|
Summary of significant accounting policies (Tables)
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12 Months Ended |
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Jul. 31, 2014
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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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2014
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2013
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2012
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Revenue category
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Amount
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%
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Amount
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%
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Amount
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%
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Third-party payers
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$
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29,509
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50
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$
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26,014
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47
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$
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29,616
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50
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|
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Medicare
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12,815
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22
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12,497
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22
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12,658
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21
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Patient self-pay
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11,204
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19
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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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HMO’s
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5,161
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9
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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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Total
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$
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58,689
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|
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100
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%
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$
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55,889
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100
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%
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$
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59,403
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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, 2014
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July 31, 2013
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Net accounts receivable by segment
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Amount
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%
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Amount
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%
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Clinical Labs (by billing category)
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Third party payers
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$
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3,499
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46
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$
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3,395
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46
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Patient self-pay
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2,193
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29
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2,696
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37
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Medicare
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1,558
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21
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930
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13
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HMO’s
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280
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4
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300
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4
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Total Clinical Labs
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7,530
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|
100
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%
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7,321
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100
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%
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Total Life Sciences
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4,940
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4,967
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Total accounts receivable – net
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$
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12,470
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$
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12,288
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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, 2014
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July 31, 2013
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Beginning 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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Provision for doubtful accounts
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3,063
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4,496
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Write-offs
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(3,628
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)
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(5,062
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)
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Ending balance
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$
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2,142
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$
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2,707
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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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2014
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2013
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2012
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Net loss
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|
$
|
(9,977
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)
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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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Weighted-average common shares outstanding - Basic
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42,561
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39,607
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38,798
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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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42,561
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39,607
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38,798
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Net loss per share:
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Basic and diluted
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$
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(0.23
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)
|
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$
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(0.46
|
)
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$
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(1.01
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)
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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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2014
|
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2013
|
|
|
2012
|
|
|
Cost of clinical laboratory services
|
|
$
|
9
|
|
|
$
|
10
|
|
|
$
|
10
|
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Research and development
|
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1
|
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2
|
|
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4
|
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Selling, general and administrative
|
|
|
584
|
|
|
|
533
|
|
|
|
705
|
|
|
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$
|
594
|
|
|
$
|
545
|
|
|
$
|
719
|
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