|
Summary of significant accounting policies (Tables)
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12 Months Ended |
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Jul. 31, 2013
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| Accounting Policies [Abstract] |
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| 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:
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Years ended July 31,
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2013
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2012
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2011
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Revenue category
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(in %)
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(in %)
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(in %)
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Medicare
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$
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12,497
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|
|
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22
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|
|
$
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12,658
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|
|
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21
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$
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11,856
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22
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Third-party payers
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|
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26,014
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47
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29,616
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50
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24,335
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46
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Patient self-pay
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12,172
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22
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11,895
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20
|
|
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11,554
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22
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HMO’s
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5,206
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9
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5,234
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9
|
|
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5,017
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10
|
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Total
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$
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55,889
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|
|
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100
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%
|
|
$
|
59,403
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|
|
|
100
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%
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$
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52,762
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|
|
|
100
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%
|
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| Schedule Of Accounts Receivable By Segment [Table Text Block] |
The following is a table of the Company’s net accounts
receivable by segment.
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July 31, 2013
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July 31, 2012
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Net accounts receivable by segment
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(in %)
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(in %)
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Clinical Labs (by billing category)
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Medicare
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$
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930
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13
|
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$
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1,270
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|
|
|
16
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Third party payers
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3,395
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|
46
|
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3,478
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45
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Patient self-pay
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2,696
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37
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2,655
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35
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HMO’s
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|
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300
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|
|
|
4
|
|
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330
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|
|
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4
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Total Clinical Labs
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7,321
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|
|
|
100
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%
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|
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7,733
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|
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100
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%
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|
|
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Total Life Sciences
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4,967
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6,402
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Total accounts receivable – net
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$
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12,288
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$
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14,135
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| Schedule of Allowance for Doubtful Accounts Receivable [Table Text Block] |
Changes in the Company’s allowance for doubtful accounts
are as follows:
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July 31, 2013
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July 31, 2012
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Beginning balance
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$
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3,273
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|
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$
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3,488
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Provision for doubtful accounts
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4,496
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5,104
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Write-offs
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(5,062
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)
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(5,319
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)
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Ending balance
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$
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2,707
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$
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3,273
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| 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:
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2013
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2012
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2011
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Numerator:
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Net loss
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$
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(18,237
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)
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$
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(39,269
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)
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$
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(12,960
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)
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Denominator:
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Weighted-average common shares outstanding - Basic
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39,607
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|
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38,798
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38,357
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Add: effect of dilutive stock options and restricted
stock
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—
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—
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—
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Weighted-average common shares outstanding - Diluted
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39,607
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38,798
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38,357
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|
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Net loss per share
|
|
|
|
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|
|
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Basic and diluted
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$
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(0.46
|
)
|
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$
|
(1.01
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)
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|
$
|
(0.34
|
)
|
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| 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:
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|
2013
|
|
|
2012
|
|
|
2011
|
|
|
Cost of clinical laboratory services
|
|
$
|
10
|
|
|
$
|
10
|
|
|
$
|
10
|
|
|
Research and development
|
|
|
2
|
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|
|
4
|
|
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|
14
|
|
|
Selling, general and administrative
|
|
|
533
|
|
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|
705
|
|
|
|
1,025
|
|
|
|
|
$
|
545
|
|
|
$
|
719
|
|
|
$
|
1,049
|
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