Summary of Significant Accounting Principles (Tables)

9 Months Ended

Sep. 30, 2021

Cash, Cash Equivalents, And Restricted Cash [Abstract]

Cash, Cash Equivalents, and Restricted Cash

The following table presents the components of total cash, cash equivalents, and restricted cash on the consolidated balance sheets.

	MGE Energy				MGE
	September 30,		December 31,		September 30,		December 31,
(In thousands)	2021		2020		2021		2020
Cash and cash equivalents	$	70,454	$	44,738	$	57,003	$	4,103
Restricted cash		641		644		641		644
Receivable - margin account		550		1,657		550		1,657
Cash, cash equivalents, and restricted cash	$	71,645	$	47,039	$	58,194	$	6,404