Borrowings - Schedule of Subsidiaries' Outstanding Borrowings (Details) - Subsidiaries Outstanding Borrowings - USD ($) $ in Thousands	Mar. 31, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Less current portion of capitalized equipment financing	$ (2,711)	$ (1,974)
Equipment financing debt, net of current portion		67
Equipment Financing \| Great Elm DME Holdings Incorporation
Debt Instrument [Line Items]
Equipment Financing	$ 2,711	$ 2,041

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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