Pacific Mercantile Bancorp (PMBC) 10-Q 2 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 31, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	PACIFIC MERCANTILE BANCORP
Entity Central Index Key	1,109,546
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Trading Symbol	PMBC
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		21,916,195

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 16,185	$ 12,198
Interest bearing deposits with financial institutions	159,888	186,010
Cash and cash equivalents	176,073	198,208
Interest-bearing time deposits with financial institutions	2,420	2,920
Federal Reserve Bank of San Francisco and Federal Home Loan Bank Stock, at cost	8,823	8,107
Securities available for sale, at fair value	29,919	39,738
Loans (net of allowances of $13,463 and $14,196, respectively)	1,070,751	1,053,201
Other real estate owned	1,275	0
Accrued interest receivable	4,241	3,872
Premises and equipment, net	1,140	1,094
Net deferred tax assets	11,227	0
Other assets	14,129	15,464
Total assets	1,319,998	1,322,604
Deposits:
Noninterest-bearing	336,434	338,273
Interest-bearing	780,661	801,120
Total deposits	1,117,095	1,139,393
Borrowings	40,000	40,866
Accrued interest payable	404	397
Other liabilities	8,651	11,545
Junior subordinated debentures	17,527	17,527
Total liabilities	1,183,677	1,209,728
Commitments and contingencies (Note 10)
Shareholders’ equity:
Series A Non-Voting Preferred Stock, no par value, 1,467,155 shares authorized at September 30, 2018 and 0 shares authorized at December 31, 2017; 1,467,155 shares issued and outstanding at September 30, 2018 and 0 shares issued and outstanding at December 31, 2017	8,480	0
Common stock, no par value, 85,000,000 shares authorized; 21,917,995 and 23,232,515 shares issued and outstanding at September 30, 2018 and December 31, 2017, respectively	143,219	150,689
Accumulated deficit	(13,791)	(36,670)
Accumulated other comprehensive loss	(1,587)	(1,143)
Total shareholders’ equity	136,321	112,876
Total liabilities and shareholders’ equity	$ 1,319,998	$ 1,322,604

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Loans, allowances	$ 13,463	$ 14,196
Preferred stock, shares authorized (in shares)	1,467,155	0
Preferred stock, shares issued (in shares)	1,467,155	0
Preferred stock, shares outstanding (in shares)	1,467,155	0
Common stock, shares authorized (in shares)	85,000,000	85,000,000
Common stock, shares issued (in shares)	21,917,995	23,232,515
Common stock, shares outstanding (in shares)	21,917,995	23,232,515

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest income:
Loans, including fees	$ 13,898	$ 13,386	$ 42,731	$ 35,927
Securities available for sale and stock	265	304	801	930
Interest-bearing deposits with financial institutions	1,055	335	2,615	904
Total interest income	15,218	14,025	46,147	37,761
Interest expense:
Deposits	3,171	1,845	8,731	4,792
Borrowings	358	175	1,095	497
Total interest expense	3,529	2,020	9,826	5,289
Net interest income	11,689	12,005	36,321	32,472
Provision for loan and lease losses	0	0	0	0
Net interest income after provision for loan and lease losses	11,689	12,005	36,321	32,472
Noninterest income
Service fees on deposits and other banking services	382	346	1,176	985
Net gain on sale of securities available for sale	0	0	48	0
Net (loss) gain on sale of other assets	0	(16)	(4)	(14)
Other noninterest income	733	634	2,086	2,393
Total noninterest income	1,115	964	3,306	3,364
Noninterest expense
Salaries and employee benefits	5,809	5,796	17,885	17,171
Occupancy	591	659	1,799	1,958
Equipment and depreciation	438	430	1,341	1,248
Data processing	412	377	1,184	1,063
FDIC expense	189	294	738	859
Other real estate owned expense, net	(16)	0	(8)	0
Professional fees	655	958	2,041	3,100
Business development	257	139	755	496
Loan related expense	181	(5)	534	194
Insurance	62	62	187	186
Other operating expense	424	466	1,378	1,374
Total noninterest expense	9,002	9,176	27,834	27,649
Income before income taxes	3,802	3,793	11,793	8,187
Income tax (benefit) provision	(98)	37	(11,183)	150
Net income allocable to common shareholders	$ 3,900	$ 3,756	$ 22,976	$ 8,037
Basic income per common share:
Net income allocable to common shareholders (in dollars per share)	$ 0.17	$ 0.16	$ 0.98	$ 0.35
Diluted income per common share:
Net income available to allocable shareholders (in dollars per share)	$ 0.17	$ 0.16	$ 0.98	$ 0.35
Weighted average number of common shares outstanding:
Basic (in shares)	22,995,574	23,092,951	23,121,083	23,060,321
Diluted (in shares)	23,598,267	23,331,413	23,535,408	23,290,068

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 3,900	$ 3,756	$ 22,976	$ 8,037
Other comprehensive (loss) income, net of tax:
Change in unrealized holding (loss) gain on securities available for sale	(105)	262	(493)	914
Less: Reclassification adjustment for change in accounting principle	0	0	(97)	0
Less: Reclassification adjustment for net gains included in net income	0	0	48	0
Net unrealized holding (loss) gain on securities available for sale	(105)	262	(444)	914
Total comprehensive income	$ 3,795	$ 4,018	$ 22,532	$ 8,951

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Series A Non-Voting Preferred stock	Common stock	Retained earnings (accumulated deficit)	Accumulated other comprehensive income (loss)
Beginning Balance at Dec. 31, 2016					$ (1,842)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive loss					699
Ending Balance (in shares) at Dec. 31, 2017		0	23,233,000
Ending Balance at Dec. 31, 2017	$ 112,876	$ 0	$ 150,689	$ (36,670)	(1,143)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Implementation of ASU 2016-01	(97)			(97)
Exchange of common stock for Series A Non-Voting Preferred Stock (in shares)		1,467,155	(1,467,155)
Exchange of common stock for Series A Non-Voting Preferred Stock	0	$ 8,480	$ (8,480)	0
Issuance of restricted stock, net (in shares)			77,000
Common stock based compensation expense	$ 649		$ 649
Common stock options exercised (in shares)	75,108		75,000
Common stock options exercised	$ 361		$ 361
Net income	22,976			22,976
Other comprehensive loss	(444)				(444)
Ending Balance (in shares) at Sep. 30, 2018		1,467,000	21,918,000
Ending Balance at Sep. 30, 2018	$ 136,321	$ 8,480	$ 143,219	$ (13,791)	$ (1,587)

CONSOLIDATED STATEMENTS OF CASH

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	$ 22,976	$ 8,037
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	300	318
Amortization of premium on securities	141	172
Net gain on sale of securities available for sale	(48)	0
Net amortization of deferred fees and unearned income on loans	23	(435)
Net gain on sales of other real estate owned	(29)	0
Net gain on sale of premises and equipment	0	(2)
Net loss on sale of other assets	4	16
Stock-based compensation expense	649	593
Other	59	0
Changes in operating assets and liabilities:
Net increase in accrued interest receivable	(369)	(863)
Net decrease (increase) in other assets	1,542	(526)
Net increase in deferred taxes	(11,183)	0
Net (increase) decrease in income taxes receivable	(53)	27
Net increase in accrued interest payable	7	71
Net (decrease) increase in other liabilities	(2,894)	441
Net cash provided by operating activities	11,125	7,849
Cash Flows From Investing Activities:
Net decrease in interest-bearing time deposits with financial institutions	500	250
Maturities of and principal payments received on securities available for sale and other stock	4,694	5,700
Purchase of securities available for sale and other stock	(3,211)	(3,033)
Proceeds from sale of securities available for sale and other stock	6,883	0
Purchase of other investments	(175)	(133)
Proceeds from sale of other real estate owned	827	0
Net increase in loans	(19,800)	(95,719)
Purchases of premises and equipment	(346)	(211)
Proceeds from sale of other assets	32	107
Proceeds from sale of premises and equipment	0	2
Net cash used in investing activities	(10,596)	(93,037)
Cash Flows From Financing Activities:
Net (decrease) increase in deposits	(22,298)	53,220
Proceeds from borrowings	41,000	30,000
Payments of borrowings	(41,727)	(30,000)
Proceeds from exercise of common stock options	361	996
Net cash (used in) provided by financing activities	(22,664)	54,216
Net decrease in cash and cash equivalents	(22,135)	(30,972)
Cash and Cash Equivalents, beginning of period	198,208	138,845
Cash and Cash Equivalents, end of period	176,073	107,873
Supplementary Cash Flow Information:
Cash paid for interest on deposits and other borrowings	9,819	5,218
Cash paid for income taxes	59	123
Non-Cash Investing and Financing Activities:
Transfer of loans into other assets	15	217
Transfer of loans into other real estate owned	1,346	0
Impact of change in accounting principle	97	0
Assumption of debt upon foreclosure of property	727	0
Exchange of common stock for preferred stock	$ 8,480	$ 0

Nature of Business

Nature of Business	9 Months Ended
	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business Organization Pacific Mercantile Bancorp (“PMBC”) is a bank holding company which, through its wholly owned subsidiary, Pacific Mercantile Bank (the “Bank”), is engaged in the commercial banking business in Southern California. PMBC is registered as a one bank holding company under the United States Bank Holding Company Act of 1956, as amended, and, as such, is regulated by the Board of Governors of the Federal Reserve System (the “Federal Reserve Board”) and the Federal Reserve Bank of San Francisco (“FRBSF”) under delegated authority from the Federal Reserve Board. Substantially all of our operations are conducted and substantially all of our assets are owned by the Bank, which accounts for substantially all of our consolidated revenues, expenses, and income. The Bank provides a full range of banking services to small and medium-size businesses and professionals primarily in Orange, Los Angeles, San Bernardino and San Diego counties in Southern California and is subject to competition from, among other things, other banks and financial institutions and from financial services organizations conducting operations in those same markets. The Bank is chartered by the California Department of Business Oversight under the Division of Financial Institutions and is a member of the FRBSF. In addition, the deposit accounts of the Bank’s customers are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to the maximum amount allowed by law. PM Asset Resolution, Inc. (“PMAR”) was a wholly owned subsidiary of PMBC, which existed for the purpose of purchasing certain non-performing loans and other real estate from the Bank and thereafter collecting on or disposing of those assets. PMAR was dissolved and all remaining capital was returned to PMBC during the third quarter of 2018. PMBC, the Bank and PMAR are sometimes referred to, together, on a consolidated basis, in this report as the “Company” or as “we”, “us” or “our”.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Except as discussed below, our accounting policies are described in Note 2, Significant Accounting Policies of our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 (“Form 10-K”). Interim Consolidated Financial Statements Basis of Presentation Our interim consolidated financial statements are prepared in accordance with generally accepted accounting principles in effect in the United States (“GAAP”) for interim financial information pursuant to rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), including instructions to Form 10-Q and Article 10 of Regulation S-X, on a basis consistent with prior periods. Our financial statements reflect all adjustments that are, in the opinion of management, necessary to present a fair statement of the results for the interim periods presented. The interim results are not necessarily indicative of operating results for the full year. The interim information should be read in conjunction with our audited consolidated financial statements in our Form 10-K. Use of Estimates The preparation of the financial statements in conformity with GAAP requires us to make certain estimates and assumptions that could affect the reported amounts of certain of our assets, liabilities, and contingencies at the date of the financial statements and the reported amounts of our revenues and expenses during the reporting periods. For the fiscal periods covered by this report, those estimates related primarily to our determinations of the allowance for loan and lease losses (“ALLL”), the fair values of securities available for sale, and the determination of the valuation allowance pertaining to deferred tax assets. If circumstances or financial trends on which those estimates were based were to change in the future or there were to occur any currently unanticipated events affecting the amounts of those estimates, our future financial position or results of operations could differ, possibly materially, from those expected at the current time. Principles of Consolidation Our consolidated financial statements for the three and nine months ended September 30, 2018 and 2017 include the accounts of PMBC, the Bank and PMAR. All significant intercompany balances and transactions were eliminated in consolidation. Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers (Topic 606),” which amended its guidance on revenue recognition to conform with international accounting guidance under the International Accounting Standards Board. The ASU provides a framework for addressing revenue recognition and replaces most existing revenue recognition guidance, as well as requires increased disclosure requirements. In August 2015, the FASB issued ASU 2015-14 to defer the effective date of ASU 2014-09 by one year. Accordingly, this guidance is effective for interim and annual periods beginning after December 15, 2017 with early adoption permitted for interim and annual periods beginning after December 15, 2016. We adopted this guidance on January 1, 2018 using the modified retrospective approach. Adoption of this guidance did not have a significant impact on our financial statements as the accounting for interest income on loans and investments, loan service fee income, prepayment fees, and loan origination fees are excluded from the scope of this standard. Upon implementation of this guidance, the cumulative effect of any adjustments was deemed immaterial and thus not significant. As such, the expanded disclosures required by the guidance, including the disaggregated revenue disclosures, were not deemed necessary since interest income sources are scoped out and there are no additional significant sources of non-interest income to be broken out on the consolidated statement of operations. In January 2016, the FASB issued ASU 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities,” which enhances the reporting model for financial instruments to provide users of financial statements with more useful information. Some of the provisions include: requiring equity investments to be measured at fair value with changes in fair value recognized in net income, simplifying the impairment assessment of equity investments without readily determinable fair values, eliminating the requirement to disclose the method and significant assumptions used to estimate fair value on financial instruments measured at amortized cost on the balance sheet, requiring public business entities to use the exit price notion when measuring the fair value of financial instruments, requiring the reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the organization has elected to measure the liability at fair value in accordance with the fair value option, requiring separate presentation of financial assets and liabilities by measurement category and form of financial asset on the balance sheet or notes to the financial statements, and clarifying that the reporting organization should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the organization's other deferred tax assets. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption was not permitted for public companies. We adopted this guidance on January 1, 2018. We recorded a $97 thousand adjustment to our beginning retained earnings upon adoption of this guidance as we had one available-for-sale equity investment where the change in fair value is currently recognized in net income, as compared to the previous practice of flowing through changes in fair value to other comprehensive income. This investment was sold during the three months ended March 31, 2018,which limited the impact of this accounting change on our consolidated financial statements and on our disclosures related to investments. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842),” which requires lessees to recognize the following for all leases (with the exception of short-term leases) at the commencement date: a lease liability measured on a discounted basis and a right-of-use asset a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged and the accounting for sale and leaseback transactions were simplified. This guidance is effective for interim and annual periods beginning after December 15, 2018. Early adoption is permitted. We will adopt this guidance on January 1, 2019. We expect our statement of financial condition to be grossed up on both the asset and liability side to reflect our lease obligations, and we do not expect adoption of this guidance to have a material impact on our consolidated financial statements or on our disclosures related to leases. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” which requires the measurement of all expected credit losses for financial assets held at the reporting date, based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions will now use forward-looking information to better inform their credit loss estimates. Additionally, the ASU amends the accounting guidance for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. This guidance is effective for interim and annual periods beginning after December 15, 2019. Early adoption is permitted for interim and annual periods beginning after December 15, 2018. We will adopt this guidance on January 1, 2020 and expect that it will have a material impact on the determination of our ALLL. We are unable to estimate the expected impact to the ALLL upon adoption due to various factors, primarily the fine tuning of our qualitative assumptions used within our preliminary model, uncertainty regarding economic conditions and the size and mix of our loan portfolio at the time of adoption, which could impact our historical loss factors. We are currently working with our existing ALLL software provider on further developing the model to perform the ALLL calculations upon adoption and we believe that we currently have in place the internal team capable of handling this implementation. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” which provides guidance for classification of specific items on the statement of cash flows. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption is permitted. We adopted this guidance on January 1, 2018 and it did not have a material impact on our consolidated statement of cash flows. In May 2017, the FASB issued ASU 2017-09, “Compensation — Stock Compensation (Topic 718): Scope of Modification Accounting,” which provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption is permitted. We adopted this guidance on January 1, 2018 and it did not have an impact on our consolidated financial statements and disclosures. In July 2018, the FASB issued ASU 2018-11, “Leases (Topic 842): Targeted Improvements,” which provides an additional transition method upon adoption of ASU 2016-02. The guidance allows an entity to apply the new leases standard at the adoption date and recognize a cumulative-effect adjustment to beginning retained earnings in the period of adoption. This guidance is effective upon an entity's adoption of the leases standard. We plan to adopt this guidance on January 1, 2019 and expect it will not have a material impact on our consolidated financial statements and disclosures. In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement,” which amends the disclosure requirements related to fair value. The guidance removes disclosure related to transfers between Level 1 and Level 2 of the fair value hierarchy, the timing of these transfers and the valuation processes for Level 3 fair value measurements. Additional disclosures required as a result of adoption of this ASU will include the change in Level 3 unrealized gains and losses included in other comprehensive income and the range and weighted average of significant observable inputs used to develop Level 3 fair value measurements. This guidance is effective for interim and annual periods beginning after December 15, 2019. Early adoption is permitted. An entity is permitted to early adopt any removed or modified disclosures upon issuance of ASU 2018-13 and delay adoption of the additional disclosure requirements until their effective date. We are currently evaluating this guidance to determine the date of adoption and impact on the Company.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Under FASB Accounting Standards Codification (“ASC”) 820-10, we group assets and liabilities at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are: Level 1 Valuation is based upon quoted prices for identical instruments traded in active markets. Level 2 Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. Risks with Fair Value Measurements Fair value estimates are made at a discrete point in time based on relevant market information and other information about the financial instruments. Because no active market exists for a significant portion of our financial instruments, fair value estimates are based in large part on judgments we make primarily regarding current economic conditions, risk characteristics of various financial instruments, prepayment rates, and future expected loss experience. These estimates are subjective in nature and invariably involve some inherent uncertainties. Additionally, the occurrence of unexpected events or changes in circumstances can occur that could require us to make changes to our assumptions and which, in turn, could significantly affect and require us to make changes to our previous estimates of fair value. In addition, the fair value estimates are based on existing on and off-balance sheet financial instruments without attempting to estimate the value of existing and anticipated future customer relationships and the value of assets and liabilities that are not considered financial instruments, such as premises and equipment and other real estate owned (“OREO”). Measurement Methodology Cash and Cash Equivalents. The fair value of cash and cash equivalents approximates its carrying value. Interest-Bearing Deposits with Financial Institutions. The fair values of interest-bearing deposits maturing within one year approximate their carrying values. FHLB and FRBSF Stock. The Bank is a member of the Federal Home Loan Bank of San Francisco (“FHLB”) and the FRBSF. As members, we are required to own stock of the FHLB and the FRBSF, the amount of which is based primarily on the level of our borrowings from those institutions. We also have the right to acquire additional shares of stock in either or both of the FHLB and the FRBSF. During the three and nine months ended September 30, 2018 , we purchased no FHLB stock. During the three and nine months ended September 30, 2018 , we purchased 1,218 and 11,163 shares of FRBSF stock, respectively. No shares of FHLB stock or FRBSF stock were called during the three and nine months ended September 30, 2018 . The fair values of the FHLB and FRBSF stock are equal to their respective carrying amounts, are classified as restricted securities and are periodically evaluated for impairment based on our assessment of the ultimate recoverability of our investments in that stock. Any cash or stock dividends paid to us on such stock are reported as income. Investment Securities Available for Sale. Fair value measurement for our investment securities available for sale is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 investment securities include those traded on an active exchange, such as the New York Stock Exchange, and U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets. Level 2 investment securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. Securities classified as Level 3 include asset-backed securities in less liquid markets. Equity Investments Without Readily Determinable Fair Value . Equity investments without readily determinable fair value are accounted for under the measurement alternative method of accounting. These investments are measured at cost, less any impairment, plus or minus any changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. Any cash or stock dividends paid to us on such investments are reported as noninterest income. Impaired Loans . Loans measured for impairment are measured at an observable market price (if available), or the fair value of the loan’s collateral (if the loan is collateral dependent). The fair value of an impaired loan may be estimated using one of several methods, including collateral value, market value of similar debt, liquidation value and discounted cash flows. Those impaired loans not requiring a specific loan loss reserve represent loans for which the fair value of the expected repayments or collateral exceeds the recorded investments in such loans. When the fair value of the collateral is based on an observable market price or a current appraised value, we record the impaired loan at Level 2. When an appraised value is not available or we determine that the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we record the impaired loan at Level 3. Loans . The fair value for loans with variable interest rates less a credit discount is the carrying amount. The fair value of fixed rate loans is derived by calculating the present value of expected future cash flows discounted at the loan’s original interest rate by the various homogeneous categories of loans. All loans have been adjusted to reflect changes in credit risk and represent the exit price of the loans. Changes are not recorded directly as an adjustment to current earnings or comprehensive income, but rather as an adjustment component in determining the overall adequacy of the loan loss reserve. Other Real Estate Owned. OREO is reported at its net realizable value (fair value less estimated costs to sell) at the time any real estate collateral is acquired by the Bank in satisfaction of a loan. Subsequently, OREO is carried at the lower of carrying value or fair value less estimated costs to sell. Fair value is determined based upon independent market prices, appraised values of the collateral or management’s estimation of the value of the collateral. When the fair value of the collateral is based on an observable market price or a current appraised value, we record the foreclosed asset at Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we record the foreclosed asset at Level 3. Other Foreclosed Assets. Other foreclosed assets are reported at their net realizable value (fair value less estimated costs to sell) at the time any collateral other than real estate is acquired by the Bank in satisfaction of a loan. Subsequently, other foreclosed assets are carried at the lower of carrying value or fair value less estimated costs to sell. Fair value is determined based upon independent market prices, appraised values of the collateral or management’s estimation of the value of the collateral. When the fair value of the collateral is based on an observable market price or a current appraised value, we record the foreclosed asset at Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we record the foreclosed asset at Level 3. Deposits. Deposits are carried at historical cost. The carrying amounts of deposits from savings and money market accounts are deemed to approximate fair value as they either have no stated maturities or short-term maturities. Certificates of deposit are estimated utilizing discounted cash flow techniques. The interest rates applied are rates currently being offered for similar certificates of deposit. Borrowings. The fair value of borrowings is the carrying amount for those borrowings that mature on a daily basis. The fair value of term borrowings is derived by calculating the discounted value of future cash flows expected to be paid out by the Company. We classify our borrowings in Level 2 of the fair value hierarchy. Junior Subordinated Debentures. The fair value of the junior subordinated debentures is based on quoted market prices of the underlying securities. These securities are variable rate in nature and repriced quarterly. We classify our junior subordinated debentures in Level 2 of the fair value hierarchy. Commitments to Extend Credit and Standby Letters of Credit. The fair value of commitments to extend credit and standby letters of credit are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. Interest Receivable and Interest Payable. The carrying amounts of our accrued interest receivable and accrued interest payable are deemed to approximate fair value. Assets Recorded at Fair Value on a Recurring Basis The following tables show the recorded amounts of assets and liabilities measured at fair value on a recurring basis at September 30, 2018 and December 31, 2017 : At September 30, 2018 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets at Fair Value: Debt securities available for sale U.S. Treasury securities $ 2,970 $ — $ 2,970 $ — Commercial mortgage backed securities issued by U.S. Agencies 2,472 — 2,472 — Residential mortgage backed securities issued by U.S. agencies 24,477 — 24,477 — Total debt securities available for sale at fair value $ 29,919 $ — $ 29,919 $ — At December 31, 2017 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets at Fair Value: Debt securities available for sale U.S. Treasury securities $ 2,971 $ — $ 2,971 $ — Residential mortgage backed securities issued by U.S. agencies 30,122 — 30,122 — Asset-backed security (1) 1,741 — — 1,741 Total debt securities available for sale 34,834 — 33,093 1,741 Equity securities Mutual funds (1) 4,904 4,904 — — Total debt and equity securities available for sale at fair value $ 39,738 $ 4,904 $ 33,093 $ 1,741 (1) These investments were sold during the nine months ended September 30, 2018. Refer to Note 4, Investments for further detail regarding these sales. The changes in Level 3 assets measured at fair value on a recurring basis are summarized as follows for the nine months ended September 30, 2018 : Asset Backed Securities (Dollars in thousands) Balance of recurring Level 3 instruments at December 31, 2017 $ 1,741 Total gains or losses (realized/unrealized): Included in earnings-realized 53 Included in other comprehensive income 251 Sales (2,054 ) Settlements 9 Balance of recurring Level 3 instruments at September 30, 2018 $ — Assets Recorded at Fair Value on a Nonrecurring Basis We may be required, from time to time, to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. These nonrecurring fair value adjustments typically involve application of the lower of cost or market accounting or write-downs of individual assets. Information regarding assets measured at fair value on a nonrecurring basis is set forth in the table below. At September 30, 2018 At December 31, 2017 (Dollars in thousands) Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets at Fair Value: Impaired loans $ 5,881 $ — $ — $ 5,881 $ 6,360 $ — $ — $ 6,360 Other foreclosed assets 15 — 15 — — — — — Other real estate owned 1,275 — 1,275 — — — — — Total $ 7,171 $ — $ 1,290 $ 5,881 $ 6,360 $ — $ — $ 6,360 Significant Unobservable Inputs and Valuation Techniques of Level 3 Fair Value Measurements For our fair value measurements classified in Level 3 of the fair value hierarchy as of September 30, 2018 , a summary of the significant unobservable inputs and valuation techniques is as follows: Fair Value Measurement as of September 30, 2018 Valuation Techniques (2) Unobservable Inputs (2) Range Weighted Average (Dollars in thousands) Assets Impaired loans 5,881 Third-Party Pricing Discounted cash flow N/A (1) N/A (1) $ 5,881 (1) As part of our process, we obtain appraisals for our various properties included within impaired loans which primarily rely upon market comparisons. These market comparisons support our assumption that the carrying value of the respective loans either requires or does not require additional impairment. (2) As of September 30, 2018 , there has been no change to our valuation techniques or the types of unobservable inputs used in the calculation of fair value from December 31, 2017. Fair Value Measurements for Other Financial Instruments The table below provides estimated fair values and related carrying amounts of our financial instruments as of September 30, 2018 and December 31, 2017 , excluding financial assets and liabilities which are recorded at fair value on a recurring basis. Estimated Fair Value At September 30, 2018 At December 31, 2017 Carrying Value Total Level 1 Level 2 Level 3 Carrying Value Total Level 1 Level 2 Level 3 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 176,073 $ 176,073 $ 176,073 $ — $ — $ 198,208 $ 198,208 198,208 — — Interest-bearing deposits with financial institutions 2,420 2,420 2,420 — — 2,920 2,920 2,920 — — Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock 8,823 8,823 8,823 — — 8,107 8,107 8,107 — — Loans, net 1,070,751 1,055,728 — — 1,055,728 1,053,201 1,046,171 — — 1,046,171 Accrued interest receivable 4,241 4,241 4,241 — — 3,872 3,872 3,872 — — Financial liabilities: Noninterest bearing deposits 336,434 336,434 336,434 — — 338,273 338,273 338,273 — — Interest-bearing deposits 780,661 778,751 — 778,751 — 801,120 800,169 — 800,169 — Borrowings 40,000 39,984 — 39,984 — 40,866 41,238 — 41,238 — Junior subordinated debentures 17,527 17,527 — 17,527 — 17,527 17,527 — 17,527 — Accrued interest payable 404 404 404 — — 397 397 397 — —

Investments

Investments	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Investments	Investments Securities Available For Sale, at Fair Value The following table sets forth the major components of securities available for sale and compares the amortized costs and estimated fair market values of, and the gross unrealized gains and losses on, these securities at September 30, 2018 and December 31, 2017 : (Dollars in thousands) September 30, 2018 December 31, 2017 Amortized Cost Gross Unrealized Estimated Fair Value Amortized Cost Gross Unrealized Estimated Fair Value Gain Loss Gain Loss Securities Available for Sale U.S. Treasury securities $ 2,998 $ — $ (28 ) $ 2,970 $ 2,996 $ — $ (25 ) $ 2,971 Commercial mortgage backed securities issued by U.S. Agencies (1) 2,495 — (23 ) 2,472 — — — — Residential mortgage backed securities issued by U.S. Agencies (2) 26,058 1 (1,582 ) 24,477 30,894 5 (777 ) 30,122 Asset backed security (3) — — — — 1,992 — (251 ) 1,741 Mutual funds (4) — — — — 5,000 11 (107 ) 4,904 Total $ 31,551 $ 1 $ (1,633 ) $ 29,919 $ 40,882 $ 16 $ (1,160 ) $ 39,738 (1) Secured by first liens on commercial apartment building mortgages. (2) Secured by closed-end first liens on 1-4 family residential mortgages. (3) Comprised of a security that represented an interest in a pool of trust preferred securities issued by U.S.-based banks and insurance companies. This investment was sold during the nine months ended September 30, 2018. (4) Consisted primarily of mutual fund investments in closed-end first liens on 1-4 family residential mortgages. As a result of the adoption of ASU 2016-01 effective January 1, 2018, the change in fair value for all equity securities is required to be recorded within the income statement and would no longer be included in this table. However, this investment was sold during the nine months ended September 30, 2018 so the only impact from the adoption of ASU 2016-01 in 2018 relates to the adjustment to beginning retained earnings for the $97 thousand gross unrealized loss as of December 31, 2017. At September 30, 2018 and December 31, 2017 , U.S. agency residential mortgage backed securities with an aggregate fair market value of $17.6 million and $22.7 million , respectively, were pledged to secure repurchase agreements, local agency deposits and treasury, tax and loan accounts. The amortized cost and estimated fair values of securities available for sale at September 30, 2018 and December 31, 2017 are shown in the tables below by contractual maturities taking into consideration historical prepayments based on the prior twelve months of principal payments. Expected maturities will differ from contractual maturities and historical prepayments, particularly with respect to collateralized mortgage obligations, primarily because prepayment rates are affected by changes in conditions in the interest rate market and, therefore, future prepayment rates may differ from historical prepayment rates. At September 30, 2018 Maturing in (Dollars in thousands) One year or less Over one year through five years Over five years through ten years Over ten Years Total Securities available for sale, amortized cost $ 8,776 $ 14,359 $ 7,452 $ 964 $ 31,551 Securities available for sale, estimated fair value 8,387 13,529 7,057 946 29,919 Weighted average yield 1.42 % 1.54 % 1.97 % 2.97 % 1.65 % At December 31, 2017 Maturing in (Dollars in thousands) One year or less Over one year through five years Over five years through ten years Over ten Years Total Securities available for sale, amortized cost (1) $ 5,685 $ 23,772 $ 8,956 $ 2,469 $ 40,882 Securities available for sale, estimated fair value (1) 5,543 23,253 8,727 2,215 39,738 Weighted average yield (1) 1.49 % 1.60 % 1.63 % 3.86 % 1.73 % (1) Included within these balances are equity securities that consisted primarily of mutual fund investments in closed-end first liens on 1-4 family residential mortgages. As a result of the adoption of ASU 2016-01 effective January 1, 2018, the change in fair value for all equity securities is required to be recorded within the income statement and would no longer be included in this table. However, this investment was sold during the nine months ended September 30, 2018 so the only impact from the adoption of ASU 2016-01 in 2018 relates to the adjustment to beginning retained earnings for the $97 thousand gross unrealized loss as of December 31, 2017. We purchased $2.5 million of securities available for sale during the three and nine months ended September 30, 2018 . During the three and nine months ended September 30, 2017 , we purchased $0 and $1.0 million of securities available for sale. During the nine months ended September 30, 2018, we had sales proceeds of $2.1 million on the sale of debt securities available for sale, with a gain of $53 thousand , and sales proceeds of $4.8 million on the sale of our equity securities, with a loss of $5 thousand . We had no sales of securities available for sale during the three months ended September 30, 2018 and the three and nine months ended September 30, 2017 . The tables below indicate, as of September 30, 2018 and December 31, 2017 , the gross unrealized losses and fair values of our investments, aggregated by investment category, and length of time that the individual securities have been in a continuous unrealized loss position. Securities with Unrealized Loss at September 30, 2018 Less than 12 months 12 months or more Total (Dollars in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities $ — $ — $ 2,970 $ (28 ) $ 2,970 $ (28 ) Commercial mortgage backed securities issued by U.S. Agencies 1,472 (23 ) — — 1,472 (23 ) Residential mortgage backed securities issued by U.S. Agencies 385 (3 ) 24,031 (1,579 ) 24,416 (1,582 ) Total $ 1,857 $ (26 ) $ 27,001 $ (1,607 ) $ 28,858 $ (1,633 ) Securities with Unrealized Loss at December 31, 2017 Less than 12 months 12 months or more Total (Dollars in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities $ 2,971 $ (25 ) $ — $ — $ 2,971 $ (25 ) Residential mortgage backed securities issued by U.S. Agencies 1,400 (15 ) 28,241 (762 ) 29,641 (777 ) Asset-backed security — — 1,740 (251 ) 1,740 (251 ) Mutual funds (1) 1,485 (15 ) 2,658 (92 ) 4,143 (107 ) Total $ 5,856 $ (55 ) $ 32,639 $ (1,105 ) $ 38,495 $ (1,160 ) (1) Consisted primarily of mutual fund investments in closed-end first liens on 1-4 family residential mortgages. As a result of the adoption of ASU 2016-01 effective January 1, 2018, the change in fair value for all equity securities is required to be recorded within the income statement and would no longer be included in this table. However, this investment was sold during the nine months ended September 30, 2018 so the only impact from the adoption of ASU 2016-01 in 2018 relates to the adjustment to beginning retained earnings for the $97 thousand gross unrealized loss as of December 31, 2017. We regularly monitor investments for significant declines in fair value. We have determined that declines in the fair values of these investments below their respective amortized costs, as set forth in the tables above, are temporary because (i) those declines were due to interest rate changes and not to a deterioration in the creditworthiness of the issuers of those investment securities, and (ii) we have the ability to hold those securities until there is a recovery in their values or until their maturity. We recognize other-than-temporary impairments (“OTTI”) to our available-for-sale debt securities in accordance with FASB ASC 320-10. When there are credit losses associated with, but we have no intention to sell, an impaired debt security, and it is more likely than not that we will not have to sell the security before recovery of its cost basis, we will separate the amount of impairment, or OTTI, between the amount that is credit-related and the amount that is related to non-credit factors. Credit-related impairments are recognized in our consolidated statements of operations. Any non-credit-related impairments are recognized and reflected in other comprehensive income in our consolidated statements of financial condition. Through the impairment assessment process, we determined that there were no available-for-sale debt securities that were other-than-temporarily impaired at September 30, 2018 . We recorded no impairment credit losses on available-for-sale debt securities in our consolidated statements of operations for the three and nine months ended September 30, 2018 and 2017 . We have made a determination that the remainder of our securities with respect to which there were unrealized losses as of September 30, 2018 are not other-than-temporarily impaired, because we have concluded that we have the ability to continue to hold those securities until their respective fair market values increase above their respective amortized costs or, if necessary, until their respective maturities. In reaching that conclusion we considered a number of factors and other information, which included: (i) the significance of each such security, (ii) the amount of the unrealized losses attributable to each such security, (iii) our liquidity position, (iv) the impact that retention of those securities could have on our capital position and (v) our evaluation of the expected future performance of these securities (based on the criteria discussed above). Equity Investments Without Readily Determinable Fair Value As of September 30, 2018 , we had two investments in limited partnerships without a readily determinable fair value. As of September 30, 2018 , we owned less than 3% of the total investment in each partnership. Under ASU 2016-01, we elected to measure these equity investments using the measurement alternative, which requires that these investments are measured at cost, less any impairment, plus or minus any changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. During the three and nine months ended September 30, 2018 , these investments were not impaired and there were no observable price changes. As a result, the balance shown below as of September 30, 2018 represents the cost of the investments and is included within other assets on the consolidated statements of financial condition. Prior to the adoption of ASU 2016-01, these investments were accounted for under the cost method of accounting and included within other assets on the consolidated statements of financial condition. During the three and nine months ended September 30, 2018 , we had $34 thousand and $175 thousand , respectively, of capital contributions to these investments. We had $0 and $133 thousand , respectively, of capital contributions to these investments during the three and nine months ended September 30, 2017 . As of September 30, 2018 and December 31, 2017 , our equity investments without readily determinable fair value were as follows: September 30, 2018 December 31, 2017 (Dollars in thousands) Equity investments without readily determinable fair value $ 1,069 $ 893

Loans and Allowance for Loan an

Loans and Allowance for Loan and Lease Losses	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Loans and Allowance for Loan and Lease Losses	Loans and Allowance for Loan and Lease Losses The loan portfolio consisted of the following at: September 30, 2018 December 31, 2017 (Dollars in thousands) Amount Percent Amount Percent Commercial loans $ 414,995 38.4 % $ 394,493 37.1 % Commercial real estate loans – owner occupied 226,861 21.0 % 214,365 20.1 % Commercial real estate loans – all other 232,316 21.5 % 228,090 21.4 % Residential mortgage loans – multi-family 88,563 8.2 % 114,302 10.7 % Residential mortgage loans – single family 21,634 2.0 % 24,848 2.3 % Construction and land development loans 36,961 3.4 % 34,614 3.3 % Consumer loans 59,585 5.5 % 53,918 5.1 % Gross loans 1,080,915 100.0 % 1,064,630 100.0 % Deferred fee (income) costs, net 3,299 2,767 Allowance for loan and lease losses (13,463 ) (14,196 ) Loans, net $ 1,070,751 $ 1,053,201 At September 30, 2018 and December 31, 2017 , real estate loans of approximately $772 million and $669 million , respectively, were pledged to secure borrowings obtained from the FHLB and to support our unfunded borrowing capacity. During the nine months ended September 30, 2018 , we sold $15.1 million of commercial real estate loans - all other at par value. No loans were sold during the three months ended September 30, 2018 and the three and nine months ended September 30, 2017. During the three and nine months ended September 30, 2018 and the three months ended September 30, 2017, we purchased no loans. During the nine months ended September 30, 2017, we purchased $30.1 million of performing commercial real estate loans - owner occupied and commercial real estate loans - all other. Allowance for Loan and Lease Losses The ALLL represents our estimate of credit losses in our loan and lease portfolio that are probable and estimable at the balance sheet date. We employ economic models that are based on bank regulatory guidelines, industry standards and our own historical loan loss experience, as well as a number of more subjective qualitative factors, to determine both the sufficiency of the ALLL and the amount of the provisions that are required to increase or replenish the ALLL. The ALLL is first determined by (i) analyzing all classified loans (graded as “Substandard” or “Doubtful” under our internal asset quality grading parameters) on nonaccrual status for loss exposure and (ii) establishing specific reserves as needed. ASC 310-10 defines loan impairment as the existence of uncertainty concerning collection of all principal and interest in accordance with the contractual terms of a loan. For collateral dependent loans, impairment is typically measured by comparing the loan amount to the fair value of collateral, less estimated costs to sell, with any “shortfall” amount charged off. Other methods can be used in estimating impairment, including market price and the present value of expected future cash flows discounted at the loan’s original interest rate. We are an active lender with the U.S. Small Business Administration and collection of a percentage of the loan balance of many of the loans originated is guaranteed. The ALLL reserves are calculated against the non-guaranteed loan balances. On a quarterly basis, we utilize a classification based loan loss migration model as well as review individual loans in determining the adequacy of the ALLL for homogenous pools of loans that are not subject to specific reserve allocations. Our loss migration analysis tracks 16 quarters of loan loss history and industry loss factors to determine historical losses by classification category for each loan type, except certain consumer loans (automobile, mortgage and credit cards). We then apply these calculated loss factors, together with qualitative factors based on external economic conditions and trends and internal assessments, to the outstanding loan balances in each homogenous group of loans, and then, using our internal asset quality grading parameters, we grade the loans as “Pass,” “Special Mention,” “Substandard” or “Doubtful”. We analyze impaired loans individually. This grading is based on the credit classifications of assets as prescribed by government regulations and industry standards and is separated into the following groups: • Pass: Loans classified as pass include current loans performing in accordance with contractual terms, installment/consumer loans that are not individually risk rated, and loans which exhibit certain risk factors that require greater than usual monitoring by management. • Special Mention: Loans classified as special mention, while generally not delinquent, have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or in the Bank’s credit position at some future date. • Substandard: Loans classified as substandard have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. There is a distinct possibility that the Bank will sustain some loss if the deficiencies are not corrected. • Doubtful: Loans classified as doubtful have all the weaknesses inherent in a substandard loan, and may also be at delinquency status and have defined weaknesses based on currently existing facts, conditions and values making collection or liquidation in full highly questionable and improbable. Set forth below is a summary of the activity in the ALLL, by portfolio type, during the three and nine months ended September 30, 2018 and 2017: (Dollars in thousands) Commercial Real Estate Construction and Land Development Consumer and Single Family Mortgages Unallocated Total ALLL in the three months ended September 30, 2018: Balance at beginning of period $ 7,493 $ 2,953 $ 327 $ 1,578 $ 1,018 $ 13,369 Charge offs (416 ) — — (3 ) — (419 ) Recoveries 448 60 — 5 — 513 Provision (229 ) 664 81 (21 ) (495 ) — Balance at end of period $ 7,296 $ 3,677 $ 408 $ 1,559 $ 523 $ 13,463 ALLL in the nine months ended September 30, 2018: Balance at beginning of period $ 9,155 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,196 Charge offs (1,840 ) — — (3 ) — (1,843 ) Recoveries 1,009 60 — 41 — 1,110 Provision (1,028 ) 711 (242 ) 478 81 — Balance at end of period $ 7,296 $ 3,677 $ 408 $ 1,559 $ 523 $ 13,463 ALLL in the three months ended September 30, 2017: Balance at beginning of period $ 10,113 $ 4,657 $ 157 $ 1,123 $ 1,128 $ 17,178 Charge offs (2,228 ) — — (47 ) — (2,275 ) Recoveries 140 — — 5 — 145 Provision 1,140 (615 ) 189 (89 ) (625 ) — Balance at end of period $ 9,165 $ 4,042 $ 346 $ 992 $ 503 $ 15,048 ALLL in the nine months ended September 30, 2017: Balance at beginning of period $ 11,276 $ 4,226 $ 343 $ 642 $ 314 $ 16,801 Charge offs (2,694 ) (432 ) — (161 ) — (3,287 ) Recoveries 1,334 — 27 173 — 1,534 Provision (751 ) 248 (24 ) 338 189 — Balance at end of period $ 9,165 $ 4,042 $ 346 $ 992 $ 503 $ 15,048 Set forth below is information regarding loan balances and the related ALLL, by portfolio type, as of September 30, 2018 and December 31, 2017 . (Dollars in thousands) Commercial Real Estate Construction and Land Consumer Unallocated Total ALLL balance at September 30, 2018 related to: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 7,296 3,677 408 1,559 523 13,463 Total $ 7,296 $ 3,677 $ 408 $ 1,559 $ 523 $ 13,463 Loans balance at September 30, 2018 related to: Loans individually evaluated for impairment $ 4,985 $ 850 $ — $ 46 $ — $ 5,881 Loans collectively evaluated for impairment 410,010 546,890 36,961 81,173 — 1,075,034 Total $ 414,995 $ 547,740 $ 36,961 $ 81,219 $ — $ 1,080,915 ALLL balance at December 31, 2017 related to: Loans individually evaluated for impairment $ 7 $ — $ — $ — $ — $ 7 Loans collectively evaluated for impairment 9,148 2,906 650 1,043 442 14,189 Total $ 9,155 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,196 Loans balance at December 31, 2017 related to: Loans individually evaluated for impairment $ 3,672 $ 2,461 $ — $ 227 $ — $ 6,360 Loans collectively evaluated for impairment 390,821 554,296 34,614 78,539 — 1,058,270 Total $ 394,493 $ 556,757 $ 34,614 $ 78,766 $ — $ 1,064,630 Credit Quality The amounts of nonperforming assets and delinquencies that occur within our loan portfolio factor into our evaluation of the adequacy of the ALLL. The following table provides a summary of the delinquency status of loans by portfolio type at September 30, 2018 and December 31, 2017 : (Dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days and Greater Total Past Due Current Total Loans Outstanding Loans >90 Days and Accruing At September 30, 2018 Commercial loans $ 813 $ 5,544 $ 2,669 $ 9,026 $ 405,969 $ 414,995 $ — Commercial real estate loans – owner-occupied 3,870 850 — 4,720 222,141 226,861 — Commercial real estate loans – all other — — — — 232,316 232,316 — Residential mortgage loans – multi-family — — — — 88,563 88,563 — Residential mortgage loans – single family — — — — 21,634 21,634 — Construction and land development loans — — — — 36,961 36,961 — Consumer loans — — — — 59,585 59,585 — Total $ 4,683 $ 6,394 $ 2,669 $ 13,746 $ 1,067,169 $ 1,080,915 $ — At December 31, 2017 Commercial loans $ 1,387 $ — $ 2,125 $ 3,512 $ 390,981 $ 394,493 $ — Commercial real estate loans – owner-occupied — — — — 214,365 214,365 — Commercial real estate loans – all other — 936 — 936 227,154 228,090 — Residential mortgage loans – multi-family — — — — 114,302 114,302 — Residential mortgage loans – single family — — — — 24,848 24,848 — Construction and land development loans — — — — 34,614 34,614 — Consumer loans — — — — 53,918 53,918 — Total $ 1,387 $ 936 $ 2,125 $ 4,448 $ 1,060,182 $ 1,064,630 $ — Generally, the accrual of interest on a loan is discontinued when principal or interest payments become more than 90 days past due, unless we believe that the loan is adequately collateralized and it is in the process of collection. There were no loans 90 days or more past due and still accruing interest at September 30, 2018 or December 31, 2017 . In certain instances, when a loan is placed on nonaccrual status, previously accrued but unpaid interest is reversed against current income. Subsequent collections of cash are applied as principal reductions when received (referred to as full nonaccrual basis of accounting), except when the ultimate collectability of principal is probable, in which case such payments are applied to accrued and unpaid interest, which is credited to income (referred to as nonaccrual cash basis of accounting). Nonaccrual loans may be restored to accrual status when principal and interest become current and full repayment becomes expected. The following table provides information with respect to loans on nonaccrual status, by portfolio type, as of September 30, 2018 and December 31, 2017 : September 30, 2018 December 31, 2017 (Dollars in thousands) Nonaccrual loans: Commercial loans $ 4,985 $ 3,222 Commercial real estate loans – owner occupied 850 893 Commercial real estate loans – all other — 1,568 Residential mortgage loans – single family — 171 Consumer 46 56 Total (1) $ 5,881 $ 5,910 (1) Nonaccrual loans may include loans that are currently considered performing loans. We classify our loan portfolio using internal asset quality ratings. The following table provides a summary of loans by portfolio type and our internal asset quality ratings as of September 30, 2018 and December 31, 2017 : September 30, 2018 December 31, 2017 (Dollars in thousands) Pass: Commercial loans $ 394,807 $ 375,024 Commercial real estate loans – owner occupied 217,085 207,094 Commercial real estate loans – all other 221,816 226,522 Residential mortgage loans – multi family 88,563 114,302 Residential mortgage loans – single family 21,634 24,677 Construction and land development loans 36,961 34,614 Consumer loans 59,539 53,862 Total pass loans $ 1,040,405 $ 1,036,095 Special Mention: Commercial loans $ 12,692 $ 11,009 Commercial real estate loans – owner occupied 5,056 6,378 Commercial real estate loans – all other 10,500 — Total special mention loans $ 28,248 $ 17,387 Substandard: Commercial loans $ 7,496 $ 8,094 Commercial real estate loans – owner occupied 4,720 893 Commercial real estate loans – all other — 1,568 Residential mortgage loans – single family — 171 Consumer loans 46 56 Total substandard loans $ 12,262 $ 10,782 Doubtful: Commercial loans $ — $ 366 Total doubtful loans $ — $ 366 Total Loans: $ 1,080,915 $ 1,064,630 Impaired Loans A loan generally is classified as impaired when, in our opinion, principal or interest is not likely to be collected in accordance with the contractual terms of the loan agreement. We measure for impairments on a loan-by-loan basis, using either the present value of expected future cash flows discounted at the loan’s effective interest rate, or the fair value of the collateral if the loan is collateral dependent. The following table sets forth information regarding impaired loans, at September 30, 2018 and December 31, 2017 : September 30, 2018 December 31, 2017 (Dollars in thousands) Impaired loans: Nonaccruing loans $ 5,881 $ 5,101 Nonaccruing restructured loans (1) — 809 Accruing restructured loans (1)(2) — 450 Total impaired loans $ 5,881 $ 6,360 Impaired loans less than 90 days delinquent and included in total impaired loans $ 3,212 $ 3,994 (1) As of September 30, 2018, we had no restructured loans. (2) See “ Troubled Debt Restructurings ” below for a description of accruing restructured loans at September 30, 2018 and December 31, 2017. The table below contains additional information with respect to impaired loans, by portfolio type, as of September 30, 2018 and December 31, 2017 : September 30, 2018 December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance (1) Recorded Investment Unpaid Principal Balance Related Allowance (1) (Dollars in thousands) No allowance recorded: Commercial loans $ 4,985 $ 5,821 $ — $ 3,222 $ 5,910 $ — Commercial real estate loans – owner occupied 850 933 — 893 945 — Commercial real estate loans – all other — — — 1,568 1,965 — Residential mortgage loans – single family — — — 171 185 — Consumer loans 46 67 — 56 73 — Total 5,881 6,821 — 5,910 9,078 — With allowance recorded: Commercial loans $ — $ — $ — $ 450 $ 450 $ 7 Total — — — 450 450 7 Total Commercial loans $ 4,985 $ 5,821 $ — $ 3,672 $ 6,360 $ 7 Commercial real estate loans – owner occupied 850 933 — 893 945 — Commercial real estate loans – all other — — — 1,568 1,965 — Residential mortgage loans – single family — — — 171 185 — Consumer loans 46 67 — 56 73 — Total 5,881 6,821 — 6,360 9,528 7 (1) When the discounted cash flows, collateral value or market price equals or exceeds the recorded investment in the loan, then specific reserves are not required to be set aside for the loan within the ALLL. This typically occurs when the impaired loans have been partially charged-off and/or there have been interest payments received and applied to the balance of the principal outstanding. At September 30, 2018 and December 31, 2017 , there were $5.9 million and $5.9 million , respectively, of impaired loans for which no specific reserves had been allocated because these loans, in our judgment, were sufficiently collateralized. Of the impaired loans at September 30, 2018 for which no specific reserves were allocated, $1.6 million had been deemed impaired in the prior year. Average balances and interest income recognized on impaired loans, by portfolio type, for the three and nine months ended September 30, 2018 and 2017 were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Average Balance Interest Income Recognized Average Balance Interest Income Recognized Average Balance Interest Income Recognized Average Balance Interest Income Recognized (Dollars in thousands) No allowance recorded: Commercial loans $ 4,700 $ 39 $ 8,547 $ 19 $ 4,256 $ 101 $ 13,628 $ 89 Commercial real estate loans – owner occupied 856 — 1,164 — 871 — 1,653 — Commercial real estate loans – all other — — 1,613 — 762 — 1,650 — Residential mortgage loans – single family — — 180 — 43 — 196 — Consumer loans 48 — 18 — 51 — 66 1 Total 5,604 39 11,522 19 5,983 101 17,193 90 With allowance recorded: Commercial loans — — 5,314 8 209 — 3,865 24 Total — — 5,314 8 209 — 3,865 24 Total Commercial loans 4,700 39 13,861 27 4,465 101 17,493 113 Commercial real estate loans – owner occupied 856 — 1,164 — 871 — 1,653 — Commercial real estate loans – all other — — 1,613 — 762 — 1,650 — Residential mortgage loans – single family — — 180 — 43 — 196 — Consumer loans 48 — 18 — 51 — 66 1 Total $ 5,604 $ 39 $ 16,836 $ 27 $ 6,192 $ 101 $ 21,058 $ 114 The interest that would have been earned had the impaired loans remained current in accordance with their original terms was $131 thousand and $210 thousand during the three months ended September 30, 2018 and 2017 , respectively, and $293 thousand and $563 thousand during the nine months ended September 30, 2018 and 2017 , respectively. Troubled Debt Restructurings (“TDRs”) Pursuant to the FASB's ASU No. 2011-2, A Creditor’s Determination of whether a Restructuring is a Troubled Debt Restructuring , the Bank's TDRs totaled $0 and $1.3 million at September 30, 2018 and December 31, 2017 , respectively. TDRs consist of loans to which modifications have been made for the purpose of alleviating temporary impairments of the borrower's financial condition and cash flows. Those modifications have come in the form of changes in amortization terms, reductions in interest rates, interest only payments and, in limited cases, concessions to outstanding loan balances. The modifications are made as part of workout plans we enter into with the borrower that are designed to provide a bridge for the borrower’s cash flow shortfalls in the near term. If a borrower works through the near term issues, then in most cases, the original contractual terms of the borrower’s loan will be reinstated. The following table presents loans restructured as TDRs during the three and nine months ended September 30, 2018 and 2017 : Three Months Ended September 30, 2018 September 30, 2017 (Dollars in thousands) Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Performing Commercial loans — $ — $ — — $ — $ — — — — — — — Nonperforming Commercial loans — — — — — — — — — — — — Total Troubled Debt Restructurings (1) — $ — $ — — $ — $ — Nine Months Ended September 30, 2018 September 30, 2017 (Dollars in thousands) Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Performing Commercial loans — $ — $ — 1 $ 489 $ 489 — — — 1 489 489 Nonperforming Commercial loans — — — 2 1,739 1,101 — — — 2 1,739 1,101 Total Troubled Debt Restructurings (1) — $ — $ — 3 $ 2,228 $ 1,590 (1) No outstanding loans were restructured during the three and nine months ended September 30, 2018. During the three and nine months ended September 30, 2018 and 2017 , TDRs that were modified within the preceding 12-month period which subsequently defaulted were as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Number of loans Recorded Investment Number of loans Recorded Investment Number of loans Recorded Investment Number of loans Recorded Investment (Dollars in thousands) Commercial loans — $ — — $ — — $ — — $ — Commercial real estate - owner occupied — $ — — $ — — $ — — $ — Total (1) — $ — — $ — — $ — — $ — (1) During the three and nine months ended September 30, 2018 and 2017, there were no TDRs that were modified within the preceding 12-month period which subsequently defaulted.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes At September 30, 2018 and December 31, 2017 , we have a net deferred tax asset of $11.2 million and $0 , respectively. The net deferred tax asset was $0 at December 31, 2017 as a result of the full valuation allowance recorded against our gross deferred tax asset, which we reversed during the nine months ended September 30, 2018. The components of our net deferred tax asset are as follows at: (Dollars in thousands) September 30, December 31, 2018 2017 Deferred tax asset: Allowance for loan and lease losses $ 3,980 $ 4,207 Other than temporary impairment on securities 56 56 Deferred compensation 654 693 Litigation reserve 131 131 Other accrued expenses 878 927 Charitable contributions 241 241 Reserve for unfunded commitments 103 103 Tax credits 60 60 Net operating loss carry forward 5,215 9,754 Stock based compensation 535 363 Depreciation and amortization — — Unrealized losses on securities and deferred compensation 483 338 Total deferred tax assets 12,336 16,873 Deferred tax liabilities: Depreciation and amortization (133 ) (133 ) Other (976 ) (803 ) Total deferred tax liabilities (1,109 ) (936 ) Valuation allowance — (15,937 ) Total net deferred tax asset $ 11,227 $ — For both the three and nine months ended September 30, 2018 , we had an income tax benefit of $98 thousand and $11.2 million , respectively, as a result of our net income during the third quarter of 2018 and the release of our full valuation allowance of $11.1 million on our net deferred tax asset during the second quarter of 2018, discussed further below. Accounting rules specify that management must evaluate the deferred tax asset on a recurring basis to determine whether enough positive evidence exists to determine whether it is more-likely-than-not that the deferred tax asset will be available to offset or reduce future taxes. The tax code allows net operating losses incurred prior to December 31, 2017 to be carried forward for 20 years from the date of the loss, and based on its evaluation, management believes that the Company will be able to realize the deferred tax asset within the period that our net operating losses may be carried forward. Due to the hierarchy of evidence that the accounting rules specify, management determined that there continued to be enough positive evidence to support no valuation allowance on our deferred tax asset at September 30, 2018 . Significant positive evidence included our three-year cumulative income position, continued improvement in asset quality, and the expectation that we will continue to have positive earnings based on eight trailing quarters of positive income and our forecast. Negative evidence included our accumulated deficit. The value of our deferred tax asset at June 30, 2018 was computed based upon an estimate of taxable income for the full year of 2018. The benefit during the third quarter of 2018 was due to a slight decrease in forecasted earnings. The amount of the release benefited through the rate decreased by $98 thousand which was offset by the need to increase the discrete benefit for the quarter by that same amount. Only minimal tax provision is expected for the fourth quarter of 2018. For the three and nine months ended September 30, 2017 , we had income tax expense of $37 thousand and $150 thousand , respectively. The income tax expense for the three and nine months ended September 30, 2017 represented the payment to the State of California for the cost of doing business within the state and an estimated alternative minimum tax payment. No additional income tax expense was recorded during the three and nine months ended September 30, 2017 as a result of our full valuation allowance. During the nine months ended September 30, 2017, management evaluated the positive and negative evidence and determined that there continued to be enough negative evidence to support the full valuation allowance of $21.7 million at September 30, 2017 . Negative evidence at September 30, 2017 included our accumulated deficit and our three-year cumulative loss position. We file income tax returns with the U.S. federal government and the State of California. As of September 30, 2018, we were subject to examination by the Internal Revenue Service with respect to our U.S. federal tax returns for the 2015 to 2016 tax years and the Franchise Tax Board for California state income tax returns for the 2014 to 2016 tax years. Net operating losses on our U.S. federal and California state income tax returns may be carried forward up to 20 years. As of September 30, 2018, we do not have any unrecognized tax benefits. Our policy is to recognize interest and penalties accrued on any unrecognized tax benefits as a component of tax expense. We did not have any accrued interest or penalties associated with any unrecognized tax benefits, and no interest expense was recognized during the three and nine months ended September 30, 2018 and 2017.

Stock-Based Employee Compensati

Stock-Based Employee Compensation Plans	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Employee Compensation Plans	Stock-Based Employee Compensation Plans In May 2010, our shareholders approved the adoption of our 2010 Equity Incentive Plan (the “2010 Incentive Plan”), which authorized and set aside a total of 400,000 shares of our common stock for issuance on the exercise of stock options or the grant of restricted stock or other equity incentives to our officers, and other key employees and directors. An additional 158,211 shares of common stock were also set aside which was equal to the total of the shares that were available for the grant of equity incentives under our shareholder-approved 2008 and 2004 Equity Incentive Plans (the “Previously Approved Plans”) at the time of the adoption of the 2010 Incentive Plan. Options to purchase a total of 66,442 shares of our common stock granted under the Previously Approved Plans were outstanding at September 30, 2018 . The 2010 Incentive Plan provides that if any of these outstanding options under the Previously Approved Plans expire or are terminated for any reason, then the number of shares that would become available for grants or awards of equity incentives under the 2010 Incentive Plan would be increased by an equivalent number of shares. At the Annual Shareholders meeting held in May 2013, our shareholders approved an additional 800,000 share increase in the maximum number of shares of our common stock that may be issued pursuant to grants or exercises of options or restricted shares or other equity incentives under the 2010 Incentive Plan, of which 306,757 shares of restricted stock, net of shares withheld for taxes, have vested as of September 30, 2018 thereby decreasing the maximum number of shares authorized under the 2010 Incentive Plan. As a result, as of September 30, 2018 , the maximum number of shares that were authorized for the grant of options or other equity incentives under the 2010 Incentive Plan totaled 1,117,896 (assuming that all shares of our common stock subject to options and other equity awards expire or are terminated prior to vesting), or approximately 5% of the shares of our common stock then outstanding. A stock option entitles the recipient to purchase shares of our common stock at a price per share that may not be less than 100% of the fair market value of the Company’s shares on the date the option is granted. Restricted shares may be granted at such purchase prices and on such other terms, including restrictions and Company repurchase or reacquisition rights, as are fixed by the Compensation Committee at the time rights to purchase such restricted shares are granted. Stock Appreciation Rights (“SARs”) entitle the recipient to receive a cash payment in an amount equal to the difference between the fair market value of the Company’s shares on the date of vesting and a “base price” (which, in most cases, will be equal to the fair market value of the Company’s shares on the date the SAR is granted), subject to the right of the Company to make such payment in shares of its common stock at their then fair market value. Options, restricted shares and SARs may vest immediately or in installments over various periods generally ranging up to five years , subject to the recipient’s continued employment or service or the achievement of specified performance goals, as determined by the Compensation Committee at the time it grants or awards the options, the restricted shares or the SARs. Stock options and SARs may be granted for terms of up to 10 years after the date of grant, but will terminate sooner upon or shortly after a termination of service occurring prior to the expiration of the term of the option or SAR. The Company will become entitled to repurchase any unvested restricted shares, at the same price that was paid for the shares by the recipient, or to cancel those shares in the event of a termination of employment or service of the holder of such shares or if any performance goals specified in the award are not satisfied. To date, the Company has not granted any SARs. Under FASB ASC 718-10, we are required to recognize, in our financial statements, the fair value of the options or any restricted shares that we grant as compensation cost over their respective service periods. The fair values of the options that were outstanding at September 30, 2018 under the 2010 Incentive Plan were estimated as of their respective dates of grant using the Black-Scholes option-pricing model. The Company, under the 2010 Incentive Plan, has also granted restricted stock for the benefit of its employees and directors. These restricted shares vest over a period ranging from three to five years for employees and one year for directors. The recipients of restricted shares have the right to vote all shares subject to such grant and receive all dividends with respect to such shares whether or not the shares have vested. The recipients do not pay any cash consideration for the shares. Stock Options The table below summarizes the weighted average assumptions used to determine the fair values of the options granted during the following periods: Three Months Ended September 30, Nine Months Ended September 30, Assumptions with respect to: 2018 2017 2018 2017 Expected volatility — % — % 30 % 33 % Risk-free interest rate — % — % 2.69 % 1.95 % Expected dividends — % — % — % — % Expected term (years) 0.0 0.0 5.8 5.7 Weighted average fair value of options granted during period $ — $ — $ 2.81 $ 2.81 The following table summarizes the stock option activity under the Company’s equity incentive plans during the nine months ended September 30, 2018 and 2017 , respectively. Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share 2018 2017 Outstanding – January 1, 792,577 $ 6.41 1,066,914 $ 6.35 Granted 154,011 8.20 3,000 8.05 Exercised (75,108 ) 4.95 (172,584 ) 5.77 Forfeited/Canceled (7,150 ) 6.47 (68,176 ) 7.06 Outstanding – September 30, 864,330 6.86 829,154 6.42 Options Exercisable – September 30, 588,233 $ 6.49 570,915 $ 6.19 Options Vested – September 30, 588,233 $ 6.49 570,915 $ 6.19 Options to purchase 0 and 20,500 shares of our common stock were exercised during the three months ended September 30, 2018 and 2017 , respectively, and 75,108 and 172,584 shares during the nine months ended September 30, 2018 and 2017 , respectively. The aggregate intrinsic value of options exercised during the three months ended September 30, 2018 and 2017 was $0 thousand and $85 thousand , respectively, and $356 thousand and $310 thousand during the nine months ended September 30, 2018 and 2017 , respectively. The fair value of options that vested during the three months ended September 30, 2018 and 2017 was $8 thousand and $10 thousand , respectively, and $358 thousand and $400 thousand during the nine months ended September 30, 2018 and 2017 , respectively. The following table provides additional information regarding the vested and unvested options that were outstanding at September 30, 2018 . Options Outstanding as of September 30, 2018 Options Exercisable as of September 30, 2018 (1) Exercise Price Vested Unvested Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Life (Years) Shares Weighted Average Exercise Price Per Share $2.97 – $3.99 18,003 — $ 3.48 2.66 18,003 $ 3.48 $4.00 – $4.99 16,000 — 4.34 2.51 16,000 4.34 $5.00– $5.99 15,000 — 5.30 4.68 15,000 5.30 $6.00– $6.99 414,584 81,903 6.61 5.71 414,584 6.57 $7.00-$8.90 124,646 194,194 7.63 8.14 124,646 7.09 588,233 276,097 $ 6.86 6.47 588,233 $ 6.49 (1) The weighted average remaining contractual life of the options that were exercisable as of September 30, 2018 was 5.53 years. The aggregate intrinsic value of options that were outstanding and exercisable under the 2010 Incentive Plan at September 30, 2018 and December 31, 2017 was $1.7 million and $1.4 million , respectively. A summary of the status of the unvested options outstanding as of September 30, 2018 and 2017 , and changes in the weighted average grant date fair values of the unvested options during the nine months ended September 30, 2018 and 2017 , are set forth in the following table. For the nine months ended September 30, 2018 2017 Number of Shares Subject to Options Weighted Average Grant Date Fair Value Per Share Number of Weighted Unvested at the beginning of the period 255,348 $ 2.80 461,944 $ 2.79 Granted 154,011 2.81 3,000 2.81 Vested (126,112 ) 2.84 (141,329 ) 2.83 Forfeited/Canceled (7,150 ) 2.66 (65,376 ) 2.67 Unvested at the end of the period 276,097 2.79 258,239 2.80 At September 30, 2018 , the weighted average period over which nonvested awards were expected to be recognized was 2.27 years. Restricted Stock The following table summarizes the activity related to restricted stock granted, vested and forfeited under our equity incentive plans during the nine months ended September 30, 2018 and 2017 . For the nine months ended September 30, 2018 2017 Number of Shares Average Grant Date Fair Value Per Share Number of Shares Average Grant Date Fair Value Per Share Outstanding at the beginning of the period 103,508 $ 7.33 151,298 $ 6.84 Granted 82,217 8.33 29,907 7.69 Vested (62,564 ) 7.26 (69,107 ) 6.81 Forfeited (4,690 ) 7.55 (18,509 ) 6.82 Outstanding at the end of the period 118,471 $ 8.06 93,589 $ 7.14 Compensation Expense We expect that the compensation expense that will be recognized during the periods presented below in respect of stock options and restricted stock outstanding at September 30, 2018 , will be as follows: Estimated Stock Based Compensation Expense Stock Options Estimated Stock Based Compensation Expense Restricted Stock Estimated Stock Based Compensation Expense Total (Dollars in thousands) For the years ending December 31, Remainder of 2018 $ 111 $ 125 $ 236 2019 193 238 431 2020 153 188 341 2021 45 81 126 2022 and beyond 22 60 82 $ 524 $ 692 $ 1,216 The aggregate amounts of stock based compensation expense recognized in our consolidated statements of operations for the three months ended September 30, 2018 and 2017 were $166 thousand and $188 thousand , respectively, in each case net of taxes, and $458 thousand and $593 thousand for the nine months ended September 30, 2018 and 2017 , respectively, in each case net of taxes.

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share ("EPS")	Earnings Per Share (“EPS”) Basic EPS excludes dilution and is computed by dividing net income or loss allocable to common shareholders by the weighted average number of common shares outstanding for the period. Diluted EPS reflects the potential dilution that could occur if stock options or other contracts to issue common stock were exercised or converted into common stock that would then share in our earnings. The following table shows how we computed basic and diluted EPS for the three and nine months ended September 30, 2018 and 2017 . (In thousands, except per share data) For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Basic EPS: Net income $ 3,900 $ 3,756 $ 22,976 $ 8,037 Less dividends on preferred stock — — — — Less dividends on common stock — — — — Less dividends on unvested shares — — — — Net income allocable to common shareholders $ 3,900 $ 3,756 $ 22,976 $ 8,037 Less earnings allocated to participating securities 64 16 203 39 Earnings allocated to common shareholders $ 3,836 $ 3,740 $ 22,773 $ 7,998 Weighted average common shares outstanding 22,996 23,093 23,121 23,060 Basic earnings per common share $ 0.17 $ 0.16 $ 0.98 $ 0.35 Diluted EPS: Earnings allocated to common shareholders $ 3,900 $ 3,756 $ 22,976 $ 8,037 Weighted average common shares outstanding 22,996 23,093 23,121 23,060 Add dilutive effects of restricted stock grants 115 100 115 112 Add dilutive effects for assumed conversion of Series A preferred stock 271 — 91 — Add dilutive effect for stock options 216 138 208 117 Weighted average diluted common shares outstanding 23,598 23,331 23,535 23,290 Diluted earnings per common share $ 0.17 $ 0.16 $ 0.98 $ 0.35 (1) The basic and diluted earnings per share amounts for the three and nine months ended September 30, 2018 and 2017 are the same under both the Treasury Stock Method and the Two-Class Method as prescribed in FASB ASC 260-10, Earnings Per Share . The weighted average shares that have an antidilutive effect in the calculation of diluted net income per share and have been excluded from the computations above were as follows: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Stock options (1) 140,985 129,431 128,711 357,859 (1) Represents stock options that were excluded from the computation of diluted earnings per common share for the three and nine months ended September 30, 2018 and 2017 as a result of the shares being “out-of-the-money.”

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity Preferred Stock During the three months ended September 30, 2018 , Carpenter Community BancFund, LP and Carpenter Community BancFund-A, LP ("the Carpenter Funds"), the largest shareholders of PMBC, the holding company of the Bank, sold all of their equity interest in PMBC to certain accredited investors in privately negotiated transactions (the "Carpenter Disposition Transactions"). The Carpenter Disposition Transactions included the sale of 1,467,155 shares of a new series of non-voting preferred stock designated as Series A Non-Voting Preferred Stock (the Series A Non-Voting Preferred Stock) that PMBC issued to the Carpenter Funds in exchange (the Exchange) for 1,467,155 shares of PMBC’s common stock owned by the Carpenter Funds. After giving effect to the Exchange, PMBC had 21,917,995 shares of common stock issued and outstanding and 1,467,155 shares of Series A Non-Voting Preferred Stock issued and outstanding. The shares of Series A Non-Voting Preferred Stock were issued to the Carpenter Funds to facilitate the Carpenter Disposition Transactions and have substantially the same rights, preferences and privileges of the common stock, except that the Series A Non-Voting Preferred Stock is not entitled to vote on any matter other than where required under California law and that each share of Series A Non-Voting Preferred Stock has a liquidation preference of $0.0001 per share over the common stock. The shares of common stock and Series A Non-Voting Preferred Stock purchased by investors from the Carpenter Funds in the Carpenter Disposition Transactions are restricted securities subject to trading restrictions under the federal securities laws. The lead investor in the Carpenter Disposition Transactions, Patriot Financial Partners III, L.P., a Delaware limited partnership ("Patriot"), acquired 3,636,363 total common-equivalent shares of PMBC, comprised of 2,169,208 shares of common stock ( 9.9% of the total voting shares outstanding after giving effect to the Exchange) and 1,467,155 shares of the Series A Non-Voting Preferred Stock. After giving effect to the Carpenter Disposition Transactions (including the Exchange), Patriot holds a 15.6% equity interest in the PMBC. Accumulated Other Comprehensive Income (Loss), net Accumulated other comprehensive income (loss), net as of September 30, 2018 and December 31, 2017 was as follows: Unrealized Gain (Loss) on Securities Available-for-Sale, net of tax Accumulated Other Comprehensive Income (Loss), Net (Dollars in thousands) Ending balance as of December 31, 2016 $ (1,842 ) $ (1,842 ) Other comprehensive income before reclassifications (1) 695 695 Amounts reclassified from accumulated other comprehensive income, net of tax 4 4 Other comprehensive income (1) 699 699 Ending balance as of December 31, 2017 $ (1,143 ) $ (1,143 ) Other comprehensive loss before reclassifications, net of tax of $44 thousand (493 ) (493 ) Amounts reclassified from accumulated other comprehensive loss (2) 49 49 Other comprehensive loss, net of tax of $44 thousand (444 ) (444 ) Ending balance as of September 30, 2018 $ (1,587 ) $ (1,587 ) (1) No tax impact as a result of the full valuation allowance recorded against our deferred tax asset at December 31, 2017. (2) This balance consists of the $48 thousand net gain on sale of available for sale debt securities included in our consolidated statement of operations offset by $97 thousand included in our consolidated statement of shareholders' equity as an adjustment to our beginning retained earnings.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Commitments To meet the financing needs of our customers in the normal course of business, we are a party to financial instruments with off-balance sheet risk. These financial instruments include commitments to extend credit and standby letters of credit. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the consolidated financial statements. At September 30, 2018 and December 31, 2017 , we were committed to fund certain loans including letters of credit amounting to approximately $301 million and $295 million , respectively. The contractual amounts of a credit-related financial instrument, such as a commitment to extend credit, a credit-card arrangement or a letter of credit, represent the amount of potential accounting loss should the commitment be fully drawn upon, the customer were to default, and the value of any existing collateral securing the customer’s payment obligation becomes worthless. The loss reserve for unfunded loan commitments was $350 thousand at both September 30, 2018 and December 31, 2017 . As a result, we use the same credit policies in making commitments to extend credit and conditional obligations as we do for on-balance sheet instruments. Commitments generally have fixed expiration dates; however, since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. We evaluate each customer’s creditworthiness on a case-by-case basis, using the same credit underwriting standards that are employed in making commercial loans. The amount of collateral obtained, if any, upon an extension of credit is based on our evaluation of the creditworthiness of the customer. Collateral held varies, but may include accounts receivable, inventory, property, plant and equipment, residential real estate and income-producing commercial properties. Borrowings At September 30, 2018 and December 31, 2017 , our borrowings and contractual obligations consisted of the following: (Dollars in thousands) September 30, 2018 December 31, 2017 FHLB advances—short-term $ 40,000 $ 40,000 Other borrowings—short-term (1) — 866 Total borrowings—short-term 40,000 40,866 FHLB advances—long-term — — Total $ 40,000 $ 40,866 (1) Borrowings had an interest rate of 15% as of December 31, 2017. This represented the portion of a participated loan that was required under GAAP to be recorded as other borrowings as of December 31, 2017. The participated portion of this loan was repurchased during the first quarter of 2018 and is no longer required to be recorded in other borrowings. The table below sets forth the amounts of, the interest rates we pay on, and the maturity dates of these FHLB borrowings. These borrowings had a weighted-average annualized interest rate of 2.20% for the nine months ended September 30, 2018 . Principal Amounts Interest Rate Maturity Dates (Dollars in thousands) 10,000 2.34 % November 28, 2018 10,000 1.77 % December 3, 2018 10,000 2.36 % December 26, 2018 10,000 2.31 % January 15, 2019 At September 30, 2018 , $772 million of loans were pledged to support our FHLB borrowings and our unfunded borrowing capacity. As of September 30, 2018 , we had unused borrowing capacity of $351 million with the FHLB. The highest amount of borrowings outstanding at any month-end during the nine months ended September 30, 2018 was $40.9 million . As of December 31, 2017 , we had $40.0 million of outstanding short-term borrowings and no outstanding long-term borrowings that we had obtained from the FHLB. These borrowings had a weighted-average annualized interest rate of 1.65% for the year ended December 31, 2017 . As of December 31, 2017 , we had unused borrowing capacity of $285 million with the FHLB. The highest amount of borrowings outstanding at any month-end during the year ended December 31, 2017 was $40.9 million . Litigation, Claims and Assessments We are a defendant in or a party to a number of legal actions or proceedings that arise in the ordinary course of business. In some of these actions and proceedings, claims for monetary damages are asserted against us. In accordance with applicable accounting guidance, we establish an accrued liability for lawsuits or other legal proceedings when they present loss contingencies that are both probable and estimable. We estimate any potential loss based upon currently available information and significant judgments and a variety of assumptions, and known and unknown uncertainties. Moreover, the facts and circumstances on which such estimates are based will change over time. Therefore, the amount of any losses we might incur in any lawsuits or other legal proceedings may exceed amounts which we had accrued based on our estimates and those estimates do not represent the maximum loss exposure that we may have in connection with any lawsuits or other legal proceedings. In December 2016, following an ongoing review related to alleged discriminatory practices within our discontinued mortgage banking business, we received notice that the U.S. Department of Justice (“DOJ”) had authorized a potential enforcement action against the Bank. During the nine months ended September 30, 2018 , we settled this matter with the DOJ for $1.0 million , which we have fully accrued and funded as of September 30, 2018 . Based on our evaluation of the remaining lawsuits and other proceedings that were pending against us as of September 30, 2018 , the outcomes in those suits or other proceedings are not expected to have, either individually or in the aggregate, a material adverse effect on our consolidated financial position, results of operations or cash flows. However, in light of the inherent uncertainties involved, some of which are beyond our control, and the very large or indeterminate damages often sought in such legal actions or proceedings, an adverse outcome in one or more of these suits or proceedings could be material to our results of operations or cash flows for any particular reporting period.

Business Segment Information

Business Segment Information	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Business Segment Information	Business Segment Information We have one reportable business segment, commercial banking. The commercial banking segment provides small and medium-size businesses, professional firms and individuals with a diversified range of products and services such as various types of deposit accounts, various types of commercial and consumer loans, cash management services, and online banking services. Since our operating segment derives all of its revenues from interest and noninterest income and interest expense constitutes its most significant expense, this segment is reported below using net interest income (interest income less interest expense) and noninterest income (primarily net gains on sales of small business administration loans and fee income). We do not allocate general and administrative expenses or income taxes to our operating segment. The following table sets forth information regarding the net interest income and noninterest income for our commercial banking segment for the three and nine months ended September 30, 2018 and 2017 . (Dollars in thousands) Commercial Other (1) Total Net interest income for the three months ended September 30, 2018 $ 11,876 $ (187 ) $ 11,689 2017 $ 11,038 $ 967 $ 12,005 Noninterest income for the three months ended September 30, 2018 $ 1,109 $ 6 $ 1,115 2017 $ 959 $ 5 $ 964 Net interest income for the nine months ended September 30, 2018 $ 35,325 $ 996 $ 36,321 2017 $ 31,564 $ 908 $ 32,472 Noninterest income for the nine months ended September 30, 2018 $ 3,288 $ 18 $ 3,306 2017 $ 2,944 $ 420 $ 3,364 Segment Assets at: September 30, 2018 $ 1,319,358 $ 640 $ 1,319,998 December 31, 2017 $ 1,320,454 $ 2,150 $ 1,322,604 (1) Represents net interest income and noninterest income for PMAR and PMBC.

Regulatory Capital

Regulatory Capital	9 Months Ended
	Sep. 30, 2018
Regulatory Capital Requirements [Abstract]
Regulatory Capital	Regulatory Capital Under federal banking regulations that apply to all United States-based bank holding companies over $3 billion in total assets and all federally insured banks, the Bank (on a stand-alone basis) must meet specific capital adequacy requirements that, for the most part, involve quantitative measures, primarily in terms of the ratios of their capital to their assets, liabilities, and certain off-balance sheet items, calculated under regulatory accounting practices. The Company (on a consolidated basis) is below the reporting threshold of $3 billion in total assets and therefore is not subject to the same capital adequacy requirements. Under those regulations, each federally insured bank is determined by its primary federal bank regulatory agency to come within one of the following capital adequacy categories on the basis of its capital ratios: • well-capitalized • adequately capitalized • undercapitalized • significantly undercapitalized; or • critically undercapitalized Certain qualitative assessments also are made by a banking institution’s primary federal regulatory agency that could lead the agency to determine that the banking institution should be assigned to a lower capital category than the one indicated by the quantitative measures used to assess the institution’s capital adequacy. At each successive lower capital category, a banking institution is subject to greater operating restrictions and increased regulatory supervision by its federal bank regulatory agency. The following table sets forth the capital and capital ratios of the Bank (on a stand-alone basis) at September 30, 2018 , as compared to the respective regulatory requirements applicable to them. Applicable Federal Regulatory Requirement For Capital Adequacy Purposes To be Categorized As Well-Capitalized Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Total Capital to Risk Weighted Assets 155,679 12.8 % 104,995 At least 8.625 $ 121,734 At least 10.0 Common Equity Tier 1 Capital to Risk Weighted Assets 141,866 11.7 % 62,389 At least 5.125 $ 79,127 At least 6.5 Tier 1 Capital to Risk Weighted Assets 141,866 11.7 % 80,649 At least 6.625 $ 97,387 At least 8.0 Tier 1 Capital to Average Assets 141,866 10.7 % 53,069 At least 4.0 $ 66,337 At least 5.0 In early July 2013, the Federal Reserve Board and the FDIC issued final rules implementing the Basel III regulatory capital framework and related Dodd-Frank Wall Street Reform and Consumer Protection Act changes. The rules revise minimum capital requirements and adjust prompt correct action thresholds. The final rules revise the regulatory capital elements, add a new common equity Tier 1 capital ratio, increase the minimum Tier 1 capital ratio requirement, and implement a new capital conservation buffer. The rules also permit certain banking organizations to retain, through a one-time election, the existing treatment for accumulated other comprehensive income. The final rules took effect for community banks on January 1, 2015, subject to a transition period for certain parts of the rules. At September 30, 2018 , the Bank (on a stand-alone basis) continued to qualify as a well-capitalized institution under the capital adequacy guidelines described above.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Interim Consolidated Financial Statements Basis of Presentation	Interim Consolidated Financial Statements Basis of Presentation Our interim consolidated financial statements are prepared in accordance with generally accepted accounting principles in effect in the United States (“GAAP”) for interim financial information pursuant to rules and regulations of the U.S. Securities and Exchange Commission (the “SEC”), including instructions to Form 10-Q and Article 10 of Regulation S-X, on a basis consistent with prior periods. Our financial statements reflect all adjustments that are, in the opinion of management, necessary to present a fair statement of the results for the interim periods presented. The interim results are not necessarily indicative of operating results for the full year. The interim information should be read in conjunction with our audited consolidated financial statements in our Form 10-K.
Use of Estimates	Use of Estimates The preparation of the financial statements in conformity with GAAP requires us to make certain estimates and assumptions that could affect the reported amounts of certain of our assets, liabilities, and contingencies at the date of the financial statements and the reported amounts of our revenues and expenses during the reporting periods. For the fiscal periods covered by this report, those estimates related primarily to our determinations of the allowance for loan and lease losses (“ALLL”), the fair values of securities available for sale, and the determination of the valuation allowance pertaining to deferred tax assets. If circumstances or financial trends on which those estimates were based were to change in the future or there were to occur any currently unanticipated events affecting the amounts of those estimates, our future financial position or results of operations could differ, possibly materially, from those expected at the current time.
Principles of Consolidation	Principles of Consolidation Our consolidated financial statements for the three and nine months ended September 30, 2018 and 2017 include the accounts of PMBC, the Bank and PMAR. All significant intercompany balances and transactions were eliminated in consolidation.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers (Topic 606),” which amended its guidance on revenue recognition to conform with international accounting guidance under the International Accounting Standards Board. The ASU provides a framework for addressing revenue recognition and replaces most existing revenue recognition guidance, as well as requires increased disclosure requirements. In August 2015, the FASB issued ASU 2015-14 to defer the effective date of ASU 2014-09 by one year. Accordingly, this guidance is effective for interim and annual periods beginning after December 15, 2017 with early adoption permitted for interim and annual periods beginning after December 15, 2016. We adopted this guidance on January 1, 2018 using the modified retrospective approach. Adoption of this guidance did not have a significant impact on our financial statements as the accounting for interest income on loans and investments, loan service fee income, prepayment fees, and loan origination fees are excluded from the scope of this standard. Upon implementation of this guidance, the cumulative effect of any adjustments was deemed immaterial and thus not significant. As such, the expanded disclosures required by the guidance, including the disaggregated revenue disclosures, were not deemed necessary since interest income sources are scoped out and there are no additional significant sources of non-interest income to be broken out on the consolidated statement of operations. In January 2016, the FASB issued ASU 2016-01, “Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities,” which enhances the reporting model for financial instruments to provide users of financial statements with more useful information. Some of the provisions include: requiring equity investments to be measured at fair value with changes in fair value recognized in net income, simplifying the impairment assessment of equity investments without readily determinable fair values, eliminating the requirement to disclose the method and significant assumptions used to estimate fair value on financial instruments measured at amortized cost on the balance sheet, requiring public business entities to use the exit price notion when measuring the fair value of financial instruments, requiring the reporting organization to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the organization has elected to measure the liability at fair value in accordance with the fair value option, requiring separate presentation of financial assets and liabilities by measurement category and form of financial asset on the balance sheet or notes to the financial statements, and clarifying that the reporting organization should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the organization's other deferred tax assets. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption was not permitted for public companies. We adopted this guidance on January 1, 2018. We recorded a $97 thousand adjustment to our beginning retained earnings upon adoption of this guidance as we had one available-for-sale equity investment where the change in fair value is currently recognized in net income, as compared to the previous practice of flowing through changes in fair value to other comprehensive income. This investment was sold during the three months ended March 31, 2018,which limited the impact of this accounting change on our consolidated financial statements and on our disclosures related to investments. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842),” which requires lessees to recognize the following for all leases (with the exception of short-term leases) at the commencement date: a lease liability measured on a discounted basis and a right-of-use asset a specified asset for the lease term. Under the new guidance, lessor accounting is largely unchanged and the accounting for sale and leaseback transactions were simplified. This guidance is effective for interim and annual periods beginning after December 15, 2018. Early adoption is permitted. We will adopt this guidance on January 1, 2019. We expect our statement of financial condition to be grossed up on both the asset and liability side to reflect our lease obligations, and we do not expect adoption of this guidance to have a material impact on our consolidated financial statements or on our disclosures related to leases. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” which requires the measurement of all expected credit losses for financial assets held at the reporting date, based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions will now use forward-looking information to better inform their credit loss estimates. Additionally, the ASU amends the accounting guidance for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. This guidance is effective for interim and annual periods beginning after December 15, 2019. Early adoption is permitted for interim and annual periods beginning after December 15, 2018. We will adopt this guidance on January 1, 2020 and expect that it will have a material impact on the determination of our ALLL. We are unable to estimate the expected impact to the ALLL upon adoption due to various factors, primarily the fine tuning of our qualitative assumptions used within our preliminary model, uncertainty regarding economic conditions and the size and mix of our loan portfolio at the time of adoption, which could impact our historical loss factors. We are currently working with our existing ALLL software provider on further developing the model to perform the ALLL calculations upon adoption and we believe that we currently have in place the internal team capable of handling this implementation. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments,” which provides guidance for classification of specific items on the statement of cash flows. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption is permitted. We adopted this guidance on January 1, 2018 and it did not have a material impact on our consolidated statement of cash flows. In May 2017, the FASB issued ASU 2017-09, “Compensation — Stock Compensation (Topic 718): Scope of Modification Accounting,” which provides guidance on determining which changes to the terms and conditions of share-based payment awards require an entity to apply modification accounting. This guidance is effective for interim and annual periods beginning after December 15, 2017. Early adoption is permitted. We adopted this guidance on January 1, 2018 and it did not have an impact on our consolidated financial statements and disclosures. In July 2018, the FASB issued ASU 2018-11, “Leases (Topic 842): Targeted Improvements,” which provides an additional transition method upon adoption of ASU 2016-02. The guidance allows an entity to apply the new leases standard at the adoption date and recognize a cumulative-effect adjustment to beginning retained earnings in the period of adoption. This guidance is effective upon an entity's adoption of the leases standard. We plan to adopt this guidance on January 1, 2019 and expect it will not have a material impact on our consolidated financial statements and disclosures. In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework — Changes to the Disclosure Requirements for Fair Value Measurement,” which amends the disclosure requirements related to fair value. The guidance removes disclosure related to transfers between Level 1 and Level 2 of the fair value hierarchy, the timing of these transfers and the valuation processes for Level 3 fair value measurements. Additional disclosures required as a result of adoption of this ASU will include the change in Level 3 unrealized gains and losses included in other comprehensive income and the range and weighted average of significant observable inputs used to develop Level 3 fair value measurements. This guidance is effective for interim and annual periods beginning after December 15, 2019. Early adoption is permitted. An entity is permitted to early adopt any removed or modified disclosures upon issuance of ASU 2018-13 and delay adoption of the additional disclosure requirements until their effective date. We are currently evaluating this guidance to determine the date of adoption and impact on the Company.
Fair Value Measurements	Fair Value Measurements Under FASB Accounting Standards Codification (“ASC”) 820-10, we group assets and liabilities at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are: Level 1 Valuation is based upon quoted prices for identical instruments traded in active markets. Level 2 Valuation is based upon quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-based valuation techniques for which all significant assumptions are observable in the market. Level 3 Valuation is generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates of assumptions that market participants would use in pricing the asset or liability. Valuation techniques include use of option pricing models, discounted cash flow models and similar techniques. Risks with Fair Value Measurements Fair value estimates are made at a discrete point in time based on relevant market information and other information about the financial instruments. Because no active market exists for a significant portion of our financial instruments, fair value estimates are based in large part on judgments we make primarily regarding current economic conditions, risk characteristics of various financial instruments, prepayment rates, and future expected loss experience. These estimates are subjective in nature and invariably involve some inherent uncertainties. Additionally, the occurrence of unexpected events or changes in circumstances can occur that could require us to make changes to our assumptions and which, in turn, could significantly affect and require us to make changes to our previous estimates of fair value. In addition, the fair value estimates are based on existing on and off-balance sheet financial instruments without attempting to estimate the value of existing and anticipated future customer relationships and the value of assets and liabilities that are not considered financial instruments, such as premises and equipment and other real estate owned (“OREO”). Measurement Methodology Cash and Cash Equivalents. The fair value of cash and cash equivalents approximates its carrying value. Interest-Bearing Deposits with Financial Institutions. The fair values of interest-bearing deposits maturing within one year approximate their carrying values. FHLB and FRBSF Stock. The Bank is a member of the Federal Home Loan Bank of San Francisco (“FHLB”) and the FRBSF. As members, we are required to own stock of the FHLB and the FRBSF, the amount of which is based primarily on the level of our borrowings from those institutions. We also have the right to acquire additional shares of stock in either or both of the FHLB and the FRBSF. During the three and nine months ended September 30, 2018 , we purchased no FHLB stock. During the three and nine months ended September 30, 2018 , we purchased 1,218 and 11,163 shares of FRBSF stock, respectively. No shares of FHLB stock or FRBSF stock were called during the three and nine months ended September 30, 2018 . The fair values of the FHLB and FRBSF stock are equal to their respective carrying amounts, are classified as restricted securities and are periodically evaluated for impairment based on our assessment of the ultimate recoverability of our investments in that stock. Any cash or stock dividends paid to us on such stock are reported as income. Investment Securities Available for Sale. Fair value measurement for our investment securities available for sale is based upon quoted prices, if available. If quoted prices are not available, fair values are measured using independent pricing models or other model-based valuation techniques such as the present value of future cash flows, adjusted for the security’s credit rating, prepayment assumptions and other factors such as credit loss assumptions. Level 1 investment securities include those traded on an active exchange, such as the New York Stock Exchange, and U.S. Treasury securities that are traded by dealers or brokers in active over-the-counter markets. Level 2 investment securities include mortgage-backed securities issued by government sponsored entities, municipal bonds and corporate debt securities. Securities classified as Level 3 include asset-backed securities in less liquid markets. Equity Investments Without Readily Determinable Fair Value . Equity investments without readily determinable fair value are accounted for under the measurement alternative method of accounting. These investments are measured at cost, less any impairment, plus or minus any changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. Any cash or stock dividends paid to us on such investments are reported as noninterest income. Impaired Loans . Loans measured for impairment are measured at an observable market price (if available), or the fair value of the loan’s collateral (if the loan is collateral dependent). The fair value of an impaired loan may be estimated using one of several methods, including collateral value, market value of similar debt, liquidation value and discounted cash flows. Those impaired loans not requiring a specific loan loss reserve represent loans for which the fair value of the expected repayments or collateral exceeds the recorded investments in such loans. When the fair value of the collateral is based on an observable market price or a current appraised value, we record the impaired loan at Level 2. When an appraised value is not available or we determine that the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we record the impaired loan at Level 3. Loans . The fair value for loans with variable interest rates less a credit discount is the carrying amount. The fair value of fixed rate loans is derived by calculating the present value of expected future cash flows discounted at the loan’s original interest rate by the various homogeneous categories of loans. All loans have been adjusted to reflect changes in credit risk and represent the exit price of the loans. Changes are not recorded directly as an adjustment to current earnings or comprehensive income, but rather as an adjustment component in determining the overall adequacy of the loan loss reserve. Other Real Estate Owned. OREO is reported at its net realizable value (fair value less estimated costs to sell) at the time any real estate collateral is acquired by the Bank in satisfaction of a loan. Subsequently, OREO is carried at the lower of carrying value or fair value less estimated costs to sell. Fair value is determined based upon independent market prices, appraised values of the collateral or management’s estimation of the value of the collateral. When the fair value of the collateral is based on an observable market price or a current appraised value, we record the foreclosed asset at Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we record the foreclosed asset at Level 3. Other Foreclosed Assets. Other foreclosed assets are reported at their net realizable value (fair value less estimated costs to sell) at the time any collateral other than real estate is acquired by the Bank in satisfaction of a loan. Subsequently, other foreclosed assets are carried at the lower of carrying value or fair value less estimated costs to sell. Fair value is determined based upon independent market prices, appraised values of the collateral or management’s estimation of the value of the collateral. When the fair value of the collateral is based on an observable market price or a current appraised value, we record the foreclosed asset at Level 2. When an appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value and there is no observable market price, we record the foreclosed asset at Level 3. Deposits. Deposits are carried at historical cost. The carrying amounts of deposits from savings and money market accounts are deemed to approximate fair value as they either have no stated maturities or short-term maturities. Certificates of deposit are estimated utilizing discounted cash flow techniques. The interest rates applied are rates currently being offered for similar certificates of deposit. Borrowings. The fair value of borrowings is the carrying amount for those borrowings that mature on a daily basis. The fair value of term borrowings is derived by calculating the discounted value of future cash flows expected to be paid out by the Company. We classify our borrowings in Level 2 of the fair value hierarchy. Junior Subordinated Debentures. The fair value of the junior subordinated debentures is based on quoted market prices of the underlying securities. These securities are variable rate in nature and repriced quarterly. We classify our junior subordinated debentures in Level 2 of the fair value hierarchy. Commitments to Extend Credit and Standby Letters of Credit. The fair value of commitments to extend credit and standby letters of credit are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. Interest Receivable and Interest Payable. The carrying amounts of our accrued interest receivable and accrued interest payable are deemed to approximate fair value.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables show the recorded amounts of assets and liabilities measured at fair value on a recurring basis at September 30, 2018 and December 31, 2017 : At September 30, 2018 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets at Fair Value: Debt securities available for sale U.S. Treasury securities $ 2,970 $ — $ 2,970 $ — Commercial mortgage backed securities issued by U.S. Agencies 2,472 — 2,472 — Residential mortgage backed securities issued by U.S. agencies 24,477 — 24,477 — Total debt securities available for sale at fair value $ 29,919 $ — $ 29,919 $ — At December 31, 2017 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets at Fair Value: Debt securities available for sale U.S. Treasury securities $ 2,971 $ — $ 2,971 $ — Residential mortgage backed securities issued by U.S. agencies 30,122 — 30,122 — Asset-backed security (1) 1,741 — — 1,741 Total debt securities available for sale 34,834 — 33,093 1,741 Equity securities Mutual funds (1) 4,904 4,904 — — Total debt and equity securities available for sale at fair value $ 39,738 $ 4,904 $ 33,093 $ 1,741 (1) These investments were sold during the nine months ended September 30, 2018. Refer to Note 4, Investments for further detail regarding these sales.
Changes in Level 3 Assets Measured at Fair Value on Recurring Basis	The changes in Level 3 assets measured at fair value on a recurring basis are summarized as follows for the nine months ended September 30, 2018 : Asset Backed Securities (Dollars in thousands) Balance of recurring Level 3 instruments at December 31, 2017 $ 1,741 Total gains or losses (realized/unrealized): Included in earnings-realized 53 Included in other comprehensive income 251 Sales (2,054 ) Settlements 9 Balance of recurring Level 3 instruments at September 30, 2018 $ —
Assets Measured at Fair Value on Nonrecurring Basis	Information regarding assets measured at fair value on a nonrecurring basis is set forth in the table below. At September 30, 2018 At December 31, 2017 (Dollars in thousands) Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets at Fair Value: Impaired loans $ 5,881 $ — $ — $ 5,881 $ 6,360 $ — $ — $ 6,360 Other foreclosed assets 15 — 15 — — — — — Other real estate owned 1,275 — 1,275 — — — — — Total $ 7,171 $ — $ 1,290 $ 5,881 $ 6,360 $ — $ — $ 6,360
Summary of Significant Unobservable Inputs and Valuation Techniques	For our fair value measurements classified in Level 3 of the fair value hierarchy as of September 30, 2018 , a summary of the significant unobservable inputs and valuation techniques is as follows: Fair Value Measurement as of September 30, 2018 Valuation Techniques (2) Unobservable Inputs (2) Range Weighted Average (Dollars in thousands) Assets Impaired loans 5,881 Third-Party Pricing Discounted cash flow N/A (1) N/A (1) $ 5,881 (1) As part of our process, we obtain appraisals for our various properties included within impaired loans which primarily rely upon market comparisons. These market comparisons support our assumption that the carrying value of the respective loans either requires or does not require additional impairment. (2) As of September 30, 2018 , there has been no change to our valuation techniques or the types of unobservable inputs used in the calculation of fair value from December 31, 2017.
Estimated Fair Values and Amounts of Financial Instruments	The table below provides estimated fair values and related carrying amounts of our financial instruments as of September 30, 2018 and December 31, 2017 , excluding financial assets and liabilities which are recorded at fair value on a recurring basis. Estimated Fair Value At September 30, 2018 At December 31, 2017 Carrying Value Total Level 1 Level 2 Level 3 Carrying Value Total Level 1 Level 2 Level 3 (Dollars in thousands) Financial assets: Cash and cash equivalents $ 176,073 $ 176,073 $ 176,073 $ — $ — $ 198,208 $ 198,208 198,208 — — Interest-bearing deposits with financial institutions 2,420 2,420 2,420 — — 2,920 2,920 2,920 — — Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock 8,823 8,823 8,823 — — 8,107 8,107 8,107 — — Loans, net 1,070,751 1,055,728 — — 1,055,728 1,053,201 1,046,171 — — 1,046,171 Accrued interest receivable 4,241 4,241 4,241 — — 3,872 3,872 3,872 — — Financial liabilities: Noninterest bearing deposits 336,434 336,434 336,434 — — 338,273 338,273 338,273 — — Interest-bearing deposits 780,661 778,751 — 778,751 — 801,120 800,169 — 800,169 — Borrowings 40,000 39,984 — 39,984 — 40,866 41,238 — 41,238 — Junior subordinated debentures 17,527 17,527 — 17,527 — 17,527 17,527 — 17,527 — Accrued interest payable 404 404 404 — — 397 397 397 — —

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2018
Investments [Abstract]
Major Components of Securities Available for Sale and Comparison of Amortized Cost, Estimated Fair Market Values, and Gross Unrealized Gains and Losses	The following table sets forth the major components of securities available for sale and compares the amortized costs and estimated fair market values of, and the gross unrealized gains and losses on, these securities at September 30, 2018 and December 31, 2017 : (Dollars in thousands) September 30, 2018 December 31, 2017 Amortized Cost Gross Unrealized Estimated Fair Value Amortized Cost Gross Unrealized Estimated Fair Value Gain Loss Gain Loss Securities Available for Sale U.S. Treasury securities $ 2,998 $ — $ (28 ) $ 2,970 $ 2,996 $ — $ (25 ) $ 2,971 Commercial mortgage backed securities issued by U.S. Agencies (1) 2,495 — (23 ) 2,472 — — — — Residential mortgage backed securities issued by U.S. Agencies (2) 26,058 1 (1,582 ) 24,477 30,894 5 (777 ) 30,122 Asset backed security (3) — — — — 1,992 — (251 ) 1,741 Mutual funds (4) — — — — 5,000 11 (107 ) 4,904 Total $ 31,551 $ 1 $ (1,633 ) $ 29,919 $ 40,882 $ 16 $ (1,160 ) $ 39,738 (1) Secured by first liens on commercial apartment building mortgages. (2) Secured by closed-end first liens on 1-4 family residential mortgages. (3) Comprised of a security that represented an interest in a pool of trust preferred securities issued by U.S.-based banks and insurance companies. This investment was sold during the nine months ended September 30, 2018. (4) Consisted primarily of mutual fund investments in closed-end first liens on 1-4 family residential mortgages. As a result of the adoption of ASU 2016-01 effective January 1, 2018, the change in fair value for all equity securities is required to be recorded within the income statement and would no longer be included in this table. However, this investment was sold during the nine months ended September 30, 2018 so the only impact from the adoption of ASU 2016-01 in 2018 relates to the adjustment to beginning retained earnings for the $97 thousand gross unrealized loss as of December 31, 2017.
Amortized Cost and Estimated Fair Values of Securities Available for Sale by Contractual Maturities and Historical Prepayments based on Prior Twelve Months of Principal Payments	The amortized cost and estimated fair values of securities available for sale at September 30, 2018 and December 31, 2017 are shown in the tables below by contractual maturities taking into consideration historical prepayments based on the prior twelve months of principal payments. Expected maturities will differ from contractual maturities and historical prepayments, particularly with respect to collateralized mortgage obligations, primarily because prepayment rates are affected by changes in conditions in the interest rate market and, therefore, future prepayment rates may differ from historical prepayment rates. At September 30, 2018 Maturing in (Dollars in thousands) One year or less Over one year through five years Over five years through ten years Over ten Years Total Securities available for sale, amortized cost $ 8,776 $ 14,359 $ 7,452 $ 964 $ 31,551 Securities available for sale, estimated fair value 8,387 13,529 7,057 946 29,919 Weighted average yield 1.42 % 1.54 % 1.97 % 2.97 % 1.65 % At December 31, 2017 Maturing in (Dollars in thousands) One year or less Over one year through five years Over five years through ten years Over ten Years Total Securities available for sale, amortized cost (1) $ 5,685 $ 23,772 $ 8,956 $ 2,469 $ 40,882 Securities available for sale, estimated fair value (1) 5,543 23,253 8,727 2,215 39,738 Weighted average yield (1) 1.49 % 1.60 % 1.63 % 3.86 % 1.73 % (1) Included within these balances are equity securities that consisted primarily of mutual fund investments in closed-end first liens on 1-4 family residential mortgages. As a result of the adoption of ASU 2016-01 effective January 1, 2018, the change in fair value for all equity securities is required to be recorded within the income statement and would no longer be included in this table. However, this investment was sold during the nine months ended September 30, 2018 so the only impact from the adoption of ASU 2016-01 in 2018 relates to the adjustment to beginning retained earnings for the $97 thousand gross unrealized loss as of December 31, 2017.
Gross Unrealized Losses and Fair Values of Investments	The tables below indicate, as of September 30, 2018 and December 31, 2017 , the gross unrealized losses and fair values of our investments, aggregated by investment category, and length of time that the individual securities have been in a continuous unrealized loss position. Securities with Unrealized Loss at September 30, 2018 Less than 12 months 12 months or more Total (Dollars in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities $ — $ — $ 2,970 $ (28 ) $ 2,970 $ (28 ) Commercial mortgage backed securities issued by U.S. Agencies 1,472 (23 ) — — 1,472 (23 ) Residential mortgage backed securities issued by U.S. Agencies 385 (3 ) 24,031 (1,579 ) 24,416 (1,582 ) Total $ 1,857 $ (26 ) $ 27,001 $ (1,607 ) $ 28,858 $ (1,633 ) Securities with Unrealized Loss at December 31, 2017 Less than 12 months 12 months or more Total (Dollars in thousands) Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss U.S. Treasury securities $ 2,971 $ (25 ) $ — $ — $ 2,971 $ (25 ) Residential mortgage backed securities issued by U.S. Agencies 1,400 (15 ) 28,241 (762 ) 29,641 (777 ) Asset-backed security — — 1,740 (251 ) 1,740 (251 ) Mutual funds (1) 1,485 (15 ) 2,658 (92 ) 4,143 (107 ) Total $ 5,856 $ (55 ) $ 32,639 $ (1,105 ) $ 38,495 $ (1,160 ) (1) Consisted primarily of mutual fund investments in closed-end first liens on 1-4 family residential mortgages. As a result of the adoption of ASU 2016-01 effective January 1, 2018, the change in fair value for all equity securities is required to be recorded within the income statement and would no longer be included in this table. However, this investment was sold during the nine months ended September 30, 2018 so the only impact from the adoption of ASU 2016-01 in 2018 relates to the adjustment to beginning retained earnings for the $97 thousand gross unrealized loss as of December 31, 2017.
Schedule of Other Investments	As of September 30, 2018 and December 31, 2017 , our equity investments without readily determinable fair value were as follows: September 30, 2018 December 31, 2017 (Dollars in thousands) Equity investments without readily determinable fair value $ 1,069 $ 893

Loans and Allowance for Loan _2

Loans and Allowance for Loan and Lease Losses (Tables)	9 Months Ended
	Sep. 30, 2018
Receivables [Abstract]
Composition of Loan Portfolio	The loan portfolio consisted of the following at: September 30, 2018 December 31, 2017 (Dollars in thousands) Amount Percent Amount Percent Commercial loans $ 414,995 38.4 % $ 394,493 37.1 % Commercial real estate loans – owner occupied 226,861 21.0 % 214,365 20.1 % Commercial real estate loans – all other 232,316 21.5 % 228,090 21.4 % Residential mortgage loans – multi-family 88,563 8.2 % 114,302 10.7 % Residential mortgage loans – single family 21,634 2.0 % 24,848 2.3 % Construction and land development loans 36,961 3.4 % 34,614 3.3 % Consumer loans 59,585 5.5 % 53,918 5.1 % Gross loans 1,080,915 100.0 % 1,064,630 100.0 % Deferred fee (income) costs, net 3,299 2,767 Allowance for loan and lease losses (13,463 ) (14,196 ) Loans, net $ 1,070,751 $ 1,053,201
Allowance for Loan Losses and Loan Balances	Set forth below is a summary of the activity in the ALLL, by portfolio type, during the three and nine months ended September 30, 2018 and 2017: (Dollars in thousands) Commercial Real Estate Construction and Land Development Consumer and Single Family Mortgages Unallocated Total ALLL in the three months ended September 30, 2018: Balance at beginning of period $ 7,493 $ 2,953 $ 327 $ 1,578 $ 1,018 $ 13,369 Charge offs (416 ) — — (3 ) — (419 ) Recoveries 448 60 — 5 — 513 Provision (229 ) 664 81 (21 ) (495 ) — Balance at end of period $ 7,296 $ 3,677 $ 408 $ 1,559 $ 523 $ 13,463 ALLL in the nine months ended September 30, 2018: Balance at beginning of period $ 9,155 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,196 Charge offs (1,840 ) — — (3 ) — (1,843 ) Recoveries 1,009 60 — 41 — 1,110 Provision (1,028 ) 711 (242 ) 478 81 — Balance at end of period $ 7,296 $ 3,677 $ 408 $ 1,559 $ 523 $ 13,463 ALLL in the three months ended September 30, 2017: Balance at beginning of period $ 10,113 $ 4,657 $ 157 $ 1,123 $ 1,128 $ 17,178 Charge offs (2,228 ) — — (47 ) — (2,275 ) Recoveries 140 — — 5 — 145 Provision 1,140 (615 ) 189 (89 ) (625 ) — Balance at end of period $ 9,165 $ 4,042 $ 346 $ 992 $ 503 $ 15,048 ALLL in the nine months ended September 30, 2017: Balance at beginning of period $ 11,276 $ 4,226 $ 343 $ 642 $ 314 $ 16,801 Charge offs (2,694 ) (432 ) — (161 ) — (3,287 ) Recoveries 1,334 — 27 173 — 1,534 Provision (751 ) 248 (24 ) 338 189 — Balance at end of period $ 9,165 $ 4,042 $ 346 $ 992 $ 503 $ 15,048 Set forth below is information regarding loan balances and the related ALLL, by portfolio type, as of September 30, 2018 and December 31, 2017 . (Dollars in thousands) Commercial Real Estate Construction and Land Consumer Unallocated Total ALLL balance at September 30, 2018 related to: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 7,296 3,677 408 1,559 523 13,463 Total $ 7,296 $ 3,677 $ 408 $ 1,559 $ 523 $ 13,463 Loans balance at September 30, 2018 related to: Loans individually evaluated for impairment $ 4,985 $ 850 $ — $ 46 $ — $ 5,881 Loans collectively evaluated for impairment 410,010 546,890 36,961 81,173 — 1,075,034 Total $ 414,995 $ 547,740 $ 36,961 $ 81,219 $ — $ 1,080,915 ALLL balance at December 31, 2017 related to: Loans individually evaluated for impairment $ 7 $ — $ — $ — $ — $ 7 Loans collectively evaluated for impairment 9,148 2,906 650 1,043 442 14,189 Total $ 9,155 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,196 Loans balance at December 31, 2017 related to: Loans individually evaluated for impairment $ 3,672 $ 2,461 $ — $ 227 $ — $ 6,360 Loans collectively evaluated for impairment 390,821 554,296 34,614 78,539 — 1,058,270 Total $ 394,493 $ 556,757 $ 34,614 $ 78,766 $ — $ 1,064,630
Summary of Delinquency Status of Loans by Portfolio Type	The following table provides a summary of the delinquency status of loans by portfolio type at September 30, 2018 and December 31, 2017 : (Dollars in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days and Greater Total Past Due Current Total Loans Outstanding Loans >90 Days and Accruing At September 30, 2018 Commercial loans $ 813 $ 5,544 $ 2,669 $ 9,026 $ 405,969 $ 414,995 $ — Commercial real estate loans – owner-occupied 3,870 850 — 4,720 222,141 226,861 — Commercial real estate loans – all other — — — — 232,316 232,316 — Residential mortgage loans – multi-family — — — — 88,563 88,563 — Residential mortgage loans – single family — — — — 21,634 21,634 — Construction and land development loans — — — — 36,961 36,961 — Consumer loans — — — — 59,585 59,585 — Total $ 4,683 $ 6,394 $ 2,669 $ 13,746 $ 1,067,169 $ 1,080,915 $ — At December 31, 2017 Commercial loans $ 1,387 $ — $ 2,125 $ 3,512 $ 390,981 $ 394,493 $ — Commercial real estate loans – owner-occupied — — — — 214,365 214,365 — Commercial real estate loans – all other — 936 — 936 227,154 228,090 — Residential mortgage loans – multi-family — — — — 114,302 114,302 — Residential mortgage loans – single family — — — — 24,848 24,848 — Construction and land development loans — — — — 34,614 34,614 — Consumer loans — — — — 53,918 53,918 — Total $ 1,387 $ 936 $ 2,125 $ 4,448 $ 1,060,182 $ 1,064,630 $ —
Loans on Nonaccrual Status by Portfolio Type	The following table provides information with respect to loans on nonaccrual status, by portfolio type, as of September 30, 2018 and December 31, 2017 : September 30, 2018 December 31, 2017 (Dollars in thousands) Nonaccrual loans: Commercial loans $ 4,985 $ 3,222 Commercial real estate loans – owner occupied 850 893 Commercial real estate loans – all other — 1,568 Residential mortgage loans – single family — 171 Consumer 46 56 Total (1) $ 5,881 $ 5,910 (1) Nonaccrual loans may include loans that are currently considered performing loans.
Summary of Loans by Portfolio Type and Internal Credit Quality Ratings	The following table provides a summary of loans by portfolio type and our internal asset quality ratings as of September 30, 2018 and December 31, 2017 : September 30, 2018 December 31, 2017 (Dollars in thousands) Pass: Commercial loans $ 394,807 $ 375,024 Commercial real estate loans – owner occupied 217,085 207,094 Commercial real estate loans – all other 221,816 226,522 Residential mortgage loans – multi family 88,563 114,302 Residential mortgage loans – single family 21,634 24,677 Construction and land development loans 36,961 34,614 Consumer loans 59,539 53,862 Total pass loans $ 1,040,405 $ 1,036,095 Special Mention: Commercial loans $ 12,692 $ 11,009 Commercial real estate loans – owner occupied 5,056 6,378 Commercial real estate loans – all other 10,500 — Total special mention loans $ 28,248 $ 17,387 Substandard: Commercial loans $ 7,496 $ 8,094 Commercial real estate loans – owner occupied 4,720 893 Commercial real estate loans – all other — 1,568 Residential mortgage loans – single family — 171 Consumer loans 46 56 Total substandard loans $ 12,262 $ 10,782 Doubtful: Commercial loans $ — $ 366 Total doubtful loans $ — $ 366 Total Loans: $ 1,080,915 $ 1,064,630
Schedule of Impaired Loans	Average balances and interest income recognized on impaired loans, by portfolio type, for the three and nine months ended September 30, 2018 and 2017 were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Average Balance Interest Income Recognized Average Balance Interest Income Recognized Average Balance Interest Income Recognized Average Balance Interest Income Recognized (Dollars in thousands) No allowance recorded: Commercial loans $ 4,700 $ 39 $ 8,547 $ 19 $ 4,256 $ 101 $ 13,628 $ 89 Commercial real estate loans – owner occupied 856 — 1,164 — 871 — 1,653 — Commercial real estate loans – all other — — 1,613 — 762 — 1,650 — Residential mortgage loans – single family — — 180 — 43 — 196 — Consumer loans 48 — 18 — 51 — 66 1 Total 5,604 39 11,522 19 5,983 101 17,193 90 With allowance recorded: Commercial loans — — 5,314 8 209 — 3,865 24 Total — — 5,314 8 209 — 3,865 24 Total Commercial loans 4,700 39 13,861 27 4,465 101 17,493 113 Commercial real estate loans – owner occupied 856 — 1,164 — 871 — 1,653 — Commercial real estate loans – all other — — 1,613 — 762 — 1,650 — Residential mortgage loans – single family — — 180 — 43 — 196 — Consumer loans 48 — 18 — 51 — 66 1 Total $ 5,604 $ 39 $ 16,836 $ 27 $ 6,192 $ 101 $ 21,058 $ 114 The following table sets forth information regarding impaired loans, at September 30, 2018 and December 31, 2017 : September 30, 2018 December 31, 2017 (Dollars in thousands) Impaired loans: Nonaccruing loans $ 5,881 $ 5,101 Nonaccruing restructured loans (1) — 809 Accruing restructured loans (1)(2) — 450 Total impaired loans $ 5,881 $ 6,360 Impaired loans less than 90 days delinquent and included in total impaired loans $ 3,212 $ 3,994 (1) As of September 30, 2018, we had no restructured loans. (2) See “ Troubled Debt Restructurings ” below for a description of accruing restructured loans at September 30, 2018 and December 31, 2017. The table below contains additional information with respect to impaired loans, by portfolio type, as of September 30, 2018 and December 31, 2017 : September 30, 2018 December 31, 2017 Recorded Investment Unpaid Principal Balance Related Allowance (1) Recorded Investment Unpaid Principal Balance Related Allowance (1) (Dollars in thousands) No allowance recorded: Commercial loans $ 4,985 $ 5,821 $ — $ 3,222 $ 5,910 $ — Commercial real estate loans – owner occupied 850 933 — 893 945 — Commercial real estate loans – all other — — — 1,568 1,965 — Residential mortgage loans – single family — — — 171 185 — Consumer loans 46 67 — 56 73 — Total 5,881 6,821 — 5,910 9,078 — With allowance recorded: Commercial loans $ — $ — $ — $ 450 $ 450 $ 7 Total — — — 450 450 7 Total Commercial loans $ 4,985 $ 5,821 $ — $ 3,672 $ 6,360 $ 7 Commercial real estate loans – owner occupied 850 933 — 893 945 — Commercial real estate loans – all other — — — 1,568 1,965 — Residential mortgage loans – single family — — — 171 185 — Consumer loans 46 67 — 56 73 — Total 5,881 6,821 — 6,360 9,528 7 (1) When the discounted cash flows, collateral value or market price equals or exceeds the recorded investment in the loan, then specific reserves are not required to be set aside for the loan within the ALLL. This typically occurs when the impaired loans have been partially charged-off and/or there have been interest payments received and applied to the balance of the principal outstanding.
Troubled Debt Restructurings	The following table presents loans restructured as TDRs during the three and nine months ended September 30, 2018 and 2017 : Three Months Ended September 30, 2018 September 30, 2017 (Dollars in thousands) Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Performing Commercial loans — $ — $ — — $ — $ — — — — — — — Nonperforming Commercial loans — — — — — — — — — — — — Total Troubled Debt Restructurings (1) — $ — $ — — $ — $ — Nine Months Ended September 30, 2018 September 30, 2017 (Dollars in thousands) Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Number of loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Performing Commercial loans — $ — $ — 1 $ 489 $ 489 — — — 1 489 489 Nonperforming Commercial loans — — — 2 1,739 1,101 — — — 2 1,739 1,101 Total Troubled Debt Restructurings (1) — $ — $ — 3 $ 2,228 $ 1,590 (1) No outstanding loans were restructured during the three and nine months ended September 30, 2018. During the three and nine months ended September 30, 2018 and 2017 , TDRs that were modified within the preceding 12-month period which subsequently defaulted were as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Number of loans Recorded Investment Number of loans Recorded Investment Number of loans Recorded Investment Number of loans Recorded Investment (Dollars in thousands) Commercial loans — $ — — $ — — $ — — $ — Commercial real estate - owner occupied — $ — — $ — — $ — — $ — Total (1) — $ — — $ — — $ — — $ — (1) During the three and nine months ended September 30, 2018 and 2017, there were no TDRs that were modified within the preceding 12-month period which subsequently defaulted.

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Schedule of Components of Deferred Tax Asset	The components of our net deferred tax asset are as follows at: (Dollars in thousands) September 30, December 31, 2018 2017 Deferred tax asset: Allowance for loan and lease losses $ 3,980 $ 4,207 Other than temporary impairment on securities 56 56 Deferred compensation 654 693 Litigation reserve 131 131 Other accrued expenses 878 927 Charitable contributions 241 241 Reserve for unfunded commitments 103 103 Tax credits 60 60 Net operating loss carry forward 5,215 9,754 Stock based compensation 535 363 Depreciation and amortization — — Unrealized losses on securities and deferred compensation 483 338 Total deferred tax assets 12,336 16,873 Deferred tax liabilities: Depreciation and amortization (133 ) (133 ) Other (976 ) (803 ) Total deferred tax liabilities (1,109 ) (936 ) Valuation allowance — (15,937 ) Total net deferred tax asset $ 11,227 $ —

Stock-Based Employee Compensa_2

Stock-Based Employee Compensation Plans (Tables)	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted Average Assumptions used to Determine Fair Values of Options Granted	The table below summarizes the weighted average assumptions used to determine the fair values of the options granted during the following periods: Three Months Ended September 30, Nine Months Ended September 30, Assumptions with respect to: 2018 2017 2018 2017 Expected volatility — % — % 30 % 33 % Risk-free interest rate — % — % 2.69 % 1.95 % Expected dividends — % — % — % — % Expected term (years) 0.0 0.0 5.8 5.7 Weighted average fair value of options granted during period $ — $ — $ 2.81 $ 2.81
Stock Option Activity under Plans	The following table summarizes the stock option activity under the Company’s equity incentive plans during the nine months ended September 30, 2018 and 2017 , respectively. Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share 2018 2017 Outstanding – January 1, 792,577 $ 6.41 1,066,914 $ 6.35 Granted 154,011 8.20 3,000 8.05 Exercised (75,108 ) 4.95 (172,584 ) 5.77 Forfeited/Canceled (7,150 ) 6.47 (68,176 ) 7.06 Outstanding – September 30, 864,330 6.86 829,154 6.42 Options Exercisable – September 30, 588,233 $ 6.49 570,915 $ 6.19 Options Vested – September 30, 588,233 $ 6.49 570,915 $ 6.19
Additional Information Regarding Vested and Unvested Options Outstanding	The following table provides additional information regarding the vested and unvested options that were outstanding at September 30, 2018 . Options Outstanding as of September 30, 2018 Options Exercisable as of September 30, 2018 (1) Exercise Price Vested Unvested Weighted Average Exercise Price Per Share Weighted Average Remaining Contractual Life (Years) Shares Weighted Average Exercise Price Per Share $2.97 – $3.99 18,003 — $ 3.48 2.66 18,003 $ 3.48 $4.00 – $4.99 16,000 — 4.34 2.51 16,000 4.34 $5.00– $5.99 15,000 — 5.30 4.68 15,000 5.30 $6.00– $6.99 414,584 81,903 6.61 5.71 414,584 6.57 $7.00-$8.90 124,646 194,194 7.63 8.14 124,646 7.09 588,233 276,097 $ 6.86 6.47 588,233 $ 6.49 (1) The weighted average remaining contractual life of the options that were exercisable as of September 30, 2018 was 5.53 years.
Summary of Status of Unvested Options and Changes in Number of Shares Subject to and in Weighted Average Grant Date Fair Values of Unvested Options	A summary of the status of the unvested options outstanding as of September 30, 2018 and 2017 , and changes in the weighted average grant date fair values of the unvested options during the nine months ended September 30, 2018 and 2017 , are set forth in the following table. For the nine months ended September 30, 2018 2017 Number of Shares Subject to Options Weighted Average Grant Date Fair Value Per Share Number of Weighted Unvested at the beginning of the period 255,348 $ 2.80 461,944 $ 2.79 Granted 154,011 2.81 3,000 2.81 Vested (126,112 ) 2.84 (141,329 ) 2.83 Forfeited/Canceled (7,150 ) 2.66 (65,376 ) 2.67 Unvested at the end of the period 276,097 2.79 258,239 2.80
Schedule of Restricted Stock Activity	The following table summarizes the activity related to restricted stock granted, vested and forfeited under our equity incentive plans during the nine months ended September 30, 2018 and 2017 . For the nine months ended September 30, 2018 2017 Number of Shares Average Grant Date Fair Value Per Share Number of Shares Average Grant Date Fair Value Per Share Outstanding at the beginning of the period 103,508 $ 7.33 151,298 $ 6.84 Granted 82,217 8.33 29,907 7.69 Vested (62,564 ) 7.26 (69,107 ) 6.81 Forfeited (4,690 ) 7.55 (18,509 ) 6.82 Outstanding at the end of the period 118,471 $ 8.06 93,589 $ 7.14
Compensation Expense of Non-Vested Stock Options Outstanding	We expect that the compensation expense that will be recognized during the periods presented below in respect of stock options and restricted stock outstanding at September 30, 2018 , will be as follows: Estimated Stock Based Compensation Expense Stock Options Estimated Stock Based Compensation Expense Restricted Stock Estimated Stock Based Compensation Expense Total (Dollars in thousands) For the years ending December 31, Remainder of 2018 $ 111 $ 125 $ 236 2019 193 238 431 2020 153 188 341 2021 45 81 126 2022 and beyond 22 60 82 $ 524 $ 692 $ 1,216

Earnings Per Share ("EPS") (Tab

Earnings Per Share ("EPS") (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The following table shows how we computed basic and diluted EPS for the three and nine months ended September 30, 2018 and 2017 . (In thousands, except per share data) For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Basic EPS: Net income $ 3,900 $ 3,756 $ 22,976 $ 8,037 Less dividends on preferred stock — — — — Less dividends on common stock — — — — Less dividends on unvested shares — — — — Net income allocable to common shareholders $ 3,900 $ 3,756 $ 22,976 $ 8,037 Less earnings allocated to participating securities 64 16 203 39 Earnings allocated to common shareholders $ 3,836 $ 3,740 $ 22,773 $ 7,998 Weighted average common shares outstanding 22,996 23,093 23,121 23,060 Basic earnings per common share $ 0.17 $ 0.16 $ 0.98 $ 0.35 Diluted EPS: Earnings allocated to common shareholders $ 3,900 $ 3,756 $ 22,976 $ 8,037 Weighted average common shares outstanding 22,996 23,093 23,121 23,060 Add dilutive effects of restricted stock grants 115 100 115 112 Add dilutive effects for assumed conversion of Series A preferred stock 271 — 91 — Add dilutive effect for stock options 216 138 208 117 Weighted average diluted common shares outstanding 23,598 23,331 23,535 23,290 Diluted earnings per common share $ 0.17 $ 0.16 $ 0.98 $ 0.35 (1) The basic and diluted earnings per share amounts for the three and nine months ended September 30, 2018 and 2017 are the same under both the Treasury Stock Method and the Two-Class Method as prescribed in FASB ASC 260-10, Earnings Per Share .
Antidilutive Securities Excluded from Earnings Per Share	The weighted average shares that have an antidilutive effect in the calculation of diluted net income per share and have been excluded from the computations above were as follows: For the Three Months Ended September 30, For the Nine Months Ended September 30, 2018 2017 2018 2017 Stock options (1) 140,985 129,431 128,711 357,859 (1) Represents stock options that were excluded from the computation of diluted earnings per common share for the three and nine months ended September 30, 2018 and 2017 as a result of the shares being “out-of-the-money.”

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss), net	Accumulated other comprehensive income (loss), net as of September 30, 2018 and December 31, 2017 was as follows: Unrealized Gain (Loss) on Securities Available-for-Sale, net of tax Accumulated Other Comprehensive Income (Loss), Net (Dollars in thousands) Ending balance as of December 31, 2016 $ (1,842 ) $ (1,842 ) Other comprehensive income before reclassifications (1) 695 695 Amounts reclassified from accumulated other comprehensive income, net of tax 4 4 Other comprehensive income (1) 699 699 Ending balance as of December 31, 2017 $ (1,143 ) $ (1,143 ) Other comprehensive loss before reclassifications, net of tax of $44 thousand (493 ) (493 ) Amounts reclassified from accumulated other comprehensive loss (2) 49 49 Other comprehensive loss, net of tax of $44 thousand (444 ) (444 ) Ending balance as of September 30, 2018 $ (1,587 ) $ (1,587 ) (1) No tax impact as a result of the full valuation allowance recorded against our deferred tax asset at December 31, 2017. (2) This balance consists of the $48 thousand net gain on sale of available for sale debt securities included in our consolidated statement of operations offset by $97 thousand included in our consolidated statement of shareholders' equity as an adjustment to our beginning retained earnings.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Borrowings and Contractual Obligations	At September 30, 2018 and December 31, 2017 , our borrowings and contractual obligations consisted of the following: (Dollars in thousands) September 30, 2018 December 31, 2017 FHLB advances—short-term $ 40,000 $ 40,000 Other borrowings—short-term (1) — 866 Total borrowings—short-term 40,000 40,866 FHLB advances—long-term — — Total $ 40,000 $ 40,866 (1) Borrowings had an interest rate of 15% as of December 31, 2017. This represented the portion of a participated loan that was required under GAAP to be recorded as other borrowings as of December 31, 2017. The participated portion of this loan was repurchased during the first quarter of 2018 and is no longer required to be recorded in other borrowings.
Schedule of FHLB Borrowings	The table below sets forth the amounts of, the interest rates we pay on, and the maturity dates of these FHLB borrowings. These borrowings had a weighted-average annualized interest rate of 2.20% for the nine months ended September 30, 2018 . Principal Amounts Interest Rate Maturity Dates (Dollars in thousands) 10,000 2.34 % November 28, 2018 10,000 1.77 % December 3, 2018 10,000 2.36 % December 26, 2018 10,000 2.31 % January 15, 2019

Business Segment Information (T

Business Segment Information (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Net Interest Income and Noninterest Income	The following table sets forth information regarding the net interest income and noninterest income for our commercial banking segment for the three and nine months ended September 30, 2018 and 2017 . (Dollars in thousands) Commercial Other (1) Total Net interest income for the three months ended September 30, 2018 $ 11,876 $ (187 ) $ 11,689 2017 $ 11,038 $ 967 $ 12,005 Noninterest income for the three months ended September 30, 2018 $ 1,109 $ 6 $ 1,115 2017 $ 959 $ 5 $ 964 Net interest income for the nine months ended September 30, 2018 $ 35,325 $ 996 $ 36,321 2017 $ 31,564 $ 908 $ 32,472 Noninterest income for the nine months ended September 30, 2018 $ 3,288 $ 18 $ 3,306 2017 $ 2,944 $ 420 $ 3,364 Segment Assets at: September 30, 2018 $ 1,319,358 $ 640 $ 1,319,998 December 31, 2017 $ 1,320,454 $ 2,150 $ 1,322,604 (1) Represents net interest income and noninterest income for PMAR and PMBC.

Regulatory Capital (Tables)

Regulatory Capital (Tables)	9 Months Ended
	Sep. 30, 2018
Regulatory Capital Requirements [Abstract]
Actual Amount and Capital Ratios of Company and Bank	The following table sets forth the capital and capital ratios of the Bank (on a stand-alone basis) at September 30, 2018 , as compared to the respective regulatory requirements applicable to them. Applicable Federal Regulatory Requirement For Capital Adequacy Purposes To be Categorized As Well-Capitalized Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) Total Capital to Risk Weighted Assets 155,679 12.8 % 104,995 At least 8.625 $ 121,734 At least 10.0 Common Equity Tier 1 Capital to Risk Weighted Assets 141,866 11.7 % 62,389 At least 5.125 $ 79,127 At least 6.5 Tier 1 Capital to Risk Weighted Assets 141,866 11.7 % 80,649 At least 6.625 $ 97,387 At least 8.0 Tier 1 Capital to Average Assets 141,866 10.7 % 53,069 At least 4.0 $ 66,337 At least 5.0

Significant Accounting Polici_3

Significant Accounting Policies (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment from adoption of new accounting pronouncements		$ (97)
Retained earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment from adoption of new accounting pronouncements	$ (97)	$ (97)

Fair Value Measurements - Addit

Fair Value Measurements - Additional Disclosures (Details) - shares	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Number of FHLB stock purchased	0	0
Number of FRBSF stock purchased	1,218	11,163
Number of FHLB stock sold	0	0
Number of FRBSF stock sold	0	0

Fair Value Measurements - Asset

Fair Value Measurements - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	$ 29,919
Securities available for sale, at fair value	29,919	$ 39,738
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	29,919	34,834
Securities available for sale, at fair value		39,738
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	0	0
Securities available for sale, at fair value		4,904
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	29,919	33,093
Securities available for sale, at fair value		33,093
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	0	1,741
Securities available for sale, at fair value		1,741
U.S. Treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	2,970
Securities available for sale, at fair value		2,971
U.S. Treasury securities | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	2,970	2,971
U.S. Treasury securities | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	0	0
U.S. Treasury securities | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	2,970	2,971
U.S. Treasury securities | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	0	0
Commercial mortgage backed securities issued by U.S. Agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	2,472
Securities available for sale, at fair value		0
Commercial mortgage backed securities issued by U.S. Agencies | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	2,472
Commercial mortgage backed securities issued by U.S. Agencies | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	0
Commercial mortgage backed securities issued by U.S. Agencies | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	2,472
Commercial mortgage backed securities issued by U.S. Agencies | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	0
Residential mortgage backed securities issued by U.S. agencies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	24,477
Securities available for sale, at fair value		30,122
Residential mortgage backed securities issued by U.S. agencies | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	24,477	30,122
Residential mortgage backed securities issued by U.S. agencies | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	0	0
Residential mortgage backed securities issued by U.S. agencies | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	24,477	30,122
Residential mortgage backed securities issued by U.S. agencies | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	0	0
Asset-backed security
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	0
Securities available for sale, at fair value		1,741
Asset-backed security | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale		1,741
Asset-backed security | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale		0
Asset-backed security | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale		0
Asset-backed security | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale		1,741
Mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total debt securities available for sale	$ 0
Securities available for sale, at fair value		4,904
Mutual funds | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value		4,904
Mutual funds | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value		4,904
Mutual funds | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value		0
Mutual funds | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value		$ 0

Fair Value Measurements - Chang

Fair Value Measurements - Changes in Level 3 Assets Measured at Fair Value on Recurring Basis (Details) - Asset Backed Securities $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Changes in Level 3 assets measured at fair value on a recurring basis
Balance of recurring Level 3 instruments at December 31, 2017	$ 1,741
Total gains or losses (realized/unrealized):
Included in earnings-realized	53
Included in other comprehensive income	251
Sales	(2,054)
Settlements	9
Balance of recurring Level 3 instruments at September 30, 2018	$ 0

Fair Value Measurements - Ass_2

Fair Value Measurements - Assets Measured at Fair Value on Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	$ 7,171	$ 6,360
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	5,881	6,360
Other foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	15	0
Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	1,275	0
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	0	0
Level 1 | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	0	0
Level 1 | Other foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	0	0
Level 1 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	1,290	0
Level 2 | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	0	0
Level 2 | Other foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	15	0
Level 2 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	1,275	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	5,881	6,360
Level 3 | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	5,881	6,360
Level 3 | Other foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	0	0
Level 3 | Other real estate owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	$ 0	$ 0

Fair Value Measurements - Valua

Fair Value Measurements - Valuation Techniques for Level 3 Financial Instruments (Details) - Level 3 $ in Thousands	Sep. 30, 2018USD ($)
Assets [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure	$ 5,881
Impaired loans | Third-Party Pricing
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure	$ 5,881

Fair Value Measurements - Fair

Fair Value Measurements - Fair Values and Related Carrying Amounts of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Carrying Value
Financial assets:
Cash and cash equivalents	$ 176,073	$ 198,208
Interest-bearing deposits with financial institutions	2,420	2,920
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	8,823	8,107
Loans, net	1,070,751	1,053,201
Accrued interest receivable	4,241	3,872
Financial liabilities:
Noninterest bearing deposits	336,434	338,273
Interest-bearing deposits	780,661	801,120
Borrowings	40,000	40,866
Junior subordinated debentures	17,527	17,527
Accrued interest payable	404	397
Total
Financial assets:
Cash and cash equivalents	176,073	198,208
Interest-bearing deposits with financial institutions	2,420	2,920
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	8,823	8,107
Loans, net	1,055,728	1,046,171
Accrued interest receivable	4,241	3,872
Financial liabilities:
Noninterest bearing deposits	336,434	338,273
Interest-bearing deposits	778,751	800,169
Borrowings	39,984	41,238
Junior subordinated debentures	17,527	17,527
Accrued interest payable	404	397
Level 1
Financial assets:
Cash and cash equivalents	176,073	198,208
Interest-bearing deposits with financial institutions	2,420	2,920
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	8,823	8,107
Loans, net	0	0
Accrued interest receivable	4,241	3,872
Financial liabilities:
Noninterest bearing deposits	336,434	338,273
Interest-bearing deposits	0	0
Borrowings	0	0
Junior subordinated debentures	0	0
Accrued interest payable	404	397
Level 2
Financial assets:
Cash and cash equivalents	0	0
Interest-bearing deposits with financial institutions	0	0
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Financial liabilities:
Noninterest bearing deposits	0	0
Interest-bearing deposits	778,751	800,169
Borrowings	39,984	41,238
Junior subordinated debentures	17,527	17,527
Accrued interest payable	0	0
Level 3
Financial assets:
Cash and cash equivalents	0	0
Interest-bearing deposits with financial institutions	0	0
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	0	0
Loans, net	1,055,728	1,046,171
Accrued interest receivable	0	0
Financial liabilities:
Noninterest bearing deposits	0	0
Interest-bearing deposits	0	0
Borrowings	0	0
Junior subordinated debentures	0	0
Accrued interest payable	$ 0	$ 0

Investments - Major Components

Investments - Major Components of Securities Available for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Available-for-sale Debt Securities [Abstract]
Amortized Cost	$ 31,551
Gross Unrealized Gain	1
Gross Unrealized Loss	(1,633)
Estimated Fair Value	29,919
Amortized Cost			$ 40,882
Gross Unrealized Gain			16
Gross Unrealized Loss			(1,160)
Estimated Fair Value	29,919		39,738
Cumulative adjustment from adoption of new accounting pronouncements			(97)
Retained earnings
Available-for-sale Debt Securities [Abstract]
Cumulative adjustment from adoption of new accounting pronouncements		$ (97)	(97)
ASU 2016-01 | Retained earnings
Available-for-sale Debt Securities [Abstract]
Cumulative adjustment from adoption of new accounting pronouncements			(97)
U.S. Treasury securities
Available-for-sale Debt Securities [Abstract]
Amortized Cost	2,998
Gross Unrealized Gain	0
Gross Unrealized Loss	(28)
Estimated Fair Value	2,970
Amortized Cost			2,996
Gross Unrealized Gain			0
Gross Unrealized Loss			(25)
Estimated Fair Value			2,971
Commercial mortgage backed securities issued by U.S. Agencies
Available-for-sale Debt Securities [Abstract]
Amortized Cost	2,495
Gross Unrealized Gain	0
Gross Unrealized Loss	(23)
Estimated Fair Value	2,472
Amortized Cost			0
Gross Unrealized Gain			0
Gross Unrealized Loss			0
Estimated Fair Value			0
Residential mortgage backed securities issued by U.S. agencies
Available-for-sale Debt Securities [Abstract]
Amortized Cost	26,058
Gross Unrealized Gain	1
Gross Unrealized Loss	(1,582)
Estimated Fair Value	24,477
Amortized Cost			30,894
Gross Unrealized Gain			5
Gross Unrealized Loss			(777)
Estimated Fair Value			30,122
Asset-backed security
Available-for-sale Debt Securities [Abstract]
Amortized Cost	0
Gross Unrealized Gain	0
Gross Unrealized Loss	0
Estimated Fair Value	0
Amortized Cost			1,992
Gross Unrealized Gain			0
Gross Unrealized Loss			(251)
Estimated Fair Value			1,741
Mutual funds
Available-for-sale Debt Securities [Abstract]
Amortized Cost	0
Gross Unrealized Gain	0
Gross Unrealized Loss	0
Estimated Fair Value	$ 0
Amortized Cost			5,000
Gross Unrealized Gain			11
Gross Unrealized Loss			(107)
Estimated Fair Value			$ 4,904

Investments - Additional Inform

Investments - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)Investment	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)Investment	Sep. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Investments [Abstract]
Aggregate fair market value of securities pledged as collateral	$ 17,600,000		$ 17,600,000		$ 22,700,000
Payments acquire debt securities	2,500,000	$ 0	0	$ 1,000,000
Proceeds from sale of debt securities available for sale	0	0	2,100,000	0
Net gain on sale of securities available for sale			53,000
Proceeds on the sale of equity security			4,800,000
Loss on sale of equity security			(5,000)
Other than temporary impairment on securities available for sale	$ 0	0	$ 0	0
Number of investments in limited partnerships | Investment	2		2
Payments to acquire investments	$ 34,000	$ 0	$ 175,000	$ 133,000

Investments - Amortized Cost an

Investments - Amortized Cost and Estimated Fair Value by Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Securities available for sale, amortized cost
One year or less	$ 8,776		$ 5,685
Over one year through five years	14,359		23,772
Over five years through ten years	7,452		8,956
Over ten Years	964		2,469
Total	31,551		40,882
Securities available for sale, estimated fair value
One year or less	8,387		5,543
Over one year through five years	13,529		23,253
Over five years through ten years	7,057		8,727
Over ten Years	946		2,215
Total	$ 29,919		$ 39,738
Weighted average yield
One year or less	1.42%		1.49%
Over one year through five years	1.54%		1.60%
Over five years through ten years	1.97%		1.63%
Over ten Years	2.97%		3.86%
Total	1.65%		1.73%
Investment [Line Items]
Cumulative adjustment from adoption of new accounting pronouncements			$ (97)
Retained earnings
Investment [Line Items]
Cumulative adjustment from adoption of new accounting pronouncements		$ (97)	(97)
Retained earnings | ASU 2016-01
Investment [Line Items]
Cumulative adjustment from adoption of new accounting pronouncements			$ (97)

Investments - Securities in Con

Investments - Securities in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	$ 1,857
Less than 12 months, Unrealized Loss	(26)
12 months or more, Fair Value	27,001
12 months or more, Unrealized Loss	(1,607)
Total, Fair Value	28,858
Total, Unrealized Loss	(1,633)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, Fair Value			$ 5,856
Less than 12 months, Unrealized Loss			(55)
12 months or more, Fair Value			32,639
12 months or more, Unrealized Loss			(1,105)
Total, Fair Value			38,495
Total, Unrealized Loss			(1,160)
Cumulative adjustment from adoption of new accounting pronouncements			(97)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	0
Less than 12 months, Unrealized Loss	0
12 months or more, Fair Value	2,970
12 months or more, Unrealized Loss	(28)
Total, Fair Value	2,970
Total, Unrealized Loss	(28)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, Fair Value			2,971
Less than 12 months, Unrealized Loss			(25)
12 months or more, Fair Value			0
12 months or more, Unrealized Loss			0
Total, Fair Value			2,971
Total, Unrealized Loss			(25)
Commercial mortgage backed securities issued by U.S. Agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	1,472
Less than 12 months, Unrealized Loss	(23)
12 months or more, Fair Value	0
12 months or more, Unrealized Loss	0
Total, Fair Value	1,472
Total, Unrealized Loss	(23)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Total, Unrealized Loss			0
Residential mortgage backed securities issued by U.S. Agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	385
Less than 12 months, Unrealized Loss	(3)
12 months or more, Fair Value	24,031
12 months or more, Unrealized Loss	(1,579)
Total, Fair Value	24,416
Total, Unrealized Loss	$ (1,582)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, Fair Value			1,400
Less than 12 months, Unrealized Loss			(15)
12 months or more, Fair Value			28,241
12 months or more, Unrealized Loss			(762)
Total, Fair Value			29,641
Total, Unrealized Loss			(777)
Asset-backed security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, Fair Value			0
Less than 12 months, Unrealized Loss			0
12 months or more, Fair Value			1,740
12 months or more, Unrealized Loss			(251)
Total, Fair Value			1,740
Total, Unrealized Loss			(251)
Mutual funds
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, Fair Value			1,485
Less than 12 months, Unrealized Loss			(15)
12 months or more, Fair Value			2,658
12 months or more, Unrealized Loss			(92)
Total, Fair Value			4,143
Total, Unrealized Loss			(107)
Retained earnings
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Cumulative adjustment from adoption of new accounting pronouncements		$ (97)	(97)
Retained earnings | ASU 2016-01
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Cumulative adjustment from adoption of new accounting pronouncements			$ (97)

Investments - Other Investments

Investments - Other Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Investments [Abstract]
Equity investments without readily determinable fair value	$ 1,069
Investments accounted for under the cost method		$ 893

Loans and Allowance for Loan _3

Loans and Allowance for Loan and Lease Losses - Components of Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 1,080,915		$ 1,064,630
Deferred fee (income) costs, net	3,299		2,767
Allowance for loan and lease losses	(13,463)	$ (13,369)	(14,196)	$ (15,048)	$ (17,178)	$ (16,801)
Loans, net	$ 1,070,751		$ 1,053,201
Percentage of loan portfolio	100.00%		100.00%
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 414,995		$ 394,493
Allowance for loan and lease losses	$ (7,296)	(7,493)	$ (9,155)	(9,165)	(10,113)	(11,276)
Percentage of loan portfolio	38.40%		37.10%
Commercial real estate loans – owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 226,861		$ 214,365
Percentage of loan portfolio	21.00%		20.10%
Commercial real estate loans – all other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 232,316		$ 228,090
Percentage of loan portfolio	21.50%		21.40%
Residential mortgage loans – multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 88,563		$ 114,302
Percentage of loan portfolio	8.20%		10.70%
Residential mortgage loans – single family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 21,634		$ 24,848
Percentage of loan portfolio	2.00%		2.30%
Construction and land development loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 36,961		$ 34,614
Allowance for loan and lease losses	$ (408)	$ (327)	$ (650)	$ (346)	$ (157)	$ (343)
Percentage of loan portfolio	3.40%		3.30%
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 59,585		$ 53,918
Percentage of loan portfolio	5.50%		5.10%

Loans and Allowance for Loan _4

Loans and Allowance for Loan and Lease Losses - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged to secure borrowings obtained from the FHLB	$ 772,000,000		$ 772,000,000		$ 669,000,000
Loans and leases receivable sold		$ 0	15,100,000	$ 0
Loans and leases receivable purchased	0		$ 0	30,100,000
Period of loan loss history and industry loss factors used to determine historical losses			4 years
Loans greater than 90 Days and accruing	0		$ 0		0
Impaired loans with no specific reserves	5,881,000		5,881,000		5,910,000
Impaired loans, impaired in prior year	1,600,000		1,600,000
Interest that would have been earned had impaired loans remained current in accordance with original terms	131,000	210,000	293,000	$ 563,000
Troubled debt restructurings, totals	0		0		1,300,000
Commercial real estate loans – all other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable sold	15,100,000
Loans greater than 90 Days and accruing	0		0		0
Impaired loans with no specific reserves	$ 0		$ 0		$ 1,568,000
Commercial real estate - owner occupied and commercial real estate - all other loans | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable purchased		$ 30,100,000

Loans and Allowance for Loan _5

Loans and Allowance for Loan and Lease Losses - Summary of Activity in ALLL (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 13,369	$ 17,178	$ 14,196	$ 16,801
Charge offs	(419)	(2,275)	(1,843)	(3,287)
Recoveries	513	145	1,110	1,534
Provision	0	0	0	0
Balance at end of period	13,463	15,048	13,463	15,048
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	7,493	10,113	9,155	11,276
Charge offs	(416)	(2,228)	(1,840)	(2,694)
Recoveries	448	140	1,009	1,334
Provision	(229)	1,140	(1,028)	(751)
Balance at end of period	7,296	9,165	7,296	9,165
Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	2,953	4,657	2,906	4,226
Charge offs	0	0	0	(432)
Recoveries	60	0	60	0
Provision	664	(615)	711	248
Balance at end of period	3,677	4,042	3,677	4,042
Construction and Land Development
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	327	157	650	343
Charge offs	0	0	0	0
Recoveries	0	0	0	27
Provision	81	189	(242)	(24)
Balance at end of period	408	346	408	346
Consumer and Single Family Mortgages
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	1,578	1,123	1,043	642
Charge offs	(3)	(47)	(3)	(161)
Recoveries	5	5	41	173
Provision	(21)	(89)	478	338
Balance at end of period	1,559	992	1,559	992
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	1,018	1,128	442	314
Charge offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(495)	(625)	81	189
Balance at end of period	$ 523	$ 503	$ 523	$ 503

Loans and Allowance for Loan _6

Loans and Allowance for Loan and Lease Losses - Loan Balances and Related ALLL (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	$ 0		$ 7
Allowance for loans collectively evaluated for impairment	13,463		14,189
Total allowance	13,463	$ 13,369	14,196	$ 15,048	$ 17,178	$ 16,801
Loans individually evaluated for impairment	5,881		6,360
Loans collectively evaluated for impairment	1,075,034		1,058,270
Total loans	1,080,915		1,064,630
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	0		7
Allowance for loans collectively evaluated for impairment	7,296		9,148
Total allowance	7,296	7,493	9,155	9,165	10,113	11,276
Loans individually evaluated for impairment	4,985		3,672
Loans collectively evaluated for impairment	410,010		390,821
Total loans	414,995		394,493
Real Estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	0		0
Allowance for loans collectively evaluated for impairment	3,677		2,906
Total allowance	3,677	2,953	2,906	4,042	4,657	4,226
Loans individually evaluated for impairment	850		2,461
Loans collectively evaluated for impairment	546,890		554,296
Total loans	547,740		556,757
Construction and Land Development
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	0		0
Allowance for loans collectively evaluated for impairment	408		650
Total allowance	408	327	650	346	157	343
Loans individually evaluated for impairment	0		0
Loans collectively evaluated for impairment	36,961		34,614
Total loans	36,961		34,614
Consumer and Single Family Mortgages
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	0		0
Allowance for loans collectively evaluated for impairment	1,559		1,043
Total allowance	1,559	1,578	1,043	992	1,123	642
Loans individually evaluated for impairment	46		227
Loans collectively evaluated for impairment	81,173		78,539
Total loans	81,219		78,766
Unallocated
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	0		0
Allowance for loans collectively evaluated for impairment	523		442
Total allowance	523	$ 1,018	442	$ 503	$ 1,128	$ 314
Loans individually evaluated for impairment	0		0
Loans collectively evaluated for impairment	0		0
Total loans	$ 0		$ 0

Loans and Allowance for Loan _7

Loans and Allowance for Loan and Lease Losses - Summary of Delinquency Status of Loans by Portfolio Type (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 13,746,000	$ 4,448,000
Current	1,067,169,000	1,060,182,000
Total loans	1,080,915,000	1,064,630,000
Loans greater than 90 Days and Accruing	0	0
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4,683,000	1,387,000
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	6,394,000	936,000
90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,669,000	2,125,000
Commercial loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	9,026,000	3,512,000
Current	405,969,000	390,981,000
Total loans	414,995,000	394,493,000
Loans greater than 90 Days and Accruing	0	0
Commercial loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	813,000	1,387,000
Commercial loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	5,544,000	0
Commercial loans | 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	2,669,000	2,125,000
Commercial real estate loans – owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	4,720,000	0
Current	222,141,000	214,365,000
Total loans	226,861,000	214,365,000
Loans greater than 90 Days and Accruing	0	0
Commercial real estate loans – owner occupied | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	3,870,000	0
Commercial real estate loans – owner occupied | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	850,000	0
Commercial real estate loans – owner occupied | 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial real estate loans – all other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	936,000
Current	232,316,000	227,154,000
Total loans	232,316,000	228,090,000
Loans greater than 90 Days and Accruing	0	0
Commercial real estate loans – all other | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Commercial real estate loans – all other | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	936,000
Commercial real estate loans – all other | 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – multi-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Current	88,563,000	114,302,000
Total loans	88,563,000	114,302,000
Loans greater than 90 Days and Accruing	0	0
Residential mortgage loans – multi-family | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – multi-family | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – multi-family | 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – single family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Current	21,634,000	24,848,000
Total loans	21,634,000	24,848,000
Loans greater than 90 Days and Accruing	0	0
Residential mortgage loans – single family | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – single family | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Residential mortgage loans – single family | 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction and Land Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Current	36,961,000	34,614,000
Total loans	36,961,000	34,614,000
Loans greater than 90 Days and Accruing	0	0
Construction and Land Development | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction and Land Development | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Construction and Land Development | 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Consumer loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Current	59,585,000	53,918,000
Total loans	59,585,000	53,918,000
Loans greater than 90 Days and Accruing	0	0
Consumer loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Consumer loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	0
Consumer loans | 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 0	$ 0

Loans and Allowance for Loan _8

Loans and Allowance for Loan and Lease Losses - Loans on Nonaccrual Status by Portfolio Type (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	$ 5,881	$ 5,910
Commercial loans
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	4,985	3,222
Commercial real estate loans – owner occupied
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	850	893
Commercial real estate loans – all other
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	0	1,568
Residential mortgage loans – single family
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	0	171
Consumer
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	$ 46	$ 56

Loans and Allowance for Loan _9

Loans and Allowance for Loan and Lease Losses - Summary of Loans by Portfolio Type and Internal Credit Quality Ratings (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 1,080,915	$ 1,064,630
Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,040,405	1,036,095
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	28,248	17,387
Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	12,262	10,782
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	366
Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans	414,995	394,493
Commercial loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	394,807	375,024
Commercial loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	12,692	11,009
Commercial loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	7,496	8,094
Commercial loans | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	366
Commercial real estate loans – owner occupied
Financing Receivable, Recorded Investment [Line Items]
Gross loans	226,861	214,365
Commercial real estate loans – owner occupied | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	217,085	207,094
Commercial real estate loans – owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	5,056	6,378
Commercial real estate loans – owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,720	893
Commercial real estate loans – all other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	232,316	228,090
Commercial real estate loans – all other | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	221,816	226,522
Commercial real estate loans – all other | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	10,500	0
Commercial real estate loans – all other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	1,568
Residential mortgage loans – multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	88,563	114,302
Residential mortgage loans – multi-family | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	88,563	114,302
Residential mortgage loans – single family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	21,634	24,848
Residential mortgage loans – single family | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	21,634	24,677
Residential mortgage loans – single family | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	171
Construction and Land Development
Financing Receivable, Recorded Investment [Line Items]
Gross loans	36,961	34,614
Construction and Land Development | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	36,961	34,614
Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans	59,585	53,918
Consumer loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	59,539	53,862
Consumer loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 46	$ 56

Loans and Allowance for Loan_10

Loans and Allowance for Loan and Lease Losses - Nonaccrual Loans and Restructured Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Impaired loans:
Nonaccruing loans	$ 5,881	$ 5,101
Nonaccruing restructured loans	0	809
Accruing restructured loans	0	450
Total impaired loans	5,881	6,360
Impaired loans less than 90 days delinquent and included in total impaired loans
Impaired loans:
Total impaired loans	$ 3,212	$ 3,994

Loans and Allowance for Loan_11

Loans and Allowance for Loan and Lease Losses - Additional Information with Respect to Impaired Loans, by Portfolio Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	$ 5,881		$ 5,881		$ 5,910
Recorded Investment, With allowance recorded	0		0		450
Total impaired loans	5,881		5,881		6,360
Unpaid Principal Balance, No allowance recorded	6,821		6,821		9,078
Unpaid Principal Balance, With allowance recorded	0		0		450
Unpaid Principal Balance	6,821		6,821		9,528
Related Allowance	0		0		7
Average Balance, No allowance recorded	5,604	$ 11,522	5,983	$ 17,193
Average Balance, With allowance recorded	0	5,314	209	3,865
Average Balance	5,604	16,836	6,192	21,058
Interest Income Recognized, No allowance recorded	39	19	101	90
Interest Income Recognized, With allowance recorded	0	8	0	24
Interest Income Recognized	39	27	101	114
Commercial loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	4,985		4,985		3,222
Recorded Investment, With allowance recorded	0		0		450
Total impaired loans	4,985		4,985		3,672
Unpaid Principal Balance, No allowance recorded	5,821		5,821		5,910
Unpaid Principal Balance, With allowance recorded	0		0		450
Unpaid Principal Balance	5,821		5,821		6,360
Related Allowance	0		0		7
Average Balance, No allowance recorded	4,700	8,547	4,256	13,628
Average Balance, With allowance recorded	0	5,314	209	3,865
Average Balance	4,700	13,861	4,465	17,493
Interest Income Recognized, No allowance recorded	39	19	101	89
Interest Income Recognized, With allowance recorded	0	8	0	24
Interest Income Recognized	39	27	101	113
Commercial real estate loans – owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	850		850		893
Total impaired loans	850		850		893
Unpaid Principal Balance, No allowance recorded	933		933		945
Unpaid Principal Balance	933		933		945
Related Allowance	0		0		0
Average Balance, No allowance recorded	856	1,164	871	1,653
Average Balance	856	1,164	871	1,653
Interest Income Recognized, No allowance recorded	0	0	0	0
Interest Income Recognized	0	0	0	0
Commercial real estate loans – all other
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	0		0		1,568
Total impaired loans	0		0		1,568
Unpaid Principal Balance, No allowance recorded	0		0		1,965
Unpaid Principal Balance	0		0		1,965
Related Allowance	0		0		0
Average Balance, No allowance recorded	0	1,613	762	1,650
Average Balance	0	1,613	762	1,650
Interest Income Recognized, No allowance recorded	0	0	0	0
Interest Income Recognized	0	0	0	0
Residential mortgage loans – single family
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	0		0		171
Total impaired loans	0		0		171
Unpaid Principal Balance, No allowance recorded	0		0		185
Unpaid Principal Balance	0		0		185
Related Allowance	0		0		0
Average Balance, No allowance recorded	0	180	43	196
Average Balance	0	180	43	196
Interest Income Recognized, No allowance recorded	0	0	0	0
Interest Income Recognized	0	0	0	0
Consumer loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, No allowance recorded	46		46		56
Total impaired loans	46		46		56
Unpaid Principal Balance, No allowance recorded	67		67		73
Unpaid Principal Balance	67		67		73
Related Allowance	0		0		$ 0
Average Balance, No allowance recorded	48	18	51	66
Average Balance	48	18	51	66
Interest Income Recognized, No allowance recorded	0	0	0	1
Interest Income Recognized	$ 0	$ 0	$ 0	$ 1

Loans and Allowance for Loan_12

Loans and Allowance for Loan and Lease Losses - Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)Loan	Sep. 30, 2017USD ($)Loan	Sep. 30, 2018USD ($)Loan	Sep. 30, 2017USD ($)Loan
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	0	0	0	3
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 2,228
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 1,590
TDRs that were modified within the preceding 12-month period which subsequently defaulted, number of loans | Loan	0	0	0	0
TDRs that were modified within the preceding 12-month period which subsequently defaulted, recorded investment	$ 0	$ 0	$ 0	$ 0
Commercial loans
Financing Receivable, Modifications [Line Items]
TDRs that were modified within the preceding 12-month period which subsequently defaulted, number of loans | Loan	0	0	0	0
TDRs that were modified within the preceding 12-month period which subsequently defaulted, recorded investment	$ 0	$ 0	$ 0	$ 0
Commercial real estate loans – owner occupied
Financing Receivable, Modifications [Line Items]
TDRs that were modified within the preceding 12-month period which subsequently defaulted, number of loans | Loan	0	0	0	0
TDRs that were modified within the preceding 12-month period which subsequently defaulted, recorded investment	$ 0	$ 0	$ 0	$ 0
Performing
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	0	0	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 489
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 489
Performing | Commercial loans
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	0	0	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 489
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 489
Nonperforming
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	0	0	0	2
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 1,739
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 1,101
Nonperforming | Commercial loans
Financing Receivable, Modifications [Line Items]
Number of loans | Loan	0	0	0	2
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 1,739
Post-Modification Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 1,101

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Net deferred tax assets	$ 11,227,000		$ 11,227,000			$ 0
Income tax (benefit) provision	(98,000)	$ 37,000	(11,183,000)	$ 150,000
Valuation allowance	0	21,700,000	0	21,700,000	$ 11,100,000	$ 15,937,000
Income tax benefit resulted from adjustment of deferred tax asset	98,000
Accrued interest or penalties associated with unrecognized tax benefits	0	0	0	0
Interest expense recognized	$ 0	$ 0	$ 0	$ 0

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Asset (Details) - USD ($)	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
Deferred tax asset:
Allowance for loan and lease losses	$ 3,980,000		$ 4,207,000
Other than temporary impairment on securities	56,000		56,000
Deferred compensation	654,000		693,000
Litigation reserve	131,000		131,000
Other accrued expenses	878,000		927,000
Charitable contributions	241,000		241,000
Reserve for unfunded commitments	103,000		103,000
Tax credits	60,000		60,000
Net operating loss carry forward	5,215,000		9,754,000
Stock based compensation	535,000		363,000
Depreciation and amortization	0		0
Unrealized losses on securities and deferred compensation	483,000		338,000
Total deferred tax assets	12,336,000		16,873,000
Deferred Tax Liabilities, Gross [Abstract]
Depreciation and amortization	(133,000)		(133,000)
Other	(976,000)		(803,000)
Total deferred tax liabilities	(1,109,000)		(936,000)
Valuation allowance	0	$ (11,100,000)	(15,937,000)	$ (21,700,000)
Total net deferred tax asset	$ 11,227,000		$ 0

Stock-Based Employee Compensa_3

Stock-Based Employee Compensation Plans - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	May 31, 2013	May 31, 2010	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)			864,330	829,154	864,330	829,154	792,577	1,066,914
Options exercised (in shares)			0	20,500	75,108	172,584
Aggregate intrinsic value of options exercised			$ 0	$ 85	$ 356	$ 310
Fair value of options vested			8	10	358	400
Aggregate intrinsic values of options outstanding and exercisable			1,700		$ 1,700		$ 1,400
Nonvested awards, expected weighted average recognition period					2 years 3 months 8 days
Aggregate amounts of stock based compensation expense, net of taxes			$ 166	$ 188	$ 458	$ 593
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of accumulated shares vested (in shares)			306,757		306,757
Restricted stock | Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, restricted shares and SARs, vesting period					1 year
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price per share of common stock as percentage of fair market value of shares on respective grant dates of stock options					100.00%
Minimum | Restricted stock | Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, restricted shares and SARs, vesting period					3 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, restricted shares and SARs, vesting period					5 years
Options and SARs, terms after date of grant					10 years
Maximum | Restricted stock | Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, restricted shares and SARs, vesting period					5 years
Equity Incentive Plan 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)		400,000	1,117,896		1,117,896
Additional shares authorized (in shares)	800,000
Maximum number of shares available for grant, percent of common stock outstanding					5.00%
Previously Approved Equity Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized (in shares)		158,211
Options outstanding (in shares)			66,442		66,442

Stock-Based Employee Compensa_4

Stock-Based Employee Compensation Plans - Weighted Average Assumptions (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of options granted during period (in dollars per share)			$ 2.81	$ 2.81
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	0.00%	0.00%	30.00%	33.00%
Risk-free interest rate	0.00%	0.00%	2.69%	1.95%
Expected dividends	0.00%	0.00%	0.00%	0.00%
Expected term (years)	0 years	0 years	5 years 8 months 31 days	5 years 8 months 25 days
Weighted average fair value of options granted during period (in dollars per share)	$ 0	$ 0	$ 2.81	$ 2.81

Stock-Based Employee Compensa_5

Stock-Based Employee Compensation Plans - Stock Option Activity under Plans (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Number of Shares
Outstanding, beginning of period (in shares)			792,577	1,066,914
Granted (in shares)			154,011	3,000
Exercised (in shares)	0	(20,500)	(75,108)	(172,584)
Forfeited/Canceled (in shares)			(7,150)	(68,176)
Outstanding, end of period (in shares)	864,330	829,154	864,330	829,154
Option Exercisable, end of period (in shares)	588,233	570,915	588,233	570,915
Options Vested, end of period (in shares)	588,233	570,915	588,233	570,915
Weighted- Average Exercise Price Per Share
Weighted Average Exercise Price, beginning of period (in dollars per share)			$ 6.41	$ 6.35
Granted (in dollars per share)			8.20	8.05
Exercised (in dollars per share)			4.95	5.77
Forfeited/Canceled (in dollars per share)			6.47	7.06
Weighted Average Exercise Price, end of period (in dollars per share)	$ 6.86	$ 6.42	6.86	6.42
Options Exercisable, end of period (in dollars per share)	6.49	6.19	6.49	6.19
Options Vested, end of period (in dollars per share)	$ 6.49	$ 6.19	$ 6.49	$ 6.19

Stock-Based Employee Compensa_6

Stock-Based Employee Compensation Plans - Vested and Unvested Options Outstanding (Details) - $ / shares	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, vested (in shares)	588,233		570,915
Options outstanding, unvested (in shares)	276,097	255,348	258,239	461,944
Options outstanding, weighted average exercise price (in dollars per share)	$ 6.86	$ 6.41	$ 6.42	$ 6.35
Options outstanding, weighted average remaining contractual life (years)	6 years 5 months 20 days
Options exercisable (in shares)	588,233		570,915
Options exercisable, weighted average exercise price (in dollars per share)	$ 6.49		$ 6.19
Options exercisable, weighted average remaining contractual life	5 years 6 months 10 days
$2.97 – $3.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option outstanding, exercise price, lower limit (in dollars per share)	$ 2.97
Option outstanding, exercise price, upper limit (in dollars per share)	$ 3.99
Options outstanding, vested (in shares)	18,003
Options outstanding, unvested (in shares)	0
Options outstanding, weighted average exercise price (in dollars per share)	$ 3.48
Options outstanding, weighted average remaining contractual life (years)	2 years 7 months 28 days
Options exercisable (in shares)	18,003
Options exercisable, weighted average exercise price (in dollars per share)	$ 3.48
$4.00 – $4.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option outstanding, exercise price, lower limit (in dollars per share)	4
Option outstanding, exercise price, upper limit (in dollars per share)	$ 4.99
Options outstanding, vested (in shares)	16,000
Options outstanding, unvested (in shares)	0
Options outstanding, weighted average exercise price (in dollars per share)	$ 4.34
Options outstanding, weighted average remaining contractual life (years)	2 years 6 months 2 days
Options exercisable (in shares)	16,000
Options exercisable, weighted average exercise price (in dollars per share)	$ 4.34
$5.00– $5.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option outstanding, exercise price, lower limit (in dollars per share)	5
Option outstanding, exercise price, upper limit (in dollars per share)	$ 5.99
Options outstanding, vested (in shares)	15,000
Options outstanding, unvested (in shares)	0
Options outstanding, weighted average exercise price (in dollars per share)	$ 5.30
Options outstanding, weighted average remaining contractual life (years)	4 years 8 months 4 days
Options exercisable (in shares)	15,000
Options exercisable, weighted average exercise price (in dollars per share)	$ 5.30
$6.00– $6.99
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option outstanding, exercise price, lower limit (in dollars per share)	6
Option outstanding, exercise price, upper limit (in dollars per share)	$ 6.99
Options outstanding, vested (in shares)	414,584
Options outstanding, unvested (in shares)	81,903
Options outstanding, weighted average exercise price (in dollars per share)	$ 6.61
Options outstanding, weighted average remaining contractual life (years)	5 years 8 months 16 days
Options exercisable (in shares)	414,584
Options exercisable, weighted average exercise price (in dollars per share)	$ 6.57
$7.00-$8.90
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option outstanding, exercise price, lower limit (in dollars per share)	7
Option outstanding, exercise price, upper limit (in dollars per share)	$ 8.90
Options outstanding, vested (in shares)	124,646
Options outstanding, unvested (in shares)	194,194
Options outstanding, weighted average exercise price (in dollars per share)	$ 7.63
Options outstanding, weighted average remaining contractual life (years)	8 years 1 month 20 days
Options exercisable (in shares)	124,646
Options exercisable, weighted average exercise price (in dollars per share)	$ 7.09

Stock-Based Employee Compensa_7

Stock-Based Employee Compensation Plans - Summary of Status of Unvested Options Outstanding and Changes in Number of Shares Subject to and in Weighted Average Grant Date Fair Values (Details) - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Number of Shares Subject to Options
Unvested, Beginning of Period (in shares)	255,348	461,944
Granted (in shares)	154,011	3,000
Vested (in shares)	(126,112)	(141,329)
Forfeited/Canceled (in shares)	(7,150)	(65,376)
Unvested, End of Period (in shares)	276,097	258,239
Weighted Average Grant Date Fair Value Per Share
Unvested, Beginning of Period (in dollars per share)	$ 2.80	$ 2.79
Granted (in dollars per share)	2.81	2.81
Vested (in dollars per share)	2.84	2.83
Forfeited/Canceled (in dollars per share)	2.66	2.67
Unvested, End of Period (in dollars per share)	$ 2.79	$ 2.80

Stock-Based Employee Compensa_8

Stock-Based Employee Compensation Plans - Restricted Stock Activity (Details) - Restricted stock - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Number of Shares
Outstanding, at beginning of period (in shares)	103,508	151,298
Granted (in shares)	82,217	29,907
Vested (in shares)	(62,564)	(69,107)
Forfeited (in shares)	(4,690)	(18,509)
Outstanding, at end of period (in shares)	118,471	93,589
Average Grant Date Fair Value Per Share
Outstanding, at beginning of period (in dollars per share)	$ 7.33	$ 6.84
Granted (in dollars per share)	8.33	7.69
Vested (in dollars per share)	7.26	6.81
Forfeited (in dollars per share)	7.55	6.82
Outstanding, at end of period (in dollars per share)	$ 8.06	$ 7.14

Stock-Based Employee Compensa_9

Stock-Based Employee Compensation Plans - Compensation Expense Expected to be Recognized (Details) $ in Thousands	Sep. 30, 2018USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated Stock Based Compensation Expense for remainder of year 2018	$ 236
Estimated Stock Based Compensation Expense for year 2019	431
Estimated Stock Based Compensation Expense for year 2020	341
Estimated Stock Based Compensation Expense for year 2021	126
Estimated Stock Based Compensation Expense for year 2022 and Beyond	82
Estimated Stock Based Compensation Expense	1,216
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated Stock Based Compensation Expense for remainder of year 2018	111
Estimated Stock Based Compensation Expense for year 2019	193
Estimated Stock Based Compensation Expense for year 2020	153
Estimated Stock Based Compensation Expense for year 2021	45
Estimated Stock Based Compensation Expense for year 2022 and Beyond	22
Estimated Stock Based Compensation Expense	524
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated Stock Based Compensation Expense for remainder of year 2018	125
Estimated Stock Based Compensation Expense for year 2019	238
Estimated Stock Based Compensation Expense for year 2020	188
Estimated Stock Based Compensation Expense for year 2021	81
Estimated Stock Based Compensation Expense for year 2022 and Beyond	60
Estimated Stock Based Compensation Expense	$ 692

Earnings Per Share ("EPS") - Co

Earnings Per Share ("EPS") - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basic EPS:
Net income	$ 3,900	$ 3,756	$ 22,976	$ 8,037
Less dividends on preferred stock	0	0	0	0
Less dividends on common stock	0	0	0	0
Less dividends on unvested shares	0	0	0	0
Net income allocable to common shareholders	3,900	3,756	22,976	8,037
Less earnings allocated to participating securities	64	16	203	39
Net income allocable to common shareholders	$ 3,836	$ 3,740	$ 22,773	$ 7,998
Weighted average common shares outstanding (in shares)	22,995,574	23,092,951	23,121,083	23,060,321
Basic earnings per common share (in dollars per share)	$ 0.17	$ 0.16	$ 0.98	$ 0.35
Diluted EPS:
Earnings allocated to common shareholders	$ 3,900	$ 3,756	$ 22,976	$ 8,037
Add dilutive effects for assumed conversion of Series A preferred stock	271,000	0	91,000	0
Weighted average diluted common shares outstanding (in shares)	23,598,267	23,331,413	23,535,408	23,290,068
Diluted earnings per common share (in dollars per share)	$ 0.17	$ 0.16	$ 0.98	$ 0.35
Restricted stock
Diluted EPS:
Add dilutive effects of restricted stock grants and stock options	115,000	100,000	115,000	112,000
Stock options
Diluted EPS:
Add dilutive effects of restricted stock grants and stock options	216,000	138,000	208,000	117,000

Earnings Per Share ("EPS") - An

Earnings Per Share ("EPS") - Anti-dilutive Securities (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive shares excluded from computation of earnings per share (in shares)	140,985	129,431	128,711	357,859

Shareholders' Equity - Narrativ

Shareholders' Equity - Narrative (Details) - $ / shares	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)	21,917,995	21,917,995	23,232,515
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, liquidation preference (in dollars per share)	$ 0.0001	$ 0.0001
Patriot Financial Partners III, LP
Class of Stock [Line Items]
Number of shares acquired	3,636,363
Percentage of voting interests acquired	15.60%	15.60%
Patriot Financial Partners III, LP | Series A Preferred Stock
Class of Stock [Line Items]
Number of shares acquired	1,467,155
Patriot Financial Partners III, LP | Common stock
Class of Stock [Line Items]
Number of shares acquired	2,169,208
Percentage of voting interests acquired	9.90%	9.90%
Series A Non-Voting Preferred stock
Class of Stock [Line Items]
Exchange of common stock for Series A Non-Voting Preferred Stock (in shares)		1,467,155
Common stock
Class of Stock [Line Items]
Exchange of common stock for Series A Non-Voting Preferred Stock (in shares)		(1,467,155)

Shareholders' Equity - Accumula

Shareholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Jan. 01, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			$ 112,876,000
Other comprehensive income, net of tax			(444,000)
Ending Balance	$ 136,321,000		136,321,000		$ 112,876,000
Net gain on sale of securities available for sale	0	$ 0	48,000	$ 0
Cumulative adjustment from adoption of new accounting pronouncements					(97,000)
Unrealized Gain (Loss) on Securities Available-for-Sale, net of tax
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			(1,143,000)	(1,842,000)	(1,842,000)
Other comprehensive income before reclassifications, net of tax			(493,000)		695,000
Amounts reclassified from accumulated other comprehensive income (loss), net of tax			49,000		4,000
Other comprehensive income, net of tax			(444,000)		699,000
Ending Balance	(1,587,000)		(1,587,000)		(1,143,000)
Other comprehensive income before reclassifications, tax provision			44,000
Other comprehensive loss, tax			44,000
Accumulated Other Comprehensive Income (Loss), Net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			(1,143,000)	$ (1,842,000)	(1,842,000)
Other comprehensive income before reclassifications, net of tax			(493,000)		695,000
Amounts reclassified from accumulated other comprehensive income (loss), net of tax			49,000		4,000
Other comprehensive income, net of tax			(444,000)		699,000
Ending Balance	(1,587,000)		(1,587,000)		(1,143,000)
Other comprehensive income before reclassifications, tax provision			44,000		0
Other comprehensive loss, tax			44,000
Net gain on sale of securities available for sale			48,000
Accumulated Other Comprehensive Income (Loss), Net | ASU 2016-01
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative adjustment from adoption of new accounting pronouncements					97,000
Retained earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance			(36,670,000)
Ending Balance	$ (13,791,000)		$ (13,791,000)		(36,670,000)
Cumulative adjustment from adoption of new accounting pronouncements					(97,000)	$ (97,000)
Retained earnings | ASU 2016-01
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative adjustment from adoption of new accounting pronouncements					$ (97,000)

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Commitment And Contingencies [Line Items]
Loss reserve for unfunded loan commitments	$ 350,000	$ 350,000
Loans pledged as collateral to support FHLB borrowings	772,000,000
Unused borrowing capacity	351,000,000	285,000,000
Maximum borrowings outstanding at any month-end	40,900,000	40,900,000
Short-term FHLB advances outstanding		40,000,000
FHLB advances—long-term	0	0
Letter of credit
Commitment And Contingencies [Line Items]
Commitment to fund certain loans including letter of credit	301,000,000	$ 295,000,000
Unfavorable Regulatory Action
Commitment And Contingencies [Line Items]
Loss contingency during period	$ 1,000,000
FHLB Advances
Commitment And Contingencies [Line Items]
Weighted-average annualized interest rate	2.20%	1.65%

Commitments and Contingencies C

Commitments and Contingencies Commitments and Contingencies - Schedule of Borrowings and Contractual Obligations (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
FHLB advances—short-term	$ 40,000,000	$ 40,000,000
Other borrowings—short-term	0	866,000
Total borrowings—short-term	40,000,000	40,866,000
FHLB advances—long-term	0	0
Debt and Capital Lease Obligations	$ 40,000,000	$ 40,866,000
Other short-term borrowings
Short-term Debt [Line Items]
Interest Rate		15.00%

Commitments and Contingencies_2

Commitments and Contingencies Commitments and Contingencies - Schedule of FHLB Borrowings (Details) - FHLB Advances	Sep. 30, 2018USD ($)
2.34% due November 2018
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	2.34%
1.77% due December 2018
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	1.77%
2.36% due December 2018
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	2.36%
2.31% due January 2019
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	2.31%

Business Segment Information -

Business Segment Information - Additional Information (Details)	9 Months Ended
	Sep. 30, 2018Segment
Segment Reporting [Abstract]
Reportable business segment	1

Business Segment Information _2

Business Segment Information - Net Interest Income and Noninterest Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net interest income	$ 11,689	$ 12,005	$ 36,321	$ 32,472
Noninterest Income	1,115	964	3,306	3,364
Assets	1,319,998		1,319,998		$ 1,322,604
Operating segment | Commercial
Segment Reporting Information [Line Items]
Net interest income	11,876	11,038	35,325	31,564
Noninterest Income	1,109	959	3,288	2,944
Assets	1,319,358		1,319,358		1,320,454
Other
Segment Reporting Information [Line Items]
Net interest income	(187)	967	996	908
Noninterest Income	6	$ 5	18	$ 420
Assets	$ 640		$ 640		$ 2,150

Regulatory Capital - Actual Amo

Regulatory Capital - Actual Amount and Capital Ratios of Company and Bank (Details) $ in Thousands	Sep. 30, 2018USD ($)
Bank
Total Capital to Risk Weighted Assets
Total Capital to Risk Weighted Assets, Actual Capital Amount	$ 155,679
Total Capital to Risk Weighted Assets, Actual Capital Ratio	12.80%
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 104,995
Total Capital to Risk Weighted Assets To be Categorized as Well-capitalized, Amount	121,734
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, Actual Capital Amount	$ 141,866
Tier 1 Capital to Risk Weighted Asset, Actual Capital Ratio	11.70%
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 80,649
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Amount	97,387
Tier 1 Capital to Average Assets
Tier 1 Capital to Average Assets, Actual Capital Amount	$ 141,866
Tier 1 Capital to Average Asset, Actual Capital Ratio	10.70%
Tier 1 Capital to Average Assets, For Capital Adequacy Purposes, Amount	$ 53,069
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Amount	$ 66,337
Minimum | Company
Total Capital to Risk Weighted Assets
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	8.625%
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	6.625%
Tier 1 Capital to Average Assets
Tier 1 Capital to Average Assets, For Capital Adequacy Purposes, Ratio	4.00%
Minimum | Bank
Total Capital to Risk Weighted Assets
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	8.625%
Total Capital to Risk Weighted Assets To be Categorized as Well-capitalized, Ratio	10.00%
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	6.625%
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Ratio	8.00%
Tier 1 Capital to Average Assets
Tier 1 Capital to Average Assets, For Capital Adequacy Purposes, Ratio	4.00%
Tier 1 Capital to Average Assets, To be Categorized As Well Capitalized, Ratio	5.00%
Common stock | Bank
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, Actual Capital Amount	$ 141,866
Tier 1 Capital to Risk Weighted Asset, Actual Capital Ratio	11.70%
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 62,389
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Amount	$ 79,127
Common stock | Minimum | Company
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	5.125%
Common stock | Minimum | Bank
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Ratio	5.125%
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Ratio	6.50%