Condensed Consolidated Statements of Stockholders' Equity and Contingently Redeemable Non-controlling Interest (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total Great Elm Group Inc. Stockholders' Equity	Non-controlling Interest
Beginning balance at Jun. 30, 2021	$ 52,785	$ 26	$ 3,307,613	$ (3,264,403)	$ 43,236	$ 9,549
Beginning balance (in shares) at Jun. 30, 2021		25,948,000
Beginning balance, Contingently redeemable non-controlling interest at Jun. 30, 2021	2,639
Net (loss) income	(99)			(200)	(200)	101
Net (loss) income, Contingently redeemable non-controlling interest	205
Issuance of interests in Consolidated Funds, net	527					527
Issuance of common stock related to vesting of restricted stock (in shares)		145,000
Stock-based compensation	581		581		581
Ending balance at Sep. 30, 2021	53,794	$ 26	3,308,194	(3,264,603)	43,617	10,177
Ending balance (in shares) at Sep. 30, 2021		26,093,000
Ending balance, Contingently redeemable non-controlling interest at Sep. 30, 2021	2,844
Beginning balance at Jun. 30, 2022	$ 40,029	$ 29	3,312,763	(3,279,296)	33,496	6,533
Beginning balance (in shares) at Jun. 30, 2022	28,507,490	28,507,000
Beginning balance, Contingently redeemable non-controlling interest at Jun. 30, 2022	$ 2,225
Net (loss) income	(9,201)			(8,291)	(8,291)	(910)
Net (loss) income, Contingently redeemable non-controlling interest	662
Distributions to non-controlling interests in Consolidated Fund	(634)					(634)
Issuance of common stock related to vesting of restricted stock (in shares)		267,000
Stock-based compensation	834		834		834
Ending balance at Sep. 30, 2022	$ 31,028	$ 29	$ 3,313,597	$ (3,287,587)	$ 26,039	$ 4,989
Ending balance (in shares) at Sep. 30, 2022	28,774,320	28,774,000
Ending balance, Contingently redeemable non-controlling interest at Sep. 30, 2022	$ 2,887