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Note 11. Shareholder's Equity (Tables) | 12 Months Ended
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Sep. 30, 2012
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | Stock Options |  |  | Stock Warrants |
|  | Options |  |  | Weighted Average Exercise Price |  |  | Warrants |  |  | Weighted Average Exercise Price |
Outstanding, September 30, 2010 |  |  | 2,345,705 |  |  | $ | 1.01 |  |  |  | 302,000 |  |  | $ | 5.58 |
Granted |  |  | 692,000 |  |  | $ | 1.20 |  |  |  | 114,000 |  |  | $ | 1.47 |
Exercised |  |  | (117,999 | ) |  | $ | 1.03 |  |  |  | — |  |  |  | — |
Forfeited or expired |  |  | (639,502 | ) |  | $ | 1.24 |  |  |  | (209,000 | ) |  | $ | 4.71 |
Outstanding, September 30, 2011 |  |  | 2,280,204 |  |  | $ | 1.00 |  |  |  | 207,000 |  |  | $ | 4.13 |
Granted |  |  | 2,094,667 |  |  | $ | 0.80 |  |  |  | 217,931 |  |  | $ | 1.40 |
Exercised |  |  | (157,921 | ) |  | $ | 0.84 |  |  |  | — |  |  |  | — |
Forfeited or expired |  |  | (1,227,330 | ) |  | $ | 1.00 |  |  |  | (93,000 | ) |  | $ | 7.39 |
Outstanding, September 30, 2012 |  |  | 2,989,620 |  |  | $ | 0.86 |  |  |  | 331,931 |  |  | $ | 1.42 |
Schedule of Nonvested Share Activity [Table Text Block] |
|  | Shares |  |  | Weighted Average Grant-Date Fair Value |
Nonvested at September 30, 2011 |  |  | 1,229,261 |  |  | $ | 1.05 |
Granted |  |  | 2,094,667 |  |  |  | 0.80 |
Vested |  |  | (419,264 | ) |  |  | 0.94 |
Forfeited |  |  | (943,607 | ) |  |  | 0.99 |
Nonvested at September 30, 2012 |  |  | 1,961,057 |  |  | $ | 0.83 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
Outstanding Options |  |  | Exercisable Options |
Exercise Price |  | Number of Options |  |  | Weighted Average Remaining Contractual Life (Years) |  |  | Weighted Average Exercise Price |  |  | Number of Options Exercisable |  |  | Weighted Average Exercise Price |
$0.01 | to | $0.75 |  |  | 1,359,667 |  |  |  | 9.04 |  |  | $ | 0.65 |  |  |  | 44,000 |  |  | $ | 0.68 |
$0.76 | to | $1.00 |  |  | 1,053,703 |  |  |  | 6.67 |  |  |  | 0.89 |  |  |  | 853,703 |  |  |  | 0.90 |
$1.01 | to | $1.10 |  |  | 79,000 |  |  |  | 7.80 |  |  |  | 1.08 |  |  |  | 47,004 |  |  |  | 1.07 |
$1.11 | to | $3.00 |  |  | 497,250 |  |  |  | 9.00 |  |  |  | 1.35 |  |  |  | 83,856 |  |  |  | 1.20 |
|  |  |  |  | 2,989,620 |  |  |  | 8.17 |  |  | $ | 0.86 |  |  |  | 1,028,563 |  |  | $ | 0.92 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Year Ended September 30, |
|  | 2012 |  |  | 2011 |
Expected option life in years |  |  |  | 6.0 |  |  |  |  |  | 6.5 |  |
Expected volatility |  |  |  | 65.00% |  |  |  |  |  | 56.00% |  |
Expected dividend rate |  |  |  | 0.00% |  |  |  |  |  | 0.00% |  |
Risk free interest rate |  |  |  | 1.13 |  |  |  |  |  | 1.86 |  |
Option exercise prices |  |  | $0.59 | to | $1.48 |  |  |  | $1.00 | to | $1.58 |
Weighted average fair value of options granted during the year |  |  |  | $0.51 |  |  |  |  |  | $0.67 |  |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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