ACQUISTITIONS AND INVESTMENTS - Acquisitions (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 30, 2021
Sep. 07, 2021
Jul. 24, 2021
Jul. 23, 2021
Jun. 18, 2021
Feb. 15, 2021
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Fair value of consideration transferred:                  
Equity method investments             $ 18,566,056 $ 25,515,879 $ 2,937,597
Recognized amounts of identifiable assets acquired                  
Goodwill             12,788,671 12,788,671 $ 0
Plain Sight Innovations Corporation                  
Fair value of consideration transferred:                  
Loans to Plain Sight Innovations LLC prior to acquisition   $ 1,423,328              
Total fair value of consideration transferred   16,376,134              
Recognized amounts of identifiable assets acquired                  
Cash and cash equivalents   100,147              
Deferred tax liability   (1,383,942)              
Total identifiable assets   5,789,738              
Goodwill   10,586,396              
Plain Sight Innovations Corporation | Developed technologies                  
Recognized amounts of identifiable assets acquired                  
Intangible assets   6,579,400              
Plain Sight Innovations Corporation | License agreements                  
Recognized amounts of identifiable assets acquired                  
Intangible assets   494,133              
Plain Sight Innovations Corporation | Restricted Stock                  
Fair value of consideration transferred:                  
Comstock shares of common stock issued   $ 14,952,806              
Shares issued in acquisition (in shares)   8,500,000              
Shares issued (in dollars per share)   $ 1.76              
MANA Corporation                  
Fair value of consideration transferred:                  
Total fair value of consideration transferred       $ 6,528,453          
Performance-based cash payments as percentage of future consolidated net cash flow       20.00%          
Maximum performance-based cash payments as percentage of future consolidated net cash flow       $ 8,600,000          
Recognized amounts of identifiable assets acquired                  
Intangible assets       461,528          
Deferred tax liability       (96,921)          
Total identifiable assets       364,607          
Goodwill       6,163,846          
MANA Corporation | Restricted Stock                  
Fair value of consideration transferred:                  
Comstock shares of common stock issued       $ 6,528,453          
Shares issued in acquisition (in shares)     4,200,000 4,200,000          
Shares issued (in dollars per share)     $ 1.55            
LINICO Corporation                  
Fair value of consideration transferred:                  
Comstock shares of common stock issued           $ 7,258,162      
Equity method investments           8,140,725      
Payment in cash           6,025,034      
Total fair value of consideration transferred             $ 500,000 $ 4,500,000  
Non-controlling interest - fair value           3,400,000      
Total fair value of consideration and non-controlling interest           24,823,921      
Shares issued in acquisition (in shares) 1,700,000                
Shares issued (in dollars per share) $ 2.00                
Recognized amounts of identifiable assets acquired                  
Cash and cash equivalents           94,689      
Other current assets           222,568      
Investment in Green Li-ion           4,577,000      
Investment in equity securities (Comstock common stock)           3,870,000      
Properties, plant and equipment, net           64,000      
Deposits           3,897,526      
Finance lease right of use asset           15,033,000      
Accounts payable           (975,357)      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Lease Liability           (13,043,499)      
Deferred tax liability           (4,250,226)      
Accrued expenses and other liabilities           (97,268)      
Total identifiable assets           24,823,921      
LINICO Corporation | Developed technologies                  
Recognized amounts of identifiable assets acquired                  
Intangible assets           11,803,000      
LINICO Corporation | License agreements                  
Recognized amounts of identifiable assets acquired                  
Intangible assets           3,622,488      
LINICO Corporation | Trademarks                  
Recognized amounts of identifiable assets acquired                  
Intangible assets           $ 6,000      
Renewable Process Solutions, Inc.                  
Fair value of consideration transferred:                  
Total fair value of consideration transferred         $ 2,304,806        
Recognized amounts of identifiable assets acquired                  
Cash and cash equivalents         24,385        
Notes receivable, net         38,459        
Prepaid expenses and other current assets         4,072        
Accounts payable         (33,882)        
Deferred tax liability         (33,440)        
Accrued expenses and other liabilities         (56,300)        
Total identifiable assets         102,531        
Goodwill         2,202,275        
Renewable Process Solutions, Inc. | License agreements                  
Recognized amounts of identifiable assets acquired                  
Intangible assets         16,619        
Renewable Process Solutions, Inc. | Customer agreements                  
Recognized amounts of identifiable assets acquired                  
Intangible assets         122,885        
Renewable Process Solutions, Inc. | Distribution agreements                  
Recognized amounts of identifiable assets acquired                  
Intangible assets         19,733        
Renewable Process Solutions, Inc. | Restricted Stock                  
Fair value of consideration transferred:                  
Comstock shares of common stock issued         $ 2,304,806        
Shares issued in acquisition (in shares)         1,000,000        
Shares issued (in dollars per share)         $ 2.30