XML 18 R43.htm IDEA: XBRL DOCUMENT v3.19.3

Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues	$ 14,012	$ 14,876	$ 27,782	$ 27,483
Grid [Member]
Revenues	11,489	7,569	21,345	16,498
Grid [Member] | Americas [Member]
Revenues	10,698	5,052	18,499	12,548
Grid [Member] | Asia Pacific [Member]
Revenues	393	2,308	2,220	3,115
Grid [Member] | EMEA [Member]
Revenues	398	209	626	835
Wind [Member]
Revenues	2,523	7,307	6,437	10,985
Wind [Member] | Americas [Member]
Revenues	1	24	47	47
Wind [Member] | Asia Pacific [Member]
Revenues	2,464	7,278	6,320	10,873
Wind [Member] | EMEA [Member]
Revenues	58	5	70	65
Equipment and Systems [Member] | Grid [Member]
Revenues	10,044	5,503	18,399	12,957
Equipment and Systems [Member] | Wind [Member]
Revenues	2,077	7,219	5,581	10,711
Services and Technology Development [Member] | Grid [Member]
Revenues	1,445	2,066	2,946	3,541
Services and Technology Development [Member] | Wind [Member]
Revenues	$ 446	$ 88	$ 856	$ 274

X

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=amsc_GridMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=srt_AmericasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=srt_AsiaPacificMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_StatementGeographicalAxis=us-gaap_EMEAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=amsc_WindMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=amsc_EquipmentAndSystemsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=amsc_ServicesAndTechnologyDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: