Name:	btn_LineOfCreditCovenantMaximumTotalLiabilitiesToTangibleNetWorth
Namespace Prefix:	btn_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

This item represents the minimum required working capital beginning December 31, 2014 the Company will need to be in compliance with the line of credit facility covenants.

No definition available.

Name:	btn_LineOfCreditCovenantWorkingCapitalRequirement
Namespace Prefix:	btn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The amount by which the line of credit facility borrowing capacity may be increased subject to lender approval.

No definition available.

Name:	btn_LineOfCreditFacilityAdditionalBorrowingCapacity
Namespace Prefix:	btn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Minimum net income before taxes, calculated on a rolling 4 quarter basis, requirement set forth in Line of Credit Facility financial covenants.

No definition available.

Name:	btn_LineOfCreditFacilityRestrictionIncomeBeforeTaxes
Namespace Prefix:	btn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	btn_Note9DebtDetailsLineItems
Namespace Prefix:	btn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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.

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 210.5-02.19(b),22(b))

-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 19, 22

-Article 5

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

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).