The amount of cash paid for amendment fee during the period.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of temporary over advance on the credit facility during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	bdr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

It represent advance rate of revolving credit.

+ References

No definition available.

+ Details

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Namespace Prefix:	bdr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

+ References

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
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Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ 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(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Amount of increase (decrease), classified as other, of the credit facility.

+ References

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.(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

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

- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Amount of the required periodic payment applied to principal.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

Name:	bdr_AmendmentAxis=bdr_EleventhAmendmentMember
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Data Type:	na
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- Details

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Period Type:

- Details

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Debt (Details Textual) - USD ($)						1 Months Ended				6 Months Ended
Debt (Details Textual) - USD ($)	Nov. 14, 2015	Oct. 14, 2015	Aug. 12, 2015	May 14, 2015	Aug. 06, 2008	Jun. 01, 2016	Mar. 01, 2016	Mar. 30, 2015	Jan. 21, 2015	Jun. 30, 2016	Feb. 01, 2016	Dec. 31, 2015	Apr. 24, 2015
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate Description										Prime plus 1.75%
Long-Term Line Of Credit										$ 2,228,000		$ 2,664,000
Eighth Amendment [Member]
Debt Instrument [Line Items]
Amendment Fee				$ 15,000
Revolving Credit Advances Rate				25.00%
Tenth Amendment [Member]
Debt Instrument [Line Items]
Amendment Fee		$ 5,000
Revolving Credit Advances Rate		25.00%
Eleventh Amendment [Member]
Debt Instrument [Line Items]
Amendment Fee	$ 50,000
Revolving Credit Advances Rate	25.00%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity										250,000
Line of Credit Facility, Periodic Payment, Principal										18,000
Long-Term Line Of Credit										2,228,000
Revolving Credit Facility [Member] \| Thirteenth Amendment [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity							$ 4,000,000				$ 5,000,000
Revolving Credit Facility [Member] \| Fourteenth Amendment [Member]
Debt Instrument [Line Items]
Debt Instrument, Covenant Compliance							In addition, the Fourteenth Amendment amended certain of the Companys financial covenants. In particular, the amended covenants relaxed the previous balance sheet leverage ratio compliance threshold of 1.25:1.00, and required that the Company maintain a balance sheet leverage ratio of not more than (i) 1.85 to 1.00 as of December 31, 2015 and (ii) 2.00 to 1.00 as of March 31, 2016. In addition, the amended covenants relaxed the previous EBITDA compliance threshold and required that the Company achieve EBITDA thresholds of not less than (i) negative (-) $3,897 as of December 31, 2015 (calculated on a trailing twelve month basis) and (ii) $50 as of March 31, 2016 (calculated on a trailing three month basis).
Revolving Credit Facility [Member] \| Fifteenth Amendment [Member]
Debt Instrument [Line Items]
Debt Instrument, Covenant Compliance						In addition, the Fifteenth Amendment amended certain of the Companys financial covenants. In particular, the amended covenants extended the previous balance sheet leverage ratio compliance threshold of not more than 2.00 to 1.00, and required that the Company to achieve EBITDA of not less than negative (-) $82 as of June 30, 2016 (calculated on a trailing six month basis).
Revolving Credit Facility [Member] \| Maximum [Member] \| Eighth Amendment [Member]
Debt Instrument [Line Items]
Revolving Credit Advances Rate				35.00%
Revolving Credit Facility [Member] \| Maximum [Member] \| Tenth Amendment [Member]
Debt Instrument [Line Items]
Revolving Credit Advances Rate		35.00%
Revolving Credit Facility [Member] \| Maximum [Member] \| Eleventh Amendment [Member]
Debt Instrument [Line Items]
Revolving Credit Advances Rate	35.00%
Revolving Credit Facility [Member] \| Minimum [Member] \| Eighth Amendment [Member]
Debt Instrument [Line Items]
Revolving Credit Advances Rate				25.00%
Revolving Credit Facility [Member] \| Minimum [Member] \| Tenth Amendment [Member]
Debt Instrument [Line Items]
Revolving Credit Advances Rate		25.00%
Revolving Credit Facility [Member] \| Minimum [Member] \| Eleventh Amendment [Member]
Debt Instrument [Line Items]
Revolving Credit Advances Rate	25.00%
Term Loan Credit Facility [Member]
Debt Instrument [Line Items]
Long-Term Line Of Credit										$ 3,482,000
Amendment Fee									$ 15,000
Term Loan Credit Facility [Member] \| Seventh Amendment [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Periodic Payment, Principal									$ 18,000
Debt Instrument, Maturity Date									Feb. 01, 2016
Line of Credit Facility, Interest Rate During Period									0.25%
Term Loan Credit Facility [Member] \| Thirteenth Amendment [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity							$ 8,350,000				$ 9,350,000
Santander Bank [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate Description										1.50
Santander Bank [Member] \| Ninth Amendment [Member]
Debt Instrument [Line Items]
Amendment Fee			$ 20,000
Santander Bank [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Increase (Decrease), Other, Net					$ 8,000,000
Long-Term Line Of Credit					4,000,000
Line of Credit Facility, Interest Rate During Period										3.50%
Line Of Credit Temporary Over Advance Facility								$ 500,000
Debt Instrument, Fee Amount													$ 2,500
Santander Bank [Member] \| Revolving Credit Facility [Member] \| Seventh Amendment [Member]
Debt Instrument [Line Items]
Long-Term Line Of Credit					7,482,000
Santander Bank [Member] \| Revolving Credit Facility [Member] \| Fourteenth Amendment [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity							$ 500,000
Santander Bank [Member] \| Term Loan Credit Facility [Member]
Debt Instrument [Line Items]
Long-Term Line Of Credit					$ 3,482,000