Stockholders' Equity - Summary of Changes in Stockholders' Equity (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jan. 31, 2017 |
Jan. 31, 2016 |
Jan. 31, 2017 |
Jan. 31, 2016 |
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| Equity [Abstract] | ||||
| Stockholders' equity at beginning of period | $ 28,053,104 | $ 32,695,621 | ||
| Net loss | $ (5,387,311) | $ (7,037,720) | (10,990,894) | (14,075,111) |
| Public Offering | 6,886,095 | |||
| Stock-based compensation | 2,596,280 | 3,030,225 | ||
| Accumulated other comprehensive income | 14 | |||
| Issuance of common stock through employee stock purchase plan | 25,615 | |||
| Exercise of common stock warrants | 16,808 | |||
| Common stock issued in connection with a contractual agreement | 55,500 | |||
| Stockholders' equity at end of period | $ 19,700,926 | $ 28,592,330 | $ 19,700,926 | $ 28,592,330 |
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- Definition Common stock issued in connection with a contractual agreement. No definition available.
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- Definition Value of shares of stock issued during the period upon exercise of warrants. No definition available.
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- References No definition available.
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of increase (decrease) in other comprehensive income, after tax, from changes classified as other. No definition available.
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- Definition The cash inflow associated with the amount received from entity's first offering of stock to the public. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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