Discontinued Operations - Details of statements of operations from discontinued operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Net Revenues	$ 8,510	$ 10,640	$ 17,065	$ 18,089
Costs and Expenses [Abstract]
Salaries, wages and benefits	2,668	2,481	5,285	5,004
Supplies	39	35	73	65
Other operating expenses	784	720	1,690	1,253
Rent and lease expense	92	92	183	184
Depreciation and amortization	318	288	618	557
Operating Loss	(433)	2,270	(883)	1,653
Other Income (Expense):
Interest income (expense), net	29	5	51	5
Loss from Discontinued Operations before income taxes	(404)	2,276	(830)	1,671
Income Tax Expense (Benefit)	3	(1)	5	(1)
Loss from Discontinued Operations, net of tax	(2,668)	(326)	(3,584)	(1,279)
Life Sciences And Engineering Segment [Member]
Net Revenues	2,771	3,752	5,443	7,352
Costs and Expenses [Abstract]
Salaries, wages and benefits	1,844	2,261	3,742	5,068
Supplies	267	367	556	673
Purchased services	600	777	1,307	1,576
Other operating expenses	529	645	1,057	1,118
Rent and lease expense	34	34	67	60
Depreciation and amortization	133	0	266	199
Operating Loss	(636)	(332)	(1,552)	(1,342)
Other Income (Expense):
Federal Stimulus Provider Relief Funds	0	0	0	61
Gains on sale of assets	0	1	0	1
Interest income (expense), net	0	5	0	1
Loss from Discontinued Operations before income taxes	(636)	(326)	(1,552)	(1,279)
Impairment loss of Trace Assets and related sale expenses before income taxes	(2,032)	0	(2,032)	0
Loss from Discontinued Operations before income taxes	(2,668)	(326)	(3,584)	(1,279)
Income Tax Expense (Benefit)	0	0	0	0
Loss from Discontinued Operations, net of tax	$ (2,668)	$ (326)	$ (3,584)	$ (1,279)