Name:	tbba_ConsecutivePeriodForDefinedBenefitPensionPlanEmployeeAverageMonthlyPay
Namespace Prefix:	tbba_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The percentage rate of expected long-term rate of return to calculate plan assets.

No definition available.

Name:	tbba_DefinedBenefitPlanPlanAssetsExpectedLongTermRateOfReturn
Namespace Prefix:	tbba_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Represents the number of years of employment.

No definition available.

Name:	tbba_NumberOfYearsOfEmployment
Namespace Prefix:	tbba_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

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

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(1)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Name:	us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(2)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920