CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Unaudited) - 6 months ended Oct. 31, 2018 - USD ($) |
Common Stock [Member] |
Additional Paid-In Capital [Member] |
Treasury Stock [Member] |
Accumulated Deficit [Member] |
Total |
|---|---|---|---|---|---|
| Balance at Apr. 30, 2018 | $ 18,334 | $ 66,557,005 | $ (70,000) | $ (32,771,748) | $ 33,733,591 |
| Balance, shares at Apr. 30, 2018 | 18,333,521 | Ìý | Ìý | Ìý | Ìý |
| Stock-based compensation | 515,291 | 515,291 | |||
| Common stock issued for cashless stock options exercised | $ 31 | (31) | |||
| Common stock issued for cashless stock options exercised, shares | 30,764 | Ìý | Ìý | Ìý | Ìý |
| Common stock issued for stock options exercised for cash | $ 26 | 60,076 | 60,102 | ||
| Common stock issued for stock options exercised for cash, shares | 26,807 | Ìý | Ìý | Ìý | Ìý |
| Purchase of treasury stock, net of broker fees. | (7,370,000) | (7,370,000) | |||
| Re-sale of treasury stock, net of broker fees. | 7,370,000 | 7,370,000 | |||
| Fees associated with equity raise | (29,832) | (29,832) | |||
| Net loss | Ìý | (5,312,354) | (5,312,354) | ||
| Balance at Oct. 31, 2018 | $ 18,391 | $ 67,102,509 | $ (70,000) | $ (38,084,102) | $ 28,966,798 |
| Balance, shares at Oct. 31, 2018 | 18,391,092 | Ìý | Ìý | Ìý | Ìý |
| X | ||||||||||
- Definition Common stock issued for cashless stock option exercises, shares. No definition available.
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- Definition Common stock issued for cashless warrant exercises, value. No definition available.
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- Definition Common stock issued for warrants exercised for cash, shares. No definition available.
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- Definition Common stock issued for warrants exercised for cash, value. No definition available.
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- Definition Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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/disclosureRef
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- Definition Number of shares issued which are neither cancelled nor held in the treasury. No definition available.
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- Definition Equity impact of the value of treasury stock (units) reissued during the period, excluding reissuance of shares (units) held in treasury used to satisfy equity-based compensation obligations exercised by the holders of such rights. Upon reissuance of shares (units) from treasury, either the common or preferred stock (unit) reissued is outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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