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Note 14 - Share-based Compensation (Tables) | 6 Months Ended
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Mar. 31, 2019
Notes Tables |
Share-based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Number of Shares |  |  | Weighted Average Exercise Price |
Outstanding September 30, 2018 |  |  | 3,394,858 |  |  | $ | 2.18 |
Granted |  |  | - |  |  | $ | - |
Forfeited/expired |  |  | (768,334 | ) |  | $ | 2.99 |
Exercised |  |  | (28,282 | ) |  | $ | 1.60 |
Outstanding March 31, 2019 |  |  | 2,598,242 |  |  | $ | 1.94 |
Exerciseable March 31, 2019 |  |  | 1,702,145 |  |  | $ | 1.93 |
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block] |
|  |  |  |  |  |  |  | Weighted Average |  |  | Weighted Average |  |  |  |  |  |  | Weighted Average |
Range of |  | Number |  |  | Remaining |  |  | Exercise |  |  | Number |  |  | Exercise |
Exercise Prices |  | Outstanding |  |  | Contractual Life |  |  | Price |  |  | Exercisable |  |  | Price |
$0.93 | - | $1.69 |  |  | 577,766 |  |  |  | 4.20 |  |  | $ | 1.57 |  |  |  | 560,545 |  |  | $ | 1.57 |
$1.71 | - | $1.86 |  |  | 525,226 |  |  |  | 3.29 |  |  | $ | 1.80 |  |  |  | 461,257 |  |  | $ | 1.81 |
$1.99 | - | $1.99 |  |  | 1,125,000 |  |  |  | 4.34 |  |  | $ | 1.99 |  |  |  | 312,500 |  |  | $ | 1.99 |
$2.02 | - | $3.13 |  |  | 360,250 |  |  |  | 2.59 |  |  | $ | 2.55 |  |  |  | 357,843 |  |  | $ | 2.55 |
$3.17 | - | $3.17 |  |  | 10,000 |  |  |  | 2.64 |  |  | $ | 3.17 |  |  |  | 10,000 |  |  | $ | 3.17 |
|  |  |  |  | 2,598,242 |  |  |  |  |  |  |  |  |  |  |  | 1,702,145 |  |  |  |  |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  | Number of Shares |
Outstanding September 30, 2018 |  |  | 218,330 |
Granted |  |  | 249,300 |
Released |  |  | (156,115 | )
Forfeited/cancelled |  |  | - |
Outstanding March 31, 2019 |  |  | 311,515 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Three months ended |
|  | March 31, 2018 |
Volatility |  |  | 45.4% |
Risk free interest rate |  |  | 2.2% |
Forfeiture rate |  |  | 10.0% |
Dividend yield |  |  | 0.0% |
Expected life in years |  |  | 4.6 |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three months ended |  |  | Six months ended |
|  | March 31, |  |  | March 31, |
|  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Cost of revenues |  | $ | 4,201 |  |  | $ | 5,047 |  |  | $ | 8,499 |  |  | $ | 11,256 |
Selling, general and administrative |  |  | 154,250 |  |  |  | 120,113 |  |  |  | 266,101 |  |  |  | 229,455 |
Research and development |  |  | 13,524 |  |  |  | 20,609 |  |  |  | 31,220 |  |  |  | 43,539 |
|  | $ | 171,975 |  |  | $ | 145,769 |  |  | $ | 305,820 |  |  | $ | 284,250 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + 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 -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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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=116856206&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=116856206&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=116856206&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=116856206&loc=d3e5070-113901 + Details
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