Government Grants (Narrative) (Details) (USD $)	9 Months Ended
Dec. 31, 2013
Government Grants [Abstract]
Government grant, approved funding	$ 32,400,000
Percentage of eligible costs reimbursed by government grants	50.00%
Threshold for government reimbursement, asset fair value	5,000
Grant reimbursements received	24,000,000
Grant funds receivable	200,000
Change in Estimate of Reimbursable Rates	$ 958,000

Total reimbursements received under ARRA grant.

No definition available.

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- Definition

Increase or Decrease in reimbursement of costs recorded due to change in estimate of reimbursable rates under the Grant

+ References

No definition available.

+ Details

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- Definition

Total funds approved for reimbursement under ARRA grant.

+ References

No definition available.

+ Details

Name:	uqm_GovernmentGrantApprovedFunding
Namespace Prefix:	uqm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	uqm_GovernmentGrantsAbstract
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- Definition

The minimum fair value of an asset that requires government reimbursement of 50% of gain upon the sale of the asset.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Pursuant to the terms of a government grant, the reimbursable percentage of qualifying costs.

+ References

No definition available.

+ Details

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- Definition

Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.8)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 8

-Article 5

+ Details

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