Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income	$ 10,891	$ 7,337
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses		500
Provision for depreciation and amortization	1,361	1,555
Amortization of core deposit intangible	166	166
Amortization of debt issuance costs	35	34
Compensation expense associated with stock options	8	18
Compensation expense associated with restricted stock	214	124
Tax benefits from vesting of restricted stock	(43)	(47)
Net gain on sale or call of securities	(41)	(139)
Amortization of investment premiums and accretion of discounts, net	1,448	1,502
Amortization of held-to-maturity fair value adjustments		(52)
(Gain) loss on disposal of fixed assets	(5)	1
Write-down of other real estate owned		52
Increase in cash surrender value of life insurance	(384)	(413)
Life insurance death benefit		(502)
Increase in deferred compensation and salary continuation plans		38
Increase in deferred loan fees and costs	(47)	(446)
Decrease in other assets	658	865
Increase (decrease) in other liabilities	937	(330)
Net cash provided by operating activities	15,198	10,263
Cash flows from investing activities:
Proceeds from maturities and payments of available-for-sale securities	23,932	16,560
Proceeds from sale of available-for-sale securities	27,567	47,892
Purchases of available-for-sale securities	(31,293)	(121,616)
Proceeds from maturities and payments of held-to-maturity securities		679
Investment in qualified affordable housing partnerships	(32)	(18)
Net purchase of Federal Home Loan Bank of San Francisco stock	(1,355)	(72)
Loan originations, net of principal repayments	(54,014)	(27,189)
Net repayment on loan pools	6,696	5,228
Purchase of premises and equipment	(281)	(369)
Proceeds from the sale of other real estate owned	48	1,067
Proceeds from life insurance policy		2,249
Net cash used in investing activities	(28,732)	(75,589)
Cash flows from financing activities:
Net increase in demand deposits and savings accounts	69,980	72,966
Net decrease in certificates of deposit	(27,951)	(14,847)
Advances on term debt	230,160	30,259
Repayment of term debt	(232,860)	(31,476)
Proceeds from stock options exercised	197	245
Net proceeds from issuance of common stock		26,778
Cash paid when directly withholding shares for tax-withholding purposes	(103)	(85)
Cash dividends paid on common stock	(1,623)	(1,290)
Net cash provided by financing activities	37,800	82,550
Net increase in cash and cash equivalents	24,266	17,224
Cash and cash equivalents at beginning of year	66,970	68,407
Cash and cash equivalents at end of period	91,236	85,631
Supplemental disclosures of cash flow activity:
Income taxes	2,725	2,521
Interest	3,735	3,233
Supplemental disclosures of non cash investing activities:
Transfer of loans to other real estate owned	140	946
Unrealized (loss) gain on investment securities available-for-sale	(5,338)	1,975
Changes in net deferred tax asset related to changes in unrealized loss (gain) on investment securities available-for-sale	1,577	(814)
Changes in accumulated other comprehensive income due to changes in unrealized (loss) gain on investment securities available-for-sale	(3,761)	1,161
Accretion of held-to-maturity investment securities from other comprehensive income to interest income		(52)
Changes in deferred tax related to accretion of held-to-maturity investment securities		21
Changes in accumulated other comprehensive income due to accretion of held-to-maturity investment securities		(31)
Reclassification of accumulated other comprehensive income due to tax rate change	52
Supplemental disclosures of non cash financing activities:
Stock issued under employee plans	45	41
Cash dividend declared on common shares and payable after period-end	$ 650	$ 486