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Stock-Based Compensation (Tables) | 12 Months Ended
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Jul. 31, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of weighted average assumptions in its BSM pricing model |
Fiscal year ended July 31, |  | 2021 |  |  | 2020 |
Expected term |  |  | 6.0 years |  |  |  | 6.0 years |
Volatility |  |  | 92.3 | % |  |  | 82.9 | %
Risk free interest rate |  |  | 0.7 | % |  |  | 1.6 | %
Dividends |  |  | — |  |  |  | — |
Schedule of weighted average grant date fair value of options granted |
|  | Number of Options (in thousands) |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term (in years) |  |  | Aggregate Intrinsic Value (in thousands) |
Outstanding at July 31, 2019 |  |  | 1,231 |  |  | $ | 1.60 |  |  |  | 6.32 |  |  | $ | 642 |
Granted |  |  | 208 |  |  |  | 1.82 |  |  |  |  |  |  |  |  |
Exercised |  |  | (86 | ) |  |  | 0.13 |  |  |  |  |  |  |  |  |
Cancelled / forfeited |  |  | (126 | ) |  |  | 1.35 |  |  |  |  |  |  |  |  |
Outstanding at July 31, 2020 |  |  | 1,227 |  |  | $ | 1.76 |  |  |  | 5.95 |  |  | $ | 402 |
Granted |  |  | 189 |  |  |  | 5.40 |  |  |  |  |  |  |  |  |
Exercised |  |  | (560 | ) |  |  | 1.56 |  |  |  |  |  |  |  |  |
Cancelled / forfeited |  |  | (13 | ) |  |  | 1.48 |  |  |  |  |  |  |  |  |
Outstanding at July 31, 2021 |  |  | 843 |  |  | $ | 2.72 |  |  |  | 6.76 |  |  | $ | 10,657 |
Exercisable at July 31, 2021 |  |  | 548 |  |  | $ | 1.95 |  |  |  | 5.59 |  |  | $ | 7,351 |
Schedule of weighted average grant date fair value of options granted |
July 31, (in thousands except per share amounts) |  | 2021 |  |  | 2020 |
Weighted average grant date fair value of options granted |  | $ | 4.09 |  |  | $ | 1.28 |
Intrinsic value of options exercised |  |  | 3,978 |  |  |  | 109 |
Fair value of awards vested |  |  | 135 |  |  |  | 197 |
Schedule of restricted shares non-vested deferred stock units |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Non-vested stock award as of July 31, 2019 |  |  | 195,375 |  |  | $ | 2.33 |
Granted |  |  | 31,945 |  |  |  | 1.97 |
Vested |  |  | (122,192 | ) |  |  | 2.26 |
Forfeited |  |  | - |  |  |  | - |
Non-vested stock award as of July 31, 2020 |  |  | 105,128 |  |  |  | 2.30 |
Granted |  |  | 113,831 |  |  |  | 3.34 |
Vested |  |  | (91,659 | ) |  |  | 2.24 |
Forfeited |  |  | - |  |  |  | - |
Non-vested stock award as of July 31, 2021 |  |  | 127,300 |  |  | $ | 3.27 |
Schedule of restricted shares non-vested deferred stock units |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Non-vested DSU award as of July 31, 2019 |  |  | - |  |  |  | - |
Granted |  |  | 92,544 |  |  |  | 1.55 |
Vested |  |  | - |  |  |  | - |
Forfeited |  |  | (32,000 | ) |  |  | 1.54 |
Non-vested DSU award as of July 31, 2020 |  |  | 60,544 |  |  | $ | 1.56 |
Granted |  |  | - |  |  |  | - |
Vested |  |  | (17,044 | ) |  |  | 1.60 |
Forfeited |  |  | (6,000 | ) |  |  | 1.54 |
Non-vested DSU award as of July 31, 2021 |  |  | 37,500 |  |  | $ | 1.54 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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