American Superconductor (AMSC) 10-K 2 Jun 20 2020 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2020	May 29, 2020	Sep. 30, 2019
Document Information [Line Items]
Entity Registrant Name	AMERICAN SUPERCONDUCTOR CORP /DE/
Entity Central Index Key	0000880807
Trading Symbol	amsc
Current Fiscal Year End Date	--03-31
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding (in shares)		22,636,686
Entity Public Float			$ 163.9
Entity Shell Company	false
Document Type	10-K
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment Flag	false
Title of 12(b) Security	Common Stock, par value $0.01 per share

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Current assets:
Cash and cash equivalents	$ 24,699	$ 77,483
Marketable securities	30,149
Accounts receivable	16,987	7,855
Inventory	18,975	12,119
Notes receivable, current portion		2,888
Prepaid expenses and other current assets	2,959	3,053
Restricted cash	508
Total current assets	94,277	103,398
Marketable securities, long term portion	5,046
Property, plant and equipment, net	8,565	8,972
Intangibles, net	3,550	2,890
Right of use asset	3,359
Goodwill	1,719	1,719
Restricted cash	5,657	715
Deferred tax assets	1,551	1,357
Other assets	385	279
Total assets	124,109	119,330
Current liabilities:
Accounts payable and accrued expenses	22,091	15,885
Operating lease liabilities – ST	439
Derivative liabilities		4,942
Deferred revenue, current portion	18,430	7,557
Total current liabilities	40,960	28,384
Deferred revenue, long term portion	7,712	7,962
Operating lease liabilities – LT	3,000
Deferred tax liabilities	180	1,698
Other liabilities	38	93
Total liabilities	51,890	38,137
Commitments and contingencies (Note 16)
Stockholders' equity:
Common stock, $0.01 par value, 75,000,000 shares authorized; 22,902,288 and 21,651,631 shares issued and 22,604,410 and 21,413,113 shares outstanding at March 31, 2020 and 2019, respectively	229	216
Additional paid-in capital	1,053,507	1,044,622
Treasury stock, at cost, 297,878 and 235,518 shares at March 31, 2020 and 2019, respectively	(2,666)	(2,101)
Accumulated other comprehensive loss	(216)	(5)
Accumulated deficit	(978,635)	(961,539)
Total stockholders' equity	72,219	81,193
Total liabilities and stockholders' equity	$ 124,109	$ 119,330

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Mar. 31, 2020	Mar. 31, 2019
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	22,902,288	21,651,631
Common stock, shares outstanding (in shares)	22,604,410	21,413,113
Treasury stock, shares (in shares)	297,878	235,518

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues	$ 63,838	$ 56,207
Cost of revenues	54,393	42,190
Gross profit	9,445	14,017
Operating expenses:
Research and development	9,565	9,874
Selling, general and administrative	22,669	22,028
Gain on Sinovel settlement		(52,698)
Amortization of acquisition related intangibles	340	340
Restructuring		450
Total operating expenses (income)	32,574	(20,006)
Operating (loss) income	(23,129)	34,023
Change in fair value of derivatives and warrants	4,648	(3,725)
Gain on sale of minority interests		127
Interest income (expense), net	1,327	1,117
Other income (expense), net	253	1,599
(Loss) income before income tax expense	(16,901)	33,141
Income tax expense	195	6,380
Net (loss) income	$ (17,096)	$ 26,761
Net (loss) income per common share
Basic (in dollars per share)	$ (0.81)	$ 1.32
Diluted (in dollars per share)	$ (1.03)	$ 1.29
Weighted average number of common shares outstanding
Basic (in shares)	20,985	20,335
Diluted (in shares)	21,069	20,726

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net (loss) income	$ (17,096)	$ 26,761
Other comprehensive loss, net of tax:
Foreign currency translation losses	(211)	(888)
Total other comprehensive loss, net of tax	(211)	(888)
Comprehensive (loss) income	$ (17,307)	$ 25,873

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Mar. 31, 2018	21,139,000
Balance at Mar. 31, 2018	$ 211	$ 1,041,113	$ (1,645)	$ 883	$ (988,333)	$ 52,229
Issuance of common stock - ESPP (in shares)	20,000
Issuance of common stock - ESPP		157				157
Issuance of common stock - restricted shares (in shares)	451,000
Issuance of common stock - restricted shares	$ 4	(4)
Stock-based compensation expense		3,030				3,030
Issuance of stock for 401(k) match (in shares)	42,000
Issuance of stock for 401(k) match	$ 1	326				327
Repurchase of treasury stock			(456)			(456)
Cumulative translation adjustment				(888)		(888)
Cumulative impact of adoption of ASU No. 2014-09					33	33
Net (loss) income					26,761	$ 26,761
Balance (in shares) at Mar. 31, 2019	21,652,000					21,413,113
Balance at Mar. 31, 2019	$ 216	1,044,622	(2,101)	(5)	(961,539)	$ 81,193
Issuance of common stock - ESPP (in shares)	37,000
Issuance of common stock - ESPP		201				201
Issuance of common stock - restricted shares (in shares)	360,000
Issuance of common stock - restricted shares	$ 4	(4)
Stock-based compensation expense		1,922				1,922
Issuance of stock for 401(k) match (in shares)	44,000
Issuance of stock for 401(k) match	$ 1	341				342
Repurchase of treasury stock			(565)			(565)
Cumulative translation adjustment				(211)		(211)
Net (loss) income					(17,096)	(17,096)
Issuance of common stock-warrant exercise (in shares)	809,000
Issuance of common stock-warrant exercise	$ 8	6,425				$ 6,433
Balance (in shares) at Mar. 31, 2020	22,902,000					22,604,410
Balance at Mar. 31, 2020	$ 229	$ 1,053,507	$ (2,666)	$ (216)	$ (978,635)	$ 72,219

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net (loss) income	$ (17,096)	$ 26,761
Adjustments to reconcile net (loss) income to net cash (used in) provided by operations:
Depreciation and amortization	4,308	4,609
Stock-based compensation expense	1,922	3,030
Provision for excess and obsolete inventory	1,276	878
Gain on sale from minority interest investments		(127)
Deferred income taxes	(1,714)	735
Change in fair value of warrants	(4,648)	3,725
Non-cash interest income	(308)	(224)
Other non-cash items	329	(852)
Unrealized foreign exchange gain on cash and cash equivalents	(319)
Changes in operating asset and liability accounts:
Accounts receivable	(9,159)	(529)
Inventory	(8,143)	5,007
Prepaid expenses and other current assets	373	(365)
Accounts payable and accrued expenses	5,894	2,839
Deferred revenue	10,788	(2,773)
Net cash (used in) provided by operating activities	(16,497)	42,714
Cash flows from investing activities:
Purchase of property, plant and equipment	(3,630)	(952)
Proceeds from the sale of property, plant and equipment	3,001	3,138
Purchase of marketable securities	(35,000)
Purchase of intangible assets	(1,000)
Proceeds from sale of minority interests		127
Change in other assets	8	(144)
Net cash (used in) provided by investing activities	(36,621)	2,169
Cash flows from financing activities:
Employee taxes paid related to net settlement of equity awards	(565)	(456)
Proceeds from exercise of warrants	6,139
Proceeds from exercise of employee stock options and ESPP	202	157
Net cash provided by (used in) financing activities	5,776	(299)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	8	(635)
Net (decrease) increase in cash, cash equivalents and restricted cash	(47,334)	43,949
Cash, cash equivalents and restricted cash at beginning of year	78,198	34,249
Cash, cash equivalents and restricted cash at end of year	30,864	78,198
Supplemental schedule of cash flow information:
Cash paid for income taxes, net of refunds	3,653	2,859
Issuance of common stock to settle liabilities	407	457
Hercules [Member]
Supplemental schedule of cash flow information:
Issuance of common stock to Hercules to settle warrant liability	$ 294

Note 1 - Nature of the Business

Note 1 - Nature of the Business and Operations and Liquidity	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	1. Nature of the Business and Operations American Superconductor Corporation (together with its subsidiaries, “AMSC®” or the “Company”) was founded on April 9, 1987. The Company’s consolidated financial statements have been prepared on a going concern basis in accordance with United States generally accepted accounting principles (“GAAP”) and the Securities and Exchange Commission’s (“SEC”) instructions to Form 10 Liquidity The Company has historically experienced recurring operating losses and as of March 31, 2020 978.6 March 31, 2020 59.9 eleven eighteen March 31, 2020 16.5 On July 3, 2018, $57.5 two first $32.5 July 4, 2018, nine December 31, 2018, second $25.0 December 27, 2018. 2018 $52.7 On February 1, 2018, 64 64 $23.0 $17.0 $6.0 64 March 28, 2018, $16.9 1.96%. second second first $3.0 March 28, 2019 second $3.0 May 23, 2019. In December 2015, $210.0 three three May 29, 2020, €6.0 €6.0 ninety may The Company issued warrants in conjunction with an equity offering to Hudson Bay Capital ("Hudson") in November 2014 ( November 13, 2019 $7.81. $6.1 786,000 32,181 November 13, 2019. In March 2020, 19“ 19 19 not 19 may While the COVID- 19 19 may 19 may The Company believes that based on the information presented above and its annual management assessment, it has sufficient liquidity to fund its operations and capital expenditures for the next twelve March 31, 2020 19 may no

Note 2 - Summary of Significant

Note 2 - Summary of Significant Accounting Policies	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Significant Accounting Policies [Text Block]	2. Basis of Consolidation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions are eliminated. Certain reclassifications of prior years’ amounts have been made to conform to the current year presentation. These reclassifications had no Use of Estimates The preparation of financial statements in conformity with 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 may may Cash Equivalents Cash equivalents consist of highly liquid instruments with maturities of three 1 Marketable Securities Marketable securities consist of certificates of deposit with maturities of greater than 12 1 Accounts Receivable Accounts receivable consist of amounts owed by commercial companies and government agencies. Accounts receivable are stated net of allowances for doubtful accounts. The Company’s accounts receivable relate principally to a limited number of customers. As of March 31, 2020 25%, 18%, 17% no 10% March 31, 2019 21% 3, 16% no 10% may may may Inventory Inventories include material, direct labor and related manufacturing overhead, and are stated at the lower of cost, determined on a first first first first Program costs may At each balance sheet date, the Company evaluates its ending inventories for excess quantities and obsolescence. Inventories that management considers excess or obsolete are reserved. Management considers forecasted demand in relation to the inventory on hand, competitiveness of product offerings, market conditions and product life cycles when determining excess and obsolescence and net realizable value adjustments. Once inventory is written down and a new cost basis is established, it is not For the fiscal years ended March 31, 2020 2019 1.3 $0.9 Leases Leases include all agreements in which we obtain control of a physical asset. Leases are captured on the balance sheet as both a right of use asset and associated lease liability and are valued based on the commencement of our control of the asset, after being discounted by our incremental borrowing rate. Our lease portfolio is made up primarily of real estate leases for our various offices, but also include items such as vehicles, IT equipment and other miscellaneous tools and equipment needed for manufacturing. Our incremental borrowing rate was determined through an analysis to identify what rates we could obtain if we were to secure external financing for similar transactions, and includes considerations of both the market and our current credit ratings. An analysis is performed annually, or upon execution of any individually material agreement, to ensure that the rates being applied to newly acquired leases are still accurate. The majority of the Company's leases are classified as operating leases, and therefore the expense is captured in income from operations each period. We have elected to exclude all leases of less than twelve not Property, Plant and Equipment Property, plant and equipment are carried at cost less accumulated depreciation and amortization. The Company accounts for depreciation and amortization using the straight-line method to allocate the cost of property, plant and equipment over their estimated useful lives as follows: Asset Classification Estimated Useful Life in Years Machinery and equipment 3-10 Furniture and fixtures 3-5 Leasehold improvements Shorter of the estimated useful life or the remaining lease term Expenditures for maintenance and repairs are expensed as incurred. Upon retirement or other disposition of assets, the costs and related accumulated depreciation are eliminated from the accounts and the resulting gain or loss is reflected in operating expenses. Valuation of Long-Lived Assets The Company periodically evaluates its long-lived assets, consisting principally of fixed assets and amortizable intangible assets, for potential impairment. In accordance with the applicable accounting guidance for the treatment of long-lived assets, the Company reviews the carrying value of its long-lived assets or asset group that is held and used, including intangible assets subject to amortization, for impairment whenever events and circumstances indicate that the carrying value of the assets may not may not There were no March 31, 2020 2019 Goodwill Goodwill represents the excess of cost over net assets of acquired businesses that are consolidated. The Company performs its annual assessment of goodwill on February 28th may not first not not not 4, The Company performed its annual assessment of goodwill on February 28, 2020 no March 31, 2020 no no March 31, 2019 Revenue Recognition Revenue contracts are defined as an arrangement that creates enforceable rights and obligations of both parties where collection of the contract price is deemed probable. five can occur at the time of delivery, installation or post-installation where applicable. The Company's equipment and system product line includes certain contracts which do not not 606. not 606 For certain arrangements, such as contracts to perform research and development, prototype development contracts and certain customized product sales, the Company records revenues using the over-time method, measured by the relationship of costs incurred to total estimated contract costs. Over-time revenue recognition accounting is predominantly used on certain turnkey power systems installations for electric utilities and long-term prototype development contracts with the U.S. government. The Company follows this method when any of the three no The Company enters into sales arrangements that may may Performance obligations are separated into more than one 1 2 The Company reviews SSP and the related margins at least annually. The Company’s license agreements provide either for the payment of contractually determined paid-up front license fees or milestone based payments in consideration for the grant of rights to manufacture and or sell products using its patented technologies or know-how. Some of these agreements provide for the release of the licensee from past and future intellectual property infringement claims. When the Company can determine that it has no may no not Existing customers are subject to ongoing credit evaluations based on payment history and other factors. If it is determined that collectability of any portion of the contract value is not not The Company has elected to record taxes collected from customers on a net basis and does not The Company’s contract assets and liabilities primarily relate to the timing differences between cash received from a customer in connection with contractual rights to invoicing and the timing of revenue recognition following completion of performance obligations. The Company's accounts receivable balance is made up entirely of customer contract related balances. See Note 3, 606, Revenue from Contracts with Customers Product Warranty Warranty obligations are incurred in connection with the sale of the Company’s products. The Company provides assurance-type warranties on all product sales for a term of typically one three four Research and Development Costs Research and development costs are expensed as incurred. Income Taxes The Company’s provision for income taxes is comprised of a current and a deferred portion. The current income tax provision is calculated as the estimated taxes payable or refundable on tax returns for the current year. The deferred income tax provision is calculated for the estimated future tax effects attributable to temporary differences and carry-forwards using expected tax rates in effect in the years during which the differences are expected to reverse. Deferred income taxes are recognized for the tax consequences in future years of differences between the tax bases of assets and liabilities and their financial reporting amounts at each fiscal year end based on enacted tax laws and statutory tax rates applicable to the periods in which the differences are expected to affect taxable income. Valuation allowances are established when necessary to reduce net deferred tax assets to the amount expected to be realized. The Company has provided a valuation allowance against its U.S. and China deferred income tax assets since the Company believes that it is more likely than not not Accounting for income taxes requires a two first not second 50% not 13, Stock-Based Compensation The Company accounts for stock-based payment transactions using a fair value-based method and recognizes the related expense in the results of operations. Stock-based compensation is estimated at the grant date based on the fair value of the award and is recognized as expense over the requisite service period of the award. The fair value of restricted stock awards is determined by reference to the fair market value of the Company’s common stock on the date of grant. The Company uses the Black-Scholes option pricing model to estimate the fair value of awards with service and performance conditions. For awards with service conditions only, the Company recognizes compensation cost on a straight-line basis over the requisite service/vesting period. For awards with performance conditions, accruals of compensation cost are made based on the probable outcome of the performance conditions. The cumulative effect of changes in the probability outcomes are recorded in the period in which the changes occur. Determining the appropriate fair value model and related assumptions requires judgment, including estimating stock price volatilities of the Company’s common stock and expected terms. The expected volatility rates are estimated based on historical and implied volatilities of the Company’s common stock. The expected term represents the average time that the options that vest are expected to be outstanding based on the vesting provisions and the Company’s historical exercise, cancellation and expiration patterns. The Company estimates pre-vesting forfeitures when recognizing compensation expense based on historical and forward-looking factors. Changes in estimated forfeiture rates and differences between estimated forfeiture rates and actual experience may may The Company accounts in the same manner as other share-based payments for employees, with the measurement being based on the fair value at the grant date. The non-employee share based payments will be included within the Company's stock compensation currently reported. Computation of Net Income (Loss) per Common Share Basic net income (loss) per share (“EPS”) is computed by dividing net loss by the weighted-average number of common shares outstanding for the period. Diluted EPS is computed by dividing the net loss by the weighted-average number of common shares and dilutive common equivalent shares outstanding during the period, calculated using the treasury stock method. Common equivalent shares include the effect of restricted stock, exercise of stock options and warrants and contingently issuable shares. For the fiscal years ended March 31, 2020 2019 354,748, 907,988, not reconciles March 31, 2020 2019 Fiscal year ended March 31, 2020 2019 Numerator: Net income (loss) $ (17,096 ) $ 26,761 Less: decrease in fair value of warrants, net of income tax (4,648 ) — Plus: change in fair value due to exercise of warrants 83 — Net income (loss) - diluted $ (21,662 ) $ 26,761 Denominator: Weighted-average shares of common stock outstanding 21,937 21,265 Weighted-average shares subject to repurchase (953 ) (930 ) Shares used in per-share calculation ― basic 20,985 20,335 Common stock awards — 391 Common stock warrants 84 — Shares used in per-share calculation ― diluted 21,069 20,726 Net income (loss) per share ― basic $ (0.81 ) $ 1.32 Net income (loss) per share ― diluted $ (1.03 ) $ 1.29 Foreign Currency Translation The functional currency of all the Company’s foreign subsidiaries is the U.S. dollar, except for AMSC Austria, for which the local currency (Euro) is the functional currency, and AMSC China, for which the local currency (Renminbi) is the functional currency. The assets and liabilities of AMSC Austria and AMSC China are translated into U.S. dollars at the exchange rate in effect at the balance sheet date and income and expense items are translated at average rates for the period. Cumulative translation adjustments are excluded from net loss (income) and shown as a separate component of stockholders’ equity. Net foreign currency gains and losses are included in other income (expense), net on the consolidated statements of operations and were $ 0.1 $1.6 March 31, 2020 2019 no Risks and Uncertainties The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could materially differ from those estimates and would impact future results of operations and cash flows. The Company invests its available cash in high credit, quality financial instruments and invests primarily in investment-grade marketable securities, including, but not Several of the Company’s government contracts are being funded incrementally, and as such, are subject to the future authorization, appropriation, and availability of government funding. The Company has a history of successfully obtaining financing under incrementally-funded contracts with the U.S. government and it expects to continue to obtain additional contract modifications in the year ending March 31, 2021 Contingencies From time to time, the Company may not not not not 16, Disclosure of Fair Value of Financial Instruments The Company’s financial instruments consist principally of cash and cash equivalents, accounts receivable, marketable securities, accounts payable, accrued expenses, warrants to purchase shares of common stock, and derivatives. The carrying amounts of cash and cash equivalents, accounts receivable, short-term debt, accounts payable, and accrued expenses due to their short nature approximate fair value at March 31, 2020 2019 12 1 3 5,

Note 3 - Revenue Recognition

Note 3 - Revenue Recognition	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	3. The Company’s revenues in its Grid segment are derived primarily through enabling the transmission and distribution of power, providing planning services that allow it to identify power grid needs and risks, and developing ship protection systems for the U.S. Navy. The Company’s revenues in its Wind segment are derived primarily through supplying advanced power electronics and control systems, licensing its highly engineered wind turbine designs, and providing extensive customer support services to wind turbine manufacturers. The Company records revenue based on a five 606. March 31, 2020 72 In the Company's equipment and system product line, each contract with a customer summarizes each product sold to a customer, which typically represents distinct performance obligations. A contract's transaction price is allocated to each distinct performance obligation using the respective standalone selling price which is determined primarily using the cost plus expected margin approach and recognized as revenue when, or as, the performance obligation is satisfied. The majority of the Company’s product sales transfer control to the customer in line with the contracted delivery terms and revenue is recorded at the point in time when title and risk transfer to the customer, as the Company has determined that this is the point in time that control transfers to the customer. The Company's equipment and system product line includes certain contracts which do not not 606. not 606 March 31, 2020 6.4 no March 31, 2019 In the Company's service and technology development product line, there are several different types of transactions and each begins with a contract with a customer that summarizes each product sold to a customer, which typically represents distinct performance obligations. The technology development transactions are primarily for activities that have no not not not 606, no The Company's service contracts can include a purchase order from a customer for specific goods in which each item is a distinct performance obligation satisfied at a point in time at which control of the goods is transferred to the customer which occurs based on the contracted delivery terms or when the requested service work has been completed. The transaction price for these goods is allocated based on the adjusted market approach considering similar transactions under similar circumstances. Service contracts are also derived from ongoing maintenance contracts and extended service-type warranty contracts. In these transactions, the Company is contracted to provide an ongoing service over a specified period of time. As the customer is consuming the benefits as the service is being provided the revenue is recognized over time ratably. The Company’s policy is to not The Company provides assurance-type warranties on all product sales for a term of typically one three four The Company records revenue net of sales tax, value added tax, excise tax and other taxes collected concurrent with revenue-producing activities. The Company has elected to recognize the cost for freight and shipping when control over the products sold passes to customers and revenue is recognized. The Company has elected to recognize incremental costs of obtaining a contract as expense when incurred except in contracts where the amortization period would exceed twelve not twelve The Company’s contracts with customers do not may 30 60 The following tables disaggregate the Company’s revenue by product line and by shipment destination: Year Ended March 31, 2020 Product Line: Grid Wind Equipment and systems $ 44,065 $ 12,282 Services and technology development 5,520 1,971 Total $ 49,585 $ 14,253 Region: Americas $ 33,207 $ 87 Asia Pacific 10,407 13,996 EMEA 5,971 170 Total $ 49,585 $ 14,253 Year Ended March 31, 2019 Product Line: Grid Wind Equipment and systems $ 26,645 $ 19,287 Services and technology development 7,645 2,630 Total $ 34,290 $ 21,917 Region: Americas $ 22,811 $ 112 Asia Pacific 7,267 21,200 EMEA 4,212 605 Total $ 34,290 $ 21,917 In the fiscal years ended March 31, 2020 2019 51% 74% As of March 31, 2020 March 31, 2019 ferred program costs” (see Note 6, 7, Unbilled AR Deferred Program Costs Contract Liabilities Beginning balance as of March 31, 2019 $ 2,213 $ 318 $ 15,521 Increases for costs incurred to fulfill performance obligations — 4,844 — Increase (decrease) due to customer billings (11,516 ) — 47,877 Decrease due to cost recognition on completed performance obligations — (3,525 ) — Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations 15,017 — (37,009 ) Other changes and FX impact (3 ) (6 ) (247 ) Ending balance as of March 31, 2020 $ 5,711 $ 1,631 $ 26,142 Unbilled AR Deferred Program Costs Contract Liabilities Beginning balance as of March 31, 2018 $ 3,016 $ 2,567 $ 21,937 Impact of adoption of ASC 606 — (1,599 ) (2,657 ) Increases for costs incurred to fulfill performance obligations — 1,585 — Increase (decrease) due to customer billings (12,076 ) — 20,540 Decrease due to cost recognition on completed performance obligations — (2,212 ) — Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations 11,324 (9 ) (23,084 ) Other changes and FX impact (51 ) (14 ) (1,215 ) Ending balance as of March 31, 2019 $ 2,213 $ 318 $ 15,521 The Company’s remaining performance obligations represent the unrecognized revenue value of the Company’s contractual commitments. The Company’s performance obligations may March 31, 2020 606 twelve 61.4 8.2 thirteen sixty twelve twelve first three twelve twelve not not 1, May 29, 2020 The following table sets forth customers who represented 10% March 31, 2020 2019 Year Ended Reportable March 31, Segment 2020 2019 Department of Homeland Security Grid 10% <10% Vestas Grid <10% 15% Inox Wind Limited Wind <10% 34%

Note 4 - Goodwill

Note 4 - Goodwill	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Goodwill Disclosure [Text Block]	4. The Company performed its annual assessment of goodwill on February 28, 2020 no March 31, 2020 no no March 31, 2019

Note 5 - Fair Value Measurement

Note 5 - Fair Value Measurements	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Fair Value Disclosures [Text Block]	5. A valuation hierarchy for disclosure of the inputs to valuation used to measure fair value has been established. This hierarchy prioritizes the inputs into three Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. Level 2 - Inputs include quoted prices for similar assets and liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not Level 3 - Unobservable inputs that reflect the Company’s assumptions that market participants would use in pricing the asset or liability. The Company develops these inputs based on the best information available, including its own data. The Company provides a gross presentation of activity within Level 3 1 2 1 2 3 not 1, 2 3 March 31, 2020 A financial asset’s or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. Valuation Techniques Cash Equivalents Cash equivalents consist of highly liquid instruments with maturities of three 1 Marketable Securities Marketable securities consist of certificates of deposit with maturities of greater than 12 1 $0.1 March 31, 2020 not March 31, 2019. Warrants The Company issued warrants in conjunction with an equity offering to Hudson Bay Capital in November 2014 April 8, 2019. November 13, 2019 November 13, 2019. March 31, 2020 no The Company historically relied on various assumptions in a lattice model to determine the fair value of warrants. The Company had valued the warrants within Level 3 12, The following table provides the assets and liabilities carried at fair value on a recurring basis, measured as of March 31, 2020 2019 Total Carrying Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) March 31, 2020: Assets: Cash equivalents $ 19,394 $ 19,394 $ — $ — Marketable securities $ 35,195 $ 35,195 $ — $ — Total Carrying Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) March 31, 2019: Assets: Cash equivalents $ 41,839 $ 41,839 $ — $ — Derivative liabilities: Warrants $ 4,942 $ — $ — $ 4,942 The table below reflects the activity for the Company’s major classes of liabilities measured at fair value on a recurring basis (in thousands): Warrants April 1, 2019 $ 4,942 Mark to market adjustment (4,648 ) Exercise of in-the-money warrants (294 ) March 31, 2020 $ - Warrants April 1, 2018 $ 1,217 Mark to market adjustment 3,725 March 31, 2019 $ 4,942

Note 6 - Accounts Receivable

Note 6 - Accounts Receivable	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Accounts Receivable [Text Block]	6. Accounts receivable at March 31, 2020 March 31, 2019 March 31, 2020 March 31, 2019 Accounts receivable (billed) $ 11,276 $ 5,642 Accounts receivable (unbilled) 5,711 2,213 Accounts receivable $ 16,987 $ 7,855

Note 7 - Inventory

Note 7 - Inventory	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Inventory Disclosure [Text Block]	7. Inventory, net of reserves, at March 31, 2020 March 31, 2019 March 31, 2020 March 31, 2019 Raw materials $ 10,739 $ 5,474 Work-in-process 1,345 1,922 Finished goods 5,260 4,405 Deferred program costs 1,631 318 Inventory $ 18,975 $ 12,119 The Company recorded inventory write-downs of $ 1.3 $0.9 March 31, 2020 2019 Deferred program costs as of March 31, 2020 March 31, 2019

Note 8 - Note Receivable

Note 8 - Note Receivable	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Notes Receivable [Text Block]	8. AMSC entered into a purchase and sale agreement dated February 1, 2018 64 64 $23.0 $1.0 $6.0 The note receivable was due in two $3.0 1.96% first March 28, 2019 second May 23, 2019. $5.7 6%, $0.3 March 31, 2019, $0.1 In addition, the resulting gain of $0.1 2017 05 2014 09. April 1, 2018. Note receivable as of March 31, 2019 March 31, 2019 Current assets Note receivable, current $ 3,000 Note receivable discount (112 ) Total current note receivable $ 2,888 Long term assets Note receivable, long term $ — Note receivable discount — Deferred gain on sale — Total long term note receivable $ —

Note 9 - Property, Plant and Eq

Note 9 - Property, Plant and Equipment	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	9. The cost and accumulated depreciation of property and equipment at March 31, 2020 2019 March 31, 2020 March 31, 2019 Construction in progress - equipment $ 3,130 $ 603 Equipment and software 41,737 45,705 Furniture and fixtures 1,302 1,269 Leasehold improvements 2,477 1,955 Property, plant and equipment, gross 48,646 49,532 Less accumulated depreciation (40,081 ) (40,560 ) Property, plant and equipment, net $ 8,565 $ 8,972 Depreciation expense was $ 4.0 $4.3 March 31, 2020 2019

Note 10 - Intangible Assets

Note 10 - Intangible Assets	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Intangible Assets Disclosure [Text Block]	10. Intangible assets at March 31, 2020 2019 2020 2019 Gross Amount Accumulated Amortization Net Book Value Gross Amount Accumulated Amortization Net Book Value Estimated Useful Life Core technology and know-how $ 5,970 $ (2,420 ) $ 3,550 $ 4,970 $ (2,080 ) $ 2,890 5-10 The Company recorded intangible amortization expense of $ 0.3 $0.3 March 31, 2020 2019 Expected future amortization expense related to intangible assets is as follows (in thousands): Fiscal years ending March 31, Total 2021 $ 483 2022 483 2023 483 2024 483 2025 483 Thereafter 1,135 Total $ 3,550 The geographic composition of intangible assets is as follows (in thousands): March 31, 2020 2019 Intangible assets by geography: U.S. $ 3,550 $ 2,890 Total $ 3,550 $ 2,890 The business segment composition of intangible assets is as follows (in thousands): March 31, 2020 2019 Intangible assets by business segments: Grid $ 3,550 $ 2,890 Total $ 3,550 $ 2,890

Note 11 - Accounts Payable and

Note 11 - Accounts Payable and Accrued Expenses	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	11. Accounts payable and accrued expenses at March 31, 2020 March 31, 2019 consisted March 31, 2020 March 31, 2019 Accounts payable $ 10,045 $ 2,939 Accrued inventories in-transit 763 244 Accrued other miscellaneous expenses 1,986 1,759 Advanced deposits 666 631 Accrued compensation 5,683 5,404 Income taxes payable 933 3,363 Accrued product warranty 2,015 1,545 Total $ 22,091 $ 15,885 The Company generally provides a one three Product warranty activity was as follows (in thousands): Fiscal Years Ended March 31, 2020 2019 Balance at beginning of period $ 1,545 $ 1,769 Change in accruals for warranties during the period 542 727 Settlements during the period (72 ) (951 ) Balance at end of period $ 2,015 $ 1,545

Note 12 - Warrants and Derivati

Note 12 - Warrants and Derivative Liabilities	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	12. The Company accounts for its warrants as liabilities due to certain adjustment provisions within the instruments, which require that they be recorded at fair value. The warrants are subject to revaluation at each balance sheet date and any change in fair value is recorded as a change in fair value of warrants until the earlier of its expiration or its exercise at which time the warrant liability will be reclassified to equity. The Company calculated the fair value of the warrants utilizing an integrated lattice model. See Note 5, Hercules Warrant The Company issued Hercules warrants to purchase 13,927 25,641 December 19, 2014, second 58,823 $7.85 May 2017, September 2017 January 2017. $0.4 March 31, 2019 $0.1 March 31, 2018. April 8, 2019 22,821 April 17, 2019. $0.1 March 31, 2020. $0.2 March 31, 2019. November 2014 On November 13, 2014, 909,090 one 0.9 one 818,181 “November 2014 November 2014 $7.81 November 13, 2019, November 2014 786,000 $7.81 32,181 November 13, 2019. $4.6 November 2014 March 31, 2020 November 2014 $3.5 March 31, 2019 March 31, 2020 no Following is a summary of the key assumptions used to calculate the fair value of the November 2014 September 30, June 30, Fiscal Year 2019 2019 2019 Risk-free interest rate 1.90% 2.11% Expected annual dividend yield — — Expected volatility 62.84% 60.58% Term (years) 0.12 0.37 Fair value $0.6 million $1.7 million March 31, December 31, September 30, June 30, March 31, Fiscal Year 2018 2019 2018 2018 2018 2018 Risk-free interest rate 2.43% 2.61% 2.62% 2.40% 2.20% Expected annual dividend yield — — — — — Expected volatility 75.61% 70.29% 63.66% 67.40% 65.86% Term (years) 0.62 0.87 1.12 1.37 1.62 Fair value $4.6 million $3.6 million $1.3 million $1.6 million $1.1 million

Note 13 - Income Taxes

Note 13 - Income Taxes	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Income Tax Disclosure [Text Block]	13. (Loss) income before income taxes for the fiscal years ended March 31, 2020 2019 follows Fiscal years ended March 31, 2020 2019 Income/(Loss) before income tax expense: U.S. $ (18,260 ) $ (24,289 ) Foreign 1,359 57,430 Total $ (16,901 ) $ 33,141 The components of income tax expense (benefit) attributable to continuing operations consist of the following (in thousands): Fiscal years ended March 31, 2020 2019 Current Federal $ 1,814 $ 1,246 Foreign 95 4,399 Total current 1,909 5,645 Deferred Federal (1,524 ) 1,588 Foreign (190 ) (853 ) Total deferred (1,714 ) 735 Income tax expense $ 195 $ 6,380 The reconciliation between the statutory federal income tax rate and the Company’s effective income tax rate is shown below. Fiscal years ended March 31, 2020 2019 Statutory federal income tax rate (21 )% (21 )% Foreign income tax rate differential 2 4 True-up of NOLs 1 (60 ) GILTI 1 37 Other (6 ) 3 Valuation allowance 24 92 Effective income tax rate 1 % (19 )% The following is a summary of the principal components of the Company’s deferred tax assets and liabilities (in thousands): March 31, 2020 March 31, 2019 Deferred tax assets: Net operating loss carryforwards $ 195,504 $ 181,657 Research and development and other tax credit carryforwards 13,244 13,046 Accruals and reserves 5,352 14,781 Fixed assets and intangible assets 1,697 1,553 Other 1,565 2,785 Gross deferred tax assets 217,362 213,822 Valuation allowance (199,989 ) (196,340 ) Total deferred tax assets 17,373 17,482 Deferred tax liabilities: Intercompany Debt (14,365 ) (16,028 ) Other (1,637 ) (1,794 ) Total deferred tax liabilities (16,002 ) (17,822 ) Net deferred tax asset $ 1,371 $ (340 ) On March 27, 2020, 19. 19 five 2017. not The Company has provided a full valuation allowance against its net deferred income tax assets in the U.S. and China since it is more likely than not not $200.0 March 31, 2020 not At March 31, 2020 $799.2 $203.6 March 31, 2020 2040. $54.0 $3.7 $0.3 $10.1 $3.5 March 31, 2020 2040. At March 31, 2020 $56.0 five December 31, 2020. Section 382 1986, may $0.3 March 31, 2018 382 not The total amount of undistributed foreign earnings available to be repatriated at March 31, 2020 $1.9 $0.2 The Company has not not Accounting for income taxes requires a two first not second 50% not not March 31, 2020 not March 31, 2020 2019 There were no March 31, 2020 2019 The Company accounts for interest and penalties related to uncertain tax positions as part of its provision for federal and state income taxes. Any unrecognized tax benefits, if recognized, would favorably affect its effective tax rate in any future period. The Company does not twelve The Company conducts business globally and, as a result, its subsidiaries file income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. Major tax jurisdictions include the U.S., China, Romania and Austria. All U.S. income tax filings for fiscal years ended March 31, 1996 2020 All fiscal years from the fiscal year ended March 31, 2018 2020 March 31, 2020 2015 March 31, 2016 2020

Note 14 - Leases

Note 14 - Leases	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	14. On April 1, 2019, 2016 02, Leases (Topic 842 842" not not not As a result of the adoption of ASC 842, $3.8 $3.8 no 842. No March 31, 2019 ASC 842 Adjustment April 1, 2019 Operating Leases: Right of use asset $ — $ 3,795 $ 3,795 Total operating lease right-of-use asset — 3,795 3,795 Operating lease liabilities – ST $ — $ 309 $ 309 Operating lease liabilities – LT — 3,512 3,512 Total operating lease liabilities — 3,821 3,821 Weighted-average remaining lease term 7.69 years Weighted-average discount rate 7.06 % All significant lease arrangements are recognized at lease commencement. Operating lease right–of-use assets and lease liabilities are recognized at commencement. The operating lease right-of-use asset includes any lease payments related to initial direct cost and prepayments and excludes any lease incentives. Lease expense is recognized on a straight-line basis over the lease term. The Company enters into a variety of operating lease agreements through the normal course of its business, but primarily real estate leases to support its operations. The agreements generally provide for fixed minimum rental payments and the payment of real estate taxes and insurance. Many of these leases have one five The Company also enters into leases for vehicles, IT equipment and service agreements, and other leases related to its manufacturing operations that are also included in the right-of-use asset and lease liability accounts if they are for a term of longer than twelve The discount rate was calculated using an incremental borrowing rate based on an assessment prepared by the Company through the use of Company credit ratings, consideration of its lease populations potential risk to its total capital structure, and a market rate for a collateralized loan for its risk profile, calculated by a third The Company did not Supplemental balance sheet information related to leases at March 31, 2020 March 31, 2020 Operating Leases: Right-of-use assets $ 3,359 Total right-of-use assets 3,359 Lease liabilities - ST $ 439 Lease liabilities - LT 3,000 Total operating lease liabilities $ 3,439 Weighted-average remaining lease term 6.91 years Weighted-average discount rate 7.08 % The costs related to the Company's leases for the year ended March 31, 2020 Year ended March 31, 2020 Operating Lease: Operating lease costs - fixed $ 713 Operating lease costs - variable 100 Short-term lease costs 544 Total lease costs $ 1,357 The Company’s estimated minimum future lease obligations under the Company's leases are as follows: Operating Leases Year ended March 31, 2021 $ 665 2022 647 2023 621 2024 559 2025 501 Thereafter 1,394 Total minimum lease payments 4,387 Less: interest (948 ) Present value of lease liabilities $ 3,439

Note 15 - Stockholders' Equity

Note 15 - Stockholders' Equity	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	15. Stock-Based Compensation Plans As of March 31, 2020 two 2007 “2007 2007 “2007 August 1, 2019, 2007 2007 2007 2007 3,400,000 4,600,000 2007 2007 230,000 280,000 The 2007 422 1986, no 10 3 5 3 The 2007 not 2007 $40,000 two $40,000 three As of March 31, 2020 2007 1,249,930 2007 108,474 Stock-Based Compensation The components of stock-based compensation for the years ended March 31, 2020 2019 Fiscal years ended March 31, 2020 2019 Stock options $ 16 $ 221 Restricted stock and stock awards 1,870 2,781 Employee stock purchase plan 36 28 Total stock-based compensation expense $ 1,922 $ 3,030 The estimated fair value of the Company’s stock-based awards, less expected annual forfeitures, is amortized over the awards’ service period. The total unrecognized compensation cost for unvested outstanding stock options was $ 0.1 March 31, 2020 1.2 3.4 March 31, 2020 1.6 The following table summarizes stock-based compensation expense by financial statement line item for the fiscal years ended March 31, 2020 2019 Fiscal years ended March 31, 2020 2019 Cost of revenues $ 66 $ 116 Research and development 333 365 Selling, general and administrative 1,522 2,549 Total $ 1,922 $ 3,030 The following table summarizes the information concerning currently outstanding and exercisable employee and non-employee options: Options / Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term Aggregate Intrinsic Value (thousands) Outstanding at March 31, 2019 164,265 $ 96.30 Granted 5,939 11 Canceled/forfeited (29,923 ) 296.62 Outstanding at March 31, 2020 140,281 $ 49.95 2.91 $ — Exercisable at March 31, 2020 134,342 $ 51.68 2.9 $ — Fully vested and expected to vest at March 31, 2020 140,061 $ 50.01 2.63 $ — The Company granted options to purchase 5,939 March 31, 2020 not three twelve March 31, 2019 March 31, 2020 2 March 31, 2020 Fiscal years ended March 31, 2020 2019 Expected volatility 66.5 % N/A Risk-free interest rate 1.8 % N/A Expected life (years) 5.91 N/A Dividend yield None N/A The following table summarizes the employee and non-employee restricted stock activity for the year ended March 31, 2020 Shares Weighted Average Grant Date Fair Value Intrinsic Aggregate Value (thousands) Outstanding at March 31, 2019 953,948 $ 5.26 Granted 389,174 8.74 Vested (332,375 ) 6.21 Forfeited (28,500 ) 7.22 Outstanding at March 31, 2020 982,247 $ 6.26 $ 5,383 The total fair value of restricted stock that was granted during the fiscal years ended March 31, 2020 2019 $3.4 $3.6 March 31, 2020 2019 $2.9 $2.6 There we r 94,500 March 31, 2020 57,000 March 31, 2019 28,500 28,500 2019. The remaining shares awarded vest upon the passage of time. For awards that vest upon the passage of time, expense is being recorded over the vesting period. Employee Stock Purchase Plan The Company maintains the 2000 15% March 31, 2020 203,134 $0.1 March 31, 2020 2019

Note 16 - Commitments and Conti

Note 16 - Commitments and Contingencies	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	16. Purchase Commitments The Company periodically enters into non-cancelable purchase contracts in order to ensure the availability of materials to support production of its products. Purchase commitments represent enforceable and legally binding agreements with suppliers to purchase goods or services. The Company periodically assesses the need to provide for impairment on these purchase contracts and record a loss on purchase commitments when required. Lease Commitments During the year ended March 31, 2020 14, March 31, 2019 $1.3 2, Legal Contingencies From time to time, the Company is involved in legal and administrative proceedings and claims of various types. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. The Company reviews these estimates each accounting period as additional information is known and adjusts the loss provision when appropriate. If a matter is both probable to result in a liability and the amounts of loss can be reasonably estimated, the Company estimates and discloses the possible loss or range of loss to the extent necessary to make the consolidated financial statements not not not Other The Company enters into long-term construction contracts with customers that require the Company to obtain performance bonds. The Company is required to deposit an amount equivalent to some or all the face amount of the performance bonds into an escrow account until the termination of the bond. When the performance conditions are met, amounts deposited as collateral for the performance bonds are returned to the Company. In addition, the Company has various contractual arrangements in which minimum quantities of goods or services have been committed to be purchased on an annual basis. As of March 31, 2020 5.7 0.5 $5.0

Note 17 - Employee Benefit Plan

Note 17 - Employee Benefit Plans	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Retirement Benefits [Text Block]	17. The Company has implemented a defined contribution plan (the “Plan”) under Section 401 50% first 6% $0.3 March 31, 2020 $0.3 March 31, 2019

Note 18 - Restructuring

Note 18 - Restructuring	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Restructuring and Related Activities Disclosure [Text Block]	18. The Company accounts for charges resulting from operational restructuring actions in accordance with ASC Topic 420, Exit or Disposal Cost Obligations 420” 712, Compensation—Nonretirement Postemployment Benefits 712” The $0.5 March 31, 2019 first 2018 The following table presents restructuring charges and cash payments during the year ended March 31, 2019 ( Severance pay and benefits Facility exit and Relocation costs Total Accrued restructuring balance at April 1, 2018 $ 262 $ 173 $ 435 Charges to operations — 450 450 Cash payments (262 ) (623 ) (885 ) Accrued restructuring balance at March 31, 2019 $ — $ — $ — All restructuring charges discussed above are included within restructuring in the Company’s consolidated statements of operations. The Company includes accrued restructuring within accounts payable and accrued expenses in the consolidated balance sheets. There was no March 31, 2020 March 31, 2020 2019

Note 19 - Business Segments

Note 19 - Business Segments	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	19. The Company reports its financial results in two Through the Company’s power grid offerings, the Grid business segment enables electric utilities, industrial facilities, and renewable energy project developers to connect, transmit and distribute smarter, cleaner and better power through its transmission planning services, power electronics, and superconductor-based systems. The sales process is enabled by transmission planning services that allow it to identify power grid congestion, poor power quality and other risks, which helps the Company determine how its solutions can improve network performance. These services often lead to sales of grid interconnection solutions for wind farms and solar power plants, power quality systems, and transmission and distribution cable systems. The Company also sells ship protection products to the U.S. Navy through its Grid business segment. Through the Company’s wind power offerings, the Wind business segment enables manufacturers to field highly competitive wind turbines through its advanced power electronics and control system products, engineered designs, and support services. The Company supplies advanced power electronics and control systems, licenses its highly engineered wind turbine designs, and provides extensive customer support services to wind turbine manufacturers. The Company’s design portfolio includes a broad range of drive trains and power ratings of 2 The operating two Fiscal Years Ended March 31, 2020 2019 Revenues: Grid $ 49,585 $ 34,290 Wind 14,253 21,917 Total $ 63,838 $ 56,207 Fiscal Years Ended March 31, 2020 2019 Operating income (loss): Grid $ (13,508 ) $ (10,600 ) Wind (7,699 ) 48,103 Unallocated corporate expenses (1,922 ) (3,480 ) Total $ (23,129 ) $ 34,023 Total assets for the two March 31, 2020 March 31, 2019 March 31, 2020 March 31, 2019 Grid $ 44,044 $ 31,075 Wind 14,250 8,167 Corporate assets 65,815 80,088 Total $ 124,109 $ 119,330 The accounting policies of the business segments are the same as those for the consolidated Company. The Company’s business segments have been determined in accordance with the Company’s internal management structure, which is organized based on operating activities. The Company evaluates performance based upon several factors, of which the primary financial measures are segment revenues and segment operating income (loss). The disaggregated financial results of the segments reflect allocation of certain functional expense categories consistent with the basis and manner in which Company management internally disaggregates financial information for the purpose of assisting in making internal operating decisions. In addition, certain corporate expenses which the Company does not two Unallocated corporate expenses primarily consist of stock-based compensation expense of $ 1.9 $3.0 March 31, 2020 2019 $0.5 March 31, 2019 Geographic information about property, plant and equipment associated with particular regions is as follows (in thousands): March 31, 2020 2019 North America $ 8,113 $ 8,555 Europe 397 345 Asia Pacific 55 72 Total $ 8,565 $ 8,972

Note 20 - Recent Accounting Pro

Note 20 - Recent Accounting Pronouncements	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	20. In June 2016, 2016 13, Financial Instruments-Credit Losses (Topic 326 2016 13 December 15, 2019, 2019 10 November 2019, December 15, 2022. 2016 13 may In July 2017, 2017 11, Earnings per Share (Topic 260 Distinguishing Liabilities from Equity (Topic 480 815 2017 11 no e. The ASU is effective for annual reporting periods beginning after December 15, 2018, April 1, 2019 2017 11 no 840. In August 2017, 2017 12, Derivatives and Hedging (Topic 815 . The amendments in ASU 2017 12 December 15, 2018, April 1, 2019 2017 12 no no In June 2018, 2018 08, Not 958 2018 08 1 958, Not 2 December 15, 2018, April 1, 2019, 2018 08 In August 2018, 2018 13, Fair Value Measurement (Topic 820 . The amendments in ASU 2018 13 December 15, 2019, not 3 not ASU2018 13. In December 2019, 2019 12, Income Taxes (Topic 740 2019 12 December 15, 2020, not 2019 12

Note 21 - Subsequent Events

Note 21 - Subsequent Events	12 Months Ended
	Mar. 31, 2020
Notes to Financial Statements
Subsequent Events [Text Block]	21. The Company has performed an evaluation of subsequent events through the time of filing this Annual Report on Form 10 1, no

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Nature of Business and Operations, Policy [Policy Text Block]	Nature of the Business and Operations American Superconductor Corporation (together with its subsidiaries, “AMSC®” or the “Company”) was founded on April 9, 1987. The Company’s consolidated financial statements have been prepared on a going concern basis in accordance with United States generally accepted accounting principles (“GAAP”) and the Securities and Exchange Commission’s (“SEC”) instructions to Form 10
Liquidity, Policy [Policy Text Block]	Liquidity The Company has historically experienced recurring operating losses and as of March 31, 2020 978.6 March 31, 2020 59.9 eleven eighteen March 31, 2020 16.5 On July 3, 2018, $57.5 two first $32.5 July 4, 2018, nine December 31, 2018, second $25.0 December 27, 2018. 2018 $52.7 On February 1, 2018, 64 64 $23.0 $17.0 $6.0 64 March 28, 2018, $16.9 1.96%. second second first $3.0 March 28, 2019 second $3.0 May 23, 2019. In December 2015, $210.0 three three May 29, 2020, €6.0 €6.0 ninety may The Company issued warrants in conjunction with an equity offering to Hudson Bay Capital ("Hudson") in November 2014 ( November 13, 2019 $7.81. $6.1 786,000 32,181 November 13, 2019. In March 2020, 19“ 19 19 not 19 may While the COVID- 19 19 may 19 may The Company believes that based on the information presented above and its annual management assessment, it has sufficient liquidity to fund its operations and capital expenditures for the next twelve March 31, 2020 19 may no
Consolidation, Policy [Policy Text Block]	Basis of Consolidation The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All significant intercompany balances and transactions are eliminated. Certain reclassifications of prior years’ amounts have been made to conform to the current year presentation. These reclassifications had no
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of financial statements in conformity with 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 may may
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash Equivalents Cash equivalents consist of highly liquid instruments with maturities of three 1
Marketable Securities, Policy [Policy Text Block]	Marketable Securities Marketable securities consist of certificates of deposit with maturities of greater than 12 1
Receivable [Policy Text Block]	Accounts Receivable Accounts receivable consist of amounts owed by commercial companies and government agencies. Accounts receivable are stated net of allowances for doubtful accounts. The Company’s accounts receivable relate principally to a limited number of customers. As of March 31, 2020 25%, 18%, 17% no 10% March 31, 2019 21% 3, 16% no 10% may may may
Inventory, Policy [Policy Text Block]	Inventory Inventories include material, direct labor and related manufacturing overhead, and are stated at the lower of cost, determined on a first first first first Program costs may At each balance sheet date, the Company evaluates its ending inventories for excess quantities and obsolescence. Inventories that management considers excess or obsolete are reserved. Management considers forecasted demand in relation to the inventory on hand, competitiveness of product offerings, market conditions and product life cycles when determining excess and obsolescence and net realizable value adjustments. Once inventory is written down and a new cost basis is established, it is not For the fiscal years ended March 31, 2020 2019 1.3 $0.9
Lessee, Leases [Policy Text Block]	Leases Leases include all agreements in which we obtain control of a physical asset. Leases are captured on the balance sheet as both a right of use asset and associated lease liability and are valued based on the commencement of our control of the asset, after being discounted by our incremental borrowing rate. Our lease portfolio is made up primarily of real estate leases for our various offices, but also include items such as vehicles, IT equipment and other miscellaneous tools and equipment needed for manufacturing. Our incremental borrowing rate was determined through an analysis to identify what rates we could obtain if we were to secure external financing for similar transactions, and includes considerations of both the market and our current credit ratings. An analysis is performed annually, or upon execution of any individually material agreement, to ensure that the rates being applied to newly acquired leases are still accurate. The majority of the Company's leases are classified as operating leases, and therefore the expense is captured in income from operations each period. We have elected to exclude all leases of less than twelve not
Property, Plant and Equipment, Policy [Policy Text Block]	Property, Plant and Equipment Property, plant and equipment are carried at cost less accumulated depreciation and amortization. The Company accounts for depreciation and amortization using the straight-line method to allocate the cost of property, plant and equipment over their estimated useful lives as follows: Asset Classification Estimated Useful Life in Years Machinery and equipment 3-10 Furniture and fixtures 3-5 Leasehold improvements Shorter of the estimated useful life or the remaining lease term Expenditures for maintenance and repairs are expensed as incurred. Upon retirement or other disposition of assets, the costs and related accumulated depreciation are eliminated from the accounts and the resulting gain or loss is reflected in operating expenses.
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]	Valuation of Long-Lived Assets The Company periodically evaluates its long-lived assets, consisting principally of fixed assets and amortizable intangible assets, for potential impairment. In accordance with the applicable accounting guidance for the treatment of long-lived assets, the Company reviews the carrying value of its long-lived assets or asset group that is held and used, including intangible assets subject to amortization, for impairment whenever events and circumstances indicate that the carrying value of the assets may not may not There were no March 31, 2020 2019
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]	Goodwill Goodwill represents the excess of cost over net assets of acquired businesses that are consolidated. The Company performs its annual assessment of goodwill on February 28th may not first not not not 4, The Company performed its annual assessment of goodwill on February 28, 2020 no March 31, 2020 no no March 31, 2019
Revenue [Policy Text Block]	Revenue Recognition Revenue contracts are defined as an arrangement that creates enforceable rights and obligations of both parties where collection of the contract price is deemed probable. five can occur at the time of delivery, installation or post-installation where applicable. The Company's equipment and system product line includes certain contracts which do not not 606. not 606 For certain arrangements, such as contracts to perform research and development, prototype development contracts and certain customized product sales, the Company records revenues using the over-time method, measured by the relationship of costs incurred to total estimated contract costs. Over-time revenue recognition accounting is predominantly used on certain turnkey power systems installations for electric utilities and long-term prototype development contracts with the U.S. government. The Company follows this method when any of the three no The Company enters into sales arrangements that may may Performance obligations are separated into more than one 1 2 The Company reviews SSP and the related margins at least annually. The Company’s license agreements provide either for the payment of contractually determined paid-up front license fees or milestone based payments in consideration for the grant of rights to manufacture and or sell products using its patented technologies or know-how. Some of these agreements provide for the release of the licensee from past and future intellectual property infringement claims. When the Company can determine that it has no may no not Existing customers are subject to ongoing credit evaluations based on payment history and other factors. If it is determined that collectability of any portion of the contract value is not not The Company has elected to record taxes collected from customers on a net basis and does not The Company’s contract assets and liabilities primarily relate to the timing differences between cash received from a customer in connection with contractual rights to invoicing and the timing of revenue recognition following completion of performance obligations. The Company's accounts receivable balance is made up entirely of customer contract related balances. See Note 3, 606, Revenue from Contracts with Customers
Standard Product Warranty, Policy [Policy Text Block]	Product Warranty Warranty obligations are incurred in connection with the sale of the Company’s products. The Company provides assurance-type warranties on all product sales for a term of typically one three four
Research and Development Expense, Policy [Policy Text Block]	Research and Development Costs Research and development costs are expensed as incurred.
Income Tax, Policy [Policy Text Block]	Income Taxes The Company’s provision for income taxes is comprised of a current and a deferred portion. The current income tax provision is calculated as the estimated taxes payable or refundable on tax returns for the current year. The deferred income tax provision is calculated for the estimated future tax effects attributable to temporary differences and carry-forwards using expected tax rates in effect in the years during which the differences are expected to reverse. Deferred income taxes are recognized for the tax consequences in future years of differences between the tax bases of assets and liabilities and their financial reporting amounts at each fiscal year end based on enacted tax laws and statutory tax rates applicable to the periods in which the differences are expected to affect taxable income. Valuation allowances are established when necessary to reduce net deferred tax assets to the amount expected to be realized. The Company has provided a valuation allowance against its U.S. and China deferred income tax assets since the Company believes that it is more likely than not not Accounting for income taxes requires a two first not second 50% not 13,
Share-based Payment Arrangement [Policy Text Block]	Stock-Based Compensation The Company accounts for stock-based payment transactions using a fair value-based method and recognizes the related expense in the results of operations. Stock-based compensation is estimated at the grant date based on the fair value of the award and is recognized as expense over the requisite service period of the award. The fair value of restricted stock awards is determined by reference to the fair market value of the Company’s common stock on the date of grant. The Company uses the Black-Scholes option pricing model to estimate the fair value of awards with service and performance conditions. For awards with service conditions only, the Company recognizes compensation cost on a straight-line basis over the requisite service/vesting period. For awards with performance conditions, accruals of compensation cost are made based on the probable outcome of the performance conditions. The cumulative effect of changes in the probability outcomes are recorded in the period in which the changes occur. Determining the appropriate fair value model and related assumptions requires judgment, including estimating stock price volatilities of the Company’s common stock and expected terms. The expected volatility rates are estimated based on historical and implied volatilities of the Company’s common stock. The expected term represents the average time that the options that vest are expected to be outstanding based on the vesting provisions and the Company’s historical exercise, cancellation and expiration patterns. The Company estimates pre-vesting forfeitures when recognizing compensation expense based on historical and forward-looking factors. Changes in estimated forfeiture rates and differences between estimated forfeiture rates and actual experience may may The Company accounts in the same manner as other share-based payments for employees, with the measurement being based on the fair value at the grant date. The non-employee share based payments will be included within the Company's stock compensation currently reported.
Earnings Per Share, Policy [Policy Text Block]	Computation of Net Income (Loss) per Common Share Basic net income (loss) per share (“EPS”) is computed by dividing net loss by the weighted-average number of common shares outstanding for the period. Diluted EPS is computed by dividing the net loss by the weighted-average number of common shares and dilutive common equivalent shares outstanding during the period, calculated using the treasury stock method. Common equivalent shares include the effect of restricted stock, exercise of stock options and warrants and contingently issuable shares. For the fiscal years ended March 31, 2020 2019 354,748, 907,988, not reconciles March 31, 2020 2019 Fiscal year ended March 31, 2020 2019 Numerator: Net income (loss) $ (17,096 ) $ 26,761 Less: decrease in fair value of warrants, net of income tax (4,648 ) — Plus: change in fair value due to exercise of warrants 83 — Net income (loss) - diluted $ (21,662 ) $ 26,761 Denominator: Weighted-average shares of common stock outstanding 21,937 21,265 Weighted-average shares subject to repurchase (953 ) (930 ) Shares used in per-share calculation ― basic 20,985 20,335 Common stock awards — 391 Common stock warrants 84 — Shares used in per-share calculation ― diluted 21,069 20,726 Net income (loss) per share ― basic $ (0.81 ) $ 1.32 Net income (loss) per share ― diluted $ (1.03 ) $ 1.29
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency Translation The functional currency of all the Company’s foreign subsidiaries is the U.S. dollar, except for AMSC Austria, for which the local currency (Euro) is the functional currency, and AMSC China, for which the local currency (Renminbi) is the functional currency. The assets and liabilities of AMSC Austria and AMSC China are translated into U.S. dollars at the exchange rate in effect at the balance sheet date and income and expense items are translated at average rates for the period. Cumulative translation adjustments are excluded from net loss (income) and shown as a separate component of stockholders’ equity. Net foreign currency gains and losses are included in other income (expense), net on the consolidated statements of operations and were $ 0.1 $1.6 March 31, 2020 2019 no
Risks and Uncertainties [Policy Text Block]	Risks and Uncertainties The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could materially differ from those estimates and would impact future results of operations and cash flows. The Company invests its available cash in high credit, quality financial instruments and invests primarily in investment-grade marketable securities, including, but not Several of the Company’s government contracts are being funded incrementally, and as such, are subject to the future authorization, appropriation, and availability of government funding. The Company has a history of successfully obtaining financing under incrementally-funded contracts with the U.S. government and it expects to continue to obtain additional contract modifications in the year ending March 31, 2021
Commitments and Contingencies, Policy [Policy Text Block]	Contingencies From time to time, the Company may not not not not 16,
Fair Value of Financial Instruments, Policy [Policy Text Block]	Disclosure of Fair Value of Financial Instruments The Company’s financial instruments consist principally of cash and cash equivalents, accounts receivable, marketable securities, accounts payable, accrued expenses, warrants to purchase shares of common stock, and derivatives. The carrying amounts of cash and cash equivalents, accounts receivable, short-term debt, accounts payable, and accrued expenses due to their short nature approximate fair value at March 31, 2020 2019 12 1 3 5,

Note 2 - Summary of Significa_2

Note 2 - Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Property Plant and Equipment Useful Life [Table Text Block]	Asset Classification Estimated Useful Life in Years Machinery and equipment 3-10 Furniture and fixtures 3-5 Leasehold improvements Shorter of the estimated useful life or the remaining lease term
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Fiscal year ended March 31, 2020 2019 Numerator: Net income (loss) $ (17,096 ) $ 26,761 Less: decrease in fair value of warrants, net of income tax (4,648 ) — Plus: change in fair value due to exercise of warrants 83 — Net income (loss) - diluted $ (21,662 ) $ 26,761 Denominator: Weighted-average shares of common stock outstanding 21,937 21,265 Weighted-average shares subject to repurchase (953 ) (930 ) Shares used in per-share calculation ― basic 20,985 20,335 Common stock awards — 391 Common stock warrants 84 — Shares used in per-share calculation ― diluted 21,069 20,726 Net income (loss) per share ― basic $ (0.81 ) $ 1.32 Net income (loss) per share ― diluted $ (1.03 ) $ 1.29

Note 3 - Revenue Recognition (T

Note 3 - Revenue Recognition (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Disaggregation of Revenue [Table Text Block]	Year Ended March 31, 2020 Product Line: Grid Wind Equipment and systems $ 44,065 $ 12,282 Services and technology development 5,520 1,971 Total $ 49,585 $ 14,253 Region: Americas $ 33,207 $ 87 Asia Pacific 10,407 13,996 EMEA 5,971 170 Total $ 49,585 $ 14,253 Year Ended March 31, 2019 Product Line: Grid Wind Equipment and systems $ 26,645 $ 19,287 Services and technology development 7,645 2,630 Total $ 34,290 $ 21,917 Region: Americas $ 22,811 $ 112 Asia Pacific 7,267 21,200 EMEA 4,212 605 Total $ 34,290 $ 21,917
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]	Unbilled AR Deferred Program Costs Contract Liabilities Beginning balance as of March 31, 2019 $ 2,213 $ 318 $ 15,521 Increases for costs incurred to fulfill performance obligations — 4,844 — Increase (decrease) due to customer billings (11,516 ) — 47,877 Decrease due to cost recognition on completed performance obligations — (3,525 ) — Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations 15,017 — (37,009 ) Other changes and FX impact (3 ) (6 ) (247 ) Ending balance as of March 31, 2020 $ 5,711 $ 1,631 $ 26,142 Unbilled AR Deferred Program Costs Contract Liabilities Beginning balance as of March 31, 2018 $ 3,016 $ 2,567 $ 21,937 Impact of adoption of ASC 606 — (1,599 ) (2,657 ) Increases for costs incurred to fulfill performance obligations — 1,585 — Increase (decrease) due to customer billings (12,076 ) — 20,540 Decrease due to cost recognition on completed performance obligations — (2,212 ) — Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations 11,324 (9 ) (23,084 ) Other changes and FX impact (51 ) (14 ) (1,215 ) Ending balance as of March 31, 2019 $ 2,213 $ 318 $ 15,521
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	Year Ended Reportable March 31, Segment 2020 2019 Department of Homeland Security Grid 10% <10% Vestas Grid <10% 15% Inox Wind Limited Wind <10% 34%

Note 5 - Fair Value Measureme_2

Note 5 - Fair Value Measurements (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]	Total Carrying Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) March 31, 2020: Assets: Cash equivalents $ 19,394 $ 19,394 $ — $ — Marketable securities $ 35,195 $ 35,195 $ — $ — Total Carrying Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) March 31, 2019: Assets: Cash equivalents $ 41,839 $ 41,839 $ — $ — Derivative liabilities: Warrants $ 4,942 $ — $ — $ 4,942
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]	Warrants April 1, 2019 $ 4,942 Mark to market adjustment (4,648 ) Exercise of in-the-money warrants (294 ) March 31, 2020 $ - Warrants April 1, 2018 $ 1,217 Mark to market adjustment 3,725 March 31, 2019 $ 4,942

Note 6 - Accounts Receivable (T

Note 6 - Accounts Receivable (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Accounts Receivable [Table Text Block]	March 31, 2020 March 31, 2019 Accounts receivable (billed) $ 11,276 $ 5,642 Accounts receivable (unbilled) 5,711 2,213 Accounts receivable $ 16,987 $ 7,855

Note 7 - Inventory (Tables)

Note 7 - Inventory (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Inventory, Current [Table Text Block]	March 31, 2020 March 31, 2019 Raw materials $ 10,739 $ 5,474 Work-in-process 1,345 1,922 Finished goods 5,260 4,405 Deferred program costs 1,631 318 Inventory $ 18,975 $ 12,119

Note 8 - Note Receivable (Table

Note 8 - Note Receivable (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Notes Receivable [Table Text Block]	March 31, 2019 Current assets Note receivable, current $ 3,000 Note receivable discount (112 ) Total current note receivable $ 2,888 Long term assets Note receivable, long term $ — Note receivable discount — Deferred gain on sale — Total long term note receivable $ —

Note 9 - Property, Plant and _2

Note 9 - Property, Plant and Equipment (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Property, Plant and Equipment [Table Text Block]	March 31, 2020 March 31, 2019 Construction in progress - equipment $ 3,130 $ 603 Equipment and software 41,737 45,705 Furniture and fixtures 1,302 1,269 Leasehold improvements 2,477 1,955 Property, plant and equipment, gross 48,646 49,532 Less accumulated depreciation (40,081 ) (40,560 ) Property, plant and equipment, net $ 8,565 $ 8,972

Note 10 - Intangible Assets (Ta

Note 10 - Intangible Assets (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	2020 2019 Gross Amount Accumulated Amortization Net Book Value Gross Amount Accumulated Amortization Net Book Value Estimated Useful Life Core technology and know-how $ 5,970 $ (2,420 ) $ 3,550 $ 4,970 $ (2,080 ) $ 2,890 5-10 March 31, 2020 2019 Intangible assets by geography: U.S. $ 3,550 $ 2,890 Total $ 3,550 $ 2,890 March 31, 2020 2019 Intangible assets by business segments: Grid $ 3,550 $ 2,890 Total $ 3,550 $ 2,890
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Fiscal years ending March 31, Total 2021 $ 483 2022 483 2023 483 2024 483 2025 483 Thereafter 1,135 Total $ 3,550 The geographic composition of intangible assets is as follows (in thousands):

Note 11 - Accounts Payable an_2

Note 11 - Accounts Payable and Accrued Expenses (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]	March 31, 2020 March 31, 2019 Accounts payable $ 10,045 $ 2,939 Accrued inventories in-transit 763 244 Accrued other miscellaneous expenses 1,986 1,759 Advanced deposits 666 631 Accrued compensation 5,683 5,404 Income taxes payable 933 3,363 Accrued product warranty 2,015 1,545 Total $ 22,091 $ 15,885
Schedule of Product Warranty Liability [Table Text Block]	Fiscal Years Ended March 31, 2020 2019 Balance at beginning of period $ 1,545 $ 1,769 Change in accruals for warranties during the period 542 727 Settlements during the period (72 ) (951 ) Balance at end of period $ 2,015 $ 1,545

Note 12 - Warrants and Deriva_2

Note 12 - Warrants and Derivative Liabilities (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Fair Value Option, Disclosures [Table Text Block]	September 30, June 30, Fiscal Year 2019 2019 2019 Risk-free interest rate 1.90% 2.11% Expected annual dividend yield — — Expected volatility 62.84% 60.58% Term (years) 0.12 0.37 Fair value $0.6 million $1.7 million March 31, December 31, September 30, June 30, March 31, Fiscal Year 2018 2019 2018 2018 2018 2018 Risk-free interest rate 2.43% 2.61% 2.62% 2.40% 2.20% Expected annual dividend yield — — — — — Expected volatility 75.61% 70.29% 63.66% 67.40% 65.86% Term (years) 0.62 0.87 1.12 1.37 1.62 Fair value $4.6 million $3.6 million $1.3 million $1.6 million $1.1 million

Note 13 - Income Taxes (Tables)

Note 13 - Income Taxes (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]	Fiscal years ended March 31, 2020 2019 Income/(Loss) before income tax expense: U.S. $ (18,260 ) $ (24,289 ) Foreign 1,359 57,430 Total $ (16,901 ) $ 33,141
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Fiscal years ended March 31, 2020 2019 Current Federal $ 1,814 $ 1,246 Foreign 95 4,399 Total current 1,909 5,645 Deferred Federal (1,524 ) 1,588 Foreign (190 ) (853 ) Total deferred (1,714 ) 735 Income tax expense $ 195 $ 6,380
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Fiscal years ended March 31, 2020 2019 Statutory federal income tax rate (21 )% (21 )% Foreign income tax rate differential 2 4 True-up of NOLs 1 (60 ) GILTI 1 37 Other (6 ) 3 Valuation allowance 24 92 Effective income tax rate 1 % (19 )%
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	March 31, 2020 March 31, 2019 Deferred tax assets: Net operating loss carryforwards $ 195,504 $ 181,657 Research and development and other tax credit carryforwards 13,244 13,046 Accruals and reserves 5,352 14,781 Fixed assets and intangible assets 1,697 1,553 Other 1,565 2,785 Gross deferred tax assets 217,362 213,822 Valuation allowance (199,989 ) (196,340 ) Total deferred tax assets 17,373 17,482 Deferred tax liabilities: Intercompany Debt (14,365 ) (16,028 ) Other (1,637 ) (1,794 ) Total deferred tax liabilities (16,002 ) (17,822 ) Net deferred tax asset $ 1,371 $ (340 )

Note 14 - Leases (Tables)

Note 14 - Leases (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Assets And Liabilities Lessee [Table Text Block]	March 31, 2020 Operating Leases: Right-of-use assets $ 3,359 Total right-of-use assets 3,359 Lease liabilities - ST $ 439 Lease liabilities - LT 3,000 Total operating lease liabilities $ 3,439 Weighted-average remaining lease term 6.91 years Weighted-average discount rate 7.08 %
Lease, Cost [Table Text Block]	Year ended March 31, 2020 Operating Lease: Operating lease costs - fixed $ 713 Operating lease costs - variable 100 Short-term lease costs 544 Total lease costs $ 1,357
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Operating Leases Year ended March 31, 2021 $ 665 2022 647 2023 621 2024 559 2025 501 Thereafter 1,394 Total minimum lease payments 4,387 Less: interest (948 ) Present value of lease liabilities $ 3,439
Accounting Standards Update 2016-02 [Member]
Notes Tables
Accounting Standards Update and Change in Accounting Principle [Table Text Block]	March 31, 2019 ASC 842 Adjustment April 1, 2019 Operating Leases: Right of use asset $ — $ 3,795 $ 3,795 Total operating lease right-of-use asset — 3,795 3,795 Operating lease liabilities – ST $ — $ 309 $ 309 Operating lease liabilities – LT — 3,512 3,512 Total operating lease liabilities — 3,821 3,821 Weighted-average remaining lease term 7.69 years Weighted-average discount rate 7.06 %

Note 15 - Stockholders' Equity

Note 15 - Stockholders' Equity (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Share-based Payment Arrangement, Cost by Plan [Table Text Block]	Fiscal years ended March 31, 2020 2019 Stock options $ 16 $ 221 Restricted stock and stock awards 1,870 2,781 Employee stock purchase plan 36 28 Total stock-based compensation expense $ 1,922 $ 3,030
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	Fiscal years ended March 31, 2020 2019 Cost of revenues $ 66 $ 116 Research and development 333 365 Selling, general and administrative 1,522 2,549 Total $ 1,922 $ 3,030
Share-based Payment Arrangement, Option, Activity [Table Text Block]	Options / Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Term Aggregate Intrinsic Value (thousands) Outstanding at March 31, 2019 164,265 $ 96.30 Granted 5,939 11 Canceled/forfeited (29,923 ) 296.62 Outstanding at March 31, 2020 140,281 $ 49.95 2.91 $ — Exercisable at March 31, 2020 134,342 $ 51.68 2.9 $ — Fully vested and expected to vest at March 31, 2020 140,061 $ 50.01 2.63 $ —
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	Fiscal years ended March 31, 2020 2019 Expected volatility 66.5 % N/A Risk-free interest rate 1.8 % N/A Expected life (years) 5.91 N/A Dividend yield None N/A
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]	Shares Weighted Average Grant Date Fair Value Intrinsic Aggregate Value (thousands) Outstanding at March 31, 2019 953,948 $ 5.26 Granted 389,174 8.74 Vested (332,375 ) 6.21 Forfeited (28,500 ) 7.22 Outstanding at March 31, 2020 982,247 $ 6.26 $ 5,383

Note 18 - Restructuring (Tables

Note 18 - Restructuring (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Restructuring and Related Costs [Table Text Block]	Severance pay and benefits Facility exit and Relocation costs Total Accrued restructuring balance at April 1, 2018 $ 262 $ 173 $ 435 Charges to operations — 450 450 Cash payments (262 ) (623 ) (885 ) Accrued restructuring balance at March 31, 2019 $ — $ — $ —

Note 19 - Business Segments (Ta

Note 19 - Business Segments (Tables)	12 Months Ended
	Mar. 31, 2020
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Fiscal Years Ended March 31, 2020 2019 Revenues: Grid $ 49,585 $ 34,290 Wind 14,253 21,917 Total $ 63,838 $ 56,207 Fiscal Years Ended March 31, 2020 2019 Operating income (loss): Grid $ (13,508 ) $ (10,600 ) Wind (7,699 ) 48,103 Unallocated corporate expenses (1,922 ) (3,480 ) Total $ (23,129 ) $ 34,023
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	March 31, 2020 March 31, 2019 Grid $ 44,044 $ 31,075 Wind 14,250 8,167 Corporate assets 65,815 80,088 Total $ 124,109 $ 119,330
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	March 31, 2020 2019 North America $ 8,113 $ 8,555 Europe 397 345 Asia Pacific 55 72 Total $ 8,565 $ 8,972

Note 1 - Nature of the Busine_2

Note 1 - Nature of the Business and Operations and Liquidity (Details Textual) $ / shares in Units, $ in Thousands, € in Millions

Nov. 13, 2019USD ($)$ / sharesshares

May 23, 2019USD ($)

Mar. 28, 2019USD ($)

Jul. 04, 2018USD ($)

Jul. 03, 2018USD ($)

Feb. 01, 2018USD ($)

Dec. 31, 2015USD ($)

Mar. 31, 2020USD ($)

Mar. 31, 2019USD ($)

May 29, 2020EUR (€)

Dec. 27, 2018USD ($)

Mar. 28, 2018USD ($)

Nov. 13, 2014$ / shares

Retained Earnings (Accumulated Deficit), Ending Balance

$ (978,635)

$ (961,539)

Cash, Cash Equivalents, and Marketable Securities

59,900

Net Cash Provided by (Used in) Operating Activities, Total

(16,497)

42,714

Gain (Loss) Related to Litigation Settlement, Total

52,698

Financing Receivable, after Allowance for Credit Loss, Noncurrent, Total

Proceeds from Warrant Exercises

$ 6,139

November 2014 Warrant [Member]

Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares

$ 7.81

$ 7.81

Proceeds from Warrant Exercises

$ 6,100

Class of Warrant or Right, Warrants Exercised (in shares) | shares

786,000

Class of Warrant or Right, Warrants Expired (in shares) | shares

32,181

Sinovel [Member]

Litigation Settlement, Amount Awarded from Other Party

$ 57,500

Litigation Settlement, Number of Installments

2

Proceeds from Legal Settlements

$ 32,500

Litigation Receivable

$ 25,000

Gain (Loss) Related to Litigation Settlement, Total

$ 52,700

64 Jackson, LLC [Member]

Purchase and Sale Agreement, Total Consideration

$ 23,000

Purchase and Sale Agreement, Proceeds from Sale of Property, Plant and Equipment

17,000

Financing Receivable, after Allowance for Credit Loss, Noncurrent, Total

$ 6,000

Purchase and Sale Agreement, Proceeds from Sale of Property, Plant and Equipment, Net

$ 16,900

Notes Receivable, Stated Interest Rate

1.96%

1.96%

Proceeds from Collection of Notes Receivable

$ 3,000

$ 3,000

Inox Wind Limited [Member]

Supply Agreement, Aggregate Value

$ 210,000

Supply Commitment, Extension Period (Year)

3 years

Inox Wind Limited [Member] | Subsequent Event [Member]

Supply Commitment, Default, Letters of Credit to be Received | €

€ 6

Certificates of Deposit [Member] | Minimum [Member]

Debt Securities, Available-for-sale, Term (Month)

330 days

Certificates of Deposit [Member] | Maximum [Member]

Debt Securities, Available-for-sale, Term (Month)

18 years

Note 2 - Summary of Significa_3

Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Inventory Valuation Reserves, Ending Balance	$ 1,300	$ 900
Asset Impairment Charges, Total	0	0
Goodwill, Impairment Loss	$ 0	$ 0	$ 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	354,748	907,988
Foreign Currency Transaction Gain (Loss), before Tax, Total	$ 100	$ 1,600
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Fuji Bridex Pte Ltd [Member]
Concentration Risk, Percentage	25.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Department of Homeland Security [Member]
Concentration Risk, Percentage	18.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Doosan Heavy Industries Construction Co [Member]
Concentration Risk, Percentage	17.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Vestas [Member]
Concentration Risk, Percentage		21.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member] | RES System 3 LLC [Member]
Concentration Risk, Percentage		16.00%

Note 2 - Summary of Significa_4

Note 2 - Summary of Significant Accounting Policies - Property Plant and Equipment Useful Life (Details)	12 Months Ended
	Mar. 31, 2020
Machinery and Equipment [Member] | Minimum [Member]
Property, plant and equipment, useful life (Year)	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, plant and equipment, useful life (Year)	10 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, plant and equipment, useful life (Year)	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, plant and equipment, useful life (Year)	5 years
Leasehold Improvements [Member]
Property, plant and equipment, estimated useful life	Shorter of the estimated useful life or the remaining lease term

Note 2 - Summary of Significa_5

Note 2 - Summary of Significant Accounting Policies - Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net income (loss)	$ (17,096)	$ 26,761
Less: decrease in fair value of warrants, net of income tax	(4,648)
Plus: change in fair value due to exercise of warrants	83
Net income (loss) - diluted	$ (21,662)	$ 26,761
Weighted-average shares of common stock outstanding (in shares)	21,937,000	21,265,000
Weighted-average shares subject to repurchase (in shares)	(953,000)	(930,000)
Shares used in per-share calculation ? basic (in shares)	20,985,000	20,335,000
Common stock awards (in shares)		391
Common stock warrants (in shares)	84,000
Shares used in per-share calculation ? diluted (in shares)	21,069,000	20,726,000
Net income (loss) per share ? basic (in dollars per share)	$ (0.81)	$ 1.32
Net income (loss) per share ? diluted (in dollars per share)	$ (1.03)	$ 1.29

Note 3 - Revenue Recognition 1

Note 3 - Revenue Recognition 1 (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue, Performance Obligation Satisfied, Revenue Recognized, Percentage	72.00%
Geographic Concentration Risk [Member] | Revenue Benchmark [Member] | Non-US [Member]
Concentration Risk, Percentage	51.00%	74.00%
Minimum [Member]
Warranty Period (Year)	1 year
Contract with Customer, Payment Term (Day)	30 days
Maximum [Member]
Warranty Period (Year)	3 years
Extended Service Warranty, Term (Year)	4 years
Contract with Customer, Payment Term (Day)	60 days
Grant [Member]
Revenues, Total	$ 6,400	$ 0

Note 3 - Revenue Recognition 2

Note 3 - Revenue Recognition 2 (Details Textual) $ in Thousands	Mar. 31, 2020USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)	1 year
Revenue, Remaining Performance Obligation, Amount	$ 61,400
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Amount	$ 8,200
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)	1 year 30 days
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01 | Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)	5 years

Note 3 - Revenue Recognition -

Note 3 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues	$ 63,838	$ 56,207
Grid [Member]
Revenues	49,585	34,290
Grid [Member] | Americas [Member]
Revenues	33,207	22,811
Grid [Member] | Asia Pacific [Member]
Revenues	10,407	7,267
Grid [Member] | EMEA [Member]
Revenues	5,971	4,212
Wind [Member]
Revenues	14,253	21,917
Wind [Member] | Americas [Member]
Revenues	87	112
Wind [Member] | Asia Pacific [Member]
Revenues	13,996	21,200
Wind [Member] | EMEA [Member]
Revenues	170	605
Equipment and Systems [Member] | Grid [Member]
Revenues	44,065	26,645
Equipment and Systems [Member] | Wind [Member]
Revenues	12,282	19,287
Services and Technology Development [Member] | Grid [Member]
Revenues	5,520	7,645
Services and Technology Development [Member] | Wind [Member]
Revenues	$ 1,971	$ 2,630

Note 3 - Revenue Recognition _2

Note 3 - Revenue Recognition - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Unbilled AR, beginning balance	$ 2,213	$ 3,016
Deferred Program Costs, beginning balance	318	2,567
Contract Liabilities, beginning balance	15,521	21,937
Deferred Program Costs, increases for costs incurred to fulfill performance obligations	4,844	1,585
Unbilled AR, increase (decrease) due to customer billings	(11,516)	(12,076)
Increase (decrease) due to customer billings	47,877	20,540
Unbilled AR,Decrease due to cost recognition on completed performance obligations
Deferred Program Costs, decrease due to cost recognition on completed performance obligations	(3,525)	(2,212)
Unbilled AR, increase (decrease) due to recognition of revenue based on transfer of control of performance obligations	15,017	11,324
Deferred Program Costs, increase (decrease) due to recognition of revenue based on transfer of control of performance obligations		(9)
Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations	(37,009)	(23,084)
Unbilled AR, other changes and FX impact	(3)	(51)
Deferred Program Costs, other changes and FX impact	(6)	(14)
Other changes and FX impact	(247)	(1,215)
Unbilled AR, Impact of adoption of ASC 606
Deferred Program Costs, Impact of adoption of ASC 606		(1,599)
Contract Liabilities, Impact of adoption of ASC 606		(2,657)
Unbilled AR, ending balance	5,711	2,213
Deferred Program Costs, ending balance	1,631	318
Contract Liabilities, ending balance	$ 26,142	$ 15,521

Note 3 - Revenue Recognition _3

Note 3 - Revenue Recognition - Revenues By Major Customers (Details) - Revenue Benchmark [Member] - Customer Concentration Risk [Member]	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Department of Homeland Security [Member] | Grid [Member]
Concentration risk percentage	10.00%	10.00%
Vestas WTG Mexico [Member] | Grid [Member]
Concentration risk percentage	10.00%	15.00%
Inox Wind Limited [Member] | Wind [Member]
Concentration risk percentage	10.00%	34.00%

Note 4 - Goodwill (Details Text

Note 4 - Goodwill (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Goodwill, Impairment Loss	$ 0	$ 0	$ 0

Note 5 - Fair Value Measureme_3

Note 5 - Fair Value Measurements (Details Textual) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Unrealized Gain (Loss) on Securities	$ 100	$ 0
Class of Warrant or Right, Outstanding (in shares)	0

Note 5 - Fair Value Measureme_4

Note 5 - Fair Value Measurements - Assets and Liabilities Carried at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Derivative liabilities		$ 4,942
Reported Value Measurement [Member] | Fair Value, Recurring [Member]
Cash equivalents	19,394	41,839
Marketable securities	35,195
Reported Value Measurement [Member] | Fair Value, Recurring [Member] | Warrant [Member]
Derivative liabilities		4,942
Reported Value Measurement [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents	19,394	41,839
Marketable securities	35,195
Derivative liabilities		0
Reported Value Measurement [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents	0
Marketable securities
Derivative liabilities		0
Reported Value Measurement [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Cash equivalents	0
Marketable securities
Derivative liabilities		$ 4,942

Note 5 - Fair Value Measureme_5

Note 5 - Fair Value Measurements - Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Beginning balance	$ 4,942	$ 1,217
Mark to market adjustment		3,725
March 31, 2020	0	4,942
Warrant Liability [Member]
Beginning balance	4,942
Mark to market adjustment	(4,648)
Exercise of in-the-money warrants	$ (294)
March 31, 2020		$ 4,942

Note 6 - Accounts Receivable -

Note 6 - Accounts Receivable - Summary of Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Accounts receivable (billed)	$ 11,276	$ 5,642
Accounts receivable (unbilled)	5,711	2,213
Accounts receivable	$ 16,987	$ 7,855

Note 7 - Inventory (Details Tex

Note 7 - Inventory (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Inventory Write-down	$ 1,276	$ 878

Note 7 - Inventory - Summary of

Note 7 - Inventory - Summary of Net Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Raw materials	$ 10,739	$ 5,474
Work-in-process	1,345	1,922
Finished goods	5,260	4,405
Deferred program costs	1,631	318
Inventory	$ 18,975	$ 12,119

Note 8 - Note Receivable (Detai

Note 8 - Note Receivable (Details Textual) $ in Millions	Feb. 01, 2018USD ($)	Mar. 31, 2020USD ($)	Mar. 31, 2019USD ($)	Sep. 30, 2018USD ($)	Mar. 28, 2018
Financing Receivable, after Allowance for Credit Loss, Noncurrent, Total
Notes and Loans Receivable, Noncurrent Portion of Unamortized Debt Discount
Deferred Gain on Sale of Property
64 Jackson, LLC [Member]
Purchase and Sale Agreement, Total Consideration	$ 23
Security Deposit	1
Financing Receivable, after Allowance for Credit Loss, Noncurrent, Total	6
Notes and Loans Receivable, Number of Installments		2
Notes and Loans Receivable, Installment Amount		$ 3
Notes Receivable, Stated Interest Rate		1.96%			1.96%
Notes Receivable, Fair Value Disclosure		$ 5.7
Note Receivable Discount Rate		6.00%
Notes and Loans Receivable, Noncurrent Portion of Unamortized Debt Discount	$ 0.3	$ 0.1
Deferred Gain on Sale of Property				$ 0.1

Note 8 - Note Receivable - Summ

Note 8 - Note Receivable - Summary of Note Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Note receivable, current		$ 3,000
Note receivable discount		(112)
Total current note receivable		2,888
Note receivable, long term
Note receivable discount
Deferred gain on sale
Total long term note receivable

Note 9 - Property, Plant and _3

Note 9 - Property, Plant and Equipment (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Depreciation, Depletion and Amortization, Total	$ 4	$ 4.3

Note 9 - Property, Plant and _4

Note 9 - Property, Plant and Equipment - Cost and Accumulated Depreciation of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Property, plant and equipment, gross	$ 48,646	$ 49,532
Less accumulated depreciation	(40,081)	(40,560)
Property, plant and equipment, net	8,565	8,972
Construction in Progress [Member]
Property, plant and equipment, gross	3,130	603
Equipment and Software [Member]
Property, plant and equipment, gross	41,737	45,705
Furniture and Fixtures [Member]
Property, plant and equipment, gross	1,302	1,269
Leasehold Improvements [Member]
Property, plant and equipment, gross	$ 2,477	$ 1,955

Note 10 - Intangible Assets (De

Note 10 - Intangible Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Amortization of Intangible Assets, Total	$ 0.3	$ 0.3

Note 10 - Intangible Assets - I

Note 10 - Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net Book Value	$ 3,550	$ 2,890
Grid [Member]
Net Book Value	3,550	2,890
UNITED STATES
Net Book Value	3,550	2,890
Core Technology and Know-how [Member]
Gross Amount	5,970	4,970
Accumulated Amortization	(2,420)	(2,080)
Net Book Value	$ 3,550	$ 2,890
Core Technology and Know-how [Member] | Minimum [Member]
Estimated Useful Life (Year)	5 years
Core Technology and Know-how [Member] | Maximum [Member]
Estimated Useful Life (Year)	10 years

Note 10 - Intangible Assets - E

Note 10 - Intangible Assets - Expected Future Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
2021	$ 483
2022	483
2023	483
2024	483
2025	483
Thereafter	1,135
Total	$ 3,550	$ 2,890

Note 11 - Accounts Payable an_3

Note 11 - Accounts Payable and Accrued Expenses (Details Textual)	12 Months Ended
	Mar. 31, 2020
Minimum [Member]
Extended Warranty Trigger Period (Year)	1 year
Maximum [Member]
Extended Warranty Trigger Period (Year)	3 years

Note 11 - Accounts Payable an_4

Note 11 - Accounts Payable and Accrued Expenses - Summary of Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Accounts payable	$ 10,045	$ 2,939
Accrued inventories in-transit	763	244
Accrued other miscellaneous expenses	1,986	1,759
Advanced deposits	666	631
Accrued compensation	5,683	5,404
Income taxes payable	933	3,363
Accrued product warranty	2,015	1,545
Total	$ 22,091	$ 15,885

Note 11 - Accounts Payable an_5

Note 11 - Accounts Payable and Accrued Expenses - Product Warranty Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Balance at beginning of period	$ 1,545	$ 1,769
Change in accruals for warranties during the period	542	727
Settlements during the period	(72)	(951)
Balance at end of period	$ 2,015	$ 1,545

Note 12 - Warrants and Deriva_3

Note 12 - Warrants and Derivative Liabilities (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	Nov. 13, 2019	Apr. 17, 2019	Dec. 19, 2014	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Nov. 13, 2014
Gain (Loss) in Change of Fair Value of Derivative Instruments and Warrants				$ 4,648	$ (3,725)
Class of Warrant or Right, Outstanding (in shares)				0
Hercules Warrants [Member]
Gain (Loss) on Decrease Fair Value Upon Exercise of Warrant				$ 100	(200)
November 2014 Warrant [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 7.81						$ 7.81
Common Unit, Issued (in shares)							909,090
Common Shares Per Unit (in shares)							1
Class of Warrant or Right, Number of Warrants to Purchase One Share of Stock (in shares)							0.9
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)							818,181
Class of Warrant or Right, Warrants Exercised (in shares)	786,000
Class of Warrant or Right, Warrants Expired (in shares)	32,181
Gain (Loss) in Change of Fair Value of Derivative Instruments and Warrants				$ 4,600	3,500
Hercules Technology Growth Capital [Member]
Stock Issued During Period, Shares, Warrant Exercised (in shares)		22,821
Secured Debt [Member] | Hercules Technology Growth Capital [Member] | First Warrant [Member]
Purchase Commitment, Issuance of Warrants, Shares of Common Stock (in shares)				13,927
Secured Debt [Member] | Hercules Technology Growth Capital [Member] | Second Warrant [Member]
Purchase Commitment, Issuance of Warrants, Shares of Common Stock (in shares)				25,641
Secured Debt [Member] | Hercules Technology Growth Capital [Member] | Hercules Warrants [Member]
Purchase Commitment, Issuance of Warrants, Shares of Common Stock (in shares)			58,823
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)				$ 7.85
Derivative, Fair Value, Net, Total					$ 400	$ 100

Note 12 - Warrants and Deriva_4

Note 12 - Warrants and Derivative Liabilities - Summary of the Key Assumptions Used to Calculate Fair Value of Warrants (Details) $ in Millions	Mar. 31, 2020USD ($)	Sep. 30, 2019USD ($)	Jun. 30, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Sep. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Mar. 31, 2018USD ($)
Fair value		$ 0.6	$ 1.7	$ 4.6	$ 3.6	$ 1.3	$ 1.6	$ 1.1
Fair value		$ 0.6	$ 1.7	$ 4.6	$ 3.6	$ 1.3	$ 1.6	$ 1.1
Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input		0.019	0.0211	2.43	2.61	2.62	2.4	2.2
Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input
Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input		0.6284	0.6058	75.61	70.29	63.66	67.4	65.86
Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input		0.12	0.37	0.62	0.87	1.12	1.37	1.62

Note 13 - Income Taxes (Details

Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Deferred Tax Assets, Valuation Allowance, Total	$ 199,989	$ 196,340
Operating Loss Carryforwards Indefinite	54,000
Undistributed Earnings of Foreign Subsidiaries	1,900
Deferred Tax Liabilities, Undistributed Foreign Earnings	200
Liability for Uncertainty in Income Taxes, Current	0
Unrecognized Tax Benefits, Ending Balance	0	$ 0
Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	10,100
Other Tax Credit Carryforwards [Member]
Tax Credit Carryforward, Amount	3,500
Power Quality Systems, Inc [Member]
Operating Loss Carryforwards, Total	3,700
Infinia Technology Corporation (ITC) [Member]
Operating Loss Carryforwards, Total	300
Domestic Tax Authority [Member]
Operating Loss Carryforwards, Total	799,200
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total	203,600
Foreign Tax Authority [Member] | State Administration of Taxation, China [Member]
Operating Loss Carryforwards, Total	$ 56,000

Note 13 - Income Taxes - Income

Note 13 - Income Taxes - Income (Loss) Before Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
U.S.	$ (18,260)	$ (24,289)
Foreign	1,359	57,430
Total	$ (16,901)	$ 33,141

Note 13 - Income Taxes - Compon

Note 13 - Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Federal	$ 1,814	$ 1,246
Foreign	95	4,399
Total current	1,909	5,645
Federal	(1,524)	1,588
Foreign	(190)	(853)
Total deferred	(1,714)	735
Income tax expense	$ 195	$ 6,380

Note 13 - Income Taxes - Inco_2

Note 13 - Income Taxes - Income Tax Rate Reconciliation (Details)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statutory federal income tax rate	(21.00%)	(21.00%)
Foreign income tax rate differential	2.00%	4.00%
True-up of NOLs	1.00%	(60.00%)
GILTI	1.00%	37.00%
Other	(6.00%)	3.00%
Valuation allowance	24.00%	92.00%
Effective income tax rate	1.00%	(19.00%)

Note 13 - Income Taxes - Deferr

Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Net operating loss carryforwards	$ 195,504	$ 181,657
Research and development and other tax credit carryforwards	13,244	13,046
Accruals and reserves	5,352	14,781
Fixed assets and intangible assets	1,697	1,553
Other	1,565	2,785
Gross deferred tax assets	217,362	213,822
Valuation allowance	(199,989)	(196,340)
Total deferred tax assets	17,373	17,482
Intercompany Debt	(14,365)	(16,028)
Other	(1,637)	(1,794)
Total deferred tax liabilities	(16,002)	(17,822)
Net deferred tax liabilities	$ 1,371
Net deferred tax asset		$ (340)

Note 14 - Leases (Details Textu

Note 14 - Leases (Details Textual) - USD ($) $ in Thousands	Apr. 01, 2019	Mar. 31, 2020	Mar. 31, 2019
Operating Lease, Right-of-Use Asset	$ 3,795	$ 3,359
Operating Lease, Liability, Total	3,821	$ 3,439
Maximum [Member]
Lessee, Operating Lease, Renewal Term (Year)		5 years
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset	3,800		3,795
Operating Lease, Liability, Total	3,800		$ 3,821
Operating Lease, Impairment Loss	$ 0

Note 14 - Leases - Adoption of

Note 14 - Leases - Adoption of ASC 842 (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Apr. 01, 2019	Mar. 31, 2019
Right of use asset	$ 3,359	$ 3,795
Operating lease liabilities – ST	439	309
Operating lease liabilities – LT	3,000	3,512
Total operating lease liabilities	$ 3,439	$ 3,821
Weighted-average remaining lease term (Year)	6 years 332 days	7 years 251 days
Weighted-average discount rate	7.08%	7.06%
Accounting Standards Update 2016-02 [Member]
Right of use asset		$ 3,800	3,795
Operating lease liabilities – ST			309
Operating lease liabilities – LT			3,512
Total operating lease liabilities		$ 3,800	3,821
Previous Accounting Guidance [Member]
Right of use asset
Operating lease liabilities – ST
Operating lease liabilities – LT
Total operating lease liabilities

Note 14 - Leases - Operating Le

Note 14 - Leases - Operating Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Apr. 01, 2019	Mar. 31, 2019
Right of use asset	$ 3,359	$ 3,795
Operating lease liabilities – ST	439	309
Operating lease liabilities – LT	3,000	3,512
Total operating lease liabilities	$ 3,439	$ 3,821
Weighted-average remaining lease term (Year)	6 years 332 days	7 years 251 days
Weighted-average discount rate	7.08%	7.06%

Note 14 - Leases - Lease Cost (

Note 14 - Leases - Lease Cost (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2020USD ($)
Operating lease costs - fixed	$ 713
Operating lease costs - variable	100
Short-term lease costs	544
Total lease costs	$ 1,357

Note 14 - Leases - Minimum Futu

Note 14 - Leases - Minimum Future Lease Obligation (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Apr. 01, 2019
2021	$ 665
2022	647
2023	621
2024	559
2025	501
Thereafter	1,394
Total minimum lease payments	4,387
Less: interest	(948)
Total operating lease liabilities	$ 3,439	$ 3,821

Note 15 - Stockholders' Equit_2

Note 15 - Stockholders' Equity (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Aug. 01, 2019	Jul. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	0	5,939	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		389,174
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)		28,500
Share-based Payment Arrangement, Expense		$ 1,922,000	$ 3,030,000
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		1 year 73 days
Share-based Payment Arrangement, Expense		$ 16,000	221,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value		3,400,000	3,600,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 3,400,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)		1 year 219 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value		$ 2,900,000	2,600,000
Share-based Payment Arrangement, Expense		$ 1,870,000	2,781,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value			$ 28,500
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		94,500	57,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (in shares)			28,500
The 2007 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)				4,600,000	3,400,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)		1,249,930
The 2007 Plan [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)		10 years
The 2007 Plan [Member] | Share-based Payment Arrangement, Option [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		3 years
The 2007 Plan [Member] | Share-based Payment Arrangement, Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		5 years
The 2007 Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		3 years
The 2007 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)				280,000	230,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)		2 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Fair Value		$ 40,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value		$ 40,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)		108,474
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total		$ 100,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)		203,134
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date			15.00%
Employee Stock Purchase Plan [Member] | Maximum [Member]
Share-based Payment Arrangement, Expense		$ 100,000	$ 100,000

Note 15 - Stockholders' Equit_3

Note 15 - Stockholders' Equity - Components of Employee Stock-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock-based compensation expense	$ 1,922	$ 3,030
Share-based Payment Arrangement, Option [Member]
Stock-based compensation expense	16	221
Restricted Stock [Member]
Stock-based compensation expense	1,870	2,781
Awards by Employee Stock Purchase Plan [Member]
Stock-based compensation expense	$ 36	$ 28

Note 15 - Stockholders' Equit_4

Note 15 - Stockholders' Equity - Summarizes Employee Stock-based Compensation Expense by Financial Statement Line Item (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock-based compensation expense	$ 1,922	$ 3,030
Cost of Sales [Member]
Stock-based compensation expense	66	116
Research and Development Expense [Member]
Stock-based compensation expense	333	365
Selling, General and Administrative Expenses [Member]
Stock-based compensation expense	$ 1,522	$ 2,549

Note 15 - Stockholders' Equit_5

Note 15 - Stockholders' Equity - Options Activities (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Outstanding, options (in shares)		164,265
Outstanding, weighted-average exercise price (in dollars per share)		$ 96.30
Outstanding, aggregate intrinsic value
Granted (in shares)	0	5,939	0
Granted (in dollars per share)		$ 11
Canceled/forfeited, options (in shares)		(29,923)
Canceled/forfeited, weighted-average exercise price (in dollars per share)		$ 296.62
Outstanding, options (in shares)	164,265	140,281	164,265
Outstanding, weighted-average exercise price (in dollars per share)	$ 96.30	$ 49.95	$ 96.30
Outstanding, weighted-average remaining contractual term (Year)		2 years 332 days
Exercisable, options (in shares)		134,342
Exercisable, weighted-average exercise price (in dollars per share)		$ 51.68
Exercisable, weighted-average remaining contractual term (Year)		2 years 328 days
Fully vested and expected to vest, options (in shares)		140,061
Fully vested and expected to vest, weighted-average exercise price (in dollars per share)		$ 50.01
Fully vested and expected to vest, weighted-average remaining contractual term (Year)		2 years 229 days
Fully vested and expected to vest, aggregate intrinsic value

Note 15 - Stockholders' Equit_6

Note 15 - Stockholders' Equity - Stock Options Granted (Details)	12 Months Ended
	Mar. 31, 2020
Expected volatility	66.50%
Risk-free interest rate	1.80%
Expected life (years) (Year)	5 years 332 days

Note 15 - Stockholders' Equit_7

Note 15 - Stockholders' Equity - Restricted Stock Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2020USD ($)$ / sharesshares
Outstanding, restricted stock (in shares) | shares	953,948
Outstanding, restricted stock, weighted average grant date fair value (in dollars per share) | $ / shares	$ 5.26
Granted, restricted stock (in shares) | shares	389,174
Granted, restricted stock, weighted average grant date fair value (in dollars per share) | $ / shares	$ 8.74
Vested, restricted stock (in shares) | shares	(332,375)
Vested, restricted stock, weighted average grant date fair value (in dollars per share) | $ / shares	$ 6.21
Forfeited, restricted stock (in shares) | shares	(28,500)
Forfeited, restricted stock, weighted average grant date fair value (in dollars per share) | $ / shares	$ 7.22
Outstanding, restricted stock (in shares) | shares	982,247
Outstanding, restricted stock, weighted average grant date fair value (in dollars per share) | $ / shares	$ 6.26
Outstanding, restricted stock, intrinsic aggregate value | $	$ 5,383

Note 16 - Commitments and Con_2

Note 16 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2020	Jul. 01, 2019
Operating Leases, Rent Expense, Net, Total	$ 1,300
Restricted Cash and Cash Equivalents, Noncurrent, Total	$ 715	$ 5,657
Preconfirmation, Restricted Cash and Cash Equivalents, Current		$ 500
Letter of Credit [Member]
Escrow Deposit			$ 5,000

Note 17 - Employee Benefit Pl_2

Note 17 - Employee Benefit Plans (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Defined Contribution Plan, Company Contribution, Percentage Match Common Stock	50.00%
Defined Contribution Plan, Percentage of First Eligible Employee Contribution Matched by Employer	6.00%
Defined Contribution Plan, Cost	$ 0.3	$ 0.3

Note 18 - Restructuring (Detail

Note 18 - Restructuring (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Restructuring Charges, Total		$ 450

Note 18 - Restructuring - Restr

Note 18 - Restructuring - Restructuring Charges and Cash Payments (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accrued restructuring balance, beginning		$ 435
Restructuring Charges, Total		450
Cash payments		(885)
Accrued restructuring balance, ending
Employee Severance Pay and Benefits [Member]
Accrued restructuring balance, beginning		262
Restructuring Charges, Total
Cash payments		(262)
Accrued restructuring balance, ending
Facility Exit and Relocation Costs [Member]
Accrued restructuring balance, beginning		173
Restructuring Charges, Total		450
Cash payments		(623)
Accrued restructuring balance, ending

Note 19 - Business Segments (De

Note 19 - Business Segments (Details Textual) $ in Thousands	12 Months Ended
	Mar. 31, 2020USD ($)Boe	Mar. 31, 2019USD ($)
Number of Reportable Segments	2
Share-based Payment Arrangement, Expense	$ 1,922	$ 3,030
Restructuring Charges, Total		450
Corporate, Non-Segment [Member]
Share-based Payment Arrangement, Expense	$ 1,900	3,000
Restructuring Charges, Total		$ 500
Minimum [Member]
Number of Reportable Segments (Barrel of Oil Equivalent) | Boe	2

Note 19 - Business Segments - O

Note 19 - Business Segments - Operating Results for Business Segments (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues	$ 63,838	$ 56,207
Operating profit (loss)	(23,129)	34,023
Corporate, Non-Segment [Member]
Operating profit (loss)	(1,922)	(3,480)
Grid [Member]
Revenues	49,585	34,290
Grid [Member] | Operating Segments [Member]
Operating profit (loss)	(13,508)	(10,600)
Wind [Member]
Revenues	14,253	21,917
Wind [Member] | Operating Segments [Member]
Operating profit (loss)	$ (7,699)	$ 48,103

Note 19 - Business Segments - T

Note 19 - Business Segments - Total Business Segments Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Total assets	$ 124,109	$ 119,330
Operating Segments [Member] | Grid [Member]
Total assets	44,044	31,075
Operating Segments [Member] | Wind [Member]
Total assets	14,250	8,167
Corporate, Non-Segment [Member]
Total assets	$ 65,815	$ 80,088

Note 19 - Business Segments - G

Note 19 - Business Segments - Geographic Information about Property, Plant and Equipment Associated with Particular Regions (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Property, Plant and Equipment, Net	$ 8,565	$ 8,972
North America [Member]
Property, Plant and Equipment, Net	8,113	8,555
Europe [Member]
Property, Plant and Equipment, Net	397	345
Asia Pacific [Member]
Property, Plant and Equipment, Net	$ 55	$ 72