Subsequent Events (Details) - Grandpoint Capital, Inc. $ in Billions	Feb. 09, 2018 USD ($) bank
Subsequent Event [Line Items]
Total assets acquired	$ 3.2
Loans, gross	2.4
Deposits	$ 2.4
Number of regional offices \| bank	14
Equity issued, ratio	0.4750

Business Acquisition, Equity Interests Issued or Issuable Number of Shares Issued Ratio

No definition available.

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- Definition

The amount of acquisition cost of a business combination allocated to deposits assumed from the acquired entity.

+ References

No definition available.

+ Details

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Namespace Prefix:	ppbi_
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Period Type:	instant

- Definition

The amount of acquisition cost of a business combination allocated to loans.

+ References

No definition available.

+ Details

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Namespace Prefix:	ppbi_
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Balance Type:	debit
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- Definition

Represents the number of branches.

+ References

No definition available.

+ Details

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- Definition

Amount of assets acquired at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

+ Details

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- 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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