Name:	bwen_ClassOfWarrantOrRightBeneficialOwnershipPercentage
Namespace Prefix:	bwen_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the current beneficial ownership percentage that will not trigger the preferred share purchase rights unless they acquire additional shares under the rights plan.

No definition available.

Name:	bwen_ClassOfWarrantOrRightCurrentBeneficialOwnershipPercentageThatWillNotTriggerPreferredSharePurchaseRights
Namespace Prefix:	bwen_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the number of rights for each outstanding share of common stock.

No definition available.

Name:	bwen_ClassOfWarrantOrRightNumberOfRightsPerCommonStockShare
Namespace Prefix:	bwen_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Represents the length of time that the tax assets associated with IRC Section 382 NOL carryforwards are to be preserved.

No definition available.

Name:	bwen_TaxAssetsPreservationPeriod
Namespace Prefix:	bwen_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Subsequent to the adoption of a shareholders rights plan, this value represents the threshold percentage of beneficial ownership of common stock acquired by any person or group without approval of the board of directors, or additional shares acquired by any shareholder already holding such percentage of common stock, upon which a preferred share purchase rights offering would occur, which would significantly dilute the ownership of the acquirer.

No definition available.

Name:	bwen_ThresholdPercentageOfBeneficialOwnershipForSignificantDilutionInOwnershipInterest
Namespace Prefix:	bwen_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_ClassOfWarrantOrRightLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

No definition available.

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Amount of unrecognized tax benefits.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319

Name:	us-gaap_UnrecognizedTaxBenefits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319