Discontinued Operations - Details of statements of operations from discontinued operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Net revenues	$ 7,462	$ 8,181	$ 24,527	$ 26,270
Costs and Expenses [Abstract]
Salaries, wages and benefits	2,652	2,543	7,937	7,547
Supplies	36	39	109	104
Other operating expenses	589	601	2,279	1,854
Rent and lease expense	92	92	275	276
Depreciation and amortization	342	316	960	873
Operating Profit (Loss)	(853)	(467)	(1,736)	1,186
Other Income (Expense):
Interest income (expense), net	19	8	70	13
Earnings (Loss) from Continuing Operations before income taxes	(834)	(459)	(1,664)	1,212
Income Tax Benefit	(10)	(6)	(5)	(7)
Loss from Discontinued Operations, net of tax	(572)	(309)	(4,156)	(1,588)
Life Sciences And Engineering Segment [Member]
Net revenues	1,886	3,357	7,329	10,709
Costs and Expenses [Abstract]
Salaries, wages and benefits	917	1,907	4,659	6,975
Supplies	146	237	702	910
Purchased services	280	748	1,587	2,324
Other operating expenses	452	664	1,509	1,782
Rent and lease expense	8	45	75	105
Depreciation and amortization	42	98	308	297
Operating Profit (Loss)	41	(342)	(1,511)	(1,684)
Other Income (Expense):
Losses on sale of assets	(613)	0	(613)	1
Federal Stimulus Provider Relief Funds	0	0	0	61
Interest income (expense), net	0	33	0	34
Loss from Discontinued Operations before income taxes	(572)	(309)	(2,124)	(1,588)
Impairment loss of Trace Assets and related sale expenses before income taxes	0	0	(2,032)	0
Earnings (Loss) from Continuing Operations before income taxes	(572)	(309)	(4,156)	(1,588)
Income Tax Benefit	0	0	0	0
Loss from Discontinued Operations, net of tax	$ (572)	$ (309)	$ (4,156)	$ (1,588)