Fair Value of Financial Instruments (Details-2) - USD ($) $ in Thousands		Mar. 31, 2025	Dec. 31, 2024
Assets:
Collateral posted against derivative positions		$ 2,000
Liabilities:
Derivative, right to reclaim collateral			$ 100
Recurring [Member]
Assets:
Derivative assets, net	[1]	2,297	1,321
Liabilities:
Derivative liabilities, net	[1]	437	1,261
Deferred compensation		6,508	6,468
Total liabilities		6,945	7,729
Recurring [Member] | Level 1 [Member]
Assets:
Derivative assets, net	[1]	1,505	987
Liabilities:
Derivative liabilities, net	[1]	160	480
Deferred compensation		0	0
Total liabilities		160	480
Recurring [Member] | Level 2 [Member]
Assets:
Derivative assets, net	[1]	0	0
Liabilities:
Derivative liabilities, net	[1]	0	0
Deferred compensation		6,508	6,468
Total liabilities		6,508	6,468
Recurring [Member] | Level 3 [Member]
Assets:
Derivative assets, net	[1]	792	334
Liabilities:
Derivative liabilities, net	[1]	277	781
Deferred compensation		0	0
Total liabilities		$ 277	$ 781

[1] As of March 31, 2025, MGE received collateral of $2.0 million from counterparties under a master netting agreement for outstanding exchange traded derivative positions on the consolidated balance sheets. As of December 31, 2024, collateral of less than $0.1 million was posted against and netted with derivative liability positions. The fair value of the derivatives disclosed in this table has not been adjusted for the collateral posted.