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v3.20.1

Summary of Business and Significant Accounting Policies - ESPP and Stock Option Awards (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Mar. 31, 2020 | Mar. 31, 2019
Stock Options |  |  |  |
Stock-based awards |  |  |  |
Options granted during period | 46,550 | 24,000 | 294,875 | 237,250
Options granted during period, weighted-average price (in dollars per share) | $ 5.12 | $ 7.86 | $ 4.42 | $ 5.21
Total compensation cost, net of forfeitures, of all options granted but not yet vested | $ 1,300 |  | $ 1,300 |
Weighted average period over which unrecognized compensation is expected to be recognized |  |  | 1 year 2 months 1 day |
Issuance of common stock upon exercise of stock options (in shares) | 52,004 | 276,354 | 141,639 | 492,607
Assumptions |  |  |  |
Volatility | 71.00% | 71.00% | 70.00% | 67.00%
Risk free interest rate | 1.16% | 2.47% | 1.55% | 2.81%
Expected life (in years) | 4 years 4 months 2 days | 4 years 5 months 5 days | 4 years 3 months 29 days | 4 years 4 months 6 days
Expected dividend | 0.00% | 0.00% | 0.00% | 0.00%
Employee Stock Purchase Plan (ESPP) |  |  |  |
ESPP |  |  |  |
Percentage of stock price at which stock can be purchased |  |  | 85.00% |
Purchase period |  |  | 6 months |
ESPP purchase rights granted | 69,368 | 94,805 | 69,368 | 94,805
Unrecognized compensation expense | $ 87 | $ 267 | $ 87 | $ 267
ESPP shares available for issuance |  |  | 837,978 |
Assumptions |  |  |  |
Volatility |  |  | 64.00% |
Risk free interest rate |  |  | 2.04% |
Expected life (in years) |  |  | 6 months |
Employee Stock Purchase Plan (ESPP) | Minimum |  |  |  |
ESPP |  |  |  |
Percentage of base earnings that can be withheld |  |  | 1.00% |
Employee Stock Purchase Plan (ESPP) | Maximum |  |  |  |
ESPP |  |  |  |
Offering period |  |  | 27 months |
Percentage of base earnings that can be withheld |  |  | 15.00% |

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