XML 60 R49.htm IDEA: XBRL DOCUMENT v3.3.1.900

Fair Value - Summary Showing the Recurring Fair Value Measurements of the Contingent Consideration Liability (Detail) - USD ($) $ in Thousands	6 Months Ended
	Nov. 30, 2015	May. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
November 30, 2014	$ 37,849	$ 47,384
Contingent Consideration Earn Out Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value financial liabilities	37,849
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value financial liabilities	37,946	47,641
Recurring [Member] | Contingent Consideration Earn Out Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value financial liabilities		47,384
Level 3 [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value financial liabilities	37,849	47,384
Level 3 [Member] | Recurring [Member] | Contingent Consideration Earn Out Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value financial liabilities	37,849	$ 47,384
Level 3 [Member] | Revenue Based Payments [Member] | Recurring [Member] | Contingent Consideration Earn Out Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
November 30, 2014	$ 35,249
Level 3 [Member] | Revenue Based Payments [Member] | Minimum [Member] | Recurring [Member] | Contingent Consideration Earn Out Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	4.00%
Probability of payment	75.00%
Projected fiscal year of payment	2015
Level 3 [Member] | Revenue Based Payments [Member] | Maximum [Member] | Recurring [Member] | Contingent Consideration Earn Out Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	10.00%
Probability of payment	100.00%
Projected fiscal year of payment	2022
Level 3 [Member] | Milestone Based Payments [Member] | Recurring [Member] | Contingent Consideration Earn Out Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
November 30, 2014	$ 2,600
Level 3 [Member] | Milestone Based Payments [Member] | Minimum [Member] | Recurring [Member] | Contingent Consideration Earn Out Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	16.00%
Probability of payment	75.00%
Projected fiscal year of payment	2015
Level 3 [Member] | Milestone Based Payments [Member] | Maximum [Member] | Recurring [Member] | Contingent Consideration Earn Out Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	20.00%
Probability of payment	100.00%
Projected fiscal year of payment	2017

X

- Definition

Fair value inputs probability of payment.

+ References

No definition available.

+ Details

Name:	ango_FairValueInputsProbabilityOfPayment
Namespace Prefix:	ango_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fair value inputs projected fiscal year of payment.

+ References

No definition available.

+ Details

Name:	ango_FairValueInputsProjectedFiscalYearOfPayment
Namespace Prefix:	ango_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Interest rate used to find the present value of contingent consideration liabilities with unobservable inputs to estimate fair value.

+ References

No definition available.

+ Details

Name:	ango_FairValueUnobservableInputDiscountRate
Namespace Prefix:	ango_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- 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

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

X

- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

+ Details

Name:	us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_FairValueByLiabilityClassAxis=ango_ContingentConsiderationEarnOutLiabilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_EligibleItemOrGroupForFairValueOptionAxis=ango_RangeOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_EligibleItemOrGroupForFairValueOptionAxis=ango_RangeTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: