Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Interest income:
Interest and fees on loans	$ 9,758	$ 8,796	$ 19,142	$ 17,247
Interest on taxable securities	872	808	1,661	1,592
Interest on tax-exempt securities	534	588	1,064	1,182
Interest on interest-bearing deposits in other banks	156	65	270	140
Total interest income	11,320	10,257	22,137	20,161
Interest expense:
Interest on demand deposits	184	130	332	252
Interest on savings deposits	47	41	94	86
Interest on certificates of deposit	545	515	1,074	1,112
Interest on term debt	298	295	591	1,077
Interest on junior subordinated debentures	71	59	137	113
Total interest expense	1,145	1,040	2,228	2,640
Net interest income	10,175	9,217	19,909	17,521
Provision for loan and lease losses	300		500
Net interest income after provision for loan and lease losses	9,875	9,217	19,409	17,521
Noninterest income:
Service charges on deposit accounts	142	88	269	160
ATM and point of sale fees	288	335	554	427
Fees on payroll and benefit processing	147	139	338	299
Life insurance	135	153	781	309
Gain on sale of investment securities, net	35	28	101	122
Impairment losses on investment securities		(546)	0	(546)
Federal Home Loan Bank of San Francisco dividends	54	99	157	189
Other income	182	141	325	426
Total noninterest income	983	437	2,525	1,386
Noninterest expense:
Salaries and related benefits	4,147	4,086	9,005	8,315
Premises and equipment	1,054	987	2,102	1,776
Federal Deposit Insurance Corporation insurance premium	104	181	152	337
Data processing fees	450	373	857	678
Professional service fees	501	470	894	906
Telecommunications	223	199	434	346
Branch acquisition costs		168		580
Loss on cancellation of interest rate swap				2,325
Other expenses	1,235	1,204	2,331	2,406
Total noninterest expense	7,714	7,668	15,775	17,669
Income before provision for income taxes	3,144	1,986	6,159	1,238
Provision for income taxes	935	430	1,698	642
Net income	$ 2,209	$ 1,556	$ 4,461	$ 596
Earnings per share - basic (in dollars per share)	$ 0.15	$ 0.11	$ 0.31	$ 0.04
Weighted average shares - basic (in shares)	15,014	13,367	14,220	13,364
Earnings per share - diluted (in dollars per share)	$ 0.15	$ 0.11	$ 0.31	$ 0.04
Weighted average shares - diluted (in shares)	15,113	13,425	14,321	13,408