Represents the number of anniversaries of grant date on which share-based compensation awards vest.

No definition available.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ 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

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)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ 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 (a)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ 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 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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Balance Type:	na
Period Type:	instant

- Definition

Percentage of vesting of share-based compensation awards.

+ References

+ Details

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- Definition

Period from grant date that an equity-based award expires, 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 (a)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

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Balance Type:	na
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

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Stock-Based Compensation - 2006 Plan (Details)	12 Months Ended
Stock-Based Compensation - 2006 Plan (Details)	Jul. 31, 2016 item shares	Jul. 31, 2015 shares	Jul. 31, 2014 shares	Jul. 31, 2013 shares
Stock options
Stock award plan
Outstanding options (in shares)	122,500	107,500	222,492	403,831
Restricted shares
Stock award plan
Outstanding unvested restricted stock shares	331,367	343,519	525,842	605,767
2006 Plan
Stock award plan
Maximum number of shares authorized for issuance	5,591,000
2006 Plan \| Stock options and stock appreciation rights
Stock award plan
Maximum number of shares authorized for issuance	2,700,000
2006 Plan \| Restricted stock and other stock awards
Stock award plan
Maximum number of shares authorized for issuance	2,891,000
2006 Plan \| Stock options
Stock award plan
Number of anniversaries of grant date on which awards vest \| item	3
Expiration term	5 years
Outstanding options (in shares)	122,500
2006 Plan \| Stock options \| First anniversary vesting
Stock award plan
Vesting percentage	33.33%
Vesting period	1 year
2006 Plan \| Stock options \| Second anniversary vesting
Stock award plan
Vesting percentage	33.33%
Vesting period	2 years
2006 Plan \| Stock options \| Third anniversary vesting
Stock award plan
Vesting percentage	33.33%
Vesting period	3 years
2006 Plan \| Restricted shares
Stock award plan
Number of anniversaries of grant date on which awards vest \| item	3
Outstanding unvested restricted stock shares	317,932
2006 Plan \| Restricted shares \| First anniversary vesting
Stock award plan
Vesting percentage	33.33%
Vesting period	1 year
2006 Plan \| Restricted shares \| Second anniversary vesting
Stock award plan
Vesting percentage	33.33%
Vesting period	2 years
2006 Plan \| Restricted shares \| Third anniversary vesting
Stock award plan
Vesting percentage	33.33%
Vesting period	3 years