Subordinated Debentures (Details) - USD ($)		1 Months Ended	12 Months Ended
	Mar. 25, 2004	Aug. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
PPBI Trust I
Debt Instrument [Line Items]
Floating Rate Trust Preferred Securities issue amount	$ 10,000,000
Notes
Debt Instrument [Line Items]
Debt issued		$ 60,000,000
Contribution of net proceeds from the Private Placement to the Bank to support general corporate purposes		$ 50,000,000
Fixed interest rate (as a percent)		5.75%
Subordinated Debentures
Debt Instrument [Line Items]
Floating interest rate, base rate			3-month LIBOR
Floating interest rate, basis points added to base rate (as a percent)			2.75%
Effective rate (as a percent)			3.07%	2.98%
Subordinated Debentures | PPBI Trust I
Debt Instrument [Line Items]
Debt issued	$ 10,310,000
Minority interest purchased (as a percent)	3.00%
Amount of minority interest purchased	$ 310,000