Summary of significant accounting policies (Tables)
|
12 Months Ended |
Jul. 31, 2017 |
|---|
| Accounting Policies [Abstract] |
|
| Schedule Of Segment Revenue And Revenue Percentage [Table Text Block] |
The following table summarizes the Clinical Lab segment’s net revenues and revenue percentages by revenue category:
| |
|
Years Ended July 31, |
| |
|
2017 |
|
|
2016 |
|
|
2015 |
|
| Revenue category |
|
Amount |
|
|
% |
|
|
Amount |
|
|
% |
|
|
Amount |
|
|
% |
|
| Third-party payers |
|
$ |
43,059 |
|
|
|
56 |
|
|
$ |
34,454 |
|
|
|
49 |
|
|
$ |
30,685 |
|
|
|
49 |
|
| Patient self-pay |
|
|
11,380 |
|
|
|
15 |
|
|
|
14,744 |
|
|
|
21 |
|
|
|
11,028 |
|
|
|
17 |
|
| Medicare |
|
|
12,705 |
|
|
|
16 |
|
|
|
11,392 |
|
|
|
16 |
|
|
|
11,981 |
|
|
|
19 |
|
| HMO’s |
|
|
10,263 |
|
|
|
13 |
|
|
|
10,325 |
|
|
|
14 |
|
|
|
9,720 |
|
|
|
15 |
|
| Total |
|
$ |
77,407 |
|
|
|
100 |
% |
|
$ |
70,915 |
|
|
|
100 |
% |
|
$ |
63,414 |
|
|
|
100 |
% |
|
| Schedule Of Accounts Receivable By Segment [Table Text Block] |
The following is a table of the Company’s net accounts receivable by segment.
| |
|
July 31, 2017 |
|
|
July 31, 2016 |
|
| Net accounts receivable by segment |
|
Amount |
|
|
% |
|
|
Amount |
|
|
% |
|
| Clinical Labs (by billing category) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Third party payers |
|
$ |
7,256 |
|
|
|
64 |
|
|
$ |
5,861 |
|
|
|
57 |
|
| Patient self-pay |
|
|
1,591 |
|
|
|
14 |
|
|
|
1,676 |
|
|
|
16 |
|
| Medicare |
|
|
1,385 |
|
|
|
12 |
|
|
|
1,486 |
|
|
|
14 |
|
| HMO’s |
|
|
1,169 |
|
|
|
10 |
|
|
|
1,341 |
|
|
|
13 |
|
| Total Clinical Labs |
|
|
11,401 |
|
|
|
100 |
% |
|
|
10,364 |
|
|
|
100 |
% |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Total Life Sciences |
|
|
3,779 |
|
|
|
|
|
|
|
4,228 |
|
|
|
|
|
| Total accounts receivable – net |
|
$ |
15,180 |
|
|
|
|
|
|
$ |
14,592 |
|
|
|
|
|
|
| Schedule of Allowance for Doubtful Accounts Receivable [Table Text Block] |
Changes in the Company’s allowance for doubtful accounts are as follows:
| |
|
July 31, 2017 |
|
|
July 31, 2016 |
|
| Beginning balance |
|
$ |
3,517 |
|
|
$ |
1,786 |
|
| Provision for doubtful accounts |
|
|
2,775 |
|
|
|
2,336 |
|
| Write-offs |
|
|
(2,716 |
) |
|
|
(605 |
) |
| Ending balance |
|
$ |
3,576 |
|
|
$ |
3,517 |
|
|
| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
The following table sets forth the computation of basic and diluted net loss per share for the years ended July 31:
| |
|
2017 |
|
|
2016 |
|
|
2015 |
|
| Net (loss) income |
|
$ |
(2,504 |
) |
|
$ |
45,286 |
|
|
$ |
(2,285 |
) |
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Weighted-average common shares outstanding - basic |
|
|
46,350 |
|
|
|
46,153 |
|
|
|
45,355 |
|
| Add: effect of dilutive stock options and restricted stock |
|
|
— |
|
|
|
449 |
|
|
|
— |
|
| Weighted-average common shares outstanding - diluted |
|
|
46,350 |
|
|
|
46,602 |
|
|
|
45,355 |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| Net (loss) income per share – basic |
|
$ |
(0.05 |
) |
|
$ |
0.98 |
|
|
$ |
(0.05 |
) |
| Net (loss) income per share – diluted |
|
$ |
(0.05 |
) |
|
$ |
0.97 |
|
|
$ |
(0.05 |
) |
|
| Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
The following table sets forth the amount of expense related to share-based payment arrangements included in specific line items in the accompanying statement of operations for the years ended July 31:
| |
|
2017 |
|
|
2016 |
|
|
2015 |
|
| Cost of clinical laboratory services |
|
$ |
6 |
|
|
$ |
6 |
|
|
$ |
5 |
|
| Research and development |
|
|
— |
|
|
|
— |
|
|
|
2 |
|
| Selling, general and administrative |
|
|
825 |
|
|
|
519 |
|
|
|
422 |
|
| |
|
$ |
831 |
|
|
$ |
525 |
|
|
$ |
429 |
|
|