v3.26.3
Equity and Financing Arrangements (Details-4) - USD ($)
$ in Thousands
Oct. 01, 2026
Sep. 30, 2026
Short-Term Debt [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity   $ 50,000
Long-Term Line of Credit   0
MGE [Member]    
Short-Term Debt [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity   $ 130,000
MGE [Member] | Subsequent Event [Member]    
Short-Term Debt [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 250,000