OP Bancorp (OPBK) 10-Q 9 Nov 20 2020 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 06, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Trading Symbol	OPBK
Entity Registrant Name	OP BANCORP
Entity Central Index Key	0001722010
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Common Stock, Shares Outstanding		15,095,249
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	001-38437
Entity Tax Identification Number	81-3114676
Entity Address, Address Line One	1000 Wilshire Blvd.
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Los Angeles
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90017
City Area Code	213
Local Phone Number	892-9999
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	CA
Title of 12(b) Security	Common Stock, no par value
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes

CONSOLIDATED BALANCE SHEETS (un

CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
ASSETS
Cash and cash equivalents	$ 87,983	$ 86,036
Securities available for sale, at fair value	93,482	56,549
Other investments	10,002	9,176
Loans held for sale	41,430	2,100
Loans receivable, net of allowance of $14,164 at September 30, 2020 and $10,050 at December 31, 2019	1,058,626	980,088
Premises and equipment, net	4,756	5,226
Accrued interest receivable	4,968	3,166
Servicing assets	7,222	7,024
Company owned life insurance (COLI)	10,815	10,618
Deferred tax assets	3,911	3,189
Operating right-of-use assets	7,151	8,254
Other assets	9,475	8,094
Total assets	1,339,821	1,179,520
Deposits:
Noninterest bearing	488,815	294,281
Interest bearing:
Savings	5,382	4,753
Money market and others	334,599	291,865
Time deposits greater than $250,000	194,630	213,345
Other time deposits	146,738	216,467
Total deposits	1,170,164	1,020,711
Federal Home Loan Bank advances	10,000
Accrued interest payable	1,355	2,686
Operating lease liabilities	8,857	10,126
Other liabilities	7,896	5,421
Total liabilities	1,198,272	1,038,944
Shareholders’ equity
Preferred stock – no par value; 10,000,000 shares authorized; no shares issued or outstanding at September 30, 2020 and December 31, 2019
Common stock – no par value; 50,000,000 shares authorized; 15,126,270 and 15,703,276 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	79,600	86,381
Additional paid-in capital	8,382	7,524
Retained earnings	52,590	46,483
Accumulated other comprehensive income	977	188
Total shareholders’ equity	141,549	140,576
Total liabilities and shareholders' equity	$ 1,339,821	$ 1,179,520

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Loans receivable, allowance	$ 14,164	$ 10,050
Cash, FDIC insured amount	$ 250,000	$ 250,000
Preferred stock, par value
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares, issued	15,126,270	15,703,276
Common stock, shares, outstanding	15,126,270	15,703,276

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Interest income
Interest and fees on loans	$ 12,581	$ 14,278	$ 38,823	$ 41,725
Interest on investment securities	319	332	920	1,019
Other interest income	116	502	538	1,333
Total interest income	13,016	15,112	40,281	44,077
Interest expense
Interest on deposits	1,597	3,893	7,098	10,883
Total interest expense	1,597	3,893	7,098	10,883
Net interest income	11,419	11,219	33,183	33,194
Provision for loan losses	1,399	290	4,130	691
Net interest income after provision for loan losses	10,020	10,929	29,053	32,503
Noninterest income
Service charges on deposits	251	391	849	1,252
Loan servicing fees, net of amortization	583	243	1,489	853
Gain on sale of loans	1,813	1,714	3,904	4,379
Other income	374	384	1,137	2,428
Total noninterest income	3,021	2,732	7,379	8,912
Noninterest expense
Salaries and employee benefits	5,086	5,349	14,505	15,862
Occupancy and equipment	1,266	1,232	3,737	3,441
Data processing and communication	424	385	1,247	1,110
Professional fees	287	261	836	711
FDIC insurance and regulatory assessments	112	(21)	334	188
Promotion and advertising	81	182	405	543
Directors’ fees	147	228	603	680
Foundation donation and other contributions	360	402	935	1,169
Other expenses	224	406	926	1,151
Total noninterest expense	7,987	8,424	23,528	24,855
Income before income taxes	5,054	5,237	12,904	16,560
Income tax expense	1,459	1,237	3,594	3,984
Net income	$ 3,595	$ 4,000	$ 9,310	$ 12,576
Earnings per share - Basic	$ 0.23	$ 0.25	$ 0.60	$ 0.78
Earnings per share - Diluted	$ 0.23	$ 0.24	$ 0.60	$ 0.77
Other comprehensive income:
Change in unrealized income on securities available for sale	$ 57	$ 119	$ 1,120	$ 1,158
Tax effect	(17)	(35)	(331)	(342)
Total other comprehensive income	40	84	789	816
Comprehensive income	$ 3,635	$ 4,084	$ 10,099	$ 13,392

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2018	$ 129,787	$ 91,209	$ 6,249	$ 32,877	$ (548)
Beginning balance, shares at Dec. 31, 2018		15,860,306
Net income	4,740			4,740
Stock issued under stock-based compensation plans	292	$ 292
Stock issued under stock-based compensation plans, shares		118,162
Stock-based compensation	377		377
Repurchase of common stock	(2,381)	$ (2,381)
Repurchase of common stock, shares		(258,885)
Cash dividends declared	(793)			(793)
Change in unrealized income(loss) on securities available for sale net of reclassifications and tax effects	354				354
Ending balance at Mar. 31, 2019	132,376	$ 89,120	6,626	36,824	(194)
Ending balance, shares at Mar. 31, 2019		15,719,583
Beginning balance at Dec. 31, 2018	129,787	$ 91,209	6,249	32,877	(548)
Beginning balance, shares at Dec. 31, 2018		15,860,306
Net income	12,576
Ending balance at Sep. 30, 2019	137,593	$ 87,085	7,154	43,086	268
Ending balance, shares at Sep. 30, 2019		15,711,580
Beginning balance at Mar. 31, 2019	132,376	$ 89,120	6,626	36,824	(194)
Beginning balance, shares at Mar. 31, 2019		15,719,583
Net income	3,836			3,836
Stock issued under stock-based compensation plans, shares		77,809
Stock-based compensation	339		339
Repurchase of common stock	(665)	$ (665)
Repurchase of common stock, shares		(74,385)
Cash dividends declared	(782)			(782)
Change in unrealized income(loss) on securities available for sale net of reclassifications and tax effects	378				378
Ending balance at Jun. 30, 2019	135,482	$ 88,455	6,965	39,878	184
Ending balance, shares at Jun. 30, 2019		15,723,007
Net income	4,000			4,000
Stock issued under stock-based compensation plans	72	$ 72
Stock issued under stock-based compensation plans, shares		145,190
Stock-based compensation	189		189
Repurchase of common stock	(1,442)	$ (1,442)
Repurchase of common stock, shares		(156,617)
Cash dividends declared	(792)			(792)
Change in unrealized income(loss) on securities available for sale net of reclassifications and tax effects	84				84
Ending balance at Sep. 30, 2019	137,593	$ 87,085	7,154	43,086	268
Ending balance, shares at Sep. 30, 2019		15,711,580
Beginning balance at Dec. 31, 2019	140,576	$ 86,381	7,524	46,483	188
Beginning balance, shares at Dec. 31, 2019		15,703,276
Net income	3,299			3,299
Stock issued under stock-based compensation plans	305	$ 305
Stock issued under stock-based compensation plans, shares		130,046
Stock-based compensation	358		358
Repurchase of common stock	(6,264)	$ (6,264)
Repurchase of common stock, shares		(717,454)
Cash dividends declared	(1,087)			(1,087)
Change in unrealized income(loss) on securities available for sale net of reclassifications and tax effects	912				912
Ending balance at Mar. 31, 2020	138,099	$ 80,422	7,882	48,695	1,100
Ending balance, shares at Mar. 31, 2020		15,115,868
Beginning balance at Dec. 31, 2019	140,576	$ 86,381	7,524	46,483	188
Beginning balance, shares at Dec. 31, 2019		15,703,276
Net income	9,310
Ending balance at Sep. 30, 2020	141,549	$ 79,600	8,382	52,590	977
Ending balance, shares at Sep. 30, 2020		15,126,270
Beginning balance at Mar. 31, 2020	138,099	$ 80,422	7,882	48,695	1,100
Beginning balance, shares at Mar. 31, 2020		15,115,868
Net income	2,416			2,416
Stock issued under stock-based compensation plans, shares		22,189
Stock-based compensation	336		336
Repurchase of common stock	(497)	$ (497)
Repurchase of common stock, shares		(70,027)
Cash dividends declared	(1,055)			(1,055)
Change in unrealized income(loss) on securities available for sale net of reclassifications and tax effects	(163)				(163)
Ending balance at Jun. 30, 2020	139,136	$ 79,925	8,218	50,056	937
Ending balance, shares at Jun. 30, 2020		15,068,030
Net income	3,595			3,595
Stock issued under stock-based compensation plans, shares		116,356
Stock-based compensation	164		164
Repurchase of common stock	(325)	$ (325)
Repurchase of common stock, shares		(58,116)
Cash dividends declared	(1,061)			(1,061)
Change in unrealized income(loss) on securities available for sale net of reclassifications and tax effects	40				40
Ending balance at Sep. 30, 2020	$ 141,549	$ 79,600	$ 8,382	$ 52,590	$ 977
Ending balance, shares at Sep. 30, 2020		15,126,270

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net income	$ 9,310	$ 12,576
Adjustments to reconcile net income to net cash and cash equivalents provided by operating activities:
Provision for loan losses	4,130	691
Depreciation and amortization of premises and equipment	981	835
Amortization of net premiums on securities	337	183
Stock-based compensation	858	905
Gain on sales of loans	(3,904)	(4,379)
Earnings on company owned life insurance (COLI)	(197)	(1,445)
Origination of loans held for sale	(98,285)	(63,204)
Proceeds from sales of loans held for sale	61,457	66,415
Amortization of servicing assets	1,156	1,581
Amortization of low income housing partnerships	268	167
Net change in fair value of equity investment with readily determinable fair value	(141)	(137)
Net change in:
Accrued interest receivable	(1,802)	(73)
Deferred tax assets	(1,052)	1,313
Other assets	1,828	(38)
Accrued interest payable	(1,331)	826
Other liabilities	95	(103)
Net cash from operating activities	(26,292)	16,113
Cash flows from investing activities
Net change in loans receivable	(82,621)	(91,815)
Proceeds from matured, called, or paid-down securities available for sale	20,552	9,006
Proceeds from COLI		2,288
Purchase of securities available for sale	(56,703)	(4,989)
Purchase of equity investments		(1,000)
Purchase of FHLB stock	(685)	(776)
Purchase of premises and equipment, net	(511)	(1,569)
Investment in low income housing partnerships	(1,262)	(204)
Net cash from investing activities	(121,230)	(89,059)
Cash flows from financing activities
Net change in deposits	149,453	90,817
Cash received from stock option exercises	305	364
Proceeds from Federal Home Loan Bank advances	10,000
Repurchase of common stock	(7,086)	(4,488)
Cash dividend paid on common stock	(3,203)	(2,366)
Net cash from financing activities	149,469	84,327
Net change in cash and cash equivalents	1,947	11,381
Cash and cash equivalents at beginning of period	86,036	77,726
Cash and cash equivalents at end of period	87,983	89,107
Supplemental cash flow information
Income taxes	4,525	3,465
Interest	8,429	10,056
Supplemental noncash disclosure:
Transfer from loan receivable to OREO		1,817
The adoption of ASU 2016-02, leases (Topic 842) recognition right-of-use assets	7,151
New commitments to low income housing partnership investments	$ 3,477
ASU 2016-02
Supplemental noncash disclosure:
The adoption of ASU 2016-02, leases (Topic 842) recognition right-of-use assets		$ 8,959

Business Description

Business Description	9 Months Ended
	Sep. 30, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Business Description	Note 1. Business Description OP Bancorp (the “Company”) is a California corporation whose common stock is quoted on the Nasdaq Global Market under the ticker symbol, “OPBK.” The Company was formed to acquire 100% of the voting equity of Open Bank (the “Bank”) and commenced operation as a bank holding company on June 1, 2016. This transaction was treated as an internal reorganization as all shareholders of the Bank became shareholders of the Company. The Company has no operations other than ownership of the Bank. The Bank is a California state-chartered and FDIC-insured financial institution, which began its operations on June 10, 2005. Headquartered in downtown Los Angeles, California, the Company operates primarily in the traditional banking business arena that includes accepting deposits and making loans and investments. The Company’s primary deposit products are demand and time deposits, and the primary lending products are commercial business loans to small to medium sized businesses. The Company is operating with nine full service branches, eight of which are located in California, in Downtown Los Angeles, Los Angeles Fashion District, Los Angeles Koreatown, Gardena, Buena Park and Santa Clara. The Company opened a ninth full service branch in Carrollton, Texas in April, 2019. The Company also has four loan production offices in Atlanta, Georgia, Aurora, Colorado, and Lynwood and Seattle, Washington . On March 27, 2018, the Company completed its initial public offering of common stock, pursuant to which an aggregate of 2,300,000 shares of its common stock were sold at a public offering price of $11.00 per share, for aggregate net proceeds of approximately $22.6 million, after deducting underwriter discounts and commissions paid by it of approximately $1.7 million and other offering expenses of approximately $925,000.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2. Summary of Significant Accounting Policies Basis of Presentation: The accompanying unaudited consolidated financial statements and notes thereto of the Company have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) for Form 10-Q and conform to practices within the banking industry and include all of the information and disclosures required by accounting principles generally accepted in the United States of America (“GAAP”) for interim financial reporting. The accompanying unaudited consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments), which are necessary for a fair presentation of the financial results for the interim periods presented, including eliminating intercompany transactions and balances. The results of operations for the interim periods are not necessarily indicative of the results for the full year. These interim unaudited financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto as of and for the year ended December 31, 2019, included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. Use of Estimates: To prepare financial statements in conformity with GAAP, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. The Company could experience a material adverse effect on its business as a result of the impact of the novel coronavirus pandemic (“COVID-19”) and the resulting governmental actions to curtail its spread. It is at least reasonably possible that the estimates based on information which was available at the date of the financial statements will change in the near term due to the COVID-19 pandemic and that the effect of the change would be material to the financial statements, including the allowance for loan losses. The extent to which the COVID-19 pandemic will impact our estimates and assumptions is highly uncertain and we are unable to make an estimate, at this time. Concentration of Risk: Most of the Company’s customers are located within Los Angeles County and the surrounding area. The concentration of loans originated in this area may subject the Company to the risk of adverse impacts associated with economic, regulatory or other developments that could occur in Southern California. The Company has significant concentration in commercial real estate loans. The Company obtains what it believes to be sufficient collateral to secure potential losses. The extent and value of the collateral obtained varies based upon the details underlying each loan agreement. There have been no significant or material changes to the Company’s accounting policies during the nine months ended September 30, 2020, as compared to the Summary of Significant Accounting Policies as described in “Note 1 of the Notes to Consolidated Financial Statements” in the Company’s audited consolidated financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2019. Recent Accounting Pronouncements: In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13). The objective of ASU 2016-13 is to provide financial statement users with decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit. ASU 2016-13 includes provisions that require financial assets measured at amortized cost (such as loans and held-to-maturity (HTM) debt securities) be presented at the net amount expected to be collected. This will be accomplished through recognition of an estimate of all current expected credit losses. The estimate will include forecasted information for the timeframe that an entity is able to develop reasonable and supportable forecasts. This is a change from the current practice of recognizing incurred losses based on the probable initial recognition threshold under current GAAP. In addition, credit losses on available for sale (AFS) debt securities will be recorded through an allowance for credit losses rather than as a write-down. Under ASU 2016-13, an entity will be able to record reversals of credit losses in current period income when the estimate of credit losses declines, whereas current GAAP prohibits reflecting those improvements in current period earnings. In July 2019, FASB proposed the effective date delay to January 2020 for SEC filers, excluding smaller reporting companies (“SRCs”) and emerging growth companies (“EGCs”), and January 2023 for all other entities including SRCs and EGCs. On October 2019, FASB voted to approve the proposed delay. The Company expects its adoption date for ASU 2016-13 to be January 2023. ASU 2016-13 will be applied through a cumulative effect adjustment to retained earnings (modified-retrospective approach), except for debt securities for which an other-than-temporary impairment had been recognized before the effective date. A prospective transition approach is required for these debt securities. The Company is currently evaluating the effects of ASU 2016-13 on its financial statements and disclosures, including software solutions, data requirements and loss estimation methodologies. The company has engaged a third party advisor to develop a new expected loss model. While the effects cannot yet be quantified, the Company expects ASU 2016-13 to add complexity and costs to its current credit loss evaluation process. In March 2020, FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This ASU provides optional expedients and exceptions for contracts, hedging relationships, and other transactions that reference LIBOR or other reference rates expected to be discontinued because of reference rate reform. The ASU is effective for all entities as of March 12, 2020 through December 31, 2022. The Company is in the process of evaluating the provisions of this ASU and its effects on our consolidated financial statements. In April 2020, various regulatory agencies, including the Board of Governors of the Federal Reserve System and the Federal Deposit Insurance Corporation, issued a revised interagency statement encouraging financial institutions to work with customers affected by the COVID-19 pandemic and providing additional information regarding loan modifications. The revised interagency statement clarifies the interaction between the interagency statement issued on March 22, 2020 and the temporary relief provided by Section 4013 of the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”). Section 4013 allows financial institutions to suspend the requirements to classify certain loan modifications as troubled debt restructurings (“TDRs”). The revised statement also provides supervisory interpretations on past due and nonaccrual regulatory reporting of loan modification programs and regulatory capital. This interagency guidance and Section 4013 of the CARES Act are expected to reduce the number of TDRs that will be reported in future periods; however, the amount is indeterminable and will depend on future developments, which are highly uncertain and cannot be predicted, including the scope and duration of the pandemic and actions taken by governmental authorities and other third parties in response to the pandemic.

Securities

Securities	9 Months Ended
	Sep. 30, 2020
Investments Debt And Equity Securities [Abstract]
Securities	Note 3. Securities The following table summarizes the amortized cost, the corresponding amounts of gross unrealized gains and losses, and estimated fair value of securities available for sale as of September 30, 2020 and December 31, 2019: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value As of September 30, 2020: (Dollars in thousands) Available for sale: U.S. Government sponsored agency securities $ 2,000 $ 13 $ — $ 2,013 Mortgage-backed securities: residential 21,328 451 (11 ) 21,768 Collateralized mortgage obligations: residential 68,767 956 (22 ) 69,701 Total available for sale $ 92,095 $ 1,420 $ (33 ) $ 93,482 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value As of December 31, 2019: (Dollars in thousands) Available for sale: U.S. Government sponsored agency securities $ 5,000 $ 2 $ (1 ) $ 5,001 Mortgage-backed securities: residential 15,559 94 (12 ) 15,641 Collateralized mortgage obligations: residential 35,723 243 (59 ) 35,907 Total available for sale $ 56,282 $ 339 $ (72 ) $ 56,549 There were no sales of securities available for sale in the three or nine months ended September 30, 2020 or 2019. The amortized cost and estimated fair value of securities available for sale at September 30, 2020, by contractual maturity, are shown below. Securities without a contractual maturity are shown separately. Amortized Cost Fair Value As of September 30, 2020: (Dollars in thousands) Available for sale: Within one year $ 2,000 $ 2,013 Mortgage-backed securities: residential 21,328 21,768 Collateralized mortgage obligations: residential 68,767 69,701 Total available for sale $ 92,095 $ 93,482 Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. At each September 30, 2020 and December 31, 2019, there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of shareholders’ equity. The following table summarizes securities with unrealized losses as of September 30, 2020 and December 31, 2019, respectively, aggregated by length of time held in a continuous unrealized loss position: Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses As of September 30, 2020: (Dollars in thousands) Available for sale: Mortgage-backed securities: residential $ 3,143 $ (11 ) $ — $ — $ 3,143 $ (11 ) Collateralized mortgage obligations: residential 11,047 (22 ) — — 11,047 (22 ) Total available for sale $ 14,190 $ (33 ) $ — $ — $ 14,190 $ (33 ) Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses As of December 31, 2019: (Dollars in thousands) Available for sale: U.S. Government sponsored agency securities $ — $ — $ 1,999 $ (1 ) $ 1,999 $ (1 ) Mortgage-backed securities: residential — — 3,254 (12 ) 3,254 (12 ) Collateralized mortgage obligations: residential 8,878 (29 ) 3,658 (30 ) 12,536 (59 ) Total available for sale $ 8,878 $ (29 ) $ 8,911 $ (43 ) $ 17,789 $ (72 ) Management evaluates securities for other-than-temporary impairment (“OTTI”) on at least a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. For securities in an unrealized loss position, management considers the extent and duration of the unrealized loss, along with the financial condition and near-term prospects of the issuer. Management also assesses whether it intends to sell, or whether it is more likely than not that it will be required to sell, a security in an unrealized loss position before recovery of its amortized cost basis. If either of the criteria regarding intent or requirement to sell is met, the entire difference between amortized cost and fair value is recognized as impairment through earnings. For debt securities that do not meet the aforementioned criteria, the amount of impairment is split into two components, as follows: (i) OTTI related to credit loss, which must be recognized in the income statement, and (ii) OTTI related to other factors, which is recognized in other comprehensive income. The credit loss is defined as the difference between the present value of the cash flows expected to be collected and the amortized cost basis. As of September 30, 2020 , management believes no securities with unrealized losses were OTTI. There were no securities pledged as collateral as of September 30, 2020 or December 31, 2019. Other investments as of September 30, 2020 and December 31, 2019, consisted of the following: September 30, 2020 December 31, 2019 (Dollars in thousands) Federal Home Loan Bank (FHLB) stock $ 6,043 $ 5,358 Pacific Coast Bankers Bank (PCBB) stock 190 190 Mutual fund - CRA qualified 3,769 3,628 Total other investments $ 10,002 $ 9,176

Loans

Loans	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Loans	Note 4. Loans The composition of the loan portfolio was as follows at September 30, 2020 and December 31, 2019: September 30, 2020 December 31, 2019 (Dollars in thousands) Real estate: Commercial real estate $ 640,281 $ 630,668 SBA loans—real estate 138,339 122,373 Total real estate 778,620 753,041 SBA loans—non-real estate 75,339 (1) 9,895 Commercial and industrial 91,814 103,852 Home mortgage 125,656 120,686 Consumer 1,361 2,664 Gross loans receivable 1,072,790 990,138 Allowance for loan losses (14,164 ) (10,050 ) Loans receivable, net $ 1,058,626 $ 980,088 (1) At September 30, 2020, SBA loan - non-real estate balance includes SBA PPP loan balance of $64.6 million. No loans were outstanding to related parties as of September 30, 2020 or December 31, 2019. The activity in the allowance for loan losses for the three and nine months ended September 30, 2020 and 2019 was as follows: SBA Commercial SBA Loans Loans Non- Commercial Home Real Estate Real Estate Real Estate and Industrial Mortgage Consumer Total (Dollars in thousands) Three months ended September 30, 2020: Beginning balance $ 7,145 $ 1,346 $ 253 $ 1,920 $ 2,074 $ 26 $ 12,764 Provision for loan losses 994 412 18 (5 ) (15 ) (5 ) 1,399 Charge-offs — — — — — — — Recoveries — — — — — 1 1 Ending balance $ 8,139 $ 1,758 $ 271 $ 1,915 $ 2,059 $ 22 $ 14,164 Three months ended September 30, 2019: Beginning balance $ 5,554 $ 933 $ 119 $ 1,266 $ 1,609 $ 44 $ 9,525 Provision for loan losses 102 — (2 ) 171 26 (7 ) 290 Charge-offs — — — (175 ) — — (175 ) Recoveries — — — — — — — Ending balance $ 5,656 $ 933 $ 117 $ 1,262 $ 1,635 $ 37 $ 9,640 SBA Commercial SBA Loans Loans Non- Commercial Home Real Estate Real Estate Real Estate and Industrial Mortgage Consumer Total (Dollars in thousands) Nine months ended September 30, 2020: Beginning balance $ 6,000 $ 939 $ 121 $ 1,289 $ 1,667 $ 34 $ 10,050 Provision for loan losses 2,139 819 167 626 392 (13 ) 4,130 Charge-offs — — (45 ) — — — (45 ) Recoveries — — 28 — — 1 29 Ending balance $ 8,139 $ 1,758 $ 271 $ 1,915 $ 2,059 $ 22 $ 14,164 Nine months ended September 30, 2019: Beginning balance $ 4,805 $ 894 $ 505 $ 1,746 $ 1,653 $ 33 $ 9,636 Provision for loan losses 851 59 (388 ) 184 (18 ) 3 691 Charge-offs — (20 ) — (668 ) — — (688 ) Recoveries — — — — — 1 1 Ending balance $ 5,656 $ 933 $ 117 $ 1,262 $ 1,635 $ 37 $ 9,640 The following table presents the balance in the allowance for loan losses and the recorded investment in loans (including accrued interest receivable of $4.7 million and $2.9 million as of September 30, 2020 and December 31, 2019, respectively) by portfolio segment as of September 30, 2020 and December 31, 2019: Loans Individually Evaluated for Impairment Loans Collectively Evaluated for Impairment Total As of September 30, 2020: (Dollars in thousands) Allowance for loan losses: Commercial real estate $ — $ 8,139 $ 8,139 SBA loans—real estate — 1,758 1,758 SBA loans—non-real estate 59 212 271 Commercial and industrial 330 1,585 1,915 Home mortgage — 2,059 2,059 Consumer — 22 22 Total $ 389 $ 13,775 $ 14,164 Loans: Commercial real estate $ — $ 643,263 $ 643,263 SBA loans—real estate — 138,932 138,932 SBA loans—non-real estate 121 75,549 75,670 Commercial and industrial 330 91,777 92,107 Home mortgage — 126,143 126,143 Consumer — 1,365 1,365 Total $ 451 $ 1,077,029 $ 1,077,480 As of December 31, 2019: Allowance for loan losses: Commercial real estate $ — $ 6,000 $ 6,000 SBA loans—real estate — 939 939 SBA loans—non-real estate — 121 121 Commercial and industrial 333 956 1,289 Home mortgage — 1,667 1,667 Consumer — 34 34 Total $ 333 $ 9,717 $ 10,050 Loans: Commercial real estate $ — $ 632,205 $ 632,205 SBA loans—real estate 484 122,438 122,922 SBA loans—non-real estate 33 9,921 9,954 Commercial and industrial 333 103,774 104,107 Home mortgage — 121,161 121,161 Consumer — 2,671 2,671 Total $ 850 $ 992,170 $ 993,020 The following table presents information related to impaired loans by class of loans as of and for the three and nine m onths ended September 30 , 2020 and 201 9 . The difference between the unpaid principal balance (net of partial charge-offs) and the recorded investment in the loans is not considered to be material. The difference between interest income recognized and cash basis interest recognized was immaterial. Average Interest Recorded Allowance Recorded Income Investment Allocated Investment Recognized As of and for the three months ended September 30, 2020: (Dollars in thousands) With an allowance recorded: SBA loans—non-real estate $ 121 $ 59 $ 122 $ 2 Commercial and industrial 330 330 330 3 Total $ 451 $ 389 $ 452 $ 5 As of and for the three months ended September 30, 2019: With no related allowance recorded: SBA loans—real estate $ 488 $ — $ 493 $ — SBA loans—non-real estate 36 — 28 — With an allowance recorded: Commercial and industrial 336 336 337 5 Total $ 860 $ 336 $ 858 $ 5 Average Interest Recorded Allowance Recorded Income Investment Allocated Investment Recognized As of and for the nine months ended September 30, 2020: (Dollars in thousands) With an allowance recorded: SBA loans—non-real estate $ 121 $ 59 $ 124 $ 5 Commercial and industrial 330 330 331 10 Total $ 451 $ 389 $ 455 $ 15 As of and for the nine months ended September 30, 2019: With no related allowance recorded: SBA loans—real estate $ 488 $ — $ 505 $ — SBA loans—non-real estate 36 — 46 — With an allowance recorded: Commercial and industrial 336 336 339 15 Total $ 860 $ 336 $ 890 $ 15 There were no nonaccrual loans or loans past due greater than 90 days still accruing interest as of September 30, 2020. The following table presents the recorded investment in nonaccrual loans and loans past due greater than 90 days still accruing interest, by class of loans, as of December 31, 2019: Nonaccrual Loans >90 Days Past Due & Still Accruing Total (Dollars in thousands) As of December 31, 2019: SBA loans—real estate $ 484 $ — $ 484 SBA loans—non-real estate 33 — 33 Home mortgage 698 — 698 Total $ 1,215 $ — $ 1,215 Nonaccrual loans and loans past due greater than 90 days still accruing interest include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans. The following table represents the aging of the recorded investment in past due loans as of September 30, 2020 and December 31, 2019: 30-59 Days Past Due 60-89 Days Past Due > 90 Days Past Due Total Past Due Loans Not Past Due Total As of September 30, 2020: (Dollars in thousands) Commercial real estate $ — $ — $ — $ — $ 643,263 $ 643,263 SBA—real estate — — — — 138,932 138,932 SBA—non-real estate — — — — 75,670 75,670 Commercial and industrial — — — — 92,107 92,107 Home mortgage 600 — — 600 125,543 126,143 Consumer — — — — 1,365 1,365 $ 600 $ — $ — $ 600 $ 1,076,880 $ 1,077,480 As of December 31, 2019: Commercial real estate $ — $ — $ — $ — $ 632,205 $ 632,205 SBA—real estate 1,552 — 484 2,036 120,886 122,922 SBA—non-real estate 3 126 33 162 9,792 9,954 Commercial and industrial 364 — — 364 103,743 104,107 Home mortgage 1,980 — 454 2,434 118,727 121,161 Consumer — — — — 2,671 2,671 $ 3,899 $ 126 $ 971 $ 4,996 $ 988,024 $ 993,020 Troubled Debt Restructurings Modifications made were primarily extensions of existing payment modifications on loans previously identified as TDRs. There were no new loans identified as TDRs during the three and nine months ended September 30, 2020 or 2019, respectively. There were no payment defaults during the three and nine months ended September 30, 2019 of loans that had been modified as TDRs within the previous twelve months. The loan identified as a TDR at September 30, 2020 was placed in loan payment deferral program. Loan payment deferrals interagency guidance and Section 4013 of As of September 30, 2020, 130 loans with an aggregate balance of $173.0 million, including 51 home mortgage loans with an aggregate balance of $22.3 million, have resumed regular payments. The following table represents the loan deferment status change by loan type as of September 30, 2020: Loan Deferment Status Change by Loan Type Total deferments under Payment resumed the COVID-19 loan modifications or paid off Remaining deferments (Dollars in thousands) as of September 30, 2020 as of September 30, 2020 as of September 30, 2020 Loan Type Number of accounts Balance Number of accounts Balance Number of accounts Balance Loans, excluding home mortgage and consumer loans 103 199,728 79 150,677 24 49,050 Home Mortgage loans 69 30,205 51 22,344 18 7,862 Total 172 $ 229,933 130 $ 173,021 42 $ 56,912 Paycheck Protection Program loans The Paycheck Protection Program and Health Care Enhancement Act (“PPP / HCEA Act”), which was signed into law on April 24, 2020, authorized $310 billion of additional funding under the CARES Act for PPP loans to be issued by financial institutions through the SBA. As of September 30, 2020, the Company originated 978 loans with an aggregate loan balance of $66.3 million under the CARES Act and PPP / HCEA Act. The PPP loans are included in the SBA—non-real estate in the Company’s loan portfolio. Credit Quality Indicators Special Mention—Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the Company’s credit position at some future date. Substandard—Loans classified as substandard are inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Loans so classified have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Doubtful—Loans classified as doubtful have all the weaknesses inherent in those classified as substandard, with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Loans not meeting the criteria above that are analyzed individually as part of the above described process are considered to be pass-rated loans. As of September 30, 2020 and December 31, 2019, and based on the most recent analysis performed, the balance of loans categorized by risk category and class of loans is as follows: Pass Special Mention Substandard Doubtful Total As of September 30, 2020: (Dollars in thousands) Commercial real estate $ 643,263 $ — $ — $ — $ 643,263 SBA loans—real estate 137,402 756 774 — 138,932 SBA loans—non-real estate 75,537 12 121 — 75,670 Commercial and industrial 87,020 3,880 1,207 — 92,107 Home mortgage 126,143 — — — 126,143 Consumer 1,365 — — — 1,365 $ 1,070,730 $ 4,648 $ 2,102 (1) $ — $ 1,077,480 As of December 31, 2019: Commercial real estate $ 632,205 $ — $ — $ — $ 632,205 SBA loans—real estate 120,116 770 2,036 — 122,922 SBA loans—non-real estate 9,781 140 33 — 9,954 Commercial and industrial 98,509 4,901 697 — 104,107 Home mortgage 120,463 — 698 — 121,161 Consumer 2,671 — — — 2,671 $ 983,745 $ 5,811 $ 3,464 (1) $ — $ 993,020 (1) Substandard loans include the guaranteed portion of unsold SBA loans. The Company did not have guaranteed portion of unsold SBA loans as of September 30, 2020. The aggregate balance of substandard loans, net of the guaranteed portion of unsold SBA loans is $3.1 million as of December 31, 2019.

Leases

Leases	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Leases	Note 5. Leases The Company’s operating leases are real estate leases which are comprised of its headquarters and office facilities from nonaffiliated parties with remaining lease terms ranging from four months to nine years as of September 30, 2020 . Certain lease arrangements contain extension options which are typically around five years. As these extension options are not generally considered reasonably certain of exercise, they are not included in the lease term. At September 30, 2020 , operating right-of-use (“ROU”) assets and related liabilities were $7.2 million and $8.9 million, respectively. Short-term operating leases, which are defined as leases with term of twelve months or less, were not recognized as ROU assets with related lease liabilities as permitted under ASU No. 2016-02. The lease payments on short-term operating leases are immaterial. The Company did not have any finance leases at September 30, 2020 . Operating lease ROU assets represent the Company’s right to use the underlying asset during the lease term, and operating lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and operating lease liabilities are recognized at the lease commencement date based on the present value of the remaining lease payments using the Company’s incremental borrowing rate at the lease commencement date. Operating lease expense, which is comprised of amortization of the ROU asset and the implicit interest accreted on the operating lease liability, is recognized on a straight-line basis over the lease term and is recorded in occupancy and equipment expense in the consolidated statements of income. The Company’s occupancy and equipment expense also includes variable lease costs which is comprised of the Company's share of actual costs for utilities, common area maintenance, property taxes, and insurance that are not included in lease liabilities and are expensed as incurred. Variable lease costs can also include rent escalations based on changes to indices, such as the Consumer Price Index, where the Company estimates future rent increases and records the actual difference to variable costs. The table below summarized the Company’s total lease cost as of the associated period: Three Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Operating lease cost $ 443 $ 444 $ 1,331 $ 1,287 Variable lease cost 202 211 580 548 Total lease cost $ 645 $ 655 $ 1,911 $ 1,835 The table below summarizes supplemental information related to the Company’s operating leases, as of the associated period: (Dollars in thousands) September 30, 2020 December 31, 2019 Operating right-of-use assets $ 7,151 $ 8,254 Operating lease liabilities 8,857 10,126 Weighted average remaining lease term - operating leases 4.9 5.7 Weighted average discount rate - operating leases 2.98 % 2.98 % Three Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 505 $ 493 $ 1,500 $ 1,408 Rent expense was $645,000 and $655,000 for the three months ended September 30, 2020 and 2019, respectively, and $1.9 million and $1.8 million for the nine months ended September 30, 2020 and 2019, respectively. The table below summarizes the remaining contractually obligated lease payments and a reconciliation to the lease liability reported on the consolidated balance sheet as of September 30, 2020 and December 31, 2019: (Dollars in thousands) September 30, 2020 2020 remaining $ 506 2021 2,032 2022 2,015 2023 1,811 2024 1,700 Thereafter 1,632 Total lease payments 9,696 Discount to present value (839 ) Total lease liability $ 8,857 (Dollars in thousands) December 31, 2019 2020 $ 2,001 2021 2,032 2022 2,028 2023 1,816 2024 1,702 Thereafter 1,641 Total lease payments 11,220 Discount to present value (1,094 ) Total lease liability $ 10,126

Premises and Equipment

Premises and Equipment	9 Months Ended
	Sep. 30, 2020
Property Plant And Equipment [Abstract]
Premises and Equipment	Note 6. Premises and equipment The Company’s premises and equipment consisted of the following as of September 30, 2020 and December 31, 2019: September 30, 2020 December 31, 2019 (Dollars in thousands) Leasehold improvements $ 6,873 $ 6,571 Furniture and fixtures 3,288 3,174 Equipment and others 2,503 2,414 Total cost 12,664 12,159 Accumulated depreciation (7,908 ) (6,933 ) Net book value $ 4,756 $ 5,226 Total depreciation expense included in occupancy and equipment expenses was $326,000 and $297,000 for the three months ended September 30, 2020 and 2019, respectively, and $981,000 and $835,000 for the nine months ended September 30, 2020 and 2019, respectively.

Servicing Assets

Servicing Assets	9 Months Ended
	Sep. 30, 2020
Servicing Asset [Abstract]
Servicing Assets	Note 7. Servicing Assets Activity for loan servicing assets during the three and nine months ended September 30, 2020 and 2019 is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 (Dollars in thousands) Beginning balance $ 6,972 $ 6,996 $ 7,024 $ 6,987 Additions 585 552 1,354 1,553 Amortized to expense (335 ) (589 ) (1,156 ) (1,581 ) Ending balance $ 7,222 $ 6,959 $ 7,222 $ 6,959 There was no valuation allowance recorded against the carrying value of the servicing assets as of September 30, 2020 or 2019. The fair value of the servicing assets was $8.8 million at September 30, 2020, which was determined using discount rates ranging from 5.4% to 11.9% and prepayment speeds ranging from 14.5% to 14.9%, depending on the stratification of the specific assets. The fair value of the servicing assets was $8.3 million at September 30, 2019, which was determined using discount rates ranging from 5.7% to 11.9% and prepayment speeds ranging from 13.4% to 14.6%, depending on the stratification of the specific assets.

Deposits

Deposits	9 Months Ended
	Sep. 30, 2020
Deposits [Abstract]
Deposits	Note 8. Deposits The scheduled maturities of time deposits as of September 30, 2020 were as follows: September 30, 2020 (Dollars in thousands) 2020 remaining $ 102,084 2021 234,760 2022 2,621 2023 1,111 2024 584 Thereafter 208 Total $ 341,368 Deposits from principal officers, directors, and their affiliates as of September 30, 2020 and December 31, 2019 were $1.2 million and $1.6 million, respectively.

Borrowing Arrangements

Borrowing Arrangements	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Borrowing Arrangements	Note 9. Borrowing Arrangements As of September 30, 2020, the Company had $10.0 million in borrowings from the Federal Home Loan Bank (“FHLB”) of San Francisco which had 0% rate under the Zero-Rate Recovery Advance Program, FHLB’s pandemic relief initiatives. The Company had available borrowings from the following institutions as of September 30, 2020: September 30, 2020 (Dollars in thousands) Federal Home Loan Bank—San Francisco $ 244,938 Federal Reserve Bank 121,019 Pacific Coast Bankers Bank 50,000 Zions Bank 25,000 First Horizon Bank 15,000 Total $ 455,957 The Company has pledged approximately $913.3 million of loans as collateral for these lines of credit as of September 30, 2020.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Note 10. Income Taxes The Company’s income tax expense was $1.5 million and $1.2 million for the three months ended September 30, 2020 and 2019, respectively, and $3.6 million and $4.0 million for the nine months ended September 30, 2020 and 2019, respectively. The effective income tax rate was 28.9% and 23.6% for the three months ended September 30, 2020 and 2019, respectively, and 27.9% and 24.1% for the nine months ended September 30, 2020 and 2019, respectively. The Company is subject to U.S. Federal income tax as well as various state taxing jurisdictions. The Company is no longer subject to examination by Federal taxing authorities for tax years prior to 2016 and for state taxing authorities for tax years prior to 2015. There were no significant unrealized tax benefits recorded as of September 30, 2020 and 2019, and the Company does not expect any significant increase in unrealized tax benefits in the next twelve months.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 11. Commitments and Contingencies Off-Balance-Sheet Credit Risk The Company evaluates the creditworthiness of each borrower. Collateral, if deemed necessary by the Company upon the extension of credit, is obtained based on management’s evaluation of the borrower. Collateral for commercial and industrial loans may vary, but may include securities, accounts receivable, inventory, property, plant and equipment, and income producing commercial or other properties. The following table shows the distribution of undisbursed loan commitments as of the dates indicated: September 30, 2020 December 31, 2019 (Dollars in thousands) Commitments to extend credit $ 74,146 $ 66,153 Standby letter of credit 9,722 7,377 Commercial letter of credit 1,485 1,111 Total undisbursed loan commitments $ 85,353 $ 74,641 The majority of these off-balance sheet commitments have a variable interest rate. Management does not anticipate any material losses as a result of these transactions. I nvestment s in low income housing partnership : The Company invests i n qualified affordable housing partnership s . The following table shows the balance of the investments in low income housing partnership s and the total unfunded commitments related to the investments in low income housing partnership s as of the dates indicated: September 30, 2020 December 31, 2019 (Dollars in thousands) Investments in low income housing partnerships $ 4,928 $ 1,719 Unfunded commitments to fund investments for low income housing partnerships 2,362 70 These balances are reflected in the other assets and other liabilities lines on the consolidated balance sheets. The Company expects to finish fulfilling these commitments during the year ending 2034. The Company recognized amortization expense of $107,000 and $58,000, for the three months ended September 30, 2020 and 2019, respectively, and $268,000 and $167,000 for the nine months ended September 30, 2020 and 2019,

Stock-based Compensation

Stock-based Compensation	9 Months Ended
	Sep. 30, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-based Compensation	Note 12. Stock-based Compensation The Company has two stock-based compensation plans currently in effect as of September 30, 2020, as described further below. Total compensation cost charged against earnings for these plans was $164,000 and $189,000 for the three months ended September 30, 2020 and 2019, respectively, and $858,000 and $905,000, for the nine months ended September 30, 2020 and 2019, respectively. 2005 Plan The exercise prices of the options may not be less than 100% of the fair value of the Company’s common stock at the date of grant. The options, when granted, vest either immediately or ratably over five years from the date of the grant and expire after ten years if not exercised. The 2005 Plan expired in 2015 and no shares are available for grant. A summary of the transactions under the 2005 Plan for the nine months ended September 30, 2020 is as follows: Weighted Number of Average Aggregate Options Exercise Intrinsic Outstanding Price Value (Dollars in thousands, except per share data) Outstanding, as of January 1, 2020 155,000 $ 4.70 Options granted — — Options exercised (55,000 ) 1.15 Options forfeited — — Options expired — — Outstanding, as of September 30, 2020 100,000 5.77 $ 35 Fully vested and expected to vest 100,000 5.77 $ 35 Vested 100,000 $ 5.77 $ 35 Information related to the 2005 Plan for the periods indicated is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 (Dollars in thousands) Intrinsic value of options exercised $ — $ 206 $ 370 $ 593 Cash received from option exercises — 72 63 179 Tax benefit realized from option exercised — 5 17 5 The weighted average remaining contractual term of stock options outstanding under the 2005 Plan at September 30, 2020 was 2.89 years. The weighted average remaining contractual term of stock options that were exercisable at September 30, 2020 was 2.89 years. All of the stock options that are outstanding under the 2005 Plan were fully vested as of September 30, 2020. 2010 Plan The exercise prices of stock options granted under the plan may not be less than 100% of the fair value of the Company’s stock at the date of grant. The options, when granted, vest ratably over five years from the date of the grant and expire after ten years if not exercised. There were no stock options granted under the 2010 Plan during the nine months ended September 30, 2020 or 2019. Restricted stock awards issued under the 2010 Plan may or may not be subject to vesting provisions. A summary of stock options outstanding under the 2010 Plan for the nine months ended September 30, 2020 is as follows: Weighted Number of Average Aggregate Options Exercise Intrinsic Outstanding Price Value (Dollars in thousands, except per share data) Outstanding, as of January 1, 2020 365,000 $ 5.78 Options granted — — Options exercised (115,000 ) 2.11 Options forfeited — — Options expired — — Outstanding, as of September 30, 2020 250,000 7.12 $ 128 Fully vested and expected to vest 242,500 7.10 $ 128 Vested 220,000 $ 7.00 $ 128 Information related to stock options exercised under the 2010 Plan for the periods indicated is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 (Dollars in thousands) Intrinsic value of options exercised $ — $ — $ 608 $ 1,090 Cash received from option exercises — — 242 185 Tax benefit realized from option exercised — — 157 285 The weighted average remaining contractual term of stock options outstanding under the 2010 Plan at September 30, 2020 was 2.98 years. The weighted average remaining contractual term of stock options that were exercisable at September 30, 2020 was 2.91 years. A summary of the changes in the Company’s non-vested restricted stock awards under the 2010 Plan for the nine months ended September 30, 2020 is as follows: Shares Issued Weighted Average Grant Date Fair Value Aggregate Intrinsic Value (Dollars in thousands, except share data) Non-vested, as of January 1, 2020 294,500 $ 9.20 Awards granted 2,359 6.37 Awards vested (138,859 ) 5.92 Awards forfeited (1,500 ) 12.71 Non-vested, as of September 30, 2020 156,500 $ 12.03 $ 895 Information related to non-vested restricted stock awards under the 2010 Plan for the periods indicated follows: Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 (Dollars in thousands) Tax benefit(expense) realized from awards vested $ 24 $ 141 $ 21 $ 144 The 2010 Plan expired in August 2020, and no shares are available for grant as of September 30, 2020. The Company had approximately $686,000 of unrecognized compensation cost related to unvested stock options and restricted stock awards under the 2010 Plan as of September 30, 2020. The Company expects to recognize these costs over a weighted average period of 1.0 years.

Employee Benefit Plan

Employee Benefit Plan	9 Months Ended
	Sep. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plan	Note 13. Employee Benefit Plan The Company established a 401(k) profit sharing plan (the “401(k) Plan”), which is open to all eligible employees who are at least 18 years old and have completed 90 days of service. Each employee is allowed to contribute to the 401(k) Plan up to the maximum percentage allowable, not to exceed the limits of applicable IRS Code Sections. Each year, the Company may, in its discretion, make matching contributions to the 401(k) Plan. Total employer contributions to the 401(k) Plan amounted to $526,000 and $449,000 for the nine months ended September 30, 2020 and 2019, respectively.

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2020
Revenue From Contract With Customer [Abstract]
Revenue Recognition	Note 14. Revenue Recognition Accounting Standards Codification (“ASC”) 606, Revenue from Contracts with Customers (“ASC 606”), establishes principles for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the entity's contracts to provide goods or services to customers. The core principle requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those goods or services recognized as performance obligations are satisfied. The majority of the Company’s revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as loans, letters of credit, and investment securities, as well as revenue related to mortgage servicing activities and revenue on COLI, as these activities are subject to other GAAP discussed elsewhere within the disclosures. Descriptions of the Company’s revenue-generating activities that are within the scope of ASC 606, which are presented in the Company’s income statements as components of noninterest income are as follows: Service charges on deposits account that has insufficient funds to meet the payment of the draw (such as through written checks or ACH transactions), the Company returns the item rather than paying the balance of the draw for which the customer has inadequate funds. This typically happens when the customer has fairly sizable draws or multiple draws on an account that has inadequate funds to meet the demands for payment. Total revenues from service charges on deposits from overdraft and NSF fees for the nine months ended September 30 , 2020 and 201 9 , on a dollar and percentage of total revenue basis was $ , or % , and $ , or %, respectively . Wire transfer fee income: Other revenue streams that are recorded in other income in noninterest income include revenue generated from letters of credit and income on COLI. These revenue streams are either not material or out of scope of ASC 606.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 15. Fair Value of Financial Instruments Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure fair values: Level 1—Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. Level 2—Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data. Level 3—Significant unobservable inputs that reflect a company’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. The Company used the following methods and significant assumptions to estimate fair value: Securities Available for Sale Other Investment Impaired Loans Appraisals for collateral-dependent impaired loans are performed by certified general appraisers (for commercial properties) or certified residential appraisers (for residential properties) whose qualifications and licenses have been reviewed and verified by the Company. Once received, a member of the credit department reviews the assumptions and approaches utilized in the appraisal as well as the overall resulting fair value in comparison with independent data sources such as recent market data or industry-wide statistics. Assets and liabilities measured at fair value on a recurring basis as of September 30, 2020 and December 31, 2019 are summarized below: Fair Value Measure Using Quoted Significant Other Significant Prices in Observable Unobservable Total Active Markets Inputs Inputs Fair Value (Level 1) (Level 2) (Level 3) (Dollars in thousands) As of September 30, 2020 : U.S. Government sponsored agency securities $ 2,013 $ — $ 2,013 $ — Mortgage-backed securities - residential 21,768 — 21,768 — Collateralized mortgage obligations 69,701 — 69,701 — Other investments: Mutual fund - CRA qualified 3,769 3,769 — — As of December 31, 2019 : U.S. Government sponsored agency securities $ 5,001 $ — $ 5,001 $ — Mortgage-backed securities - residential 15,641 — 15,641 — Collateralized mortgage obligations 35,907 — 35,907 — Other investments: Mutual fund - CRA qualified 3,628 3,628 — — There were no transfers between Level 1 and Level 2 in the nine months ended September 30, 2020 or 2019. There were no assets or liabilities measured at fair value on a non-recurring basis as of September 30, 2020 or December 31, 2019. Financial Instruments Carrying Amount Level 1 Level 2 Level 3 Value As of September 30, 2020: (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 87,983 $ 87,983 $ — $ — $ 87,983 Loans held for sale 41,430 — 44,947 — 44,947 Loans receivable, net 1,058,626 — — 1,073,447 1,073,447 Accrued interest receivable 4,968 8 270 4,690 4,968 Other investments: FHLB and PCBB stock 6,233 N/A N/A N/A N/A Financial Liabilities: Deposit $ 1,170,164 $ — $ 1,170,846 $ — $ 1,170,846 Accrued interest payable 1,355 — 1,355 — 1,355 The carrying amounts and estimated fair values of financial instruments not carried at fair value as of December 31, 201 9 are as follows: Carrying Amount Level 1 Level 2 Level 3 Value As of December 31, 2019: (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 86,036 $ 86,036 $ — $ — $ 86,036 Loans held for sale 2,100 — 2,100 — 2,100 Loans receivable, net 980,088 — — 1,009,490 1,009,490 Accrued interest receivable 3,166 41 243 2,882 3,166 Other investments: FHLB and PCBB stock 5,548 N/A N/A N/A N/A Financial Liabilities: Deposit $ 1,020,711 $ — $ 1,021,571 $ — $ 1,021,571 Accrued interest payable 2,686 — 2,686 — 2,686

Regulatory Capital Matters

Regulatory Capital Matters	9 Months Ended
	Sep. 30, 2020
Regulatory Capital Requirements [Abstract]
Regulatory Capital Matters	Note 16. Regulatory Capital Matters Banks and bank holding companies are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations involve quantitative measures of assets, liabilities, and certain off-balance-sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can initiate regulatory action. Under the Basel III rules, the Bank must hold a capital conservation buffer above the adequately capitalized risk-based capital ratios. The capital conservation buffer was 0.625% in 2016 and increased 0.625% annually until 2019. As of Prompt corrective action regulations provide five classifications: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. If adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. At September 30, 2020 and December 31, 2019, the most recent regulatory notifications categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the institution’s category. Actual and required capital amounts (in thousands) and ratios, exclusive of the capital conservation buffer, are presented below as of September 30, 2020 and December 31, 2019: Required for Minimum Capital Adequacy To be Considered Actual Purposes "Well Capitalized" (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio As of September 30, 2020: Total capital (to risk-weighted assets) Consolidated $ 153,025 14.93 % N/A N/A N/A N/A Bank 148,830 14.51 % 82,031 8.00 % 102,538 10.00 % Tier 1 capital (to risk-weighted assets) Consolidated 140,192 13.67 % N/A N/A N/A N/A Bank 135,995 13.26 % 61,523 6.00 % 82,031 8.00 % Common equity Tier 1 capital (to risk-weighted assets) Consolidated 140,192 13.67 % N/A N/A N/A N/A Bank 135,995 13.26 % 46,142 4.50 % 66,650 6.50 % Tier 1 capital (to average assets) Consolidated 140,192 10.85 % N/A N/A N/A N/A Bank 135,995 10.52 % 51,703 4.00 % 64,629 5.00 % Required for Minimum Capital Adequacy To be Considered Actual Purposes "Well Capitalized" (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio As of December 31, 2019: Total capital (to risk-weighted assets) Consolidated $ 150,092 15.18 % N/A N/A N/A N/A Bank 147,820 14.96 % 79,069 8.00 % 98,836 10.00 % Tier 1 capital (to risk-weighted assets) Consolidated 139,975 14.16 % N/A N/A N/A N/A Bank 137,703 13.93 % 59,301 6.00 % 79,069 8.00 % Common equity Tier 1 capital (to risk-weighted assets) Consolidated 139,975 14.16 % N/A N/A N/A N/A Bank 137,703 13.93 % 44,476 4.50 % 64,243 6.50 % Tier 1 capital (to average assets) Consolidated 139,975 12.14 % N/A N/A N/A N/A Bank 137,703 11.95 % 46,103 4.00 % 57,629 5.00 %

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Note 17. Earnings per Share The two-class method is used in the calculation of basic and diluted earnings per share. Under the two-class method, earnings available to common shares are allocated between common shares and participating securities. The Company’s restricted stock awards are considered participating securities as the unvested awards have non-forfeitable rights to dividends, paid or unpaid, on unvested awards. The factors used in the earnings per share computation are as follows: Three Months Ended September 30, (Dollars in thousands, except share data) 2020 2019 Basic Net income $ 3,595 $ 4,000 Undistributed earnings allocated to participating securities (44 ) (81 ) Net income allocated to common shares 3,551 3,919 Weighted average common shares outstanding 15,148,833 15,768,654 Basic earnings per common share $ 0.23 $ 0.25 Diluted Net income allocated to common shares $ 3,551 $ 3,919 Weighted average common shares outstanding for basic earnings per common share 15,148,833 15,768,654 Add: Dilutive effects of assumed exercises of stock options 33,900 238,832 Average shares and dilutive potential common shares 15,182,733 16,007,486 Diluted earnings per common share $ 0.23 $ 0.24 Nine Months Ended September 30, (Dollars in thousands, except share data) 2020 2019 Basic Net income $ 9,310 $ 12,576 Undistributed earnings allocated to participating securities (154 ) (309 ) Net income allocated to common shares 9,156 12,267 Weighted average common shares outstanding 15,235,617 15,756,886 Basic earnings per common share $ 0.60 $ 0.78 Diluted Net income allocated to common shares $ 9,156 $ 12,267 Weighted average common shares outstanding for basic earnings per common share 15,235,617 15,756,886 Add: Dilutive effects of assumed exercises of stock options 48,573 235,129 Average shares and dilutive potential common shares 15,284,190 15,992,015 Diluted earnings per common share $ 0.60 $ 0.77 Stock options and restricted stock awards for 277,000 and 222,000 shares of common stock were not considered in computing diluted earnings per common share for the three and nine months ended September 30, 2020, respectively. No

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation: The accompanying unaudited consolidated financial statements and notes thereto of the Company have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) for Form 10-Q and conform to practices within the banking industry and include all of the information and disclosures required by accounting principles generally accepted in the United States of America (“GAAP”) for interim financial reporting. The accompanying unaudited consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments), which are necessary for a fair presentation of the financial results for the interim periods presented, including eliminating intercompany transactions and balances. The results of operations for the interim periods are not necessarily indicative of the results for the full year. These interim unaudited financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto as of and for the year ended December 31, 2019, included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019.
Use of Estimates	Use of Estimates: To prepare financial statements in conformity with GAAP, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. The Company could experience a material adverse effect on its business as a result of the impact of the novel coronavirus pandemic (“COVID-19”) and the resulting governmental actions to curtail its spread. It is at least reasonably possible that the estimates based on information which was available at the date of the financial statements will change in the near term due to the COVID-19 pandemic and that the effect of the change would be material to the financial statements, including the allowance for loan losses. The extent to which the COVID-19 pandemic will impact our estimates and assumptions is highly uncertain and we are unable to make an estimate, at this time.
Concentration of Risk	Concentration of Risk: Most of the Company’s customers are located within Los Angeles County and the surrounding area. The concentration of loans originated in this area may subject the Company to the risk of adverse impacts associated with economic, regulatory or other developments that could occur in Southern California. The Company has significant concentration in commercial real estate loans. The Company obtains what it believes to be sufficient collateral to secure potential losses. The extent and value of the collateral obtained varies based upon the details underlying each loan agreement. There have been no significant or material changes to the Company’s accounting policies during the nine months ended September 30, 2020, as compared to the Summary of Significant Accounting Policies as described in “Note 1 of the Notes to Consolidated Financial Statements” in the Company’s audited consolidated financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2019.
Recent Accounting Pronouncements	Recent Accounting Pronouncements: In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (ASU 2016-13). The objective of ASU 2016-13 is to provide financial statement users with decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit. ASU 2016-13 includes provisions that require financial assets measured at amortized cost (such as loans and held-to-maturity (HTM) debt securities) be presented at the net amount expected to be collected. This will be accomplished through recognition of an estimate of all current expected credit losses. The estimate will include forecasted information for the timeframe that an entity is able to develop reasonable and supportable forecasts. This is a change from the current practice of recognizing incurred losses based on the probable initial recognition threshold under current GAAP. In addition, credit losses on available for sale (AFS) debt securities will be recorded through an allowance for credit losses rather than as a write-down. Under ASU 2016-13, an entity will be able to record reversals of credit losses in current period income when the estimate of credit losses declines, whereas current GAAP prohibits reflecting those improvements in current period earnings. In July 2019, FASB proposed the effective date delay to January 2020 for SEC filers, excluding smaller reporting companies (“SRCs”) and emerging growth companies (“EGCs”), and January 2023 for all other entities including SRCs and EGCs. On October 2019, FASB voted to approve the proposed delay. The Company expects its adoption date for ASU 2016-13 to be January 2023. ASU 2016-13 will be applied through a cumulative effect adjustment to retained earnings (modified-retrospective approach), except for debt securities for which an other-than-temporary impairment had been recognized before the effective date. A prospective transition approach is required for these debt securities. The Company is currently evaluating the effects of ASU 2016-13 on its financial statements and disclosures, including software solutions, data requirements and loss estimation methodologies. The company has engaged a third party advisor to develop a new expected loss model. While the effects cannot yet be quantified, the Company expects ASU 2016-13 to add complexity and costs to its current credit loss evaluation process. In March 2020, FASB issued ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. This ASU provides optional expedients and exceptions for contracts, hedging relationships, and other transactions that reference LIBOR or other reference rates expected to be discontinued because of reference rate reform. The ASU is effective for all entities as of March 12, 2020 through December 31, 2022. The Company is in the process of evaluating the provisions of this ASU and its effects on our consolidated financial statements. In April 2020, various regulatory agencies, including the Board of Governors of the Federal Reserve System and the Federal Deposit Insurance Corporation, issued a revised interagency statement encouraging financial institutions to work with customers affected by the COVID-19 pandemic and providing additional information regarding loan modifications. The revised interagency statement clarifies the interaction between the interagency statement issued on March 22, 2020 and the temporary relief provided by Section 4013 of the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”). Section 4013 allows financial institutions to suspend the requirements to classify certain loan modifications as troubled debt restructurings (“TDRs”). The revised statement also provides supervisory interpretations on past due and nonaccrual regulatory reporting of loan modification programs and regulatory capital. This interagency guidance and Section 4013 of the CARES Act are expected to reduce the number of TDRs that will be reported in future periods; however, the amount is indeterminable and will depend on future developments, which are highly uncertain and cannot be predicted, including the scope and duration of the pandemic and actions taken by governmental authorities and other third parties in response to the pandemic.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2020
Investments Debt And Equity Securities [Abstract]
Schedule of Amortized Cost, Corresponding Amounts of Gross Unrealized Gains and Losses and Estimated Fair Value of Securities	The following table summarizes the amortized cost, the corresponding amounts of gross unrealized gains and losses, and estimated fair value of securities available for sale as of September 30, 2020 and December 31, 2019: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value As of September 30, 2020: (Dollars in thousands) Available for sale: U.S. Government sponsored agency securities $ 2,000 $ 13 $ — $ 2,013 Mortgage-backed securities: residential 21,328 451 (11 ) 21,768 Collateralized mortgage obligations: residential 68,767 956 (22 ) 69,701 Total available for sale $ 92,095 $ 1,420 $ (33 ) $ 93,482 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value As of December 31, 2019: (Dollars in thousands) Available for sale: U.S. Government sponsored agency securities $ 5,000 $ 2 $ (1 ) $ 5,001 Mortgage-backed securities: residential 15,559 94 (12 ) 15,641 Collateralized mortgage obligations: residential 35,723 243 (59 ) 35,907 Total available for sale $ 56,282 $ 339 $ (72 ) $ 56,549
Schedule of Amortized Cost and Estimated Fair Value of Securities Available for Sale	There were no sales of securities available for sale in the three or nine months ended September 30, 2020 or 2019. The amortized cost and estimated fair value of securities available for sale at September 30, 2020, by contractual maturity, are shown below. Securities without a contractual maturity are shown separately. Amortized Cost Fair Value As of September 30, 2020: (Dollars in thousands) Available for sale: Within one year $ 2,000 $ 2,013 Mortgage-backed securities: residential 21,328 21,768 Collateralized mortgage obligations: residential 68,767 69,701 Total available for sale $ 92,095 $ 93,482
Schedule of Securities With Unrealized Losses	The following table summarizes securities with unrealized losses as of September 30, 2020 and December 31, 2019, respectively, aggregated by length of time held in a continuous unrealized loss position: Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses As of September 30, 2020: (Dollars in thousands) Available for sale: Mortgage-backed securities: residential $ 3,143 $ (11 ) $ — $ — $ 3,143 $ (11 ) Collateralized mortgage obligations: residential 11,047 (22 ) — — 11,047 (22 ) Total available for sale $ 14,190 $ (33 ) $ — $ — $ 14,190 $ (33 ) Less Than 12 Months 12 Months or Longer Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses As of December 31, 2019: (Dollars in thousands) Available for sale: U.S. Government sponsored agency securities $ — $ — $ 1,999 $ (1 ) $ 1,999 $ (1 ) Mortgage-backed securities: residential — — 3,254 (12 ) 3,254 (12 ) Collateralized mortgage obligations: residential 8,878 (29 ) 3,658 (30 ) 12,536 (59 ) Total available for sale $ 8,878 $ (29 ) $ 8,911 $ (43 ) $ 17,789 $ (72 )
Schedule of Other Investments	Other investments as of September 30, 2020 and December 31, 2019, consisted of the following: September 30, 2020 December 31, 2019 (Dollars in thousands) Federal Home Loan Bank (FHLB) stock $ 6,043 $ 5,358 Pacific Coast Bankers Bank (PCBB) stock 190 190 Mutual fund - CRA qualified 3,769 3,628 Total other investments $ 10,002 $ 9,176

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2020
Receivables [Abstract]
Composition of Loan Portfolio	The composition of the loan portfolio was as follows at September 30, 2020 and December 31, 2019: September 30, 2020 December 31, 2019 (Dollars in thousands) Real estate: Commercial real estate $ 640,281 $ 630,668 SBA loans—real estate 138,339 122,373 Total real estate 778,620 753,041 SBA loans—non-real estate 75,339 (1) 9,895 Commercial and industrial 91,814 103,852 Home mortgage 125,656 120,686 Consumer 1,361 2,664 Gross loans receivable 1,072,790 990,138 Allowance for loan losses (14,164 ) (10,050 ) Loans receivable, net $ 1,058,626 $ 980,088 (1) At September 30, 2020, SBA loan - non-real estate balance includes SBA PPP loan balance of $64.6 million.
Schedule of Activity in Allowance for Loan Losses	The activity in the allowance for loan losses for the three and nine months ended September 30, 2020 and 2019 was as follows: SBA Commercial SBA Loans Loans Non- Commercial Home Real Estate Real Estate Real Estate and Industrial Mortgage Consumer Total (Dollars in thousands) Three months ended September 30, 2020: Beginning balance $ 7,145 $ 1,346 $ 253 $ 1,920 $ 2,074 $ 26 $ 12,764 Provision for loan losses 994 412 18 (5 ) (15 ) (5 ) 1,399 Charge-offs — — — — — — — Recoveries — — — — — 1 1 Ending balance $ 8,139 $ 1,758 $ 271 $ 1,915 $ 2,059 $ 22 $ 14,164 Three months ended September 30, 2019: Beginning balance $ 5,554 $ 933 $ 119 $ 1,266 $ 1,609 $ 44 $ 9,525 Provision for loan losses 102 — (2 ) 171 26 (7 ) 290 Charge-offs — — — (175 ) — — (175 ) Recoveries — — — — — — — Ending balance $ 5,656 $ 933 $ 117 $ 1,262 $ 1,635 $ 37 $ 9,640 SBA Commercial SBA Loans Loans Non- Commercial Home Real Estate Real Estate Real Estate and Industrial Mortgage Consumer Total (Dollars in thousands) Nine months ended September 30, 2020: Beginning balance $ 6,000 $ 939 $ 121 $ 1,289 $ 1,667 $ 34 $ 10,050 Provision for loan losses 2,139 819 167 626 392 (13 ) 4,130 Charge-offs — — (45 ) — — — (45 ) Recoveries — — 28 — — 1 29 Ending balance $ 8,139 $ 1,758 $ 271 $ 1,915 $ 2,059 $ 22 $ 14,164 Nine months ended September 30, 2019: Beginning balance $ 4,805 $ 894 $ 505 $ 1,746 $ 1,653 $ 33 $ 9,636 Provision for loan losses 851 59 (388 ) 184 (18 ) 3 691 Charge-offs — (20 ) — (668 ) — — (688 ) Recoveries — — — — — 1 1 Ending balance $ 5,656 $ 933 $ 117 $ 1,262 $ 1,635 $ 37 $ 9,640
Schedule of Allowance for Loan Losses and Recorded Investment in Loans (including accrued interest receivable) by Portfolio Segment	The following table presents the balance in the allowance for loan losses and the recorded investment in loans (including accrued interest receivable of $4.7 million and $2.9 million as of September 30, 2020 and December 31, 2019, respectively) by portfolio segment as of September 30, 2020 and December 31, 2019: Loans Individually Evaluated for Impairment Loans Collectively Evaluated for Impairment Total As of September 30, 2020: (Dollars in thousands) Allowance for loan losses: Commercial real estate $ — $ 8,139 $ 8,139 SBA loans—real estate — 1,758 1,758 SBA loans—non-real estate 59 212 271 Commercial and industrial 330 1,585 1,915 Home mortgage — 2,059 2,059 Consumer — 22 22 Total $ 389 $ 13,775 $ 14,164 Loans: Commercial real estate $ — $ 643,263 $ 643,263 SBA loans—real estate — 138,932 138,932 SBA loans—non-real estate 121 75,549 75,670 Commercial and industrial 330 91,777 92,107 Home mortgage — 126,143 126,143 Consumer — 1,365 1,365 Total $ 451 $ 1,077,029 $ 1,077,480 As of December 31, 2019: Allowance for loan losses: Commercial real estate $ — $ 6,000 $ 6,000 SBA loans—real estate — 939 939 SBA loans—non-real estate — 121 121 Commercial and industrial 333 956 1,289 Home mortgage — 1,667 1,667 Consumer — 34 34 Total $ 333 $ 9,717 $ 10,050 Loans: Commercial real estate $ — $ 632,205 $ 632,205 SBA loans—real estate 484 122,438 122,922 SBA loans—non-real estate 33 9,921 9,954 Commercial and industrial 333 103,774 104,107 Home mortgage — 121,161 121,161 Consumer — 2,671 2,671 Total $ 850 $ 992,170 $ 993,020
Schedule of Information Related to Impaired Loans by Class of Loans	The following table presents information related to impaired loans by class of loans as of and for the three and nine m onths ended September 30 , 2020 and 201 9 . The difference between the unpaid principal balance (net of partial charge-offs) and the recorded investment in the loans is not considered to be material. The difference between interest income recognized and cash basis interest recognized was immaterial. Average Interest Recorded Allowance Recorded Income Investment Allocated Investment Recognized As of and for the three months ended September 30, 2020: (Dollars in thousands) With an allowance recorded: SBA loans—non-real estate $ 121 $ 59 $ 122 $ 2 Commercial and industrial 330 330 330 3 Total $ 451 $ 389 $ 452 $ 5 As of and for the three months ended September 30, 2019: With no related allowance recorded: SBA loans—real estate $ 488 $ — $ 493 $ — SBA loans—non-real estate 36 — 28 — With an allowance recorded: Commercial and industrial 336 336 337 5 Total $ 860 $ 336 $ 858 $ 5 Average Interest Recorded Allowance Recorded Income Investment Allocated Investment Recognized As of and for the nine months ended September 30, 2020: (Dollars in thousands) With an allowance recorded: SBA loans—non-real estate $ 121 $ 59 $ 124 $ 5 Commercial and industrial 330 330 331 10 Total $ 451 $ 389 $ 455 $ 15 As of and for the nine months ended September 30, 2019: With no related allowance recorded: SBA loans—real estate $ 488 $ — $ 505 $ — SBA loans—non-real estate 36 — 46 — With an allowance recorded: Commercial and industrial 336 336 339 15 Total $ 860 $ 336 $ 890 $ 15
Schedule of Recorded Investment in Nonaccrual Loans and Loans Past Due Greater Than 90 Days Still Accruing Interest by Class of Loans	There were no nonaccrual loans or loans past due greater than 90 days still accruing interest as of September 30, 2020. The following table presents the recorded investment in nonaccrual loans and loans past due greater than 90 days still accruing interest, by class of loans, as of December 31, 2019: Nonaccrual Loans >90 Days Past Due & Still Accruing Total (Dollars in thousands) As of December 31, 2019: SBA loans—real estate $ 484 $ — $ 484 SBA loans—non-real estate 33 — 33 Home mortgage 698 — 698 Total $ 1,215 $ — $ 1,215
Schedule of Aging of Recorded Investment in Past Due Loans	The following table represents the aging of the recorded investment in past due loans as of September 30, 2020 and December 31, 2019: 30-59 Days Past Due 60-89 Days Past Due > 90 Days Past Due Total Past Due Loans Not Past Due Total As of September 30, 2020: (Dollars in thousands) Commercial real estate $ — $ — $ — $ — $ 643,263 $ 643,263 SBA—real estate — — — — 138,932 138,932 SBA—non-real estate — — — — 75,670 75,670 Commercial and industrial — — — — 92,107 92,107 Home mortgage 600 — — 600 125,543 126,143 Consumer — — — — 1,365 1,365 $ 600 $ — $ — $ 600 $ 1,076,880 $ 1,077,480 As of December 31, 2019: Commercial real estate $ — $ — $ — $ — $ 632,205 $ 632,205 SBA—real estate 1,552 — 484 2,036 120,886 122,922 SBA—non-real estate 3 126 33 162 9,792 9,954 Commercial and industrial 364 — — 364 103,743 104,107 Home mortgage 1,980 — 454 2,434 118,727 121,161 Consumer — — — — 2,671 2,671 $ 3,899 $ 126 $ 971 $ 4,996 $ 988,024 $ 993,020
Schedule of Loan Deferment Status Change by Loan Type	The following table represents the loan deferment status change by loan type as of September 30, 2020: Loan Deferment Status Change by Loan Type Total deferments under Payment resumed the COVID-19 loan modifications or paid off Remaining deferments (Dollars in thousands) as of September 30, 2020 as of September 30, 2020 as of September 30, 2020 Loan Type Number of accounts Balance Number of accounts Balance Number of accounts Balance Loans, excluding home mortgage and consumer loans 103 199,728 79 150,677 24 49,050 Home Mortgage loans 69 30,205 51 22,344 18 7,862 Total 172 $ 229,933 130 $ 173,021 42 $ 56,912
Schedule of Risk Category of Loans by Class of Loans	As of September 30, 2020 and December 31, 2019, and based on the most recent analysis performed, the balance of loans categorized by risk category and class of loans is as follows: Pass Special Mention Substandard Doubtful Total As of September 30, 2020: (Dollars in thousands) Commercial real estate $ 643,263 $ — $ — $ — $ 643,263 SBA loans—real estate 137,402 756 774 — 138,932 SBA loans—non-real estate 75,537 12 121 — 75,670 Commercial and industrial 87,020 3,880 1,207 — 92,107 Home mortgage 126,143 — — — 126,143 Consumer 1,365 — — — 1,365 $ 1,070,730 $ 4,648 $ 2,102 (1) $ — $ 1,077,480 As of December 31, 2019: Commercial real estate $ 632,205 $ — $ — $ — $ 632,205 SBA loans—real estate 120,116 770 2,036 — 122,922 SBA loans—non-real estate 9,781 140 33 — 9,954 Commercial and industrial 98,509 4,901 697 — 104,107 Home mortgage 120,463 — 698 — 121,161 Consumer 2,671 — — — 2,671 $ 983,745 $ 5,811 $ 3,464 (1) $ — $ 993,020 (1) Substandard loans include the guaranteed portion of unsold SBA loans. The Company did not have guaranteed portion of unsold SBA loans as of September 30, 2020. The aggregate balance of substandard loans, net of the guaranteed portion of unsold SBA loans is $3.1 million as of December 31, 2019.

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2020
Leases [Abstract]
Summary of Lease, Cost	The table below summarized the Company’s total lease cost as of the associated period: Three Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Operating lease cost $ 443 $ 444 $ 1,331 $ 1,287 Variable lease cost 202 211 580 548 Total lease cost $ 645 $ 655 $ 1,911 $ 1,835
Summary of Supplemental information Related to Operating Leases	The table below summarizes supplemental information related to the Company’s operating leases, as of the associated period: (Dollars in thousands) September 30, 2020 December 31, 2019 Operating right-of-use assets $ 7,151 $ 8,254 Operating lease liabilities 8,857 10,126 Weighted average remaining lease term - operating leases 4.9 5.7 Weighted average discount rate - operating leases 2.98 % 2.98 % Three Months Ended September 30, Nine Months Ended September 30, (Dollars in thousands) 2020 2019 2020 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 505 $ 493 $ 1,500 $ 1,408
Summary of Remaining Contractually Obligated Lease Payments and Reconciliation to Lease liability	The table below summarizes the remaining contractually obligated lease payments and a reconciliation to the lease liability reported on the consolidated balance sheet as of September 30, 2020 and December 31, 2019: (Dollars in thousands) September 30, 2020 2020 remaining $ 506 2021 2,032 2022 2,015 2023 1,811 2024 1,700 Thereafter 1,632 Total lease payments 9,696 Discount to present value (839 ) Total lease liability $ 8,857 (Dollars in thousands) December 31, 2019 2020 $ 2,001 2021 2,032 2022 2,028 2023 1,816 2024 1,702 Thereafter 1,641 Total lease payments 11,220 Discount to present value (1,094 ) Total lease liability $ 10,126

Premises and Equipment (Tables)

Premises and Equipment (Tables)	9 Months Ended
	Sep. 30, 2020
Property Plant And Equipment [Abstract]
Schedule of Premises and Equipment	The Company’s premises and equipment consisted of the following as of September 30, 2020 and December 31, 2019: September 30, 2020 December 31, 2019 (Dollars in thousands) Leasehold improvements $ 6,873 $ 6,571 Furniture and fixtures 3,288 3,174 Equipment and others 2,503 2,414 Total cost 12,664 12,159 Accumulated depreciation (7,908 ) (6,933 ) Net book value $ 4,756 $ 5,226

Servicing Assets (Tables)

Servicing Assets (Tables)	9 Months Ended
	Sep. 30, 2020
Servicing Asset [Abstract]
Schedule of Activity for Loan Servicing Assets	Activity for loan servicing assets during the three and nine months ended September 30, 2020 and 2019 is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 (Dollars in thousands) Beginning balance $ 6,972 $ 6,996 $ 7,024 $ 6,987 Additions 585 552 1,354 1,553 Amortized to expense (335 ) (589 ) (1,156 ) (1,581 ) Ending balance $ 7,222 $ 6,959 $ 7,222 $ 6,959

Deposits (Tables)

Deposits (Tables)	9 Months Ended
	Sep. 30, 2020
Deposits [Abstract]
Schedule of Maturities of Time Deposits	The scheduled maturities of time deposits as of September 30, 2020 were as follows: September 30, 2020 (Dollars in thousands) 2020 remaining $ 102,084 2021 234,760 2022 2,621 2023 1,111 2024 584 Thereafter 208 Total $ 341,368

Borrowing Arrangements (Tables)

Borrowing Arrangements (Tables)	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Summary of Borrowings Available to the Company from Institutions	The Company had available borrowings from the following institutions as of September 30, 2020: September 30, 2020 (Dollars in thousands) Federal Home Loan Bank—San Francisco $ 244,938 Federal Reserve Bank 121,019 Pacific Coast Bankers Bank 50,000 Zions Bank 25,000 First Horizon Bank 15,000 Total $ 455,957

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2020
Commitments And Contingencies Disclosure [Abstract]
Summary of Distribution of Undisbursed Loan Commitments	The following table shows the distribution of undisbursed loan commitments as of the dates indicated: September 30, 2020 December 31, 2019 (Dollars in thousands) Commitments to extend credit $ 74,146 $ 66,153 Standby letter of credit 9,722 7,377 Commercial letter of credit 1,485 1,111 Total undisbursed loan commitments $ 85,353 $ 74,641
Schedule of Balance and Total Unfunded Commitments Related to Investment in Low Income Housing Partnerships	The following table shows the balance of the investments in low income housing partnership s and the total unfunded commitments related to the investments in low income housing partnership s as of the dates indicated: September 30, 2020 December 31, 2019 (Dollars in thousands) Investments in low income housing partnerships $ 4,928 $ 1,719 Unfunded commitments to fund investments for low income housing partnerships 2,362 70

Stock-based Compensation (Table

Stock-based Compensation (Tables)	9 Months Ended
	Sep. 30, 2020
2005 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Stock-based Compensation Stock Options Activity	A summary of the transactions under the 2005 Plan for the nine months ended September 30, 2020 is as follows: Weighted Number of Average Aggregate Options Exercise Intrinsic Outstanding Price Value (Dollars in thousands, except per share data) Outstanding, as of January 1, 2020 155,000 $ 4.70 Options granted — — Options exercised (55,000 ) 1.15 Options forfeited — — Options expired — — Outstanding, as of September 30, 2020 100,000 5.77 $ 35 Fully vested and expected to vest 100,000 5.77 $ 35 Vested 100,000 $ 5.77 $ 35
Summary of Information Related to Stock Option Plan	Information related to the 2005 Plan for the periods indicated is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 (Dollars in thousands) Intrinsic value of options exercised $ — $ 206 $ 370 $ 593 Cash received from option exercises — 72 63 179 Tax benefit realized from option exercised — 5 17 5
2010 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Stock-based Compensation Stock Options Activity	A summary of stock options outstanding under the 2010 Plan for the nine months ended September 30, 2020 is as follows: Weighted Number of Average Aggregate Options Exercise Intrinsic Outstanding Price Value (Dollars in thousands, except per share data) Outstanding, as of January 1, 2020 365,000 $ 5.78 Options granted — — Options exercised (115,000 ) 2.11 Options forfeited — — Options expired — — Outstanding, as of September 30, 2020 250,000 7.12 $ 128 Fully vested and expected to vest 242,500 7.10 $ 128 Vested 220,000 $ 7.00 $ 128
Summary of Information Related to Stock Option Plan	Information related to stock options exercised under the 2010 Plan for the periods indicated is as follows: Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 (Dollars in thousands) Intrinsic value of options exercised $ — $ — $ 608 $ 1,090 Cash received from option exercises — — 242 185 Tax benefit realized from option exercised — — 157 285
Summary of Changes in Non-vested Restricted Stock Awards	A summary of the changes in the Company’s non-vested restricted stock awards under the 2010 Plan for the nine months ended September 30, 2020 is as follows: Shares Issued Weighted Average Grant Date Fair Value Aggregate Intrinsic Value (Dollars in thousands, except share data) Non-vested, as of January 1, 2020 294,500 $ 9.20 Awards granted 2,359 6.37 Awards vested (138,859 ) 5.92 Awards forfeited (1,500 ) 12.71 Non-vested, as of September 30, 2020 156,500 $ 12.03 $ 895
2010 Plan | Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Information Related to Non-vested Restricted Stock Awards	Information related to non-vested restricted stock awards under the 2010 Plan for the periods indicated follows: Three Months Ended September 30, Nine Months Ended September 30, 2020 2019 2020 2019 (Dollars in thousands) Tax benefit(expense) realized from awards vested $ 24 $ 141 $ 21 $ 144

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2020
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis	Assets and liabilities measured at fair value on a recurring basis as of September 30, 2020 and December 31, 2019 are summarized below: Fair Value Measure Using Quoted Significant Other Significant Prices in Observable Unobservable Total Active Markets Inputs Inputs Fair Value (Level 1) (Level 2) (Level 3) (Dollars in thousands) As of September 30, 2020 : U.S. Government sponsored agency securities $ 2,013 $ — $ 2,013 $ — Mortgage-backed securities - residential 21,768 — 21,768 — Collateralized mortgage obligations 69,701 — 69,701 — Other investments: Mutual fund - CRA qualified 3,769 3,769 — — As of December 31, 2019 : U.S. Government sponsored agency securities $ 5,001 $ — $ 5,001 $ — Mortgage-backed securities - residential 15,641 — 15,641 — Collateralized mortgage obligations 35,907 — 35,907 — Other investments: Mutual fund - CRA qualified 3,628 3,628 — —
Summary of Carrying Amounts and Estimated Fair Values of Financial Instruments Not Carried at Fair Value	Financial Instruments Carrying Amount Level 1 Level 2 Level 3 Value As of September 30, 2020: (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 87,983 $ 87,983 $ — $ — $ 87,983 Loans held for sale 41,430 — 44,947 — 44,947 Loans receivable, net 1,058,626 — — 1,073,447 1,073,447 Accrued interest receivable 4,968 8 270 4,690 4,968 Other investments: FHLB and PCBB stock 6,233 N/A N/A N/A N/A Financial Liabilities: Deposit $ 1,170,164 $ — $ 1,170,846 $ — $ 1,170,846 Accrued interest payable 1,355 — 1,355 — 1,355 The carrying amounts and estimated fair values of financial instruments not carried at fair value as of December 31, 201 9 are as follows: Carrying Amount Level 1 Level 2 Level 3 Value As of December 31, 2019: (Dollars in thousands) Financial Assets: Cash and cash equivalents $ 86,036 $ 86,036 $ — $ — $ 86,036 Loans held for sale 2,100 — 2,100 — 2,100 Loans receivable, net 980,088 — — 1,009,490 1,009,490 Accrued interest receivable 3,166 41 243 2,882 3,166 Other investments: FHLB and PCBB stock 5,548 N/A N/A N/A N/A Financial Liabilities: Deposit $ 1,020,711 $ — $ 1,021,571 $ — $ 1,021,571 Accrued interest payable 2,686 — 2,686 — 2,686

Regulatory Capital Matters (Tab

Regulatory Capital Matters (Tables)	9 Months Ended
	Sep. 30, 2020
Regulatory Capital Requirements [Abstract]
Summary of Actual and Required Capital Amounts and Ratios, Exclusive of Capital Conservation Buffer	Actual and required capital amounts (in thousands) and ratios, exclusive of the capital conservation buffer, are presented below as of September 30, 2020 and December 31, 2019: Required for Minimum Capital Adequacy To be Considered Actual Purposes "Well Capitalized" (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio As of September 30, 2020: Total capital (to risk-weighted assets) Consolidated $ 153,025 14.93 % N/A N/A N/A N/A Bank 148,830 14.51 % 82,031 8.00 % 102,538 10.00 % Tier 1 capital (to risk-weighted assets) Consolidated 140,192 13.67 % N/A N/A N/A N/A Bank 135,995 13.26 % 61,523 6.00 % 82,031 8.00 % Common equity Tier 1 capital (to risk-weighted assets) Consolidated 140,192 13.67 % N/A N/A N/A N/A Bank 135,995 13.26 % 46,142 4.50 % 66,650 6.50 % Tier 1 capital (to average assets) Consolidated 140,192 10.85 % N/A N/A N/A N/A Bank 135,995 10.52 % 51,703 4.00 % 64,629 5.00 % Required for Minimum Capital Adequacy To be Considered Actual Purposes "Well Capitalized" (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio As of December 31, 2019: Total capital (to risk-weighted assets) Consolidated $ 150,092 15.18 % N/A N/A N/A N/A Bank 147,820 14.96 % 79,069 8.00 % 98,836 10.00 % Tier 1 capital (to risk-weighted assets) Consolidated 139,975 14.16 % N/A N/A N/A N/A Bank 137,703 13.93 % 59,301 6.00 % 79,069 8.00 % Common equity Tier 1 capital (to risk-weighted assets) Consolidated 139,975 14.16 % N/A N/A N/A N/A Bank 137,703 13.93 % 44,476 4.50 % 64,243 6.50 % Tier 1 capital (to average assets) Consolidated 139,975 12.14 % N/A N/A N/A N/A Bank 137,703 11.95 % 46,103 4.00 % 57,629 5.00 %

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2020
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings Per Share	The factors used in the earnings per share computation are as follows: Three Months Ended September 30, (Dollars in thousands, except share data) 2020 2019 Basic Net income $ 3,595 $ 4,000 Undistributed earnings allocated to participating securities (44 ) (81 ) Net income allocated to common shares 3,551 3,919 Weighted average common shares outstanding 15,148,833 15,768,654 Basic earnings per common share $ 0.23 $ 0.25 Diluted Net income allocated to common shares $ 3,551 $ 3,919 Weighted average common shares outstanding for basic earnings per common share 15,148,833 15,768,654 Add: Dilutive effects of assumed exercises of stock options 33,900 238,832 Average shares and dilutive potential common shares 15,182,733 16,007,486 Diluted earnings per common share $ 0.23 $ 0.24 Nine Months Ended September 30, (Dollars in thousands, except share data) 2020 2019 Basic Net income $ 9,310 $ 12,576 Undistributed earnings allocated to participating securities (154 ) (309 ) Net income allocated to common shares 9,156 12,267 Weighted average common shares outstanding 15,235,617 15,756,886 Basic earnings per common share $ 0.60 $ 0.78 Diluted Net income allocated to common shares $ 9,156 $ 12,267 Weighted average common shares outstanding for basic earnings per common share 15,235,617 15,756,886 Add: Dilutive effects of assumed exercises of stock options 48,573 235,129 Average shares and dilutive potential common shares 15,284,190 15,992,015 Diluted earnings per common share $ 0.60 $ 0.77

Business Description - Addition

Business Description - Additional Information (Details)	Mar. 27, 2018USD ($)$ / sharesshares	Sep. 30, 2020BranchOffice
Business Description [Line Items]
Operations commenced date		Jun. 1, 2016
Number of full service branches | Branch		9
Number of loan production offices | Office		4
Common Stock
Business Description [Line Items]
Proceeds from issuance initial public offering	$ 22,600,000
Initial Public Offering | Common Stock
Business Description [Line Items]
Stock issued under stock offering, net of expenses, shares | shares	2,300,000
Stock price per share | $ / shares	$ 11
Payments for underwriting discounts and commissions	$ 1,700,000
Payments of stock offering expenses	$ 925,000
Open Bank
Business Description [Line Items]
Percentage of voting equity interests acquired		100.00%
Operations commenced date		Jun. 10, 2005

Securities - Schedule of Amorti

Securities - Schedule of Amortized Cost, Corresponding Amounts of Gross Unrealized Gains and Losses and Estimated Fair Value of Securities (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 92,095	$ 56,282
Gross Unrealized Gains	1,420	339
Gross Unrealized Losses	(33)	(72)
Fair Value	93,482	56,549
U.S. Government Sponsored Agency Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	2,000	5,000
Gross Unrealized Gains	13	2
Gross Unrealized Losses		(1)
Fair Value	2,013	5,001
Mortgage-backed Securities, Residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	21,328	15,559
Gross Unrealized Gains	451	94
Gross Unrealized Losses	(11)	(12)
Fair Value	21,768	15,641
Collateralized Mortgage Obligations, Residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	68,767	35,723
Gross Unrealized Gains	956	243
Gross Unrealized Losses	(22)	(59)
Fair Value	$ 69,701	$ 35,907

Securities - Additional Informa

Securities - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Proceeds from sale of available-for-sale securities	$ 0	$ 0	$ 0	$ 0
Other than temporary impairments unrealized losses on securities			0
Collateral Pledged
Schedule Of Available For Sale Securities [Line Items]
Number of securities pledged as collateral	$ 0		$ 0		$ 0
Stockholder's Equity | Credit Concentration Risk | Non-US Government and Agency Securities
Schedule Of Available For Sale Securities [Line Items]
Concentration risk, percentage			10.00%		10.00%

Securities - Schedule of Amor_2

Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities Available for Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Available for sale, Within one year, Amortized Cost	$ 2,000
Available for sale, Amortized Cost	92,095	$ 56,282
Available for sale, Within one year, Fair Value	2,013
Available for sale, Fair Value	93,482	56,549
Mortgage-backed Securities, Residential
Schedule Of Available For Sale Securities [Line Items]
Available for sale, Amortized Cost	21,328	15,559
Available for sale, Fair Value	21,768	15,641
Collateralized Mortgage Obligations, Residential
Schedule Of Available For Sale Securities [Line Items]
Available for sale, Amortized Cost	68,767	35,723
Available for sale, Fair Value	$ 69,701	$ 35,907

Securities - Schedule of Securi

Securities - Schedule of Securities With Unrealized Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Fair Value, Less Than 12 Months	$ 14,190	$ 8,878
Unrealized Losses, Less Than 12 Months	(33)	(29)
Fair Value, 12 Months or Longer		8,911
Unrealized Losses, 12 Months or Longer		(43)
Total Fair Value	14,190	17,789
Total Unrealized Losses	(33)	(72)
Mortgage-backed Securities, Residential
Schedule Of Available For Sale Securities [Line Items]
Fair Value, Less Than 12 Months	3,143
Unrealized Losses, Less Than 12 Months	(11)
Fair Value, 12 Months or Longer		3,254
Unrealized Losses, 12 Months or Longer		(12)
Total Fair Value	3,143	3,254
Total Unrealized Losses	(11)	(12)
Collateralized Mortgage Obligations, Residential
Schedule Of Available For Sale Securities [Line Items]
Fair Value, Less Than 12 Months	11,047	8,878
Unrealized Losses, Less Than 12 Months	(22)	(29)
Fair Value, 12 Months or Longer		3,658
Unrealized Losses, 12 Months or Longer		(30)
Total Fair Value	11,047	12,536
Total Unrealized Losses	$ (22)	(59)
U.S. Government Sponsored Agency Securities
Schedule Of Available For Sale Securities [Line Items]
Fair Value, 12 Months or Longer		1,999
Unrealized Losses, 12 Months or Longer		(1)
Total Fair Value		1,999
Total Unrealized Losses		$ (1)

Securities - Schedule of Other

Securities - Schedule of Other Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Investments Debt And Equity Securities [Abstract]
Federal Home Loan Bank (FHLB) stock	$ 6,043	$ 5,358
Pacific Coast Bankers Bank (PCBB) stock	190	190
Mutual fund - CRA qualified	3,769	3,628
Total other investments	$ 10,002	$ 9,176

Loans - Composition of Loan Por

Loans - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	$ 1,072,790	$ 990,138
Allowance for loan losses	(14,164)	(10,050)
Loans receivable, net	1,058,626	980,088
Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	778,620	753,041
Real Estate | Commercial Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	640,281	630,668
Real Estate | SBA Loans—Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	138,339	122,373
SBA Loans—Non-Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	75,339	9,895
Commercial and Industrial
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	91,814	103,852
Home Mortgage
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	125,656	120,686
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	$ 1,361	$ 2,664

Loans - Composition of Loan P_2

Loans - Composition of Loan Portfolio (Parenthetical) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	$ 1,072,790	$ 990,138
SBA Loans—Non-Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	75,339	$ 9,895
SBA Loans—Non-Real Estate | SBA PPP Loan
Loans And Leases Receivable Disclosure [Line Items]
Gross loans receivable	$ 64,600

Loans - Additional Information

Loans - Additional Information (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)Contractloan	Sep. 30, 2019USD ($)Contract	Sep. 30, 2020USD ($)Contractloan	Sep. 30, 2019USD ($)Contract	Apr. 24, 2020USD ($)	Dec. 31, 2019USD ($)
Loans And Leases Receivable Disclosure [Line Items]
Loans	$ 0		$ 0			$ 0
Accrued interest receivable	4,700,000		4,700,000			2,900,000
Nonaccrual	0		0			1,215,000
Loans >90 Days Past Due & Still Accruing	0		0
Recorded investment in troubled debt restructurings	330,000		330,000			333,000
Specific reserves to customers whose loan terms have been modified in TDRs	$ 330,000		$ 330,000			333,000
Loans identified as TDRs | Contract	0	0	0	0
Financing receivable, modifications, subsequent default, recorded investment	$ 0	$ 0	$ 0	$ 0
Loans aggregate balance	$ 1,077,480,000		$ 1,077,480,000			993,020,000
Paycheck Protection Program and Health Care Enhancement Act
Loans And Leases Receivable Disclosure [Line Items]
Number of loans originated | loan	978		978
Total loans funded	$ 66,300,000		$ 66,300,000
Additional funding under CARES act					$ 310,000,000,000
Home Mortgage
Loans And Leases Receivable Disclosure [Line Items]
Loans aggregate balance	126,143,000		126,143,000			$ 121,161,000
Payment Deferral
Loans And Leases Receivable Disclosure [Line Items]
Recorded investment in troubled debt restructurings	$ 229,933,000		$ 229,933,000
Number of processed loan deferments | loan	172		172
Number of loans | loan	130		130
Loans aggregate balance	$ 173,021,000		$ 173,021,000
Payment Deferral | Home Mortgage
Loans And Leases Receivable Disclosure [Line Items]
Recorded investment in troubled debt restructurings	$ 30,205,000		$ 30,205,000
Number of processed loan deferments | loan	69		69
Number of loans | loan	51		51
Loans aggregate balance	$ 22,344,000		$ 22,344,000

Loans - Schedule of Activity in

Loans - Schedule of Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	$ 12,764	$ 9,525	$ 10,050	$ 9,636
Provision for loan losses	1,399	290	4,130	691
Charge-offs		(175)	(45)	(688)
Recoveries	1		29	1
Ending balance	14,164	9,640	14,164	9,640
Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	7,145	5,554	6,000	4,805
Provision for loan losses	994	102	2,139	851
Ending balance	8,139	5,656	8,139	5,656
SBA Loans-Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	1,346	933	939	894
Provision for loan losses	412		819	59
Charge-offs				(20)
Ending balance	1,758	933	1,758	933
SBA Loans—Non-Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	253	119	121	505
Provision for loan losses	18	(2)	167	(388)
Charge-offs			(45)
Recoveries			28
Ending balance	271	117	271	117
Commercial and Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	1,920	1,266	1,289	1,746
Provision for loan losses	(5)	171	626	184
Charge-offs		(175)		(668)
Ending balance	1,915	1,262	1,915	1,262
Home Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	2,074	1,609	1,667	1,653
Provision for loan losses	(15)	26	392	(18)
Ending balance	2,059	1,635	2,059	1,635
Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	26	44	34	33
Provision for loan losses	(5)	(7)	(13)	3
Recoveries	1		1	1
Ending balance	$ 22	$ 37	$ 22	$ 37

Loans - Schedule of Allowance f

Loans - Schedule of Allowance for Loan Losses and Recorded Investment in Loans (including accrued interest receivable) by Portfolio Segment (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses Individually Evaluated for Impairment	$ 389		$ 333
Allowance for Loan Collectively Evaluated for Impairment	13,775		9,717
Total	14,164	$ 12,764	10,050	$ 9,640	$ 9,525	$ 9,636
Loans Individually Evaluated for Impairment	451		850
Loans Collectively Evaluated for Impairment	1,077,029		992,170
Total	1,077,480		993,020
Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Collectively Evaluated for Impairment	8,139		6,000
Total	8,139	7,145	6,000	5,656	5,554	4,805
Loans Collectively Evaluated for Impairment	643,263		632,205
Total	643,263		632,205
SBA Loans-Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Collectively Evaluated for Impairment	1,758		939
Total	1,758	1,346	939	933	933	894
Loans Individually Evaluated for Impairment			484
Loans Collectively Evaluated for Impairment	138,932		122,438
Total	138,932		122,922
SBA Loans—Non-Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses Individually Evaluated for Impairment	59
Allowance for Loan Collectively Evaluated for Impairment	212		121
Total	271	253	121	117	119	505
Loans Individually Evaluated for Impairment	121		33
Loans Collectively Evaluated for Impairment	75,549		9,921
Total	75,670		9,954
Commercial and Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan losses Individually Evaluated for Impairment	330		333
Allowance for Loan Collectively Evaluated for Impairment	1,585		956
Total	1,915	1,920	1,289	1,262	1,266	1,746
Loans Individually Evaluated for Impairment	330		333
Loans Collectively Evaluated for Impairment	91,777		103,774
Total	92,107		104,107
Home Mortgage
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Collectively Evaluated for Impairment	2,059		1,667
Total	2,059	2,074	1,667	1,635	1,609	1,653
Loans Collectively Evaluated for Impairment	126,143		121,161
Total	126,143		121,161
Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for Loan Collectively Evaluated for Impairment	22		34
Total	22	$ 26	34	$ 37	$ 44	$ 33
Loans Collectively Evaluated for Impairment	1,365		2,671
Total	$ 1,365		$ 2,671

Loans - Schedule of Information

Loans - Schedule of Information Related to Impaired Loans by Class of Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Financing Receivable Impaired [Line Items]
Recorded investment	$ 451	$ 860	$ 451	$ 860
Allowance Allocated	389	336	389	336
Average Recorded Investment	452	858	455	890
Interest Income Recognized	5	5	15	15
Commercial And Industrial
Financing Receivable Impaired [Line Items]
Recorded investment, With an allowance recorded	330	336	330	336
Allowance Allocated	330	336	330	336
Average Recorded Investment, With an allowance recorded	330	337	331	339
Interest Income Recognized, With an allowance recorded	3	5	10	15
SBA Loans—Real Estate
Financing Receivable Impaired [Line Items]
Recorded investment, With no related allowance recorded		488		488
Average Recorded Investment, With no related allowance recorded		493		505
SBA Loans—Non-Real Estate
Financing Receivable Impaired [Line Items]
Recorded investment, With no related allowance recorded		36		36
Average Recorded Investment, With no related allowance recorded		$ 28		$ 46
SBA Loans-Non-Real Estate
Financing Receivable Impaired [Line Items]
Recorded investment, With an allowance recorded	121		121
Allowance Allocated	59		59
Average Recorded Investment, With an allowance recorded	122		124
Interest Income Recognized, With an allowance recorded	$ 2		$ 5

Loans - Schedule of Recorded In

Loans - Schedule of Recorded Investment in Nonaccrual Loans and Loans Past Due Greater Than 90 Days Still Accruing Interest by Class of Loans (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment Past Due [Line Items]
Nonaccrual	$ 0	$ 1,215,000
Loans >90 Days Past Due & Still Accruing	$ 0
Total		1,215,000
SBA Loans—Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Nonaccrual		484,000
Total		484,000
SBA Loans-Non-Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Nonaccrual		33,000
Total		33,000
Home Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Nonaccrual		698,000
Total		$ 698,000

Loans - Schedule of Aging of Re

Loans - Schedule of Aging of Recorded Investment in Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans	$ 600	$ 4,996
Loans Not Past Due	1,076,880	988,024
Total	1,077,480	993,020
Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Loans Not Past Due	643,263	632,205
Total	643,263	632,205
SBA Loans-Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		2,036
Loans Not Past Due	138,932	120,886
Total	138,932	122,922
SBA Loans—Non-Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		162
Loans Not Past Due	75,670	9,792
Total	75,670	9,954
Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		364
Loans Not Past Due	92,107	103,743
Total	92,107	104,107
Home Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans	600	2,434
Loans Not Past Due	125,543	118,727
Total	126,143	121,161
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Loans Not Past Due	1,365	2,671
Total	1,365	2,671
30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans	600	3,899
30-59 Days Past Due | SBA Loans-Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		1,552
30-59 Days Past Due | SBA Loans—Non-Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		3
30-59 Days Past Due | Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		364
30-59 Days Past Due | Home Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans	$ 600	1,980
60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		126
60-89 Days Past Due | SBA Loans—Non-Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		126
> 90 Days Pass Due
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		971
> 90 Days Pass Due | SBA Loans-Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		484
> 90 Days Pass Due | SBA Loans—Non-Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		33
> 90 Days Pass Due | Home Mortgage
Financing Receivable Recorded Investment Past Due [Line Items]
Past Due Loans		$ 454

Loans - Schedule of Loan Deferm

Loans - Schedule of Loan Deferment Status Change by Loan Type (Details)	Sep. 30, 2020USD ($)loan	Dec. 31, 2019USD ($)
Financing Receivable Recorded Investment Past Due [Line Items]
Total deferments under the CARES Act, Balance	$ 330,000	$ 333,000
Payment resumed or paid off, Balance	1,077,480,000	993,020,000
Home Mortgage Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Payment resumed or paid off, Balance	$ 126,143,000	$ 121,161,000
Payment Deferral
Financing Receivable Recorded Investment Past Due [Line Items]
Total deferments under the COVID-19 loan modifications, Number of accounts | loan	172
Payment resumed or paid off, Number of accounts | loan	130
Remaining deferments, Number of accounts | loan	42
Total deferments under the CARES Act, Balance	$ 229,933,000
Payment resumed or paid off, Balance	173,021,000
Remaining deferments, Balance	$ 56,912,000
Payment Deferral | Loans, Excluding Home Mortgage and Consumer Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Total deferments under the COVID-19 loan modifications, Number of accounts | loan	103
Payment resumed or paid off, Number of accounts | loan	79
Remaining deferments, Number of accounts | loan	24
Total deferments under the CARES Act, Balance	$ 199,728,000
Payment resumed or paid off, Balance	150,677,000
Remaining deferments, Balance	$ 49,050,000
Payment Deferral | Home Mortgage Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Total deferments under the COVID-19 loan modifications, Number of accounts | loan	69
Payment resumed or paid off, Number of accounts | loan	51
Remaining deferments, Number of accounts | loan	18
Total deferments under the CARES Act, Balance	$ 30,205,000
Payment resumed or paid off, Balance	22,344,000
Remaining deferments, Balance	$ 7,862,000

Loans - Schedule of Risk Catego

Loans - Schedule of Risk Category of Loans by Class of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment [Line Items]
Loans	$ 1,077,480	$ 993,020
Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Loans	643,263	632,205
SBA Loans-Real Estate
Financing Receivable Recorded Investment [Line Items]
Loans	138,932	122,922
SBA Loans—Non-Real Estate
Financing Receivable Recorded Investment [Line Items]
Loans	75,670	9,954
Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Loans	92,107	104,107
Home Mortgage
Financing Receivable Recorded Investment [Line Items]
Loans	126,143	121,161
Consumer
Financing Receivable Recorded Investment [Line Items]
Loans	1,365	2,671
Pass
Financing Receivable Recorded Investment [Line Items]
Loans	1,070,730	983,745
Pass | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Loans	643,263	632,205
Pass | SBA Loans-Real Estate
Financing Receivable Recorded Investment [Line Items]
Loans	137,402	120,116
Pass | SBA Loans—Non-Real Estate
Financing Receivable Recorded Investment [Line Items]
Loans	75,537	9,781
Pass | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Loans	87,020	98,509
Pass | Home Mortgage
Financing Receivable Recorded Investment [Line Items]
Loans	126,143	120,463
Pass | Consumer
Financing Receivable Recorded Investment [Line Items]
Loans	1,365	2,671
Special Mention
Financing Receivable Recorded Investment [Line Items]
Loans	4,648	5,811
Special Mention | SBA Loans-Real Estate
Financing Receivable Recorded Investment [Line Items]
Loans	756	770
Special Mention | SBA Loans—Non-Real Estate
Financing Receivable Recorded Investment [Line Items]
Loans	12	140
Special Mention | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Loans	3,880	4,901
Substandard
Financing Receivable Recorded Investment [Line Items]
Loans	2,102	3,464
Substandard | SBA Loans-Real Estate
Financing Receivable Recorded Investment [Line Items]
Loans	774	2,036
Substandard | SBA Loans—Non-Real Estate
Financing Receivable Recorded Investment [Line Items]
Loans	121	33
Substandard | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Loans	$ 1,207	697
Substandard | Home Mortgage
Financing Receivable Recorded Investment [Line Items]
Loans		$ 698

Loans - Schedule of Risk Cate_2

Loans - Schedule of Risk Category of Loans by Class of Loans (Parenthetical) (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Substandard
Financing Receivable Recorded Investment Past Due [Line Items]
Loans, net of unsold guarantee	$ 0	$ 3,100,000

Leases - Additional Information

Leases - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Lessee Lease Description [Line Items]
Lease renewal term	5 years		5 years
Operating lease, existence of option to terminate [true false]			true
Operating lease, Option to terminate description			Certain lease arrangements contain extension options which are typically around five years.
Operating lease liabilities	$ 8,857,000		$ 8,857,000		$ 10,126,000
Operating right-of-use assets	7,151,000		7,151,000		$ 8,254,000
Operating lease rent expense	$ 645,000	$ 655,000	$ 1,900,000	$ 1,800,000
Minimum
Lessee Lease Description [Line Items]
Remaining operating lease terms	4 months		4 months
Maximum
Lessee Lease Description [Line Items]
Remaining operating lease terms	9 years		9 years

Leases - Summary of Lease Cost

Leases - Summary of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease cost	$ 443	$ 444	$ 1,331	$ 1,287
Variable lease cost	202	211	580	548
Total lease cost	$ 645	$ 655	$ 1,911	$ 1,835

Leases - Summary of Supplementa

Leases - Summary of Supplemental Information Related to Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Leases [Abstract]
Operating right-of-use assets	$ 7,151		$ 7,151		$ 8,254
Operating lease liabilities	$ 8,857		$ 8,857		$ 10,126
Weighted average remaining lease term - operating leases	4 years 10 months 24 days		4 years 10 months 24 days		5 years 8 months 12 days
Weighted average discount rate - operating leases	2.98%		2.98%		2.98%
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 505	$ 493	$ 1,500	$ 1,408

Leases - Summary of Remaining C

Leases - Summary of Remaining Contractually Obligated Lease Payments and Reconciliation to Lease Liability (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
2020 remaining	$ 506
2021	2,032	$ 2,001
2022	2,015	2,032
2023	1,811	2,028
2024	1,700	1,816
2024		1,702
Thereafter		1,641
Thereafter	1,632
Total lease payments	9,696	11,220
Discount to present value	(839)	(1,094)
Total lease liability	$ 8,857	$ 10,126

Leases - Summary of Remaining_2

Leases - Summary of Remaining Contractually Obligated Lease Payments and Reconciliation to Lease Liability (Prior Period) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
2020	$ 2,032	$ 2,001
2022	2,015	2,032
2023	1,811	2,028
2024	1,700	1,816
2024		1,702
Thereafter		1,641
Total lease payments	9,696	11,220
Discount to present value	(839)	(1,094)
Total lease liability	$ 8,857	$ 10,126

Premises and Equipment - Schedu

Premises and Equipment - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Total cost	$ 12,664	$ 12,159
Accumulated depreciation	(7,908)	(6,933)
Net book value	4,756	5,226
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total cost	6,873	6,571
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total cost	3,288	3,174
Equipment and Others
Property Plant And Equipment [Line Items]
Total cost	$ 2,503	$ 2,414

Premises and Equipment - Additi

Premises and Equipment - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Property Plant And Equipment [Abstract]
Depreciation expense	$ 326,000	$ 297,000	$ 981,000	$ 835,000

Servicing Assets - Schedule of

Servicing Assets - Schedule of Activity for Loan Servicing Assets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Servicing Asset [Abstract]
Beginning balance	$ 6,972	$ 6,996	$ 7,024	$ 6,987
Additions	585	552	1,354	1,553
Amortized to expense	(335)	(589)	(1,156)	(1,581)
Ending balance	$ 7,222	$ 6,959	$ 7,222	$ 6,959

Servicing Assets - Additional I

Servicing Assets - Additional Information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Servicing Assets At Amortized Value [Line Items]
Valuation allowance against carrying value of servicing assets	$ 0	$ 0
Servicing asset at fair value, amount	$ 8,800,000	$ 8,300,000
Minimum
Servicing Assets At Amortized Value [Line Items]
Fair value of servicing assets, discount rates	5.40%	5.70%
Fair value of servicing assets, prepayment speed	14.50%	13.40%
Maximum
Servicing Assets At Amortized Value [Line Items]
Fair value of servicing assets, discount rates	11.90%	11.90%
Fair value of servicing assets, prepayment speed	14.90%	14.60%

Deposits - Schedule of Maturiti

Deposits - Schedule of Maturities of Time Deposits (Details) $ in Thousands	Sep. 30, 2020USD ($)
Deposits [Abstract]
2020 remaining	$ 102,084
2021	234,760
2022	2,621
2023	1,111
2024	584
Thereafter	208
Total	$ 341,368

Deposits - Additional Informati

Deposits - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Principal Officers, Directors, and Affiliates
Time Deposits [Line Items]
Deposits from principal officers, directors, and their affiliates	$ 1.2	$ 1.6

Borrowing Arrangements - Additi

Borrowing Arrangements - Additional Information (Details)	Sep. 30, 2020USD ($)
Debt Disclosure [Abstract]
Federal home loan bank borrowings	$ 10,000,000
Letter of credit	67,000,000
Collateral pledged	$ 913,300,000

Borrowing Arrangements - Summar

Borrowing Arrangements - Summary of Borrowings Available to the Company from Institutions (Details) $ in Thousands	Sep. 30, 2020USD ($)
Debt Disclosure [Line Items]
Amount of borrowings	$ 455,957
Federal Home Loan Bank—San Francisco
Debt Disclosure [Line Items]
Amount of borrowings	244,938
Federal Reserve Bank
Debt Disclosure [Line Items]
Amount of borrowings	121,019
Pacific Coast Bankers Bank
Debt Disclosure [Line Items]
Amount of borrowings	50,000
Zions Bank
Debt Disclosure [Line Items]
Amount of borrowings	25,000
First Horizon Bank
Debt Disclosure [Line Items]
Amount of borrowings	$ 15,000

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income tax expense	$ 1,459,000	$ 1,237,000	$ 3,594,000	$ 3,984,000
Effective income tax rate	28.90%	23.60%	27.90%	24.10%
Unrealized tax benefits	$ 0	$ 0	$ 0	$ 0

Commitments and Contingencies -

Commitments and Contingencies - Summary of Distribution of Undisbursed Loan Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Undisbursed loan commitments	$ 85,353	$ 74,641
Commitments to Extend Credit
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Undisbursed loan commitments	74,146	66,153
Standby Letter of Credit
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Undisbursed loan commitments	9,722	7,377
Commercial Letter of Credit
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Undisbursed loan commitments	$ 1,485	$ 1,111

Commitments and Contingencies_2

Commitments and Contingencies - Balance and Total Unfunded Commitments Related to Investment in Low Income Housing Partnerships (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Investments in low income housing partnerships	$ 4,928	$ 1,719
Unfunded commitments to fund investments for low income housing partnerships	$ 2,362	$ 70

Commitments and Contingencies_3

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Commitments And Contingencies Disclosure [Abstract]
Recognized amortization expense	$ 107,000	$ 58,000	$ 268,000	$ 167,000
Recognized tax credits and other benefits	$ 99,000	$ 50,000	$ 248,000	$ 150,000

Stock-based Compensation - Addi

Stock-based Compensation - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2013	Dec. 31, 2012
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	$ 164,000	$ 189,000	$ 858,000	$ 905,000
2005 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation shares authorized under stock option plans	770,000		770,000
Percent of the fair value options granted			100.00%
Shares available for grant	0		0
Weighted average remaining contractual term stock options outstanding			2 years 10 months 20 days
Weighted average remaining contractual life for options exercisable			2 years 10 months 20 days
2005 Plan | Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			5 years
Stock options, when granted, expiration period			10 years
2010 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation shares authorized under stock option plans	0		0		2,500,000	1,350,000
Percent of the fair value options granted			100.00%
Weighted average remaining contractual term stock options outstanding			2 years 11 months 23 days
Weighted average remaining contractual life for options exercisable			2 years 10 months 28 days
Number of options outstanding, Granted			0	0
Unrecognized compensation costs related to unvested stock options	$ 686,000		$ 686,000
Unrecognized compensation costs weighted average period			1 year
2010 Plan | Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			5 years
Stock options, when granted, expiration period			10 years
2010 Plan | Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock awards granted			2,359	3,000
Weighted average fair value of Restricted shares granted			$ 6.37	$ 8.15

Stock-based Compensation - Summ

Stock-based Compensation - Summary of Stock-based Compensation Stock Options Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
2005 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options outstanding, Beginning of period	155,000
Number of options outstanding, Exercised	(55,000)
Number of options outstanding, Ending of period	100,000
Number of options outstanding, Full vested and expected to vest	100,000
Number of options outstanding, Vested	100,000
Weighted average exercise price, Outstanding beginning	$ 4.70
Weighted average exercise price, Exercised	1.15
Weighted average exercise price, Outstanding ending	5.77
Weighted average exercise price, Full vested and expected to vest	5.77
Weighted average exercise price, Vested	$ 5.77
Aggregate intrinsic value, Outstanding	$ 35
Aggregate intrinsic value, Fully vested and expected to vest	35
Aggregate intrinsic value, Vested	$ 35
2010 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options outstanding, Beginning of period	365,000
Number of options outstanding, Granted	0	0
Number of options outstanding, Exercised	(115,000)
Number of options outstanding, Ending of period	250,000
Number of options outstanding, Full vested and expected to vest	242,500
Number of options outstanding, Vested	220,000
Weighted average exercise price, Outstanding beginning	$ 5.78
Weighted average exercise price, Exercised	2.11
Weighted average exercise price, Outstanding ending	7.12
Weighted average exercise price, Full vested and expected to vest	7.10
Weighted average exercise price, Vested	$ 7
Aggregate intrinsic value, Outstanding	$ 128
Aggregate intrinsic value, Fully vested and expected to vest	128
Aggregate intrinsic value, Vested	$ 128

Stock-based Compensation - Su_2

Stock-based Compensation - Summary of Information Related to Stock Option Plan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cash received from option exercises			$ 305	$ 364
2005 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Intrinsic value of options exercised		$ 206	370	593
Cash received from option exercises		72	63	179
Tax benefit realized from option exercised		5	17	5
2010 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Intrinsic value of options exercised			608	1,090
Cash received from option exercises			242	185
Tax benefit realized from option exercised			157	285
2010 Plan | Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Tax benefit(expense) realized from awards vested	$ 24	$ 141	$ 21	$ 144

Stock-based Compensation - Su_3

Stock-based Compensation - Summary of Changes in Non-vested Restricted Stock Awards (Details) - 2010 Plan - Restricted Stock Awards - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares issued, Non-vested beginning of period	294,500
Shares issued, Awards granted	2,359	3,000
Shares issued, Awards vested	(138,859)
Shares issued, Awards forfeited	(1,500)
Shares issued, Non-vested end of period	156,500
Weighted average grant date fair value, Non-vested beginning of period	$ 9.20
Weighted average grant date fair value, Awards granted	6.37
Weighted average grant date fair value, Awards vested	5.92
Weighted average grant date fair value, Awards forfeited	12.71
Weighted average grant date fair value, Non-vested end of period	$ 12.03
Aggregate intrinsic value, Non-vested end of year	$ 895

Employee Benefit Plan - Additio

Employee Benefit Plan - Additional Information (Details) - 401 (k) Plan - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Defined Contribution Plan Disclosure [Line Items]
Eligibility age of employees for plan	18 years
Employee minimum service period	90 days
Employer contribution amount	$ 526,000	$ 449,000

Revenue Recognition - Additiona

Revenue Recognition - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Service charges on deposits	$ 251,000	$ 391,000	$ 849,000	$ 1,252,000
Noninterest income	$ 3,021,000	$ 2,732,000	7,379,000	8,912,000
Service Fees and Transaction-Based Fees Income
Disaggregation Of Revenue [Line Items]
Service charges on deposits			$ 529,000	$ 545,000
Percentage on revenue			1.30%	1.30%
Overdraft and NSF Fees Income
Disaggregation Of Revenue [Line Items]
Service charges on deposits			$ 320,000	$ 707,000
Percentage on revenue			0.80%	1.70%
Wire Transfer Fee Income
Disaggregation Of Revenue [Line Items]
Percentage on revenue			0.50%	0.60%
Noninterest income			$ 215,000	$ 243,000

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Other investments:
Mutual fund - CRA qualified	$ 3,769	$ 3,628
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
U.S. Government sponsored agency securities	2,013	5,001
Mortgage-backed securities - residential	21,768	15,641
Collateralized mortgage obligations	69,701	35,907
Other investments:
Mutual fund - CRA qualified	3,769	3,628
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets (Level 1)
Other investments:
Mutual fund - CRA qualified	3,769	3,628
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
U.S. Government sponsored agency securities	2,013	5,001
Mortgage-backed securities - residential	21,768	15,641
Collateralized mortgage obligations	$ 69,701	$ 35,907

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Additional Information (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value assets transfers between level 1 to level 2	$ 0		$ 0
Fair value liabilities transfers between level 1 to level 2	0		$ 0
Fair Value, Non-recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	0	$ 0
Liabilities measured at fair value	$ 0	$ 0

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Financial Assets:
Cash and cash equivalents	$ 87,983	$ 86,036
Loans held for sale	44,947	2,100
Loans receivable, net	1,073,447	1,009,490
Accrued interest receivable	4,968	3,166
Financial Liabilities:
Deposit	1,170,846	1,021,571
Accrued interest payable	1,355	2,686
Carrying Amount
Financial Assets:
Cash and cash equivalents	87,983	86,036
Loans held for sale	41,430	2,100
Loans receivable, net	1,058,626	980,088
Accrued interest receivable	4,968	3,166
Other investments:
FHLB and PCBB stock	6,233	5,548
Financial Liabilities:
Deposit	1,170,164	1,020,711
Accrued interest payable	1,355	2,686
Level 1
Financial Assets:
Cash and cash equivalents	87,983	86,036
Accrued interest receivable	8	41
Level 2
Financial Assets:
Loans held for sale	44,947	2,100
Accrued interest receivable	270	243
Financial Liabilities:
Deposit	1,170,846	1,021,571
Accrued interest payable	1,355	2,686
Level 3
Financial Assets:
Loans receivable, net	1,073,447	1,009,490
Accrued interest receivable	$ 4,690	$ 2,882

Regulatory Capital Matters - Ad

Regulatory Capital Matters - Additional Information (Details)	12 Months Ended
	Dec. 31, 2019	Sep. 30, 2020	Dec. 31, 2016
Regulatory Capital Requirements [Abstract]
Capital conservation buffer		2.50%	0.625%
Capital conservation buffer, percentage of annual increase until 2019	0.625%

Regulatory Capital Matters - Su

Regulatory Capital Matters - Summary of Actual and Required Capital Amounts and Ratios, Exclusive of Capital Conservation Buffer (Details) $ in Thousands	Sep. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), Actual Amount	$ 153,025	$ 150,092
Tier 1 capital (to risk-weighted assets), Actual Amount	140,192	139,975
Common equity Tier 1 capital (to risk-weighted assets), Actual Amount	140,192	139,975
Tier 1 capital (to average assets), Actual Amount	$ 140,192	$ 139,975
Total capital (to risk-weighted assets), Actual Ratio	0.1493	0.1518
Tier 1 capital (to risk-weighted assets), Actual Ratio	0.1367	0.1416
Common equity Tier 1 capital (to risk-weighted assets), Actual Ratio	0.1367	0.1416
Tier 1 capital (to average assets), Actual Ratio	0.1085	0.1214
Bank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total capital (to risk-weighted assets), Actual Amount	$ 148,830	$ 147,820
Tier 1 capital (to risk-weighted assets), Actual Amount	135,995	137,703
Common equity Tier 1 capital (to risk-weighted assets), Actual Amount	135,995	137,703
Tier 1 capital (to average assets), Actual Amount	$ 135,995	$ 137,703
Total capital (to risk-weighted assets), Actual Ratio	0.1451	0.1496
Tier 1 capital (to risk-weighted assets), Actual Ratio	0.1326	0.1393
Common equity Tier 1 capital (to risk-weighted assets), Actual Ratio	0.1326	0.1393
Tier 1 capital (to average assets), Actual Ratio	0.1052	0.1195
Total capital (to risk-weighted assets), Amount, Required for Capital Adequacy Purposes	$ 82,031	$ 79,069
Tier 1 capital (to risk-weighted assets), Amount, Required for Capital Adequacy Purposes	61,523	59,301
Common equity Tier 1 capital (to risk-weighted assets), Amount, Required for Capital Adequacy Purposes	46,142	44,476
Tier 1 capital (to average assets), Amount, Required for Capital Adequacy Purposes	$ 51,703	$ 46,103
Total capital (to risk-weighted assets), Ratio, Required for Capital Adequacy Purposes	0.0800	0.0800
Tier 1 capital (to risk-weighted assets), Ratio, Required for Capital Adequacy Purposes	0.0600	0.0600
Common equity Tier 1 capital (to risk-weighted assets), Ratio, Required for Capital Adequacy Purposes	0.0450	0.0450
Tier 1 capital (to average assets), Ratio, Required for Capital Adequacy Purposes	0.0400	0.0400
Total capital (to risk-weighted assets), Amount, Minimum To be Considered "Well Capitalized"	$ 102,538	$ 98,836
Tier 1 capital (to risk-weighted assets), Amount, Minimum To be Considered "Well Capitalized"	82,031	79,069
Common equity Tier 1 capital (to risk-weighted assets), Amount, Minimum To be Considered "Well Capitalized"	66,650	64,243
Tier 1 capital (to average assets), Amount, Minimum To be Considered "Well Capitalized"	$ 64,629	$ 57,629
Total capital (to risk-weighted assets), Ratio, Minimum To be Considered "Well Capitalized"	0.1000	0.1000
Tier 1 capital (to risk-weighted assets), Ratio, Minimum To be Considered "Well Capitalized"	0.0800	0.0800
Common equity Tier 1 capital (to risk-weighted assets), Ratio, Minimum To be Considered "Well Capitalized"	0.0650	0.0650
Tier 1 capital (to average assets), Ratio, Minimum To be Considered "Well Capitalized"	0.0500	0.0500

Earnings Per Share - Computatio

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Basic
Net income	$ 3,595	$ 2,416	$ 3,299	$ 4,000	$ 3,836	$ 4,740	$ 9,310	$ 12,576
Undistributed earnings allocated to participating securities	(44)			(81)			(154)	(309)
Net income allocated to common shares	$ 3,551			$ 3,919			$ 9,156	$ 12,267
Weighted average common shares outstanding	15,148,833			15,768,654			15,235,617	15,756,886
Basic earnings per common share	$ 0.23			$ 0.25			$ 0.60	$ 0.78
Diluted
Net income allocated to common shares	$ 3,551			$ 3,919			$ 9,156	$ 12,267
Weighted average common shares outstanding	15,148,833			15,768,654			15,235,617	15,756,886
Add: Dilutive effects of assumed exercises of stock options	33,900			238,832			48,573	235,129
Average shares and dilutive potential common shares	15,182,733			16,007,486			15,284,190	15,992,015
Diluted earnings per common share	$ 0.23			$ 0.24			$ 0.60	$ 0.77

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive shares of common stock excluded from computation of earnings per share		0		0
Stock Options and Restricted Stock Awards
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive shares of common stock excluded from computation of earnings per share	277,000		222,000