Description of Business and Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014 item	Dec. 31, 2013 item
Description of Business and Summary of Significant Accounting Policies
Percentage of capital stock of the Bank held	100.00%
Number of depository branches	13ppbi_NumberOfDepositoryBranches
Cash and Cash Equivalents
Cash reserves required by the Board of Governors of the Federal Reserve for depository institutions (in dollars)	$ 47.3
Securities
Number of investment securities classified as held to maturity	0	0
Number of investment securities classified as held for trading	0	0
Income Taxes
Valuation allowance deferred tax asset	$ 0
Buildings
Premises, furniture and equipment
Estimated useful life	40 years
Furniture, fixtures and equipment
Premises, furniture and equipment
Estimated useful life	7 years
Computer and telecommunication
Premises, furniture and equipment
Estimated useful life	3 years

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Represents the number of depository branches.

+ References

No definition available.

+ Details

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- Definition

Represents the number of investment securities classified as held for trading.

+ References

No definition available.

+ Details

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- Definition

Represents the number of investment securities classified as held to maturity.

+ References

No definition available.

+ Details

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- Details

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- Definition

Cash deposited in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 305

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6478312&loc=d3e61473-112792

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- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

+ References

No definition available.

+ Details

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