Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.8.0.1
Stockholders' Equity (Tables)
 3 Months Ended
Oct. 31, 2017
Stockholders' Equity Note [Abstract]  
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] The amounts of share-based compensation expense recognized in the periods presented are as follows:

    Three months ended
October 31, 		 
    2017   2016  
Stock options   $ 202   $ 146  
Restricted stock     3     5  
    $ 205   $ 151  
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 statements of operations:

    Three months ended
October 31,		  
    2017     2016  
Cost of clinical laboratory services   $ —     $ 2  
Selling, general and administrative     205       149  
    $ 205     $ 151  
Share-based Compensation, Stock Options, Activity [Table Text Block] The following table summarizes stock option activity during the three month period ended October 31, 2017:

    Options     Weighted
Average
Exercise
Price		     Weighted
Average
Remaining
Contractual
Term		     Aggregate
Intrinsic
Value (000s)		  
Outstanding at July 31, 2017     2,130,995     $ 4.26                  
Awarded     —     $ —                  
Exercised     (487,106 )   $ 3.03             $ 4,940  
Cancelled or expired     (19,334 )   $ 5.92                  
Outstanding at end of period     1,624,555     $ 4.62       2.8 years     $ 12,313  
Exercisable at end of period     903,868     $ 3.39       1.6 years     $ 5,838  
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] A summary of the activity pursuant to the Company’s unvested restricted stock awards for the three months ended October 31, 2017 is as follows:

    Awards     Weighted
Average
Award Price		  
Outstanding at July 31, 2017     7,436     $ 4.45  
Awarded     —       —  
Vested     (1,001 )   $ (4.84 )
Forfeited     —       —  
Unvested at end of period     6,435     $ 3.85