Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 07-4

-Paragraph 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Diluted Earnings Per Share

-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Contingent Stock Agreement

-URI http://asc.fasb.org/extlink&oid=6508534

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Antidilution

-URI http://asc.fasb.org/extlink&oid=6505113

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 128

-Paragraph 171

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Statement of Financial Accounting Standard (FAS)

-Number 128

-Paragraph 40

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 128

-Paragraph 13, 14

-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

- Definition

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References+ Details

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

Description Of Business And Significant Accounting Policies (Narrative)(Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	Aug. 31, 2010
Description Of Business And Significant Accounting Policies [Line Items]
Weighted average shares outstanding assuming dilution	12,810,000	12,692,000	12,585,000
Carrying amount, long-term debt (including current portion)	$ 4.3	$ 8.6
Long-term portion	$ 4.3	$ 8.5
Percentage to be recognized	50.00%
Leased Barrier Transfer Machines [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	8 years
Leased Barriers [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	12 years
Temporary Structures [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	5 years
Other Capitalized Property Plant and Equipment [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	2 years
Maximum [Member] \| Leased Barrier Transfer Machines [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	10 years
Maximum [Member] \| Building [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	30 years
Maximum [Member] \| Equipment [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	10 years
Maximum [Member] \| Other Capitalized Property Plant and Equipment [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	20 years
Minimum [Member] \| Building [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	15 years
Minimum [Member] \| Equipment [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	3 years
Minimum [Member] \| Other Capitalized Property Plant and Equipment [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Useful life	2 years
Performance Stock Units [Member]
Description Of Business And Significant Accounting Policies [Line Items]
Weighted average shares outstanding assuming dilution	37,746		13,395
Anti-dilutive securities excluded from the computation of earnings per share	43,388	98,625	70,693