Commercial Loan Service Second Loan Program, Number of Loans

No definition available.

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- Definition

Loan-to-ratio Value, Percent

+ References

No definition available.

+ Details

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Namespace Prefix:	bpfh_
Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Loans and Leases Receivable, Funding Expected

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Loans and Leases Receivable, Loans Approved

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Mortgage Deferment Program, Loans Deferred, Amount

+ References

No definition available.

+ Details

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

- Definition

Mortgage Deferment Program, Number of Loans

+ References

No definition available.

+ Details

Name:	bpfh_MortgageDefermentProgramNumberOfLoans
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Balance Type:	na
Period Type:	duration

- Definition

Number of Loans Approved

+ References

No definition available.

+ Details

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- Definition

Percentage of Commercial Loan Portfolio Qualified for the Program, Percent

+ References

No definition available.

+ Details

Name:	bpfh_PercentageOfCommercialLoanPortfolioQualifiedForTheProgramPercent
Namespace Prefix:	bpfh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of Principal and Interest Payments Covered under the Program

+ References

No definition available.

+ Details

Name:	bpfh_PeriodOfPrincipalAndInterestPaymentsCoveredUnderTheProgram
Namespace Prefix:	bpfh_
Data Type:	xbrli:durationItemType
Balance Type:	na
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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524

+ Details

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

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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Subsequent Event (Details) $ in Thousands	3 Months Ended	4 Months Ended
Subsequent Event (Details) $ in Thousands	Mar. 31, 2020 USD ($) loan	May 08, 2020 USD ($) loan	May 08, 2020 USD ($) loan	May 08, 2020 USD ($) loan security	Dec. 31, 2019 USD ($)
Subsequent Event [Line Items]
Amount of loans approved	$ 7,043,338				$ 6,976,704
Commercial Loan Service Second Loan Program
Subsequent Event [Line Items]
Period of principal and interest payments covered under the program	1 year
Maximum loan-to-ratio value to qualify for the program (percent)	75.00%
Percentage of Commercial real estate portfolio qualified for the plan	70.00%
COVID-19 Pandemic Loan Modification Program
Subsequent Event [Line Items]
Mortgage Deferment Program, number of loans \| loan	10
Mortgage Deferment Program, loans deferred	$ 5,000
Subsequent Event
Subsequent Event [Line Items]
Commercial Loan Service Second Loan Program, number of loans approved \| loan		260	260	260
Subsequent Event \| PPP Loans
Subsequent Event [Line Items]
Number of loans approved \| loan			1,100
Loans approved under the program		$ 425,000
Subsequent Event \| Commercial Loan Service Second Loan Program
Subsequent Event [Line Items]
Amount of loans approved		1,400,000	$ 1,400,000	$ 1,400,000
New loans expected to be funded under the program		90,000	$ 90,000	$ 90,000
Subsequent Event \| COVID-19 Pandemic Loan Modification Program
Subsequent Event [Line Items]
Mortgage Deferment Program, number of loans			170	170
Mortgage Deferment Program, loans deferred		$ 90,000