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Network
100760 - Disclosure - Stockholders' Equity - Summary of the Employee and Non-Employee Restricted Stock Activity (Detail)
(http://www.amsc.com/20160331/taxonomy/role/DisclosureStockholdersEquitySummaryOfEmployeeAndNonEmployeeRestrictedStockActivityDetail)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000880807 (http://www.sec.gov/CIK)
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]Period [Axis]
2015-04-01 - 2016-03-31
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
 
Shares, Outstanding
340,588  
Shares, Granted
420,189  
Shares, Vested
(262,984) 
Shares, Forfeited
(14,949) 
Shares, Outstanding
482,844  
 
Weighted Average Grant Date Fair Value, Outstanding
20.82  
Weighted Average Grant Date Fair Value, Granted
6.24  
Weighted Average Grant Date Fair Value, Vested
14.56  
Weighted Average Grant Date Fair Value, Forfeited
76.22  
Weighted Average Grant Date Fair Value, Outstanding
9.62  
Intrinsic Aggregate Value, Outstanding at March 31, 2016
3,670,000