Segment Reporting (Details) - Schedule of operating results of the reportable segments - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Clinical Services [Member]
Segment Reporting Information [Line Items]
Revenues	$ 8,622	$ 18,630	$ 28,619	$ 62,045
Operating costs and expenses:
Cost of revenues	9,993	11,180	30,538	34,969
Research and development	91	666	694	762
Selling, general and administrative	6,337	6,756	19,830	19,568
Legal fee expense	21	12	192	217
Total operating costs and expenses	16,442	18,614	51,254	55,516
Operating income (loss)	(7,820)	16	(22,635)	6,529
Other income (expense):
Interest, net	(1)	(2)	(4)	(7)
Other	4	15	16	69
Foreign exchange loss
Income (loss) before income taxes	(7,817)	29	(22,623)	6,591
Depreciation and amortization included above	373	430	1,291	1,286
Share-based compensation included in above:
Selling, general and administrative	65	38	179	74
Cost of revenues	11	4	41	20
Total	76	42	220	94
Capital expenditures	53	202	412	795
Products [Member]
Segment Reporting Information [Line Items]
Revenues	7,485	7,592	22,102	24,742
Operating costs and expenses:
Cost of revenues	4,476	4,869	13,681	14,191
Research and development	872	458	2,675	1,901
Selling, general and administrative	2,641	2,786	7,627	8,920
Legal fee expense	19	10	55	23
Total operating costs and expenses	8,008	8,123	24,038	25,035
Operating income (loss)	(523)	(531)	(1,936)	(293)
Other income (expense):
Interest, net	30	10	84	28
Other	2	(2)	6	3
Foreign exchange loss	347	(1,056)	1,022	(1,887)
Income (loss) before income taxes	(144)	(1,579)	(824)	(2,149)
Depreciation and amortization included above	182	224	518	626
Share-based compensation included in above:
Selling, general and administrative	20	1	61	2
Cost of revenues	6		16
Total	26	1	77	2
Capital expenditures	331	572	1,269	1,788
Other [Member]
Segment Reporting Information [Line Items]
Revenues
Operating costs and expenses:
Cost of revenues
Research and development	12	9	33	34
Selling, general and administrative	3,044	1,900	7,828	8,472
Legal fee expense	4,246	712	6,105	4,621
Total operating costs and expenses	7,302	2,621	13,966	13,127
Operating income (loss)	(7,302)	(2,621)	(13,966)	(13,127)
Other income (expense):
Interest, net	(66)	46	15	140
Other	142	(729)	256	(1,283)
Foreign exchange loss
Income (loss) before income taxes	(7,226)	(3,304)	(13,695)	(14,270)
Depreciation and amortization included above	93	78	267	226
Share-based compensation included in above:
Selling, general and administrative	461	119	1,211	961
Cost of revenues
Total	461	119	1,211	961
Capital expenditures	282	82	506	520
Consolidated [Member]
Segment Reporting Information [Line Items]
Revenues	16,107	26,222	50,721	86,787
Operating costs and expenses:
Cost of revenues	14,469	16,049	44,219	49,160
Research and development	975	1,133	3,402	2,697
Selling, general and administrative	12,022	11,442	35,285	36,960
Legal fee expense	4,286	734	6,352	4,861
Total operating costs and expenses	31,752	29,358	89,258	93,678
Operating income (loss)	(15,645)	(3,136)	(38,537)	(6,891)
Other income (expense):
Interest, net	(37)	54	95	161
Other	148	(716)	278	(1,211)
Foreign exchange loss	347	(1,056)	1,022	(1,887)
Income (loss) before income taxes	(15,187)	(4,854)	(37,142)	(9,828)
Depreciation and amortization included above	648	732	2,076	2,138
Share-based compensation included in above:
Selling, general and administrative	546	158	1,451	1,037
Cost of revenues	17	4	57	20
Total	563	162	1,508	1,057
Capital expenditures	$ 666	$ 856	$ 2,187	$ 3,103