CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net Income	$ 16,616	$ 8,993	$ 15,776
Adjustments to net income:
Depreciation and amortization expense	2,198	1,948	1,358
Provision for loan losses	4,684us-gaap_ProvisionForLoanAndLeaseLosses	1,860us-gaap_ProvisionForLoanAndLeaseLosses	751us-gaap_ProvisionForLoanAndLeaseLosses
Share-based compensation expense	514us-gaap_ShareBasedCompensation	943us-gaap_ShareBasedCompensation	177us-gaap_ShareBasedCompensation
Loss on sale of other real estate owned	17	226	783
Write down of other real estate owned		354ppbi_WriteDownOfOtherRealEstateOwned	556ppbi_WriteDownOfOtherRealEstateOwned
Loss (gain) on sale and disposal of premises and equipment	23	13	(597)
Amortization of premium/(discounts) on securities held for sale, net	2,641	3,052	787
Amortization of loan mark-to-market discount	(2,020)	(3,231)	(1,794)
Gain on sale of investment securities available for sale	(1,547)us-gaap_GainLossOnSaleOfSecuritiesNet	(1,544)us-gaap_GainLossOnSaleOfSecuritiesNet	(1,953)us-gaap_GainLossOnSaleOfSecuritiesNet
Other-than-temporary impairment loss (recovery) on investment securities, net	(29)	4	159
Recoveries on loans	99	377	236
Proceeds from the sales of and principal payments from loans held for sale	31	534	8,582
Gain (loss) on sale of loans held for sale	180ppbi_GainLossOnSaleOfLoansHeldForSale		(164)ppbi_GainLossOnSaleOfLoansHeldForSale
Purchase and origination of loans held for sale			(12,099)
Gain on sale of loans held for investment	(6,300)	(3,228)	(464)
Gain on FDIC transaction			(5,340)us-gaap_GainLossOnSaleOfInvestments
Deferred income tax provision (benefit)	(2,375)us-gaap_DeferredIncomeTaxExpenseBenefit	(3,750)us-gaap_DeferredIncomeTaxExpenseBenefit	1,560us-gaap_DeferredIncomeTaxExpenseBenefit
Change in accrued expenses and other liabilities, net	2,764	9,683	2,033
Income from bank owned life insurance, net	(771)us-gaap_BankOwnedLifeInsuranceIncome	(659)us-gaap_BankOwnedLifeInsuranceIncome	(508)us-gaap_BankOwnedLifeInsuranceIncome
Change in accrued interest receivable and other assets, net	(3,438)	(71)	2,330
Net cash provided by operating activities	13,287	15,504	12,169
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from sale and principal payments on loans held for investment	357,145	220,275	204,843
Net change in undisbursed loan funds	64,655	260,683	47,805
Purchase and origination of loans held for investment	(721,299)	(665,339)	(427,823)
Proceeds from sale of other real estate owned	777	1,488	12,318
Principal payments on securities available for sale	26,815	33,688	16,039
Purchase of securities available for sale	(133,689)	(101,268)	(96,438)
Proceeds from sale or maturity of securities available for sale	166,341	234,067	114,376
Investment in bank owned life insurance	(2,000)
Purchases of premises and equipment	(1,448)	(3,581)	(4,525)
Purchase of Federal Reserve Bank stock	(536)	(5,948)
Redemption of Federal Home Loan Bank of San Francisco stock	(1,081)	2,398	2,553
Cash acquired (disbursed) in acquisitions	(7,793)	138,424	39,491
Net cash (used in) provided by investing activities	(252,113)	114,887	(91,361)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase (decrease) in deposit accounts	324,540us-gaap_IncreaseDecreaseInDeposits	(139,207)us-gaap_IncreaseDecreaseInDeposits	(39,691)us-gaap_IncreaseDecreaseInDeposits
Proceeds from issuance of subordinated debt	58,834
Repayment of FHLB advances and other borrowings	(155,065)
Proceeds from FHLB advances and other borrowings		71,686	87,000
Proceeds from issuance of common stock, net of issuance cost		4,560	30,958
Proceeds from exercise of stock options	267us-gaap_ProceedsFromWarrantExercises	90us-gaap_ProceedsFromWarrantExercises	237us-gaap_ProceedsFromWarrantExercises
Repurchase of common stock	(5,638)	(59)	(195)
Net cash provided (used in) financing activities	222,938	(62,930)	78,309
Net increase (decrease) in cash and cash equivalents	(15,888)	67,461	(883)
Cash and cash equivalents, beginning of year	126,813	59,352	60,235
Cash and cash equivalents, end of year	110,925	126,813	59,352
SUPPLEMENTAL CASH FLOW DISCLOSURES
Interest paid	6,500us-gaap_InterestPaid	5,352us-gaap_InterestPaid	7,162us-gaap_InterestPaid
Income taxes paid	14,700us-gaap_IncomeTaxesPaid	9,425us-gaap_IncomeTaxesPaid	8,975us-gaap_IncomeTaxesPaid
Assets acquired (liabilities assumed) in acquisitions (See Note 20):
Investment securities		347,196	101
FRB / FHLB / TIB Stock		1,765	1,390
FDIC receivable			167
Loans	78,833	68,815	63,773
Core deposit intangible		4,766	840
Other real estate owned		752	11,533
Goodwill	5,522	17,428
Fixed assets	74	1,446
Other assets	702	12,468	3,656
Deposits		(540,725)	(115,582)
Other borrowings	(67,617)	(16,905)
Other liabilities	(709)	(7,199)	(29)
Additional paid-in capital	(9,012)	(29,364)
NONCASH INVESTING ACTIVITIES DURING THE PERIOD
Transfers from loans to other real estate owned	645	996	3,151
Loans held for sale transfer to loans held for investment	$ 2,936

The cash inflow associated with the FDIC transaction during the period.

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The sum of cash and cash equivalents plus Federal Funds Sold. Cash and cash equivalents consist of short term, highly liquid investments that are readily convertible to known amounts of cash and are so near their maturity that they present negligible risk of changes in value due to changes in interest rates -- usually with an original maturity less than 90 days. Also includes intangible assets.

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This element represents the Federal Reserve Banks, Federal Home Loan Banks stock and The Independent Bankers Bank stock during the reporting period.

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The net gain (loss) resulting from a sale of loans held for investment, including fair value adjustments to loans held for investment purposes.

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market.

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The net gain or loss resulting from sales and other disposals of other real estate owned excluding the write-down of other real estate owned after acquisition or physical possession.

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The amount of FDIC receivable that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The amount of goodwill that an entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. Part noncash refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The fair value of shares issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. Part noncash refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The amount of other borrowings that an entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. Part noncash refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The amount of other real estate owned that an Entity acquires in a noncash (or part noncash) acquisition. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Represents the amount of cash outflow for payments for investment made in bank owned life insurance.

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The cash inflow from a borrowing made from Federal Home Loan Bank. Also includes the proceeds from other borrowings not otherwise specified in the taxonomy.

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This element represents the cash outflow for the payment of loans drawn from the Federal Home Loan Bank. Also includes the repayment of other borrowings not otherwise specified in the taxonomy.

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This element represents the write-down of other real estate owned after acquisition or physical possession.

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The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.

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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities.

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Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

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The net gain (loss) realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.

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The net cash inflow or outflow for the increase (decrease) in the beginning and end of period deposits balances.

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The increase (decrease) during the reporting period in undistributed cash for loans that have been granted but not entirely funded.

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The amount of cash paid for interest during the period.

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Amount of accretion (amortization) of purchase discount (premium) on nonoperating securities.

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The increase (decrease) in cash associated with the entity's continuing operating, investing, and financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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No definition available.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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The amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

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Amount of cash outflow (inflow) from acquisition (sale) of Federal Home Loan Bank (FHLBank) stock.

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The cash outflow to reacquire common stock during the period.

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The cash outflow to acquire debt and equity securities not classified as either held-to-maturity securities or trading securities which would be classified as available-for-sale securities and reported at fair value, with unrealized gains and losses excluded from earnings and reported in a separate component of shareholders' equity.

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Amount of cash outflow to acquire Federal Reserve Bank (FRB) stock.

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The cash outflow from (a) purchases of loans held-for-investment, (b) purchases of leases held-for-investment, and (c) both.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The aggregate cash outflow used to purchase all loans that are held with the intention to resell in the near future.

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The cash inflow from the additional capital contribution to the entity.

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The cash inflow from a borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in liquidation of the entity's assets or underlying collateral.

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The cash inflow from repayments of the balance excluding interest (principal) on loans receivable and leases held for investment purposes.

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The cash inflow from sale proceeds and collection of repayments from borrowers on loans classified as held-for-sale, including proceeds from loans sold through mortgage securitization; includes mortgages and other types of loans.

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The cash inflow associated with the sale or maturity (principal being due) of securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.

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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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The cash inflow from the sale assets received in full or partial satisfaction of a receivable including real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. Foreclosed assets also include loans that are treated as if the underlying collateral had been foreclosed because the institution has taken possession of the collateral, even though legal foreclosure or repossession proceedings have not taken place.

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The cash inflow associated with the amount received from holders exercising their stock warrants.

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Amount of expense related to estimated loss from loan and lease transactions.

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Value of loans held-for-sale transferred to loans held in the entity's portfolio in noncash transactions.

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