Discontinued Operations - Details of statements of operations from discontinued operations (Details) - USD ($)	3 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Net revenues	$ 7,923,000	$ 8,555,000
Costs and Expenses:
Salaries, wages and benefits	3,078,000	2,617,000
Supplies	34,000	34,000
Other operating expenses	804,000	906,000
Rent and lease expense	94,000	91,000
Depreciation and amortization	313,000	300,000
Operating Profit (Loss)	(1,194,000)	(450,000)
Other Income (Expense):
Interest income, net	58,000	22,000
Loss from Discontinued Operations before income taxes	(442,000)	(426,000)
Income Tax Expense	0	2,000
Loss from Discontinued Operations, net of tax	(107,000)	(916,000)
Life Sciences And Engineering Segment [Member]
Net revenues	16,000	2,672,000
Costs and Expenses:
Salaries, wages and benefits	11,000	1,898,000
Supplies	0	289,000
Purchased services	44,000	706,000
Other operating expenses	24,000	528,000
Rent and lease expense	0	34,000
Depreciation and amortization	0	133,000
Operating Profit (Loss)	(63,000)	(916,000)
Other Income (Expense):
Impairment loss of Trace Hospital Real Estate and related sale expenses	(44,000)	0
Loss from Discontinued Operations before income taxes	(107,000)	(916,000)
Income Tax Expense	0	0
Loss from Discontinued Operations, net of tax	$ (107,000)	$ (916,000)