$AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/ Stock $amsc

$amsc Overview Financials Valuation SEC Filings Company Website

2014 Q1 Form 10-K Financial Statement

#000156459014002420 Filed on June 05, 2014

Income Statement

Concept	2014 Q1	2014	2013 Q1
Revenue	$16.29M	$3.700M	$20.42M
YoY Change	-20.24%	8.82%	-28.68%
Cost Of Revenue	$16.40M	$72.86M	$18.09M
YoY Change	-9.34%	1.28%	-27.84%
Gross Profit	-$110.0K	$11.26M	$2.330M
YoY Change	-104.72%	-116.43%	-34.55%
Gross Profit Margin	-0.68%	304.3%	11.41%
Selling, General & Admin	$9.490M	$37.23M	$13.35M
YoY Change	-28.91%	-25.09%	-22.25%
% of Gross Profit		330.67%	572.96%
Research & Development	$3.110M	$12.17M	$3.850M
YoY Change	-19.22%	-20.44%	-35.08%
% of Gross Profit		108.12%	165.24%
Depreciation & Amortization	$2.570M	$10.62M	$2.910M
YoY Change	-11.68%	-18.68%	-36.46%
% of Gross Profit		94.28%	124.89%
Operating Expenses	$12.64M	$49.40M	$17.28M
YoY Change	-26.85%	-24.46%	-25.45%
Operating Profit	-$14.88M	-$41.43M	-$14.95M
YoY Change	-0.49%	-28.25%	-23.8%
Interest Expense	-$2.430M	$9.700M	-$3.320M
YoY Change	-26.81%	-34.9%	482.46%
% of Operating Profit
Other Income/Expense, Net	-$80.00K	-$991.0K	-$10.00K
YoY Change	700.0%	-21.47%
Pretax Income	-$22.59M	-$55.41M	-$19.35M
YoY Change	16.74%	-17.27%	-7.77%
Income Tax	$120.0K	$852.0K	$420.0K
% Of Pretax Income
Net Earnings	-$22.71M	-$56.26M	-$19.77M
YoY Change	14.85%	-14.89%	-6.61%
Net Earnings / Revenue	-139.41%	-1520.49%	-96.82%
Basic Earnings Per Share	-$3.30	-$8.98
Diluted Earnings Per Share	-$3.30	-$8.98	-$3.505M
COMMON SHARES
Basic Shares Outstanding		6.262M
Diluted Shares Outstanding		6.262M

Balance Sheet

Concept	2014 Q1	2014	2013 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$43.10M	$43.10M	$39.20M
YoY Change	9.95%	9.95%	-24.03%
Cash & Equivalents	$43.11M	$43.10M	$39.24M
Short-Term Investments			$0.00
Other Short-Term Assets	$11.90M	$11.90M	$28.60M
YoY Change	-58.39%	-58.39%	-18.98%
Inventory	$20.69M	$20.70M	$33.47M
Prepaid Expenses
Receivables	$7.556M	$7.600M	$18.86M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$83.28M	$83.30M	$120.2M
YoY Change	-30.71%	-30.7%	-16.31%
LONG-TERM ASSETS
Property, Plant & Equipment	$64.57M	$64.60M	$74.63M
YoY Change	-13.47%	-13.4%	-17.81%
Goodwill
YoY Change
Intangibles	$1.995M		$2.749M
YoY Change	-27.43%
Long-Term Investments
YoY Change
Other Assets	$7.541M	$18.70M	$9.020M
YoY Change	-16.4%	-2.6%	-46.63%
Total Long-Term Assets	$85.23M	$85.20M	$96.57M
YoY Change	-11.74%	-11.8%	-13.39%
TOTAL ASSETS
Total Short-Term Assets	$83.28M	$83.30M	$120.2M
Total Long-Term Assets	$85.23M	$85.20M	$96.57M
Total Assets	$168.5M	$168.5M	$216.8M
YoY Change	-22.26%	-22.28%	-15.03%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.749M	$1.700M	$7.146M
YoY Change	-75.52%	-76.06%	-12.85%
Accrued Expenses	$19.40M	$19.40M
YoY Change		81.31%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$6.200M	$6.200M	$8.800M
YoY Change	-29.55%	-29.55%
Total Short-Term Liabilities	$47.82M	$47.80M	$79.76M
YoY Change	-40.04%	-40.1%	-7.58%
LONG-TERM LIABILITIES
Long-Term Debt	$6.400M	$6.400M	$9.200M
YoY Change	-30.43%	-30.43%
Other Long-Term Liabilities	$1.058M	$2.000M	$1.291M
YoY Change	-18.05%	-23.08%	-65.11%
Total Long-Term Liabilities	$1.058M	$8.400M	$1.291M
YoY Change	-18.05%	-28.81%	-65.11%
TOTAL LIABILITIES
Total Short-Term Liabilities	$47.82M	$47.80M	$79.76M
Total Long-Term Liabilities	$1.058M	$8.400M	$1.291M
Total Liabilities	$56.25M	$56.30M	$91.64M
YoY Change	-38.62%	-38.54%	1.59%
SHAREHOLDERS EQUITY
Retained Earnings	-$856.4M		-$800.1M
YoY Change	7.03%
Common Stock	$967.2M		$603.0K
YoY Change	160294.53%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$370.0K		$313.0K
YoY Change	18.21%
Treasury Stock Shares	$57.05K
Shareholders Equity	$112.3M	$112.3M	$125.1M
YoY Change
Total Liabilities & Shareholders Equity	$168.5M	$168.5M	$216.8M
YoY Change	-22.26%	-22.28%	-15.03%

Cashflow Statement

Concept	2014 Q1	2014	2013 Q1
OPERATING ACTIVITIES
Net Income	-$22.71M	-$56.26M	-$19.77M
YoY Change	14.85%	-14.89%	-6.61%
Depreciation, Depletion And Amortization	$2.570M	$10.62M	$2.910M
YoY Change	-11.68%	-18.68%	-36.46%
Cash From Operating Activities	$5.100M	-$13.27M	-$4.580M
YoY Change	-211.35%	-70.69%	-41.06%
INVESTING ACTIVITIES
Capital Expenditures	-$60.00K	$278.0K	-$170.0K
YoY Change	-64.71%	-80.56%	-91.01%
Acquisitions
YoY Change
Other Investing Activities	-$330.0K	$436.0K	$2.830M
YoY Change	-111.66%	42.02%	-191.59%
Cash From Investing Activities	-$390.0K	$4.009M	$2.660M
YoY Change	-114.66%	-45.48%	-153.41%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net		$4.615M
YoY Change		139.99%
Cash From Financing Activities	3.050M	52.80M	-1.040M
YoY Change	-393.27%	0.0%	-677.78%
NET CHANGE
Cash From Operating Activities	5.100M	-13.27M	-4.580M
Cash From Investing Activities	-390.0K	4.009M	2.660M
Cash From Financing Activities	3.050M	52.80M	-1.040M
Net Change In Cash	7.760M	43.54M	-2.960M
YoY Change	-362.16%	192.58%	-76.45%
FREE CASH FLOW
Cash From Operating Activities	$5.100M	-$13.27M	-$4.580M
Capital Expenditures	-$60.00K	$278.0K	-$170.0K
Free Cash Flow	$5.160M	-$13.55M	-$4.410M
YoY Change	-217.01%	-71.0%	-25.0%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value
CY2014	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2014	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2014	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2014Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	79419295
CY2013Q3	dei	Entity Public Float EntityPublicFloat	116400000
CY2014Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	43114000
CY2014Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	7556000
CY2014Q1	us-gaap	Inventory Net InventoryNet	20694000
CY2014Q1	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	9004000
CY2014Q1	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	2913000
CY2014Q1	us-gaap	Assets Current AssetsCurrent	83281000
CY2014Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	64574000
CY2014Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1995000
CY2014Q1	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	3394000
CY2014Q1	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	7724000
CY2013Q1	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	5354000
CY2014Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	7541000
CY2014Q1	us-gaap	Assets Assets	168509000
CY2014Q1	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	21764000
CY2014Q1	us-gaap	Notes Payable Current NotesPayableCurrent	6240000
CY2013Q1	us-gaap	Convertible Notes Payable Current ConvertibleNotesPayableCurrent	4610000
CY2014	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	502000
CY2012	us-gaap	Operating Expenses OperatingExpenses	212982000
CY2013Q1	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	5444000
CY2014Q1	us-gaap	Stockholders Equity StockholdersEquity	112259000
CY2014Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2014Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000
CY2013Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	150000000
CY2014Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	78929903
CY2013Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	60300466
CY2014Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	78929903
CY2013Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	60300466
CY2014Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	57046
CY2014	us-gaap	Sales Revenue Net SalesRevenueNet	84117000
CY2013	us-gaap	Sales Revenue Net SalesRevenueNet	87419000
CY2012	us-gaap	Sales Revenue Net SalesRevenueNet	76543000
CY2014	us-gaap	Cost Of Revenue CostOfRevenue	72858000
CY2013	us-gaap	Cost Of Revenue CostOfRevenue	71937000
CY2012	us-gaap	Cost Of Revenue CostOfRevenue	82882000
CY2012	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	27271000
CY2012	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	72118000
CY2012	amsc	Advance Payment Write Off AdvancePaymentWriteOff	20551000
CY2012	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	972000
CY2013	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	539000
CY2013	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	16739000
CY2013	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	42000
CY2014	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	168000
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-55406000
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	62622000
CY2014	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	727000
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-28000
CY2014	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-55531000
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-67046000
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-138617000
CY2011Q1	us-gaap	Stockholders Equity StockholdersEquity	292855000
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	24000
CY2012	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	304000
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9864000
CY2012	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	720000
CY2012	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	271000
CY2012Q1	us-gaap	Stockholders Equity StockholdersEquity	164879000
CY2013	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2000
CY2013	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	290000
CY2013	us-gaap	Stock Issued During Period Value Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures	1619000
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8138000
CY2014	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-12512000
CY2014	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	10696000
CY2014	us-gaap	Stock Issued During Period Value Employee Benefit Plan StockIssuedDuringPeriodValueEmployeeBenefitPlan	425000
CY2014	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	7458000
CY2014	us-gaap	Stock Issued During Period Value Other StockIssuedDuringPeriodValueOther	23480000
CY2014	us-gaap	Stock Issued During Period Value Treasury Stock Reissued StockIssuedDuringPeriodValueTreasuryStockReissued	57000
CY2014	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	10615000
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	13054000
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	15455000
CY2014	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	10696000
CY2013	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	8138000
CY2012	us-gaap	Employee Benefits And Share Based Compensation EmployeeBenefitsAndShareBasedCompensation	9864000
CY2012	amsc	Advanced Payment Write Off AdvancedPaymentWriteOff	20551000
CY2012	amsc	Patents Write Off PatentsWriteOff	4917000
CY2014	us-gaap	Restructuring Costs RestructuringCosts	167000
CY2013	us-gaap	Restructuring Costs RestructuringCosts	902000
CY2012	us-gaap	Restructuring Costs RestructuringCosts	2798000
CY2014	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1265000
CY2013	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	4984000
CY2012	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	1715000
CY2014	us-gaap	Inventory Write Down InventoryWriteDown	316000
CY2013	us-gaap	Inventory Write Down InventoryWriteDown	2230000
CY2012	us-gaap	Inventory Write Down InventoryWriteDown	4357000
CY2013	amsc	Losses Recoveries On Purchase Commitments Net LossesRecoveriesOnPurchaseCommitmentsNet	7768000
CY2012	amsc	Losses Recoveries On Purchase Commitments Net LossesRecoveriesOnPurchaseCommitmentsNet	1299000
CY2014	amsc	Prepaid Value Added Tax Reserve PrepaidValueAddedTaxReserve	1426000
CY2014	us-gaap	Gain Loss On Investments GainLossOnInvestments	-1008000
CY2013	us-gaap	Gain Loss On Investments GainLossOnInvestments	-2231000
CY2012	us-gaap	Gain Loss On Investments GainLossOnInvestments	-2407000
CY2014	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	7713000
CY2013	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	12426000
CY2014	us-gaap	Other Noncash Expense OtherNoncashExpense	1813000
CY2013	us-gaap	Other Noncash Expense OtherNoncashExpense	2427000
CY2012	us-gaap	Other Noncash Expense OtherNoncashExpense	771000
CY2014	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-11379000
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	751000
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4820000
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-13043000
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	6457000
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	7528000
CY2013	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-8887000
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1685000
CY2014	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-10861000
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-21864000
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-64148000
CY2014	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-21426000
CY2013	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	9977000
CY2012	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	9060000
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-13267000
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-45271000
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-141042000
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	278000
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1430000
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	10895000
CY2014	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	54000
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	136000
CY2013	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	291000
CY2012	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	328000
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	12796000
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	31221000
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	57000
CY2014	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	333000
CY2013	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-339000
CY2012	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	144000
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	3871000
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-7036000
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-77504000
CY2012Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	46279000
CY2011Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	123783000
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	864000
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-311000
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	13357000
CY2013	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	5276000
CY2012	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	110117000
CY2014	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-4669000
CY2013	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-3678000
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	9093000
CY2012	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	4227000
CY2012	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	1800000
CY2012	amsc	Advanced Payment For Planned Acquisition AdvancedPaymentForPlannedAcquisition	20551000
CY2014	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	436000
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	307000
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	214000
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	4009000
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	7353000
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	63337000
CY2014	amsc	Payments In Lieu Of Issuance Of Common Stock For Payroll Taxes PaymentsInLieuOfIssuanceOfCommonStockForPayrollTaxes	57000
CY2013	amsc	Payments In Lieu Of Issuance Of Common Stock For Payroll Taxes PaymentsInLieuOfIssuanceOfCommonStockForPayrollTaxes	42000
CY2012	amsc	Payments In Lieu Of Issuance Of Common Stock For Payroll Taxes PaymentsInLieuOfIssuanceOfCommonStockForPayrollTaxes	271000
CY2014	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	9842000
CY2013	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	32895000
CY2012	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	4682000
CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	4615000
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1923000
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	4682000
CY2014	us-gaap	Proceeds From Issuance Initial Public Offering ProceedsFromIssuanceInitialPublicOffering	7458000
CY2014	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	168000
CY2014	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	24407000
CY2013	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	18896000
CY2012	us-gaap	Debt Conversion Converted Instrument Amount1 DebtConversionConvertedInstrumentAmount1	720000
CY2014	us-gaap	Interest Paid InterestPaid	990000
CY2013	us-gaap	Interest Paid InterestPaid	787000
CY2014	us-gaap	Nature Of Operations NatureOfOperations	<div> <p style="text-align:justify;margin-bottom:0pt;margin-top:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;"><font style="font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">1. Nature of the Business and Operations and Liquidity </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;margin-left:2.26%;text-indent:0%;font-size:10pt;font-family:Times New Roman;"><font style="font-weight:bold;font-style:italic;;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Nature of the Business and Operations </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">American Superconductor Corporation (“AMSC” or the “Company”) was founded on April 9, 1987. The Company is a leading provider of megawatt-scale solutions that lower the cost of wind power and enhance the performance of the power grid. In the wind power market, the Company enables manufacturers to field wind turbines through its advanced engineering, support services and power electronics products. In the power grid market, the Company enables electric utilities and renewable energy project developers to connect, transmit and distribute power through its transmission planning services and power electronics and superconductor-based products. The Company’s wind and power grid products and services provide exceptional reliability, security, efficiency and affordability to its customers. </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:12pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">The Company’s consolidated financial statements for the year ended March 31, 2014, were prepared on a going concern basis in accordance with United States generally accepted accounting principles (“GAAP”). The going concern basis of presentation assumes that the Company will continue operations and will be able to realize its assets and discharge its liabilities and commitments in the normal course of business. </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:18pt;margin-left:2.26%;text-indent:0%;font-size:10pt;font-family:Times New Roman;"><font style="font-weight:bold;font-style:italic;;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Liquidity </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">The Company has experienced recurring operating losses and as of March 31, 2014 and 2013</font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">, the Company had an accumulated deficit of $856.4 million and $800.1 million, respectively. In addition, the Company has experienced recurring negative operating cash flows. At March 31, 2014, the Company had cash and cash equivalents of $43.1 million which compares to cash used in operations of $13.3 million for the year ended March 31, 2014. At March 31, 2013, the Company had cash and cash equivalents of $39.2 million which compares to cash used in operations of $45.3 million for the year ended March 31, 2013. </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:12pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">From April 1, 2011 through the date of this filing, the Company reduced its global workforce by approximately </font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">68%. The Company is currently in the process of consolidating certain business operations to reduce facility costs. As of March 31, 2014, the Company had a global workforce of approximately 269 persons. The Company plans to closely monitor its expenses and if required, expects to further reduce operating costs and capital spending to enhance liquidity. </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:12pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">On April 4, 2012, the Company completed a private placement of $25.0</font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> million aggregate principal amount of a 7% senior unsecured convertible note (the “Initial Note”) with Capital Ventures International (“CVI”). On December 20, 2012, the Company agreed to exchange the Initial Note for a new unsecured, senior convertible note (the “Exchanged Note”), which had the same principal amount and accrued interest as the Initial Note at the time of the exchange.  On March 2, 2014, the Company entered into an Exchange Agreement with CVI, pursuant to which the Company exchanged the Exchanged Note for approximately 6.6 million shares of common stock and extinguished the debt. (See Note 9, “Debt”, for further information regarding these debt arrangements, including the covenants, restrictions and events of default under the agreements.) </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:12pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">On June 5, 2012, the Company entered into a Loan and Security Agreement (the “Term Loan”), under which the Company borrowed $10.0</font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> million. The Term Loan contains certain covenants and restrictions including, among others, a requirement to maintain a minimum unrestricted cash balance in the U.S. equal to the remaining principal balance. On November 15, 2013, the Company entered into an amendment of the Term Loan (the “New Term Loan”, and collectively with the Term Loan, the “Term Loans”) under which the Company borrowed an additional $10.0 million. The Term Loans contain certain covenants and restrictions. (See Note 9, “Debt”, for further information regarding these debt arrangements, including the covenants, restrictions and events of default under the agreements.) The Company believes that it is in compliance with the covenants and restrictions included in the agreements governing these debt arrangements as of the date of this Annual Report on Form 10-K. </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:12pt;text-indent:4.54%;font-size:10pt;;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">On November 15, 2013, the Company entered into </font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">an At-Market Sales Arrangement (“ATM”) under which the Company may, at its discretion, sell up to $30.0 million of shares of its common stock (before expenses) through its sales agent, MLV & Co. LLC. During the year ended March 31, 2014, the Company received net proceeds of $7.5 million, including sales and commissions and offering expenses, from sales of approximately 4.9 million shares of its common stock at an average sales price of approximately $1.62 per share.  During the three months ended March 31, 2014, the Company received net proceeds of $4.1 million from sales of approximately 2.5 million shares of its common stock at an average sales price of approximately $1.74 per share under the ATM. (See Note 12, “Stockholders’ Equity”, for further information regarding the ATM.) As of March 31, 2014, there was approximately $22.1 million of availability under the Company’s ATM (see further discussion below).  </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:12pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">Sales of common stock under the ATM may be made from time to time, at the Company’s discretion, in order to enhance liquidity. In addition, the Company is actively seeking to sell its minority investments in Tres</font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> Amigas and Blade Dynamics and has engaged a financial advisor to assist with that effort. (See Note 15, “Minority Investments”, for further information about such investments.) There can be no assurance that the Company will be able to sell one or both of these investments on commercially reasonable terms or at all.</font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:12pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">The Company believes it has sufficient available liquidity </font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">to fund its operations, capital expenditures and scheduled cash payments under its debt obligations through June 30, 2015. The Company’s liquidity is highly dependent on its ability to increase revenues, control its operating costs, its ability to utilize the ATM to raise additional capital as required, at its discretion, and its ability to maintain compliance with the covenants and restrictions on its debt obligations (or obtain waivers from its lender in the event of non-compliance). There can be no assurance that the Company will be able to continue to utilize the ATM. </font></p></div>
CY2014	us-gaap	Use Of Estimates UseOfEstimates	<div> <p style="text-align:justify;margin-bottom:0pt;margin-top:18pt;margin-left:2.26%;text-indent:0%;font-size:10pt;font-family:Times New Roman;"><font style="font-weight:bold;font-style:italic;;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Use of Estimates </font></p><p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;"><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;text-indent:4.54%;">The preparation of financial statements in conformity with generally accepted accounting principles of the United States of America, (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. The Company bases its estimates on historical experience and various other factors believed to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. On an ongoing basis, the Company evaluates its estimates, including those related to revenue recognition, collectability of receivables, realizability</font><font style="font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;"> of inventory, goodwill and intangible assets, warranty provisions, stock-based compensation, valuation of warrant and derivative liabilities, tax reserves, and deferred tax assets. Provisions for depreciation are based on their estimated useful lives using the straight-line method. Some of these estimates can be subjective and complex and, consequently, actual results may differ from these estimates under different assumptions or conditions. While for any given estimate or assumption made by the Company’s management there may be other estimates or assumptions that are reasonable, the Company believes that, given the current facts and circumstances, it is unlikely that applying any such other reasonable estimate or assumption would materially impact the financial statements. </font></p></div>
	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated Period Percent RestructuringAndRelatedCostNumberOfPositionsEliminatedPeriodPercent	0.68
CY2014Q1	dei	Entity Number Of Employees EntityNumberOfEmployees	269
CY2014Q1	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	300000
CY2013Q1	us-gaap	Inventory Valuation Reserves InventoryValuationReserves	2200000
CY2014	amsc	Cost Of Revenues Benefit Inventories Previously Written Down CostOfRevenuesBenefitInventoriesPreviouslyWrittenDown	4300000
CY2013	amsc	Cost Of Revenues Benefit Inventories Previously Written Down CostOfRevenuesBenefitInventoriesPreviouslyWrittenDown	2100000
CY2012	amsc	Cost Of Revenues Benefit Inventories Previously Written Down CostOfRevenuesBenefitInventoriesPreviouslyWrittenDown	800000
CY2013	us-gaap	Asset Impairment Charges AssetImpairmentCharges	5000000
CY2012	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1700000
CY2014	us-gaap	Revenues Revenues	3700000
CY2013	us-gaap	Revenues Revenues	3400000
CY2012	us-gaap	Revenues Revenues	5200000
CY2014	amsc	Percentage Of Tax Benefit Likely To Be Realized Upon Ultimate Settlement PercentageOfTaxBenefitLikelyToBeRealizedUponUltimateSettlement	0.50
CY2014	us-gaap	Foreign Earnings Repatriated ForeignEarningsRepatriated	1500000
CY2014	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6431584
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	10725840
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2290416
CY2014	amsc	Weighted Average Shares Of Common Stock Outstanding WeightedAverageSharesOfCommonStockOutstanding	64111000
CY2013	amsc	Weighted Average Shares Of Common Stock Outstanding WeightedAverageSharesOfCommonStockOutstanding	53537000
CY2012	amsc	Weighted Average Shares Of Common Stock Outstanding WeightedAverageSharesOfCommonStockOutstanding	51144000
CY2014	us-gaap	Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation	1489000
CY2013	us-gaap	Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation	467000
CY2012	us-gaap	Weighted Average Number Of Shares Common Stock Subject To Repurchase Or Cancellation WeightedAverageNumberOfSharesCommonStockSubjectToRepurchaseOrCancellation	302000
CY2014	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-100000
CY2013	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	1000000
CY2012	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	3100000
CY2013Q1	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	1800000
CY2014Q1	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	17675000
CY2014Q1	amsc	Warrant Liabilities WarrantLiabilities	2601000
CY2013Q1	us-gaap	Cash Equivalents At Carrying Value CashEquivalentsAtCarryingValue	18649000
CY2013Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	529000
CY2013Q1	amsc	Warrant Liabilities WarrantLiabilities	3633000
CY2014Q1	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1300000
CY2014Q1	us-gaap	Billed Contract Receivables BilledContractReceivables	6113000
CY2013Q1	us-gaap	Billed Contract Receivables BilledContractReceivables	17222000
CY2014Q1	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	1459000
CY2013Q1	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	1642000
CY2014Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	16000
CY2014Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	3304000
CY2013Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	5966000
CY2014Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	4047000
CY2013Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	3427000
CY2014Q1	us-gaap	Inventory Finished Goods InventoryFinishedGoods	10275000
CY2013Q1	us-gaap	Inventory Finished Goods InventoryFinishedGoods	21655000
CY2014Q1	us-gaap	Inventory For Long Term Contracts Or Programs InventoryForLongTermContractsOrPrograms	3068000
CY2013Q1	us-gaap	Inventory For Long Term Contracts Or Programs InventoryForLongTermContractsOrPrograms	2425000
CY2014Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	128526000
CY2013Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	130844000
CY2014Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	63952000
CY2013Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	56218000
CY2014	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	9900000
CY2013	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	12100000
CY2012	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	12900000
CY2014Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	11459000
CY2014Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	9464000
CY2014Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1995000
CY2013Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	11967000
CY2013Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	9218000
CY2013Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	2749000
CY2014	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	800000
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	900000
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2600000
CY2014Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	573000
CY2014Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	568000
CY2014Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	553000
CY2014Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	301000
CY2014Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	1749000
CY2013Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	7146000
CY2014Q1	amsc	Accrued Inventories In Transit AccruedInventoriesInTransit	212000
CY2013Q1	amsc	Accrued Inventories In Transit AccruedInventoriesInTransit	779000
CY2014Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	6076000
CY2013Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	9172000
CY2014Q1	amsc	Accrued Outside Services AccruedOutsideServices	3716000
CY2013Q1	amsc	Accrued Outside Services AccruedOutsideServices	2251000
CY2014Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	290000
CY2013Q1	us-gaap	Accrued Professional Fees Current AccruedProfessionalFeesCurrent	2442000
CY2014Q1	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	5939000
CY2013Q1	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	5506000
CY2014Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	173000
CY2013Q1	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	133000
CY2014Q1	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	402000
CY2013Q1	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	1440000
CY2014Q1	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	3207000
CY2013Q1	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	2709000
CY2013Q1	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	2709000
CY2012Q1	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	5896000
CY2014	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	1717000
CY2013	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	1371000
CY2014	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-1219000
CY2013	us-gaap	Product Warranty Accrual Preexisting Increase Decrease ProductWarrantyAccrualPreexistingIncreaseDecrease	-4558000
CY2014Q1	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	3207000
CY2014	amsc	Percentage Of Stock Discount PercentageOfStockDiscount	0.85
CY2014	amsc	Non Cash Interest Expense Issuing Stock At Discount NonCashInterestExpenseIssuingStockAtDiscount	2900000
CY2013	amsc	Non Cash Interest Expense Issuing Stock At Discount NonCashInterestExpenseIssuingStockAtDiscount	3600000
CY2014	amsc	Number Of Trading Days For Valuation Of Shares NumberOfTradingDaysForValuationOfShares	P10D
CY2014	us-gaap	Interest Expense InterestExpense	9700000
CY2013	us-gaap	Interest Expense InterestExpense	14900000
CY2014	amsc	Non Cash Interest Expense Amortization Of Debt Discount NonCashInterestExpenseAmortizationOfDebtDiscount	7700000
CY2013	amsc	Non Cash Interest Expense Amortization Of Debt Discount NonCashInterestExpenseAmortizationOfDebtDiscount	12400000
CY2013Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	10411000
CY2013Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	10411000
CY2013Q2	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	14389000
CY2013Q4	us-gaap	Share Price SharePrice	1.64
CY2013Q3	us-gaap	Share Price SharePrice	2.34
CY2013Q2	us-gaap	Share Price SharePrice	2.64
CY2013Q4	amsc	Percentage Volume Condition Met PercentageVolumeConditionMet	0.872
CY2013Q3	amsc	Percentage Volume Condition Met PercentageVolumeConditionMet	0.802
CY2013Q2	amsc	Percentage Volume Condition Met PercentageVolumeConditionMet	0.875
CY2013Q4	us-gaap	Fair Value Assumptions Expected Volatility Rate FairValueAssumptionsExpectedVolatilityRate	0.686
CY2013Q3	us-gaap	Fair Value Assumptions Expected Volatility Rate FairValueAssumptionsExpectedVolatilityRate	0.663
CY2013Q2	us-gaap	Fair Value Assumptions Expected Volatility Rate FairValueAssumptionsExpectedVolatilityRate	0.658
CY2013Q4	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0012
CY2013Q3	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0010
CY2013Q2	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0021
CY2013Q4	us-gaap	Fair Value Assumptions Expected Dividend Rate FairValueAssumptionsExpectedDividendRate	0.165
CY2013Q3	us-gaap	Fair Value Assumptions Expected Dividend Rate FairValueAssumptionsExpectedDividendRate	0.155
CY2013Q2	us-gaap	Fair Value Assumptions Expected Dividend Rate FairValueAssumptionsExpectedDividendRate	0.167
CY2013Q4	amsc	Fair Value Assumptions Recovery Rate FairValueAssumptionsRecoveryRate	0.350
CY2013Q3	amsc	Fair Value Assumptions Recovery Rate FairValueAssumptionsRecoveryRate	0.350
CY2013Q2	amsc	Fair Value Assumptions Recovery Rate FairValueAssumptionsRecoveryRate	0.370
CY2014Q1	amsc	Fair Value Assumptions Redeemable FairValueAssumptionsRedeemable	N/A
CY2013Q4	amsc	Fair Value Assumptions Redeemable FairValueAssumptionsRedeemable	yes
CY2013Q3	amsc	Fair Value Assumptions Redeemable FairValueAssumptionsRedeemable	yes
CY2013Q2	amsc	Fair Value Assumptions Redeemable FairValueAssumptionsRedeemable	yes
CY2013Q4	us-gaap	Fair Value Assumptions Expected Term FairValueAssumptionsExpectedTerm	P9M
CY2013Q3	us-gaap	Fair Value Assumptions Expected Term FairValueAssumptionsExpectedTerm	P1Y
CY2013Q2	us-gaap	Fair Value Assumptions Expected Term FairValueAssumptionsExpectedTerm	P1Y3M4D
CY2014Q1	amsc	Fair Value Assumptions Dilution Effect FairValueAssumptionsDilutionEffect	N/A
CY2013Q4	amsc	Fair Value Assumptions Dilution Effect FairValueAssumptionsDilutionEffect	yes
CY2013Q3	amsc	Fair Value Assumptions Dilution Effect FairValueAssumptionsDilutionEffect	yes
CY2013Q2	amsc	Fair Value Assumptions Dilution Effect FairValueAssumptionsDilutionEffect	yes
CY2013Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	200000
CY2013Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	5444000
CY2013Q4	amsc	Convertible Notes Fair Value As Percentage Of Par Value ConvertibleNotesFairValueAsPercentageOfParValue	0.0002
CY2013Q3	amsc	Convertible Notes Fair Value As Percentage Of Par Value ConvertibleNotesFairValueAsPercentageOfParValue	0.007
CY2012Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	20944000
CY2013Q2	amsc	Convertible Notes Fair Value As Percentage Of Par Value ConvertibleNotesFairValueAsPercentageOfParValue	0.033
CY2013Q1	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	15380000
CY2012Q4	amsc	Convertible Notes Fair Value As Percentage Of Par Value ConvertibleNotesFairValueAsPercentageOfParValue	0.049
CY2012Q2	us-gaap	Fair Value Assumptions Expected Term FairValueAssumptionsExpectedTerm	P2Y6M
CY2012Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	24074000
CY2012Q2	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	25000000
CY2012Q2	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	25000000
CY2013Q1	us-gaap	Share Price SharePrice	2.67
CY2012Q4	us-gaap	Share Price SharePrice	2.62
CY2012Q3	us-gaap	Share Price SharePrice	4.15
CY2012Q2	us-gaap	Share Price SharePrice	4.68
CY2012Q2	us-gaap	Share Price SharePrice	3.97
CY2013Q1	amsc	Percentage Volume Condition Met PercentageVolumeConditionMet	0.805
CY2012Q4	amsc	Percentage Volume Condition Met PercentageVolumeConditionMet	0.945
CY2012Q3	amsc	Percentage Volume Condition Met PercentageVolumeConditionMet	0.510
CY2012Q2	amsc	Percentage Volume Condition Met PercentageVolumeConditionMet	0.752
CY2012Q2	amsc	Percentage Volume Condition Met PercentageVolumeConditionMet	0.859
CY2013Q1	us-gaap	Fair Value Assumptions Expected Volatility Rate FairValueAssumptionsExpectedVolatilityRate	0.669
CY2012Q4	us-gaap	Fair Value Assumptions Expected Volatility Rate FairValueAssumptionsExpectedVolatilityRate	0.735
CY2012Q3	us-gaap	Fair Value Assumptions Expected Volatility Rate FairValueAssumptionsExpectedVolatilityRate	0.700
CY2012Q2	us-gaap	Fair Value Assumptions Expected Volatility Rate FairValueAssumptionsExpectedVolatilityRate	0.710
CY2012Q2	us-gaap	Fair Value Assumptions Expected Volatility Rate FairValueAssumptionsExpectedVolatilityRate	0.750
CY2013Q1	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0020
CY2012Q4	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0023
CY2012Q3	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0023
CY2012Q2	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0033
CY2012Q2	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0044
CY2013Q1	us-gaap	Fair Value Assumptions Expected Dividend Rate FairValueAssumptionsExpectedDividendRate	0.165
CY2012Q4	us-gaap	Fair Value Assumptions Expected Dividend Rate FairValueAssumptionsExpectedDividendRate	0.165
CY2012Q3	us-gaap	Fair Value Assumptions Expected Dividend Rate FairValueAssumptionsExpectedDividendRate	0.150
CY2012Q2	us-gaap	Fair Value Assumptions Expected Dividend Rate FairValueAssumptionsExpectedDividendRate	0.160
CY2012Q2	us-gaap	Fair Value Assumptions Expected Dividend Rate FairValueAssumptionsExpectedDividendRate	0.150
CY2013Q1	amsc	Fair Value Assumptions Recovery Rate FairValueAssumptionsRecoveryRate	0.300
CY2012Q4	amsc	Fair Value Assumptions Recovery Rate FairValueAssumptionsRecoveryRate	0.300
CY2012Q3	amsc	Fair Value Assumptions Recovery Rate FairValueAssumptionsRecoveryRate	0.300
CY2012Q2	amsc	Fair Value Assumptions Recovery Rate FairValueAssumptionsRecoveryRate	0.300
CY2012Q2	amsc	Fair Value Assumptions Recovery Rate FairValueAssumptionsRecoveryRate	0.300
CY2013Q1	amsc	Fair Value Assumptions Redeemable FairValueAssumptionsRedeemable	yes
CY2012Q4	amsc	Fair Value Assumptions Redeemable FairValueAssumptionsRedeemable	yes
CY2012Q3	amsc	Fair Value Assumptions Redeemable FairValueAssumptionsRedeemable	yes
CY2012Q2	amsc	Fair Value Assumptions Redeemable FairValueAssumptionsRedeemable	yes
CY2012Q2	amsc	Fair Value Assumptions Redeemable FairValueAssumptionsRedeemable	yes
CY2013Q1	us-gaap	Fair Value Assumptions Expected Term FairValueAssumptionsExpectedTerm	P1Y6M4D
CY2012Q4	us-gaap	Fair Value Assumptions Expected Term FairValueAssumptionsExpectedTerm	P1Y9M4D
CY2012Q3	us-gaap	Fair Value Assumptions Expected Term FairValueAssumptionsExpectedTerm	P2Y4D
CY2012Q2	us-gaap	Fair Value Assumptions Expected Term FairValueAssumptionsExpectedTerm	P2Y3M11D
CY2013Q1	amsc	Fair Value Assumptions Dilution Effect FairValueAssumptionsDilutionEffect	yes
CY2012Q4	amsc	Fair Value Assumptions Dilution Effect FairValueAssumptionsDilutionEffect	yes
CY2012Q3	amsc	Fair Value Assumptions Dilution Effect FairValueAssumptionsDilutionEffect	yes
CY2012Q2	amsc	Fair Value Assumptions Dilution Effect FairValueAssumptionsDilutionEffect	yes
CY2012Q2	amsc	Fair Value Assumptions Dilution Effect FairValueAssumptionsDilutionEffect	yes
CY2012Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1000000
CY2012Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	2800000
CY2012Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	4500000
CY2012Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	3800000
CY2013Q1	amsc	Convertible Notes Fair Value As Percentage Of Par Value ConvertibleNotesFairValueAsPercentageOfParValue	0.034
CY2012Q2	amsc	Convertible Notes Fair Value As Percentage Of Par Value ConvertibleNotesFairValueAsPercentageOfParValue	0.151
CY2014	amsc	Convertible Debt Instrument Redemption Waiting Period ConvertibleDebtInstrumentRedemptionWaitingPeriod	P1Y
CY2014	amsc	Convertible Debt Instrument Contractual Term ConvertibleDebtInstrumentContractualTerm	P30M
CY2012Q2	invest	Investment Warrants Expiration Date InvestmentWarrantsExpirationDate	2017-12-05
CY2012Q3	amsc	Convertible Notes Fair Value As Percentage Of Par Value ConvertibleNotesFairValueAsPercentageOfParValue	0.114
CY2012Q2	amsc	Convertible Notes Fair Value As Percentage Of Par Value ConvertibleNotesFairValueAsPercentageOfParValue	0.179
CY2013Q4	invest	Investment Warrants Expiration Date InvestmentWarrantsExpirationDate	2019-05-15
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-91558000
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-66975000
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	-107301000
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	36152000
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	580000
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-28157000
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	287000
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	94000
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit
CY2014	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	614000
CY2013	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	-438000
CY2012	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1369000
CY2014	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	901000
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-344000
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	1369000
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-49000
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	93000
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit
CY2013	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-13000
CY2014	amsc	Deferred Income Tax Expense Benefit Total DeferredIncomeTaxExpenseBenefitTotal	-49000
CY2013	amsc	Deferred Income Tax Expense Benefit Total DeferredIncomeTaxExpenseBenefitTotal	80000
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	-0.34
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	-0.34
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	-0.34
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.03
CY2012	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	-0.02
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.01
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.02
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.03
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.06
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.02
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.03
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.02
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	-0.02
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.01
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.01
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.01
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Research And Development EffectiveIncomeTaxRateReconciliationNondeductibleExpenseResearchAndDevelopment	-0.01
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Research And Development EffectiveIncomeTaxRateReconciliationNondeductibleExpenseResearchAndDevelopment	-0.01
CY2014	amsc	Effective Income Tax Rate Reconciliation Deferred Warrants EffectiveIncomeTaxRateReconciliationDeferredWarrants	-0.01
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.05
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.07
CY2014	amsc	Effective Income Tax Rate Reconciliation Debt Extinguishment EffectiveIncomeTaxRateReconciliationDebtExtinguishment	0.03
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.30
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.32
CY2012	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.31
CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.01
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.01
CY2014Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	36214000
CY2013Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	35490000
CY2014Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	260254000
CY2013Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	239040000
CY2014Q1	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	10613000
CY2013Q1	us-gaap	Deferred Tax Assets In Process Research And Development DeferredTaxAssetsInProcessResearchAndDevelopment	10112000
CY2014Q1	amsc	Deferred Tax Assets Fixed Assets And Intangibles DeferredTaxAssetsFixedAssetsAndIntangibles	2855000
CY2013Q1	amsc	Deferred Tax Assets Fixed Assets And Intangibles DeferredTaxAssetsFixedAssetsAndIntangibles	4101000
CY2014Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	19594000
CY2013Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	18292000
CY2014Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	329530000
CY2013Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	307035000
CY2014Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	282824000
CY2013Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	261961000
CY2014Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	46706000
CY2013Q1	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	45074000
CY2014Q1	amsc	Deferred Tax Liabilities Intercompany Debt DeferredTaxLiabilitiesIntercompanyDebt	36102000
CY2013Q1	amsc	Deferred Tax Liabilities Intercompany Debt DeferredTaxLiabilitiesIntercompanyDebt	35185000
CY2014Q1	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	10641000
CY2013Q1	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	9979000
CY2014Q1	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	46743000
CY2013Q1	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	45164000
CY2014Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-37000
CY2013Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-90000
CY2014Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	13900000
CY2014	us-gaap	Deferred Tax Expense From Stock Options Exercised DeferredTaxExpenseFromStockOptionsExercised	52400000
CY2014	amsc	Stock Options Exercised Dates StockOptionsExercisedDates	March 31, 2006 through 2014
CY2014	amsc	Minimum Percentage Of Amount Being Realized Upon Ultimate Settlement MinimumPercentageOfAmountBeingRealizedUponUltimateSettlement	0.50
CY2014Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1100000
CY2013Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	1100000
CY2012Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1061000
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
CY2013Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1061000
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
CY2014Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1061000
CY2014	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	10696000
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8138000
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9864000
CY2013Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2671194
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	830765
CY2014	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	560121
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	2941838
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1484288
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	2836755
CY2013Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	13.77
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	2.48
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	11.93
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	10.93
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	15.22
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice	11.15
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y8M12D
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested And Expected To Vest Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1	P6Y7M6D
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0
CY2014Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	0
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	0
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	1.62
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	2.56
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	6.02
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.751
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.720
CY2014	amsc	Percentage Of Common Stock Matched Under Deferred Compensation Plan For Specified Percentage Of Eligible Contribution PercentageOfCommonStockMatchedUnderDeferredCompensationPlanForSpecifiedPercentageOfEligibleContribution	0.50
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.700
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.017
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.009
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.018
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y10M24D
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y10M24D
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y10M24D
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.00
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.00
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.00
CY2013Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2404825
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1945610
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	1740959
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	194112
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2415364
CY2013Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	4.58
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	2.30
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	3.91
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	3.54
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	3.34
CY2014Q1	amsc	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingIntrinsicValue	3889000
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Expiration Date ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate	2007-05-02
CY2014	amsc	Share Based Compensation Arrangement By Share Based Payment Award Options Contractual Life ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsContractualLife	P10Y
CY2014	amsc	Vesting Period Of Shares Granted By Option Upon Election To Board VestingPeriodOfSharesGrantedByOptionUponElectionToBoard	P2Y
CY2014	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	100000
CY2013	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	100000
CY2012	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	100000
CY2013	amsc	Long Term Purchase Commitment Adverse Purchase Commitment Accrual LongTermPurchaseCommitmentAdversePurchaseCommitmentAccrual	7800000
CY2014Q1	amsc	Area Of Leased Property AreaOfLeasedProperty	316000
CY2014Q1	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	1764000
CY2014Q1	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	1166000
CY2014Q1	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	674000
CY2014Q1	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	423000
CY2014Q1	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	211000
CY2014Q1	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	378000
CY2014Q1	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	4616000
CY2014	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	2152000
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	2437000
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	3336000
CY2011Q2	us-gaap	Loss Contingency New Claims Filed Number LossContingencyNewClaimsFiledNumber	7
CY2011Q2	amsc	Number Of Officers Putative Securities Filed Against NumberOfOfficersPutativeSecuritiesFiledAgainst	2
CY2011Q2	amsc	Number Of Complaint Additionally Asserted Claims Against Underwriters NumberOfComplaintAdditionallyAssertedClaimsAgainstUnderwriters	1
CY2013Q4	us-gaap	Loss Contingency Damages Sought Value LossContingencyDamagesSoughtValue	10000000
CY2013Q4	us-gaap	Insurance Settlements Receivable InsuranceSettlementsReceivable	8200000
CY2013Q4	amsc	Settlement Amount Expected To Be Paid By Issuance Of Common Stock SettlementAmountExpectedToBePaidByIssuanceOfCommonStock	1800000
CY2013Q4	us-gaap	Common Stock Capital Shares Reserved For Future Issuance CommonStockCapitalSharesReservedForFutureIssuance	944882
CY2014	us-gaap	Loss Contingency Loss In Period LossContingencyLossInPeriod	1800000
CY2011Q3	amsc	Loss Contingency Number Of Claims Consolidated LossContingencyNumberOfClaimsConsolidated	3
CY2014Q1	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	2700000
CY2014Q1	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	3700000
CY2014	amsc	Percentage Of Eligible Contribution Under Deferred Compensation Plan PercentageOfEligibleContributionUnderDeferredCompensationPlan	0.06
CY2014	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	400000
CY2013	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	500000
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	700000
CY2014	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1265000
CY2013Q1	amsc	Fair Value Of Remaining Lease Payments FairValueOfRemainingLeasePayments	400000
CY2014	us-gaap	Severance Costs1 SeveranceCosts1	1700000
CY2013	us-gaap	Severance Costs1 SeveranceCosts1	2500000
CY2012	us-gaap	Severance Costs1 SeveranceCosts1	5300000
CY2012Q1	us-gaap	Restructuring Reserve RestructuringReserve	974000
CY2013	us-gaap	Restructuring Charges RestructuringCharges	2937000
CY2013	us-gaap	Payments For Restructuring PaymentsForRestructuring	3712000
CY2013Q1	us-gaap	Restructuring Reserve RestructuringReserve	199000
CY2014	us-gaap	Restructuring Charges RestructuringCharges	1733000
CY2014	us-gaap	Payments For Restructuring PaymentsForRestructuring	873000
CY2014	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-215000
CY2014Q1	us-gaap	Restructuring Reserve RestructuringReserve	844000
CY2012	us-gaap	Business Exit Costs1 BusinessExitCosts1	300000
CY2014	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2
CY2014	amsc	Business Segments Power Of Wind Turbines BusinessSegmentsPowerOfWindTurbines	2
CY2014	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	3000000
CY2013	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	7900000
CY2012	us-gaap	Restructuring Costs And Asset Impairment Charges RestructuringCostsAndAssetImpairmentCharges	9200000
CY2014Q1	amsc	Number Of Customers NumberOfCustomers	2
CY2013Q2	us-gaap	Sales Revenue Net SalesRevenueNet	23086000
CY2013Q3	us-gaap	Sales Revenue Net SalesRevenueNet	24181000
CY2013Q4	us-gaap	Sales Revenue Net SalesRevenueNet	20563000
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-8850000
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-11028000
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-6675000
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	-10513000
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	-14623000
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	-8417000
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.18
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.24
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.14
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.18
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.24
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.14
CY2012Q2	us-gaap	Sales Revenue Net SalesRevenueNet	28716000
CY2012Q3	us-gaap	Sales Revenue Net SalesRevenueNet	20867000
CY2012Q4	us-gaap	Sales Revenue Net SalesRevenueNet	17417000
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-6128000
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	-14970000
CY2012Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-20616000
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	-10275000
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	-15949000
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	-20135000
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.20
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.31
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.38
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.20
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.31
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.38

Files In Submission

Name	View Source	Status
0001564590-14-002420-index-headers.html	Edgar Link	pending
0001564590-14-002420-index.html	Edgar Link	pending
0001564590-14-002420.txt	Edgar Link	pending
0001564590-14-002420-xbrl.zip	Edgar Link	pending
amsc-10k_20140331.htm	Edgar Link	pending
amsc-20140331.xml	Edgar Link	completed
amsc-20140331.xsd	Edgar Link	pending
amsc-20140331_cal.xml	Edgar Link	unprocessable
amsc-20140331_def.xml	Edgar Link	unprocessable
amsc-20140331_lab.xml	Edgar Link	unprocessable
amsc-20140331_pre.xml	Edgar Link	unprocessable
amsc-ex10_20140331363.htm	Edgar Link	pending
amsc-ex21_20140331248.htm	Edgar Link	pending
amsc-ex23_20140331364.htm	Edgar Link	pending
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amsc-ex31_20140331249.htm	Edgar Link	pending
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amsc-ex32_20140331252.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
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$AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/ Stock $amsc

2014 Q1 Form 10-K Financial Statement

#000156459014002420 Filed on June 05, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMSC AMERICAN SUPERCONDUCTOR CORP /DE/ Stock $amsc

2014 Q1 Form 10-K Financial Statement

#000156459014002420 Filed on June 05, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AMSC
AMERICAN SUPERCONDUCTOR CORP /DE/ Stock $amsc