This line item represents the cash payment for liens specified as percentage of redemption amount.

No definition available.

Name:	rbpaa_CashPaymentForLiensSpecifiedAsPercentageOfRedemptionAmount
Namespace Prefix:	rbpaa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

This line item represents the interest rate on tax liens acquired during the period.

+ References

No definition available.

+ Details

Name:	rbpaa_InterestRateOnTaxLiensAcquired
Namespace Prefix:	rbpaa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The portion of the loss contingency recorded in the period that is attributable to the Parent.

+ References

No definition available.

+ Details

Name:	rbpaa_LossContingencyLossInPeriodAttributableToParent
Namespace Prefix:	rbpaa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This line item represents the payment period from date of written notice.

+ References

No definition available.

+ Details

Name:	rbpaa_PaymentPeriodFromDateOfWrittenNotice
Namespace Prefix:	rbpaa_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

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

- Details

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

- Definition

The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

+ Details

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

- Details

Name:	us-gaap_LitigationCaseAxis=rbpaa_ConsolidatedMasterClassActionComplaintMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=rbpaa_CrusaderServicingCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=rbpaa_RoyalTaxLienServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

LEGAL CONTINGENCIES (Details) (USD $)	12 Months Ended
LEGAL CONTINGENCIES (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 30, 2013
Loss Contingencies [Line Items]
Loss contingency	$ (55,000)us-gaap_LossContingencyLossInPeriod	$ 1,750,000us-gaap_LossContingencyLossInPeriod
The "Complaint"
Loss Contingencies [Line Items]
Loss contingency		1,650,000
Department of Justice fine in period attributable to parent		$ 990,000
Cash payment for liens specified as percentage of redemption amount (in hundredths)		85.00%
Payment period from date of written notice		35 days
Interest rate on tax liens acquired		0.00%
Crusader Servicing Corporation \| Royal Bank
Loss Contingencies [Line Items]
Ownership interest (as a percent)	80.00%		60.00%
Royal Tax Lien Services [Member] \| Royal Bank
Loss Contingencies [Line Items]
Ownership interest (as a percent)			60.00%