
Accumulated deficit	(217,548,201)	(235,890,272)
Total Comstock Mining Inc. stockholders' equity	35,190,073	23,223,019
Noncontrolling interest (Note 20)	0	269,541
Total equity	35,190,073	23,492,560
TOTAL LIABILITIES AND EQUITY	48,170,095	39,569,892
Tonogold Resources, Inc.
CURRENT ASSETS:
Investments in Tonogold shares (Note 3)	9,722,022	0
Investment in affiliates, subsidiaries and joint ventures	0	9,080,000
EQUITY:
Preferred Stock, $0.000666 par value, 50,000,000 shares authorized, no shares issued	2,600,000	6,100,000
Common stock, $0.000666 par value, 158,000,000 shares authorized, 34,440,766 and 27,236,489 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	7,100,000
Mercury Clean Up LLC
CURRENT ASSETS:
Deposits for investment	1,901,050	1,501,050
MCU Philippines Inc
CURRENT ASSETS:
Deposits for investment	1,000,000	0
Pelen LLC
CURRENT ASSETS:
Investment in affiliates, subsidiaries and joint ventures	602,500	0
Sierra Springs, LLC
CURRENT ASSETS:
Investment in affiliates, subsidiaries and joint ventures	335,000	335,000
Deposits for investment	$ 300,000	$ 300,000