Subordinated Debentures (Details) - USD ($)	1 Months Ended		9 Months Ended
	Aug. 31, 2014	Mar. 31, 2004	Sep. 30, 2015
PPBI Trust I
Subordinated Debentures
Floating Rate Trust Preferred Securities issue amount		$ 10,000,000
Notes
Subordinated Debentures
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
Subordinated Debentures
Floating interest rate, base rate			three-month LIBOR
Floating interest rate, basis points added to base rate (as a percent)			2.75%
Effective rate (as a percent)			3.04%
Subordinated Debentures | PPBI Trust I
Subordinated Debentures
Debt issued		$ 10,300,000.0