Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Revenues:
Rental income	$ 5,787	$ 6,474	$ 18,731	$ 19,848
Revenue	15,121	16,236	48,355	48,158
Operating costs and expenses:
Durable medical equipment other operating expenses	6,084	8,079	21,834	22,607
Depreciation and amortization	1,048	1,053	3,090	3,250
Selling, general and administrative	1,854	1,801	4,582	4,935
Total operating costs and expenses	15,500	17,245	50,368	50,311
Operating loss	(379)	(1,009)	(2,013)	(2,153)
Dividends and interest income	554	491	2,408	1,608
Net realized and unrealized loss on investment in GECC	(1,112)	(9,794)	(454)	(11,603)
Interest expense	(2,179)	(1,754)	(6,047)	(5,083)
Loss on extinguishment of debt			(1,866)
Other income, net			30	3
Loss, before income taxes	(2,961)	(12,066)	(7,721)	(17,228)
Income tax benefit (expense)	43	148	(6)	5
Net loss	(2,918)	(11,918)	(7,727)	(17,223)
Less: net loss attributable to non-controlling interest	(158)	(301)	(862)	(676)
Net loss attributable to Great Elm Group, Inc.	$ (2,760)	$ (11,617)	$ (6,865)	$ (16,547)
Net loss attributable to shareholders per share
Basic	$ (0.11)	$ (0.46)	$ (0.27)	$ (0.65)
Diluted	$ (0.11)	$ (0.46)	$ (0.27)	$ (0.65)
Weighted average shares outstanding
Basic	25,757	25,430	25,669	25,401
Diluted	25,757	25,430	25,669	25,401
Consolidated Funds
Operating costs and expenses:
Expenses of consolidated funds	$ 19		$ 27
Net realized and unrealized gain on investments of consolidated funds	155		221
Durable Medical Equipment | Sales and Services
Revenues:
Revenue from contract with customer	8,606	$ 8,933	27,363	$ 25,725
Operating costs and expenses:
Total operating costs and expenses	3,806	3,966	12,716	11,118
Durable Medical Equipment | Rental
Revenues:
Rental income	4,511	5,198	14,907	16,028
Operating costs and expenses:
Total operating costs and expenses	1,657	2,072	5,193	6,522
Investment Management
Revenues:
Revenue from contract with customer	728	829	2,261	2,585
Operating costs and expenses:
Total operating costs and expenses	904	149	2,546	1,504
Real Estate
Operating costs and expenses:
Total operating costs and expenses	128	125	380	375
Real Estate | Rental
Revenues:
Rental income	$ 1,276	$ 1,276	$ 3,824	$ 3,820