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Fair Value - Additional Information (Detail) $ in Millions	Nov. 30, 2015 USD ($)
Fair Value Disclosures [Abstract]
Potential amount of undiscounted future contingent consideration	$ 43.5

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- Definition

Undiscounted Contingent Consideration Disclosure

+ References

No definition available.

+ Details

Name:	ango_UndiscountedContingentConsiderationDisclosure
Namespace Prefix:	ango_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_FairValueDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration