Rendering

Component: (Network and Table)
Network
40701 - Disclosure - Property, Plant And Equipment (Schedule Of Cost And Accumulated Depreciation Of Property And Equipment) (Details)
(http://www.amsc.com/role/DisclosurePropertyPlantAndEquipmentScheduleOfCostAndAccumulatedDepreciationOfPropertyAndEquipmentDetails)
TableSchedule of Property, Plant and Equipment [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000880807 (http://www.sec.gov/CIK)
Property, Plant and Equipment [Line Items]Period [Axis]
2011-04-01 - 2012-03-31
2010-04-01 - 2011-03-31
2009-04-01 - 2010-03-31
Property, Plant and Equipment by Type [Axis]Property, Plant and Equipment by Type [Axis]Property, Plant and Equipment by Type [Axis]
Land [Member]Construction In Progress [Member]Building [Member]Equipment And Software [Member]Furniture And Fixtures [Member]Leasehold Improvements [Member]Property Plant And Equipment Type [Domain]Land [Member]Construction In Progress [Member]Building [Member]Equipment And Software [Member]Furniture And Fixtures [Member]Leasehold Improvements [Member]Property Plant And Equipment Type [Domain]Property Plant And Equipment Type [Domain]
Property, plant and equipment, gross
4,022,000  
25,331,000  
36,808,000  
62,785,000  
1,788,000  
6,125,000  
136,859,000  
4,022,000  
25,968,000  
36,852,000  
57,151,000  
1,807,000  
5,024,000  
130,824,000  
 
Less accumulated depreciation
 
 
 
 
 
 
(46,031,000) 
 
 
 
 
 
 
(34,330,000) 
 
Property, plant and equipment, net
 
 
 
 
 
 
 
 
 
 
 
 
90,828,000  
 
 
 
 
 
 
 
 
 
 
 
 
 
96,494,000  
 
 
 
Depreciation and amortization expense
 
 
 
 
 
 
12,900,000  
 
 
 
 
 
 
8,400,000  
7,100,000