XML 48 R43.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Basis of Presentation, Business Description and Summary of Significant Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
May 31, 2014 | May 31, 2013
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Contingent consideration liability at fair value | $ 67,421 | $ 75,049
Summary showing the recurring fair value measurements of the contingent consideration liability |  |
Discount rate used in fair value calculation | 12.00% |
Level 3 [Member] | Contingent Consideration Earn Out Liability [Member] | Recurring [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Contingent consideration liability at fair value | 67,421 |
Revenue Based Payment [Member] | Level 3 [Member] | Contingent Consideration Earn Out Liability [Member] | Recurring [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Contingent consideration liability at fair value | 64,051 |
Revenue Based Payment [Member] | Level 3 [Member] | Maximum [Member] | Contingent Consideration Earn Out Liability [Member] | Recurring [Member] |  |
Summary showing the recurring fair value measurements of the contingent consideration liability |  |
Discount rate used in fair value calculation | 10.00% |
Probability of payment | 100.00% |
Projected fiscal year of payment | 2022 |
Revenue Based Payment [Member] | Level 3 [Member] | Minimum [Member] | Contingent Consideration Earn Out Liability [Member] | Recurring [Member] |  |
Summary showing the recurring fair value measurements of the contingent consideration liability |  |
Discount rate used in fair value calculation | 4.00% |
Probability of payment | 75.00% |
Projected fiscal year of payment | 2015 |
Milestone Based Payments [Member] | Level 3 [Member] | Contingent Consideration Earn Out Liability [Member] | Recurring [Member] |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Contingent consideration liability at fair value | $ 3,370 |
Summary showing the recurring fair value measurements of the contingent consideration liability |  |
Discount rate used in fair value calculation | 16.00% |
Projected fiscal year of payment | 2015 |
Milestone Based Payments [Member] | Level 3 [Member] | Maximum [Member] | Contingent Consideration Earn Out Liability [Member] | Recurring [Member] |  |
Summary showing the recurring fair value measurements of the contingent consideration liability |  |
Probability of payment | 100.00% |
Milestone Based Payments [Member] | Level 3 [Member] | Minimum [Member] | Contingent Consideration Earn Out Liability [Member] | Recurring [Member] |  |
Summary showing the recurring fair value measurements of the contingent consideration liability |  |
Probability of payment | 75.00% |

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
- Details
Name: | ango_FairValueLiabilitiesMeasuredOnRecurringBasisAbstract
Namespace Prefix: | ango_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + 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 (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueInputsDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
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