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Share-Based Compensation: (Details 2) (USD $) | 12 Months Ended
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Sep. 30, 2013
1998 Plan | Options |
Information about stock options, by exercise price range |
Options outstanding at the end of the period (in shares) | 144,500
Options Outstanding - Weighted-Average Remaining Contractual Life | 2 years 3 months 18 days
Options Outstanding - Weighted-Average Exercise Price (in dollars per share) | $ 12.79
Options exercisable at the end of the period (in shares) | 144,500
Options Exercisable - Weighted-Average Exercise Price (in dollars per share) | $ 12.79
1998 Plan | Range of Exercise Price - $0.00 - $5.00 | Options |
Information about stock options, by exercise price range |
Exercise price, low end of range (in dollars per share) | $ 0.00
Exercise price, high end of range (in dollars per share) | $ 5.00
Options outstanding at the end of the period (in shares) | 12,000
Options Outstanding - Weighted-Average Remaining Contractual Life | 1 day
Options Outstanding - Weighted-Average Exercise Price (in dollars per share) | $ 3.913
Options exercisable at the end of the period (in shares) | 12,000
Options Exercisable - Weighted-Average Exercise Price (in dollars per share) | $ 3.913
1998 Plan | Range of Exercise Price - $5.01 - $10.00 | Options |
Information about stock options, by exercise price range |
Exercise price, low end of range (in dollars per share) | $ 5.01
Exercise price, high end of range (in dollars per share) | $ 10.00
Options outstanding at the end of the period (in shares) | 45,000
Options Outstanding - Weighted-Average Remaining Contractual Life | 3 years 23 days
Options Outstanding - Weighted-Average Exercise Price (in dollars per share) | $ 6.728
Options exercisable at the end of the period (in shares) | 45,000
Options Exercisable - Weighted-Average Exercise Price (in dollars per share) | $ 6.728
1998 Plan | Range of Exercise Price - $10.01 - $15.00 | Options |
Information about stock options, by exercise price range |
Exercise price, low end of range (in dollars per share) | $ 10.01
Exercise price, high end of range (in dollars per share) | $ 15.00
Options outstanding at the end of the period (in shares) | 51,000
Options Outstanding - Weighted-Average Remaining Contractual Life | 1 year 6 months 26 days
Options Outstanding - Weighted-Average Exercise Price (in dollars per share) | $ 12.587
Options exercisable at the end of the period (in shares) | 51,000
Options Exercisable - Weighted-Average Exercise Price (in dollars per share) | $ 12.587
1998 Plan | Range of Exercise Price - $15.01 - $20.00 | Options |
Information about stock options, by exercise price range |
Exercise price, low end of range (in dollars per share) | $ 15.01
Exercise price, high end of range (in dollars per share) | $ 20.00
Options outstanding at the end of the period (in shares) | 4,500
Options Outstanding - Weighted-Average Remaining Contractual Life | 1 year 1 month 25 days
Options Outstanding - Weighted-Average Exercise Price (in dollars per share) | $ 17.822
Options exercisable at the end of the period (in shares) | 4,500
Options Exercisable - Weighted-Average Exercise Price (in dollars per share) | $ 17.822
1998 Plan | Range of Exercise Price - $20.01 - $25.00 |
Information about stock options, by exercise price range |
Exercise price, low end of range (in dollars per share) | $ 20.01
Exercise price, high end of range (in dollars per share) | $ 25.00
Options outstanding at the end of the period (in shares) | 32,000
Options Outstanding - Weighted-Average Remaining Contractual Life | 3 years 4 months 29 days
Options Outstanding - Weighted-Average Exercise Price (in dollars per share) | $ 24.272
Options exercisable at the end of the period (in shares) | 32,000
Options Exercisable - Weighted-Average Exercise Price (in dollars per share) | $ 24.272
2009 Plan | Range of Exercise Price - $0.00 - $5.00 | Options |
Information about stock options, by exercise price range |
Exercise price, low end of range (in dollars per share) | $ 0.00
Exercise price, high end of range (in dollars per share) | $ 5.00
Options outstanding at the end of the period (in shares) | 680,334
Options Outstanding - Weighted-Average Remaining Contractual Life | 8 years 7 months 6 days
Options Outstanding - Weighted-Average Exercise Price (in dollars per share) | $ 3.32
Options exercisable at the end of the period (in shares) | 175,331
Options Exercisable - Weighted-Average Exercise Price (in dollars per share) | $ 3.16

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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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