SUBSEQUENT EVENTS (Details) - Credit Facility $ in Thousands		3 Months Ended
	Jul. 14, 2021 CAD ($) quarter	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2021 CAD ($)
MGE Niagara Amended Credit Agreement | Forecast
Subsequent Event [Line Items]
Maximum total leverage ratio			4.50
MGE Niagara Amended Credit Agreement | Subsequent Event
Subsequent Event [Line Items]
Gaming capacity percentage (in a percent)	50.00%
Undrawn commitment fee percentage	1.25%
Minimum weekly liquidity amount	$ 12,500
Minimum net cash subsidy received	3,750
Minimum monthly liquidity amount	$ 15,000
Testing period	12 months
Additional period	6 months
Minimum fixed charge coverage ratio	1.10
Number of quarters | quarter	4
Maximum total leverage ratio	5.00
Total leverage ratio	3.00
Number of recent quarters | quarter	2
MGE Niagara Amended Credit Agreement | Subsequent Event | CDOR
Subsequent Event [Line Items]
Basis spread on variable rate	5.00%
MGE Niagara Amended Credit Agreement | Subsequent Event | Prime Rate
Subsequent Event [Line Items]
Basis spread on variable rate	3.50%
MGE Niagara Amended Credit Agreement | Subsequent Event | Forecast
Subsequent Event [Line Items]
Maximum total leverage ratio		4.00
New MGE Niagara Revolving Facility | Subsequent Event
Subsequent Event [Line Items]
Borrowing capacity	$ 180,000
New MGE Niagara Swingline Facility | Subsequent Event
Subsequent Event [Line Items]
Borrowing capacity	20,000
New MGE Niagara Term Loan Facility | Subsequent Event
Subsequent Event [Line Items]
Borrowing capacity	90,000
New MGE Niagara Resorts Letter Of Credit Sub-Limit
Subsequent Event [Line Items]
Borrowing capacity				$ 100,000
New MGE Niagara Resorts Letter Of Credit Sub-Limit | Subsequent Event
Subsequent Event [Line Items]
Borrowing capacity	$ 45,000