Parent Company Financial Information - Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets
Total assets	$ 2,024,890	$ 1,899,739
Liabilities
Junior subordinated debentures	10,612	10,438
Other liabilities	10,033	14,385
Total liabilities	1,812,040	1,693,305
Shareholders' Equity
Common stock	164,708	165,517
Additional paid in capital	9,310	8,251
Retained earnings	40,916	32,200
Accumulated other comprehensive (loss) income	(2,084)	466
Total shareholders' equity	212,850	206,434	$ 197,940	$ 126,427
Total liabilities and shareholders' equity	2,024,890	1,899,739
Heritage Oaks Bancorp
Assets
Cash	7,475	6,034
Prepaid and other assets	1,294	2,077
Investment in subsidiary	214,876	208,916
Total assets	223,645	217,027
Liabilities
Junior subordinated debentures	10,612	10,438
Other liabilities	183	155
Total liabilities	10,795	10,593
Shareholders' Equity
Common stock	164,708	165,517
Additional paid in capital	9,310	8,251
Retained earnings	40,916	32,200
Accumulated other comprehensive (loss) income	(2,084)	466
Total shareholders' equity	212,850	206,434
Total liabilities and shareholders' equity	$ 223,645	$ 217,027