BUSINESS COMBINATIONS (Details)						9 Months Ended
	May 14, 2021 USD ($) shares	Apr. 01, 2021 USD ($) $ / shares shares	Mar. 31, 2021 a subsidiary	Sep. 24, 2020 owner	Feb. 12, 2020	Sep. 30, 2021 USD ($) subsidiary shares	Sep. 30, 2020 USD ($)
Preferred Units [Line Items]
Shares issued in business reorganization (in shares)		576,000
Payment for business reorganization | $		$ 2,000,000				$ 2,000,000	$ 0
Consideration transferred | $		7,000,000
Equity interest issued value | $		$ 5,000,000
Issuance price (in dollars per share) | $ / shares		$ 8.68
Shares exchanged (in shares)		14,400
Common stock outstanding (in shares)						140,674
Convertible Series A preferred shares | Private Placement
Preferred Units [Line Items]
Stock issued and sold during period (in shares)		9,792,000
Sale of stock (in USD per share) | $ / shares		$ 8.68
Sale of stock, consideration received | $		$ 85,000,000
Payments of fees | $		6,300,000
Payments of debt issuance costs | $		$ 631,897
Convertible Series B preferred shares | Private Placement
Preferred Units [Line Items]
Stock issued and sold during period (in shares)	1,817,035
Sale of stock, consideration received | $	$ 20,000,305
Payments of fees | $	1,600,000
Payments of debt issuance costs | $	$ 148,575
Stronghold LLC
Preferred Units [Line Items]
Shares exchanged in business reorganization (in shares)		14,400
Q Power LLC
Preferred Units [Line Items]
Shares exchanged (in shares)		14,400
Q Power LLC | Common - Class V
Preferred Units [Line Items]
Common stock outstanding (in shares)		27,057,600
Q Power LLC | Common Class A
Preferred Units [Line Items]
Common stock outstanding (in shares)		14,400
Stronghold LLC
Preferred Units [Line Items]
Ownership percentage by noncontrolling owners		31.00%
Q Power LLC
Preferred Units [Line Items]
Ownership interest per member				50.00%
Number of owners | owner				2
Q Power LLC | Stronghold LLC
Preferred Units [Line Items]
Shares received in business reorganization (in shares)		27,072,000
Q Power LLC | Scrubgrass LP
Preferred Units [Line Items]
Ownership interest			70.00%
Q Power LLC | Stronghold Inc.
Preferred Units [Line Items]
Common stock, ownership percentage		69.00%
Q Power LLC | Stronghold LLC
Preferred Units [Line Items]
Ownership interest		68.90%				68.90%
Q Power LLC | Stronghold Power LLC
Preferred Units [Line Items]
Ownership interest					100.00%
Aspen Scrubgrass Participant LLC | Scrubgrass LP
Preferred Units [Line Items]
Ownership interest			30.00%
Stronghold Inc. | Stronghold LLC | Common - Class V
Preferred Units [Line Items]
Shares exchanged in business reorganization (in shares)		27,072,000
Stronghold LLC
Preferred Units [Line Items]
Conversion ratio		100.00%
Stronghold LLC | Stronghold Inc.
Preferred Units [Line Items]
Shares exchanged in business reorganization (in shares)		10,368,000
Limited partners' capital units outstanding (in shares)		14,400
Preferred units outstanding (in shares)		10,368,000
Stronghold LLC | Q Power LLC
Preferred Units [Line Items]
Common unit outstanding (in shares)		27,057,600
Stronghold LLC | Q Power LLC | Common - Class V
Preferred Units [Line Items]
Shares distributed in business reorganization (in shares)		27,072,000
Scrubgrass Generating Company, L.P.
Preferred Units [Line Items]
Number of subsidiaries | subsidiary			2			2
Clearfield Properties, Inc.
Preferred Units [Line Items]
Area of land (in acres) | a			175