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Network
100650 - Disclosure - Income Taxes - Schedule of Income (Loss) Before Income Taxes (Detail)
(http://www.amsc.com/20160331/taxonomy/role/DisclosureIncomeTaxesScheduleOfIncomeLossBeforeIncomeTaxesDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000880807 (http://www.sec.gov/CIK)
Income Tax Disclosure [Abstract]Period [Axis]
2015-04-01 - 2016-03-31
2014-04-01 - 2015-03-31
2013-04-01 - 2014-03-31
Income Tax Disclosure [Abstract]
 
 
 
U.S.
(29,436,000) 
(40,277,000) 
(91,558,000) 
Foreign
8,688,000  
(8,563,000) 
36,152,000  
Loss before income tax expense
(20,748,000) 
 
(48,840,000) 
 
(55,406,000)