XML 18 R54.htm IDEA: XBRL DOCUMENT v2.4.1.9
Property, Plant, and Equipment, at Cost (Details) (USD $)
12 Months Ended
May 31, 2014
May 31, 2013
May 31, 2012
Property, plant and equipment      
Property, plant and equipment $ 103,406,000us-gaap_PropertyPlantAndEquipmentGross $ 90,783,000us-gaap_PropertyPlantAndEquipmentGross  
Less accumulated depreciation and amortization (37,845,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (29,421,000)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment  
Property, plant and equipment excluding land and land improvements 65,561,000ango_PropertyPlantAndEquipmentExcludingLandAndLandImprovements 61,362,000ango_PropertyPlantAndEquipmentExcludingLandAndLandImprovements  
Land and land improvements 1,029,000us-gaap_LandAndLandImprovements 1,029,000us-gaap_LandAndLandImprovements  
Property, plant and equipment, Net 66,590,000us-gaap_PropertyPlantAndEquipmentNet 62,391,000us-gaap_PropertyPlantAndEquipmentNet 55,610,000us-gaap_PropertyPlantAndEquipmentNet
Depreciation expense 8,400,000us-gaap_Depreciation 8,700,000us-gaap_Depreciation 3,600,000us-gaap_Depreciation
Trade shows 62,000ango_TradeShows 487,000ango_TradeShows  
Building and building improvements [Member]      
Property, plant and equipment      
Property, plant and equipment 33,126,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingAndBuildingImprovementsMember
30,150,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_BuildingAndBuildingImprovementsMember
 
Estimated useful lives 39 years    
Machinery and equipment [Member]      
Property, plant and equipment      
Property, plant and equipment 31,880,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
30,870,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_MachineryAndEquipmentMember
 
Machinery and equipment [Member] | Minimum [Member]      
Property, plant and equipment      
Estimated useful lives 3 years    
Machinery and equipment [Member] | Maximum [Member]      
Property, plant and equipment      
Estimated useful lives 8 years    
Computer software and equipment [Member]      
Property, plant and equipment      
Property, plant and equipment 25,836,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerEquipmentMember
16,390,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ComputerEquipmentMember
 
Computer software and equipment [Member] | Minimum [Member]      
Property, plant and equipment      
Estimated useful lives 3 years    
Computer software and equipment [Member] | Maximum [Member]      
Property, plant and equipment      
Estimated useful lives 10 years    
Construction in progress [Member]      
Property, plant and equipment      
Property, plant and equipment $ 12,564,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember
$ 13,373,000us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember