Represents the estimated fair value of equity-based awards on the grant date.

No definition available.

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- Definition

Represents the estimated fair value of nonvested equity-based awards at the end of the reporting period.

+ References

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that are scheduled to vest in the future.

+ References

No definition available.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were vested as of the reporting date.

+ References

No definition available.

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- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments or cash in accordance with the terms of the arrangement.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ 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 (h)(1)(i)

-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 A240

-Subparagraph g(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph 64

-Subparagraph b

-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 6: http://www.xbrl.org/2003/role/presentationRef

-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=6793087&loc=d3e301413-122809

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

+ References

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

+ References

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

+ Details

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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EQUITY-BASED INCENTIVE AWARDS: (Details 2) (USD $)	12 Months Ended		1 Months Ended				1 Months Ended			1 Months Ended
EQUITY-BASED INCENTIVE AWARDS: (Details 2) (USD $)	Sep. 30, 2012 Restricted Stock Units	Sep. 30, 2011 Restricted Stock Units	Nov. 30, 2010 Restricted Stock Units 1	Oct. 26, 2012 Restricted Stock Units 1	Sep. 30, 2012 Restricted Stock Units 1	Nov. 22, 2010 Restricted Stock Units 1	Nov. 30, 2010 Restricted Stock Units 2	Sep. 30, 2012 Restricted Stock Units 2	Nov. 22, 2010 Restricted Stock Units 2	Oct. 31, 2011 Restricted Stock Units 3	Sep. 30, 2012 Restricted Stock Units 3	Oct. 26, 2011 Restricted Stock Units 3
Restricted stock units
Service period			24 months				36 months			36 months
Estimated fair value of award at grant date						$ 2,765,000			$ 864,000			$ 855,000
Award outstanding at the end of the period (in shares)	36,700	37,600			12,800			8,000			15,900
Fair value of nonvested awards at the end of the period					832,000			520,000			1,034,000
Units scheduled to vest				12,800
Compensation expense related to the amortization of restricted stock unit awards	1,400,000	1,800,000
Tax benefit related to compensation expense	500,000	700,000
Total intrinsic value of equity-based compensation awards vested	1,000,000	900,000
Total unamortized compensation expense	$ 1,100,000
Number of Shares
Nonvested restricted stock units at the beginning of the period (in shares)	37,600				12,800			8,000			15,900
Granted (in shares)	15,900		38,400				12,000			15,900
Vested (in shares)	(16,800)
Vested as of the balance sheet date (in shares)					25,600			4,000
Nonvested restricted stock units at the end of the period (in shares)	36,700	37,600			12,800			8,000			15,900
Weighted Average Fair Value
Nonvested restricted stock units at the beginning of the period (in dollars per share)	$ 57.00
Granted (in dollars per share)	$ 53.80
Vested (in dollars per share)	$ 56.58
Nonvested restricted stock units at the end of the period (in dollars per share)	$ 65.00	$ 57.00