Commitments and Contingencies - Total Commitments (Details) - Heritage Oaks Bank - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Commitments and Contingencies
Total commitments and standby letters of credit	$ 277,466	$ 255,093
Outstanding financial fixed rate commitments	26,800
Outstanding financial variable rate commitments	250,700
Commitments to extend credit
Commitments and Contingencies
Total commitments and standby letters of credit	265,074	242,125
Standby letters of credit
Commitments and Contingencies
Total commitments and standby letters of credit	12,392	12,968
Standby letters of credit | One customer
Commitments and Contingencies
Total commitments and standby letters of credit	$ 10,200	$ 10,400