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Intangible assets additions including goodwill.

+ References

No definition available.

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

No definition available.

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

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-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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

-Publisher FASB

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-SubTopic 20

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- Definition

Amount of increase in assets, excluding financial assets and goodwill, lacking physical substance with an indefinite life, resulting from a business combination.

+ References

No definition available.

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- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

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- Definition

Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance.

+ References

No definition available.

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Goodwill and Intangibles - Changes in Carrying Amount of Goodwill and Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013
Goodwill [Roll Forward]
Balance as of June 1, 2014 (net of amortization)			$ 3,109us-gaap_Goodwill
Additions			0us-gaap_GoodwillAcquiredDuringPeriod
Balance as of November 30, 2014	3,109us-gaap_Goodwill		3,109us-gaap_Goodwill
Customer Relationships [Roll Forward]
Amortization	(29)us-gaap_AmortizationOfIntangibleAssets	(41)us-gaap_AmortizationOfIntangibleAssets	(70)us-gaap_AmortizationOfIntangibleAssets	(82)us-gaap_AmortizationOfIntangibleAssets
Balance as of November 30, 2014	392us-gaap_FiniteLivedIntangibleAssetsNet		392us-gaap_FiniteLivedIntangibleAssetsNet
Goodwill and Other Intangible Assets [Roll Forward]
Balance as of June 1, 2014 (net of amortization)			3,982
Additions			0
Amortization	(29)us-gaap_AmortizationOfIntangibleAssets	(41)us-gaap_AmortizationOfIntangibleAssets	(70)us-gaap_AmortizationOfIntangibleAssets	(82)us-gaap_AmortizationOfIntangibleAssets
Balance as of November 30, 2014	3,912		3,912
Customer relationships
Customer Relationships [Roll Forward]
Balance as of June 1, 2014 (net of amortization)			462
Additions			0
Amortization			(70)
Balance as of November 30, 2014	392		392
Goodwill and Other Intangible Assets [Roll Forward]
Amortization			(70)
Trade name
Trade Name [Roll Forward]
Balance as of June 1, 2014 (net of amortization)			411
Additions			0
Balance as of November 30, 2014	$ 411		$ 411