Debt instrument increase in interest rate in case of default.

No definition available.

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- Definition

Debt service coverage ratio.

+ References

No definition available.

+ Details

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- Definition

Percentage of quarterly repayment of term facility year five.

+ References

No definition available.

+ Details

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- Definition

Percentage of quarterly repayment of term facility year four.

+ References

No definition available.

+ Details

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- Definition

Percentage of quarterly repayment of term facility year one.

+ References

No definition available.

+ Details

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- Definition

Percentage of quarterly repayment of term facility year three.

+ References

No definition available.

+ Details

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- Definition

Percentage of quarterly repayment of term facility year two.

+ References

No definition available.

+ Details

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- Definition

Ratio of Indebtedness to Consolidated EBITDA

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Initial amount borrowed under Revolving facility.

+ References

No definition available.

+ Details

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

- Definition

Total initial amount borrowed under secured long term debt facility.

+ References

No definition available.

+ Details

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

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

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

- Definition

Maximum contractual interest rate for funds borrowed, under the debt agreement.

+ 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(a)(1))
-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 22
-Article 5

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum contractual interest rate for funds borrowed, under the debt agreement.

+ 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(a)(2))
-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 22
-Article 5

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

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

+ 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 22
-Article 5

+ Details

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

- 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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- Details

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- Details

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- Details

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- Details

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Long Term Debt - Additional Information (Detail) $ in Thousands	Sep. 19, 2013 USD ($)	Nov. 30, 2015 USD ($)	May. 31, 2015 USD ($)
Debt Instrument [Line Items]
Notional amount of interest rate swap agreement	$ 100,000
Fixed interest rate payments	0.74%
Long-term debt, net of current portion		$ 122,660	$ 128,910
Ratio for debt service coverage	1.35
Ratio of indebtedness to consolidated EBITDA	3.75
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term debt, net of current portion	$ 46,400
New Credit Agreement [Member]
Debt Instrument [Line Items]
Percentage of increase in interest	2.00%
New Credit Agreement [Member] \| Base Rate [Member] \| JP Morgan Chase [Member]
Debt Instrument [Line Items]
Percentage of increases leverage ratio base rate, minimum	0.50%
Percentage of increases leverage ratio base rate, maximum	1.25%
New Credit Agreement [Member] \| Eurodollar [Member] \| JP Morgan Chase [Member]
Debt Instrument [Line Items]
Percentage of increases leverage ratio base rate, minimum	1.50%
Percentage of increases leverage ratio base rate, maximum	2.25%
New Credit Agreement [Member] \| Term Loan Facility [Member]
Debt Instrument [Line Items]
Senior secured term loan facility	$ 100,000
Term loan quarterly repayment, year one	5.00%
Term loan quarterly repayment, year two	5.00%
Term loan quarterly repayment, year three	10.00%
Term loan quarterly repayment, year four	15.00%
Term loan quarterly repayment, year five	65.00%
New Credit Agreement [Member] \| Senior Secured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Senior secured term loan facility	$ 100,000
New Credit Agreement [Member] \| Senior Secured Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Commitment fee percentage	0.20%
New Credit Agreement [Member] \| Senior Secured Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Commitment fee percentage	0.35%
New Credit Agreement [Member] \| Letters of Credit [Member]
Debt Instrument [Line Items]
Senior secured term loan facility	$ 20,000
New Credit Agreement [Member] \| Swingline Loans [Member]
Debt Instrument [Line Items]
Senior secured term loan facility	5,000
New Credit Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Initial amount borrowed under revolving facility	41,400
Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, net of current portion	$ 87,500