Annual report pursuant to Section 13 and 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Summary of Significant Accounting Policies - Revenue by Product (Details)

v3.8.0.1

Summary of Significant Accounting Policies - Revenue by Product (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue by product
Total from Microturbine Products	$ 50,813	$ 48,293
Accessories and Parts	15,941	15,032
Total Product, Accessories and Parts	66,754	63,325
Service	16,083	13,844
Total revenue	82,837	77,169
C30
Revenue by product
Total from Microturbine Products	1,694	2,608
C65
Revenue by product
Total from Microturbine Products	12,740	11,985
C200
Revenue by product
Total from Microturbine Products	2,832	1,878
C600
Revenue by product
Total from Microturbine Products	9,057	5,058
C800
Revenue by product
Total from Microturbine Products	6,461	4,615
C1000
Revenue by product
Total from Microturbine Products	17,886	21,537
Waste heat recovery generator
Revenue by product
Total from Microturbine Products		100
Unit upgrades
Revenue by product
Total from Microturbine Products	$ 143	$ 512

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+ References

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- Definition

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+ References

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(d))
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