Amount of potential further loan syndication under the credit facility

No definition available.

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- Definition

Commercial letters of credit outstanding amount

+ References

No definition available.

+ Details

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- Definition

Interest expense related to the credit facility for the period, including undrawn line fees and amortization of deferred financing costs.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Floor interest rate on debt instrument

+ References

No definition available.

+ Details

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 16
-Article 9

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 20, 22
-Article 5

+ Details

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- Definition

Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ 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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- Details

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- Details

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Secured Credit Facility (Details) - USD ($)		3 Months Ended		9 Months Ended
Secured Credit Facility (Details) - USD ($)	Feb. 23, 2016	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015	Jul. 31, 2015
Line of Credit Facility [Line Items]
Current portion of long-term debt		$ 14,062,000		$ 14,062,000		$ 0
Non-current portion of long-term debt, net		328,486,000		328,486,000		$ 0
Secured Credit Facility
Line of Credit Facility [Line Items]
Long-term Debt		342,548,000		342,548,000
Current portion of long-term debt		14,062,000		14,062,000
Non-current portion of long-term debt, net		328,486,000		328,486,000
Line of Credit Facility, maximum borrowing capacity	$ 400,000,000
Interest expense related to Credit Facility		$ 2,981,000		$ 2,981,000
Weighted interest rate (percent)		5.00%		5.00%
Outstanding standby letters of credit at period end		$ 2,352,000		$ 2,352,000
Outstanding commercial letters of credit at period end		0		0
Amount of potential further loan syndication	15,000,000
Committed Secured Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of Credit Facility, maximum borrowing capacity			$ 100,000,000		$ 100,000,000
Interest expense related to Credit Facility			$ 0		$ 198,000
Term Loan Facility [Member] \| Secured Credit Facility
Line of Credit Facility [Line Items]
Long-term Debt, Gross		246,875,000		246,875,000
Unamortized deferred financing costs		6,231,000		6,231,000
Long-term Debt		240,644,000		240,644,000
Line of Credit Facility, maximum borrowing capacity	250,000,000
Revolving Loan Facility [Member] \| Secured Credit Facility
Line of Credit Facility [Line Items]
Long-term Debt		$ 101,904,000		$ 101,904,000
Line of Credit Facility, maximum borrowing capacity	150,000,000
Revolving Loan Facility [Member] \| Letter of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, maximum borrowing capacity	$ 25,000,000
Federal Funds Rate [Member] \| Revolving Loan Facility [Member] \| Secured Credit Facility
Line of Credit Facility [Line Items]
Variable interest rate (percent)				0.50%
Adjusted LIBO rate \| Revolving Loan Facility [Member] \| Secured Credit Facility
Line of Credit Facility [Line Items]
Variable interest rate (percent)				1.00%
Floor interest rate				1.00%