Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Tables)

v3.8.0.1
Stockholders' Equity (Tables)
 6 Months Ended
Jan. 31, 2018
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
January 31,		     Six months ended
January 31,		  
    2018     2017     2018     2017  
Stock options   $ 205     $ 236     $ 407     $ 382  
Restricted stock     3       5       6       10  
    $ 208     $ 241     $ 413     $ 392  
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
January 31,		     Six months ended
January 31,		  
    2018     2017     2018     2017  
Cost of clinical laboratory services   $ —     $ 1     $ —     $ 3  
Selling, general and administrative     208       240       413       389  
    $ 208     $ 241     $ 413     $ 392  
Share-based Compensation, Stock Options, Activity [Table Text Block] The following table summarizes stock option activity during the six month period ended January 31, 2018:

    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     112,580     $ 8.36              
Exercised     (569,602 )   $ 3.02         $ 5,594  
Cancelled or expired     (26,334 )   $ 5.82              
Outstanding at end of period     1,647,639     $ 4.95     2.8 years   $ 6,785  
Exercisable at end of period     1,109,811     $ 4.18     1.4 years   $ 3,533  
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 six months ended January 31, 2018 is as follows:

    Awards     Weighted
Average
Award Price		  
Outstanding at July 31, 2017     7,436     $ 4.45  
Awarded     —       —  
Vested     (2,062 )   $ (5.92 )
Forfeited     —       —  
Unvested at end of period     5,374     $ 3.23