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Note 3 - Revenue Recognition (Tables)

9 Months Ended

Dec. 31, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Three Months Ended December 31, 2021								Nine Months Ended December 31, 2021
Product Line:		Grid				Wind				Grid				Wind
Equipment and systems		$	23,416			$	1,309			$	67,605			$	4,168
Services and technology development			1,634				440				5,564				2,789
Total		$	25,050			$	1,749			$	73,169			$	6,957
Region:
Americas		$	16,739			$	56			$	57,498			$	134
Asia Pacific			7,064				1,690				10,931				6,781
EMEA			1,247				3				4,740				42
Total		$	25,050			$	1,749			$	73,169			$	6,957

		Three Months Ended December 31, 2020								Nine Months Ended December 31, 2020
Product Line:		Grid				Wind				Grid				Wind
Equipment and systems		$	15,930			$	6,153			$	47,729			$	12,828
Services and technology development			1,156				393				3,420				1,984
Total		$	17,086			$	6,546			$	51,149			$	14,812
Region:
Americas		$	13,394			$	14			$	39,626			$	56
Asia Pacific			351				6,461				6,736				14,463
EMEA			3,341				71				4,787				293
Total		$	17,086			$	6,546			$	51,149			$	14,812

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, 2021		$	5,765			$	977			$	21,257
Increases for costs incurred to fulfill performance obligations			—				3,140				—
Increase for balances acquired			—				634				10,048
Increase (decrease) due to customer billings			(11,214	)			—				55,354
Decrease due to cost recognition on completed performance obligations			—				(4,128	)			—
Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations			12,186				—				(55,318	)
Other changes and FX impact			—				(8	)			137
Ending balance as of December 31, 2021		$	6,737			$	615			$	31,478

		Unbilled Accounts Receivable				Deferred Program Costs				Contract Liabilities
Beginning balance as of March 31, 2020		$	5,711			$	1,631			$	26,142
Increases for costs incurred to fulfill performance obligations			—				6,635				—
Increase for balance acquired			101				—				2,700
Increase (decrease) due to customer billings			(8,255	)			—				42,785
Decrease due to cost recognition on completed performance obligations			—				(6,969	)			—
Increase (decrease) due to recognition of revenue based on transfer of control of performance obligations			6,644				—				(48,274	)
Other changes and FX impact			—				33				1,025
Ending balance as of December 31, 2020		$	4,201			$	1,330			$	24,378

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

			Three Months Ended								Nine Months Ended
	Reportable		December 31,								December 31,
	Segment		2021				2020				2021				2020
Inox Wind Limited	Wind		<10%					24	%			<10%				12	%
Fuji Bridex PTE Ltd	Grid		20		%			<10%				10	%			<10%
EPC Services	Grid		<10%					14	%			<10%				17	%

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- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
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