No definition available.

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

- Definition

Financing receivables that are current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953401-111524

+ Details

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

- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5111-111524

+ Details

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

- Definition

Recorded Investment in financing receivables that are past due at the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953401-111524

+ Details

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

- Definition

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18794-111554

+ Details

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

- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524

+ Details

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

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rbpaa_MultiFamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialMortgageMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_FinanceLeasesPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=rbpaa_TaxCertificatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Loans and Leases - Aging Analysis of Past Due Payments for Each Loan Portfolio Segment (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Non-accrual	$ 4,455,000		$ 4,455,000		$ 5,492,000
Current	570,135,000		570,135,000		490,265,000
Total	575,818,000	$ 471,216,000	575,818,000	$ 471,216,000	499,103,000
Interest income lost on non-accrual loans	135,000	142,000		539,000
Financing Receivables, 30 to 59 Days Past Due [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Financing Receivable, Recorded Investment, Past Due	682,000		682,000		2,556,000
Financing Receivables, 60 to 89 Days Past Due [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Financing Receivable, Recorded Investment, Past Due	546,000		546,000		790,000
Commercial real estate [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Non-accrual	832,000		832,000		1,495,000
Current	252,242,000		252,242,000		224,088,000
Total	253,074,000	210,883,000	253,074,000	210,883,000	225,679,000
Commercial real estate [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Financing Receivable, Recorded Investment, Past Due					96,000
Construction and land development [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Non-accrual	144,000		144,000		145,000
Current	74,741,000		74,741,000		47,332,000
Total	74,885,000	38,864,000	74,885,000	38,864,000	47,984,000
Construction and land development [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Financing Receivable, Recorded Investment, Past Due					507,000
Commercial and industrial [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Non-accrual	674,000		674,000		751,000
Current	105,226,000		105,226,000		83,727,000
Total	106,254,000	82,414,000	106,254,000	82,414,000	85,980,000
Commercial and industrial [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Financing Receivable, Recorded Investment, Past Due	346,000		346,000		910,000
Commercial and industrial [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Financing Receivable, Recorded Investment, Past Due	8,000		8,000		592,000
Multi-family [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Current	23,831,000		23,831,000		16,249,000
Total	23,831,000	15,222,000	23,831,000	15,222,000	16,249,000
Residential real estate [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Non-accrual	584,000		584,000		889,000
Current	48,231,000		48,231,000		49,816,000
Total	49,061,000	54,025,000	49,061,000	54,025,000	51,588,000
Residential real estate [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Financing Receivable, Recorded Investment, Past Due	139,000		139,000		724,000
Residential real estate [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Financing Receivable, Recorded Investment, Past Due	107,000		107,000		159,000
Leases [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Non-accrual	1,476,000		1,476,000		1,087,000
Current	60,567,000		60,567,000		62,896,000
Total	62,671,000	61,954,000	62,671,000	61,954,000	64,341,000
Leases [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Financing Receivable, Recorded Investment, Past Due	197,000		197,000		319,000
Leases [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Financing Receivable, Recorded Investment, Past Due	431,000		431,000		39,000
Tax certificates [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Non-accrual	745,000		745,000		1,125,000
Current	3,058,000		3,058,000		3,630,000
Total	3,803,000	5,294,000	3,803,000	5,294,000	4,755,000
Consumer [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Current	2,239,000		2,239,000		2,527,000
Total	$ 2,239,000	$ 2,560,000	2,239,000	$ 2,560,000	$ 2,527,000
Royal Bancshares [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Interest income lost on non-accrual loans			$ 450,000