Pacific Mercantile Bancorp (PMBC) 10-Q 3 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 01, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	PACIFIC MERCANTILE BANCORP
Entity Central Index Key	0001109546
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	PMBC
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding (in shares)		22,017,758

CONSOLIDATED STATEMENTS OF FINA

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 11,032	$ 13,250
Interest bearing deposits with financial institutions	246,338	174,468
Cash and cash equivalents	257,370	187,718
Interest-bearing time deposits with financial institutions	2,420	2,420
Federal Reserve Bank of San Francisco and Federal Home Loan Bank Stock, at cost	8,822	8,822
Securities available for sale, at fair value	29,421	31,231
Loans (net of allowances of $11,514 and $13,506, respectively)	1,062,997	1,083,240
Other real estate owned	0	1,173
Accrued interest receivable	4,053	4,003
Premises and equipment, net	1,023	1,039
Net deferred tax assets	10,781	10,935
Other assets	21,753	18,757
Total assets	1,398,640	1,349,338
Deposits:
Noninterest-bearing	364,083	340,406
Interest-bearing	817,267	795,596
Total deposits	1,181,350	1,136,002
Borrowings	40,000	40,000
Accrued interest payable	521	361
Other liabilities	16,626	14,074
Junior subordinated debentures	17,527	17,527
Total liabilities	1,256,024	1,207,964
Commitments and contingencies (Note 11)
Shareholders’ equity:
Series A Non-Voting Preferred Stock, no par value, 1,467,155 shares authorized at March 31, 2019 and December 31, 2018; 1,467,155 shares issued and outstanding at March 31, 2019 and December 31, 2018	8,480	8,480
Common stock, no par value, 85,000,000 shares authorized; 22,017,758 and 21,916,195 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	143,666	143,466
Accumulated deficit	(8,753)	(9,428)
Accumulated other comprehensive loss	(777)	(1,144)
Total shareholders’ equity	142,616	141,374
Total liabilities and shareholders’ equity	$ 1,398,640	$ 1,349,338

CONSOLIDATED STATEMENTS OF FI_2

CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Loans, allowances	$ 11,514	$ 13,506
Preferred stock, shares authorized (in shares)	1,467,155	1,467,155
Preferred stock, shares issued (in shares)	1,467,155	1,467,155
Preferred stock, shares outstanding (in shares)	1,467,155	1,467,155
Common stock, shares authorized (in shares)	85,000,000	85,000,000
Common stock, shares issued (in shares)	22,017,758	21,916,195
Common stock, shares outstanding (in shares)	22,017,758	21,916,195

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest income:
Loans, including fees	$ 14,520	$ 14,045
Securities available for sale and stock	292	274
Interest-bearing deposits with financial institutions	1,355	696
Total interest income	16,167	15,015
Interest expense:
Deposits	3,624	2,478
Borrowings	492	352
Total interest expense	4,116	2,830
Net interest income	12,051	12,185
Provision for loan and lease losses	3,300	0
Net interest income after provision for loan and lease losses	8,751	12,185
Noninterest income
Service fees on deposits and other banking services	398	387
Net gain on sale of securities available for sale	0	48
Net gain on sale of Small Business Administration loans	300	0
Net loss on sale of other assets	(25)	(4)
Other noninterest income	817	624
Total noninterest income	1,490	1,055
Noninterest expense
Salaries and employee benefits	5,441	6,160
Occupancy	627	618
Equipment and depreciation	461	446
Data processing	518	392
FDIC expense	164	282
Other real estate owned expense, net	68	0
Professional fees	796	749
Business development	196	184
Loan related expense	186	170
Insurance	61	63
Other operating expense	465	469
Total noninterest expense	8,983	9,533
Income before income taxes	1,258	3,707
Income tax provision	376	0
Net income allocable to common shareholders	$ 882	$ 3,707
Basic income per common share:
Net income allocable to common shareholders (in dollars per share)	$ 0.04	$ 0.16
Diluted income per common share:
Net income available to allocable shareholders (in dollars per share)	$ 0.04	$ 0.16
Weighted average number of common shares outstanding:
Basic (in shares)	21,824,363	23,156,055
Diluted (in shares)	23,546,751	23,442,380

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 882	$ 3,707
Other comprehensive income (loss), net of tax:
Change in unrealized holding gain (loss) on securities available for sale	367	(347)
Less: Reclassification adjustment for change in accounting principle	0	(97)
Less: Reclassification adjustment for net gains (losses) included in net income	0	48
Net unrealized holding gain (loss) on securities available for sale	367	(298)
Total comprehensive income	$ 1,249	$ 3,409

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)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Implementation of ASU	$ (97)			$ (97)
Beginning Balance (in shares) at Dec. 31, 2017		0	23,233,000
Beginning Balance at Dec. 31, 2017	112,876	$ 0	$ 150,689	(36,670)	$ (1,143)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of restricted stock, net (in shares)			72,000
Common stock based compensation expense	$ 179		$ 179
Common stock options exercised (in shares)	8,000		8,000
Common stock options exercised	$ 28		$ 28
Net income	3,707			3,707
Other comprehensive loss	(298)				(298)
Ending Balance (in shares) at Mar. 31, 2018		0	23,313,000
Ending Balance at Mar. 31, 2018	116,395	$ 0	$ 150,896	(33,060)	(1,441)
Beginning Balance (in shares) at Dec. 31, 2017		0	23,233,000
Beginning Balance at Dec. 31, 2017	112,876	$ 0	$ 150,689	(36,670)	(1,143)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive loss					(1)
Ending Balance (in shares) at Dec. 31, 2018		1,467,000	21,916,000
Ending Balance at Dec. 31, 2018	141,374	$ 8,480	$ 143,466	(9,428)	(1,144)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Implementation of ASU	(207)			(207)
Issuance of restricted stock, net (in shares)			102,000
Common stock based compensation expense	$ 200		$ 200
Common stock options exercised (in shares)	0
Net income	$ 882			882
Other comprehensive loss	367				367
Ending Balance (in shares) at Mar. 31, 2019		1,467,000	22,018,000
Ending Balance at Mar. 31, 2019	$ 142,616	$ 8,480	$ 143,666	$ (8,753)	$ (777)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows From Operating Activities:
Net income	$ 882	$ 3,707
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	108	88
Provision for loan and lease losses	3,300	0
Amortization of premium on securities	38	49
Net (gain) loss on sale of securities available for sale	0	(48)
Net amortization of deferred fees and unearned income on loans	124	(16)
Net loss (gain) on sales of other real estate owned	66	0
Net loss on sale of other assets	25	4
Net gain on sale of small business administration loans	(300)	0
Small business administration loan originations	(4,751)	0
Proceeds from sale of small business administration loans	5,077	0
Stock-based compensation expense	200	179
Other	0	59
Changes in operating assets and liabilities:
Net (increase) decrease in accrued interest receivable	(50)	57
Net decrease in other assets	8,015	1,195
Net decrease in income taxes receivable	177	4
Net increase in accrued interest payable	160	24
Net decrease in other liabilities	(8,273)	(2,876)
Net cash provided by operating activities	4,798	2,426
Cash Flows From Investing Activities:
Net decrease in interest-bearing time deposits with financial institutions	0	500
Maturities of and principal payments received on securities available for sale and other stock	2,293	1,596
Purchase of securities available for sale and other stock	0	(340)
Proceeds from sale of securities available for sale and other stock	0	6,883
Purchase of other investments	(594)	(89)
Proceeds from sale of other real estate owned	1,107	0
Net decrease in loans	16,739	971
Purchases of premises and equipment	(68)	(207)
Proceeds from sale of other assets	29	32
Net cash provided by investing activities	19,506	9,346
Cash Flows From Financing Activities:
Net increase (decrease) in deposits	45,348	(25,365)
Proceeds from borrowings	20,000	11,000
Payments of borrowings	(20,000)	(11,000)
Proceeds from exercise of common stock options	0	28
Net cash provided by (used in) financing activities	45,348	(25,337)
Net increase (decrease) in cash and cash equivalents	69,652	(13,565)
Cash and Cash Equivalents, beginning of period	187,718	198,208
Cash and Cash Equivalents, end of period	257,370	184,643
Supplementary Cash Flow Information:
Cash paid for interest on deposits and other borrowings	3,956	2,806
Cash paid for income taxes	0	1
Right-of-use assets obtained in exchange for new operating lease liabilities	10,618
Non-Cash Investing Activities:
Transfer of loans into other assets	58	0
Transfer of loans into other real estate owned	0	1,346
Impact of change in accounting principle	0	97
Assumption of debt upon foreclosure of property	$ 0	$ 727

Nature of Business

Nature of Business	3 Months Ended
	Mar. 31, 2019
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	3 Months Ended
	Mar. 31, 2019
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, 2018 (“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 months ended March 31, 2019 and 2018 include the accounts of PMBC, the Bank and PMAR. All significant intercompany balances and transactions were eliminated in consolidation. Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“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. The new standard establishes a right-of-use model (ROU) that requires a lessee to recognize a ROU asset and lease liability on the balance sheet for all leases with a term longer than 12 months. Leases will be classified as finance or operating, with classification affecting the pattern and classification of expense recognition in the income statement. Under the new guidance, lessor accounting is largely unchanged and the accounting for sale and leaseback transactions were simplified. We elected most of the new standard’s available transition practical expedients. The new standard had a material effect on our financial statements. While we continue to assess all of the effects of adoption, we currently believe the most significant effects relate to (1) the recognition of new ROU assets and lease liabilities on our balance sheet for our office and equipment operating leases; and (2) providing significant new disclosures about our leasing activities. The new standard also provides practical expedients for an entity’s ongoing accounting. We have elected the short-term lease recognition exemption for all leases that qualify. This means, for those leases that qualify, we did not recognize ROU assets or lease liabilities, and this includes not recognizing ROU assets or lease liabilities for existing short-term leases of those assets in transition. 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. In March 2019, the FASB issued ASU 2019-01, “Leases (Topic 842): Codification Improvements,” which provides additional guidance for fair value of the underlying asset by lessors that are not manufacturers or dealers, requires lessors that are banking institutions to present all "principal payments received under leases" within investing activities, and exempts both lessees and lessors from having to provide certain interim disclosures in the fiscal year in which a company adopts the new leases standard. On adoption of these accounting standards, we recognized additional operating liabilities of $11.1 million , with corresponding ROU assets of the same or less amount based on the present value of the remaining minimum rental payments under current leasing standards for existing operating leases. We recorded a $207 thousand adjustment to our beginning retained earnings. This guidance is effective for interim and annual periods beginning after December 15, 2018. Early adoption is permitted. We adopted this guidance on January 1, 2019. 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 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	3 Months Ended
	Mar. 31, 2019
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 months ended March 31, 2019 , we purchased no FHLB or FRBSF stock. No shares of FHLB stock or FRBSF stock were called during the three months ended March 31, 2019 . 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 March 31, 2019 and December 31, 2018 : At March 31, 2019 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets at Fair Value: Debt securities available for sale U.S. Treasury securities $ 1,990 $ — $ 1,990 $ — Commercial mortgage backed securities issued by U.S. Agencies 4,544 — 4,544 — Residential mortgage backed securities issued by U.S. agencies 22,887 — 22,887 — Total debt securities available for sale at fair value $ 29,421 $ — $ 29,421 $ — At December 31, 2018 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets at Fair Value: Debt securities available for sale U.S. Treasury securities $ 2,980 $ — $ 2,980 $ — Commercial mortgage backed securities issued by U.S. Agencies 4,534 — 4,534 — Residential mortgage backed securities issued by U.S. agencies 23,717 — 23,717 — Total debt securities available for sale 31,231 — 31,231 — 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 March 31, 2019 At December 31, 2018 (Dollars in thousands) Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets at Fair Value: Impaired loans $ 1,321 $ — $ — $ 1,321 $ 4,226 $ — $ — $ 4,226 Other foreclosed assets 96 — 96 — 91 — 91 — Other real estate owned — — — — 1,173 — 1,173 — Total $ 1,417 $ — $ 96 $ 1,321 $ 5,490 $ — $ 1,264 $ 4,226 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 March 31, 2019 , a summary of the significant unobservable inputs and valuation techniques is as follows: Fair Value Measurement as of March 31, 2019 Valuation Techniques (2) Unobservable Inputs (2) Range Weighted Average (Dollars in thousands) Assets Impaired loans $ 1,321 Third-Party Pricing Discounted cash flow N/A (1) N/A (1) (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 March 31, 2019 , 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, 2018. Fair Value Measurements for Other Financial Instruments The table below provides estimated fair values and related carrying amounts of our financial instruments as of March 31, 2019 and December 31, 2018 , excluding financial assets and liabilities which are recorded at fair value on a recurring basis. Estimated Fair Value At March 31, 2019 At December 31, 2018 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 $ 257,370 $ 257,370 $ 257,370 $ — $ — $ 187,718 $ 187,718 187,718 — — Interest-bearing deposits with financial institutions 2,420 2,420 2,420 — — 2,420 2,420 2,420 — — Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock 8,822 8,822 8,822 — — 8,822 8,822 8,822 — — Loans, net 1,062,997 1,047,449 — — 1,047,449 1,083,240 1,066,147 — — 1,066,147 Accrued interest receivable 4,053 4,053 4,053 — — 4,003 4,003 4,003 — — Financial liabilities: Noninterest bearing deposits 364,083 364,083 364,083 — — 340,406 340,406 340,406 — — Interest-bearing deposits 817,267 816,899 — 816,899 — 795,596 794,321 — 794,321 — Borrowings 40,000 40,003 — 40,003 — 40,000 39,976 — 39,976 — Junior subordinated debentures 17,527 17,527 — 17,527 — 17,527 17,527 — 17,527 — Accrued interest payable 521 521 521 — — 361 361 361 — —

Investments

Investments	3 Months Ended
	Mar. 31, 2019
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 March 31, 2019 and December 31, 2018 : (Dollars in thousands) March 31, 2019 December 31, 2018 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 $ 1,999 $ — $ (9 ) $ 1,990 $ 2,999 $ — $ (19 ) $ 2,980 Commercial mortgage backed securities issued by U.S. Agencies (1) 4,465 79 — 4,544 4,495 40 (1 ) 4,534 Residential mortgage backed securities issued by U.S. Agencies (2) 23,437 2 (552 ) 22,887 24,739 1 (1,023 ) 23,717 Total $ 29,901 $ 81 $ (561 ) $ 29,421 $ 32,233 $ 41 $ (1,043 ) $ 31,231 (1) Secured by first liens on commercial apartment building mortgages. (2) Secured by closed-end first liens on 1-4 family residential mortgages. At March 31, 2019 and December 31, 2018 , U.S. agency residential mortgage backed securities with an aggregate fair market value of $12.8 million and $18.2 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 March 31, 2019 and December 31, 2018 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 March 31, 2019 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 $ 6,890 $ 13,298 $ 8,421 $ 1,292 $ 29,901 Securities available for sale, estimated fair value 6,750 13,086 8,280 1,305 29,421 Weighted average yield 1.49 % 1.65 % 2.13 % 3.26 % 1.82 % At December 31, 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 $ 7,874 $ 13,466 $ 9,971 $ 922 $ 32,233 Securities available for sale, estimated fair value 7,663 12,934 9,710 924 31,231 Weighted average yield 1.46 % 1.62 % 2.22 % 3.13 % 1.81 % We purchased no securities available for sale during the three months ended March 31, 2019 or during the three months ended March 31, 2018 . During the three months ended March 31, 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 March 31, 2019 . The tables below indicate, as of March 31, 2019 and December 31, 2018 , 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 March 31, 2019 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 $ — $ — $ 1,990 $ (9 ) $ 1,990 $ (9 ) Residential mortgage backed securities issued by U.S. Agencies — — 22,742 (552 ) 22,742 (552 ) Total $ — $ — $ 24,732 $ (561 ) $ 24,732 $ (561 ) Securities with Unrealized Loss at December 31, 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 $ — $ — $ 2,980 $ (19 ) $ 2,980 $ (19 ) Commercial mortgage backed securities issued by U.S. Agencies 999 (1 ) — — 999 (1 ) Residential mortgage backed securities issued by U.S. Agencies 361 (3 ) 23,299 (1,020 ) 23,660 (1,023 ) Total $ 1,360 $ (4 ) $ 26,279 $ (1,039 ) $ 27,639 $ (1,043 ) 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 March 31, 2019 . We recorded no impairment credit losses on available-for-sale debt securities in our consolidated statements of operations for the three months ended March 31, 2019 and 2018 . We have made a determination that the remainder of our securities with respect to which there were unrealized losses as of March 31, 2019 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 March 31, 2019 , we had three investments in private companies and limited partnerships without a readily determinable fair value. As of March 31, 2019 , we owned less than 3% of the total investment in each such company or 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 months ended March 31, 2019 , these investments were not impaired and there were no observable price changes. As a result, the balance shown below as of March 31, 2019 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 months ended March 31, 2019 , we had $594 thousand of capital contributions to these investments. We had $89 thousand of capital contributions to these investments during the three months ended March 31, 2018 . As of March 31, 2019 and December 31, 2018 , our equity investments without readily determinable fair value were as follows: March 31, 2019 December 31, 2018 (Dollars in thousands) Equity investments without readily determinable fair value $ 1,834 $ 1,240

Loans and Allowance for Loan an

Loans and Allowance for Loan and Lease Losses	3 Months Ended
	Mar. 31, 2019
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: March 31, 2019 December 31, 2018 (Dollars in thousands) Amount Percent Amount Percent Commercial loans $ 448,021 41.8 % $ 444,441 40.6 % Commercial real estate loans – owner occupied 213,334 19.9 % 211,645 19.3 % Commercial real estate loans – all other 220,106 20.5 % 226,441 20.7 % Residential mortgage loans – multi-family 91,856 8.6 % 97,173 8.9 % Residential mortgage loans – single family 19,776 1.8 % 21,176 1.9 % Construction and land development loans 29,261 2.7 % 38,496 3.5 % Consumer loans 49,549 4.6 % 54,514 5.0 % Gross loans 1,071,903 100.0 % 1,093,886 100.0 % Deferred fee (income) costs, net 2,608 2,860 Allowance for loan and lease losses (11,514 ) (13,506 ) Loans, net $ 1,062,997 $ 1,083,240 At March 31, 2019 and December 31, 2018 , real estate loans of approximately $847 million and $807 million , respectively, were pledged to secure borrowings obtained from the FHLB and to support our unfunded borrowing capacity. At March 31, 2019 and December 31, 2018 , real estate and consumer loans of $228 million and $51 million , respectively, were pledged to secure borrowings from the FRB to support our unfunded borrowing capacity. No loans were sold during either the three months ended March 31, 2019 or March 31, 2018. During the three months ended March 31, 2019 and March 31, 2018, we purchased no loans. 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 utilizes a series of nineteen staggered 16-quarter migration periods 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 months ended March 31, 2019 and 2018: (Dollars in thousands) Commercial Real Estate Construction and Land Development Consumer and Single Family Mortgages Unallocated Total ALLL in the three months ended March 31, 2019: Balance at beginning of period $ 8,071 $ 3,643 $ 426 $ 1,290 $ 76 $ 13,506 Charge offs (5,669 ) — — (29 ) — (5,698 ) Recoveries 401 — — 5 — 406 Provision 4,092 (934 ) (131 ) 220 53 3,300 Balance at end of period $ 6,895 $ 2,709 $ 295 $ 1,486 $ 129 $ 11,514 ALLL in the three months ended March 31, 2018: Balance at beginning of period $ 9,155 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,196 Charge offs (1,068 ) — — — — (1,068 ) Recoveries 272 — — 5 — 277 Provision (725 ) 349 238 64 74 — Balance at end of period $ 7,634 $ 3,255 $ 888 $ 1,112 $ 516 $ 13,405 Set forth below is information regarding loan balances and the related ALLL, by portfolio type, as of March 31, 2019 and December 31, 2018 . (Dollars in thousands) Commercial Real Estate Construction and Land Consumer Unallocated Total ALLL balance at March 31, 2019 related to: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 6,895 2,709 295 1,486 129 11,514 Total $ 6,895 $ 2,709 $ 295 $ 1,486 $ 129 $ 11,514 Loans balance at March 31, 2019 related to: Loans individually evaluated for impairment $ 351 $ 807 $ — $ — $ — $ 1,158 Loans collectively evaluated for impairment 447,670 524,489 29,261 69,325 — 1,070,745 Total $ 448,021 $ 525,296 $ 29,261 $ 69,325 $ — $ 1,071,903 ALLL balance at December 31, 2018 related to: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 8,071 3,643 426 1,290 76 13,506 Total $ 8,071 $ 3,643 $ 426 $ 1,290 $ 76 $ 13,506 Loans balance at December 31, 2018 related to: Loans individually evaluated for impairment $ 3,352 $ 831 $ — $ 43 $ — $ 4,226 Loans collectively evaluated for impairment 441,089 534,428 38,496 75,647 — 1,089,660 Total $ 444,441 $ 535,259 $ 38,496 $ 75,690 $ — $ 1,093,886 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 March 31, 2019 and December 31, 2018 : (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 March 31, 2019 Commercial loans $ 351 $ — $ — $ 351 $ 447,670 $ 448,021 $ — Commercial real estate loans – owner-occupied 807 — — 807 212,527 213,334 — Commercial real estate loans – all other — — — — 220,106 220,106 — Residential mortgage loans – multi-family — — — — 91,856 91,856 — Residential mortgage loans – single family — — — — 19,776 19,776 — Construction and land development loans — — — — 29,261 29,261 — Consumer loans — — — — 49,549 49,549 — Total $ 1,158 $ — $ — $ 1,158 $ 1,070,745 $ 1,071,903 $ — At December 31, 2018 Commercial loans $ — $ 3,705 $ 4,273 $ 7,978 $ 436,463 $ 444,441 $ 1,278 Commercial real estate loans – owner-occupied — 831 — 831 210,814 211,645 — Commercial real estate loans – all other — — — — 226,441 226,441 — Residential mortgage loans – multi-family — — — — 97,173 97,173 — Residential mortgage loans – single family — — — — 21,176 21,176 — Construction and land development loans — — — — 38,496 38,496 — Consumer loans 13 — — 13 54,501 54,514 — Total $ 13 $ 4,536 $ 4,273 $ 8,822 $ 1,085,064 $ 1,093,886 $ 1,278 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 March 31, 2019 . There were $1.3 million of loans 90 days or more past due and still accruing interest at December 31, 2018 . 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 March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 (Dollars in thousands) Nonaccrual loans: Commercial loans $ 475 $ 3,352 Commercial real estate loans – owner occupied 807 831 Consumer 39 43 Total (1) $ 1,321 $ 4,226 (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 March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 (Dollars in thousands) Pass: Commercial loans $ 429,800 $ 428,287 Commercial real estate loans – owner occupied 207,659 205,914 Commercial real estate loans – all other 220,106 226,441 Residential mortgage loans – multi family 91,856 97,173 Residential mortgage loans – single family 19,776 21,176 Construction and land development loans 29,261 38,496 Consumer loans 49,441 54,415 Total pass loans $ 1,047,899 $ 1,071,902 Special Mention: Commercial loans $ 15,152 $ 10,411 Commercial real estate loans – owner occupied 4,869 4,900 Total special mention loans $ 20,021 $ 15,311 Substandard: Commercial loans $ 3,069 $ 5,743 Commercial real estate loans – owner occupied 806 831 Consumer loans 108 99 Total substandard loans $ 3,983 $ 6,673 Doubtful: Total doubtful loans $ — $ — Total Loans: $ 1,071,903 $ 1,093,886 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 March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 (Dollars in thousands) Impaired loans: Nonaccruing loans $ 1,321 $ 4,226 Nonaccruing restructured loans (1) — — Accruing restructured loans (1)(2) — — Total impaired loans $ 1,321 $ 4,226 Impaired loans less than 90 days delinquent and included in total impaired loans $ 1,321 $ 1,232 (1) As of March 31, 2019 and December 31, 2018, we had no restructured loans. (2) See “ Troubled Debt Restructurings ” below for a description of accruing restructured loans at March 31, 2019 and December 31, 2018. The table below contains additional information with respect to impaired loans, by portfolio type, as of March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 Recorded Investment Unpaid Principal Balance Related Allowance (1) Recorded Investment Unpaid Principal Balance Related Allowance (1) (Dollars in thousands) No allowance recorded: Commercial loans $ 475 $ 654 $ — $ 3,352 $ 4,516 $ — Commercial real estate loans – owner occupied 807 912 — 831 925 — Consumer loans 39 62 — 43 65 — Total 1,321 1,628 — 4,226 5,506 — With allowance recorded: Total — — — — — — Total Commercial loans $ 475 $ 654 $ — $ 3,352 $ 4,516 $ — Commercial real estate loans – owner occupied 807 912 — 831 925 — Consumer loans 39 62 — 43 65 — Total 1,321 1,628 — 4,226 5,506 — (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 March 31, 2019 and December 31, 2018 , there were $1.3 million and $4.2 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 March 31, 2019 for which no specific reserves were allocated, $1.3 million had been deemed impaired in the prior year. Average balances and interest income recognized on impaired loans, by portfolio type, for the three months ended March 31, 2019 and 2018 were as follows: Three Months Ended March 31, 2019 2018 Average Balance Interest Income Recognized Average Balance Interest Income Recognized (Dollars in thousands) No allowance recorded: Commercial loans $ 1,914 $ — $ 3,813 $ 62 Commercial real estate loans – owner occupied 819 — 887 — Commercial real estate loans – all other — — 1,523 — Residential mortgage loans – single family — — 85 — Consumer loans 41 — 55 — Total 2,774 — 6,363 62 With allowance recorded: Commercial loans — — 418 9 Total — — 418 9 Total Commercial loans 1,914 — 4,231 71 Commercial real estate loans – owner occupied 819 — 887 — Commercial real estate loans – all other — — 1,523 — Residential mortgage loans – single family — — 85 — Consumer loans 41 — 55 — Total $ 2,774 $ — $ 6,781 $ 71 The interest that would have been earned had the impaired loans remained current in accordance with their original terms was $28 thousand and $187 thousand during the three months ended March 31, 2019 and 2018 , 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 at both March 31, 2019 and December 31, 2018 . 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. There were no loans restructured as TDRs during the three months ended March 31, 2019 or 2018.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes For the three months ended March 31, 2019 , we had income tax expense of $376 thousand as a result of our operating income. 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 March 31, 2019 . 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 ten trailing quarters of positive income and our forecast. Negative evidence included our accumulated deficit. For the three months ended March 31, 2018 , we had no provision for income tax recorded as a result of our full valuation allowance of $11.6 million at March 31, 2018 . During the three months ended March 31, 2018 , management evaluated the positive and negative evidence and determined that there was enough negative evidence to support the full valuation allowance of $11.6 million at March 31, 2018 . While management believed that the Company would be able to realize the deferred tax asset within the period that our operating losses may be carried forward, we were unable to assert the timing as to when that realization would occur. Negative evidence at March 31, 2018 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 March 31, 2019, we were subject to examination by the Internal Revenue Service with respect to our U.S. federal tax returns for the 2015 to 2017 tax years and the Franchise Tax Board for California state income tax returns for the 2014 to 2017 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 March 31, 2019, 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 months ended March 31, 2019 and 2018.

Leases

Leases	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Leases	Leases We have historically entered into a number of lease arrangements under which we are the lessee. Specifically, all of our physical locations are subject to operating leases. In addition, we have elected the short-term lease practical expedient related to operating leases. Two of our office leases, including our corporate headquarters, include multiple optional renewal periods. To the extent we conclude that it is reasonably certain that a renewal option will be exercised, that renewal period is then included in the lease term, and the related payments are reflected in the ROU asset and lease liability. Generally, we consider any additional renewal periods to be reasonably certain of being exercised. All of our leases include fixed rental payments. We commonly enter into leases under which the lease payments increase at pre-determined dates. While the majority of our leases are gross leases, we also have a number of leases in which we make separate payments to the lessor based on the lessor’s property and casualty insurance costs and the property taxes assessed on the property, as well as a portion of the common area maintenance associated with the property. During the three months ended March 31, 2019 , we recognized rent expense associated with our leases as follows: Three Months Ended March 31, 2019 Lease cost (Dollars in thousands) Operating lease cost $ 556 Short-term lease cost (1) 40 Total lease cost $ 596 Weighted-average remaining lease term—operating leases (in years) 5.76 (1) Includes leases that are less than 12 months and equipment leases that are accounted for on a cash basis. Because we generally do not have access to the rate implicit in the lease, we utilize our borrowing rate with the FHLB as the discount rate. The weighted average discount rate associated with operating leases as of March 31, 2019 is 1.68% . Supplemental balance sheet information related to leases was as follows: Financial Statement Classification March 31, 2019 (Dollars in thousands) Operating right-of-use assets Other assets $ 10,105 Operating lease liabilities Other liabilities $ 10,545 During the three months ended March 31, 2019 , we had the following cash and non-cash activities associated with our leases: Three Months Ended March 31, 2019 (Dollars in thousands) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases (fixed payments) $ 559 Non-cash activities: Right-of-use assets obtained in exchange for new operating lease liabilities $ 10,618 Maturities of operating lease liabilities as of March 31, 2019 are as follows: (Dollars in thousands) For the years ending December 31, Remainder of 2019 1,716 2020 1,954 2021 1,695 2022 1,702 2023 1,708 2024 and beyond 2,285 Total 11,060 Less: Imputed interest 515 Total Lease liabilities 10,545

Stock-Based Employee Compensati

Stock-Based Employee Compensation Plans	3 Months Ended
	Mar. 31, 2019
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 March 31, 2019 . 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 357,517 shares of restricted stock, net of shares withheld for taxes, have vested as of March 31, 2019 thereby decreasing the maximum number of shares authorized under the 2010 Incentive Plan. As a result, as of March 31, 2019 , the maximum number of shares that were authorized for the grant of options or other equity incentives under the 2010 Incentive Plan totaled 1,067,136 (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 March 31, 2019 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 March 31, Assumptions with respect to: 2019 (1) 2018 Expected volatility — % 30 % Risk-free interest rate — % 2.69 % Expected dividends — % — % Expected term (years) 0 5.8 Weighted average fair value of options granted during period $ — $ 2.81 (1) No stock options were granted during the three months ended March 31, 2019. The following table summarizes the stock option activity under the Company’s equity incentive plans during the three months ended March 31, 2019 and 2018 , respectively. Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share 2019 2018 Outstanding – January 1, 864,330 $ 6.86 792,577 $ 6.41 Granted — — 154,011 8.20 Exercised — — (8,000 ) 3.48 Forfeited/Canceled (3,162 ) 8.49 (7,150 ) 6.47 Outstanding – March 31, 861,168 6.85 931,438 6.73 Options Exercisable – March 31, 708,643 $ 6.64 624,474 $ 6.32 Options Vested – March 31, 708,643 $ 6.64 624,474 $ 6.32 Options to purchase 0 and 8,000 shares of our common stock were exercised during the three months ended March 31, 2019 and 2018 , respectively. The aggregate intrinsic value of options exercised during the three months ended March 31, 2019 and 2018 was $0 and $45 thousand , respectively. The fair value of options that vested during the three months ended March 31, 2019 and 2018 was $337 thousand and $275 thousand , respectively. The following table provides additional information regarding the vested and unvested options that were outstanding at March 31, 2019 . Options Outstanding as of March 31, 2019 Options Exercisable (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 2.20 18,003 $ 3.48 $4.00 – $4.99 16,000 — 4.34 2.05 16,000 4.34 $5.00– $5.99 15,000 — 5.30 4.22 15,000 5.30 $6.00– $6.99 454,868 41,619 6.61 5.25 454,868 6.58 $7.00-$8.90 204,772 110,906 7.63 7.67 204,772 7.34 708,643 152,525 $ 6.85 6.00 708,643 $ 6.64 (1) The weighted average remaining contractual life of the options that were exercisable as of March 31, 2019 was 5.49 years. The aggregate intrinsic value of options that were outstanding and exercisable under the 2010 Incentive Plan at March 31, 2019 and December 31, 2018 was $719 thousand and $388 thousand , respectively. A summary of the status of the unvested options outstanding as of March 31, 2019 and 2018 , and changes in the weighted average grant date fair values of the unvested options during the three months ended March 31, 2019 and 2018 , are set forth in the following table. For the three months ended March 31, 2019 2018 Number of Shares Subject to Options Weighted Average Grant Date Fair Value Per Share Number of Weighted Unvested at the beginning of the period 275,457 $ 2.79 255,348 $ 2.80 Granted — — 154,011 2.81 Vested (119,770 ) 2.82 (95,245 ) 2.88 Forfeited/Canceled (3,162 ) 2.89 (7,150 ) 2.66 Unvested at the end of the period 152,525 2.77 306,964 2.78 At March 31, 2019 , the weighted average period over which nonvested awards were expected to be recognized was 2.28 years. Restricted Stock The following table summarizes the activity related to restricted stock granted, vested and forfeited under our equity incentive plans during the three months ended March 31, 2019 and 2018 . For the three months ended March 31, 2019 2018 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 115,031 $ 8.04 103,508 $ 7.33 Granted 105,896 8.71 75,417 8.19 Vested (49,120 ) 7.80 (52,351 ) 7.24 Forfeited (4,333 ) 9.28 (3,250 ) 8.08 Outstanding at the end of the period 167,474 $ 8.50 123,324 $ 7.87 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 March 31, 2019 , 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 2019 $ 121 $ 450 $ 571 2020 151 458 609 2021 44 327 371 2022 17 76 93 2023 and beyond 3 8 11 $ 336 $ 1,319 $ 1,655 The aggregate amounts of stock based compensation expense recognized in our consolidated statements of operations for the three months ended March 31, 2019 and 2018 were $141 thousand and $179 thousand , respectively, in each case net of taxes.

Earnings Per Share ("EPS")

Earnings Per Share ("EPS")	3 Months Ended
	Mar. 31, 2019
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 months ended March 31, 2019 and 2018 . (In thousands, except per share data) For the Three Months Ended March 31, 2019 2018 Basic EPS: Net income $ 882 $ 3,707 Less dividends on preferred stock — — Less dividends on common stock — — Less dividends on unvested shares — — Net income allocable to common shareholders $ 882 $ 3,707 Less earnings allocated to participating securities 60 17 Earnings allocated to common shareholders $ 822 $ 3,690 Weighted average common shares outstanding 21,824 23,156 Basic earnings per common share $ 0.04 $ 0.16 Diluted EPS: Earnings allocated to common shareholders $ 882 $ 3,707 Weighted average common shares outstanding 21,824 23,156 Add dilutive effects of restricted stock grants 136 110 Add dilutive effects for assumed conversion of Series A preferred stock 1,467 — Add dilutive effect for stock options 120 176 Weighted average diluted common shares outstanding 23,547 23,442 Diluted earnings per common share $ 0.04 $ 0.16 (1) The basic and diluted earnings per share amounts for the three months ended March 31, 2019 and 2018 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 March 31, 2019 2018 Stock options (1) 188,582 72,744 (1) Represents stock options that were excluded from the computation of diluted earnings per common share for the three months ended March 31, 2019 and 2018 as a result of the shares being “out-of-the-money.”

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity Accumulated Other Comprehensive Income (Loss), net Accumulated other comprehensive income (loss), net as of March 31, 2019 and December 31, 2018 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, 2017 $ (1,143 ) $ (1,143 ) Other comprehensive income before reclassifications, net of tax of $142 thousand (50 ) (50 ) Amounts reclassified from accumulated other comprehensive loss (1) 49 49 Other comprehensive loss, net of tax of $142 thousand (1 ) (1 ) Ending balance as of December 31, 2018 $ (1,144 ) $ (1,144 ) Other comprehensive income before reclassifications, net of tax of $154 thousand 367 367 Amounts reclassified from accumulated other comprehensive loss — — Other comprehensive income, net of tax of $154 thousand 367 367 Ending balance as of March 31, 2019 $ (777 ) $ (777 ) (1) 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	3 Months Ended
	Mar. 31, 2019
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 March 31, 2019 and December 31, 2018 , we were committed to fund certain loans including letters of credit amounting to approximately $297 million and $302 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 March 31, 2019 and December 31, 2018 . 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 March 31, 2019 and December 31, 2018 , our borrowings and contractual obligations consisted of the following: (Dollars in thousands) March 31, 2019 December 31, 2018 FHLB advances—short-term $ 40,000 $ 40,000 FHLB advances—long-term — — Total $ 40,000 $ 40,000 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 2.65% for the three months ended March 31, 2019 . Principal Amounts Interest Rate Maturity Dates (Dollars in thousands) 10,000 2.66 % May 28, 2019 10,000 2.65 % June 26, 2019 10,000 2.64 % July 15, 2019 10,000 2.63 % September 4, 2019 At March 31, 2019 , $847 million of loans were pledged to support our FHLB borrowings and our unfunded borrowing capacity. As of March 31, 2019 , we had unused borrowing capacity of $357 million with the FHLB. The highest amount of borrowings outstanding at any month-end during the three months ended March 31, 2019 was $40 million . As of December 31, 2018 , 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 2.54% for the year ended December 31, 2018 . As of December 31, 2018 , we had unused borrowing capacity of $365 million with the FHLB. The highest amount of borrowings outstanding at any month-end during the year ended December 31, 2018 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 year ended December 31, 2018, we settled this matter with the DOJ for $1.0 million , which we have fully accrued and funded as of March 31, 2019 . Based on our evaluation of the remaining lawsuits and other proceedings that were pending against us as of March 31, 2019 , 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	3 Months Ended
	Mar. 31, 2019
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 months ended March 31, 2019 and 2018 . (Dollars in thousands) Commercial Other (1) Total Net interest income for the three months ended March 31, 2019 $ 12,284 $ (233 ) $ 12,051 2018 $ 11,601 $ 584 $ 12,185 Noninterest income for the three months ended March 31, 2019 $ 1,483 $ 7 $ 1,490 2018 $ 1,049 $ 6 $ 1,055 Segment Assets at: March 31, 2019 $ 1,398,165 $ 475 $ 1,398,640 December 31, 2018 $ 1,349,097 $ 241 $ 1,349,338 (1) Represents net interest income and noninterest income for PMAR and PMBC.

Regulatory Capital

Regulatory Capital	3 Months Ended
	Mar. 31, 2019
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 March 31, 2019 , as compared to the regulatory requirements applicable to it. 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 162,868 13.4 % 104,549 At least 8.625 $ 121,217 At least 10.0 Common Equity Tier 1 Capital to Risk Weighted Assets 151,004 12.5 % 62,124 At least 5.125 $ 78,791 At least 6.5 Tier 1 Capital to Risk Weighted Assets 151,004 12.5 % 80,306 At least 6.625 $ 96,973 At least 8.0 Tier 1 Capital to Average Assets 151,004 10.9 % 55,521 At least 4.0 $ 69,401 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 March 31, 2019 , 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)	3 Months Ended
	Mar. 31, 2019
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 months ended March 31, 2019 and 2018 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 February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“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. The new standard establishes a right-of-use model (ROU) that requires a lessee to recognize a ROU asset and lease liability on the balance sheet for all leases with a term longer than 12 months. Leases will be classified as finance or operating, with classification affecting the pattern and classification of expense recognition in the income statement. Under the new guidance, lessor accounting is largely unchanged and the accounting for sale and leaseback transactions were simplified. We elected most of the new standard’s available transition practical expedients. The new standard had a material effect on our financial statements. While we continue to assess all of the effects of adoption, we currently believe the most significant effects relate to (1) the recognition of new ROU assets and lease liabilities on our balance sheet for our office and equipment operating leases; and (2) providing significant new disclosures about our leasing activities. The new standard also provides practical expedients for an entity’s ongoing accounting. We have elected the short-term lease recognition exemption for all leases that qualify. This means, for those leases that qualify, we did not recognize ROU assets or lease liabilities, and this includes not recognizing ROU assets or lease liabilities for existing short-term leases of those assets in transition. 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. In March 2019, the FASB issued ASU 2019-01, “Leases (Topic 842): Codification Improvements,” which provides additional guidance for fair value of the underlying asset by lessors that are not manufacturers or dealers, requires lessors that are banking institutions to present all "principal payments received under leases" within investing activities, and exempts both lessees and lessors from having to provide certain interim disclosures in the fiscal year in which a company adopts the new leases standard. On adoption of these accounting standards, we recognized additional operating liabilities of $11.1 million , with corresponding ROU assets of the same or less amount based on the present value of the remaining minimum rental payments under current leasing standards for existing operating leases. We recorded a $207 thousand adjustment to our beginning retained earnings. This guidance is effective for interim and annual periods beginning after December 15, 2018. Early adoption is permitted. We adopted this guidance on January 1, 2019. 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 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 months ended March 31, 2019 , we purchased no FHLB or FRBSF stock. No shares of FHLB stock or FRBSF stock were called during the three months ended March 31, 2019 . 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)	3 Months Ended
	Mar. 31, 2019
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 March 31, 2019 and December 31, 2018 : At March 31, 2019 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets at Fair Value: Debt securities available for sale U.S. Treasury securities $ 1,990 $ — $ 1,990 $ — Commercial mortgage backed securities issued by U.S. Agencies 4,544 — 4,544 — Residential mortgage backed securities issued by U.S. agencies 22,887 — 22,887 — Total debt securities available for sale at fair value $ 29,421 $ — $ 29,421 $ — At December 31, 2018 (Dollars in thousands) Total Level 1 Level 2 Level 3 Assets at Fair Value: Debt securities available for sale U.S. Treasury securities $ 2,980 $ — $ 2,980 $ — Commercial mortgage backed securities issued by U.S. Agencies 4,534 — 4,534 — Residential mortgage backed securities issued by U.S. agencies 23,717 — 23,717 — Total debt securities available for sale 31,231 — 31,231 —
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 March 31, 2019 At December 31, 2018 (Dollars in thousands) Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets at Fair Value: Impaired loans $ 1,321 $ — $ — $ 1,321 $ 4,226 $ — $ — $ 4,226 Other foreclosed assets 96 — 96 — 91 — 91 — Other real estate owned — — — — 1,173 — 1,173 — Total $ 1,417 $ — $ 96 $ 1,321 $ 5,490 $ — $ 1,264 $ 4,226
Summary of Significant Unobservable Inputs and Valuation Techniques	For our fair value measurements classified in Level 3 of the fair value hierarchy as of March 31, 2019 , a summary of the significant unobservable inputs and valuation techniques is as follows: Fair Value Measurement as of March 31, 2019 Valuation Techniques (2) Unobservable Inputs (2) Range Weighted Average (Dollars in thousands) Assets Impaired loans $ 1,321 Third-Party Pricing Discounted cash flow N/A (1) N/A (1) (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 March 31, 2019 , 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, 2018.
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 March 31, 2019 and December 31, 2018 , excluding financial assets and liabilities which are recorded at fair value on a recurring basis. Estimated Fair Value At March 31, 2019 At December 31, 2018 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 $ 257,370 $ 257,370 $ 257,370 $ — $ — $ 187,718 $ 187,718 187,718 — — Interest-bearing deposits with financial institutions 2,420 2,420 2,420 — — 2,420 2,420 2,420 — — Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock 8,822 8,822 8,822 — — 8,822 8,822 8,822 — — Loans, net 1,062,997 1,047,449 — — 1,047,449 1,083,240 1,066,147 — — 1,066,147 Accrued interest receivable 4,053 4,053 4,053 — — 4,003 4,003 4,003 — — Financial liabilities: Noninterest bearing deposits 364,083 364,083 364,083 — — 340,406 340,406 340,406 — — Interest-bearing deposits 817,267 816,899 — 816,899 — 795,596 794,321 — 794,321 — Borrowings 40,000 40,003 — 40,003 — 40,000 39,976 — 39,976 — Junior subordinated debentures 17,527 17,527 — 17,527 — 17,527 17,527 — 17,527 — Accrued interest payable 521 521 521 — — 361 361 361 — —

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2019
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 March 31, 2019 and December 31, 2018 : (Dollars in thousands) March 31, 2019 December 31, 2018 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 $ 1,999 $ — $ (9 ) $ 1,990 $ 2,999 $ — $ (19 ) $ 2,980 Commercial mortgage backed securities issued by U.S. Agencies (1) 4,465 79 — 4,544 4,495 40 (1 ) 4,534 Residential mortgage backed securities issued by U.S. Agencies (2) 23,437 2 (552 ) 22,887 24,739 1 (1,023 ) 23,717 Total $ 29,901 $ 81 $ (561 ) $ 29,421 $ 32,233 $ 41 $ (1,043 ) $ 31,231 (1) Secured by first liens on commercial apartment building mortgages. (2) Secured by closed-end first liens on 1-4 family residential mortgages.
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 March 31, 2019 and December 31, 2018 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 March 31, 2019 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 $ 6,890 $ 13,298 $ 8,421 $ 1,292 $ 29,901 Securities available for sale, estimated fair value 6,750 13,086 8,280 1,305 29,421 Weighted average yield 1.49 % 1.65 % 2.13 % 3.26 % 1.82 % At December 31, 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 $ 7,874 $ 13,466 $ 9,971 $ 922 $ 32,233 Securities available for sale, estimated fair value 7,663 12,934 9,710 924 31,231 Weighted average yield 1.46 % 1.62 % 2.22 % 3.13 % 1.81 %
Gross Unrealized Losses and Fair Values of Investments	The tables below indicate, as of March 31, 2019 and December 31, 2018 , 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 March 31, 2019 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 $ — $ — $ 1,990 $ (9 ) $ 1,990 $ (9 ) Residential mortgage backed securities issued by U.S. Agencies — — 22,742 (552 ) 22,742 (552 ) Total $ — $ — $ 24,732 $ (561 ) $ 24,732 $ (561 ) Securities with Unrealized Loss at December 31, 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 $ — $ — $ 2,980 $ (19 ) $ 2,980 $ (19 ) Commercial mortgage backed securities issued by U.S. Agencies 999 (1 ) — — 999 (1 ) Residential mortgage backed securities issued by U.S. Agencies 361 (3 ) 23,299 (1,020 ) 23,660 (1,023 ) Total $ 1,360 $ (4 ) $ 26,279 $ (1,039 ) $ 27,639 $ (1,043 )
Schedule of Other Investments	As of March 31, 2019 and December 31, 2018 , our equity investments without readily determinable fair value were as follows: March 31, 2019 December 31, 2018 (Dollars in thousands) Equity investments without readily determinable fair value $ 1,834 $ 1,240

Loans and Allowance for Loan _2

Loans and Allowance for Loan and Lease Losses (Tables)	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Composition of Loan Portfolio	The loan portfolio consisted of the following at: March 31, 2019 December 31, 2018 (Dollars in thousands) Amount Percent Amount Percent Commercial loans $ 448,021 41.8 % $ 444,441 40.6 % Commercial real estate loans – owner occupied 213,334 19.9 % 211,645 19.3 % Commercial real estate loans – all other 220,106 20.5 % 226,441 20.7 % Residential mortgage loans – multi-family 91,856 8.6 % 97,173 8.9 % Residential mortgage loans – single family 19,776 1.8 % 21,176 1.9 % Construction and land development loans 29,261 2.7 % 38,496 3.5 % Consumer loans 49,549 4.6 % 54,514 5.0 % Gross loans 1,071,903 100.0 % 1,093,886 100.0 % Deferred fee (income) costs, net 2,608 2,860 Allowance for loan and lease losses (11,514 ) (13,506 ) Loans, net $ 1,062,997 $ 1,083,240
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 months ended March 31, 2019 and 2018: (Dollars in thousands) Commercial Real Estate Construction and Land Development Consumer and Single Family Mortgages Unallocated Total ALLL in the three months ended March 31, 2019: Balance at beginning of period $ 8,071 $ 3,643 $ 426 $ 1,290 $ 76 $ 13,506 Charge offs (5,669 ) — — (29 ) — (5,698 ) Recoveries 401 — — 5 — 406 Provision 4,092 (934 ) (131 ) 220 53 3,300 Balance at end of period $ 6,895 $ 2,709 $ 295 $ 1,486 $ 129 $ 11,514 ALLL in the three months ended March 31, 2018: Balance at beginning of period $ 9,155 $ 2,906 $ 650 $ 1,043 $ 442 $ 14,196 Charge offs (1,068 ) — — — — (1,068 ) Recoveries 272 — — 5 — 277 Provision (725 ) 349 238 64 74 — Balance at end of period $ 7,634 $ 3,255 $ 888 $ 1,112 $ 516 $ 13,405 Set forth below is information regarding loan balances and the related ALLL, by portfolio type, as of March 31, 2019 and December 31, 2018 . (Dollars in thousands) Commercial Real Estate Construction and Land Consumer Unallocated Total ALLL balance at March 31, 2019 related to: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 6,895 2,709 295 1,486 129 11,514 Total $ 6,895 $ 2,709 $ 295 $ 1,486 $ 129 $ 11,514 Loans balance at March 31, 2019 related to: Loans individually evaluated for impairment $ 351 $ 807 $ — $ — $ — $ 1,158 Loans collectively evaluated for impairment 447,670 524,489 29,261 69,325 — 1,070,745 Total $ 448,021 $ 525,296 $ 29,261 $ 69,325 $ — $ 1,071,903 ALLL balance at December 31, 2018 related to: Loans individually evaluated for impairment $ — $ — $ — $ — $ — $ — Loans collectively evaluated for impairment 8,071 3,643 426 1,290 76 13,506 Total $ 8,071 $ 3,643 $ 426 $ 1,290 $ 76 $ 13,506 Loans balance at December 31, 2018 related to: Loans individually evaluated for impairment $ 3,352 $ 831 $ — $ 43 $ — $ 4,226 Loans collectively evaluated for impairment 441,089 534,428 38,496 75,647 — 1,089,660 Total $ 444,441 $ 535,259 $ 38,496 $ 75,690 $ — $ 1,093,886
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 March 31, 2019 and December 31, 2018 : (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 March 31, 2019 Commercial loans $ 351 $ — $ — $ 351 $ 447,670 $ 448,021 $ — Commercial real estate loans – owner-occupied 807 — — 807 212,527 213,334 — Commercial real estate loans – all other — — — — 220,106 220,106 — Residential mortgage loans – multi-family — — — — 91,856 91,856 — Residential mortgage loans – single family — — — — 19,776 19,776 — Construction and land development loans — — — — 29,261 29,261 — Consumer loans — — — — 49,549 49,549 — Total $ 1,158 $ — $ — $ 1,158 $ 1,070,745 $ 1,071,903 $ — At December 31, 2018 Commercial loans $ — $ 3,705 $ 4,273 $ 7,978 $ 436,463 $ 444,441 $ 1,278 Commercial real estate loans – owner-occupied — 831 — 831 210,814 211,645 — Commercial real estate loans – all other — — — — 226,441 226,441 — Residential mortgage loans – multi-family — — — — 97,173 97,173 — Residential mortgage loans – single family — — — — 21,176 21,176 — Construction and land development loans — — — — 38,496 38,496 — Consumer loans 13 — — 13 54,501 54,514 — Total $ 13 $ 4,536 $ 4,273 $ 8,822 $ 1,085,064 $ 1,093,886 $ 1,278
Loans on Nonaccrual Status by Portfolio Type	The following table provides information with respect to loans on nonaccrual status, by portfolio type, as of March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 (Dollars in thousands) Nonaccrual loans: Commercial loans $ 475 $ 3,352 Commercial real estate loans – owner occupied 807 831 Consumer 39 43 Total (1) $ 1,321 $ 4,226 (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 March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 (Dollars in thousands) Pass: Commercial loans $ 429,800 $ 428,287 Commercial real estate loans – owner occupied 207,659 205,914 Commercial real estate loans – all other 220,106 226,441 Residential mortgage loans – multi family 91,856 97,173 Residential mortgage loans – single family 19,776 21,176 Construction and land development loans 29,261 38,496 Consumer loans 49,441 54,415 Total pass loans $ 1,047,899 $ 1,071,902 Special Mention: Commercial loans $ 15,152 $ 10,411 Commercial real estate loans – owner occupied 4,869 4,900 Total special mention loans $ 20,021 $ 15,311 Substandard: Commercial loans $ 3,069 $ 5,743 Commercial real estate loans – owner occupied 806 831 Consumer loans 108 99 Total substandard loans $ 3,983 $ 6,673 Doubtful: Total doubtful loans $ — $ — Total Loans: $ 1,071,903 $ 1,093,886
Schedule of Impaired Loans	The following table sets forth information regarding impaired loans, at March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 (Dollars in thousands) Impaired loans: Nonaccruing loans $ 1,321 $ 4,226 Nonaccruing restructured loans (1) — — Accruing restructured loans (1)(2) — — Total impaired loans $ 1,321 $ 4,226 Impaired loans less than 90 days delinquent and included in total impaired loans $ 1,321 $ 1,232 (1) As of March 31, 2019 and December 31, 2018, we had no restructured loans. (2) See “ Troubled Debt Restructurings ” below for a description of accruing restructured loans at March 31, 2019 and December 31, 2018. Average balances and interest income recognized on impaired loans, by portfolio type, for the three months ended March 31, 2019 and 2018 were as follows: Three Months Ended March 31, 2019 2018 Average Balance Interest Income Recognized Average Balance Interest Income Recognized (Dollars in thousands) No allowance recorded: Commercial loans $ 1,914 $ — $ 3,813 $ 62 Commercial real estate loans – owner occupied 819 — 887 — Commercial real estate loans – all other — — 1,523 — Residential mortgage loans – single family — — 85 — Consumer loans 41 — 55 — Total 2,774 — 6,363 62 With allowance recorded: Commercial loans — — 418 9 Total — — 418 9 Total Commercial loans 1,914 — 4,231 71 Commercial real estate loans – owner occupied 819 — 887 — Commercial real estate loans – all other — — 1,523 — Residential mortgage loans – single family — — 85 — Consumer loans 41 — 55 — Total $ 2,774 $ — $ 6,781 $ 71 The table below contains additional information with respect to impaired loans, by portfolio type, as of March 31, 2019 and December 31, 2018 : March 31, 2019 December 31, 2018 Recorded Investment Unpaid Principal Balance Related Allowance (1) Recorded Investment Unpaid Principal Balance Related Allowance (1) (Dollars in thousands) No allowance recorded: Commercial loans $ 475 $ 654 $ — $ 3,352 $ 4,516 $ — Commercial real estate loans – owner occupied 807 912 — 831 925 — Consumer loans 39 62 — 43 65 — Total 1,321 1,628 — 4,226 5,506 — With allowance recorded: Total — — — — — — Total Commercial loans $ 475 $ 654 $ — $ 3,352 $ 4,516 $ — Commercial real estate loans – owner occupied 807 912 — 831 925 — Consumer loans 39 62 — 43 65 — Total 1,321 1,628 — 4,226 5,506 — (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.

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Summary of Lease Cost and Payments	During the three months ended March 31, 2019 , we recognized rent expense associated with our leases as follows: Three Months Ended March 31, 2019 Lease cost (Dollars in thousands) Operating lease cost $ 556 Short-term lease cost (1) 40 Total lease cost $ 596 Weighted-average remaining lease term—operating leases (in years) 5.76 (1) Includes leases that are less than 12 months and equipment leases that are accounted for on a cash basis. During the three months ended March 31, 2019 , we had the following cash and non-cash activities associated with our leases: Three Months Ended March 31, 2019 (Dollars in thousands) Cash paid for amounts included in the measurement of lease liabilities Operating cash flows from operating leases (fixed payments) $ 559 Non-cash activities: Right-of-use assets obtained in exchange for new operating lease liabilities $ 10,618
Summary of Lease Assets and Liabilities	Supplemental balance sheet information related to leases was as follows: Financial Statement Classification March 31, 2019 (Dollars in thousands) Operating right-of-use assets Other assets $ 10,105 Operating lease liabilities Other liabilities $ 10,545
Summary of Maturity of Lease Liabilities	Maturities of operating lease liabilities as of March 31, 2019 are as follows: (Dollars in thousands) For the years ending December 31, Remainder of 2019 1,716 2020 1,954 2021 1,695 2022 1,702 2023 1,708 2024 and beyond 2,285 Total 11,060 Less: Imputed interest 515 Total Lease liabilities 10,545

Stock-Based Employee Compensa_2

Stock-Based Employee Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2019
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 March 31, Assumptions with respect to: 2019 (1) 2018 Expected volatility — % 30 % Risk-free interest rate — % 2.69 % Expected dividends — % — % Expected term (years) 0 5.8 Weighted average fair value of options granted during period $ — $ 2.81 (1) No stock options were granted during the three months ended March 31, 2019.
Stock Option Activity under Plans	The following table summarizes the stock option activity under the Company’s equity incentive plans during the three months ended March 31, 2019 and 2018 , respectively. Number of Shares Weighted- Average Exercise Price Per Share Number of Shares Weighted- Average Exercise Price Per Share 2019 2018 Outstanding – January 1, 864,330 $ 6.86 792,577 $ 6.41 Granted — — 154,011 8.20 Exercised — — (8,000 ) 3.48 Forfeited/Canceled (3,162 ) 8.49 (7,150 ) 6.47 Outstanding – March 31, 861,168 6.85 931,438 6.73 Options Exercisable – March 31, 708,643 $ 6.64 624,474 $ 6.32 Options Vested – March 31, 708,643 $ 6.64 624,474 $ 6.32
Additional Information Regarding Vested and Unvested Options Outstanding	The following table provides additional information regarding the vested and unvested options that were outstanding at March 31, 2019 . Options Outstanding as of March 31, 2019 Options Exercisable (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 2.20 18,003 $ 3.48 $4.00 – $4.99 16,000 — 4.34 2.05 16,000 4.34 $5.00– $5.99 15,000 — 5.30 4.22 15,000 5.30 $6.00– $6.99 454,868 41,619 6.61 5.25 454,868 6.58 $7.00-$8.90 204,772 110,906 7.63 7.67 204,772 7.34 708,643 152,525 $ 6.85 6.00 708,643 $ 6.64 (1) The weighted average remaining contractual life of the options that were exercisable as of March 31, 2019 was 5.49 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 March 31, 2019 and 2018 , and changes in the weighted average grant date fair values of the unvested options during the three months ended March 31, 2019 and 2018 , are set forth in the following table. For the three months ended March 31, 2019 2018 Number of Shares Subject to Options Weighted Average Grant Date Fair Value Per Share Number of Weighted Unvested at the beginning of the period 275,457 $ 2.79 255,348 $ 2.80 Granted — — 154,011 2.81 Vested (119,770 ) 2.82 (95,245 ) 2.88 Forfeited/Canceled (3,162 ) 2.89 (7,150 ) 2.66 Unvested at the end of the period 152,525 2.77 306,964 2.78
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 three months ended March 31, 2019 and 2018 . For the three months ended March 31, 2019 2018 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 115,031 $ 8.04 103,508 $ 7.33 Granted 105,896 8.71 75,417 8.19 Vested (49,120 ) 7.80 (52,351 ) 7.24 Forfeited (4,333 ) 9.28 (3,250 ) 8.08 Outstanding at the end of the period 167,474 $ 8.50 123,324 $ 7.87
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 March 31, 2019 , 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 2019 $ 121 $ 450 $ 571 2020 151 458 609 2021 44 327 371 2022 17 76 93 2023 and beyond 3 8 11 $ 336 $ 1,319 $ 1,655

Earnings Per Share ("EPS") (Tab

Earnings Per Share ("EPS") (Tables)	3 Months Ended
	Mar. 31, 2019
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 months ended March 31, 2019 and 2018 . (In thousands, except per share data) For the Three Months Ended March 31, 2019 2018 Basic EPS: Net income $ 882 $ 3,707 Less dividends on preferred stock — — Less dividends on common stock — — Less dividends on unvested shares — — Net income allocable to common shareholders $ 882 $ 3,707 Less earnings allocated to participating securities 60 17 Earnings allocated to common shareholders $ 822 $ 3,690 Weighted average common shares outstanding 21,824 23,156 Basic earnings per common share $ 0.04 $ 0.16 Diluted EPS: Earnings allocated to common shareholders $ 882 $ 3,707 Weighted average common shares outstanding 21,824 23,156 Add dilutive effects of restricted stock grants 136 110 Add dilutive effects for assumed conversion of Series A preferred stock 1,467 — Add dilutive effect for stock options 120 176 Weighted average diluted common shares outstanding 23,547 23,442 Diluted earnings per common share $ 0.04 $ 0.16 (1) The basic and diluted earnings per share amounts for the three months ended March 31, 2019 and 2018 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 March 31, 2019 2018 Stock options (1) 188,582 72,744 (1) Represents stock options that were excluded from the computation of diluted earnings per common share for the three months ended March 31, 2019 and 2018 as a result of the shares being “out-of-the-money.”

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2019
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss), net	Accumulated other comprehensive income (loss), net as of March 31, 2019 and December 31, 2018 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, 2017 $ (1,143 ) $ (1,143 ) Other comprehensive income before reclassifications, net of tax of $142 thousand (50 ) (50 ) Amounts reclassified from accumulated other comprehensive loss (1) 49 49 Other comprehensive loss, net of tax of $142 thousand (1 ) (1 ) Ending balance as of December 31, 2018 $ (1,144 ) $ (1,144 ) Other comprehensive income before reclassifications, net of tax of $154 thousand 367 367 Amounts reclassified from accumulated other comprehensive loss — — Other comprehensive income, net of tax of $154 thousand 367 367 Ending balance as of March 31, 2019 $ (777 ) $ (777 ) (1) 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)	3 Months Ended
	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Borrowings and Contractual Obligations	At March 31, 2019 and December 31, 2018 , our borrowings and contractual obligations consisted of the following: (Dollars in thousands) March 31, 2019 December 31, 2018 FHLB advances—short-term $ 40,000 $ 40,000 FHLB advances—long-term — — Total $ 40,000 $ 40,000
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 2.65% for the three months ended March 31, 2019 . Principal Amounts Interest Rate Maturity Dates (Dollars in thousands) 10,000 2.66 % May 28, 2019 10,000 2.65 % June 26, 2019 10,000 2.64 % July 15, 2019 10,000 2.63 % September 4, 2019

Business Segment Information (T

Business Segment Information (Tables)	3 Months Ended
	Mar. 31, 2019
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 months ended March 31, 2019 and 2018 . (Dollars in thousands) Commercial Other (1) Total Net interest income for the three months ended March 31, 2019 $ 12,284 $ (233 ) $ 12,051 2018 $ 11,601 $ 584 $ 12,185 Noninterest income for the three months ended March 31, 2019 $ 1,483 $ 7 $ 1,490 2018 $ 1,049 $ 6 $ 1,055 Segment Assets at: March 31, 2019 $ 1,398,165 $ 475 $ 1,398,640 December 31, 2018 $ 1,349,097 $ 241 $ 1,349,338 (1) Represents net interest income and noninterest income for PMAR and PMBC.

Regulatory Capital (Tables)

Regulatory Capital (Tables)	3 Months Ended
	Mar. 31, 2019
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 March 31, 2019 , as compared to the regulatory requirements applicable to it. 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 162,868 13.4 % 104,549 At least 8.625 $ 121,217 At least 10.0 Common Equity Tier 1 Capital to Risk Weighted Assets 151,004 12.5 % 62,124 At least 5.125 $ 78,791 At least 6.5 Tier 1 Capital to Risk Weighted Assets 151,004 12.5 % 80,306 At least 6.625 $ 96,973 At least 8.0 Tier 1 Capital to Average Assets 151,004 10.9 % 55,521 At least 4.0 $ 69,401 At least 5.0

Significant Accounting Polici_3

Significant Accounting Policies (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, liability	$ 10,545	$ 11,100
Operating right-of-use assets	$ 10,105	10,600
Cumulative adjustment from adoption of new accounting pronouncements			$ (207)	$ (97)
Retained earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative adjustment from adoption of new accounting pronouncements		$ 207	$ (207)	$ (97)

Fair Value Measurements - Addit

Fair Value Measurements - Additional Disclosures (Details)	3 Months Ended
	Mar. 31, 2019USD ($)shares
Fair Value Disclosures [Abstract]
Payments to acquire FHLB stock | $	$ 0
Number of FRBSF stock purchased (in shares)	0
Number of FHLB stock sold (in shares)	0
Number of FRBSF stock sold (in shares)	0

Fair Value Measurements - Asset

Fair Value Measurements - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	$ 29,421	$ 31,231
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	29,421	31,231
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	0	0
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	29,421	31,231
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	0	0
U.S. Treasury securities | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	1,990	2,980
U.S. Treasury securities | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
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]
Debt securities available for sale	1,990	2,980
U.S. Treasury securities | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	0	0
Commercial mortgage backed securities issued by U.S. Agencies | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	4,544	4,534
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]
Debt securities available for sale	0	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]
Debt securities available for sale	4,544	4,534
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]
Debt securities available for sale	0	0
Residential mortgage backed securities issued by U.S. agencies | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities available for sale	22,887	23,717
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]
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]
Debt securities available for sale	22,887	23,717
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]
Debt securities available for sale	$ 0	$ 0

Fair Value Measurements - Ass_2

Fair Value Measurements - Assets Measured at Fair Value on Nonrecurring Basis (Details) - Nonrecurring - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	$ 1,417	$ 5,490
Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	1,321	4,226
Other foreclosed assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	96	91
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	1,173
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	96	1,264
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	96	91
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	0	1,173
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	1,321	4,226
Level 3 | Impaired loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets on nonrecurring basis	1,321	4,226
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) $ in Thousands	Mar. 31, 2019USD ($)
Impaired loans | Third-Party Pricing | Level 3
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, fair value disclosure	$ 1,321

Fair Value Measurements - Fair

Fair Value Measurements - Fair Values and Related Carrying Amounts of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Carrying Value
Financial assets:
Cash and cash equivalents	$ 257,370	$ 187,718
Interest-bearing deposits with financial institutions	2,420	2,420
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	8,822	8,822
Loans, net	1,062,997	1,083,240
Accrued interest receivable	4,053	4,003
Financial liabilities:
Noninterest bearing deposits	364,083	340,406
Interest-bearing deposits	817,267	795,596
Borrowings	40,000	40,000
Junior subordinated debentures	17,527	17,527
Accrued interest payable	521	361
Total
Financial assets:
Cash and cash equivalents	257,370	187,718
Interest-bearing deposits with financial institutions	2,420	2,420
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	8,822	8,822
Loans, net	1,047,449	1,066,147
Accrued interest receivable	4,053	4,003
Financial liabilities:
Noninterest bearing deposits	364,083	340,406
Interest-bearing deposits	816,899	794,321
Borrowings	40,003	39,976
Junior subordinated debentures	17,527	17,527
Accrued interest payable	521	361
Level 1
Financial assets:
Cash and cash equivalents	257,370	187,718
Interest-bearing deposits with financial institutions	2,420	2,420
Federal Reserve Bank of San Francisco and Federal Home Loan Bank stock	8,822	8,822
Loans, net	0	0
Accrued interest receivable	4,053	4,003
Financial liabilities:
Noninterest bearing deposits	364,083	340,406
Interest-bearing deposits	0	0
Borrowings	0	0
Junior subordinated debentures	0	0
Accrued interest payable	521	361
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	816,899	794,321
Borrowings	40,003	39,976
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	1,047,449	1,066,147
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	Mar. 31, 2019	Dec. 31, 2018
Available-for-sale Debt Securities [Abstract]
Amortized Cost	$ 29,901	$ 32,233
Gross Unrealized Gain	81	41
Gross Unrealized Loss	(561)	(1,043)
Estimated Fair Value	29,421	31,231
U.S. Treasury securities
Available-for-sale Debt Securities [Abstract]
Amortized Cost	1,999	2,999
Gross Unrealized Gain	0	0
Gross Unrealized Loss	(9)	(19)
Estimated Fair Value	1,990	2,980
Commercial mortgage backed securities issued by U.S. Agencies
Available-for-sale Debt Securities [Abstract]
Amortized Cost	4,465	4,495
Gross Unrealized Gain	79	40
Gross Unrealized Loss	0	(1)
Estimated Fair Value	4,544	4,534
Residential mortgage backed securities issued by U.S. agencies
Available-for-sale Debt Securities [Abstract]
Amortized Cost	23,437	24,739
Gross Unrealized Gain	2	1
Gross Unrealized Loss	(552)	(1,023)
Estimated Fair Value	$ 22,887	$ 23,717

Investments - Additional Inform

Investments - Additional Information (Details)	3 Months Ended
	Mar. 31, 2019USD ($)Investment	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)
Investments [Abstract]
Aggregate fair market value of securities pledged as collateral	$ 12,800,000		$ 18,200,000
Payments acquire debt securities	0	$ 0
Proceeds from sale of debt securities available for sale	0	2,100,000
Gain on sale of available for sales securities		53,000
Proceeds on the sale of equity security		4,800,000
Loss on sale of equity security	(5,000)
Other-than-temporary impairment loss, available for sale securities	$ 0	0
Number of investments in limited partnerships | Investment	3
Capital contributions, investments	$ 594,000	$ 89,000

Investments - Amortized Cost an

Investments - Amortized Cost and Estimated Fair Value by Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Securities available for sale, amortized cost
One year or less	$ 6,890	$ 7,874
Over one year through five years	13,298	13,466
Over five years through ten years	8,421	9,971
Over ten Years	1,292	922
Amortized Cost	29,901	32,233
Securities available for sale, estimated fair value
One year or less	6,750	7,663
Over one year through five years	13,086	12,934
Over five years through ten years	8,280	9,710
Over ten Years	1,305	924
Total	$ 29,421	$ 31,231
Weighted average yield
One year or less	1.49%	1.46%
Over one year through five years	1.65%	1.62%
Over five years through ten years	2.13%	2.22%
Over ten Years	3.26%	3.13%
Total	1.82%	1.81%

Investments - Securities in Con

Investments - Securities in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	$ 0	$ 1,360
Less than 12 months, Unrealized Loss	0	(4)
12 months or more, Fair Value	24,732	26,279
12 months or more, Unrealized Loss	(561)	(1,039)
Total, Fair Value	24,732	27,639
Total, Unrealized Loss	(561)	(1,043)
Cumulative adjustment from adoption of new accounting pronouncements		(207)	$ (97)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	0	0
Less than 12 months, Unrealized Loss	0	0
12 months or more, Fair Value	1,990	2,980
12 months or more, Unrealized Loss	(9)	(19)
Total, Fair Value	1,990	2,980
Total, Unrealized Loss	(9)	(19)
Commercial mortgage backed securities issued by U.S. Agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value		999
Less than 12 months, Unrealized Loss		(1)
12 months or more, Fair Value		0
12 months or more, Unrealized Loss		0
Total, Fair Value		999
Total, Unrealized Loss		(1)
Residential mortgage backed securities issued by U.S. Agencies
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, Fair Value	0	361
Less than 12 months, Unrealized Loss	0	(3)
12 months or more, Fair Value	22,742	23,299
12 months or more, Unrealized Loss	(552)	(1,020)
Total, Fair Value	22,742	23,660
Total, Unrealized Loss	$ (552)	$ (1,023)

Investments - Other Investments

Investments - Other Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Investments [Abstract]
Equity investments without readily determinable fair value	$ 1,834	$ 1,240

Loans and Allowance for Loan _3

Loans and Allowance for Loan and Lease Losses - Components of Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 1,071,903	$ 1,093,886
Deferred fee (income) costs, net	2,608	2,860
Allowance for loan and lease losses	(11,514)	(13,506)	$ (13,405)	$ (14,196)
Loans, net	$ 1,062,997	$ 1,083,240
Percentage of loan portfolio	100.00%	100.00%
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 448,021	$ 444,441
Allowance for loan and lease losses	$ (6,895)	$ (8,071)	(7,634)	(9,155)
Percentage of loan portfolio	41.80%	40.60%
Commercial real estate loans – owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 213,334	$ 211,645
Percentage of loan portfolio	19.90%	19.30%
Commercial real estate loans – all other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 220,106	$ 226,441
Percentage of loan portfolio	20.50%	20.70%
Residential mortgage loans – multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 91,856	$ 97,173
Percentage of loan portfolio	8.60%	8.90%
Residential mortgage loans – single family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 19,776	$ 21,176
Percentage of loan portfolio	1.80%	1.90%
Construction and land development loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 29,261	$ 38,496
Allowance for loan and lease losses	$ (295)	$ (426)	$ (888)	$ (650)
Percentage of loan portfolio	2.70%	3.50%
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 49,549	$ 54,514
Percentage of loan portfolio	4.60%	5.00%

Loans and Allowance for Loan _4

Loans and Allowance for Loan and Lease Losses - Additional Information (Details)	3 Months Ended
	Mar. 31, 2019USD ($)Loan	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable sold		$ 0
Loans and leases receivable purchased	$ 0	0
Period of loan loss history and industry loss factors used to determine historical losses	4 years
Loans greater than 90 Days and accruing	$ 0		$ 1,278,000
Impaired loans with no specific reserves	1,321,000		4,226,000
Impaired loans, impaired in prior year	1,300,000
Interest that would have been earned had impaired loans remained current in accordance with original terms	28,000	$ 187,000
Troubled debt restructurings, totals	$ 0
Number of loans restructured | Loan	0
Commercial real estate loans – all other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases receivable sold	$ 0
Loans greater than 90 Days and accruing	0		0
Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans greater than 90 Days and accruing	0		0
Impaired loans with no specific reserves	39,000		43,000
Federal Reserve Bank Of San Francisco | Commercial Real Estate Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged to secure borrowings obtained from the FHLB and FRB	228,000,000		228,000,000
Federal Reserve Bank Of San Francisco | Consumer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged to secure borrowings obtained from the FHLB and FRB			51,000,000
Federal Home Loan Bank of San Francisco
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans pledged to secure borrowings obtained from the FHLB and FRB	$ 847,000,000		$ 807,000,000

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
	Mar. 31, 2019	Mar. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 13,506	$ 14,196
Charge offs	(5,698)	(1,068)
Recoveries	406	277
Provision	3,300	0
Balance at end of period	11,514	13,405
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	8,071	9,155
Charge offs	(5,669)	(1,068)
Recoveries	401	272
Provision	4,092	(725)
Balance at end of period	6,895	7,634
Real Estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	3,643	2,906
Charge offs	0	0
Recoveries	0	0
Provision	(934)	349
Balance at end of period	2,709	3,255
Construction and Land Development
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	426	650
Charge offs	0	0
Recoveries	0	0
Provision	(131)	238
Balance at end of period	295	888
Consumer and Single Family Mortgages
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	1,290	1,043
Charge offs	(29)	0
Recoveries	5	5
Provision	220	64
Balance at end of period	1,486	1,112
Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	76	442
Charge offs	0	0
Recoveries	0	0
Provision	53	74
Balance at end of period	$ 129	$ 516

Loans and Allowance for Loan _6

Loans and Allowance for Loan and Lease Losses - Loan Balances and Related ALLL (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	$ 0	$ 0
Allowance for loans collectively evaluated for impairment	11,514	13,506
Total allowance	11,514	13,506	$ 13,405	$ 14,196
Loans individually evaluated for impairment	1,158	4,226
Loans collectively evaluated for impairment	1,070,745	1,089,660
Total loans	1,071,903	1,093,886
Commercial
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loans individually evaluated for impairment	0	0
Allowance for loans collectively evaluated for impairment	6,895	8,071
Total allowance	6,895	8,071	7,634	9,155
Loans individually evaluated for impairment	351	3,352
Loans collectively evaluated for impairment	447,670	441,089
Total loans	448,021	444,441
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	2,709	3,643
Total allowance	2,709	3,643	3,255	2,906
Loans individually evaluated for impairment	807	831
Loans collectively evaluated for impairment	524,489	534,428
Total loans	525,296	535,259
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	295	426
Total allowance	295	426	888	650
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	29,261	38,496
Total loans	29,261	38,496
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	1,486	1,290
Total allowance	1,486	1,290	1,112	1,043
Loans individually evaluated for impairment	0	43
Loans collectively evaluated for impairment	69,325	75,647
Total loans	69,325	75,690
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	129	76
Total allowance	129	76	$ 516	$ 442
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 ($)	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	$ 1,158,000	$ 8,822,000
Current	1,070,745,000	1,085,064,000
Total loans	1,071,903,000	1,093,886,000
Loans greater than 90 Days and Accruing	0	1,278,000
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	1,158,000	13,000
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	4,536,000
90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	4,273,000
Commercial loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	351,000	7,978,000
Current	447,670,000	436,463,000
Total loans	448,021,000	444,441,000
Loans greater than 90 Days and Accruing	0	1,278,000
Commercial loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	351,000	0
Commercial loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	3,705,000
Commercial loans | 90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	4,273,000
Commercial real estate loans – owner occupied
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	807,000	831,000
Current	212,527,000	210,814,000
Total loans	213,334,000	211,645,000
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	807,000	0
Commercial real estate loans – owner occupied | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past Due	0	831,000
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	0
Current	220,106,000	226,441,000
Total loans	220,106,000	226,441,000
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	0
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	91,856,000	97,173,000
Total loans	91,856,000	97,173,000
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	19,776,000	21,176,000
Total loans	19,776,000	21,176,000
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	29,261,000	38,496,000
Total loans	29,261,000	38,496,000
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	13,000
Current	49,549,000	54,501,000
Total loans	49,549,000	54,514,000
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	13,000
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	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	$ 1,321	$ 4,226
Commercial loans
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	475	3,352
Commercial real estate loans – owner occupied
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	807	831
Consumer
Financing Receivable Recorded Investment Nonaccrual Status [Line Items]
Nonaccrual loans	$ 39	$ 43

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	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 1,071,903	$ 1,093,886
Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	1,047,899	1,071,902
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	20,021	15,311
Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,983	6,673
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Gross loans	0	0
Commercial loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans	448,021	444,441
Commercial loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	429,800	428,287
Commercial loans | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	15,152	10,411
Commercial loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	3,069	5,743
Commercial real estate loans – owner occupied
Financing Receivable, Recorded Investment [Line Items]
Gross loans	213,334	211,645
Commercial real estate loans – owner occupied | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	207,659	205,914
Commercial real estate loans – owner occupied | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Gross loans	4,869	4,900
Commercial real estate loans – owner occupied | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	806	831
Commercial real estate loans – all other
Financing Receivable, Recorded Investment [Line Items]
Gross loans	220,106	226,441
Commercial real estate loans – all other | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	220,106	226,441
Residential mortgage loans – multi-family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	91,856	97,173
Residential mortgage loans – multi-family | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	91,856	97,173
Residential mortgage loans – single family
Financing Receivable, Recorded Investment [Line Items]
Gross loans	19,776	21,176
Residential mortgage loans – single family | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	19,776	21,176
Construction and Land Development
Financing Receivable, Recorded Investment [Line Items]
Gross loans	29,261	38,496
Construction and Land Development | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	29,261	38,496
Consumer loans
Financing Receivable, Recorded Investment [Line Items]
Gross loans	49,549	54,514
Consumer loans | Pass
Financing Receivable, Recorded Investment [Line Items]
Gross loans	49,441	54,415
Consumer loans | Substandard
Financing Receivable, Recorded Investment [Line Items]
Gross loans	$ 108	$ 99

Loans and Allowance for Loan_10

Loans and Allowance for Loan and Lease Losses - Nonaccrual Loans and Restructured Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Impaired loans:
Nonaccruing loans	$ 1,321	$ 4,226
Nonaccruing restructured loans	0	0
Accruing restructured loans	0	0
Total impaired loans	1,321	4,226
Impaired loans less than 90 days delinquent and included in total impaired loans
Impaired loans:
Total impaired loans	$ 1,321	$ 1,232

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
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Recorded investment, no allowance recorded	$ 1,321		$ 4,226
Recorded investment, with allowance recorded	0		0
Total impaired loans	1,321		4,226
Unpaid principal balance, no allowance recorded	1,628		5,506
Unpaid principal balance, with allowance recorded	0		0
Unpaid Principal Balance	1,628		5,506
Related allowance	0		0
Average balance, no allowance recorded	2,774	$ 6,363
Average balance, with allowance recorded	0	418
Average Balance	2,774	6,781
Interest income recognized, no allowance recorded	0	62
Interest income recognized, with allowance recorded	0	9
Interest Income Recognized	0	71
Commercial loans
Financing Receivable, Impaired [Line Items]
Recorded investment, no allowance recorded	475		3,352
Total impaired loans	475		3,352
Unpaid principal balance, no allowance recorded	654		4,516
Unpaid Principal Balance	654		4,516
Related allowance	0		0
Average balance, no allowance recorded	1,914	3,813
Average balance, with allowance recorded	0	418
Average Balance	1,914	4,231
Interest income recognized, no allowance recorded	0	62
Interest income recognized, with allowance recorded	0	9
Interest Income Recognized	0	71
Commercial real estate loans – owner occupied
Financing Receivable, Impaired [Line Items]
Recorded investment, no allowance recorded	807		831
Total impaired loans	807		831
Unpaid principal balance, no allowance recorded	912		925
Unpaid Principal Balance	912		925
Related allowance	0		0
Average balance, no allowance recorded	819	887
Average Balance	819	887
Interest income recognized, no allowance recorded	0	0
Interest Income Recognized	0	0
Commercial real estate loans – all other
Financing Receivable, Impaired [Line Items]
Average balance, no allowance recorded	0	1,523
Average Balance	0	1,523
Interest income recognized, no allowance recorded	0	0
Interest Income Recognized	0	0
Residential mortgage loans – single family
Financing Receivable, Impaired [Line Items]
Average balance, no allowance recorded	0	85
Average Balance	0	85
Interest income recognized, no allowance recorded	0	0
Interest Income Recognized	0	0
Consumer loans
Financing Receivable, Impaired [Line Items]
Recorded investment, no allowance recorded	39		43
Total impaired loans	39		43
Unpaid principal balance, no allowance recorded	62		65
Unpaid Principal Balance	62		65
Related allowance	0		$ 0
Average balance, no allowance recorded	41	55
Average Balance	41	55
Interest income recognized, no allowance recorded	0	0
Interest Income Recognized	$ 0	$ 0

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax provision	$ 376,000	$ 0
Valuation allowance		11,600,000
Unrecognized tax benefits	0
Accrued interest or penalties associated with unrecognized tax benefits	0		$ 0
Interest expense recognized	$ 0	$ 0

Leases - Schedule of Lease Cost

Leases - Schedule of Lease Cost (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)lease
Leases [Abstract]
Number of operating leases with multiple optional renewal periods | lease	2
Operating lease cost	$ 556
Short-term lease cost	40
Total lease cost	$ 596
Weighted-average remaining lease term—operating leases (in years)	5 years 9 months 3 days
Operating lease, weighted average discount rate, percent	1.68%

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Leases [Abstract]
Operating right-of-use assets	$ 10,105	$ 10,600
Operating lease liabilities	$ 10,545	$ 11,100

Leases - Schedule of Suppleme_2

Leases - Schedule of Supplemental Cash Flow Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Leases [Abstract]
Operating cash flows from operating leases (fixed payments)	$ 559
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 10,618

Leases - Schedule of Operating

Leases - Schedule of Operating Lease Liability Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Leases [Abstract]
Remainder of 2019	$ 1,716
2020	1,954
2021	1,695
2022	1,702
2023	1,708
2024 and beyond	2,285
Total	11,060
Less: Imputed interest	515
Operating lease liabilities	$ 10,545	$ 11,100

Stock-Based Employee Compensa_3

Stock-Based Employee Compensation Plans - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended
	May 31, 2013	May 31, 2010	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)			861,168	931,438	864,330	792,577
Options exercised (in shares)			0	8,000
Aggregate intrinsic value of options exercised			$ 0	$ 45
Fair value of options vested			337	275
Aggregate intrinsic values of options outstanding and exercisable			$ 719		$ 388
Nonvested awards, expected weighted average recognition period			2 years 3 months 10 days
Aggregate amounts of stock based compensation expense, net of taxes			$ 141	$ 179
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of accumulated shares vested (in shares)			357,517
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	1,067,136
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

Stock-Based Employee Compensa_4

Stock-Based Employee Compensation Plans - Weighted Average Assumptions (Details) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of options granted during period (in dollars per share)	$ 0	$ 2.81
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	0.00%	30.00%
Risk-free interest rate	0.00%	2.69%
Expected dividends	0.00%	0.00%
Expected term (years)	0 years	5 years 9 months
Weighted average fair value of options granted during period (in dollars per share)	$ 0	$ 2.81

Stock-Based Employee Compensa_5

Stock-Based Employee Compensation Plans - Stock Option Activity under Plans (Details) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Number of Shares
Outstanding, beginning of period (in shares)	864,330	792,577
Granted (in shares)	0	154,011
Exercised (in shares)	0	(8,000)
Forfeited/Canceled (in shares)	(3,162)	(7,150)
Outstanding, end of period (in shares)	861,168	931,438
Option Exercisable, end of period (in shares)	708,643	624,474
Options Vested, end of period (in shares)	708,643	624,474
Weighted- Average Exercise Price Per Share
Weighted Average Exercise Price, beginning of period (in dollars per share)	$ 6.86	$ 6.41
Granted (in dollars per share)	0	8.20
Exercised (in dollars per share)	0	3.48
Forfeited/Canceled (in dollars per share)	8.49	6.47
Weighted Average Exercise Price, end of period (in dollars per share)	6.85	6.73
Options Exercisable, end of period (in dollars per share)	6.64	6.32
Options Vested, end of period (in dollars per share)	$ 6.64	$ 6.32

Stock-Based Employee Compensa_6

Stock-Based Employee Compensation Plans - Vested and Unvested Options Outstanding (Details) - $ / shares	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, vested (in shares)	708,643		624,474
Options outstanding, unvested (in shares)	152,525	275,457	306,964	255,348
Options outstanding, weighted average exercise price (in dollars per share)	$ 6.85	$ 6.86	$ 6.73	$ 6.41
Options outstanding, weighted average remaining contractual life (years)	6 years
Options exercisable (in shares)	708,643		624,474
Options exercisable, weighted average exercise price (in dollars per share)	$ 6.64		$ 6.32
Options exercisable, weighted average remaining contractual life	5 years 5 months 25 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 2 months 13 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 20 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 2 months 18 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)	454,868
Options outstanding, unvested (in shares)	41,619
Options outstanding, weighted average exercise price (in dollars per share)	$ 6.61
Options outstanding, weighted average remaining contractual life (years)	5 years 3 months
Options exercisable (in shares)	454,868
Options exercisable, weighted average exercise price (in dollars per share)	$ 6.58
$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)	204,772
Options outstanding, unvested (in shares)	110,906
Options outstanding, weighted average exercise price (in dollars per share)	$ 7.63
Options outstanding, weighted average remaining contractual life (years)	7 years 8 months
Options exercisable (in shares)	204,772
Options exercisable, weighted average exercise price (in dollars per share)	$ 7.34

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	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Number of Shares Subject to Options
Unvested, beginning of period (in shares)	275,457	255,348
Granted (in shares)	0	154,011
Vested (in shares)	(119,770)	(95,245)
Forfeited/canceled (in shares)	(3,162)	(7,150)
Unvested, end of period (in shares)	152,525	306,964
Weighted Average Grant Date Fair Value Per Share
Unvested, beginning of period (in dollars per share)	$ 2.79	$ 2.80
Granted (in dollars per share)	0	2.81
Vested (in dollars per share)	2.82	2.88
Forfeited/canceled (in dollars per share)	2.89	2.66
Unvested, end of period (in dollars per share)	$ 2.77	$ 2.78

Stock-Based Employee Compensa_8

Stock-Based Employee Compensation Plans - Restricted Stock Activity (Details) - Restricted stock - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Number of Shares
Outstanding, at beginning of period (in shares)	115,031	103,508
Granted (in shares)	105,896	75,417
Vested (in shares)	(49,120)	(52,351)
Forfeited (in shares)	(4,333)	(3,250)
Outstanding, at end of period (in shares)	167,474	123,324
Average Grant Date Fair Value Per Share
Outstanding, at beginning of period (in dollars per share)	$ 8.04	$ 7.33
Granted (in dollars per share)	8.71	8.19
Vested (in dollars per share)	7.80	7.24
Forfeited (in dollars per share)	9.28	8.08
Outstanding, at end of period (in dollars per share)	$ 8.50	$ 7.87

Stock-Based Employee Compensa_9

Stock-Based Employee Compensation Plans - Compensation Expense Expected to be Recognized (Details) $ in Thousands	Mar. 31, 2019USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated Stock Based Compensation Expense for remainder of year 2019	$ 571
Estimated Stock Based Compensation Expense for year 2020	609
Estimated Stock Based Compensation Expense for year 2021	371
Estimated Stock Based Compensation Expense for year 2022	93
Estimated Stock Based Compensation Expense for year 2023 and Beyond	11
Estimated Stock Based Compensation Expense	1,655
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated Stock Based Compensation Expense for remainder of year 2019	121
Estimated Stock Based Compensation Expense for year 2020	151
Estimated Stock Based Compensation Expense for year 2021	44
Estimated Stock Based Compensation Expense for year 2022	17
Estimated Stock Based Compensation Expense for year 2023 and Beyond	3
Estimated Stock Based Compensation Expense	336
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated Stock Based Compensation Expense for remainder of year 2019	450
Estimated Stock Based Compensation Expense for year 2020	458
Estimated Stock Based Compensation Expense for year 2021	327
Estimated Stock Based Compensation Expense for year 2022	76
Estimated Stock Based Compensation Expense for year 2023 and Beyond	8
Estimated Stock Based Compensation Expense	$ 1,319

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
	Mar. 31, 2019	Mar. 31, 2018
Basic EPS:
Net income	$ 882	$ 3,707
Less dividends on preferred stock	0	0
Less dividends on common stock	0	0
Less dividends on unvested shares	0	0
Net income allocable to common shareholders	882	3,707
Less earnings allocated to participating securities	60	17
Earnings allocated to common shareholders	$ 822	$ 3,690
Weighted average common shares outstanding (in shares)	21,824,363	23,156,055
Basic earnings per common share (in dollars per share)	$ 0.04	$ 0.16
Diluted EPS:
Earnings allocated to common shareholders	$ 882	$ 3,707
Add dilutive effects for assumed conversion of Series A preferred stock (in shares)	1,467,000	0
Weighted average diluted common shares outstanding (in shares)	23,546,751	23,442,380
Diluted earnings per common share (in dollars per share)	$ 0.04	$ 0.16
Restricted stock
Diluted EPS:
Add dilutive effects of restricted stock grants and stock options (in shares)	136,000	110,000
Stock options
Diluted EPS:
Add dilutive effects of restricted stock grants and stock options (in shares)	120,000	176,000

Earnings Per Share ("EPS") - An

Earnings Per Share ("EPS") - Anti-dilutive Securities (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
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)	188,582	72,744

Shareholders' Equity - Accumula

Shareholders' Equity - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Jan. 01, 2019	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ 141,374	$ 112,876	$ 112,876
Other comprehensive income, net of tax	367	(298)
Ending Balance	142,616	116,395	141,374
Net gain on sale of securities available for sale	0	48
Cumulative adjustment from adoption of new accounting pronouncements			(207)		$ (97)
Unrealized Gain (Loss) on Securities Available-for-Sale, net of tax
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(1,144)	(1,143)	(1,143)
Other comprehensive income before reclassifications, net of tax	367		(50)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0		49
Other comprehensive income, net of tax	367		(1)
Ending Balance	(777)		(1,144)
Other comprehensive income before reclassifications, tax provision	154		142
Other comprehensive loss, tax	154
Accumulated Other Comprehensive Income (Loss), Net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(1,144)	(1,143)	(1,143)
Other comprehensive income before reclassifications, net of tax	367		(50)
Amounts reclassified from accumulated other comprehensive income (loss), net of tax	0		49
Other comprehensive income, net of tax	367	(298)	(1)
Ending Balance	(777)	(1,441)	(1,144)
Other comprehensive income before reclassifications, tax provision	154		142
Other comprehensive loss, tax	154
Net gain on sale of securities available for sale			48
Retained earnings
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(9,428)	(36,670)	(36,670)
Ending Balance	$ (8,753)	$ (33,060)	(9,428)
Cumulative adjustment from adoption of new accounting pronouncements			(207)	$ 207	$ (97)
Retained earnings | ASU 2016-01
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Cumulative adjustment from adoption of new accounting pronouncements			$ (97)

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Commitment And Contingencies [Line Items]
Loss reserve for unfunded loan commitments	$ 350,000	$ 350,000
Loans pledged as collateral to support FHLB borrowings	847,000,000
Unused borrowing capacity	357,000,000	365,000,000
Maximum borrowings outstanding at any month-end	40,000,000	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	297,000,000	$ 302,000,000
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	2.65%	2.54%

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Borrowings and Contractual Obligations (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
FHLB advances—short-term	$ 40,000,000	$ 40,000,000
FHLB advances—long-term	0	0
Total	$ 40,000,000	$ 40,000,000

Commitments and Contingencies_3

Commitments and Contingencies - Schedule of FHLB Borrowings (Details) - FHLB Advances	Mar. 31, 2019USD ($)
2.66% due May 2019
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	2.66%
2.65% due June 2019
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	2.65%
2.64% due July 2019
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	2.64%
2.63% due September 2019
Debt Instrument [Line Items]
Principal Amounts	$ 10,000,000
Interest Rate	2.63%

Business Segment Information -

Business Segment Information - Additional Information (Details)	3 Months Ended
	Mar. 31, 2019Segment
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
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Net interest income	$ 12,051	$ 12,185
Noninterest Income	1,490	1,055
Assets	1,398,640		$ 1,349,338
Operating segment | Commercial
Segment Reporting Information [Line Items]
Net interest income	12,284	11,601
Noninterest Income	1,483	1,049
Assets	1,398,165		1,349,097
Other
Segment Reporting Information [Line Items]
Net interest income	(233)	584
Noninterest Income	7	$ 6
Assets	$ 475		$ 241

Regulatory Capital - Actual Amo

Regulatory Capital - Actual Amount and Capital Ratios of Company and Bank (Details) - Bank $ in Thousands	Mar. 31, 2019USD ($)
Total Capital to Risk Weighted Assets
Total Capital to Risk Weighted Assets, Actual Capital Amount	$ 162,868
Total Capital to Risk Weighted Assets, Actual Capital Ratio	13.40%
Total Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 104,549
Total Capital to Risk Weighted Assets To be Categorized as Well-capitalized, Amount	121,217
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, Actual Capital Amount	$ 151,004
Tier 1 Capital to Risk Weighted Asset, Actual Capital Ratio	12.50%
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 80,306
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Amount	96,973
Tier 1 Capital to Average Assets
Tier 1 Capital to Average Assets, Actual Capital Amount	$ 151,004
Tier 1 Capital to Average Asset, Actual Capital Ratio	10.90%
Tier 1 Capital to Average Assets, For Capital Adequacy Purposes, Amount	$ 55,521
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Amount	$ 69,401
Minimum
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
Tier 1 Capital to Risk Weighted Assets
Tier 1 Capital to Risk Weighted Assets, Actual Capital Amount	$ 151,004
Tier 1 Capital to Risk Weighted Asset, Actual Capital Ratio	12.50%
Tier 1 Capital to Risk Weighted Assets, For Capital Adequacy Purposes, Amount	$ 62,124
Tier 1 Capital to Risk Weighted Assets, To be Categorized As Well Capitalized, Amount	$ 78,791
Common stock | Minimum
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%