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6. Stockholders' Equity (Tables)
 3 Months Ended
Sep. 30, 2020
Schedule of share-based compensation expense by functional line item

The following table presents a summary of share-based compensation expense included in each functional line item on our accompanying unaudited condensed consolidated statements of operations:

 

    Three Months Ended  
    September 30,  
    2020     2019  
    (In thousands)  
Cost of revenue   $ 58     $ 24  
Selling, general and administrative     445       459  
Research and development     100       95  
Total share-based compensation expense   $ 603     $ 578  
Schedule of unrecognized share-based compensation expense

The following table presents the remaining unrecognized share-based compensation expense related to our outstanding share-based awards as of September 30, 2020:

 

             
    Remaining     Remaining  
    Unrecognized     Weighted-  
    Compensation     Average Years  
    Expense     To Recognize  
      (In thousands)          
Stock options   $ 1,125       2.3  
RSUs     3,795       3.3  
PSUs     471       1.8  
Stock purchase rights under ESPP     49       0.1  
    $ 5,440          
Stock Options [Member]  
Summary of stock option activity

The following table presents a summary of activity during the three months ended September 30, 2020 with respect to our stock options:

 

          Weighted-  
          Average  
    Number of     Exercise Price  
    Shares     per Share  
      (In thousands)          
Balance of options outstanding at June 30, 2020     2,055     $ 2.72  
Forfeited     (32 )     1.70  
Expired     (4 )     0.62  
Exercised     (199 )     1.83  
Balance of options outstanding at September 30, 2020     1,820     $ 2.83  
Restricted Stock Units (RSUs) [Member]  
Summary of stock option activity

The following table presents a summary of activity during the three months ended September 30, 2020 with respect to our RSUs:

 

          Weighted-  
          Average  
          Grant Date  
    Number of     Fair Value  
    Shares     per Share  
      (In thousands)          
Balance of RSUs outstanding at June 30, 2020     927     $ 3.93  
Granted     215       4.71  
Vested     (89 )     3.38  
Forfeited     (14 )     2.80  
Balance of RSUs outstanding at September 30, 2020     1,039     $ 4.05  
Performance Stock Units [Member]  
Summary of stock option activity

The following table presents a summary of activity during the three months ended September 30, 2020 with respect to our PSUs:

 

    Number of Shares  
      (In thousands)  
Balance of PSUs outstanding at June 30, 2020     985  
Forfeited     (115 )
Vested     (201 )
Balance of PSUs outstanding at September 30, 2020     669  
ESPP [Member]  
Summary of stock option activity

The following table presents a summary of activity during the three months ended September 30, 2020 under our ESPP:

 

    Number of  
    Shares  
      (In thousands)  
Shares available for issuance at June 30, 2020     404  
Shares issued     –  
Shares available for issuance at September 30, 2020     404