Commitments and Contingencies - Minimum Payments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Contractual obligations
Contractual obligations, Due Less Than One Year	$ 1,505,991
Contractual obligations, One to Three Years	82,418
Contractual obligations, Three to Five Years	53,456
Contractual obligations, More than Five Years	51,748
Total Obligations	1,693,613	$ 1,519,871
Operating lease obligations
Operating lease obligations, Due 2014	1,418
Operating lease obligations, One to Three Years	1,721
Operating lease obligations, Three to Five Years	1,487
Operating lease obligations, More than 5 Years	2,457
Operating lease obligations, Total	7,083	8,152
Long-term Debt, Fiscal Year Maturity [Abstract]
Total rent expense charged for leases	1,600	1,800	$ 1,600
Deposits
Contractual obligations
Contractual obligations, Due Less Than One Year	1,465,811
Contractual obligations, One to Three Years	64,173
Contractual obligations, Three to Five Years	30,445
Contractual obligations, More than Five Years	4,515
Total Obligations	1,564,944	1,394,764
Salary continuation payments
Contractual obligations
Contractual obligations, Due Less Than One Year	262
Contractual obligations, One to Three Years	524
Contractual obligations, Three to Five Years	524
Contractual obligations, More than Five Years	3,280
Total Obligations	4,590	4,959
FHLB Advances and other
Contractual obligations
Contractual obligations, Due Less Than One Year	38,500
Contractual obligations, One to Three Years	16,000
Contractual obligations, Three to Five Years	21,000
Contractual obligations, More than Five Years	28,000
Total Obligations	103,500	95,500
Junior subordinated debentures
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt obligations, More than Five Years	13,496
Long-term Debt, Total	$ 13,496	$ 16,496
Minimum
Long-term Debt, Fiscal Year Maturity [Abstract]
Optional extension period of operating leases	5 years
Maximum
Long-term Debt, Fiscal Year Maturity [Abstract]
Optional extension period of operating leases	7 years
No Stated Maturity | Deposits
Contractual obligations
Contractual obligations, Due Less Than One Year	$ 1,300
Heritage Oaks Capital Trust II, Mission Community Capital Trust I, and Santa Lucia Bancorp | Heritage Oaks Bancorp | Junior subordinated debentures
Long-term Debt, Fiscal Year Maturity [Abstract]
Debt Instrument, Face Amount	$ 13,500