Quarterly report pursuant to Section 13 or 15(d)

Segment reporting (Details) - Schedule of segment reporting information, by segment

v3.8.0.1
Segment reporting (Details) - Schedule of segment reporting information, by segment - USD ($)
$ in Thousands
 3 Months Ended
Oct. 31, 2017
Oct. 31, 2016
Segment Reporting Information [Line Items]    
Clinical laboratory services $ 20,334 $ 18,558
Product revenues 7,081 7,426
Royalty and license fee income 261 300
Total revenues 27,676 26,284
Cost of clinical laboratory services 12,042 10,896
Cost of product revenues 3,389 3,309
Research and development 747 822
Selling, general and administrative 10,891 11,494
Provision for uncollectible accounts receivable 814 669
Legal fee expense 431 372
Operating income (loss) (638) (1,278)
Other 36 119
Foreign exchange loss (195) (361)
Share-based compensation 205 151
Selling, General and Administrative Expenses [Member]    
Segment Reporting Information [Line Items]    
Share-based compensation 205 149
Clinical Labs [Member]    
Segment Reporting Information [Line Items]    
Clinical laboratory services 20,334 18,558
Total revenues 20,334 18,558
Cost of clinical laboratory services 12,042 10,896
Selling, general and administrative 6,095 5,952
Provision for uncollectible accounts receivable 800 666
Legal fee expense 13 52
Total operating costs and expenses 18,950 17,566
Operating income (loss) 1,384 992
Interest (25) (29)
Other 14 102
Income (loss) before income taxes 1,373 1,065
Depreciation and amortization included above 404 401
Capital expenditures 418 412
Clinical Labs [Member] | Selling, General and Administrative Expenses [Member]    
Segment Reporting Information [Line Items]    
Share-based compensation 32 17
Clinical Labs [Member] | Total [Member]    
Segment Reporting Information [Line Items]    
Share-based compensation 32 19
Life Sciences [Member]    
Segment Reporting Information [Line Items]    
Product revenues 7,081 7,426
Royalty and license fee income 261 300
Total revenues 7,342 7,726
Cost of product revenues 3,389 3,309
Research and development 523 627
Selling, general and administrative 2,614 2,946
Provision for uncollectible accounts receivable 14 3
Legal fee expense 3 12
Total operating costs and expenses 6,543 6,897
Operating income (loss) 799 829
Interest 12 10
Other 7  
Foreign exchange loss (195) (361)
Income (loss) before income taxes 623 478
Depreciation and amortization included above 326 508
Capital expenditures 43 102
Life Sciences [Member] | Selling, General and Administrative Expenses [Member]    
Segment Reporting Information [Line Items]    
Share-based compensation 23 11
Life Sciences [Member] | Total [Member]    
Segment Reporting Information [Line Items]    
Share-based compensation 23 11
Therapeutics [Member]    
Segment Reporting Information [Line Items]    
Research and development 224 195
Total operating costs and expenses 224 195
Operating income (loss) (224) (195)
Income (loss) before income taxes (224) (195)
Other Segments [Member]    
Segment Reporting Information [Line Items]    
Selling, general and administrative 2,182 2,596
Legal fee expense 415 308
Total operating costs and expenses 2,597 2,904
Operating income (loss) (2,597) (2,904)
Interest 170 65
Other 15 17
Income (loss) before income taxes (2,412) (2,822)
Depreciation and amortization included above 19 18
Other Segments [Member] | Selling, General and Administrative Expenses [Member]    
Segment Reporting Information [Line Items]    
Share-based compensation 150 121
Other Segments [Member] | Total [Member]    
Segment Reporting Information [Line Items]    
Share-based compensation 150 121
Consolidated [Member]    
Segment Reporting Information [Line Items]    
Clinical laboratory services 20,334 18,558
Product revenues 7,081 7,426
Royalty and license fee income 261 300
Total revenues 27,676 26,284
Cost of clinical laboratory services 12,042 10,896
Cost of product revenues 3,389 3,309
Research and development 747 822
Selling, general and administrative 10,891 11,494
Provision for uncollectible accounts receivable 814 669
Legal fee expense 431 372
Total operating costs and expenses 28,314 27,562
Operating income (loss) (638) (1,278)
Interest 157 46
Other 36 119
Foreign exchange loss (195) (361)
Income (loss) before income taxes (640) (1,474)
Depreciation and amortization included above 749 927
Capital expenditures 461 514
Consolidated [Member] | Selling, General and Administrative Expenses [Member]    
Segment Reporting Information [Line Items]    
Share-based compensation 205 149
Consolidated [Member] | Total [Member]    
Segment Reporting Information [Line Items]    
Share-based compensation $ 205 $ 151