American Superconductor (AMSC) 10-Q 6 Aug 24 2025 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Jun. 30, 2024	Aug. 02, 2024
Document Information [Line Items]
Entity Central Index Key	0000880807
Entity Registrant Name	AMERICAN SUPERCONDUCTOR CORP /DE/
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2025
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	0-19672
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-2959321
Entity Address, Address Line One	114 East Main St.
Entity Address, City or Town	Ayer
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01432
City Area Code	978
Local Phone Number	842-3000
Title of 12(b) Security	Common Stock, $0.01 par value per share
Trading Symbol	AMSC
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		38,295,761

Unaudited Condensed Consolidate

Unaudited Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Current assets:
Cash and cash equivalents	$ 93,455	$ 90,522
Accounts receivable, net	23,529	26,325
Inventory, net	45,149	41,857
Prepaid expenses and other current assets	10,424	7,295
Restricted cash	468	468
Total current assets	173,025	166,467
Property, plant and equipment, net	10,529	10,861
Intangibles, net	5,957	6,369
Right-of-use assets	4,096	2,557
Goodwill	43,471	43,471
Restricted cash	1,600	1,290
Deferred tax assets	1,114	1,119
Other assets	351	637
Total assets	240,143	232,771
Current liabilities:
Accounts payable and accrued expenses	22,309	24,235
Lease liability, current portion	862	716
Debt, current portion	9	25
Contingent consideration	7,020	3,100
Deferred revenue, current portion	55,984	50,732
Total current liabilities	86,184	78,808
Deferred revenue, long-term portion	6,929	7,097
Lease liability, long-term portion	3,359	1,968
Deferred tax liabilities	300	300
Other liabilities	27	27
Total liabilities	96,799	88,200
Commitments and Contingencies (Note 16)
Stockholders' equity:
Common stock	374	373
Additional paid-in capital	1,214,320	1,212,913
Treasury stock	(3,765)	(3,639)
Accumulated other comprehensive income	1,597	1,582
Accumulated deficit	(1,069,182)	(1,066,658)
Total stockholders' equity	143,344	144,571
Total liabilities and stockholders' equity	$ 240,143	$ 232,771

Unaudited Condensed Consolida_2

Unaudited Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Revenues	$ 40,290	$ 30,254
Cost of revenues	28,065	23,972
Gross margin	12,225	6,282
Operating expenses:
Research and development	2,286	1,853
Selling, general and administrative	8,898	7,868
Amortization of acquisition-related intangibles	412	538
Change in fair value of contingent consideration	3,920	1,350
Restructuring	0	6
Total operating expenses	15,516	11,615
Operating loss	(3,291)	(5,333)
Interest income, net	1,120	174
Other expense, net	(160)	(118)
Loss before income tax expense	(2,331)	(5,277)
Income tax expense	193	121
Net loss	$ (2,524)	$ (5,398)
Net loss per common share
Basic (in dollars per share)	$ (0.07)	$ (0.19)
Diluted (in dollars per share)	$ (0.07)	$ (0.19)
Weighted average number of common shares outstanding
Basic (in shares)	35,676	28,258
Diluted (in shares)	35,676	28,258

Unaudited Condensed Consolida_3

Unaudited Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Net loss	$ (2,524)	$ (5,398)
Other comprehensive (loss) gain, net of tax:
Foreign currency translation (loss) gain	15	(2)
Total other comprehensive (loss) gain, net of tax	15	(2)
Comprehensive loss	$ (2,509)	$ (5,400)

Unaudited Condensed Consolida_4

Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Mar. 31, 2023	29,937
Balance at Mar. 31, 2023	$ 299	$ 1,139,113	$ (3,639)	$ 1,571	$ (1,055,547)	$ 81,797
Issuance of common stock – restricted shares (in shares)	699
Issuance of common stock – restricted shares	$ 7	(7)	0	0	0	0
Stock-based compensation expense		1,357				1,357
Issuance of common stock for 401(k) match (in shares)	33
Issuance of common stock for 401(k) match	$ 1	163	0	0	0	164
Cumulative translation adjustment				(2)		(2)
Net loss					(5,398)	(5,398)
Balance (in shares) at Jun. 30, 2023	30,669
Balance at Jun. 30, 2023	$ 307	1,140,626	(3,639)	1,569	(1,060,945)	77,918
Balance (in shares) at Mar. 31, 2024	37,343
Balance at Mar. 31, 2024	$ 373	1,212,913	(3,639)	1,582	(1,066,658)	144,571
Issuance of common stock – restricted shares (in shares)	44
Issuance of common stock – restricted shares	$ 1	(1)	0	0	0	0
Stock-based compensation expense		1,229				1,229
Issuance of common stock for 401(k) match (in shares)	12
Issuance of common stock for 401(k) match	$ 0	179	0	0	0	179
Repurchase of treasury stock	$ 0	0	(126)	0	0	(126)
Cumulative translation adjustment				15		15
Net loss					(2,524)	(2,524)
Balance (in shares) at Jun. 30, 2024	37,399
Balance at Jun. 30, 2024	$ 374	$ 1,214,320	$ (3,765)	$ 1,597	$ (1,069,182)	$ 143,344

Unaudited Condensed Consolida_5

Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net loss	$ (2,524)	$ (5,398)
Adjustments to reconcile net loss to net cash provided by (used in) operations:
Depreciation and amortization	1,008	1,119
Stock-based compensation expense	1,229	1,357
Provision for excess and obsolete inventory	503	384
Amortization of operating lease right-of-use assets	192	195
Deferred income taxes	(2)	(1)
Change in fair value of contingent consideration	3,920	1,350
Other non-cash items	(3)	5
Changes in operating asset and liability accounts:
Accounts receivable	2,786	549
Inventory	(3,799)	(6,272)
Prepaid expenses and other assets	(3,099)	6,738
Operating leases	(195)	(195)
Accounts payable and accrued expenses	(1,734)	(9,394)
Deferred revenue	5,127	7,318
Net cash provided by (used in) operating activities	3,409	(2,245)
Cash flows from investing activities:
Purchases of property, plant and equipment	(265)	(214)
Change in other assets	245	(79)
Net cash used in investing activities	(20)	(293)
Cash flows from financing activities:
Repayment of debt	(16)	(17)
Employee taxes paid related to net settlement of equity awards	(126)	0
Net cash used in financing activities	(142)	(17)
Effect of exchange rate changes on cash	(4)	2
Net increase (decrease) in cash, cash equivalents and restricted cash	3,243	(2,553)
Cash, cash equivalents and restricted cash at beginning of period	92,280	25,675
Cash, cash equivalents and restricted cash at end of period	95,523	23,122
Supplemental schedule of cash flow information:
Cash paid for income taxes, net of refunds	148	81
Non-cash investing and financing activities
Right-of-use assets obtained in exchange for new lease obligations	1,730	8
Issuance of common stock to settle liabilities	$ 179	$ 163

Note 1 - Nature of the Business

Note 1 - Nature of the Business and Operations and Liquidity	3 Months Ended
	Jun. 30, 2024
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. These unaudited condensed consolidated financial statements of the Company 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 not June 30, 2024 2023 June 30, 2024 not may March 31, 2024 10 March 31, 2024 May 29, 2024 Liquidity The Company has historically experienced recurring operating losses and as of June 30, 2024 June 30, 2024 three June 30, 2024 In January 2024, 3 three March 15, 2027 ( 3” 3 3 3 On January 31, 2024, "2024 2024 2024 February 14, 2024. On August 1, 2024, x 5.6 In recent periods, the Company has experienced inflationary pressure in its supply chain and some delays in sourcing materials needed for its products resulting in some production disruption, both of which have increased the Company’s cost of revenues and decreased gross margin. While the impact of inflation has been challenging, the Company has taken actions to limit this pressure, including adjusting the pricing of its products and services. Changes in macroeconomic conditions arising from various reasons, such as the ongoing wars between Russia and Ukraine and Israel and Hamas, inflation, rising interest rates, labor force availability, sourcing, material delays and global supply chain disruptions could have a material adverse effect on the Company’s business, financial condition and results of operation. The Company believes that based on the information presented above and its quarterly management assessment, it has sufficient liquidity to fund its operations and capital expenditures for the next twelve three June 30, 2024 may no

Note 2 - Revenue Recognition

Note 2 - Revenue Recognition	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	2. 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. three June 30, 2024 2023 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, which is primarily upon delivery, as the Company has determined that this is the point in time that control transfers to the customer. 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. This transfer 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 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 June 30, 2024 March 31, 2024 not 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 (in thousands): Three Months Ended June 30, 2024 Product Line: Grid Wind Equipment and systems $ 29,726 $ 7,424 Services and technology development 2,610 530 Total $ 32,336 $ 7,954 Region: Americas $ 30,479 $ — Asia Pacific 1,199 7,952 EMEA 658 2 Total $ 32,336 $ 7,954 Three Months Ended June 30, 2023 Product Line: Grid Wind Equipment and systems $ 23,126 $ 3,982 Services and technology development 2,611 535 Total $ 25,737 $ 4,517 Region: Americas $ 23,161 $ — Asia Pacific 1,711 4,465 EMEA 865 52 Total $ 25,737 $ 4,517 As of June 30, 2024 2023 7, 8, Unbilled Accounts Receivable Deferred Program Costs Contract Liabilities Beginning balance as of March 31, 2024 $ 6,150 $ 2,523 $ 57,829 Increases for costs incurred to fulfill performance obligations — 2,119 — Increase (decrease) due to customer billings (3,521 ) — 27,577 Decrease due to cost recognition on completed performance obligations — (606 ) — Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations 2,291 — (22,443 ) Other changes and FX impact (2 ) (2 ) (50 ) Ending balance as of June 30, 2024 $ 4,918 $ 4,034 $ 62,913 Unbilled Accounts Receivable Deferred Program Costs Contract Liabilities Beginning balance as of March 31, 2023 $ 9,958 $ 2,136 $ 50,760 Increases for costs incurred to fulfill performance obligations — 1,084 — Increase (decrease) due to customer billings (9,479 ) — 16,308 Decrease due to cost recognition on completed performance obligations — (1,234 ) — Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations 5,092 — (8,974 ) Other changes and FX impact 1 — (11 ) Ending balance as of June 30, 2023 $ 5,572 $ 1,986 $ 58,083 The Company’s remaining performance obligations represent the unrecognized revenue value of the Company’s contractual commitments. The Company’s performance obligations may June 30, 2024 606 twelve million illion o thirteen sixty The following table sets forth customers who represented 10% three June 30, 2024 2023 Three Months Ended Reportable June 30, Segment 2024 2023 Inox Wind Limited Wind 18 % 12 %

Note 3 - Stock-based Compensati

Note 3 - Stock-based Compensation	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Share-Based Payment Arrangement [Text Block]	3. The Company accounts for its stock-based compensation at fair value. The following table summarizes stock-based compensation expense by financial statement line item for the three June 30, 2024 2023 Three Months Ended June 30, 2024 2023 Cost of revenues $ 58 $ 109 Research and development 143 156 Selling, general and administrative 1,028 1,092 Total $ 1,229 $ 1,357 The Company issued 25,000 shares of restricted stock and 19,200 shares of immediately vested common stock during the three June 30, 2024 three June 30, 2023 The estimated fair value of the Company’s stock-based awards, less expected annual forfeitures, is amortized over the awards’ service period. There were no unrecognized compensation costs for unvested stock options of June 30, 2024 llion as of June 30, 2024 The Company granted no stock options during the three June 30, 2024 2023

Note 4 - Computation of Net Los

Note 4 - Computation of Net Loss Per Common Share	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Earnings Per Share [Text Block]	4. Basic net loss per share (“EPS”) is computed by dividing net loss by the weighted-average number of common shares outstanding for the period. Where applicable, 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. Stock options and warrants that are out-of-the-money with exercise prices greater than the average market price of the underlying common shares and shares of performance-based restricted stock where the contingency was not three June 30, 2024 not 300,000 not . three June 30, 2023 not 1,000,000 not . The following table reconciles the numerators and denominators of the earnings per share calculation for the three June 30, 2024 2023 Three Months Ended June 30, 2024 2023 Numerator: Net loss $ (2,524 ) $ (5,398 ) Denominator: Weighted-average shares of common stock outstanding 36,991 29,706 Weighted-average shares subject to repurchase (1,315 ) (1,448 ) Shares used in per-share calculation ― basic 35,676 28,258 Shares used in per-share calculation ― diluted 35,676 28,258 Net loss per share ― basic $ (0.07 ) $ (0.19 ) Net loss per share ― diluted $ (0.07 ) $ (0.19 )

Note 5 - Goodwill and Other Int

Note 5 - Goodwill and Other Intangibles	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Goodwill and Intangible Assets Disclosure [Text Block]	5. Goodwill Goodwill represents the difference between the purchase price and the fair value of the identifiable tangible and intangible net assets when accounted for using the purchase method of accounting. Goodwill is not February 28th not There were no three June 30, 2024 March 31, 2024 The Company did not three June 30, 2024 Other Intangibles Intangible assets at June 30, 2024 March 31, 2024 June 30, 2024 March 31, 2024 Gross Amount Accumulated Amortization Net Book Value Gross Amount Accumulated Amortization Net Book Value Estimated Useful Life Backlog 681 (681 ) — 681 (681 ) $ — 2 Trade name and trademarks 1,800 — 1,800 1,800 — 1,800 Indefinite Customer relationships 9,600 (6,941 ) 2,659 9,600 (6,649 ) 2,951 7 Core technology and know-how 5,970 (4,472 ) 1,498 5,970 (4,352 ) 1,618 5-10 Intangible assets $ 18,051 $ (12,094 ) $ 5,957 $ 18,051 $ (11,682 ) $ 6,369 The Company recorded intangible amortization expense related to customer relationship and core technology and know-how of $0.4 million in the three June 30, 2024 three June 30, 2023 . no three June 30, 2024 three June 30, 2023 . Expected future amortization expense related to intangible assets is as follows (in thousands): Years ending March 31, Total 2025 1,236 2026 1,221 2027 1,085 2028 543 2029 72 Total $ 4,157 The Company's intangible assets relate entirely to the Grid business segment operations in the United States.

Note 6 - Fair Value Measurement

Note 6 - Fair Value Measurements	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Fair Value Disclosures [Text Block]	6. 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 three June 30, 2024 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 Contingent Consideration Contingent consideration relates to the earnout payment set forth in the Stock Purchase Agreement governing the acquisition of Northeast Power Systems, Inc ("NEPSI") that provides that the selling stockholders may four September 30, 2024. See Note 13 The following table provides the assets and liabilities carried at fair value on a recurring basis, measured as of June 30, 2024 March 31, 2024 Total Carrying Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) June 30, 2024: Assets: Cash equivalents $ 70,272 $ 70,272 $ — $ — Derivative liabilities: Contingent consideration $ 7,020 $ — $ — $ 7,020 Total Carrying Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) March 31, 2024 Assets: Cash equivalents $ 72,832 $ 72,832 $ — $ — Derivative liabilities: Contingent consideration $ 3,100 $ — $ — $ 3,100 The table below reflects the activity for the Company’s contingent consideration derivative liability measured at fair value on a recurring basis (in thousands): Acquisition Contingent Consideration Balance at March 31, 2023 $ 1,270 Change in fair value 4,922 Settlement of contingent consideration (3,092 ) Balance at March 31, 2024 3,100 Change in fair value 3,920 Balance at June 30, 2024 $ 7,020

Note 7 - Accounts Receivable

Note 7 - Accounts Receivable	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Accounts Receivable [Text Block]	7. Accounts receivable at June 30, 2024 March 31, 2024 June 30, 2024 March 31, 2024 Accounts receivable (billed) $ 18,611 $ 20,175 Accounts receivable (unbilled) 4,918 6,150 Accounts receivable, net $ 23,529 $ 26,325

Note 8 - Inventory

Note 8 - Inventory	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Inventory Disclosure [Text Block]	8. Inventory, net of reserves, at June 30, 2024 March 31, 2024 June 30, 2024 March 31, 2024 Raw materials $ 21,340 $ 20,622 Work-in-process 15,455 14,872 Finished goods 4,320 3,840 Deferred program costs 4,034 2,523 Net inventory $ 45,149 $ 41,857 The Company recorded inventory write-downs of $0.5 million and $0.4 million or the three June 30, 2024 and 2023 , respectively. Deferred program costs as of June 30, 2024 March 31, 2024

Note 9 - Prepaid and Other Curr

Note 9 - Prepaid and Other Current Assets	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Prepaid and Other Current Assets [Text Block]	9. During fiscal 2022, 2020 2021. first second 2021 first 2020. As accounting for payroll tax credits are not 740, Income Taxes 20, Accounting for Government Grants and Disclosure of Government Assistance 20, three March 31, 2021 June 30, 2021 three March 31, 2020. The Company recorded a $3.3 million receivable in prepaid expenses and other current assets and a benefit of $1.8 million to cost of revenues, $0.8 million to selling, general, and administrative and $0.7 million to research and development in the fiscal year ended March 31, 2023 March 31, 2024, three June 30, 2024 not 2024.

Note 10 - Property, Plant and E

Note 10 - Property, Plant and Equipment	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	10. The cost and accumulated depreciation of property, plant and equipment at June 30, 2024 March 31, 2024 June 30, 2024 March 31, 2024 Land $ 980 $ 980 Construction in progress – equipment 291 226 Buildings 5,515 5,416 Equipment and software 44,159 44,095 Furniture and fixtures 1,553 1,526 Leasehold improvements 6,990 6,990 Property, plant and equipment, gross 59,488 59,233 Less accumulated depreciation (48,959 ) (48,372 ) Property, plant and equipment, net $ 10,529 $ 10,861 Depreciation expense was $0.6 million for each of the three June 30, 2024 2023

Note 11 - Accounts Payable and

Note 11 - Accounts Payable and Accrued Expenses	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	11. Accounts payable and accrued expenses at June 30, 2024 March 31, 2024 June 30, 2024 March 31, 2024 Accounts payable $ 3,754 $ 4,476 Accrued inventories in-transit 2,672 539 Accrued other miscellaneous expenses 2,548 2,366 Accrued contract loss 97 97 Advanced deposits 4,242 2,270 Accrued compensation 5,059 10,326 Income taxes payable 170 346 Accrued product warranty 2,542 2,363 Accrued commissions 1,225 1,452 Total $ 22,309 $ 24,235 The Company generally provides a one three Product warranty activity was as follows (in thousands): Three Months Ended June 30, 2024 2023 Balance at beginning of period $ 2,363 $ 2,638 Provisions for warranties during the period 476 208 Settlements during the period (297 ) (920 ) Balance at end of period $ 2,542 $ 1,926

Note 12 - Income Taxes

Note 12 - Income Taxes	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Income Tax Disclosure [Text Block]	12. The Company recorded income tax expense of $0.2 million in the three June 30, 2024 three June 30, 2023 Accounting for income taxes requires a two first not second 50% not not three June 30, 2024 not June 30, 2024

Note 13 - Contingent Considerat

Note 13 - Contingent Consideration	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Business Combination, Contingent Consideration [Text Block]	13. On October 1, 2020 ( may four March 31, 2024, not 300,000 September 30, 2024. The Company evaluated the NEPSI Acquisition earnout payment set forth in the NEPSI Stock Purchase Agreement, which is expected to require settlement in the Company's common stock, and determined the contingent consideration qualified for liability classification and derivative treatment under ASC 815, Derivatives and Hedging Following is a summary of the key assumptions used in a Monte Carlo simulation to calculate the fair value of the contingent consideration related to the NEPSI Acquisition: June 30, Fiscal Year 2024 2024 Revenue risk premium 5.50 % Revenue volatility 27.5 % Stock Price $ 23.39 Payment delay (days) 80 Fair value (millions) $ 7.0 March 31, December 31, September 30, June 30, March 31, Fiscal Year 2023 2024 2023 2023 2023 2023 Revenue risk premium 5.50 % 5.70 % 5.30 % 5.20 % 5.30 % Revenue volatility 24.8 % 24.8 % 27.5 % 22.5 % 25 % Stock Price $ 13.51 $ 11.14 $ 7.55 $ 6.26 $ 4.91 Payment delay (days) 80 80 80 80 80 Fair value (millions) $ 3.1 $ 1.2 $ 3.5 $ 2.6 $ 1.3 The Company recorded losses of $3.9 million and $1.3 million resulting from the increases in the fair value of the contingent consideration in the three June 30, 2024 2023

Note 14 - Debt

Note 14 - Debt	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Debt Disclosure [Text Block]	14. As part of the acquisition of Neeltran, the Company identified four May 6, 2021. e was less than $0.1 million as of both June 30, 2024 March 31, 2024

Note 15 - Leases

Note 15 - Leases	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Lessee, Operating Leases [Text Block]	15. Operating Leases 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 real estate lease agreements generally provide for fixed minimum rental payments and the payment of real estate taxes and insurance. Many of these real estate 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 assets and lease liability accounts if they are for a term of longer than twelve Finance Leases As of June 30, 2024 , the right-of-use asset related to the finance lease is fully amortized, and is included in the property and equipment, net on the Company's consolidated balance sheet. Finance lease right-of-use assets and lease liabilities are recognized similar to an operating lease, at the lease commencement date or the date the lessor makes the leased asset available for use. Finance lease right-of-use assets are generally amortized on a straight-line basis over the lease term, and the carrying amount of the finance lease liabilities are ( 1 not 2 Supplemental balance sheet information related to leases at June 30, 2024 March 31, 2024 June 30, 2024 March 31, 2024 Leases: Right-of-use assets – Operating $ 4,096 $ 2,557 Total right-of-use assets 4,096 2,557 Lease liabilities – ST Operating $ 862 $ 716 Lease liabilities – LT Operating 3,359 1,968 Total lease liabilities $ 4,221 $ 2,684 Weighted-average remaining lease term 5.41 3.49 Weighted-average discount rate 12.65 % 9.83 % The costs related to the Company's finance lease are not three June 30, 2024 2023 Three Months Ended June 30, 2024 Operating Leases: Operating lease costs – fixed $ 309 Operating lease costs – variable 45 Short-term lease costs 38 Total lease costs $ 392 Three Months Ended June 30, 2023 Operating Leases: Operating lease costs – fixed $ 259 Operating lease costs – variable 40 Short-term lease costs 37 Total lease costs $ 336 The Company’s estimated minimum future lease obligations under the Company's leases are as follows (in thousands): Leases Year ending March 31, 2025 $ 986 2026 1,319 2027 1,181 2028 823 2029 404 Thereafter 1,511 Total minimum lease payments 6,224 Less: interest (2,003 ) Present value of lease liabilities $ 4,221

Note 16 - Commitments and Conti

Note 16 - Commitments and Contingencies	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	16. 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 condensed 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 condensed 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 June 30, 2024 March 31, 2024

Note 17 - Business Segments

Note 17 - Business Segments	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	17. The Company reports its financial results in two 280 , Segment Reporting four one 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 results for the two Three Months Ended June 30, 2024 2023 Revenues: Grid $ 32,336 $ 25,737 Wind 7,954 4,517 Total $ 40,290 $ 30,254 Three Months Ended June 30, 2024 2023 Operating income (loss): Grid $ 859 $ (1,971 ) Wind 999 (649 ) Unallocated corporate expenses (5,149 ) (2,713 ) Total $ (3,291 ) $ (5,333 ) 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 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 three June 30, 2024 2023 September 30, 2024. Additionally, unallocated corporate expenses consisted of stock-based compensation expense of $ million and million in the three months ended June 30, 2024 and 2023 , respectively Total assets for the two June 30, 2024 March 31, 2024 June 30, 2024 March 31, 2024 Grid $ 128,296 $ 125,878 Wind 16,355 14,733 Corporate assets 95,492 92,160 Total $ 240,143 $ 232,771

Note 18 - Recent Accounting Pro

Note 18 - Recent Accounting Pronouncements	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Accounting Standards Update and Change in Accounting Principle [Text Block]	18. In November 2023, 2023 07, Segment Reporting (Topic 280 2023 07 2023 07 November 2023, December 15, 2024. June 30, 2024, In December 2023, 2023 09, Income Taxes (Topic 740 2023 09 2023 09 December 2023, December 15, 2024. June 30, 2024, In March 2024, 2024 02, Codification Improvements Amendments to Remove References to the Concepts Statements 2024 02 2024 02 March 2024, December 15, 2024. June 30, 2024,

Note 19 - Subsequent Events

Note 19 - Subsequent Events	3 Months Ended
	Jun. 30, 2024
Notes to Financial Statements
Subsequent Events [Text Block]	19. The Company has performed an evaluation of subsequent events through the time of filing this Quarterly Report on Form 10 no Acquisition of Megatran As described in Note 1, Pursuant to the Stock Purchase Agreement, the Company acquired all of the issued and outstanding shares of Megatran, for aggregate consideration in an amount equal to $61,350,000 (the “Purchase Price”), which consideration amount shall be subject to various adjustments set forth in the Stock Purchase Agreement (including those described below) and consists of: (a) (i) $25,000,000, minus (ii) the Indebtedness (as defined in the Stock Purchase Agreement) outstanding as of immediately prior to the closing, minus (iii) Company Expenses (as defined in the Stock Purchase Agreement) (collectively, the “Cash Purchase Price”); (b) a number of restricted shares (rounded up or down to the nearest whole share, as applicable) (the “Company Shares”) of the Company’s common stock, $.01 par value per share (“Common Stock”) equal to the quotient obtained by dividing ( x 5.6 The Acquisition completed by the Company subsequent to the three June 30, 2024 805, Business Combinations The total purchase price of approximately $61.4 million includes the fair value of shares of the Company’s common stock issued at closing, and cash paid, as follows (in millions): Cash payment 30.0 Issuance of 1,297,600 shares of Company’s Common Stock 31.4 At the Acquisition Date, in addition to the $30.0 million cash, the Company valued the Company’s common stock, using $24.16 per share, which was the closing price on the day prior to the day that the Company acquired Megatran. Acquisition costs are expected to be $0.8 million and will be recorded in selling, general and administrative ("SG&A") costs. Acquisition costs are of $0.2 million were included in SG&A for the three June 30, 2024. The following table summarizes the allocation of the purchase price based on the estimated fair values of the assets acquired and liabilities assumed and related deferred income taxes in connection with the Acquisition (in millions): Cash and cash equivalents $ 0.5 Investment in joint venture 1.2 Prepaid and other current assets 1.4 Accounts receivable 16.7 Inventory 22.6 Property plant and equipment 28.4 Accrued expenses (3.2 ) Accounts payable (4.4 ) Deferred revenue (4.5 ) Other (0.1 ) Deferred tax liability (6.5 ) Net tangible assets/(liabilities) 52.1 Backlog 0.7 Customer relationships 1.3 Net identifiable intangible assets 2.0 Goodwill 7.3 Total purchase consideration $ 61.4 The fair value of the financial assets acquired includes receivables with a fair value of $16.7 million. The gross amount due is $17.5 million, of which $0.8 million is expected to be uncollectible. Inventory includes a $0.7 million adjustment to step up the inventory balance to fair value consistent with the purchase price allocation. The fair value was determined based on the estimated selling price of the inventory, less the remaining manufacturing and selling cost and a normal profit margin on those manufacturing and selling efforts. Backlog of $0.7 million was evaluated using the multi period excess earnings method under the income approach. The contracts with customers do not two Customer relationships of $1.3 million relates to customers currently under contract and was determined based on a multi period excess earnings method under the income approach. The method of amortization being utilized is the economic consumption over 10 years with the expense being allocated to SG&A. Goodwill represents the value associated with the acquired workforce and expected synergies related to the business combination of the two not not may August 1, 2024. no August 1, 2025. Unaudited Pro Forma Operating Results The unaudited pro forma condensed consolidated statement of operations for the year ended March 31, 2024 three June 30, 2024 April 1, 2023 April 1, 2024, Three months ended June 30, Year Ended March 31, 2024 2024 Revenues $ 59,310 $ 217,954 Operating loss (2,702 ) (7,140 ) Net loss $ (1,760 ) $ (4,152 ) Net loss per common share Basic 36,974 31,123 Diluted 36,974 31,123 Shares - basic $ (0.05 ) $ (0.13 ) Shares - diluted $ (0.05 ) $ (0.13 ) The pro forma amounts include the historical operating results of the Company and Megatran with appropriate adjustments that give effect to acquisition related costs, income taxes, intangible amortization resulting from the Acquisition and certain conforming accounting policies of the Company. The pro forma amounts are not not

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024
Insider Trading Arr Line Items
Material Terms of Trading Arrangement [Text Block]	5. OTHER INFORMATION (a) None (b) None (c) During the three June 30, 2024 no 10b5 1 10b5 1 408
Rule 10b5-1 Arrangement Adopted [Flag]	false
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false

Note 2 - Revenue Recognition (T

Note 2 - Revenue Recognition (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Disaggregation of Revenue [Table Text Block]	Three Months Ended June 30, 2024 Product Line: Grid Wind Equipment and systems $ 29,726 $ 7,424 Services and technology development 2,610 530 Total $ 32,336 $ 7,954 Region: Americas $ 30,479 $ — Asia Pacific 1,199 7,952 EMEA 658 2 Total $ 32,336 $ 7,954 Three Months Ended June 30, 2023 Product Line: Grid Wind Equipment and systems $ 23,126 $ 3,982 Services and technology development 2,611 535 Total $ 25,737 $ 4,517 Region: Americas $ 23,161 $ — Asia Pacific 1,711 4,465 EMEA 865 52 Total $ 25,737 $ 4,517
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]	Unbilled Accounts Receivable Deferred Program Costs Contract Liabilities Beginning balance as of March 31, 2024 $ 6,150 $ 2,523 $ 57,829 Increases for costs incurred to fulfill performance obligations — 2,119 — Increase (decrease) due to customer billings (3,521 ) — 27,577 Decrease due to cost recognition on completed performance obligations — (606 ) — Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations 2,291 — (22,443 ) Other changes and FX impact (2 ) (2 ) (50 ) Ending balance as of June 30, 2024 $ 4,918 $ 4,034 $ 62,913 Unbilled Accounts Receivable Deferred Program Costs Contract Liabilities Beginning balance as of March 31, 2023 $ 9,958 $ 2,136 $ 50,760 Increases for costs incurred to fulfill performance obligations — 1,084 — Increase (decrease) due to customer billings (9,479 ) — 16,308 Decrease due to cost recognition on completed performance obligations — (1,234 ) — Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations 5,092 — (8,974 ) Other changes and FX impact 1 — (11 ) Ending balance as of June 30, 2023 $ 5,572 $ 1,986 $ 58,083
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	Three Months Ended Reportable June 30, Segment 2024 2023 Inox Wind Limited Wind 18 % 12 %

Note 3 - Stock-based Compensa_2

Note 3 - Stock-based Compensation (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	Three Months Ended June 30, 2024 2023 Cost of revenues $ 58 $ 109 Research and development 143 156 Selling, general and administrative 1,028 1,092 Total $ 1,229 $ 1,357

Note 4 - Computation of Net L_2

Note 4 - Computation of Net Loss Per Common Share (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended June 30, 2024 2023 Numerator: Net loss $ (2,524 ) $ (5,398 ) Denominator: Weighted-average shares of common stock outstanding 36,991 29,706 Weighted-average shares subject to repurchase (1,315 ) (1,448 ) Shares used in per-share calculation ― basic 35,676 28,258 Shares used in per-share calculation ― diluted 35,676 28,258 Net loss per share ― basic $ (0.07 ) $ (0.19 ) Net loss per share ― diluted $ (0.07 ) $ (0.19 )

Note 5 - Goodwill and Other I_2

Note 5 - Goodwill and Other Intangibles (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	June 30, 2024 March 31, 2024 Gross Amount Accumulated Amortization Net Book Value Gross Amount Accumulated Amortization Net Book Value Estimated Useful Life Backlog 681 (681 ) — 681 (681 ) $ — 2 Trade name and trademarks 1,800 — 1,800 1,800 — 1,800 Indefinite Customer relationships 9,600 (6,941 ) 2,659 9,600 (6,649 ) 2,951 7 Core technology and know-how 5,970 (4,472 ) 1,498 5,970 (4,352 ) 1,618 5-10 Intangible assets $ 18,051 $ (12,094 ) $ 5,957 $ 18,051 $ (11,682 ) $ 6,369
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Years ending March 31, Total 2025 1,236 2026 1,221 2027 1,085 2028 543 2029 72 Total $ 4,157

Note 6 - Fair Value Measureme_2

Note 6 - Fair Value Measurements (Tables)	3 Months Ended
	Jun. 30, 2024
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) June 30, 2024: Assets: Cash equivalents $ 70,272 $ 70,272 $ — $ — Derivative liabilities: Contingent consideration $ 7,020 $ — $ — $ 7,020 Total Carrying Value Quoted Prices in Active Markets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) March 31, 2024 Assets: Cash equivalents $ 72,832 $ 72,832 $ — $ — Derivative liabilities: Contingent consideration $ 3,100 $ — $ — $ 3,100
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	Acquisition Contingent Consideration Balance at March 31, 2023 $ 1,270 Change in fair value 4,922 Settlement of contingent consideration (3,092 ) Balance at March 31, 2024 3,100 Change in fair value 3,920 Balance at June 30, 2024 $ 7,020

Note 7 - Accounts Receivable (T

Note 7 - Accounts Receivable (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Accounts Receivable [Table Text Block]	June 30, 2024 March 31, 2024 Accounts receivable (billed) $ 18,611 $ 20,175 Accounts receivable (unbilled) 4,918 6,150 Accounts receivable, net $ 23,529 $ 26,325

Note 8 - Inventory (Tables)

Note 8 - Inventory (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Schedule of Inventory, Current [Table Text Block]	June 30, 2024 March 31, 2024 Raw materials $ 21,340 $ 20,622 Work-in-process 15,455 14,872 Finished goods 4,320 3,840 Deferred program costs 4,034 2,523 Net inventory $ 45,149 $ 41,857

Note 10 - Property, Plant and_2

Note 10 - Property, Plant and Equipment (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Property, Plant and Equipment [Table Text Block]	June 30, 2024 March 31, 2024 Land $ 980 $ 980 Construction in progress – equipment 291 226 Buildings 5,515 5,416 Equipment and software 44,159 44,095 Furniture and fixtures 1,553 1,526 Leasehold improvements 6,990 6,990 Property, plant and equipment, gross 59,488 59,233 Less accumulated depreciation (48,959 ) (48,372 ) Property, plant and equipment, net $ 10,529 $ 10,861

Note 11 - Accounts Payable an_2

Note 11 - Accounts Payable and Accrued Expenses (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]	June 30, 2024 March 31, 2024 Accounts payable $ 3,754 $ 4,476 Accrued inventories in-transit 2,672 539 Accrued other miscellaneous expenses 2,548 2,366 Accrued contract loss 97 97 Advanced deposits 4,242 2,270 Accrued compensation 5,059 10,326 Income taxes payable 170 346 Accrued product warranty 2,542 2,363 Accrued commissions 1,225 1,452 Total $ 22,309 $ 24,235
Schedule of Product Warranty Liability [Table Text Block]	Three Months Ended June 30, 2024 2023 Balance at beginning of period $ 2,363 $ 2,638 Provisions for warranties during the period 476 208 Settlements during the period (297 ) (920 ) Balance at end of period $ 2,542 $ 1,926

Note 13 - Contingent Consider_2

Note 13 - Contingent Consideration (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]	June 30, Fiscal Year 2024 2024 Revenue risk premium 5.50 % Revenue volatility 27.5 % Stock Price $ 23.39 Payment delay (days) 80 Fair value (millions) $ 7.0 March 31, December 31, September 30, June 30, March 31, Fiscal Year 2023 2024 2023 2023 2023 2023 Revenue risk premium 5.50 % 5.70 % 5.30 % 5.20 % 5.30 % Revenue volatility 24.8 % 24.8 % 27.5 % 22.5 % 25 % Stock Price $ 13.51 $ 11.14 $ 7.55 $ 6.26 $ 4.91 Payment delay (days) 80 80 80 80 80 Fair value (millions) $ 3.1 $ 1.2 $ 3.5 $ 2.6 $ 1.3

Note 15 - Leases (Tables)

Note 15 - Leases (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Assets And Liabilities Lessee [Table Text Block]	June 30, 2024 March 31, 2024 Leases: Right-of-use assets – Operating $ 4,096 $ 2,557 Total right-of-use assets 4,096 2,557 Lease liabilities – ST Operating $ 862 $ 716 Lease liabilities – LT Operating 3,359 1,968 Total lease liabilities $ 4,221 $ 2,684 Weighted-average remaining lease term 5.41 3.49 Weighted-average discount rate 12.65 % 9.83 %
Lease, Cost [Table Text Block]	Three Months Ended June 30, 2024 Operating Leases: Operating lease costs – fixed $ 309 Operating lease costs – variable 45 Short-term lease costs 38 Total lease costs $ 392 Three Months Ended June 30, 2023 Operating Leases: Operating lease costs – fixed $ 259 Operating lease costs – variable 40 Short-term lease costs 37 Total lease costs $ 336
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]	Leases Year ending March 31, 2025 $ 986 2026 1,319 2027 1,181 2028 823 2029 404 Thereafter 1,511 Total minimum lease payments 6,224 Less: interest (2,003 ) Present value of lease liabilities $ 4,221

Note 17 - Business Segments (Ta

Note 17 - Business Segments (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Three Months Ended June 30, 2024 2023 Revenues: Grid $ 32,336 $ 25,737 Wind 7,954 4,517 Total $ 40,290 $ 30,254 Three Months Ended June 30, 2024 2023 Operating income (loss): Grid $ 859 $ (1,971 ) Wind 999 (649 ) Unallocated corporate expenses (5,149 ) (2,713 ) Total $ (3,291 ) $ (5,333 )
Reconciliation of Assets from Segment to Consolidated [Table Text Block]	June 30, 2024 March 31, 2024 Grid $ 128,296 $ 125,878 Wind 16,355 14,733 Corporate assets 95,492 92,160 Total $ 240,143 $ 232,771

Note 19 - Subsequent Events (Ta

Note 19 - Subsequent Events (Tables)	3 Months Ended
	Jun. 30, 2024
Notes Tables
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	Cash payment 30.0 Issuance of 1,297,600 shares of Company’s Common Stock 31.4
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	Cash and cash equivalents $ 0.5 Investment in joint venture 1.2 Prepaid and other current assets 1.4 Accounts receivable 16.7 Inventory 22.6 Property plant and equipment 28.4 Accrued expenses (3.2 ) Accounts payable (4.4 ) Deferred revenue (4.5 ) Other (0.1 ) Deferred tax liability (6.5 ) Net tangible assets/(liabilities) 52.1 Backlog 0.7 Customer relationships 1.3 Net identifiable intangible assets 2.0 Goodwill 7.3 Total purchase consideration $ 61.4
Business Acquisition, Pro Forma Information [Table Text Block]	Three months ended June 30, Year Ended March 31, 2024 2024 Revenues $ 59,310 $ 217,954 Operating loss (2,702 ) (7,140 ) Net loss $ (1,760 ) $ (4,152 ) Net loss per common share Basic 36,974 31,123 Diluted 36,974 31,123 Shares - basic $ (0.05 ) $ (0.13 ) Shares - diluted $ (0.05 ) $ (0.13 )

Note 1 - Nature of the Busine_2

Note 1 - Nature of the Business and Operations and Liquidity (Details Textual) - USD ($)			3 Months Ended	6 Months Ended
	Aug. 01, 2024	Jan. 31, 2024	Jun. 30, 2024	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2024
Retained Earnings (Accumulated Deficit)			$ (1,069,182,000)	$ (1,069,182,000)		$ (1,066,658,000)
Cash, Cash Equivalents, and Marketable Securities			93,500,000	93,500,000
Net Cash Provided by (Used in) Operating Activities			$ (3,400,000)	$ 3,409,000	$ (2,245,000)
Shelf Registration, Maximum Amount to be Sold		$ 250,000,000
Subsequent Event [Member]
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 1
Subsequent Event [Member] | Megatran [Member]
Business Combination, Consideration Transferred	$ 61,350,000
Business Combination, Maximum Adjustment Before Indebtedness	25,000,000
Business Combination, Share Purchase Price Quotient Amount	31,350,000
Business Combination, Potential Additional Cash Payment	$ 5,000,000
Public Offering 2024 [Member]
Stock Issued During Period, Shares, New Issues (in shares)		6,210,000
Shares Issued, Price Per Share (in dollars per share)		$ 11.25
Proceeds from Issuance of Common Stock		$ 65,200,000

Note 2 - Revenue Recognition 1

Note 2 - Revenue Recognition 1 (Details Textual)	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Revenue, Performance Obligation Satisfied, Revenue Recognized, Percentage	88%	76%
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

Note 2 - Revenue Recognition 2

Note 2 - Revenue Recognition 2 (Details Textual) $ in Millions	Jun. 30, 2024 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)	12 months
Revenue, Remaining Performance Obligation, Amount	$ 161
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01
Revenue, Remaining Performance Obligation, Amount	$ 90
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01 | Minimum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)	13 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-07-01 | Maximum [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)	60 months

Note 2 - Revenue Recognition -

Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Revenues	$ 40,290	$ 30,254
Grid [Member]
Revenues	32,336	25,737
Grid [Member] | Americas [Member]
Revenues	30,479	23,161
Grid [Member] | Asia Pacific [Member]
Revenues	1,199	1,711
Grid [Member] | EMEA [Member]
Revenues	658	865
Wind [Member]
Revenues	7,954	4,517
Wind [Member] | Americas [Member]
Revenues	0	0
Wind [Member] | Asia Pacific [Member]
Revenues	7,952	4,465
Wind [Member] | EMEA [Member]
Revenues	2	52
Equipment and Systems [Member] | Grid [Member]
Revenues	29,726	23,126
Equipment and Systems [Member] | Wind [Member]
Revenues	7,424	3,982
Services and Technology Development [Member] | Grid [Member]
Revenues	2,610	2,611
Services and Technology Development [Member] | Wind [Member]
Revenues	$ 530	$ 535

Note 2 - Revenue Recognition _2

Note 2 - Revenue Recognition - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Unbilled AR, ending balance	$ 6,150	$ 9,958
Deferred Program Costs, ending balance	2,523	2,136
Contract Liabilities, ending balance	57,829	50,760
Deferred Program Costs, increases for costs incurred to fulfill performance obligations	2,119	1,084
Unbilled AR, increase (decrease) due to customer billings	(3,521)	(9,479)
Increase (decrease) due to customer billings	27,577	16,308
Deferred Program Costs, decrease due to cost recognition on completed performance obligations	(606)	(1,234)
Unbilled AR, increase (decrease) due to recognition of revenue based on transfer of control of performance obligations	2,291	5,092
Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations	(22,443)	(8,974)
Other changes and FX impact	(2)	1
Deferred Program Costs, Other changes and foreign currency exchange impact	(2)	0
Contract Liabilities, Other changes and foreign currency exchange impact	(50)	(11)
Ending balance as of June 30, 2024	4,918	5,572
Deferred Program Costs, ending balance	4,034	1,986
Contract Liabilities, ending balance	$ 62,913	$ 58,083

Note 2 - Revenue Recognition _3

Note 2 - Revenue Recognition - Revenues by Major Customers (Details)	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Inox Wind Limited [Member] | Wind [Member]
Concentration of risk, revenue	18%	12%

Note 3 - Stock-based Compensa_3

Note 3 - Stock-based Compensation (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Restricted Stock [Member]
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture (in shares)	25,000	672,500
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 4.1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	1 year 4 months 24 days
Restricted Stock [Member] | Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	2 years
Restricted Stock [Member] | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	3 years
Immediately Vested Common Stock [Member]
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture (in shares)	19,200	53,675
Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)	0	0

Note 3 - Stock-based Compensa_4

Note 3 - Stock-based Compensation - Stock-based Compensation Expense by Financial Statement Line Item (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Total stock-based compensation expense	$ 1,229	$ 1,357
Cost of Sales [Member]
Total stock-based compensation expense	58	109
Research and Development Expense [Member]
Total stock-based compensation expense	143	156
Selling, General and Administrative Expenses [Member]
Total stock-based compensation expense	$ 1,028	$ 1,092

Note 4 - Computation of Net L_3

Note 4 - Computation of Net Loss Per Common Share (Details Textual) - shares	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	336,206	1,071,504
Shares Tied to Derivative Liability [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	300,000	1,000,000
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	36,206	71,504

Note 4 - Computation of Net L_4

Note 4 - Computation of Net Loss Per Common Share - Reconciliation of Numerators and Denominators of EPS Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Net loss	$ (2,524)	$ (5,398)	$ (2,524)	$ (5,398)
Weighted-average shares of common stock outstanding (in shares)	36,991	29,706
Weighted-average shares subject to repurchase (in shares)	(1,315)	(1,448)
Shares used in per-share calculation - basic (in shares)	35,676	28,258
Shares used in per-share calculation - diluted (in shares)	35,676	28,258
Net loss per share - basic (in dollars per share)	$ (0.07)	$ (0.19)
Net loss per share - diluted (in dollars per share)	$ (0.07)	$ (0.19)

Note 5 - Goodwill and Other I_3

Note 5 - Goodwill and Other Intangibles (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Goodwill, Impairment Loss	$ 0
Customer Relationship, Core Technology and Know-how [Member]
Amortization of Intangible Assets	400	$ 500
Backlog [Member]
Amortization of Intangible Assets	$ 0	$ 100

Note 5 - Goodwill and Other I_4

Note 5 - Goodwill and Other Intangibles - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Accumulated Amortization	$ (12,094)	$ (11,682)
Net Book Value	4,157
Intangible assets, gross amount	18,051	18,051
Intangible assets, net	5,957	6,369
Trade Names [Member]
Trade name and trademarks	1,800	1,800
Backlog [Member]
Gross Amount	681	681
Accumulated Amortization	(681)	(681)
Net Book Value	$ 0	0
Estimated Useful Life (Year)	2 years
Customer Relationships [Member]
Gross Amount	$ 9,600	9,600
Accumulated Amortization	(6,941)	(6,649)
Net Book Value	$ 2,659	2,951
Estimated Useful Life (Year)	7 years
Core Technology and Know-how [Member]
Gross Amount	$ 5,970	5,970
Accumulated Amortization	(4,472)	(4,352)
Net Book Value	$ 1,498	$ 1,618
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 5 - Goodwill and Other I_5

Note 5 - Goodwill and Other Intangibles - Expected Future Amortization Expense (Details) $ in Thousands	Jun. 30, 2024 USD ($)
2025	$ 1,236
2026	1,221
2027	1,085
2028	543
2029	72
Total	$ 4,157

Note 6 - Fair Value Measureme_3

Note 6 - Fair Value Measurements (Details Textual) - shares	Jun. 30, 2024	Oct. 01, 2020
Northeast Power Systems, Inc (NEPSI) [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High, Number of Shares (in shares)	1,000,000	1,000,000

Note 6 - Fair Value Measureme_4

Note 6 - Fair Value Measurements - Assets and Liabilities Carried at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Contingent consideration	$ 7,000	$ 3,100	$ 1,200	$ 3,500	$ 2,600	$ 1,300
Fair Value, Recurring [Member] | Reported Value Measurement [Member]
Cash equivalents	70,272	72,832
Contingent consideration	7,020	3,100
Fair Value, Recurring [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]
Cash equivalents	70,272	72,832
Contingent consideration	0	0
Fair Value, Recurring [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Cash equivalents	0	0
Contingent consideration	0	0
Fair Value, Recurring [Member] | Reported Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Cash equivalents	0	0
Contingent consideration	$ 7,020	$ 3,100

Note 6 - Fair Value Measureme_5

Note 6 - Fair Value Measurements - Derivative Liability Measured at Fair value (Details) - Derivative Financial Instruments, Liabilities [Member] - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Balance		$ 1,270
Change in fair value	$ 3,920	4,922
Settlement of contingent consideration		(3,092)
Balance	$ 7,020	$ 3,100

Note 7 - Accounts Receivable -

Note 7 - Accounts Receivable - Summary of Accounts Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Accounts receivable (billed)	$ 18,611	$ 20,175
Accounts receivable (unbilled)	4,918	6,150
Accounts receivable, net	$ 23,529	$ 26,325

Note 8 - Inventory (Details Tex

Note 8 - Inventory (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Inventory Write-down	$ 500	$ 400	$ 503	$ 384

Note 8 - Inventory - Summary of

Note 8 - Inventory - Summary of Net Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Raw materials	$ 21,340	$ 20,622
Work-in-process	15,455	14,872
Finished goods	4,320	3,840
Deferred program costs	4,034	2,523
Net inventory	$ 45,149	$ 41,857

Note 9 - Prepaid and Other Cu_2

Note 9 - Prepaid and Other Current Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Jun. 30, 2024	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2022
Employee Retention Credits Receivable						$ 3,300
Proceeds From Employee Retention Credit			$ 0	$ 3,000
Cost of Sales [Member]
Employee Retention Credits Benefit					$ 1,800
Selling, General and Administrative Expenses [Member]
Employee Retention Credits Benefit					800
Research and Development Expense [Member]
Employee Retention Credits Benefit					700
Prepaid Expenses and Other Current Assets [Member]
Employee Retention Credits Receivable			$ 300		$ 3,300
Maximum [Member]
Percentage of Qualified Wages Paid	70%	50%

Note 10 - Property, Plant and_3

Note 10 - Property, Plant and Equipment (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Depreciation, Depletion and Amortization	$ 0.6	$ 0.6

Note 10 - Property, Plant and_4

Note 10 - Property, Plant and Equipment - Cost and Accumulated Depreciation of Property and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Property, plant and equipment, gross	$ 59,488	$ 59,233
Less accumulated depreciation	(48,959)	(48,372)
Property, plant and equipment, net	10,529	10,861
Land [Member]
Property, plant and equipment, gross	980	980
Construction in Progress [Member]
Property, plant and equipment, gross	291	226
Building [Member]
Property, plant and equipment, gross	5,515	5,416
Equipment and Software [Member]
Property, plant and equipment, gross	44,159	44,095
Furniture and Fixtures [Member]
Property, plant and equipment, gross	1,553	1,526
Leasehold Improvements [Member]
Property, plant and equipment, gross	$ 6,990	$ 6,990

Note 11 - Accounts Payable an_3

Note 11 - Accounts Payable and Accrued Expenses (Details Textual)	3 Months Ended
	Jun. 30, 2024
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	Jun. 30, 2024	Mar. 31, 2024
Accounts payable	$ 3,754	$ 4,476
Accrued inventories in-transit	2,672	539
Accrued other miscellaneous expenses	2,548	2,366
Accrued contract loss	97	97
Advanced deposits	4,242	2,270
Accrued compensation	5,059	10,326
Income taxes payable	170	346
Accrued product warranty	2,542	2,363
Accrued commissions	1,225	1,452
Total	$ 22,309	$ 24,235

Note 11 - Accounts Payable an_5

Note 11 - Accounts Payable and Accrued Expenses - Product Warranty Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Balance at beginning of period	$ 2,363	$ 2,638
Provisions for warranties during the period	476	208
Settlements during the period	(297)	(920)
Balance at end of period	$ 2,542	$ 1,926

Note 12 - Income Taxes (Details

Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Income Tax Expense (Benefit)	$ 193	$ 121
Liability for Uncertainty in Income Taxes, Current	0
Unrecognized Tax Benefits	$ 0

Note 13 - Contingent Consider_3

Note 13 - Contingent Consideration (Details Textual) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	Oct. 01, 2020	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2024
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		$ 3,920	$ 1,350	$ 3,920	$ 1,350
Northeast Power Systems, Inc (NEPSI) [Member]
Payments to Acquire Businesses, Gross	$ 26,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)	873,657					399,999
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High, Number of Shares (in shares)	1,000,000	1,000,000		1,000,000
Business Combination, Contingent Consideration Arrangements, Number of Issuable Shares (in shares)						300,000

Note 13 - Contingent Consider_4

Note 13 - Contingent Consideration - Summary of the Key Assumptions Used to Calculate Fair Value of Warrants (Details) $ in Millions	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)
Contingent consideration	$ 7	$ 3.1	$ 1.2	$ 3.5	$ 2.6	$ 1.3
Measurement Input, Revenue Risk Premium [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	5.5	5.5	5.7	5.3	5.2	5.3
Measurement Input, Revenue Volatility [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	27.5	24.8	24.8	27.5	22.5	25
Measurement Input, Share Price [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	23.39	13.51	11.14	7.55	6.26	4.91
Measurement Input, Payment Delay [Member]
Business Combination, Contingent Consideration, Liability, Measurement Input	80	80	80	80	80	80

Note 14 - Debt (Details Textual

Note 14 - Debt (Details Textual) $ in Thousands	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	May 06, 2021
Debt, Current	$ 9	$ 25
Equipment Financing Agreements Assumed In Business Acquisition [Member]
Debt, Current	$ 100	$ 100
Neeltran Inc. [Member]
Business Combination, Number of Equipment Financing Agreement Assumed			4

Note 15 - Leases (Details Textu

Note 15 - Leases (Details Textual)	Jun. 30, 2024
Maximum [Member]
Lessee, Operating Lease, Renewal Term (Year)	5 years

Note 15 - Leases - Operating Le

Note 15 - Leases - Operating Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Right-of-use assets – Operating	$ 4,096	$ 2,557
Total right-of-use assets	4,096	2,557
Lease liabilities – ST Operating	862	716
Lease liabilities – LT Operating	3,359	1,968
Total lease liabilities	$ 4,221	$ 2,684
Weighted-average remaining lease term (Year)	5 years 4 months 28 days	3 years 5 months 26 days
Weighted-average discount rate	12.65%	9.83%

Note 15 - Leases - Lease Cost (

Note 15 - Leases - Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating lease costs – fixed	$ 309	$ 259
Operating lease costs – variable	45	40
Short-term lease costs	38	37
Total lease costs	$ 392	$ 336

Note 15 - Leases - Minimum Futu

Note 15 - Leases - Minimum Future Lease Obligation (Details) $ in Thousands	Jun. 30, 2024 USD ($)
2025	$ 986
2026	1,319
2027	1,181
2028	823
2029	404
Thereafter	1,511
Total minimum lease payments	6,224
Less: interest	(2,003)
Present value of lease liabilities	$ 4,221

Note 16 - Commitments and Con_2

Note 16 - Commitments and Contingencies (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Restricted Cash and Cash Equivalents, Noncurrent	$ 1,600	$ 1,290
Restricted Cash and Cash Equivalents, Current	$ 500	$ 500

Note 17 - Business Segments (De

Note 17 - Business Segments (Details Textual) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($) shares	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) shares	Jun. 30, 2023 USD ($)	Mar. 31, 2024
Number of Reportable Segments					2
Number of Operating Segments					4
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ 3,920	$ 1,350	$ 3,920	$ 1,350
Share-Based Payment Arrangement, Expense	1,229	1,357
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ 3,900	1,300
Potential Stock To Be Distributed (in shares) | shares	300,000		300,000
Share-Based Payment Arrangement, Expense	$ 1,200	$ 1,400

Note 17 - Business Segments - O

Note 17 - Business Segments - Operating Results for Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Revenues	$ 40,290	$ 30,254
Operating Income (loss)	(3,291)	(5,333)
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Operating Income (loss)	(5,149)	(2,713)
Grid [Member]
Revenues	32,336	25,737
Grid [Member] | Operating Segments [Member]
Revenues	32,336	25,737
Operating Income (loss)	859	(1,971)
Wind [Member]
Revenues	7,954	4,517
Wind [Member] | Operating Segments [Member]
Revenues	7,954	4,517
Operating Income (loss)	$ 999	$ (649)

Note 17 - Business Segments - T

Note 17 - Business Segments - Total Business Segments Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Total assets	$ 240,143	$ 232,771
Operating Segments [Member] | Grid [Member]
Total assets	128,296	125,878
Operating Segments [Member] | Wind [Member]
Total assets	16,355	14,733
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Total assets	$ 95,492	$ 92,160

Note 19 - Subsequent Events (De

Note 19 - Subsequent Events (Details Textual) - USD ($)		3 Months Ended
	Aug. 01, 2024	Jun. 30, 2024
Megatran [Member] | Selling, General and Administrative Expenses [Member]
Business Combination, Acquisition Related Costs		$ 200,000
Subsequent Event [Member]
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 1
Subsequent Event [Member] | Megatran [Member]
Business Combination, Consideration Transferred	$ 61,350,000
Business Combination, Maximum Adjustment Before Indebtedness	25,000,000
Business Combination, Share Purchase Price Quotient Amount	31,350,000
Business Combination, Potential Additional Cash Payment	5,000,000
Payments to Acquire Businesses, Gross	$ 30,000,000
Business Acquisition, Share Price (in dollars per share)	$ 24.16
Business Acquisition, Transaction Costs	$ 800,000
Business Combination, Acquired Receivable, Fair Value	16,700,000
Business Combination, Acquired Receivables, Gross Contractual Amount	17,500,000
Business Combination, Acquired Receivables, Estimated Uncollectible	800,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory	700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	2,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	6,500,000
Subsequent Event [Member] | Megatran [Member] | Backlog [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 700,000
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year)	2 years
Subsequent Event [Member] | Megatran [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 1,300,000
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year)	10 years

Note 19 - Subsequent Events - A

Note 19 - Subsequent Events - Acquisition (Details) - Subsequent Event [Member] - Megatran [Member] $ in Millions	Aug. 01, 2024 USD ($)
Cash payment	$ 30
Issuance of 1,297,600 shares of Company’s Common Stock	$ 31.4

Note 19 - Subsequent Events -_2

Note 19 - Subsequent Events - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Aug. 01, 2024	Jun. 30, 2024	Mar. 31, 2024
Goodwill		$ 43,471	$ 43,471
Megatran [Member] | Subsequent Event [Member]
Cash and cash equivalents	$ 500
Investment in joint venture	1,200
Prepaid and other current assets	1,400
Accounts receivable	16,700
Inventory	22,600
Property plant and equipment	28,400
Accrued expenses	(3,200)
Accounts payable	(4,400)
Deferred revenue	(4,500)
Other	(100)
Deferred tax liability	(6,500)
Net tangible assets/(liabilities)	52,100
Intangible assets	2,000
Goodwill	7,300
Total purchase consideration	61,400
Megatran [Member] | Subsequent Event [Member] | Backlog [Member]
Intangible assets	700
Megatran [Member] | Subsequent Event [Member] | Customer Relationships [Member]
Intangible assets	$ 1,300

Note 19 - Subsequent Events - P

Note 19 - Subsequent Events - Pro Forma Information (Details) - Megatran [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2024	Mar. 31, 2024
Revenues	$ 59,310	$ 217,954
Operating loss	(2,702)	(7,140)
Net loss	$ (1,760)	$ (4,152)
Basic (in dollars per share)	$ 36,974	$ 31,123
Diluted (in dollars per share)	$ 36,974	$ 31,123
Shares - basic (in shares)	(50)	(130)
Shares - diluted (in shares)	(50)	(130)