Subordinated Debentures (Details) (USD $)	0 Months Ended	1 Months Ended	12 Months Ended
	Mar. 25, 2004	Aug. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
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		40,000,000
Fixed interest rate (as a percent)		5.75%
Subordinated Debentures
Subordinated Debentures
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)			2.98%	2.99%
Subordinated debentures
Average balance outstanding			30,858,000	10,310,000
Maximum amount outstanding at any month-end during the year			70,310,000	10,310,000
Balance outstanding at end of year			70,310,000	10,310,000
Weighted average interest rate during the year (as a percent)			5.00%	2.98%
Subordinated Debentures | PPBI Trust I
Subordinated Debentures
Debt issued	10,310,000
Minority interest purchased (as a percent)	3.00%
Amount of minority interest purchased	$ 310,000