Silvergate Capital (SICLQ) 10-K 10 Mar 20 2019 FY Annual report Financial data

Cover Page

Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2019	Mar. 03, 2020	Jun. 30, 2019
Class of Stock [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-39123
Entity Registrant Name	SILVERGATE CAPITAL CORPORATION
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	33-0227337
Entity Address, Address Line One	4250 Executive Square
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	La Jolla
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92037
City Area Code	858
Local Phone Number	362-6300
Title of 12(b) Security	Class A Common Stock, par value $0.01 per share
Trading Symbol	SI
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Public Float			$ 0
Amendment Flag	false
Document Fiscal Year Focus	2019
Entity Central Index Key	0001312109
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE The information required by Items 10, 11, 12, 13 and 14 of Part III of this Annual Report on Form 10-K will be found in the Company’s definitive proxy statement for its 2020 Annual Meeting of Stockholders, to be filed pursuant to Regulation 14A under the Securities Exchange Act of 1934, as amended, and such information is incorporated herein by this reference.
Class A Common Stock
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		18,371,160
Class B Common Stock
Class of Stock [Line Items]
Entity Common Stock, Shares Outstanding		296,836

Consolidated Statements Of Fina

Consolidated Statements Of Financial Condition - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 1,579	$ 4,177
Interest earning deposits in other banks	132,025	670,243
Cash and cash equivalents	133,604	674,420
Securities available-for-sale, at fair value	897,766	357,178
Securities held-to-maturity, at amortized cost (fair value of $72 as of December 31, 2018)	0	73
Loans held-for-sale, at lower of cost or fair value	375,922	350,636
Loans held-for-investment, net of allowance for loan losses of $6,191 and $6,723 at December 31, 2019 and 2018, respectively	664,622	592,781
Federal home loan and federal reserve bank stock, at cost	10,264	9,660
Accrued interest receivable	5,950	5,770
Other real estate owned, net	128	31
Premises and equipment, net	3,259	3,656
Operating lease right-of-use assets	4,571
Derivative assets	23,440	999
Low income housing tax credit investment	954	1,044
Deferred tax assets	0	3,329
Other assets	7,647	4,741
Total assets	2,128,127	2,004,318
Deposits:
Noninterest bearing demand accounts	1,343,667	1,525,922
Interest bearing accounts	470,987	152,911
Deposits held-for-sale	0	104,172
Total deposits	1,814,654	1,783,005
Federal home loan bank advances	49,000	0
Notes payable	3,714	4,857
Subordinated debentures, net	15,816	15,802
Operating lease liabilities	4,881
Accrued expenses and other liabilities	9,026	9,408
Total liabilities	1,897,091	1,813,072
Commitments and contingencies
Preferred stock, $0.01 par value—authorized 10,000 shares; no shares issued or outstanding at December 31, 2019 and 2018	0	0
Additional paid-in capital	132,138	125,665
Retained earnings	92,310	67,464
Accumulated other comprehensive income (loss)	6,401	(2,061)
Total shareholders’ equity	231,036	191,246
Total liabilities and shareholders’ equity	2,128,127	2,004,318
Class A common stock, $0.01 par value—authorized 125,000 shares; 17,775 and 16,629 shares issued and outstanding at December 31, 2019 and 2018, respectively
Deposits:
Common stock	178	166
Class B non-voting common stock, $0.01 par value—authorized 25,000 shares; 893 and 1,190 shares issued and outstanding at December 31, 2019 and 2018, respectively
Deposits:
Common stock	$ 9	$ 12

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value	$ 0	$ 72
Allowance for loan losses	$ 6,191	$ 6,723
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Class A Common Stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	125,000,000	125,000,000
Common stock, shares issued (in shares)	17,775,000	16,629,000
Common stock, shares outstanding (in shares)	17,775,000	16,629,000
Class B Common Stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	25,000,000	25,000,000
Common stock, shares issued (in shares)	893,000	1,190,000
Common stock, shares outstanding (in shares)	893,000	1,190,000

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Interest income
Loans, including fees	$ 51,445	$ 48,100
Securities	20,161	7,332
Other interest earning assets	8,723	16,606
Dividends and other	706	714
Total interest income	81,035	72,752
Interest expense
Deposits	7,713	1,787
Federal home loan bank advances	546	19
Notes payable and other	747	408
Subordinated debentures	1,072	915
Total interest expense	10,078	3,129
Total interest expense	70,957	69,623
Reversal of provision for loan losses	(439)	(1,527)
Net interest income after provision for loan losses	71,396	71,150
Noninterest income
Mortgage warehouse fee income	1,473	1,505
Service fees related to off-balance sheet deposits	1,637	2,422
Deposit related fees	5,302	2,435
Gain on sale of loans, net	828	711
Gain on sale of securities, net	724	0
Gain on sale of branch, net	5,509	0
Other income	281	490
Total noninterest income	15,754	7,563
Noninterest expense
Salaries and employee benefits	33,897	29,898
Occupancy and equipment	3,638	3,091
Communications and data processing	4,607	3,088
Professional services	4,605	6,050
Federal deposit insurance	415	1,230
Correspondent bank charges	1,191	1,163
Other loan expense	412	419
Other real estate owned expense	170	27
Other general and administrative	3,543	3,348
Total noninterest expense	52,478	48,314
Income before income taxes	34,672	30,399
Income tax expense	9,826	8,066
Net income	$ 24,846	$ 22,333
Earnings Per Share [Abstract]
Basic earnings per share (in dollars per share)	$ 1.38	$ 1.35
Diluted earnings per share (in dollars per share)	$ 1.35	$ 1.31
Weighted average shares outstanding:
Basic (in shares)	17,957	16,543
Diluted (in shares)	18,385	17,023

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 24,846	$ 22,333
Other comprehensive (loss) income:
Change in net unrealized gain (loss) on available-for-sale securities	8,928	(1,441)
Less: Reclassification adjustment for net gains included in net income	(724)	0
Income tax effect	(2,348)	412
Unrealized gain (loss) on available-for-sale securities, net of tax	5,856	(1,029)
Change in net unrealized gain on derivative assets	3,653	271
Income tax effect	(1,047)	(86)
Unrealized gain on derivative instruments, net of tax	2,606	185
Other comprehensive income (loss)	8,462	(844)
Total comprehensive income	$ 33,308	$ 21,489

Consolidated Statements of Shar

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Class A Common Stock	Class B Common Stock	Common StockClass A Common Stock	Common StockClass B Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2017	$ 73,800			$ 62	$ 30	$ 29,794	$ 45,131	$ (1,217)
Beginning balance (in shares) at Dec. 31, 2017				6,189,206	3,035,004
Total comprehensive income, net of tax	21,489						22,333	(844)
Net proceeds from stock issuance (in shares)				9,500,000
Net proceeds from stock issuance	107,884			$ 95		107,789
Repurchase of common stock (in shares)				(317,050)	(680,456)
Repurchase of common stock	(11,371)			$ (3)	$ (7)	(11,361)
Conversion of Class B common stock to Class A common stock (in shares)				1,165,000	(1,165,000)
Conversion of Class B common stock to Class A common stock	0			$ 11	$ (11)
Stock-based compensation	112					112
Exercise of stock options, net of shares withheld for employee taxes (in shares)				91,785
Exercise of stock options, net of shares withheld for employee taxes	(668)			$ 1		(669)
Ending balance at Dec. 31, 2018	191,246			$ 166	$ 12	125,665	67,464	(2,061)
Ending balance (in shares) at Dec. 31, 2018		16,629,000	1,190,000	16,628,941	1,189,548
Total comprehensive income, net of tax	33,308						24,846	8,462
Net proceeds from stock issuance (in shares)				824,605
Net proceeds from stock issuance	6,462			$ 8		6,454
Conversion of Class B common stock to Class A common stock (in shares)				296,712	(296,712)
Conversion of Class B common stock to Class A common stock	0			$ 3	$ (3)
Stock-based compensation	$ 177					177
Exercise of stock options, net of shares withheld for employee taxes (in shares)	73,457			24,902
Exercise of stock options, net of shares withheld for employee taxes	$ (157)			$ 1		(158)
Ending balance at Dec. 31, 2019	$ 231,036			$ 178	$ 9	$ 132,138	$ 92,310	$ 6,401
Ending balance (in shares) at Dec. 31, 2019		17,775,000	893,000	17,775,160	892,836

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net income	$ 24,846,000	$ 22,333,000
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	2,673,000	1,178,000
Amortization of securities premiums and discounts, net	1,993,000	385,000
Amortization of loan premiums and discounts and deferred loan origination fees and costs, net	938,000	(483,000)
Stock-based compensation	177,000	112,000
Deferred income tax expense (benefit)	359,000	(154,000)
Reversal of provision for loan losses	(439,000)	(1,527,000)
Gain on sale of loans, net	(828,000)	(711,000)
Gain on sale of securities, net	(724,000)	0
Originations/purchases of loans held-for-sale	(3,424,898,000)	(2,732,900,000)
Proceeds from sales of loans held-for-sale	3,277,954,000	2,708,161,000
Gain on sale of branch, net	(5,509,000)	0
Other, net	1,147,000	(67,000)
Changes in operating assets and liabilities:
Accrued interest receivable and other assets	(1,223,000)	(2,361,000)
Accrued expenses and other liabilities	(3,328,000)	2,967,000
Net cash used in operating activities	(126,862,000)	(3,067,000)
Cash flows from investing activities
Purchases of securities available-for-sale	(600,657,000)	(185,980,000)
Proceeds from sale of securities available-for-sale	42,005,000	0
Proceeds from paydowns and maturities of securities available-for-sale	24,316,000	18,217,000
Loan originations/purchases and payments, net	(130,119,000)	(58,195,000)
Proceeds from sale of loans held-for-sale previously classified as held-for-investment	64,416,000	21,867,000
Purchase of federal home loan and federal reserve bank stock, net	(603,000)	(2,308,000)
Proceeds from sale of other real estate owned	125,000	2,390,000
Purchase of premises and equipment	(1,213,000)	(2,664,000)
Proceeds from sale of branch, net of cash	47,390,000	0
Purchases of derivative contracts, net of proceeds	(20,165,000)	0
Other, net	4,000	40,000
Net cash used in investing activities	(574,501,000)	(206,633,000)
Cash flows from financing activities
Net change in noninterest bearing deposits	(195,503,000)	117,659,000
Net change in interest bearing deposits	301,603,000	(109,800,000)
Net change in federal home loan bank advances	49,000,000	(15,000,000)
Payments made on notes payable	(1,143,000)	(1,143,000)
Proceeds from common stock issuance, net	6,462,000	107,884,000
Repurchase of common stock	0	(11,371,000)
Proceeds from stock option exercise	0	119,000
Taxes paid related to net share settlement of equity awards	(157,000)	(787,000)
Other, net	285,000	(1,109,000)
Net cash provided by financing activities	160,547,000	86,452,000
Net decrease in cash and cash equivalents	(540,816,000)	(123,248,000)
Cash and cash equivalents, beginning of year	674,420,000	797,668,000
Cash and cash equivalents, end of year	133,604,000	674,420,000
Supplemental cash flow information:
Cash paid for interest	9,969,000	3,125,000
Income taxes paid	8,462,000	8,705,000
Supplemental noncash disclosures:
Loans held-for-investment transferred to loans held-for-sale	71,713,000	157,163,000
Loans held-for-sale transferred to loans held-for-investment	14,313,000	0
Loans transferred to other real estate owned	403,000	65,000
Right-of-use assets obtained in exchange for new operating lease liabilities	6,599,000	0
Deposits transferred to held-for-sale	$ 0	$ 104,172,000

Nature of Business and Summary

Nature of Business and Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Nature of Business and Summary of Significant Accounting Policies	Nature of Business and Summary of Significant Accounting Policies Nature of Business The accompanying consolidated financial statements include the accounts of Silvergate Capital Corporation, a Maryland corporation and its wholly-owned subsidiary, Silvergate Bank (the “Bank”), collectively referred to as (the “Company”). The Bank was incorporated in 1987 and commenced business in 1988 under the California Financial Code as an industrial bank. In February 2009 the Bank converted its charter to a California commercial bank, which gave it the added authority to accept demand deposits. At the same time, the Company also became a registered bank holding company under the federal Bank Holding Company Act. The Bank became a member of the Federal Reserve System in December 2012. The Bank is subject to regulation by the California Department of Business Oversight (“DBO”), and the Federal Reserve Bank of San Francisco (“FRB”), and its deposits are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to applicable legal limits. The Bank provides financial services that include commercial banking, commercial and residential real estate lending, mortgage warehouse lending and commercial business lending. The Bank’s primary market is California, but it purchases and originates loans and solicits deposits throughout the Unites States. The lending of the Bank is concentrated in two primary niches: single-family residential real estate and commercial real estate (including multi-family residential properties). In the past, the Bank has also purchased reverse mortgage loans to individuals and has been approved by the Federal Housing Administration (“FHA”) to participate in its administered programs. In mid-2014, the Bank ceased purchases of reverse mortgage loans and, began selling its remaining loans in the secondary market. On November 15, 2018, the Company and the Bank entered into a purchase and assumption agreement to sell the Bank’s retail branch located in San Marcos, California and business loan portfolio to HomeStreet Bank. The Company completed the sale in March 2019, which included the reduction of $115.4 million in loans and $74.5 million in deposits and resulted in a pre-tax gain on sale of $5.5 million . Basis of Presentation The consolidated financial statements include the accounts of the Company and all other entities in which it has a controlling financial interest. All significant intercompany accounts and transactions have been eliminated in consolidation. Unless the context requires otherwise, all references to the Company include its wholly owned subsidiaries. The accounting and reporting policies of the Company are based upon Generally Accepted Accounting Principles (“GAAP”) and conform to predominant practices within the financial services industry. Significant accounting policies followed by the Company are presented below. Reclassifications Certain immaterial reclassifications have been made to the consolidated financial statements to conform to the current year’s presentation. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts and the disclosure of contingent amounts in the Company’s financial statements and the accompanying notes. Actual results could materially differ from those estimates. Cash and Cash Equivalents Cash equivalents consist of federal funds sold and other short-term investments with original maturities of three months or less. The Company maintains amounts due from Banks which exceed federally insured limits. The Company has not experienced any losses in such accounts. Net cash flows are reported for customer loan and deposit transactions, interest bearing deposits in other financial institutions and fed funds sold. Securi ties Management determines the appropriate classification of securities at the time of purchase. Securities to be held for indefinite periods of time, but not necessarily to be held-to-maturity or on a long-term basis, are classified as available-for-sale and carried at fair value, with unrealized gains or losses, net of applicable deferred income taxes, reported as a separate component of shareholders’ equity in accumulated other comprehensive income. Interest income is recognized under the interest method and includes amortization of purchase premiums and accretion of purchase discounts. Premiums and discounts on securities are amortized on the level-yield method, without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Realized gains or losses on the sale of securities are determined using the specific identification method and are recorded on trade date. Securities classified as available-for-sale include securities that management intends to use as part of its asset / liability management strategy and may be sold to provide liquidity in response to changes in interest rates, prepayment risk, or other related factors. Securities classified as held-to-maturity are carried at amortized cost when management has the positive intent to hold the securities to maturity. Management evaluates securities for other than temporary impairment (OTTI) on a quarterly basis, or more frequently when economic or market conditions warrant such an evaluation. Management considers, among other things, (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) the Company’s intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in fair value. Evidence evaluated includes, but is not limited to, the remaining payment terms of the instrument and economic factors that are relevant to the collectability of the instrument, such as: current prepayment speeds, the current financial condition of the issuer(s), industry analyst reports, credit ratings, credit default rates, interest rate trends, the quality of any credit enhancement and the value of any underlying collateral. For each security in an unrealized loss position, the Company assesses whether it intends to sell the security or if it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis less any current-period credit losses. If the Company intends to sell the security or it is more likely than not the Company will be required to sell the security before recovery of its amortized cost basis less any current-period credit loss, the entire difference between the investment’s amortized cost basis and its fair value at the balance sheet date is recognized in earnings. For impaired securities that are not intended for sale and will not be required to be sold prior to recovery of the Company’s amortized cost basis, the Company determines if the impairment has a credit loss component. For both held-to-maturity and available-for-sale securities, if there is no credit loss, no further action is required. For both held-to-maturity and available-for-sale securities, if the amount or timing of cash flows expected to be collected are less than those at the last reporting date, an other-than-temporary impairment shall be considered to have occurred and the credit loss component is recognized in earnings as the present value of the change in expected future cash flows. In determining the present value of the expected cash flows the Company discounts the expected cash flows at the effective interest rate implicit in the security at the date of purchase. The remaining difference between the security’s fair value and the amortized basis is deemed to be due to factors that are not credit related and is recognized in other comprehensive income, net of applicable taxes. Loans Held-for-investment Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal balance outstanding, net of deferred loan fees, unamortized premiums and discounts and an allowance for loan loss. Interest on loans is accrued using the effective interest method based on principal amounts outstanding. Nonrefundable loan fees and certain direct costs associated with the origination of loans are deferred and recognized as an adjustment to interest income over the contractual life of the loans using the level yield method, without anticipating prepayments, or straight lined for loans with revolving features such as construction loans or lines of credit. The accretion of loan fees and costs is discontinued on nonaccrual loans. In addition to originating loans, the Company purchases individual loans and groups of loans. For those purchased loans that management intends to hold for the foreseeable future or until maturity, the purchase premiums and discounts are amortized or accreted using the effective interest method over the remaining contractual life of the loan or straight-lined to their estimated termination for loans with revolving features such as reverse mortgages. Nonaccrual Loans Loans are placed on nonaccrual status when, in the opinion of management, the full and timely collection of principal or interest is in doubt. Generally, the accrual of interest is discontinued when principal or interest payments become more than 90 days past due. In all cases, loans are placed on nonaccrual or charged-off at an earlier date if collection of the principal or interest is considered doubtful. When a loan is placed on nonaccrual status, previously accrued but unpaid interest is reversed against current income. Subsequent collections of unpaid amounts on such a loan are applied to reduce principal when received, except when the ultimate collectability of principal is probable, in which case interest payments are credited to income. Nonaccrual loans may be restored to accrual status if and when principal and interest become current and full repayment is expected. Allowance for Loan Losses The allowance for loan losses is a valuation allowance for probable incurred credit losses. Loans that are deemed to be uncollectible are charged off and deducted from the allowance for loan losses. The provision for loan losses and recoveries on loans previously charged off are credited to the allowance for loan losses. The allowance consists of specific and general components. The specific component relates to loans that are individually classified as impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Loans for which the terms have been modified resulting in a concession, and for which the borrower is experiencing financial difficulties, are considered troubled debt restructurings (TDRs) and classified as impaired. The general component covers loans that are collectively evaluated for impairment and loans that are not individually identified for impairment evaluation. The general component is based on historical loss experience adjusted for current factors and includes actual loss history experienced for the preceding rolling twelve year period or less, if twelve years of data is not available. This actual loss experience is supplemented with other economic factors based on the risks present for each portfolio segment. These economic factors include consideration of the following: levels and trends in delinquencies and impaired loans (including TDRs); levels and trends in charge-offs and recoveries, trends in volumes and terms of loans; migration of loans to the classification of special mention, substandard, or doubtful; effects of any change in risk selection and underwriting standards; other changes in lending policies and procedures; national and local economic trends and conditions; and effects of changes in credit concentrations. Management estimates the allowance balance required using past loan loss experience, current economic conditions, the nature and volume of the portfolio, information about specific borrower situations, estimated collateral values and other factors. Allocations of the allowance may be made for specific loans, but the entire allowance is available for any loan that, in management’s judgment, should be charged off. Amounts are charged off when available information confirms that specific loans, or portions thereof, are uncollectible. This methodology for determining charge-offs is consistently applied to each group of loans. Management groups loans into different categories based on loan type to determine the appropriate allowance for each loan group. A loan is considered impaired when full payment under the loan terms is not expected. Impairment is evaluated on an individual loan basis for all loans that meet the criteria for specifically evaluated impairment. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported, net of the present value of estimated future cash flows using the loan’s original effective rate or at the fair value of collateral less estimated costs to sell if repayment is expected solely from the collateral. Factors considered in determining impairment include payment status, collateral value and the probability of collecting all amounts when due. Large groups of smaller-balance homogeneous loans such as residential real estate loans are collectively evaluated for impairment and, accordingly, they are not separately identified for impairment disclosures. Loans that experience insignificant payment delays and payment shortfalls are generally not classified as impaired. Management considered the significance of payment delays on a case by case basis, taking into consideration all the circumstances of the loan and borrower, including the length of delay, the reasons for the delay, the borrower’s prior payment record, the amount of the shortfall in relation to principal and interest owed. Loans are reported as TDRs when the Company grants concession(s) to a borrower experiencing financial difficulties that it would not otherwise consider. Examples of such concessions include forgiveness of principal or accrued interest, extending the maturity date, or providing a lower interest rate than would be normally available for a transaction of similar risk. As a result of these concessions, restructured loans are impaired as the Company will not collect all amounts due, both principal and interest, in accordance with the terms of the original loan agreement. TDRs are individually evaluated for impairment and included in separately identified impairment disclosures. TDRs are measured at the present value of estimated cash flows using the loan’s effective rate at inception. If a TDR is considered to be a collateral dependent loan, the loan is reported, net, at the fair value of the collateral. For TDRs that subsequently default, the Company determined the amount of the allowance on the loan in accordance with the accounting policy for the allowance for loan losses on loans individually identified as impaired. The Company incorporates recent historical experience related to TDRs, including the performance of TDRs that subsequently defaulted, into the allowance calculation by loan portfolio segment. Loans Held-for-sale Certain loans originated or acquired and intended for sale in the secondary market are carried at the lower of cost or estimated fair value in the aggregate, as determined by outstanding commitments from investors. Net unrealized losses are recognized through a valuation allowance by charges to income. Gains or losses realized on the sales of loans are recognized at the time of sale and are determined by the difference between the net sales proceeds and the carrying value of the loans sold, adjusted for any servicing asset or liability. Gains and losses on sales of loans are included in noninterest income. Transfers of loans are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control through an agreement to purchase them before their maturity. In the event of a breach of representations and warranties, the Company may be required to repurchase a mortgage loan or indemnify the purchaser, and any subsequent loss on the mortgage loan may be borne by the Company. If there is no breach of a representation and warranty provision, the Company has no obligation to repurchase the loan or indemnify the investor against loss. In cases where the Company repurchases loans, it bears the subsequent credit loss on the loans. Repurchased loans are classified as held-for-sale and are initially recorded at fair value until disposition. The Company seeks to manage the risk of repurchase and associated credit exposure through our underwriting and quality assurance practices and by servicing mortgage loans to meet investor standards. Federal Ho me Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”) Stock The Bank is a member of the FHLB of San Francisco and the FRB system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. Investments in nonmarketable equity securities, such as FHLB stock and FRB stock, are recorded at cost, classified as a restricted security and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income. Othe r Real Estate Owned Real estate acquired through or in lieu of loan foreclosure is initially recorded at fair value less estimated costs to sell when acquired, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through similar legal agreement. If fair value declines subsequent to acquisition, a valuation allowance is recorded through expense. Operating costs after acquisition are expensed. Premise s and Equipment Premises and equipment are stated at cost less accumulated depreciation and amortization. Amortization of leasehold improvements is computed on a straight-line basis over the terms of the leases or the estimated useful lives of the improvements, whichever is shorter. Depreciation of equipment, furniture, and automobiles is charged to operating expense over the estimated useful lives of the assets on a straight-line basis. The estimated useful lives of equipment, furniture, and automobiles range from three to ten years . Software is stated at cost less accumulated amortization. Amortization of software is computed on a straight-line basis over the estimated useful life of the software, and this period is typically three to five years . Loan Com mitments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded. Derivative Financial Instruments At inception of a derivative contract, the Company designates the derivative as one of three types based on the Company’s intention and belief as the likely effectiveness as a hedge. These three types are (1) a hedge of fair value of a recognized asset or liability or of an unrecognized firm commitment (“fair value hedge”), (2) a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow hedge”), or (3) an instrument with no hedging designation (“stand alone derivative”). For a fair value hedge, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item, are recognized in current earnings as fair values change. For a cash flow hedge, the gain or loss on the derivative is reported in other comprehensive income and is reclassified into earnings in the same period during which the hedged transaction affects the earnings. The changes in fair value of derivatives that do not qualify for hedge accounting are reported in current earnings, as noninterest income. Net cash settlements on derivatives that qualify for hedge accounting are recorded in interest income or interest expense, based on the item being hedged. Net cash settlements on derivatives that do not qualify for hedge accounting are reported in noninterest income. Cash flows on hedges are classified in the cash flow statement the same as the cash flows of the item being hedged. The Company formally documents the relationship between the derivative and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions at the inception of the hedging relationship. This documentation includes linking fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting the changes in fair values or cash flows of the hedged items. The initial fair value of hedge components excluded from the assessment of effectiveness is recognized in the statement of financial condition under a systematic and rational method over the life of the hedging instrument and is presented in the same income statement line item as the earnings effect of the hedged item. Any difference between the change in the fair value of the hedge components excluded from the assessment of effectiveness and the amounts recognized in earnings is recorded as a component of other comprehensive income. The Company discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in fair values or cash flows of the hedged item, the derivative is settled or terminates, a hedged forecasted transaction is no longer probable, a hedged firm commitment is no longer firm, or treatment of the derivative as a hedge is no longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as noninterest income. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income are amortized into earnings over the same periods which the hedged transactions will affect earnings. Low Inc ome Housing Tax Credit Investment The Company has invested in a limited partnership that was formed to develop and operate several apartment complexes designed as high-quality affordable housing for lower income tenants throughout California. The investment is accounted for using the equity method of accounting. The partnership must meet the regulatory minimum requirements for affordable housing for a minimum 15-year compliance period to fully utilize the tax credits. If the partnership ceases to qualify during the compliance period, the credit may be denied for any period in which the project is not in compliance and a portion of the credit previously taken is subject to recapture with interest. At December 31, 2019 and 2018 , the balance of the investment for qualified housing projects was $1.0 million . Deferred Offering Costs The Company capitalizes certain legal, accounting, and other third-party fees that are directly associated with in-process equity financings until such financings are consummated. After consummation of the equity financing, these costs are recorded in equity as a reduction from the proceeds of the offering. Should the equity financing for which those costs relate no longer be considered probable of being consummated, all deferred offering costs will be charged to operating expenses in the statement of operations. As of December 31, 2018, the Company had recorded $1.5 million of deferred offering costs within other assets in the accompanying consolidated statement of financial condition. The Company completed its Initial Public Offering (“IPO”) and these costs were recorded in equity as a reduction to the gross proceeds in conjunction with the Company’s IPO on November 7, 2019. See “Note 18—Shareholders’ Equity” for more information. Incom e Taxes Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are recognized for the future tax amounts attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases, computed using enacted tax rates. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. The Company accounts for uncertainty in tax positions taken or expected to be taken on a tax return in accordance with Financial Accounting Standards Board (the “FASB”) Accounting Standards Codification (“ASC”) Topic 740, Accounting for Income Taxes , and provides that the tax effects from an uncertain tax position can be recognized in the financial statements only if, based on its merits, the position is more likely than not to be sustained on audit by the taxing authorities. Management believes that all tax positions taken to date are highly certain and, accordingly, no accounting adjustment has been made to the financial statements. Interest and penalties, if any, related to uncertain tax positions are recorded as part of income tax expense. Stock-b ased Compensation The Company accounts for stock-based compensation in accordance with FASB ASC Topic 718, Compensation—Stock Compensation , that generally requires entities to recognize the cost of employee services received in exchange for awards of stock options, or other equity instruments, based on the grant date fair value of those awards. Compensation cost is recognized for awards issued to employees based on the fair value of these awards at the date of grant. A Black Scholes model is utilized to estimate the fair value of stock options. This cost is recognized over the period which an employee is required to provide services in exchange for the award, generally the vesting period. Fair Valu e Measurement The Company measures and presents fair values in accordance with FASB ASC Topic 820, Fair Value Measurement , that defines fair value, establishes a framework for measuring fair value, and requires disclosures about fair value measurements. This standard establishes a fair value hierarchy about the assumptions used to measure fair value and clarifies assumptions about risk and the effect of a restriction on the sale or use of an asset. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an 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. This standard’s fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value: 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 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. See “Note 16—Fair Value” for more information and disclosures relating to the Company’s fair value measurements. Revenue Recognition On January 1, 2018, the Company adopted ASC 606, Revenue from Contracts with Customers , which establishes a single framework for recognizing revenue from contracts with customers that fall within its scope. The core principle of the guidance requires an entity to recognize revenue to depict the transfer of promised 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 revenues are not subject to ASC 606, including revenue generated from financial instruments, such as loans, letters of credit, and derivatives and investment securities, as these activities are subject to other applicable GAAP. Revenue streams within the scope of and accounted under ASC 606 include service charges and fees on deposit accounts, fees from other services the Company provides its customers, and gains and losses from the sale of other real estate owned and property, premises and equipment. These revenue streams are presented in the Company's consolidated statements of operations as components of noninterest income. Service charges on deposit accounts and other service fee income consist of periodic service charges on deposit accounts and transaction based fees such as those related to wire transfer fees, ACH fees, stop payment fees, insufficient funds fees and mortgage warehouse fees. Performance obligations for periodic service charges are typically short-term in nature, can be canceled anytime by the customer or the Company and are generally satisfied over a monthly period, while performance obligations for other transaction based fees are typically satisfied at a point in time (which may consist of only a few moments to perform the service or transaction) with no further obligation beyond the completion of the service or transaction. Periodic service charges are generally collected directly from a customer’s deposit account on a monthly basis, at the end of a statement cycle, while transaction-based service charges are typically collected and earned at the time of or soon after the service is performed. Other revenue streams that may be applicable to the Company include gains and losses from the sale of non-financial assets such as other real estate owned and property, premises and equipment. The Company accounts for these revenue streams in accordance with ASC 610-20, which requires the Company to refer to guidance in ASC 606 in the application of certain measurement and recognition concepts. The Company records gains and losses on the sale of non-financial assets when control of the asset has been surrendered to the buyer, which generally occurs at a specific point in time. Opera ting Segments While the chief decision-makers monitor the revenue streams of the various products and services, operations are managed and financial performance is evaluated on a Company-wide basis. Operating results are not reviewed by senior management to make resource allocation or performance decisions. Accordingly, all of the financial service operations are considered by management to be aggregated in one reportable operating segment. Earnings Pe r Share Basic earnings per share is computed on the basis of the weighted average number of common shares outstanding during the year. Diluted earnings per share is computed on the basis of the weighted average number of common shares outstanding and any dilutive common equivalent shares resulting from stock options or awards. Compr ehensive Income The Company presents comprehensive income in accordance with FASB ASC Topic 220, Comprehensive Income , that requires the disclosure of comprehensive income (loss) and its components. Other comprehensive income (loss) includes unrealized gains and losses on securities available-for-sale and the change in the fair value of cash flow hedges, net of defer

Securities

Securities	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The fair value of available-for-sale securities and their related gross unrealized gains and losses at the dates indicated are as follows: Available-for-sale securities Amortized Cost Gross Gross Fair Value (Dollars in thousands) December 31, 2019 Residential mortgage-backed securities: Government agency mortgage-backed securities $ 769 $ 32 $ — $ 801 Government agency collateralized mortgage obligation 242,203 552 (837 ) 241,918 Private-label collateralized mortgage obligation 26,346 352 (198 ) 26,500 Commercial mortgage-backed securities: Private-label collateralized mortgage obligation 364,719 12,474 (177 ) 377,016 Asset backed securities: Government sponsored student loan pools 258,022 — (6,491 ) 251,531 $ 892,059 $ 13,410 $ (7,703 ) $ 897,766 Available-for-sale securities Amortized Cost Gross Gross Fair Value (Dollars in thousands) December 31, 2018 Residential mortgage-backed securities: Government agency mortgage-backed securities $ 932 $ 25 $ — $ 957 Government agency collateralized mortgage obligation 50,888 37 (625 ) 50,300 Private-label collateralized mortgage obligation 23,988 64 (107 ) 23,945 Commercial mortgage-backed securities: Government agency collateralized mortgage obligation 23,817 — (1,065 ) 22,752 Asset backed securities: Government sponsored student loan pools 260,050 188 (1,014 ) 259,224 $ 359,675 $ 314 $ (2,811 ) $ 357,178 There were no held-to-maturity securities as of December 31, 2019. The amortized cost, unrealized gains and losses, and fair value of securities held-to-maturity at the date indicated are as follows: Held-to-maturity securities Amortized Cost Gross Gross Fair Value (Dollars in thousands) December 31, 2018 Collateralized mortgage obligation $ 73 $ — $ (1 ) $ 72 At December 31, 2019 and 2018 , the Company had no private-label held-to-maturity collateralized mortgage obligations. There were no investment securities pledged for borrowings or for other purposes as required or permitted by law as of December 31, 2019 and 2018 . At December 31, 2019 , the total fair value of securities issued by six individual issuers, other than the U.S. Government and its agencies, in an amount greater than 10% of shareholders’ equity was $346.0 million . Securities with unrealized losses as of the dates indicated, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are as follows: Available-for-sale securities Less than 12 Months 12 Months or More Total Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized (Dollars in thousands) December 31, 2019 Residential mortgage-backed securities: Government agency collateralized mortgage obligation $ 143,633 $ (785 ) $ 15,794 $ (52 ) $ 159,427 $ (837 ) Private-label collateralized mortgage obligation 59 (1 ) 15,168 (197 ) 15,227 (198 ) Commercial mortgage-backed securities: Private-label collateralized mortgage obligation 13,142 (177 ) — — 13,142 (177 ) Asset backed securities: Government sponsored student loan pools 62,938 (1,317 ) 188,593 (5,174 ) 251,531 (6,491 ) $ 219,772 $ (2,280 ) $ 219,555 $ (5,423 ) $ 439,327 $ (7,703 ) Available-for-sale securities Less than 12 Months 12 Months or More Total Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized (Dollars in thousands) December 31, 2018 Residential mortgage-backed securities: Government agency collateralized mortgage obligation $ 9,952 $ (58 ) $ 29,450 $ (567 ) $ 39,402 $ (625 ) Private-label collateralized mortgage obligation 19,061 (80 ) 1,703 (27 ) 20,764 (107 ) Commercial mortgage-backed securities: Government agency collateralized mortgage obligation — — 22,752 (1,065 ) 22,752 (1,065 ) Asset backed securities: Government sponsored student loan pools 219,169 (1,014 ) — — 219,169 (1,014 ) $ 248,182 $ (1,152 ) $ 53,905 $ (1,659 ) $ 302,087 $ (2,811 ) As indicated in the tables above, as of December 31, 2019 , the Company’s investment securities had gross unrealized losses totaling approximately $7.7 million , compared to approximately $2.8 million at December 31, 2018 . The Company analyzed all of its securities with an unrealized loss position. For each security, the Company analyzed the credit quality and performed a projected cash flow analysis. In analyzing the credit quality, management may consider whether the securities are issued by the federal government, its agencies or its sponsored entities, or non-governmental entities, whether downgrades by bond rating agencies have occurred, and if credit quality has deteriorated. When performing a cash flow analysis the Company uses models that project prepayments, default rates, and loss severities on the collateral supporting the security, based on underlying loan level borrower and loan characteristics and interest rate assumptions. In addition, the Company has contracted with third party companies to perform independent cash flow analyses of its securities portfolio as needed. Based on these analyses and reviews conducted by the Company, and assisted by independent third parties, the Company determined that none of its securities required an other-than-temporary impairment charge at December 31, 2019 or December 31, 2018 . Management continues to expect to recover the adjusted amortized cost basis of these bonds. As of December 31, 2019 , the Company had 33 securities whose estimated fair value declined 1.72% from the Company’s amortized cost; at December 31, 2018 , the Company had 32 securities whose estimated fair value declined 0.92% from the Company’s amortized cost. The unrealized losses relate principally to the general change in market interest rates since the purchase dates and such unrecognized losses will continue to vary with general market interest rate fluctuations in the future. Fair values are expected to recover as the securities approach their respective maturity dates and management believes it is not more likely than not it will be required to sell before recovery of the amortized cost basis. For the year ended December 31, 2019 the Company received $42.0 million in proceeds, recognized $0.9 million in gains and $0.2 million in losses on sales of available for sale securities. The tax expense related to the net realized gains and losses were $0.2 million for the year ended December 31, 2019 . There were no sales and calls of securities during the year ended December 31, 2018 . There were no credit losses recognized in earnings for the year ended December 31, 2019 and 2018 .

Loans

Loans	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Loans	Loans The following disclosure reports the Company’s loan portfolio segments and classes. Segments are groupings of similar loans at a level in which the Company has adopted systematic methods of documentation for determining its allowance for loan and credit losses. Classes are a disaggregation of the portfolio segments. The Company’s loan portfolio segments are: Real estate loans. Real estate includes loans for which the Company holds one-to-four family, multi-family, commercial and construction real property as collateral. Commercial real estate lending activity is typically restricted to owner-occupied properties or to investor properties that are owned by customers with a current banking relationship. The primary risks of real estate mortgage loans include the borrower’s inability to pay, material decreases in the value of the real estate that is being held as collateral and significant increases in interest rates, which may make the real estate mortgage loan unprofitable. Real estate loans also may be adversely affected by conditions in the real estate markets or in the general economy. Commercial and industrial . Commercial and industrial loans consist of loans and lines of credit to small and medium-sized businesses in a wide variety of industries, including distributors, manufacturers, software developers business services companies and independent finance companies. Commercial and industrial loans are generally collateralized by accounts receivable, inventory, equipment, loan and lease receivables, and other commercial assets, and may be supported by other credit enhancements such as personal guarantees. Risk may arise from differences between expected and actual cash flows and/or liquidity levels of the borrowers, as well as the type of collateral securing these loans and the reliability of the conversion thereof to cash. Since the March 2019 sale of our business loan portfolio, commercial and industrial loans consist primarily of asset based loans. Consumer and other. Consumer loans consist of consumer loans and other loans secured by personal property. Reverse mortgage. From 2012 to 2014, the Company purchased home equity conversion mortgage (“HECM”) loans (also known as reverse mortgage loans) which are a special type of home loan, for homeowners aged 62 years or older, that requires no monthly mortgage payments. Reverse mortgage loan insurance is provided by the U. S. Federal Housing Administration through the HECM program which protects lenders from losses due to non-repayment of the loans. In mid-2014, the Bank ceased purchases of reverse mortgage loans and, began selling its remaining loans in the secondary market. Mortgage warehouse. The Company’s warehouse lending division provides short-term interim funding for single-family residential mortgage loans originated by mortgage bankers or other lenders pending the sale of such loans in the secondary market. The Company’s risk is mitigated by comprehensive policies, procedures, and controls governing this activity, partial loan funding by the originating lender, guaranties or additional monies pledged to the Company as security, the short holding period of funded loans on the Company’s balance sheet. In addition, the loss rates of this portfolio have historically been minimal, and these loans are all subject to written purchase commitments from takeout investors or are hedged. The Company’s mortgage warehouse loans may either be held-for-investment or held-for-sale depending on the underlying contract. The Company sold approximately $151.3 million and $165.1 million loans to participants during the year ended December 31, 2019 and 2018 , respectively. At December 31, 2019 and 2018 , gross warehouse loans were approximately $405.0 million and $252.6 million , respectively. A summary of loans as of the periods presented are as follows: December 31, 2019 2018 (Dollars in thousands) Real estate loans: One-to-four family $ 193,367 $ 190,885 Multi-family 81,233 40,584 Commercial 331,052 309,655 Construction 7,213 3,847 Commercial and industrial 14,440 8,586 Consumer and other 122 150 Reverse mortgage 1,415 1,742 Mortgage warehouse 39,247 41,586 Total gross loans held-for-investment 668,089 597,035 Deferred fees, net 2,724 2,469 Total loans held-for-investment 670,813 599,504 Allowance for loan losses (6,191 ) (6,723 ) Total loans held-for-investment, net $ 664,622 $ 592,781 Total loans held-for-sale (1) $ 375,922 $ 350,636 ________________________ (1) Loans held-for-sale included $365.8 million , and $211.0 million of mortgage warehouse loans at December 31, 2019 and 2018, respectively. At December 31, 2018, loans held-for-sale also included $125.2 million of business loans that were sold in March 2019, discussed in “Note 1—Nature of Business and Summary of Significant Accounting Policies”. At December 31, 2019 and 2018 , approximately $614.3 million and $546.7 million , respectively, of the Company’s loan portfolio were collateralized by various forms of real estate. A significant percentage of such loans are collateralized by properties located in California ( 64.8% and 69.7% as of December 31, 2019 and 2018 , respectively) and Arizona ( 10.2% and 7.3% as of December 31, 2019 and 2018 , respectively) with no other state greater than 5%. The Company attempts to address and mitigate concentrations of credit risk by making loans that are diversified by collateral type, placing limits on the amounts of various categories of loans relative to total Company capital, and conducting quarterly reviews of its portfolio by collateral type, geography, and other characteristics. While management believes that the collateral presently securing its portfolio and the recorded allowance for loan losses are adequate to absorb potential losses, there can be no assurances that significant deterioration in the California, Florida and Arizona real estate markets would not expose the Company to significantly greater credit risk. Recorded investment in loans excludes accrued interest receivable, loan origination fees, net and unamortized premium or discount, net due to immateriality. Accrued interest on loans held-for-investment totaled approximately $2.2 million and $2.1 million and deferred fees totaled approximately $2.7 million and $2.5 million at December 31, 2019 and 2018 , respectively. Allowance for Loan Losses The following tables present the allocation of the allowance for loan losses, as well as the activity in the allowance by loan class, and recorded investment in loans held-for-investment as of and for the periods presented: Year Ended December 31, 2019 One-to Multi- Commercial Construction Commercial Consumer Reverse Mortgage Total (Dollars in thousands) Balance, December 31, 2018 $ 1,848 $ 483 $ 3,854 $ 98 $ 156 $ 1 $ 54 $ 229 $ 6,723 Charge-offs (93 ) — — — — — — — (93 ) Recoveries — — — — — — — — — Provision for loan losses 296 170 (1,063 ) (2 ) 156 — (17 ) 21 (439 ) Balance, December 31, 2019 $ 2,051 $ 653 $ 2,791 $ 96 $ 312 $ 1 $ 37 $ 250 $ 6,191 December 31, 2019 One-to Multi- Commercial Construction Commercial Consumer Reverse Mortgage Total (Dollars in thousands) Amount of allowance attributed to: Specifically evaluated impaired loans $ 10 $ — $ — $ — $ — $ — $ 29 $ — $ 39 General portfolio allocation 2,041 653 2,791 96 312 1 8 250 6,152 Total allowance for loan losses $ 2,051 $ 653 $ 2,791 $ 96 $ 312 $ 1 $ 37 $ 250 $ 6,191 Loans evaluated for impairment: Specifically evaluated $ 4,222 $ — $ 7,353 $ — $ 2,714 $ — $ 848 $ — $ 15,137 Collectively evaluated 189,145 81,233 323,699 7,213 11,726 122 567 39,247 652,952 Total gross loans held-for-investment $ 193,367 $ 81,233 $ 331,052 $ 7,213 $ 14,440 $ 122 $ 1,415 $ 39,247 $ 668,089 Year Ended December 31, 2018 One-to Multi- Commercial Construction Commercial Consumer Reverse Mortgage Total (Dollars in thousands) Balance, December 31, 2017 $ 1,991 $ 226 $ 4,711 $ 140 $ 677 $ 18 $ 41 $ 361 $ 8,165 Charge-offs (6 ) — — — — — — — (6 ) Recoveries 10 — — — 80 — 1 — 91 Provision for loan losses (147 ) 257 (857 ) (42 ) (601 ) (17 ) 12 (132 ) (1,527 ) Balance, December 31, 2018 $ 1,848 $ 483 $ 3,854 $ 98 $ 156 $ 1 $ 54 $ 229 $ 6,723 December 31, 2018 One-to Multi- Commercial Construction Commercial Consumer Reverse Mortgage Total (Dollars in thousands) Amount of allowance attributed to: Specifically evaluated impaired loans $ — $ — $ — $ — $ — $ — $ 47 $ — $ 47 General portfolio allocation 1,848 483 3,854 98 156 1 7 229 6,676 Total allowance for loan losses $ 1,848 $ 483 $ 3,854 $ 98 $ 156 $ 1 $ 54 $ 229 $ 6,723 Loans evaluated for impairment: Specifically evaluated $ 3,342 $ — $ 7,946 $ — $ 3,596 $ — $ 1,223 $ — $ 16,107 Collectively evaluated 187,543 40,584 301,709 3,847 4,990 150 519 41,586 580,928 Total gross loans held-for-investment $ 190,885 $ 40,584 $ 309,655 $ 3,847 $ 8,586 $ 150 $ 1,742 $ 41,586 $ 597,035 Impaired Loans The following tables provide a summary of the Company’s investment in impaired loans as of and for the periods presented: December 31, 2019 Unpaid Recorded Related Average Interest (Dollars in thousands) With no related allowance recorded: Real estate loans: One-to-four family $ 4,792 $ 4,156 $ — $ 4,071 $ 234 Commercial 7,632 7,353 — 7,685 365 Commercial and industrial 2,929 2,714 — 2,595 261 Reverse mortgage 510 511 — 728 — 15,863 14,734 — 15,079 860 With an allowance recorded: Real estate loans: One-to-four family 66 66 10 24 6 Reverse mortgage 337 337 29 355 — 403 403 39 379 6 Total impaired loans $ 16,266 $ 15,137 $ 39 $ 15,458 $ 866 December 31, 2018 Unpaid Recorded Related Average Interest (Dollars in thousands) With no related allowance recorded: Real estate loans: One-to-four family $ 3,739 $ 3,318 $ — $ 3,575 $ 80 Commercial 8,266 7,946 — 9,303 439 Commercial and industrial 3,754 3,596 — 2,845 276 Reverse mortgage 846 797 — 1,110 — 16,605 15,657 — 16,833 795 With an allowance recorded: Real estate loans: One-to-four family 24 24 — 26 2 Commercial — — — 1,134 — Reverse mortgage 454 426 47 363 — 478 450 47 1,523 2 Total impaired loans $ 17,083 $ 16,107 $ 47 $ 18,356 $ 797 For purposes of this disclosure, the unpaid principal balance is not reduced for partial charge-offs. Cash basis interest income is not materially different than interest income recognized. Nonaccrual and Past Due Loans Nonperforming loans include individually evaluated impaired loans. Nonperforming loans consist of loans on nonaccrual status for which the accrual of interest has been discontinued and loans 90 days or more past due and still accruing interest. The following tables present by loan class the aging analysis based on contractual terms, nonaccrual loans, and the Company’s recorded investment in loans held-for-investment as of the periods presented: December 31, 2019 30-59 60-89 Greater Total Current Total Nonaccruing Loans (Dollars in thousands) Real estate loans: One-to-four family $ 3,573 $ 96 $ 3,302 $ 6,971 $ 186,396 $ 193,367 $ 3,963 $ — Multi-family — — — — 81,233 81,233 — — Commercial — — — — 331,052 331,052 — — Construction — — — — 7,213 7,213 — — Commercial and industrial — — — — 14,440 14,440 1,098 — Consumer and other — — — — 122 122 — — Reverse mortgage — — — — 1,415 1,415 848 — Mortgage warehouse — — — — 39,247 39,247 — — Total gross loans held-for-investment $ 3,573 $ 96 $ 3,302 $ 6,971 $ 661,118 $ 668,089 $ 5,909 $ — December 31, 2018 30-59 60-89 Greater Total Current Total Nonaccruing Loans (Dollars in thousands) Real estate loans: One-to-four family $ — $ 49 $ 2,991 $ 3,040 $ 187,845 $ 190,885 $ 3,062 $ — Multi-family — — — — 40,584 40,584 — — Commercial — — — — 309,655 309,655 422 — Construction — — — — 3,847 3,847 — — Commercial and industrial — — — — 8,586 8,586 3,596 — Consumer and other — — — — 150 150 — — Reverse mortgage — — — — 1,742 1,742 1,223 — Mortgage warehouse — — — — 41,586 41,586 — — Total gross loans held-for-investment $ — $ 49 $ 2,991 $ 3,040 $ 593,995 $ 597,035 $ 8,303 $ — Troubled Debt Restructurings A loan is identified as a troubled debt restructuring (“TDR”) when a borrower is experiencing financial difficulties and, for economic or legal reasons related to these difficulties, the Company grants a concession to the borrower in the restructuring that it would not otherwise consider. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of its debt in the foreseeable future without the modification. The Company has granted a concession when, as a result of the restructuring, it does not expect to collect all amounts due or within the time periods originally due under the original contract, including one or a combination of the following: a reduction of the stated interest rate of the loan; an extension of the maturity date at a stated rate of interest lower than the current market rate for new debt with similar risk; or a temporary forbearance with regard to the payment of principal or interest. All troubled debt restructurings are reviewed for potential impairment. Generally, a nonaccrual loan that is restructured remains on nonaccrual status for a minimum period of six months to demonstrate that the borrower can perform under the restructured terms. If the borrower’s performance under the new terms is not reasonably assured, the loan remains classified as a nonaccrual loan. Loans classified as TDRs are reported as impaired loans. As of December 31, 2019 and 2018 , the Company had a recorded investment in TDR’s of $1.8 million and $0.5 million , respectively. The Company has not allocated any amount of specific allowance for those loans at December 31, 2019 and has allocated a negligible amount of specific allowance for those loans at December 31, 2018 The Company has not committed to lend additional amounts to these TDRs. No loans were modified as TDRs during the year ended December 31, 2018 . Modifications of loans classified as TDRs during the periods presented, are as follows: Year Ended December 31, 2019 Number of Pre- Post- (Dollars in thousands) Troubled debt restructurings: Real estate loans: One-to-four family 2 $ 1,018 $ 1,114 Commercial and industrial 1 494 494 3 1,512 1,608 The TDR’s described above had no impact the allowance for loan losses and charge-offs during the year ended December 31, 2019 . A loan is considered to be in payment default once it is 30 days contractually past due under the modified terms. There were no loans modified as TDRs for which there was a payment default within twelve months during the year ended December 31, 2019 or 2018 . There was no provision for loan loss or charge offs for TDR’s that subsequently defaulted during the year ended December 31, 2019 or 2018 . Credit Quality Indicators The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt such as: current financial information, historical payment experience, collateral adequacy, credit documentation, and current economic trends, among other factors. This analysis typically includes larger, nonhomogeneous loans such as commercial real estate and commercial and industrial loans. This analysis is performed on an ongoing basis as new information is obtained. The Company uses the following definitions for risk ratings: Pass : Loans in all classes that are not adversely rated, are contractually current as to principal and interest, and are otherwise in compliance with the contractual terms of the loan agreement. Management believes that there is a low likelihood of loss related to those loans that are considered pass. 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 institution’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 Company 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. Loss : Credits rated as loss are charged-off. Management has no expectation of the recovery of any payments in respect of credits rated as loss. The following tables present by portfolio class the Company’s internal risk grading system as well as certain other information concerning the credit quality of the Company’s recorded investment in loans held-for-investment as of the periods presented. No assets were classified as loss or doubtful during the periods presented. Credit Risk Grades Pass Special Mention Substandard Doubtful Total (Dollars in thousands) December 31, 2019 Real estate loans: One-to-four family $ 189,405 $ — $ 3,962 $ — $ 193,367 Multi-family 81,233 — — — 81,233 Commercial 322,671 8,381 — — 331,052 Construction 7,213 — — — 7,213 Commercial and industrial 11,726 — 2,714 — 14,440 Consumer and other 122 — — — 122 Reverse mortgage 435 132 848 — 1,415 Mortgage warehouse 39,247 — — — 39,247 Total gross loans held-for-investment $ 652,052 $ 8,513 $ 7,524 $ — $ 668,089 Credit Risk Grades Pass Special Mention Substandard Doubtful Total (Dollars in thousands) December 31, 2018 Real estate loans: One-to-four family $ 187,823 $ — $ 3,062 $ — $ 190,885 Multi-family 40,584 — — — 40,584 Commercial 309,233 — 422 — 309,655 Construction 3,847 — — — 3,847 Commercial and industrial 4,630 360 3,596 — 8,586 Consumer and other 150 — — — 150 Reverse mortgage 214 305 1,223 — 1,742 Mortgage warehouse 41,586 — — — 41,586 Total gross loans held-for-investment $ 588,067 $ 665 $ 8,303 $ — $ 597,035 Purchases and Sales The following table presents loans held-for-investment purchased and/or sold during the year by portfolio segment: December 31, 2019 2018 Purchases Sales Purchases Sales (Dollars in thousands) Real estate loans: One-to-four family $ 103,658 $ — $ 91,395 $ 17,177 Multi-family 19,280 — 17,809 — Commercial — — 12,500 1,118 $ 122,938 $ — $ 121,704 $ 18,295 Related Party Loans The Company had related-party loans with an outstanding balance of $4.6 million and $5.0 million as of December 31, 2019 and 2018 , respectively. During the year ended December 31, 2019 , the balance of related party loans decreased by $0.3 million due to changes in composition of related parties and the Company received $78,000 in principal payments. During the year ended December 31, 2018 , the Company advanced $4.7 million in new loans, reclassified $0.3 million in loans as related party and received $0.3 million in principal payments.

Other Real Estate Owned, Net

Other Real Estate Owned, Net	12 Months Ended
	Dec. 31, 2019
Other Real Estate [Abstract]
Other Real Estate Owned	Other Real Estate Owned, Net The following table provides a summary of the Company’s other real estate owned activity and balances for the periods presented: Year Ended December 31, 2019 2018 (Dollars in thousands) Balance, beginning of period $ 31 $ 2,308 Loans transferred to other real estate owned 403 65 Net change in valuation allowance (229 ) (34 ) Proceeds from sale of other real estate owned (125 ) (2,390 ) Gain on sale of REO 48 82 Balance, end of period $ 128 $ 31 The Company’s remaining other real estate owned property consists of one single-family residential property. For the years ended December 31, 2019 and 2018 , real estate owned gain on sale were approximately $48,000 and $82,000 and other expenses related to foreclosed assets were $170,000 and $27,000 , respectively. There was $42,000 and $34,000 recorded as a provision for unrealized losses at December 31, 2019 and 2018 , respectively. The Company had $1.7 million in consumer mortgage loans collateralized by residential real estate property for which formal foreclosure proceedings were in process as of December 31, 2019 .

Premises and Equipment, Net

Premises and Equipment, Net	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Premises and Equipment, Net	Premises and Equipment, Net Year-end premises and equipment were as follows: December 31, 2019 2018 (Dollars in thousands) Equipment, furniture, and software $ 5,459 $ 4,613 Leasehold improvements 1,372 1,795 Automobiles 202 202 7,033 6,610 Accumulated depreciation and amortization (3,774 ) (2,954 ) Total premises and equipment, net $ 3,259 $ 3,656 Depreciation expense was $0.9 million and $0.7 million for years ended December 31, 2019 and 2018 , respectively. Operating leases The Company leases all of its office facilities under operating lease arrangements. The leases provide that the Company pays real estate taxes, insurance, and certain other operating expenses applicable to the leased premises in addition to the monthly minimum payments. In the second quarter of 2019, the Company consolidated its La Mesa branch with the La Jolla branch and subleased the facilities to a third party. The weighted-average remaining lease term and discount rate were as follows: December 31, Weighted-average remaining lease term 3.0 years Weighted-average discount rate 4.21 % Rent expense was $1.4 million for the year ended December 31, 2018 . The components of lease expense for the year ended December 31, 2019 were as follows: Year Ended (Dollars in thousands) Operating lease cost $ 1,579 Variable lease cost 47 Short-term lease cost (1) 185 Sublease income (70 ) Total lease cost $ 1,741 ________________________ (1) Short-term lease cost are for leases with a term of one year or less including terms of one month or less per accounting policy election. Maturities of lease liabilities were as follows: December 31, Operating leases (Dollars in thousands) 2020 $ 1,676 2021 1,748 2022 1,548 2023 215 2024 26 Total lease payments 5,213 Less: imputed lease interest (332 ) Total lease liabilities $ 4,881 As of December 31, 2019 , the Company had no additional operating lease commitments for office facilities that have not yet commenced. Cash paid for amounts included in the measurement of operating lease liabilities was $1.5 million for the year ended December 31, 2019 .

Deposits

Deposits	12 Months Ended
	Dec. 31, 2019
Deposits [Abstract]
Deposits	Deposits The following table presents the composition of our deposits as of the dates presented: December 31, 2019 2018 (Dollars in thousands) Noninterest bearing demand accounts $ 1,343,667 $ 1,525,922 Interest bearing accounts: Interest bearing demand accounts 60,794 45,889 Money market and savings accounts 85,705 77,286 Certificates of deposit 324,488 29,736 Interest bearing accounts 470,987 152,911 Deposits held-for-sale: Noninterest bearing demand accounts — 55,891 Interest bearing accounts — 48,281 Deposits held-for-sale — 104,172 Total deposits $ 1,814,654 $ 1,783,005 Certificates of deposit at December 31, 2019 , are scheduled to mature as follows: Amount Year Ended December 31, (Dollars in thousands) 2020 $ 1,199 2021 422 2022 461 2023 97,346 2024 177,451 Thereafter 47,609 Total $ 324,488 Certificates of deposit that meet or exceed the FDIC insurance limit of $250,000 and over totaled approximately $0.1 million and $1.6 million at December 31, 2019 and 2018 , respectively. Deposits from officers, directors, and affiliates at December 31, 2019 and 2018 , were approximately $1.0 million and $1.3 million , respectively. The Company had $322.4 million , net of $2.6 million in unamortized premium, in callable brokered certificates of deposit at December 31, 2019 , with maturities ranging from four to six years . The Company had no brokered certificates of deposit at December 31, 2018 . The bank has the option to redeem the callable brokered certificates of deposit on a monthly basis without penalty. Premiums paid to acquire certificates of deposit are amortized in interest expense over the contractual life of the deposit or recognized sooner if the brokered certificates of deposit are called before the maturity date.

FHLB Advances and Other Borrowi

FHLB Advances and Other Borrowings	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
FHLB and Other Borrowings	FHLB Advances and Other Borrowings FHLB Advances The following table sets forth certain information on our FHLB advances during the periods presented: Year Ended December 31, 2019 2018 (Dollars in thousands) Amount outstanding at period-end $ 49,000 — Weighted average interest rate at period-end 1.66 % — Maximum month-end balance during the period $ 218,000 $ 15,000 Average balance outstanding during the period $ 28,205 $ 1,274 Weighted average interest rate during the period 1.94 % 1.49 % FHLB advances are secured with eligible collateral consisting of certain real estate loans. Advances from the FHLB are subject to the FHLB’s collateral and underwriting requirements, and as of December 31, 2019 and 2018 , were limited in the aggregate to 35% of the Company’s total assets. Loans with carrying values of approximately $875.9 million and $625.3 million were pledged to the FHLB as of December 31, 2019 and 2018 , respectively. Unused borrowing capacity based on the lesser of the percentage of total assets and pledged collateral was approximately $554.6 million and $472.3 million as of December 31, 2019 and 2018 , respectively. FRB Advances The Company is also approved to borrow through the Discount Window of the Federal Reserve Bank of San Francisco on a collateralized basis without any fixed dollar limit. Loans with a carrying value of approximately $10.1 million and $19.0 million were pledged to the FRB at December 31, 2019 and 2018 , respectively. The Company’s borrowing capacity under the Federal Reserve’s discount window program was $7.5 million as of December 31, 2019 . At December 31, 2019 and 2018 , there were no borrowings outstanding under any of these lines. Repurchase Agreements During the year ended December 31, 2019 , the Bank had repurchase agreements with brokers, accounted for as secured borrowings, with an average outstanding balance of $18.6 million . The repurchase agreements matured in July 2019 and as of December 31, 2019 there was no outstanding balance. There was no outstanding balance as of December 31, 2018 . Federal Funds Purchased The Company may borrow up to an aggregate $32.0 million , overnight on an unsecured basis from three of its correspondent banks. Access to these funds is subject to liquidity availability, market conditions and any negative material change in the Company’s credit profile. As of December 31, 2019 and 2018 , the Company had no outstanding balance of federal funds purchased.

Notes Payable

Notes Payable	12 Months Ended
	Dec. 31, 2019
Notes payable
Debt Instrument [Line Items]
Notes Payable	Notes Payable On January 29, 2016, the Company entered into a term loan with a commercial bank for a single principal advance of $8.0 million due to mature on January 29, 2021. Loan interest and principal is payable quarterly commencing April 2016 and accrues interest at an annual rate equal to 2.60% plus the greater of zero percent and the one-month LIBOR rate. The proceeds were used to redeem preferred stock and can be prepaid at any time. The outstanding principal balance at December 31, 2019 and 2018 was $3.7 million and $4.9 million respectively. Annual principal payments on outstanding borrowings are $1.1 million for 2020 and $2.6 million in 2021.

Subordinated Debentures, Net

Subordinated Debentures, Net	12 Months Ended
	Dec. 31, 2019
Subordinated Debentures
Debt Instrument [Line Items]
Subordinated Debentures, Net	Subordinated Debentures, Net A trust formed by the Company issued $12.5 million of floating rate trust preferred securities in July 2001 as part of a pooled offering of such securities. The Company issued subordinated debentures to the trust in exchange for its proceeds from the offering. The debentures and related accrued interest represent substantially all of the assets of the trust. The subordinated debentures bear interest at six-month LIBOR plus 375 basis points, which adjusts every six months in January and July of each year. Interest is payable semiannually. At December 31, 2019 , the interest rate for the Company’s next scheduled payment was 5.94% , based on six-month LIBOR of 2.19% . On any January 25 or July 25 the Company may redeem the 2001 subordinated debentures at 100% of principal amount plus accrued interest. The 2001 subordinated debentures mature on July 25, 2031. A second trust formed by the Company issued $3.0 million of trust preferred securities in January 2005 as part of a pooled offering of such securities. The Company issued subordinated debentures to the trust in exchange for its proceeds from the offering. The debentures and related accrued interest represent substantially all of the assets of the trust. The subordinated debentures bear interest at three-month LIBOR plus 185 basis points, which adjusts every three months. Interest is payable quarterly. At December 31, 2019 , the interest rate for the Company’s next scheduled payment was 3.74% , based on three-month LIBOR of 1.89% . On the 15th day of any March, June, September, or December, the Company may redeem the 2005 subordinated debentures at 100% of principal amount plus accrued interest. The 2005 subordinated debentures mature on March 15, 2035. The Company also retained a 3% minority interest in each of these trusts which is included in subordinated debentures. The balance of the equity in the trusts is comprised of mandatorily redeemable preferred securities. The subordinated debentures may be included in Tier I capital (with certain limitations applicable) under current regulatory guidelines and interpretations. The Company has the right to defer interest payments on the subordinated debentures from time to time for a period not to exceed five years .

Derivative and Hedging Activiti

Derivative and Hedging Activities	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative and Hedging Activities	Derivative and Hedging Activities The Company is exposed to certain risks relating to its ongoing business operations. The Company utilizes interest rate derivatives as part of its asset liability management strategy to help manage its interest rate risk position. The notional amount of the derivative does not represent amounts exchanged by the parties. The amount exchanged is determined by reference to the notional amount and the other terms of the individual derivative agreements. In accordance with accounting guidance, changes in the fair value of derivatives designated and that qualify as cash flow hedges are initially recorded in other comprehensive income (“OCI”), reclassified into earnings in the same period or periods during which the hedged transaction affects earnings and is presented in the same income statement line item as the earnings effect of the hedged item. The Company assesses the effectiveness of each hedging relationship by comparing the changes in cash flows of the derivative hedging instrument with the changes in cash flows of the designated hedged transactions. The initial fair value of hedge components excluded from the assessment of effectiveness is recognized in the statement of financial condition under a systematic and rational method over the life of the hedging instrument and is presented in the same income statement line item as the earnings effect of the hedged item. Any difference between the change in the fair value of the hedge components excluded from the assessment of effectiveness and the amounts recognized in earnings is recorded as a component of other comprehensive income. Interest rate floor. In 2019, the Company entered into 20 interest rate floor agreements (the "Floor Agreements") for a total notional amount of $400.0 million to hedge cash flow receipts on cash and securities or loans, if needed. The Floor Agreements expire on various dates in April 2024 and June 2029. The Company utilizes one-month LIBOR and three-month LIBOR interest rate floors as hedges against adverse changes in cash flows on the designated cash, securities or loans attributable to fluctuations in the federal funds rate or three-month LIBOR below 2.50% or 2.25% , as applicable. The Floor Agreements were determined to be fully effective during all periods presented and, as such, no amount of ineffectiveness has been included in net income. The upfront fee paid to the counterparty in entering into these Floor Agreements was approximately $20.8 million . Interest rate cap. In 2012 the Company entered into a $12.5 million and a $3.0 million notional forward interest rate cap agreement (the “Cap Agreements”) to hedge its variable rate subordinated debentures. The Cap Agreements expire July 25, 2022 and March 15, 2022, respectively. The Company utilizes interest rate caps as hedges against adverse changes in cash flows on the designated preferred trusts attributable to fluctuations in three-month LIBOR beyond 0.50% for the $3.0 million subordinated debenture and six-month LIBOR beyond 0.75% for the $12.5 million subordinated debenture. The Cap Agreements were determined to be fully effective during all periods presented and, as such, no amount of ineffectiveness has been included in net income. The upfront fee paid to the counterparty in entering into these Cap Agreements was approximately $2.5 million . The Company held approximately zero and $1.2 million of restricted cash at December 31, 2019 and 2018 , respectively, which served as collateral for the expected payments under these Cap Agreements; such cash fluctuates based on the expected present value of the future payments and will be refunded to the counterparty upon termination or maturity of the Cap Agreements. The table below presents the fair value of the Company’s derivative financial instruments as well as the classification within the consolidated balance sheets. December 31, 2019 2018 Balance Sheet Fair Value Balance Sheet Fair Value (Dollars in thousands) Derivatives designated as hedging instruments: Cash flow hedge interest rate floor Derivative assets $ 23,054 Derivative assets $ — Cash flow hedge interest rate cap Derivative assets 386 Derivative assets 999 The following table summarizes the effects of derivatives in cash flow hedging relationships designated as hedging instruments on the Company’s consolidated statements of operations for the periods presented: Amount of Gain (Loss) Recognized in OCI Location of Gain (Loss) Reclassified from Accumulated OCI into Income Amount of Gain (Loss) Reclassified from Accumulated OCI into Income Year Ended Year Ended 2019 2018 2019 2018 (Dollars in thousands) Derivatives designated as hedging instruments: Cash flow hedge interest rate floor $ 2,006 $ — Interest income - Other interest earning assets $ (355 ) $ — Cash flow hedge interest rate floor 882 — Interest income - Securities (635 ) — Cash flow hedge interest rate cap (392 ) 167 Interest expense - Subordinated debentures (167 ) (134 ) Cash flow hedge interest rate swap — 24 Interest expense - FHLB advances — 54 The Company estimates that approximately $0.2 million of net derivative gain included in OCI will be reclassified into earnings within the next 12 months . No gain or loss was reclassified from OCI into earnings as a result of forecasted transactions that failed to occur during the periods presented.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense consists of the following for the periods presented: Year Ended December 31, 2019 2018 (Dollars in thousands) Current provision Federal $ 6,163 $ 5,298 State 3,304 2,922 9,467 8,220 Federal deferred tax (benefit) expense 241 (117 ) State deferred tax (benefit) expense 118 (37 ) 359 (154 ) Income tax expense $ 9,826 $ 8,066 Comparison of the federal statutory income tax rates to the Company’s effective income tax rates for the periods presented are as follows: Year Ended December 31, 2019 2018 Amount Rate Amount Rate (Dollars in thousands) Statutory federal tax $ 7,281 21.0 % $ 6,384 21.0 % State tax, net of federal benefit 2,697 7.8 % 2,304 7.6 % Tax credits (170 ) (0.5 )% (170 ) (0.6 )% Excess tax benefit from stock-based compensation (88 ) (0.3 )% (469 ) (1.6 )% Other items, net 106 0.3 % 17 0.1 % Actual tax expense $ 9,826 28.3 % $ 8,066 26.5 % Income tax expense was $9.8 million for the year ended December 31, 2019 compared to $8.1 million for the year ended December 31, 2018 . The increase was primarily related to increased pre-tax income. The effective tax rates for the year ended December 31, 2019 and 2018 were 28.3% and 26.5% , respectively. The increase in the effective rate from 2018 to 2019 was primarily related to lower excess tax benefit from stock-based compensation. The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and liabilities included in other assets are as follows: December 31, 2019 2018 (Dollars in thousands) Deferred tax assets Allowance for loan losses $ 1,772 $ 1,921 Derivatives and securities available-for-sale — 825 Accrued vacation pay 368 333 Accrued bonus 394 333 Nonaccrual loan interest 149 98 State taxes 633 552 Operating lease liabilities 1,397 232 Other 356 269 Deferred tax assets 5,069 4,563 Deferred tax liabilities Basis difference in fixed assets (706 ) (367 ) Derivatives and securities available-for-sale (2,570 ) — Operating lease right-of-use assets (1,308 ) — FHLB stock dividends (101 ) (100 ) Deferred loan fees (501 ) (645 ) Other (307 ) (122 ) Deferred tax liabilities (5,493 ) (1,234 ) Deferred tax (liability) asset, net $ (424 ) $ 3,329 The net deferred tax liability for December 31, 2019 is recorded in “Other liabilities” in the Company’s consolidated statements of financial condition. At each reporting date, the Company evaluates the positive and negative evidence used to determine the likelihood of realization of all its deferred tax assets. Based on this evaluation, management has concluded that deferred tax assets are more-likely-than-not to be realized and therefore no valuation allowance is required at December 31, 2019 and 2018 . The Company has no unrecognizable tax benefits recorded at December 31, 2019 and 2018 and does not expect the total amount of unrecognized tax benefits to significantly increase or decrease in the next twelve months. Additionally, the Company had no material interest or penalties paid or accrued related to income taxes reported in the income statement for the years ended December 31, 2019 and 2018 . The Company and its subsidiary are subject to U.S. federal income taxes as well as income taxes of various other state income taxes. The Company is no longer subject to examination by taxing authorities for years before 2016 for federal jurisdiction and for years before 2015 for state jurisdictions.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Off-Balance Sheet Items In the normal course of business, the Company enters into various transactions, which, in accordance with GAAP, are not included in the consolidated statements of financial condition. The Company enters into these transactions to meet the financing needs of its customers. These transactions include commitments to extend credit and issue letters of credit, which involve, to varying degrees, elements of credit risk and interest rate risk exceeding the amounts recognized on the consolidated statements of financial condition. The Company’s exposure to credit loss is represented by the contractual amounts of these commitments. The same credit policies and procedures are used in making these commitments as for on-balance sheet instruments. The Company is not aware of any accounting loss to be incurred by funding these commitments, however, an allowance for off-balance sheet credit risk is recorded in other liabilities on the statements of financial condition. The allowance for these commitments amounted to approximately $0.1 million as of December 31, 2019 and 2018 . The Company’s commitments associated with outstanding letters of credit and commitments to extend credit expiring by period as of the date indicated are summarized below. Since commitments associated with letters of credit and commitments to extend credit may expire unused, the amounts shown do not necessarily reflect the actual future cash funding requirements. December 31, 2019 2018 (Dollars in thousands) Unfunded lines of credit $ 47,433 $ 71,398 Letters of credit 655 10 Total credit extension commitments $ 48,088 $ 71,408 Unfunded lines of credit represent unused credit facilities to the Company’s current borrowers that represent no change in credit risk that exist in the Company’s portfolio. Lines of credit generally have variable interest rates. Letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. In the event of nonperformance by the customer in accordance with the terms of the agreement with the third party, the Company would be required to fund the commitment. The maximum potential amount of future payments the Company could be required to make is represented by the contractual amount of the commitment. If the commitment is funded, the Company would be entitled to seek recovery from the client from the underlying collateral, which can include commercial real estate, physical plant and property, inventory, receivables, cash and/or marketable securities. The Company’s policies generally require that letter of credit arrangements contain security and debt covenants like those contained in loan agreements and our credit risk associated with issuing letters of credit is essentially the same as the risk involved in extending loan facilities to our customers. The Company minimizes its exposure to loss under letters of credit and credit commitments by subjecting them to the same credit approval and monitoring procedures used for on-balance sheet instruments. The effect on the Company’s revenue, expenses, cash flows and liquidity of the unused portions of these letters of credit commitments cannot be precisely predicted because there is no guarantee that the lines of credit will be used. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract, for a specific purpose. Commitments generally have variable interest rates, fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts disclosed above do not necessarily represent future cash requirements. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained if deemed necessary by the Company is based on management’s credit evaluation of the customer. Litigation The Company is involved in various matters of litigation which have arisen in the ordinary course of its business. In the opinion of management, the disposition of such pending litigation will not have a material effect on the Company’s financial statements.

Stock-based Compensation

Stock-based Compensation	12 Months Ended
	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Stock-based Compensation	Stock-based Compensation In June 2018, the Company adopted the 2018 Equity Compensation Plan, or 2018 Plan, that permits the Compensation Committee, in its sole discretion, to grant various forms of incentive awards. Under the 2018 Plan, the Compensation Committee has the power to grant stock options, stock appreciation rights, or SARs, restricted stock and restricted stock units. The number of shares that may be issued pursuant to awards under the 2018 Plan is 1,596,753 . In 2010, the Company adopted an equity compensation plan, or 2010 Plan, that provides for the grant of stock options to employees, directors, and other persons referred to in Rule 701 under the U.S. Securities Act of 1933. The number of shares that may be issued pursuant to awards under the 2010 Plan is 730,784 . The Compensation Committee of the Company’s Board of Directors is responsible for administrating the 2010 Plan and determining the terms of all awards under it, including their vesting, except that in the case of a change in control of the Company all options granted under the 2010 Plan shall become 100% vested. As of December 31, 2018, there are no shares available for issuance under the 2010 Plan. In accordance with authoritative guidance for stock-based compensation, compensation expense is recognized only for those shares expected to vest, based on the Company’s historical experience and future expectations. The Company has elected a policy of estimating expected forfeitures. Total compensation cost charged against income was $177,000 and $112,000 for the years ended December 31, 2019 and 2018 , respectively. The total income tax benefit was $12,000 and $10,000 , for the years ended December 31, 2019 and 2018 , respectively. Stock Options Stock options issued under the 2018 Plan and 2010 Plan generally have terms of 10 years , with vesting based only on performing service through the vest date, which are generally graded over three to four years . Stock options are forfeited when the participant terminates service and vested options are exercisable within 60 days . Stock options are nontransferable and non-hedgeable. Stock options are issued at an exercise price not less than 100% of the fair market value of a share of the Company’s common stock on the date of grant. Stock options are expensed on a straight-line basis over the grant vesting period, which is considered to be the requisite service period. The fair value of each option award is estimated on the date of grant using a closed form option valuation (Black-Scholes) model that uses the assumptions noted in the table below. Expected volatilities are based on historical volatilities of the Company’s common stock, historical volatilities of a peer group or a combination of both. The Company uses the simplified method to estimate expected term for stock options because the Company does not have sufficient historical exercise data to provide a reasonable basis upon which to estimate expected term. The risk-free interest rate for the expected term of the option is based on the U.S. Treasury yield curve in effect at the time of the grant. The fair value of the option grants in 2019 and 2018 and were estimated on the date of the grant using the Black-Scholes option pricing model with the assumptions presented below: Year Ended December 31, 2019 2018 Weighted-average assumptions used: Risk-free interest rate 1.67 % 2.82 % Expected term 6.25 years 6.5 years Expected stock price volatility 30.88 % 10.72 % Dividend yield 0.00 % 0.00 % Weighted-average grant date fair value $ 5.43 $ 2.44 A summary of stock option activity as of December 31, 2019 and changes during the year then ended is presented below: Number of Weighted Weighted (in years) Aggregate (in thousands) Outstanding at January 1, 2019 816,616 $ 5.54 Granted 176,198 16.09 Exercised (73,457 ) 5.78 Forfeited/Expired (1,500 ) 12.00 Outstanding at December 31, 2019 917,857 $ 7.54 4.3 years $ 7,717 Exercisable at December 31, 2019 681,909 $ 4.97 2.5 years $ 7,460 Vested or Expected to Vest at December 31, 2019 886,054 $ 7.25 4.1 years $ 7,703 The intrinsic value for stock options is calculated based on the exercise price of the underlying awards and the book value of the Company’s common stock as of the reporting date. The intrinsic value of options exercised was approximately $0.5 million and $1.8 million for the years ended December 31, 2019 and 2018 , respectively. The tax benefit from option exercises was approximately $114.0 thousand and $469.0 thousand , for the years ended December 31, 2019 and 2018 , respectively. As of December 31, 2019 , there was $0.9 million of total unrecognized compensation cost related to nonvested stock options which is expected to be recognized over a weighted-average period of 3.6 years. Restricted Stock Units Restricted stock unit awards are valued at the market price of a share of the Company’s common stock on the date of grant. In general, these awards vest over one to four years from the date of grant and are expensed on a straight-line basis over that period, which is considered to be the requisite service period. A summary of the status of the Company’s nonvested restricted stock unit awards as of December 31, 2019 , and changes during the year then ended, is presented below: Number of Shares Weighted-Average Nonvested at January 1, 2019 — $ — Granted 82,658 16.09 Canceled or Forfeited (31 ) 16.09 Nonvested at December 31, 2019 82,627 $ 16.09 At December 31, 2019 , there was approximately $1.1 million of total unrecognized compensation expense related to nonvested restricted stock unit awards, which is expected to be recognized over a weighted-average period of 3.0 years. There were no awards that vested during the year ended December 31, 2019 .

Employee Benefit Plan

Employee Benefit Plan	12 Months Ended
	Dec. 31, 2019
Retirement Benefits [Abstract]
Employee Benefit Plan	Employee Benefit Plan The Company has a 401(k) plan in which approximately 91% of all employees participate. Employees may contribute a percentage of their compensation subject to certain limits based on Federal tax laws. During the years ended December 31, 2019 and 2018 , the Company made an elective matching contribution quarterly up to 25% of deferrals to a maximum of the first 6% of the employee’s compensation contributed to the plan. Additionally, the Company had the option to make an elective annual discretionary contribution as determined annually by management. For each of the years ended December 31, 2019 and 2018 , contribution expense attributed to the plan amounted to approximately $0.2 million .

Regulatory Capital

Regulatory Capital	12 Months Ended
	Dec. 31, 2019
Banking and Thrift [Abstract]
Regulatory Capital	Regulatory Capital 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. The final rules implementing Basel Committee on Banking Supervision’s capital guidelines for U.S. banks (Basel III rules) became effective for the Company on January 1, 2015 with full compliance with all of the requirements being phased in over a multi-year schedule, and fully phased in by January 1, 2019. Under the Basel III rules, the Company must hold a capital conservation buffer above the adequately capitalized risk-based capital ratios. As of January 1, 2019, the capital conservation buffer had fully phased in to 2.50%. Management believes as of December 31, 2019 , the Company and the Bank meet all capital adequacy requirements to which they are subject. 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. For the periods presented, 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 capital amounts and ratios for the Company and the Bank as of December 31, 2019 and 2018 , are presented in the following tables: Actual Minimum capital To be well Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) December 31, 2019 The Company Tier 1 leverage ratio $ 240,135 11.23 % $ 85,501 4.00 % N/A N/A Common equity tier 1 capital ratio 224,635 24.52 % 41,233 4.50 % N/A N/A Tier 1 risk-based capital ratio 240,135 26.21 % 54,978 6.00 % N/A N/A Total risk-based capital ratio 246,447 26.90 % 73,304 8.00 % N/A N/A The Bank Tier 1 leverage ratio 224,605 10.52 % 85,399 4.00 % 106,749 5.00 % Common equity tier 1 capital ratio 224,605 24.55 % 41,163 4.50 % 59,458 6.50 % Tier 1 risk-based capital ratio 224,605 24.55 % 54,884 6.00 % 73,179 8.00 % Total risk-based capital ratio 230,917 25.24 % 73,179 8.00 % 91,474 10.00 % December 31, 2018 The Company Tier 1 leverage ratio $ 208,807 9.00 % $ 92,812 4.00 % N/A N/A Common equity tier 1 capital ratio 193,307 23.10 % 37,650 4.50 % N/A N/A Tier 1 risk-based capital ratio 208,807 24.96 % 50,200 6.00 % N/A N/A Total risk-based capital ratio 215,638 25.77 % 66,933 8.00 % N/A N/A The Bank Tier 1 leverage ratio 197,175 8.51 % 92,637 4.00 % 115,796 5.00 % Common equity tier 1 capital ratio 197,175 23.68 % 37,472 4.50 % 54,127 6.50 % Tier 1 risk-based capital ratio 197,175 23.68 % 49,963 6.00 % 66,618 8.00 % Total risk-based capital ratio 204,006 24.50 % 66,618 8.00 % 83,272 10.00 % The Bank is restricted as to the amount of dividends that it can pay to the Company. Dividends declared in excess of the lesser of the Bank’s undivided profits or the Bank’s net income for its last three fiscal years less the amount of any distribution made to the Bank’s shareholders during the same period must be approved by the California DBO. Also, the Bank may not pay dividends that would result in capital levels being reduced below the minimum requirements shown above.

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Fair Value	Fair Value Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an 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. This standard’s fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value: 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 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. Financial Instruments Required To Be Carried At Fair Value The following is a description of valuation methodologies used for assets and liabilities recorded at fair value: Investments . The fair values of securities available-for-sale are determined by obtaining quoted prices on nationally recognized securities exchanges (Level 1) or matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted prices for specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities (Level 2). Derivatives . The Company’s derivative assets and liabilities are carried at fair value as required by GAAP. The estimated fair values of the derivative assets and liabilities are based on current market prices for similar instruments. Given the meaningful level of secondary market activity for derivative contracts, active pricing is available for similar assets and accordingly, the Company classifies its derivative assets and liabilities as Level 2. Impaired loans (collateral-dependent) . The Company does not record impaired loans at fair value on a recurring basis. However, from time to time, fair value adjustments are recorded on these loans to reflect (1) partial write-downs, through charge-offs or specific allowances, that are based on the current appraised or market-quoted value of the underlying collateral or (2) the full charge-off of the loan carrying value. In some cases, the properties for which market quotes or appraised values have been obtained are located in areas where comparable sales data is limited, outdated, or unavailable. Fair value estimates for collateral-dependent impaired loans are obtained from real estate brokers or other third-party consultants. Adjustments are routinely made in the appraisal process by the appraisers to adjust for differences between the comparable sales and income data available and such adjustments are typically significant (Level 3). Impaired loans presented in the table below as of December 31, 2019 and 2018 , include impaired loans with specific allowances as well as impaired loans that have been partially charged-off. Other real estate owned . Fair value estimates for foreclosed real estate are obtained from real estate brokers or other third-party consultants (Level 3). When a current appraised value is not available or management determines the fair value of the collateral is further impaired below the appraised value as a result of known changes in the market or the collateral and there is no observable market price, such valuation inputs result in a fair value measurement that is categorized as a (Level 3) measurement. To the extent a negotiated sales price or reduced listing price represents a significant discount to an observable market price, such valuation input would result in a fair value measurement that is also considered a (Level 3) measurement. The following tables provide the hierarchy and fair value for each class of assets and liabilities measured at fair value at December 31, 2019 and 2018 . There were no transfers of assets between Level 1 and Level 2 of the fair value hierarchy for the periods presented. As of December 31, 2019 and 2018 , assets and liabilities measured at fair value on a recurring basis are as follows: Fair Value Measurements Using Quoted Prices Significant Other Significant Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2019 Assets Securities available-for-sale $ — $ 897,766 $ — $ 897,766 Derivative assets — 23,440 — 23,440 $ — $ 921,206 $ — $ 921,206 Fair Value Measurements Using Quoted Prices Significant Other Significant Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2018 Assets Securities available-for-sale $ — $ 357,178 $ — $ 357,178 Derivative assets — 999 — 999 $ — $ 358,177 $ — $ 358,177 As of December 31, 2019 and 2018 , assets measured at fair value on a non-recurring basis are summarized as follows: Fair Value Measurements Using Quoted Prices Significant Other Significant Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2019 Assets Impaired loans: Real estate: One-to-four family $ — $ — $ 56 $ 56 Reverse mortgage — — 308 308 Other real estate owned — — 128 128 $ — $ — $ 492 $ 492 Fair Value Measurements Using Quoted Prices Significant Other Significant Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2018 Assets Impaired loans: Real estate: One-to-four family $ — $ — $ 24 $ 24 Reverse mortgage — — 379 379 Other real estate owned — — 31 31 $ — $ — $ 434 $ 434 Financial Instruments Not Required To Be Carried At Fair Value FASB ASC Topic 825, Financial Instruments , requires the disclosure of the estimated fair value of financial instruments. The Company’s estimated fair value amounts have been determined by the Company using available market information and appropriate valuation methodologies. However, considerable judgment is required to develop the estimates of fair value. Accordingly, the estimates are not necessarily indicative of the amounts the Company could have realized in a current market exchange. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. The following tables present information about the Company’s assets and liabilities that are not measured at fair value in the consolidated statements of financial condition as of the dates presented: Carrying Fair Value Measurements Using Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2019 Financial assets: Cash and due from banks $ 1,579 $ 1,579 $ — $ — $ 1,579 Interest earning deposits 132,025 132,025 — — 132,025 Loans held-for-investment, net 664,622 — — 666,272 666,272 Loans held-for-sale 375,922 — 376,126 — 376,126 Accrued interest receivable 5,950 86 3,643 2,221 5,950 Financial liabilities: Deposits $ 1,814,654 $ — $ 1,826,100 $ — $ 1,826,100 FHLB advances 49,000 — 49,000 — 49,000 Notes payable 3,714 — 3,714 — 3,714 Subordinated debentures 15,816 — 15,203 — 15,203 Accrued interest payable 559 — 559 — 559 Carrying Fair Value Measurements Using Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2018 Financial assets: Cash and due from banks $ 4,177 $ 4,177 $ — $ — $ 4,177 Interest earning deposits 670,243 670,243 — — 670,243 Securities held-to-maturity 73 — 72 — 72 Loans held-for-investment, net 592,781 — — 591,315 591,315 Loans held-for-sale 350,636 — 351,115 — 351,115 Accrued interest receivable 5,770 571 1,430 3,769 5,770 Financial liabilities: Deposits $ 1,678,833 $ — $ 1,621,138 $ — $ 1,621,138 Deposits held-for-sale 104,172 — 95,215 — 95,215 Notes payable 4,857 — 4,857 — 4,857 Subordinated debentures 15,802 — 15,414 — 15,414 Accrued interest payable 451 — 451 — 451

Earnings Per Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The computation of basic and diluted earnings per share is shown below. Year Ended 2019 2018 (Dollars in thousands, except per share data) Basic Net income $ 24,846 $ 22,333 Weighted average common shares outstanding 17,957 16,543 Basic earnings per common share $ 1.38 $ 1.35 Diluted Net income $ 24,846 $ 22,333 Weighted average common shares outstanding for basic earnings per common share 17,957 16,543 Add: Dilutive effects of stock-based awards 428 480 Average shares and dilutive potential common shares 18,385 17,023 Dilutive earnings per common share $ 1.35 $ 1.31 Stock options for 127,000 and 85,000 shares of common stock were not considered in computing diluted earnings per share for the years ended December 31, 2019 and 2018 , respectively, because they were anti-dilutive.

Shareholders' Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Shareholders' Equity	Shareholders’ Equity The Company’s Articles of Incorporation, as amended, or Articles authorize the Company to issue up to (i) 125,000,000 shares of Class A Common Stock, par value $0.01 per share (“Class A Common Stock”), (ii) 25,000,000 shares of Class B Non-Voting Common Stock, par value $0.01 per share (“Class B Non-Voting Common Stock”), and (iii) 10,000,000 shares of Preferred Stock, par value $0.01 per share. Preferred Stock The Company, upon authorization of the board of directors, may issue shares of one or more series of preferred stock from time to time. The board of directors may, without any action by holders of Class A and Class B Common Stock or, except as may be otherwise provided in the terms of any series of preferred stock of which there are shares outstanding, holders of preferred stock adopt resolutions to designate and establish a new series of preferred stock. Upon establishing such a series of preferred stock, the board will determine the number of shares of preferred stock of that series that may be issued and the rights and preferences of that series of preferred stock. The board of directors has not designated or established any series of preferred stock. The rights of any series of preferred stock may include, among others, general or special voting rights; preferential liquidation or preemptive rights; preferential cumulative or noncumulative dividend rights; redemption or put rights; and conversion or exchange rights. Common Stock Voting . Each holder of Class A Common Stock is entitled to one vote for each share on all matters submitted to a vote of shareholders, except as otherwise required by law and subject to the rights and preferences of the holders of any outstanding shares of our preferred stock. The members of the Company’s board of directors are elected by a plurality of the votes cast. The Company’s Articles expressly prohibit cumulative voting. Class B Non-Voting Common Stock. Class B Non-Voting Common Stock is non-voting while held by the initial holder with certain limited exceptions. Each share of Class B Non-Voting Common Stock will automatically convert into a share of Class A Common Stock upon certain sales or transfers by the initial holder of such shares including to an unaffiliated third-party and in a widely dispersed public offering. If Class B Non-Voting Common Stock is sold or transferred to an affiliate of the initial holder, the Class B Non-Voting Common Stock would not convert into Class A Common Stock. On February 23, 2018, the Company completed a private placement of 9.5 million shares of the Company’s Class A common stock, generating gross proceeds of $114.0 million . Costs incurred with the private placement were $6.1 million . The private placement raised net proceeds of $107.9 million of common equity, $60.0 million of which was contributed as equity capital to the Bank during the first quarter of 2018. Proceeds from this placement also funded a stock repurchase of 997,506 shares of Class A and Class B common stock for $11.4 million , resulting in a net increase in shareholders’ equity of $96.5 million . In March 2018, 1,165,000 shares of Class B common stock were sold by the Company’s shareholders and reissued as Class A common stock. The Company completed its IPO of 3.3 million shares of its Class A common stock at a public offering price of $12.00 per share on November 7, 2019. The common stock is traded on the New York Stock Exchange under the ticker symbol “SI.” The IPO generated aggregate gross proceeds to the Company of $9.9 million before deducting underwriting discounts and offering expenses, and net proceeds to the Company of $6.5 million after deducting underwriting discounts and offering expenses. Of the offered shares, 824,605 shares were offered by Silvergate and 2,508,728 shares were offered by selling shareholders. On November 15, 2019, the underwriters purchased an additional 499,999 shares of the Company’s Class A common stock from the Company’s selling shareholders in connection with the exercise in full of their option to purchase additional shares. The Company did not receive any proceeds from the sale of shares by the selling shareholders. The Company intends to use the net proceeds to support continued growth, including organic growth and for general corporate purposes, which could include repayment of long-term debt, future acquisitions and other growth initiatives. Accumulated Other Comprehensive Income The Company presents comprehensive income in accordance with FASB ASC Topic 220, Comprehensive Income , that requires the disclosure of comprehensive income or loss and its components. Other comprehensive income (loss) includes unrealized gains and losses on securities available-for-sale and the change in the fair value of cash flow hedges, net of deferred tax effects, which are also recognized as a separate component of equity. The following table shows for the years ended December 31, 2019 and 2018 , changes in the balances of each component of accumulated other comprehensive income, net of tax: Unrealized Gains/ Derivative Accumulated (Dollars in thousands) Beginning balance, January 1, 2018 $ (756 ) $ (461 ) $ (1,217 ) Current period other comprehensive (loss) income (1,029 ) 185 (844 ) Ending balance, December 31, 2018 (1,785 ) (276 ) (2,061 ) Current period other comprehensive income before reclassification 6,373 2,606 8,979 Amounts reclassified from accumulated other comprehensive income (517 ) — (517 ) Ending balance, December 31, 2019 $ 4,071 $ 2,330 $ 6,401

Parent Company Financial Inform

Parent Company Financial Information	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Parent Company Financial Information	Parent Company Financial Information Condensed financial information for the Corporation (parent company only) is as follows: Statements of Financial Condition December 31, 2019 2018 (Dollars in thousands) ASSETS Cash and due from banks $ 19,086 $ 15,355 Investments in subsidiaries 231,927 195,872 Other assets 816 2,904 Total assets $ 251,829 $ 214,131 LIABILITIES AND SHAREHOLDERS’ EQUITY Notes payable $ 3,714 $ 4,857 Subordinated debentures, net 15,816 15,802 Accrued expenses and other liabilities 1,263 2,226 Total liabilities 20,793 22,885 Commitments and contingencies Preferred stock — — Common stock 187 178 Additional paid-in capital 132,138 125,665 Retained earnings 92,310 67,464 Accumulated other comprehensive loss 6,401 (2,061 ) Total shareholders’ equity 231,036 191,246 Total liabilities and shareholders’ equity $ 251,829 $ 214,131 Statements of Operations Year Ended 2019 2018 (Dollars in thousands) Total interest income $ 29 $ 27 Interest expense Notes payable and other 224 405 Subordinated debentures 1,072 915 Total interest expense 1,296 1,320 Dividends from subsidiaries — 525 Noninterest expense Salaries and employee benefits 957 652 Occupancy and equipment 92 61 Communications and data processing 173 89 Professional services 687 848 Other general and administrative 127 65 Total noninterest expense 2,036 1,715 Loss before income taxes and equity in undistributed earnings of subsidiaries (3,303 ) (2,483 ) Income tax benefit (895 ) (793 ) Equity in undistributed earnings of subsidiaries 27,254 24,023 Net income $ 24,846 $ 22,333 Statements of Cash Flows Year Ended 2019 2018 (Dollars in thousands) Cash flows from operating activities Net income $ 24,846 $ 22,333 Adjustments to reconcile net income to net cash used in operating activities: Equity in undistributed earnings of subsidiaries (27,254 ) (24,023 ) Other, net 403 370 Changes in operating assets and liabilities: Other assets 1,538 (1,736 ) Accrued expenses and other liabilities (944 ) 918 Net cash used in operating activities (1,411 ) (2,138 ) Cash flows from investing activities Investments in subsidiaries — (80,000 ) Net cash used in investing activities — (80,000 ) Cash flows from financing activities Payments made on notes payable (1,143 ) (1,143 ) Proceeds from issuance of common stock, net 6,454 107,884 Repurchase of common stock — (11,371 ) Other, net (169 ) (608 ) Net cash provided by financing activities 5,142 94,762 Net increase in cash and cash equivalents 3,731 12,624 Cash and cash equivalents, beginning of year 15,355 2,731 Cash and cash equivalents, end of year $ 19,086 $ 15,355

Quarterly Financial Data (Unaud

Quarterly Financial Data (Unaudited)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Data (Unaudited)	Quarterly Financial Data (Unaudited) The following is a summary of selected financial data presented below by quarter for the periods indicated: Three Months Ended March 31, June 30, September 30, December 31, (Dollars in thousands, except per share data) 2019: Interest income $ 20,063 $ 19,472 $ 21,388 $ 20,112 Interest expense 747 1,904 2,945 4,482 Net interest income 19,316 17,568 18,443 15,630 Provision for (reversal of) loan losses 267 152 (858 ) — Net interest income after provision 19,049 17,416 19,301 15,630 Noninterest income 7,871 2,154 2,599 3,130 Noninterest expense 13,486 12,721 12,611 13,660 Net income before income taxes 13,434 6,849 9,289 5,100 Income tax expense 3,998 1,693 2,633 1,502 Net income $ 9,436 $ 5,156 $ 6,656 $ 3,598 Basic earnings per share $ 0.53 $ 0.29 $ 0.37 $ 0.20 Diluted earnings per share $ 0.52 $ 0.28 $ 0.36 $ 0.19 Three Months Ended March 31, June 30, September 30, December 31, (Dollars in thousands, except per share data) 2018: Interest income $ 15,611 $ 16,833 $ 18,707 $ 21,601 Interest expense 870 784 737 738 Net interest income 14,741 16,049 17,970 20,863 Provision for (reversal of) loan losses 143 5 — (1,675 ) Net interest income after provision 14,598 16,044 17,970 22,538 Noninterest income 1,387 2,001 2,184 1,991 Noninterest expense 11,086 11,843 11,417 13,968 Net income before income taxes 4,899 6,202 8,737 10,561 Income tax expense 1,356 1,711 2,458 2,541 Net income $ 3,543 $ 4,491 $ 6,279 $ 8,020 Basic earnings per share $ 0.28 $ 0.25 $ 0.35 $ 0.45 Diluted earnings per share $ 0.27 $ 0.25 $ 0.34 $ 0.44

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In February 2020, the Company sold $200.0 million notional amount of one-month LIBOR and three-month LIBOR interest rate floors with a strike of 2.50% for $13.0 million . The Company discontinued hedge accounting for these instruments and will amortize the net gain of approximately $8.4 million over the weighted-average remaining term of 4.1 years . In January and March 2020, the Company called $186.1 million of brokered certificates of deposit, which had a total unamortized premium expense of $1.3 million . The Company replaced the certificates of deposit by reissuing $122.1 million of callable brokered certificates of deposit and a 5 -year FHLB term advance of $64.0 million , increasing the weighted-average maturity of the aggregate balance of $325.0 million of liabilities associated with the hedging strategy to 4.9 years with an expected all-in rate of 1.76% , compared to 4.6 years and 2.29% , respectively, as of December 31, 2019. In March 2020, the Company sold $12.8 million in fixed-rate commercial mortgage-backed securities and recognized a gain of approximately $1.2 million .

Nature of Business and Summar_2

Nature of Business and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Nature of Business	Nature of Business The accompanying consolidated financial statements include the accounts of Silvergate Capital Corporation, a Maryland corporation and its wholly-owned subsidiary, Silvergate Bank (the “Bank”), collectively referred to as (the “Company”). The Bank was incorporated in 1987 and commenced business in 1988 under the California Financial Code as an industrial bank. In February 2009 the Bank converted its charter to a California commercial bank, which gave it the added authority to accept demand deposits. At the same time, the Company also became a registered bank holding company under the federal Bank Holding Company Act. The Bank became a member of the Federal Reserve System in December 2012. The Bank is subject to regulation by the California Department of Business Oversight (“DBO”), and the Federal Reserve Bank of San Francisco (“FRB”), and its deposits are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to applicable legal limits. The Bank provides financial services that include commercial banking, commercial and residential real estate lending, mortgage warehouse lending and commercial business lending. The Bank’s primary market is California, but it purchases and originates loans and solicits deposits throughout the Unites States. The lending of the Bank is concentrated in two primary niches: single-family residential real estate and commercial real estate (including multi-family residential properties). In the past, the Bank has also purchased reverse mortgage loans to individuals and has been approved by the Federal Housing Administration (“FHA”) to participate in its administered programs. In mid-2014, the Bank ceased purchases of reverse mortgage loans and, began selling its remaining loans in the secondary market.
Basis of Presentation	Basis of Presentation The consolidated financial statements include the accounts of the Company and all other entities in which it has a controlling financial interest. All significant intercompany accounts and transactions have been eliminated in consolidation. Unless the context requires otherwise, all references to the Company include its wholly owned subsidiaries. The accounting and reporting policies of the Company are based upon Generally Accepted Accounting Principles (“GAAP”) and conform to predominant practices within the financial services industry. Significant accounting policies followed by the Company are presented below.
Reclassifications	Reclassifications Certain immaterial reclassifications have been made to the consolidated financial statements to conform to the current year’s presentation.
Use of estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts and the disclosure of contingent amounts in the Company’s financial statements and the accompanying notes. Actual results could materially differ from those estimates.
Cash and cash equivalents	Cash and Cash Equivalents Cash equivalents consist of federal funds sold and other short-term investments with original maturities of three months or less. The Company maintains amounts due from Banks which exceed federally insured limits. The Company has not experienced any losses in such accounts. Net cash flows are reported for customer loan and deposit transactions, interest bearing deposits in other financial institutions and fed funds sold.
Securities	Securi ties Management determines the appropriate classification of securities at the time of purchase. Securities to be held for indefinite periods of time, but not necessarily to be held-to-maturity or on a long-term basis, are classified as available-for-sale and carried at fair value, with unrealized gains or losses, net of applicable deferred income taxes, reported as a separate component of shareholders’ equity in accumulated other comprehensive income. Interest income is recognized under the interest method and includes amortization of purchase premiums and accretion of purchase discounts. Premiums and discounts on securities are amortized on the level-yield method, without anticipating prepayments, except for mortgage-backed securities where prepayments are anticipated. Realized gains or losses on the sale of securities are determined using the specific identification method and are recorded on trade date. Securities classified as available-for-sale include securities that management intends to use as part of its asset / liability management strategy and may be sold to provide liquidity in response to changes in interest rates, prepayment risk, or other related factors. Securities classified as held-to-maturity are carried at amortized cost when management has the positive intent to hold the securities to maturity. Management evaluates securities for other than temporary impairment (OTTI) on a quarterly basis, or more frequently when economic or market conditions warrant such an evaluation. Management considers, among other things, (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer, and (iii) the Company’s intent and ability to retain the investment for a period of time sufficient to allow for any anticipated recovery in fair value. Evidence evaluated includes, but is not limited to, the remaining payment terms of the instrument and economic factors that are relevant to the collectability of the instrument, such as: current prepayment speeds, the current financial condition of the issuer(s), industry analyst reports, credit ratings, credit default rates, interest rate trends, the quality of any credit enhancement and the value of any underlying collateral. For each security in an unrealized loss position, the Company assesses whether it intends to sell the security or if it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis less any current-period credit losses. If the Company intends to sell the security or it is more likely than not the Company will be required to sell the security before recovery of its amortized cost basis less any current-period credit loss, the entire difference between the investment’s amortized cost basis and its fair value at the balance sheet date is recognized in earnings. For impaired securities that are not intended for sale and will not be required to be sold prior to recovery of the Company’s amortized cost basis, the Company determines if the impairment has a credit loss component. For both held-to-maturity and available-for-sale securities, if there is no credit loss, no further action is required. For both held-to-maturity and available-for-sale securities, if the amount or timing of cash flows expected to be collected are less than those at the last reporting date, an other-than-temporary impairment shall be considered to have occurred and the credit loss component is recognized in earnings as the present value of the change in expected future cash flows. In determining the present value of the expected cash flows the Company discounts the expected cash flows at the effective interest rate implicit in the security at the date of purchase. The remaining difference between the security’s fair value and the amortized basis is deemed to be due to factors that are not credit related and is recognized in other comprehensive income, net of applicable taxes.
Loans and Allowance for loan losses	Loans Held-for-investment Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at the principal balance outstanding, net of deferred loan fees, unamortized premiums and discounts and an allowance for loan loss. Interest on loans is accrued using the effective interest method based on principal amounts outstanding. Nonrefundable loan fees and certain direct costs associated with the origination of loans are deferred and recognized as an adjustment to interest income over the contractual life of the loans using the level yield method, without anticipating prepayments, or straight lined for loans with revolving features such as construction loans or lines of credit. The accretion of loan fees and costs is discontinued on nonaccrual loans. In addition to originating loans, the Company purchases individual loans and groups of loans. For those purchased loans that management intends to hold for the foreseeable future or until maturity, the purchase premiums and discounts are amortized or accreted using the effective interest method over the remaining contractual life of the loan or straight-lined to their estimated termination for loans with revolving features such as reverse mortgages. Nonaccrual Loans Loans are placed on nonaccrual status when, in the opinion of management, the full and timely collection of principal or interest is in doubt. Generally, the accrual of interest is discontinued when principal or interest payments become more than 90 days past due. In all cases, loans are placed on nonaccrual or charged-off at an earlier date if collection of the principal or interest is considered doubtful. When a loan is placed on nonaccrual status, previously accrued but unpaid interest is reversed against current income. Subsequent collections of unpaid amounts on such a loan are applied to reduce principal when received, except when the ultimate collectability of principal is probable, in which case interest payments are credited to income. Nonaccrual loans may be restored to accrual status if and when principal and interest become current and full repayment is expected. Allowance for Loan Losses The allowance for loan losses is a valuation allowance for probable incurred credit losses. Loans that are deemed to be uncollectible are charged off and deducted from the allowance for loan losses. The provision for loan losses and recoveries on loans previously charged off are credited to the allowance for loan losses. The allowance consists of specific and general components. The specific component relates to loans that are individually classified as impaired when, based on current information and events, it is probable that the Company will be unable to collect all amounts due according to the contractual terms of the loan agreement. Loans for which the terms have been modified resulting in a concession, and for which the borrower is experiencing financial difficulties, are considered troubled debt restructurings (TDRs) and classified as impaired. The general component covers loans that are collectively evaluated for impairment and loans that are not individually identified for impairment evaluation. The general component is based on historical loss experience adjusted for current factors and includes actual loss history experienced for the preceding rolling twelve year period or less, if twelve years of data is not available. This actual loss experience is supplemented with other economic factors based on the risks present for each portfolio segment. These economic factors include consideration of the following: levels and trends in delinquencies and impaired loans (including TDRs); levels and trends in charge-offs and recoveries, trends in volumes and terms of loans; migration of loans to the classification of special mention, substandard, or doubtful; effects of any change in risk selection and underwriting standards; other changes in lending policies and procedures; national and local economic trends and conditions; and effects of changes in credit concentrations. Management estimates the allowance balance required using past loan loss experience, current economic conditions, the nature and volume of the portfolio, information about specific borrower situations, estimated collateral values and other factors. Allocations of the allowance may be made for specific loans, but the entire allowance is available for any loan that, in management’s judgment, should be charged off. Amounts are charged off when available information confirms that specific loans, or portions thereof, are uncollectible. This methodology for determining charge-offs is consistently applied to each group of loans. Management groups loans into different categories based on loan type to determine the appropriate allowance for each loan group. A loan is considered impaired when full payment under the loan terms is not expected. Impairment is evaluated on an individual loan basis for all loans that meet the criteria for specifically evaluated impairment. If a loan is impaired, a portion of the allowance is allocated so that the loan is reported, net of the present value of estimated future cash flows using the loan’s original effective rate or at the fair value of collateral less estimated costs to sell if repayment is expected solely from the collateral. Factors considered in determining impairment include payment status, collateral value and the probability of collecting all amounts when due. Large groups of smaller-balance homogeneous loans such as residential real estate loans are collectively evaluated for impairment and, accordingly, they are not separately identified for impairment disclosures. Loans that experience insignificant payment delays and payment shortfalls are generally not classified as impaired. Management considered the significance of payment delays on a case by case basis, taking into consideration all the circumstances of the loan and borrower, including the length of delay, the reasons for the delay, the borrower’s prior payment record, the amount of the shortfall in relation to principal and interest owed. Loans are reported as TDRs when the Company grants concession(s) to a borrower experiencing financial difficulties that it would not otherwise consider. Examples of such concessions include forgiveness of principal or accrued interest, extending the maturity date, or providing a lower interest rate than would be normally available for a transaction of similar risk. As a result of these concessions, restructured loans are impaired as the Company will not collect all amounts due, both principal and interest, in accordance with the terms of the original loan agreement. TDRs are individually evaluated for impairment and included in separately identified impairment disclosures. TDRs are measured at the present value of estimated cash flows using the loan’s effective rate at inception. If a TDR is considered to be a collateral dependent loan, the loan is reported, net, at the fair value of the collateral. For TDRs that subsequently default, the Company determined the amount of the allowance on the loan in accordance with the accounting policy for the allowance for loan losses on loans individually identified as impaired. The Company incorporates recent historical experience related to TDRs, including the performance of TDRs that subsequently defaulted, into the allowance calculation by loan portfolio segment. Loans Held-for-sale Certain loans originated or acquired and intended for sale in the secondary market are carried at the lower of cost or estimated fair value in the aggregate, as determined by outstanding commitments from investors. Net unrealized losses are recognized through a valuation allowance by charges to income. Gains or losses realized on the sales of loans are recognized at the time of sale and are determined by the difference between the net sales proceeds and the carrying value of the loans sold, adjusted for any servicing asset or liability. Gains and losses on sales of loans are included in noninterest income. Transfers of loans are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control through an agreement to purchase them before their maturity. In the event of a breach of representations and warranties, the Company may be required to repurchase a mortgage loan or indemnify the purchaser, and any subsequent loss on the mortgage loan may be borne by the Company. If there is no breach of a representation and warranty provision, the Company has no obligation to repurchase the loan or indemnify the investor against loss. In cases where the Company repurchases loans, it bears the subsequent credit loss on the loans. Repurchased loans are classified as held-for-sale and are initially recorded at fair value until disposition. The Company seeks to manage the risk of repurchase and associated credit exposure through our underwriting and quality assurance practices and by servicing mortgage loans to meet investor standards.
Federal Home Loan Bank (FHLB) and Federal Reserve Bank (FRB) stock	Federal Ho me Loan Bank (“FHLB”) and Federal Reserve Bank (“FRB”) Stock The Bank is a member of the FHLB of San Francisco and the FRB system. Members are required to own a certain amount of stock based on the level of borrowings and other factors, and may invest in additional amounts. Investments in nonmarketable equity securities, such as FHLB stock and FRB stock, are recorded at cost, classified as a restricted security and periodically evaluated for impairment based on ultimate recovery of par value. Both cash and stock dividends are reported as income.
Other real estate owned	Othe r Real Estate Owned Real estate acquired through or in lieu of loan foreclosure is initially recorded at fair value less estimated costs to sell when acquired, establishing a new cost basis. Physical possession of residential real estate property collateralizing a consumer mortgage loan occurs when legal title is obtained upon completion of foreclosure or when the borrower conveys all interest in the property to satisfy the loan through completion of a deed in lieu of foreclosure or through similar legal agreement. If fair value declines subsequent to acquisition, a valuation allowance is recorded through expense. Operating costs after acquisition are expensed.
Premises and equipment	Premise s and Equipment Premises and equipment are stated at cost less accumulated depreciation and amortization. Amortization of leasehold improvements is computed on a straight-line basis over the terms of the leases or the estimated useful lives of the improvements, whichever is shorter. Depreciation of equipment, furniture, and automobiles is charged to operating expense over the estimated useful lives of the assets on a straight-line basis. The estimated useful lives of equipment, furniture, and automobiles range from three to ten years . Software is stated at cost less accumulated amortization. Amortization of software is computed on a straight-line basis over the estimated useful life of the software, and this period is typically three to five years .
Loan commitments	Loan Com mitments Financial instruments include off-balance sheet credit instruments, such as commitments to make loans and commercial letters of credit, issued to meet customer financing needs. The face amount for these items represents the exposure to loss, before considering customer collateral or ability to repay. Such financial instruments are recorded when they are funded.
Derivative financial instruments	Derivative Financial Instruments At inception of a derivative contract, the Company designates the derivative as one of three types based on the Company’s intention and belief as the likely effectiveness as a hedge. These three types are (1) a hedge of fair value of a recognized asset or liability or of an unrecognized firm commitment (“fair value hedge”), (2) a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow hedge”), or (3) an instrument with no hedging designation (“stand alone derivative”). For a fair value hedge, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item, are recognized in current earnings as fair values change. For a cash flow hedge, the gain or loss on the derivative is reported in other comprehensive income and is reclassified into earnings in the same period during which the hedged transaction affects the earnings. The changes in fair value of derivatives that do not qualify for hedge accounting are reported in current earnings, as noninterest income. Net cash settlements on derivatives that qualify for hedge accounting are recorded in interest income or interest expense, based on the item being hedged. Net cash settlements on derivatives that do not qualify for hedge accounting are reported in noninterest income. Cash flows on hedges are classified in the cash flow statement the same as the cash flows of the item being hedged. The Company formally documents the relationship between the derivative and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions at the inception of the hedging relationship. This documentation includes linking fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting the changes in fair values or cash flows of the hedged items. The initial fair value of hedge components excluded from the assessment of effectiveness is recognized in the statement of financial condition under a systematic and rational method over the life of the hedging instrument and is presented in the same income statement line item as the earnings effect of the hedged item. Any difference between the change in the fair value of the hedge components excluded from the assessment of effectiveness and the amounts recognized in earnings is recorded as a component of other comprehensive income.
Low income housing tax credit investment	Low Inc ome Housing Tax Credit Investment
Deferred Offering Costs	Deferred Offering Costs
Income taxes	Incom e Taxes Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are recognized for the future tax amounts attributable to differences between the financial statement carrying amounts of assets and liabilities and their respective tax bases, computed using enacted tax rates. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. The Company accounts for uncertainty in tax positions taken or expected to be taken on a tax return in accordance with Financial Accounting Standards Board (the “FASB”) Accounting Standards Codification (“ASC”) Topic 740, Accounting for Income Taxes , and provides that the tax effects from an uncertain tax position can be recognized in the financial statements only if, based on its merits, the position is more likely than not to be sustained on audit by the taxing authorities. Management believes that all tax positions taken to date are highly certain and, accordingly, no accounting adjustment has been made to the financial statements. Interest and penalties, if any, related to uncertain tax positions are recorded as part of income tax expense.
Stock-based compensation	Stock-b ased Compensation The Company accounts for stock-based compensation in accordance with FASB ASC Topic 718, Compensation—Stock Compensation , that generally requires entities to recognize the cost of employee services received in exchange for awards of stock options, or other equity instruments, based on the grant date fair value of those awards. Compensation cost is recognized for awards issued to employees based on the fair value of these awards at the date of grant. A Black Scholes model is utilized to estimate the fair value of stock options. This cost is recognized over the period which an employee is required to provide services in exchange for the award, generally the vesting period.
Fair value measurement	Fair Valu e Measurement The Company measures and presents fair values in accordance with FASB ASC Topic 820, Fair Value Measurement , that defines fair value, establishes a framework for measuring fair value, and requires disclosures about fair value measurements. This standard establishes a fair value hierarchy about the assumptions used to measure fair value and clarifies assumptions about risk and the effect of a restriction on the sale or use of an asset. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an 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. This standard’s fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value: 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 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.
Operating Segments	Opera ting Segments While the chief decision-makers monitor the revenue streams of the various products and services, operations are managed and financial performance is evaluated on a Company-wide basis. Operating results are not reviewed by senior management to make resource allocation or performance decisions. Accordingly, all of the financial service operations are considered by management to be aggregated in one reportable operating segment.
Earnings per share	Earnings Pe r Share Basic earnings per share is computed on the basis of the weighted average number of common shares outstanding during the year. Diluted earnings per share is computed on the basis of the weighted average number of common shares outstanding and any dilutive common equivalent shares resulting from stock options or awards.
Comprehensive income	Compr ehensive Income The Company presents comprehensive income in accordance with FASB ASC Topic 220, Comprehensive Income , that requires the disclosure of comprehensive income (loss) and its components. Other comprehensive income (loss) includes unrealized gains and losses on securities available-for-sale and the change in the fair value of cash flow hedges, net of deferred tax effects, which are also recognized as a separate component of equity.
Adopted Accounting Pronouncements and Recently Issued Accounting Pronouncements Not Yet Effective	Adopted Accounting Pronouncements In February 2016, the FASB issued Accounting Standards Update (or “ASU”) 2016-02, Leases (Topic 842). This guidance amended existing guidance that requires lessees recognize the following for all leases at the commencement date (1) A lease liability, which is a lessee’s obligation to make lease payments arising from a lease equal to the present value of lease payments; and (2) A right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term, based upon the amount of the lease liability. Under the new guidance, lessor accounting is largely unchanged. Certain targeted improvements were made to align, where necessary, lessor accounting with the lessee accounting model and Topic 606, Revenue from Contracts with Customers. In July 2018 the FASB issued ASU 2018-10, Codification Improvements to Topic 842, Leases and ASU 2018-11, Leases (Topics 842) Targeted Improvements, that updated narrow aspects of ASU 2016-02, include an additional transition method for adoption that results in initial recognition of a cumulative effect adjustment to retained earnings in the year of adoption and a practical expedient for lessors. These amendments were effective for fiscal years beginning after December 15, 2018. The Company has operating leases for its headquarters and bank branches that fall under Topic 842. The Company elected certain practical expedients upon transition, including retaining the lease classification for any leases that existed prior to adoption of the standard, the transition method with the application date at the beginning of the adoption period, which was January 1, 2019, elected to separate non-lease components and not to recognize short term leases. The impact of the adoption was an increase in assets and liabilities of approximately $5.5 million on its consolidated statement of financial condition. See “Note 5—Premises and Equipment, Net—Operating Leases” for more information. In August 2018, the FASB issued ASU 2018-15, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (a consensus of the FASB Emerging Issues Task Force). This ASU requires that implementation costs incurred by customers in a cloud computing arrangement be deferred and recognized over the non-cancellable term of the cloud computing arrangements plus any optional renewal periods (1) that are reasonably certain to be exercised by the customer or (2) for which exercise of the renewal option is controlled by the cloud service provider, if those costs would have been capitalized in a software licensing arrangement under the internal-use software guidance under ASC 350-40. For public business entities, amendments in this update are effective for fiscal years ending after December 15, 2020. Early adoption is permitted, including adoption in any interim period, for all entities. The amendments in this update should be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. The Company adopted the guidance prospectively as of January 1, 2019. During the year ended December 31, 2019 the Company deferred approximately $2.0 million under the new guidance. Recently Issued Accounting Pronouncements Not Yet Effective In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326) to replace the incurred loss model with an expected loss model, which is referred to as the current expected credit loss (or “CECL”) model. The CECL model is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables, held to maturity debt securities, and reinsurance receivables. It also applies to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor. These amendments were initially effective for fiscal years beginning after December 15, 2019 for SEC registrants and after December 15, 2020, for Public Business Entities, or PBEs. In November 2019, the FASB issued ASU 2019-10, Financial Instruments—Credit Losses (Topic326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates, which finalized the delay of the effective date for smaller reporting companies, such as the Company to apply the standards related to CECL, until fiscal years beginning after December 15, 2022. For debt securities with other than temporary impairment (OTTI), the guidance will be applied prospectively and for existing purchased credit impaired (PCI) assets will be grandfathered and classified as purchased credit deteriorated (PCD) assets at the date of adoption. The asset will be grossed up for the allowance for expected credit losses for all PCD assets at the date of adoption and will continue to recognize the noncredit discount in interest income based on the yield such assets as of the adoption date. Subsequent changes in expected credit losses will be recorded through the allowance. For all other assets with the scope of CECL, the cumulative effect adjustment will be recognized in retained earnings as of the beginning of the first reporting period in which the guidance is effective. In November 2018, the FASB issued ASU 2018-19, Codification Improvements to Topic 326, Financial Instruments—Credit Losses, which clarify that receivables arising from operating leases are not within the scope of Subtopic 326-20. Instead, impairment of receivables arising from operating leases should be accounted for in accordance with Topic 842, Leases. The Company formed a CECL implementation committee in 2018 which prepared a project plan to migrate towards the adoption date. As part of the project plan, the Company contracted a third-party vendor to assist in the application and analysis of ASU 2016-13 as well as a third party vendor to perform an independent model validation. As part of this process, the Company has determined preliminary loan pool segmentation under CECL, as well as evaluated the key economic loss drivers for each segment. The Company operationalized an initial CECL model during the second quarter of 2019, and plans to run the preliminary CECL model alongside the existing incurred loss methodology until the date of adoption. The Company continues to evaluate the effects of ASU 2016-13 on its financial statements and disclosures and whether or not to early adopt the guidance. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement. The updated guidance improves the disclosure requirements on fair value measurements. The updated guidance if effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted for any removed or modified disclosures. The Company will adopt this guidance in the first quarter of 2020 and update its disclosures accordingly. With the exception of the updated standards discussed above, there have been no new accounting pronouncements not yet effective that have significance, or potential significance, to the Company’s consolidated financial statements.

Securities (Tables)

Securities (Tables)	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Unrealized Gain (Loss) on Investments	The fair value of available-for-sale securities and their related gross unrealized gains and losses at the dates indicated are as follows: Available-for-sale securities Amortized Cost Gross Gross Fair Value (Dollars in thousands) December 31, 2019 Residential mortgage-backed securities: Government agency mortgage-backed securities $ 769 $ 32 $ — $ 801 Government agency collateralized mortgage obligation 242,203 552 (837 ) 241,918 Private-label collateralized mortgage obligation 26,346 352 (198 ) 26,500 Commercial mortgage-backed securities: Private-label collateralized mortgage obligation 364,719 12,474 (177 ) 377,016 Asset backed securities: Government sponsored student loan pools 258,022 — (6,491 ) 251,531 $ 892,059 $ 13,410 $ (7,703 ) $ 897,766 Available-for-sale securities Amortized Cost Gross Gross Fair Value (Dollars in thousands) December 31, 2018 Residential mortgage-backed securities: Government agency mortgage-backed securities $ 932 $ 25 $ — $ 957 Government agency collateralized mortgage obligation 50,888 37 (625 ) 50,300 Private-label collateralized mortgage obligation 23,988 64 (107 ) 23,945 Commercial mortgage-backed securities: Government agency collateralized mortgage obligation 23,817 — (1,065 ) 22,752 Asset backed securities: Government sponsored student loan pools 260,050 188 (1,014 ) 259,224 $ 359,675 $ 314 $ (2,811 ) $ 357,178 There were no held-to-maturity securities as of December 31, 2019. The amortized cost, unrealized gains and losses, and fair value of securities held-to-maturity at the date indicated are as follows: Held-to-maturity securities Amortized Cost Gross Gross Fair Value (Dollars in thousands) December 31, 2018 Collateralized mortgage obligation $ 73 $ — $ (1 ) $ 72
Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value	Securities with unrealized losses as of the dates indicated, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are as follows: Available-for-sale securities Less than 12 Months 12 Months or More Total Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized (Dollars in thousands) December 31, 2019 Residential mortgage-backed securities: Government agency collateralized mortgage obligation $ 143,633 $ (785 ) $ 15,794 $ (52 ) $ 159,427 $ (837 ) Private-label collateralized mortgage obligation 59 (1 ) 15,168 (197 ) 15,227 (198 ) Commercial mortgage-backed securities: Private-label collateralized mortgage obligation 13,142 (177 ) — — 13,142 (177 ) Asset backed securities: Government sponsored student loan pools 62,938 (1,317 ) 188,593 (5,174 ) 251,531 (6,491 ) $ 219,772 $ (2,280 ) $ 219,555 $ (5,423 ) $ 439,327 $ (7,703 ) Available-for-sale securities Less than 12 Months 12 Months or More Total Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized (Dollars in thousands) December 31, 2018 Residential mortgage-backed securities: Government agency collateralized mortgage obligation $ 9,952 $ (58 ) $ 29,450 $ (567 ) $ 39,402 $ (625 ) Private-label collateralized mortgage obligation 19,061 (80 ) 1,703 (27 ) 20,764 (107 ) Commercial mortgage-backed securities: Government agency collateralized mortgage obligation — — 22,752 (1,065 ) 22,752 (1,065 ) Asset backed securities: Government sponsored student loan pools 219,169 (1,014 ) — — 219,169 (1,014 ) $ 248,182 $ (1,152 ) $ 53,905 $ (1,659 ) $ 302,087 $ (2,811 )

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	A summary of loans as of the periods presented are as follows: December 31, 2019 2018 (Dollars in thousands) Real estate loans: One-to-four family $ 193,367 $ 190,885 Multi-family 81,233 40,584 Commercial 331,052 309,655 Construction 7,213 3,847 Commercial and industrial 14,440 8,586 Consumer and other 122 150 Reverse mortgage 1,415 1,742 Mortgage warehouse 39,247 41,586 Total gross loans held-for-investment 668,089 597,035 Deferred fees, net 2,724 2,469 Total loans held-for-investment 670,813 599,504 Allowance for loan losses (6,191 ) (6,723 ) Total loans held-for-investment, net $ 664,622 $ 592,781 Total loans held-for-sale (1) $ 375,922 $ 350,636 ________________________ (1) Loans held-for-sale included $365.8 million , and $211.0 million of mortgage warehouse loans at December 31, 2019 and 2018, respectively. At December 31, 2018, loans held-for-sale also included $125.2 million of business loans that were sold in March 2019, discussed in “Note 1—Nature of Business and Summary of Significant Accounting Policies”.
Financing Receivable, Allowance for Credit Loss	The following tables present the allocation of the allowance for loan losses, as well as the activity in the allowance by loan class, and recorded investment in loans held-for-investment as of and for the periods presented: Year Ended December 31, 2019 One-to Multi- Commercial Construction Commercial Consumer Reverse Mortgage Total (Dollars in thousands) Balance, December 31, 2018 $ 1,848 $ 483 $ 3,854 $ 98 $ 156 $ 1 $ 54 $ 229 $ 6,723 Charge-offs (93 ) — — — — — — — (93 ) Recoveries — — — — — — — — — Provision for loan losses 296 170 (1,063 ) (2 ) 156 — (17 ) 21 (439 ) Balance, December 31, 2019 $ 2,051 $ 653 $ 2,791 $ 96 $ 312 $ 1 $ 37 $ 250 $ 6,191 December 31, 2019 One-to Multi- Commercial Construction Commercial Consumer Reverse Mortgage Total (Dollars in thousands) Amount of allowance attributed to: Specifically evaluated impaired loans $ 10 $ — $ — $ — $ — $ — $ 29 $ — $ 39 General portfolio allocation 2,041 653 2,791 96 312 1 8 250 6,152 Total allowance for loan losses $ 2,051 $ 653 $ 2,791 $ 96 $ 312 $ 1 $ 37 $ 250 $ 6,191 Loans evaluated for impairment: Specifically evaluated $ 4,222 $ — $ 7,353 $ — $ 2,714 $ — $ 848 $ — $ 15,137 Collectively evaluated 189,145 81,233 323,699 7,213 11,726 122 567 39,247 652,952 Total gross loans held-for-investment $ 193,367 $ 81,233 $ 331,052 $ 7,213 $ 14,440 $ 122 $ 1,415 $ 39,247 $ 668,089 Year Ended December 31, 2018 One-to Multi- Commercial Construction Commercial Consumer Reverse Mortgage Total (Dollars in thousands) Balance, December 31, 2017 $ 1,991 $ 226 $ 4,711 $ 140 $ 677 $ 18 $ 41 $ 361 $ 8,165 Charge-offs (6 ) — — — — — — — (6 ) Recoveries 10 — — — 80 — 1 — 91 Provision for loan losses (147 ) 257 (857 ) (42 ) (601 ) (17 ) 12 (132 ) (1,527 ) Balance, December 31, 2018 $ 1,848 $ 483 $ 3,854 $ 98 $ 156 $ 1 $ 54 $ 229 $ 6,723 December 31, 2018 One-to Multi- Commercial Construction Commercial Consumer Reverse Mortgage Total (Dollars in thousands) Amount of allowance attributed to: Specifically evaluated impaired loans $ — $ — $ — $ — $ — $ — $ 47 $ — $ 47 General portfolio allocation 1,848 483 3,854 98 156 1 7 229 6,676 Total allowance for loan losses $ 1,848 $ 483 $ 3,854 $ 98 $ 156 $ 1 $ 54 $ 229 $ 6,723 Loans evaluated for impairment: Specifically evaluated $ 3,342 $ — $ 7,946 $ — $ 3,596 $ — $ 1,223 $ — $ 16,107 Collectively evaluated 187,543 40,584 301,709 3,847 4,990 150 519 41,586 580,928 Total gross loans held-for-investment $ 190,885 $ 40,584 $ 309,655 $ 3,847 $ 8,586 $ 150 $ 1,742 $ 41,586 $ 597,035
Impaired Financing Receivables	The following tables provide a summary of the Company’s investment in impaired loans as of and for the periods presented: December 31, 2019 Unpaid Recorded Related Average Interest (Dollars in thousands) With no related allowance recorded: Real estate loans: One-to-four family $ 4,792 $ 4,156 $ — $ 4,071 $ 234 Commercial 7,632 7,353 — 7,685 365 Commercial and industrial 2,929 2,714 — 2,595 261 Reverse mortgage 510 511 — 728 — 15,863 14,734 — 15,079 860 With an allowance recorded: Real estate loans: One-to-four family 66 66 10 24 6 Reverse mortgage 337 337 29 355 — 403 403 39 379 6 Total impaired loans $ 16,266 $ 15,137 $ 39 $ 15,458 $ 866 December 31, 2018 Unpaid Recorded Related Average Interest (Dollars in thousands) With no related allowance recorded: Real estate loans: One-to-four family $ 3,739 $ 3,318 $ — $ 3,575 $ 80 Commercial 8,266 7,946 — 9,303 439 Commercial and industrial 3,754 3,596 — 2,845 276 Reverse mortgage 846 797 — 1,110 — 16,605 15,657 — 16,833 795 With an allowance recorded: Real estate loans: One-to-four family 24 24 — 26 2 Commercial — — — 1,134 — Reverse mortgage 454 426 47 363 — 478 450 47 1,523 2 Total impaired loans $ 17,083 $ 16,107 $ 47 $ 18,356 $ 797
Financing Receivable, Past Due	The following tables present by loan class the aging analysis based on contractual terms, nonaccrual loans, and the Company’s recorded investment in loans held-for-investment as of the periods presented: December 31, 2019 30-59 60-89 Greater Total Current Total Nonaccruing Loans (Dollars in thousands) Real estate loans: One-to-four family $ 3,573 $ 96 $ 3,302 $ 6,971 $ 186,396 $ 193,367 $ 3,963 $ — Multi-family — — — — 81,233 81,233 — — Commercial — — — — 331,052 331,052 — — Construction — — — — 7,213 7,213 — — Commercial and industrial — — — — 14,440 14,440 1,098 — Consumer and other — — — — 122 122 — — Reverse mortgage — — — — 1,415 1,415 848 — Mortgage warehouse — — — — 39,247 39,247 — — Total gross loans held-for-investment $ 3,573 $ 96 $ 3,302 $ 6,971 $ 661,118 $ 668,089 $ 5,909 $ — December 31, 2018 30-59 60-89 Greater Total Current Total Nonaccruing Loans (Dollars in thousands) Real estate loans: One-to-four family $ — $ 49 $ 2,991 $ 3,040 $ 187,845 $ 190,885 $ 3,062 $ — Multi-family — — — — 40,584 40,584 — — Commercial — — — — 309,655 309,655 422 — Construction — — — — 3,847 3,847 — — Commercial and industrial — — — — 8,586 8,586 3,596 — Consumer and other — — — — 150 150 — — Reverse mortgage — — — — 1,742 1,742 1,223 — Mortgage warehouse — — — — 41,586 41,586 — — Total gross loans held-for-investment $ — $ 49 $ 2,991 $ 3,040 $ 593,995 $ 597,035 $ 8,303 $ —
Financing Receivable, Troubled Debt Restructuring	Modifications of loans classified as TDRs during the periods presented, are as follows: Year Ended December 31, 2019 Number of Pre- Post- (Dollars in thousands) Troubled debt restructurings: Real estate loans: One-to-four family 2 $ 1,018 $ 1,114 Commercial and industrial 1 494 494 3 1,512 1,608
Financing Receivable Credit Quality Indicators Description	The Company uses the following definitions for risk ratings: Pass : Loans in all classes that are not adversely rated, are contractually current as to principal and interest, and are otherwise in compliance with the contractual terms of the loan agreement. Management believes that there is a low likelihood of loss related to those loans that are considered pass. 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 institution’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 Company 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. Loss : Credits rated as loss are charged-off. Management has no expectation of the recovery of any payments in respect of credits rated as loss.
Financing Receivable Credit Quality Indicators	The following tables present by portfolio class the Company’s internal risk grading system as well as certain other information concerning the credit quality of the Company’s recorded investment in loans held-for-investment as of the periods presented. No assets were classified as loss or doubtful during the periods presented. Credit Risk Grades Pass Special Mention Substandard Doubtful Total (Dollars in thousands) December 31, 2019 Real estate loans: One-to-four family $ 189,405 $ — $ 3,962 $ — $ 193,367 Multi-family 81,233 — — — 81,233 Commercial 322,671 8,381 — — 331,052 Construction 7,213 — — — 7,213 Commercial and industrial 11,726 — 2,714 — 14,440 Consumer and other 122 — — — 122 Reverse mortgage 435 132 848 — 1,415 Mortgage warehouse 39,247 — — — 39,247 Total gross loans held-for-investment $ 652,052 $ 8,513 $ 7,524 $ — $ 668,089 Credit Risk Grades Pass Special Mention Substandard Doubtful Total (Dollars in thousands) December 31, 2018 Real estate loans: One-to-four family $ 187,823 $ — $ 3,062 $ — $ 190,885 Multi-family 40,584 — — — 40,584 Commercial 309,233 — 422 — 309,655 Construction 3,847 — — — 3,847 Commercial and industrial 4,630 360 3,596 — 8,586 Consumer and other 150 — — — 150 Reverse mortgage 214 305 1,223 — 1,742 Mortgage warehouse 41,586 — — — 41,586 Total gross loans held-for-investment $ 588,067 $ 665 $ 8,303 $ — $ 597,035
Financing Receivable, Loans Purchased And Sold	The following table presents loans held-for-investment purchased and/or sold during the year by portfolio segment: December 31, 2019 2018 Purchases Sales Purchases Sales (Dollars in thousands) Real estate loans: One-to-four family $ 103,658 $ — $ 91,395 $ 17,177 Multi-family 19,280 — 17,809 — Commercial — — 12,500 1,118 $ 122,938 $ — $ 121,704 $ 18,295

Other Real Estate Owned, Net (T

Other Real Estate Owned, Net (Tables)	12 Months Ended
	Dec. 31, 2019
Other Real Estate [Abstract]
Other Real Estate Owned Activity	The following table provides a summary of the Company’s other real estate owned activity and balances for the periods presented: Year Ended December 31, 2019 2018 (Dollars in thousands) Balance, beginning of period $ 31 $ 2,308 Loans transferred to other real estate owned 403 65 Net change in valuation allowance (229 ) (34 ) Proceeds from sale of other real estate owned (125 ) (2,390 ) Gain on sale of REO 48 82 Balance, end of period $ 128 $ 31

Premises and Equipment, Net (Ta

Premises and Equipment, Net (Tables)	12 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Year-end premises and equipment were as follows: December 31, 2019 2018 (Dollars in thousands) Equipment, furniture, and software $ 5,459 $ 4,613 Leasehold improvements 1,372 1,795 Automobiles 202 202 7,033 6,610 Accumulated depreciation and amortization (3,774 ) (2,954 ) Total premises and equipment, net $ 3,259 $ 3,656
Lessee, Operating Lease, Disclosure	The weighted-average remaining lease term and discount rate were as follows: December 31, Weighted-average remaining lease term 3.0 years Weighted-average discount rate 4.21 %
Schedule of Lease Expense and Supplemental Cash Flow	Rent expense was $1.4 million for the year ended December 31, 2018 . The components of lease expense for the year ended December 31, 2019 were as follows: Year Ended (Dollars in thousands) Operating lease cost $ 1,579 Variable lease cost 47 Short-term lease cost (1) 185 Sublease income (70 ) Total lease cost $ 1,741 ________________________ (1) Short-term lease cost are for leases with a term of one year or less including terms of one month or less per accounting policy election.
Schedule of Maturities of Lease Liabilities	Maturities of lease liabilities were as follows: December 31, Operating leases (Dollars in thousands) 2020 $ 1,676 2021 1,748 2022 1,548 2023 215 2024 26 Total lease payments 5,213 Less: imputed lease interest (332 ) Total lease liabilities $ 4,881

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Dec. 31, 2019
Deposits [Abstract]
Deposit Liabilities, Type	The following table presents the composition of our deposits as of the dates presented: December 31, 2019 2018 (Dollars in thousands) Noninterest bearing demand accounts $ 1,343,667 $ 1,525,922 Interest bearing accounts: Interest bearing demand accounts 60,794 45,889 Money market and savings accounts 85,705 77,286 Certificates of deposit 324,488 29,736 Interest bearing accounts 470,987 152,911 Deposits held-for-sale: Noninterest bearing demand accounts — 55,891 Interest bearing accounts — 48,281 Deposits held-for-sale — 104,172 Total deposits $ 1,814,654 $ 1,783,005
Time Deposit Maturities	Certificates of deposit at December 31, 2019 , are scheduled to mature as follows: Amount Year Ended December 31, (Dollars in thousands) 2020 $ 1,199 2021 422 2022 461 2023 97,346 2024 177,451 Thereafter 47,609 Total $ 324,488

FHLB Advances and Other Borro_2

FHLB Advances and Other Borrowings (Tables)	12 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Schedule of FHLB Advances	The following table sets forth certain information on our FHLB advances during the periods presented: Year Ended December 31, 2019 2018 (Dollars in thousands) Amount outstanding at period-end $ 49,000 — Weighted average interest rate at period-end 1.66 % — Maximum month-end balance during the period $ 218,000 $ 15,000 Average balance outstanding during the period $ 28,205 $ 1,274 Weighted average interest rate during the period 1.94 % 1.49 %

Derivative and Hedging Activi_2

Derivative and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The table below presents the fair value of the Company’s derivative financial instruments as well as the classification within the consolidated balance sheets. December 31, 2019 2018 Balance Sheet Fair Value Balance Sheet Fair Value (Dollars in thousands) Derivatives designated as hedging instruments: Cash flow hedge interest rate floor Derivative assets $ 23,054 Derivative assets $ — Cash flow hedge interest rate cap Derivative assets 386 Derivative assets 999
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	The following table summarizes the effects of derivatives in cash flow hedging relationships designated as hedging instruments on the Company’s consolidated statements of operations for the periods presented: Amount of Gain (Loss) Recognized in OCI Location of Gain (Loss) Reclassified from Accumulated OCI into Income Amount of Gain (Loss) Reclassified from Accumulated OCI into Income Year Ended Year Ended 2019 2018 2019 2018 (Dollars in thousands) Derivatives designated as hedging instruments: Cash flow hedge interest rate floor $ 2,006 $ — Interest income - Other interest earning assets $ (355 ) $ — Cash flow hedge interest rate floor 882 — Interest income - Securities (635 ) — Cash flow hedge interest rate cap (392 ) 167 Interest expense - Subordinated debentures (167 ) (134 ) Cash flow hedge interest rate swap — 24 Interest expense - FHLB advances — 54

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	Income tax expense consists of the following for the periods presented: Year Ended December 31, 2019 2018 (Dollars in thousands) Current provision Federal $ 6,163 $ 5,298 State 3,304 2,922 9,467 8,220 Federal deferred tax (benefit) expense 241 (117 ) State deferred tax (benefit) expense 118 (37 ) 359 (154 ) Income tax expense $ 9,826 $ 8,066
Schedule of Effective Income Tax Rate Reconciliation	Comparison of the federal statutory income tax rates to the Company’s effective income tax rates for the periods presented are as follows: Year Ended December 31, 2019 2018 Amount Rate Amount Rate (Dollars in thousands) Statutory federal tax $ 7,281 21.0 % $ 6,384 21.0 % State tax, net of federal benefit 2,697 7.8 % 2,304 7.6 % Tax credits (170 ) (0.5 )% (170 ) (0.6 )% Excess tax benefit from stock-based compensation (88 ) (0.3 )% (469 ) (1.6 )% Other items, net 106 0.3 % 17 0.1 % Actual tax expense $ 9,826 28.3 % $ 8,066 26.5 %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and liabilities included in other assets are as follows: December 31, 2019 2018 (Dollars in thousands) Deferred tax assets Allowance for loan losses $ 1,772 $ 1,921 Derivatives and securities available-for-sale — 825 Accrued vacation pay 368 333 Accrued bonus 394 333 Nonaccrual loan interest 149 98 State taxes 633 552 Operating lease liabilities 1,397 232 Other 356 269 Deferred tax assets 5,069 4,563 Deferred tax liabilities Basis difference in fixed assets (706 ) (367 ) Derivatives and securities available-for-sale (2,570 ) — Operating lease right-of-use assets (1,308 ) — FHLB stock dividends (101 ) (100 ) Deferred loan fees (501 ) (645 ) Other (307 ) (122 ) Deferred tax liabilities (5,493 ) (1,234 ) Deferred tax (liability) asset, net $ (424 ) $ 3,329

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Off-Balance Sheet Items	The Company’s commitments associated with outstanding letters of credit and commitments to extend credit expiring by period as of the date indicated are summarized below. Since commitments associated with letters of credit and commitments to extend credit may expire unused, the amounts shown do not necessarily reflect the actual future cash funding requirements. December 31, 2019 2018 (Dollars in thousands) Unfunded lines of credit $ 47,433 $ 71,398 Letters of credit 655 10 Total credit extension commitments $ 48,088 $ 71,408

Stock-based Compensation (Table

Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2019
Share-based Payment Arrangement [Abstract]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The fair value of the option grants in 2019 and 2018 and were estimated on the date of the grant using the Black-Scholes option pricing model with the assumptions presented below: Year Ended December 31, 2019 2018 Weighted-average assumptions used: Risk-free interest rate 1.67 % 2.82 % Expected term 6.25 years 6.5 years Expected stock price volatility 30.88 % 10.72 % Dividend yield 0.00 % 0.00 % Weighted-average grant date fair value $ 5.43 $ 2.44
Schedule of Stock Compensation Plans	A summary of stock option activity as of December 31, 2019 and changes during the year then ended is presented below: Number of Weighted Weighted (in years) Aggregate (in thousands) Outstanding at January 1, 2019 816,616 $ 5.54 Granted 176,198 16.09 Exercised (73,457 ) 5.78 Forfeited/Expired (1,500 ) 12.00 Outstanding at December 31, 2019 917,857 $ 7.54 4.3 years $ 7,717 Exercisable at December 31, 2019 681,909 $ 4.97 2.5 years $ 7,460 Vested or Expected to Vest at December 31, 2019 886,054 $ 7.25 4.1 years $ 7,703
Share-based Payment Arrangement, Restricted Stock Unit, Activity	A summary of the status of the Company’s nonvested restricted stock unit awards as of December 31, 2019 , and changes during the year then ended, is presented below: Number of Shares Weighted-Average Nonvested at January 1, 2019 — $ — Granted 82,658 16.09 Canceled or Forfeited (31 ) 16.09 Nonvested at December 31, 2019 82,627 $ 16.09

Regulatory Capital (Tables)

Regulatory Capital (Tables)	12 Months Ended
	Dec. 31, 2019
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	Actual capital amounts and ratios for the Company and the Bank as of December 31, 2019 and 2018 , are presented in the following tables: Actual Minimum capital To be well Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) December 31, 2019 The Company Tier 1 leverage ratio $ 240,135 11.23 % $ 85,501 4.00 % N/A N/A Common equity tier 1 capital ratio 224,635 24.52 % 41,233 4.50 % N/A N/A Tier 1 risk-based capital ratio 240,135 26.21 % 54,978 6.00 % N/A N/A Total risk-based capital ratio 246,447 26.90 % 73,304 8.00 % N/A N/A The Bank Tier 1 leverage ratio 224,605 10.52 % 85,399 4.00 % 106,749 5.00 % Common equity tier 1 capital ratio 224,605 24.55 % 41,163 4.50 % 59,458 6.50 % Tier 1 risk-based capital ratio 224,605 24.55 % 54,884 6.00 % 73,179 8.00 % Total risk-based capital ratio 230,917 25.24 % 73,179 8.00 % 91,474 10.00 % December 31, 2018 The Company Tier 1 leverage ratio $ 208,807 9.00 % $ 92,812 4.00 % N/A N/A Common equity tier 1 capital ratio 193,307 23.10 % 37,650 4.50 % N/A N/A Tier 1 risk-based capital ratio 208,807 24.96 % 50,200 6.00 % N/A N/A Total risk-based capital ratio 215,638 25.77 % 66,933 8.00 % N/A N/A The Bank Tier 1 leverage ratio 197,175 8.51 % 92,637 4.00 % 115,796 5.00 % Common equity tier 1 capital ratio 197,175 23.68 % 37,472 4.50 % 54,127 6.50 % Tier 1 risk-based capital ratio 197,175 23.68 % 49,963 6.00 % 66,618 8.00 % Total risk-based capital ratio 204,006 24.50 % 66,618 8.00 % 83,272 10.00 %

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis	As of December 31, 2019 and 2018 , assets and liabilities measured at fair value on a recurring basis are as follows: Fair Value Measurements Using Quoted Prices Significant Other Significant Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2019 Assets Securities available-for-sale $ — $ 897,766 $ — $ 897,766 Derivative assets — 23,440 — 23,440 $ — $ 921,206 $ — $ 921,206 Fair Value Measurements Using Quoted Prices Significant Other Significant Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2018 Assets Securities available-for-sale $ — $ 357,178 $ — $ 357,178 Derivative assets — 999 — 999 $ — $ 358,177 $ — $ 358,177
Schedule of Assets Measured at Fair Value on Non-Recurring Basis	As of December 31, 2019 and 2018 , assets measured at fair value on a non-recurring basis are summarized as follows: Fair Value Measurements Using Quoted Prices Significant Other Significant Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2019 Assets Impaired loans: Real estate: One-to-four family $ — $ — $ 56 $ 56 Reverse mortgage — — 308 308 Other real estate owned — — 128 128 $ — $ — $ 492 $ 492 Fair Value Measurements Using Quoted Prices Significant Other Significant Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2018 Assets Impaired loans: Real estate: One-to-four family $ — $ — $ 24 $ 24 Reverse mortgage — — 379 379 Other real estate owned — — 31 31 $ — $ — $ 434 $ 434
Schedule of Fair Value by Balance Sheet Grouping	The following tables present information about the Company’s assets and liabilities that are not measured at fair value in the consolidated statements of financial condition as of the dates presented: Carrying Fair Value Measurements Using Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2019 Financial assets: Cash and due from banks $ 1,579 $ 1,579 $ — $ — $ 1,579 Interest earning deposits 132,025 132,025 — — 132,025 Loans held-for-investment, net 664,622 — — 666,272 666,272 Loans held-for-sale 375,922 — 376,126 — 376,126 Accrued interest receivable 5,950 86 3,643 2,221 5,950 Financial liabilities: Deposits $ 1,814,654 $ — $ 1,826,100 $ — $ 1,826,100 FHLB advances 49,000 — 49,000 — 49,000 Notes payable 3,714 — 3,714 — 3,714 Subordinated debentures 15,816 — 15,203 — 15,203 Accrued interest payable 559 — 559 — 559 Carrying Fair Value Measurements Using Level 1 Level 2 Level 3 Total (Dollars in thousands) December 31, 2018 Financial assets: Cash and due from banks $ 4,177 $ 4,177 $ — $ — $ 4,177 Interest earning deposits 670,243 670,243 — — 670,243 Securities held-to-maturity 73 — 72 — 72 Loans held-for-investment, net 592,781 — — 591,315 591,315 Loans held-for-sale 350,636 — 351,115 — 351,115 Accrued interest receivable 5,770 571 1,430 3,769 5,770 Financial liabilities: Deposits $ 1,678,833 $ — $ 1,621,138 $ — $ 1,621,138 Deposits held-for-sale 104,172 — 95,215 — 95,215 Notes payable 4,857 — 4,857 — 4,857 Subordinated debentures 15,802 — 15,414 — 15,414 Accrued interest payable 451 — 451 — 451

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The computation of basic and diluted earnings per share is shown below. Year Ended 2019 2018 (Dollars in thousands, except per share data) Basic Net income $ 24,846 $ 22,333 Weighted average common shares outstanding 17,957 16,543 Basic earnings per common share $ 1.38 $ 1.35 Diluted Net income $ 24,846 $ 22,333 Weighted average common shares outstanding for basic earnings per common share 17,957 16,543 Add: Dilutive effects of stock-based awards 428 480 Average shares and dilutive potential common shares 18,385 17,023 Dilutive earnings per common share $ 1.35 $ 1.31

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2019
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table shows for the years ended December 31, 2019 and 2018 , changes in the balances of each component of accumulated other comprehensive income, net of tax: Unrealized Gains/ Derivative Accumulated (Dollars in thousands) Beginning balance, January 1, 2018 $ (756 ) $ (461 ) $ (1,217 ) Current period other comprehensive (loss) income (1,029 ) 185 (844 ) Ending balance, December 31, 2018 (1,785 ) (276 ) (2,061 ) Current period other comprehensive income before reclassification 6,373 2,606 8,979 Amounts reclassified from accumulated other comprehensive income (517 ) — (517 ) Ending balance, December 31, 2019 $ 4,071 $ 2,330 $ 6,401

Parent Company Financial Info_2

Parent Company Financial Information (Tables)	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information Disclosure [Abstract]
Condensed Financial Statements	Condensed financial information for the Corporation (parent company only) is as follows: Statements of Financial Condition December 31, 2019 2018 (Dollars in thousands) ASSETS Cash and due from banks $ 19,086 $ 15,355 Investments in subsidiaries 231,927 195,872 Other assets 816 2,904 Total assets $ 251,829 $ 214,131 LIABILITIES AND SHAREHOLDERS’ EQUITY Notes payable $ 3,714 $ 4,857 Subordinated debentures, net 15,816 15,802 Accrued expenses and other liabilities 1,263 2,226 Total liabilities 20,793 22,885 Commitments and contingencies Preferred stock — — Common stock 187 178 Additional paid-in capital 132,138 125,665 Retained earnings 92,310 67,464 Accumulated other comprehensive loss 6,401 (2,061 ) Total shareholders’ equity 231,036 191,246 Total liabilities and shareholders’ equity $ 251,829 $ 214,131 Statements of Operations Year Ended 2019 2018 (Dollars in thousands) Total interest income $ 29 $ 27 Interest expense Notes payable and other 224 405 Subordinated debentures 1,072 915 Total interest expense 1,296 1,320 Dividends from subsidiaries — 525 Noninterest expense Salaries and employee benefits 957 652 Occupancy and equipment 92 61 Communications and data processing 173 89 Professional services 687 848 Other general and administrative 127 65 Total noninterest expense 2,036 1,715 Loss before income taxes and equity in undistributed earnings of subsidiaries (3,303 ) (2,483 ) Income tax benefit (895 ) (793 ) Equity in undistributed earnings of subsidiaries 27,254 24,023 Net income $ 24,846 $ 22,333 Statements of Cash Flows Year Ended 2019 2018 (Dollars in thousands) Cash flows from operating activities Net income $ 24,846 $ 22,333 Adjustments to reconcile net income to net cash used in operating activities: Equity in undistributed earnings of subsidiaries (27,254 ) (24,023 ) Other, net 403 370 Changes in operating assets and liabilities: Other assets 1,538 (1,736 ) Accrued expenses and other liabilities (944 ) 918 Net cash used in operating activities (1,411 ) (2,138 ) Cash flows from investing activities Investments in subsidiaries — (80,000 ) Net cash used in investing activities — (80,000 ) Cash flows from financing activities Payments made on notes payable (1,143 ) (1,143 ) Proceeds from issuance of common stock, net 6,454 107,884 Repurchase of common stock — (11,371 ) Other, net (169 ) (608 ) Net cash provided by financing activities 5,142 94,762 Net increase in cash and cash equivalents 3,731 12,624 Cash and cash equivalents, beginning of year 15,355 2,731 Cash and cash equivalents, end of year $ 19,086 $ 15,355

Quarterly Financial Data (Una_2

Quarterly Financial Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information	The following is a summary of selected financial data presented below by quarter for the periods indicated: Three Months Ended March 31, June 30, September 30, December 31, (Dollars in thousands, except per share data) 2019: Interest income $ 20,063 $ 19,472 $ 21,388 $ 20,112 Interest expense 747 1,904 2,945 4,482 Net interest income 19,316 17,568 18,443 15,630 Provision for (reversal of) loan losses 267 152 (858 ) — Net interest income after provision 19,049 17,416 19,301 15,630 Noninterest income 7,871 2,154 2,599 3,130 Noninterest expense 13,486 12,721 12,611 13,660 Net income before income taxes 13,434 6,849 9,289 5,100 Income tax expense 3,998 1,693 2,633 1,502 Net income $ 9,436 $ 5,156 $ 6,656 $ 3,598 Basic earnings per share $ 0.53 $ 0.29 $ 0.37 $ 0.20 Diluted earnings per share $ 0.52 $ 0.28 $ 0.36 $ 0.19 Three Months Ended March 31, June 30, September 30, December 31, (Dollars in thousands, except per share data) 2018: Interest income $ 15,611 $ 16,833 $ 18,707 $ 21,601 Interest expense 870 784 737 738 Net interest income 14,741 16,049 17,970 20,863 Provision for (reversal of) loan losses 143 5 — (1,675 ) Net interest income after provision 14,598 16,044 17,970 22,538 Noninterest income 1,387 2,001 2,184 1,991 Noninterest expense 11,086 11,843 11,417 13,968 Net income before income taxes 4,899 6,202 8,737 10,561 Income tax expense 1,356 1,711 2,458 2,541 Net income $ 3,543 $ 4,491 $ 6,279 $ 8,020 Basic earnings per share $ 0.28 $ 0.25 $ 0.35 $ 0.45 Diluted earnings per share $ 0.27 $ 0.25 $ 0.34 $ 0.44

Nature of Business and Summar_3

Nature of Business and Summary of Significant Accounting Policies - Sale of Retail Branch (Details) - Disposal Group, Disposed of by Sale, Not Discontinued Operations - Retail Branch in San Marcos, California $ in Millions	1 Months Ended
	Mar. 31, 2019USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Reduction in loans	$ 115.4
Reduction in deposits	74.5
Pre-tax gain on sale	$ 5.5

Nature of Business and Summar_4

Nature of Business and Summary of Significant Accounting Policies - Premises and equipment (Details)	12 Months Ended
	Dec. 31, 2019
Equipment, Furniture and Automobiles | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Equipment, Furniture and Automobiles | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Software | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Software | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years

Nature of Business and Summar_5

Nature of Business and Summary of Significant Accounting Policies - Low income housing tax credit and Deferred Offering Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Low income housing tax credit investment	$ 954	$ 1,044
Deferred offering costs		$ 1,500

Nature of Business and Summar_6

Nature of Business and Summary of Significant Accounting Policies - Operating Segments (Details)	12 Months Ended
	Dec. 31, 2019segment
Accounting Policies [Abstract]
Number of operating segments	1
Number of reportable segments	1

Nature of Business and Summar_7

Nature of Business and Summary of Significant Accounting Policies - Adopted Accounting Pronouncements (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets	$ 2,128,127		$ 2,004,318
Liabilities	1,897,091		$ 1,813,072
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Assets		$ 5,500
Liabilities		$ 5,500
Accounting Standards Update 2018-15
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in deferred implementation costs	$ 2,000

Securities - Reconciliation fro

Securities - Reconciliation from Amortized Cost to Estimated Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Held-to-maturity securities
Amortized Cost	$ 0	$ 73
Fair Value	0	72
Available-for-sale securities
Amortized Cost	892,059	359,675
Gross Unrealized Gains	13,410	314
Gross Unrealized Losses	(7,703)	(2,811)
Fair Value	897,766	357,178
Government agency mortgage-backed securities
Available-for-sale securities
Amortized Cost	769	932
Gross Unrealized Gains	32	25
Gross Unrealized Losses	0	0
Fair Value	801	957
Government agency collateralized mortgage obligation, Residential
Available-for-sale securities
Amortized Cost	242,203	50,888
Gross Unrealized Gains	552	37
Gross Unrealized Losses	(837)	(625)
Fair Value	241,918	50,300
Government agency collateralized mortgage obligation, Commercial
Available-for-sale securities
Amortized Cost		23,817
Gross Unrealized Gains		0
Gross Unrealized Losses		(1,065)
Fair Value		22,752
Private-label collateralized mortgage obligation, Residential
Available-for-sale securities
Amortized Cost	26,346	23,988
Gross Unrealized Gains	352	64
Gross Unrealized Losses	(198)	(107)
Fair Value	26,500	23,945
Private-label collateralized mortgage obligation, Commercial
Available-for-sale securities
Amortized Cost	364,719
Gross Unrealized Gains	12,474
Gross Unrealized Losses	(177)
Fair Value	377,016
Government sponsored student loan pools
Available-for-sale securities
Amortized Cost	258,022	260,050
Gross Unrealized Gains	0	188
Gross Unrealized Losses	(6,491)	(1,014)
Fair Value	251,531	259,224
Collateralized mortgage obligation
Held-to-maturity securities
Amortized Cost	$ 0	73
Gross Unrecognized Gains		0
Gross Unrecognized Losses		(1)
Fair Value		$ 72

Securities - Securities in Unre

Securities - Securities in Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Fair Value	$ 219,772	$ 248,182
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Unrealized Losses	(2,280)	(1,152)
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Fair Value	219,555	53,905
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Unrealized Losses	(5,423)	(1,659)
Available-for-sale securities, continuous unrealized loss position, Fair Value	439,327	302,087
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses	(7,703)	(2,811)
Government agency collateralized mortgage obligation
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Fair Value	143,633
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Unrealized Losses	(785)
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Fair Value	15,794
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Unrealized Losses	(52)
Available-for-sale securities, continuous unrealized loss position, Fair Value	159,427
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses	(837)
Government agency collateralized mortgage obligation, Residential
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Fair Value		9,952
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Unrealized Losses		(58)
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Fair Value		29,450
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Unrealized Losses		(567)
Available-for-sale securities, continuous unrealized loss position, Fair Value		39,402
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses		(625)
Government agency collateralized mortgage obligation, Commercial
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Fair Value		0
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Unrealized Losses		0
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Fair Value		22,752
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Unrealized Losses		(1,065)
Available-for-sale securities, continuous unrealized loss position, Fair Value		22,752
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses		(1,065)
Private-label collateralized mortgage obligation
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Fair Value	59	19,061
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Unrealized Losses	(1)	(80)
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Fair Value	15,168	1,703
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Unrealized Losses	(197)	(27)
Available-for-sale securities, continuous unrealized loss position, Fair Value	15,227	20,764
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses	(198)	(107)
Private-label collateralized mortgage obligation, Commercial
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Fair Value	13,142
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Unrealized Losses	(177)
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Fair Value	0
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Unrealized Losses	0
Available-for-sale securities, continuous unrealized loss position, Fair Value	13,142
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses	(177)
Government sponsored student loan pools
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Fair Value	62,938	219,169
Available-for-sale securities, continuous unrealized loss position, Less than 12 Months, Unrealized Losses	(1,317)	(1,014)
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Fair Value	188,593	0
Available-for-sale securities, continuous unrealized loss position, 12 Months or Longer, Unrealized Losses	(5,174)	0
Available-for-sale securities, continuous unrealized loss position, Fair Value	251,531	219,169
Available-for-sale securities, continuous unrealized loss position, Unrealized Losses	$ (6,491)	$ (1,014)

Securities - Narrative (Details

Securities - Narrative (Details)	12 Months Ended
	Dec. 31, 2019USD ($)issuersecurity	Dec. 31, 2018USD ($)security
Schedule of Held-to-maturity Securities [Line Items]
Securities held-to-maturity, Carrying Amount	$ 0	$ 73,000
Securities held-to-maturity, Fair Value	0	72,000
Investment securities pledged for borrowings	$ 0	0
Securities issued in an amount greater than 10% of shareholders' equity, number of issuers | issuer	6,000,000
Securities issued in an amount greater than 10% of shareholders' equity, fair value	$ 346,000,000
Securities, continuous unrealized loss position, unrealized Losses	$ (7,703,000)	$ (2,811,000)
Number of securities whose estimated fair value declined | security	33	32
Decline in fair value from amortized cost, percent	1.72%	0.92%
Proceeds from sale of securities available-for-sale	$ 42,005,000	$ 0
Gain on sales of available for sale securities	900,000
Loss on sales of available-for-sale securities	(200,000)	0
Tax expense related to net realized gains and losses	200,000
Credit losses recognized in earnings	0	0
Private-label collateralized mortgage obligation
Schedule of Held-to-maturity Securities [Line Items]
Securities held-to-maturity, Fair Value	$ 0	$ 0

Loans - Narrative (Details)

Loans - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)contract	Dec. 31, 2018USD ($)contract
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	$ 670,813	$ 599,504
Total loans held-for-sale	375,922	350,636
Accrued interest	2,200	2,100
Deferred fees, net	2,724	2,469
Investment in TDRs	$ 1,800	$ 500
Loans modified as TDRs | contract	3	0
Loans modified as TDRs, subsequent default | contract	0	0
Related party loans	$ 4,600	$ 5,000
Decrease in balance of related party loans due to principal payments received	78	300
New loans advances		4,700
Loans reclassified as related parties		300
Increase (decrease) in balance of related party loans due to change in composition of related parties	(300)
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	$ 614,300	$ 546,700
Real Estate | CALIFORNIA | Financing Receivable | Credit Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	64.80%	69.70%
Real Estate | ARIZONA | Financing Receivable | Credit Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	10.20%	7.30%
Mortgage warehouse | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	$ 405,000	$ 252,600
Proceeds from sale of mortgage loans held-for-sale	151,300	165,100
Total loans held-for-sale	$ 365,800	$ 211,000

Loans - Summary of Loans (Detai

Loans - Summary of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	$ 668,089	$ 597,035
Deferred fees, net	2,724	2,469
Total loans held-for-investment	670,813	599,504
Allowance for loan losses	(6,191)	(6,723)
Total loans held-for-investment, net	664,622	592,781
Total loans held-for-sale	375,922	350,636
Residential | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	39,247	41,586
Total loans held-for-investment	405,000	252,600
Total loans held-for-sale	365,800	211,000
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	122	150
Reverse mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	1,415	1,742
Business Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held-for-sale		125,200
Real estate loans | Residential | One-to-four family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	193,367	190,885
Real estate loans | Residential | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	81,233	40,584
Real estate loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	331,052	309,655
Real estate loans | Commercial | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	7,213	3,847
Commercial and industrial | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans held-for-investment	$ 14,440	$ 8,586

Loans - Allowance (Details)

Loans - Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 6,723	$ 8,165
Charge-offs	(93)	(6)
Recoveries	0	91
Provision for loan losses	(439)	(1,527)
Ending balance	6,191	6,723
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Specifically evaluated impaired loans			$ 39	$ 47
General portfolio allocation			6,152	6,676
Total allowance for loan losses	6,191	8,165	6,191	6,723
Specifically evaluated			15,137	16,107
Collectively evaluated			652,952	580,928
Total gross loans held-for-investment			668,089	597,035
Residential | One-to-four family | Real estate loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,848	1,991
Charge-offs	(93)	(6)
Recoveries	0	10
Provision for loan losses	296	(147)
Ending balance	2,051	1,848
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Specifically evaluated impaired loans			10	0
General portfolio allocation			2,041	1,848
Total allowance for loan losses	1,848	1,848	2,051	1,848
Specifically evaluated			4,222	3,342
Collectively evaluated			189,145	187,543
Total gross loans held-for-investment			193,367	190,885
Residential | Multi-family | Real estate loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	483	226
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	170	257
Ending balance	653	483
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Specifically evaluated impaired loans			0	0
General portfolio allocation			653	483
Total allowance for loan losses	483	483	653	483
Specifically evaluated			0	0
Collectively evaluated			81,233	40,584
Total gross loans held-for-investment			81,233	40,584
Residential | Mortgage warehouse
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	229	361
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	21	(132)
Ending balance	250	229
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Specifically evaluated impaired loans			0	0
General portfolio allocation			250	229
Total allowance for loan losses	250	361	250	229
Specifically evaluated			0	0
Collectively evaluated			39,247	41,586
Total gross loans held-for-investment			39,247	41,586
Commercial | Real estate loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,854	4,711
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	(1,063)	(857)
Ending balance	2,791	3,854
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Specifically evaluated impaired loans			0	0
General portfolio allocation			2,791	3,854
Total allowance for loan losses	3,854	3,854	2,791	3,854
Specifically evaluated			7,353	7,946
Collectively evaluated			323,699	301,709
Total gross loans held-for-investment			331,052	309,655
Commercial | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	156	677
Charge-offs	0	0
Recoveries	0	80
Provision for loan losses	156	(601)
Ending balance	312	156
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Specifically evaluated impaired loans			0	0
General portfolio allocation			312	156
Total allowance for loan losses	312	677	312	156
Specifically evaluated			2,714	3,596
Collectively evaluated			11,726	4,990
Total gross loans held-for-investment			14,440	8,586
Commercial | Construction | Real estate loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	98	140
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	(2)	(42)
Ending balance	96	98
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Specifically evaluated impaired loans			0	0
General portfolio allocation			96	98
Total allowance for loan losses	96	140	96	98
Specifically evaluated			0	0
Collectively evaluated			7,213	3,847
Total gross loans held-for-investment			7,213	3,847
Consumer and other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1	18
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	0	(17)
Ending balance	1	1
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Specifically evaluated impaired loans			0	0
General portfolio allocation			1	1
Total allowance for loan losses	1	1	1	1
Specifically evaluated			0	0
Collectively evaluated			122	150
Total gross loans held-for-investment			122	150
Reverse mortgage
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	54	41
Charge-offs	0	0
Recoveries	0	1
Provision for loan losses	(17)	12
Ending balance	37	54
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Specifically evaluated impaired loans			29	47
General portfolio allocation			8	7
Total allowance for loan losses	$ 54	$ 54	37	54
Specifically evaluated			848	1,223
Collectively evaluated			567	519
Total gross loans held-for-investment			$ 1,415	$ 1,742

Loans - Impaired Loans (Details

Loans - Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Unpaid Principal Balance	$ 15,863	$ 16,605
Impaired loans with no related allowance - Recorded Investment	14,734	15,657
Impaired loans with related allowance - Unpaid Principal Balance	403	478
Impaired loans with related allowance - Recorded Investment	403	450
Impaired loans - Unpaid Principal Balance	16,266	17,083
Impaired loans - Recorded Investment	15,137	16,107
Impaired loans - Related Allowance	39	47
Impaired loans with no related allowance - Average Recorded Investment	15,079	16,833
Impaired loans with no related allowance - Interest Income Recognized	860	795
Impaired loans with related allowance - Average Recorded Investment	379	1,523
Impaired loans with related allowance - Interest Income Recognized	6	2
Impaired loans - Average Recorded Investment	15,458	18,356
Impaired loans - Interest Income Recognized	866	797
Reverse mortgage
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Unpaid Principal Balance	510	846
Impaired loans with no related allowance - Recorded Investment	511	797
Impaired loans with related allowance - Unpaid Principal Balance	337	454
Impaired loans with related allowance - Recorded Investment	337	426
Impaired loans - Related Allowance	29	47
Impaired loans with no related allowance - Average Recorded Investment	728	1,110
Impaired loans with no related allowance - Interest Income Recognized	0	0
Impaired loans with related allowance - Average Recorded Investment	355	363
Impaired loans with related allowance - Interest Income Recognized	0	0
Real estate loans | Residential | One-to-four family
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Unpaid Principal Balance	4,792	3,739
Impaired loans with no related allowance - Recorded Investment	4,156	3,318
Impaired loans with related allowance - Unpaid Principal Balance	66	24
Impaired loans with related allowance - Recorded Investment	66	24
Impaired loans - Related Allowance	10	0
Impaired loans with no related allowance - Average Recorded Investment	4,071	3,575
Impaired loans with no related allowance - Interest Income Recognized	234	80
Impaired loans with related allowance - Average Recorded Investment	24	26
Impaired loans with related allowance - Interest Income Recognized	6	2
Real estate loans | Commercial
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Unpaid Principal Balance	7,632	8,266
Impaired loans with no related allowance - Recorded Investment	7,353	7,946
Impaired loans with related allowance - Unpaid Principal Balance		0
Impaired loans with related allowance - Recorded Investment		0
Impaired loans - Related Allowance		0
Impaired loans with no related allowance - Average Recorded Investment	7,685	9,303
Impaired loans with no related allowance - Interest Income Recognized	365	439
Impaired loans with related allowance - Average Recorded Investment		1,134
Impaired loans with related allowance - Interest Income Recognized		0
Commercial and industrial | Commercial
Financing Receivable, Impaired [Line Items]
Impaired loans with no related allowance - Unpaid Principal Balance	2,929	3,754
Impaired loans with no related allowance - Recorded Investment	2,714	3,596
Impaired loans with no related allowance - Average Recorded Investment	2,595	2,845
Impaired loans with no related allowance - Interest Income Recognized	$ 261	$ 276

Loans - Aging Analysis (Details

Loans - Aging Analysis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	$ 6,971	$ 3,040
Loans Receivable, Current	661,118	593,995
Total gross loans held-for-investment	668,089	597,035
Loans Receivable, Nonaccruing	5,909	8,303
Loans Receivable 89 Days and Accruing	0	0
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	3,573	0
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	96	49
Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	3,302	2,991
Residential | Mortgage warehouse
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Loans Receivable, Current	39,247	41,586
Total gross loans held-for-investment	39,247	41,586
Loans Receivable, Nonaccruing	0	0
Loans Receivable 89 Days and Accruing	0	0
Residential | Mortgage warehouse | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Residential | Mortgage warehouse | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Residential | Mortgage warehouse | Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Consumer and other
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Loans Receivable, Current	122	150
Total gross loans held-for-investment	122	150
Loans Receivable, Nonaccruing	0	0
Loans Receivable 89 Days and Accruing	0	0
Consumer and other | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Consumer and other | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Consumer and other | Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Reverse mortgage
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Loans Receivable, Current	1,415	1,742
Total gross loans held-for-investment	1,415	1,742
Loans Receivable, Nonaccruing	848	1,223
Loans Receivable 89 Days and Accruing	0	0
Reverse mortgage | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Reverse mortgage | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Reverse mortgage | Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Real estate loans | Residential | One-to-four family
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	6,971	3,040
Loans Receivable, Current	186,396	187,845
Total gross loans held-for-investment	193,367	190,885
Loans Receivable, Nonaccruing	3,963	3,062
Loans Receivable 89 Days and Accruing	0	0
Real estate loans | Residential | One-to-four family | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	3,573	0
Real estate loans | Residential | One-to-four family | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	96	49
Real estate loans | Residential | One-to-four family | Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	3,302	2,991
Real estate loans | Residential | Multi-family
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Loans Receivable, Current	81,233	40,584
Total gross loans held-for-investment	81,233	40,584
Loans Receivable, Nonaccruing	0	0
Loans Receivable 89 Days and Accruing	0	0
Real estate loans | Residential | Multi-family | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Real estate loans | Residential | Multi-family | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Real estate loans | Residential | Multi-family | Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Real estate loans | Commercial
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Loans Receivable, Current	331,052	309,655
Total gross loans held-for-investment	331,052	309,655
Loans Receivable, Nonaccruing	0	422
Loans Receivable 89 Days and Accruing	0	0
Real estate loans | Commercial | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Real estate loans | Commercial | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Real estate loans | Commercial | Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Real estate loans | Commercial | Construction
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Loans Receivable, Current	7,213	3,847
Total gross loans held-for-investment	7,213	3,847
Loans Receivable, Nonaccruing	0	0
Loans Receivable 89 Days and Accruing	0	0
Real estate loans | Commercial | Construction | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Real estate loans | Commercial | Construction | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Real estate loans | Commercial | Construction | Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Commercial and industrial | Commercial
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Loans Receivable, Current	14,440	8,586
Total gross loans held-for-investment	14,440	8,586
Loans Receivable, Nonaccruing	1,098	3,596
Loans Receivable 89 Days and Accruing	0	0
Commercial and industrial | Commercial | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Commercial and industrial | Commercial | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	0	0
Commercial and industrial | Commercial | Greater than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Past Due	$ 0	$ 0

Loans - Trouble Debt Restructur

Loans - Trouble Debt Restructurings (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)contract	Dec. 31, 2018contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract	3	0
Pre- Modifications Outstanding Recorded Investment	$ 1,512
Post- Modifications Outstanding Recorded Investment	$ 1,608
Real estate loans | Residential | One-to-four family
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract	2
Pre- Modifications Outstanding Recorded Investment	$ 1,018
Post- Modifications Outstanding Recorded Investment	$ 1,114
Commercial and industrial | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract	1
Pre- Modifications Outstanding Recorded Investment	$ 494
Post- Modifications Outstanding Recorded Investment	$ 494

Loans - Credit Quality Indicato

Loans - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	$ 668,089	$ 597,035
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	652,052	588,067
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	8,513	665
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	7,524	8,303
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Residential | Mortgage warehouse
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	39,247	41,586
Residential | Mortgage warehouse | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	39,247	41,586
Residential | Mortgage warehouse | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Residential | Mortgage warehouse | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Residential | Mortgage warehouse | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Consumer and other
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	122	150
Consumer and other | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	122	150
Consumer and other | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Consumer and other | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Consumer and other | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Reverse mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	1,415	1,742
Reverse mortgage | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	435	214
Reverse mortgage | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	132	305
Reverse mortgage | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	848	1,223
Reverse mortgage | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Real estate loans | Residential | One-to-four family
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	193,367	190,885
Real estate loans | Residential | One-to-four family | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	189,405	187,823
Real estate loans | Residential | One-to-four family | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Real estate loans | Residential | One-to-four family | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	3,962	3,062
Real estate loans | Residential | One-to-four family | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Real estate loans | Residential | Multi-family
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	81,233	40,584
Real estate loans | Residential | Multi-family | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	81,233	40,584
Real estate loans | Residential | Multi-family | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Real estate loans | Residential | Multi-family | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Real estate loans | Residential | Multi-family | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Real estate loans | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	331,052	309,655
Real estate loans | Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	322,671	309,233
Real estate loans | Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	8,381	0
Real estate loans | Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	422
Real estate loans | Commercial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Real estate loans | Commercial | Construction
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	7,213	3,847
Real estate loans | Commercial | Construction | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	7,213	3,847
Real estate loans | Commercial | Construction | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Real estate loans | Commercial | Construction | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Real estate loans | Commercial | Construction | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	0
Commercial and industrial | Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	14,440	8,586
Commercial and industrial | Commercial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	11,726	4,630
Commercial and industrial | Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	0	360
Commercial and industrial | Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	2,714	3,596
Commercial and industrial | Commercial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total gross loans held-for-investment	$ 0	$ 0

Loans - Purchased and Sold (Det

Loans - Purchased and Sold (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	$ 122,938	$ 121,704
Sales	0	18,295
Real estate loans | Residential | One-to-four family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	103,658	91,395
Sales	0	17,177
Real estate loans | Residential | Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	19,280	17,809
Sales	0	0
Real estate loans | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Purchases	0	12,500
Sales	$ 0	$ 1,118

Other Real Estate Owned, Net -

Other Real Estate Owned, Net - Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Other Real Estate [Roll Forward]
Balance, beginning of period	$ 31	$ 2,308
Loans transferred to other real estate owned	403	65
Net change in valuation allowance	(229)	(34)
Proceeds from sale of other real estate owned	(125)	(2,390)
Gain on sale of REO	48	82
Balance, end of period	$ 128	$ 31

Premises and Equipment, Net (De

Premises and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total premises and equipment, net	$ 7,033	$ 6,610
Accumulated depreciation and amortization	(3,774)	(2,954)
Total premises and equipment, net	3,259	3,656
Depreciation expense	900	700
Equipment, furniture, and software
Property, Plant and Equipment [Line Items]
Total premises and equipment, net	5,459	4,613
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total premises and equipment, net	1,372	1,795
Automobiles
Property, Plant and Equipment [Line Items]
Total premises and equipment, net	$ 202	$ 202

Other Real Estate Owned, Net _2

Other Real Estate Owned, Net - Narrative (Details)	12 Months Ended
	Dec. 31, 2019USD ($)property	Dec. 31, 2018USD ($)
Other Real Estate [Abstract]
Other real estate owned, number of properties | property	1
Gain on sale of REO	$ 48,000	$ 82,000
Other expenses related to foreclosed assets	170,000	27,000
Provision for unrealized losses	42,000	$ 34,000
Loans pledged as collateral	$ 1,700,000

Premises and Equipment, Net - W

Premises and Equipment, Net - Weighted Average (Details)	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Weighted-average remaining lease term	3 years
Weighted-average discount rate	4.21%

Premises and Equipment, Net - L

Premises and Equipment, Net - Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Rent expense		$ 1,400
Operating lease cost	$ 1,579
Variable lease cost	47
Short-term lease cost	185
Sublease income	(70)
Total lease cost	$ 1,741

Premises and Equipment, Net - M

Premises and Equipment, Net - Maturities of Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019USD ($)
Commitments and Contingencies Disclosure [Abstract]
2020	$ 1,676
2021	1,748
2022	1,548
2023	215
2024	26
Total lease payments	5,213
Less: imputed lease interest	(332)
Total lease liabilities	$ 4,881

Premises and Equipment, Net - O

Premises and Equipment, Net - Operating Leases Narrative (Details)	12 Months Ended
	Dec. 31, 2019USD ($)
Commitments and Contingencies Disclosure [Abstract]
Leases not yet commenced	$ 0
Cash paid for amounts included in the measurement of operating lease liabilities	$ 1,500,000

Deposits - Composition (Details

Deposits - Composition (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deposits [Abstract]
Noninterest bearing demand accounts	$ 1,343,667	$ 1,525,922
Interest bearing accounts:
Interest bearing demand accounts	60,794	45,889
Money market and savings accounts	85,705	77,286
Certificates of deposit	324,488	29,736
Interest bearing accounts	470,987	152,911
Deposits held-for-sale:
Noninterest bearing demand accounts	0	55,891
Interest bearing accounts	0	48,281
Deposits held-for-sale	0	104,172
Total deposits	$ 1,814,654	$ 1,783,005

Deposits - Maturities (Details)

Deposits - Maturities (Details) $ in Thousands	Dec. 31, 2019USD ($)
Time Deposits, Fiscal Year Maturity [Abstract]
2020	$ 1,199
2021	422
2022	461
2023	97,346
2024	177,451
Thereafter	47,609
Total	$ 324,488

Deposits - Narrative (Details)

Deposits - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Time Deposits [Line Items]
Certificates of deposits at or above FDIC insurance limit	$ 100,000	$ 1,600,000
Deposits from officers, directors, and affiliates	1,000,000	1,300,000
Brokered certificates of deposit	322,400,000	$ 0
Unamortized premium	$ 2,600,000
Minimum
Time Deposits [Line Items]
Maturity of time deposits	4 years
Maximum
Time Deposits [Line Items]
Maturity of time deposits	6 years

FHLB Advances and Other Borro_3

FHLB Advances and Other Borrowings - Schedule of FHLB Advances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Federal home loan bank advances	$ 49,000	$ 0
Weighted average interest rate at period-end	1.66%	0.00%
Maximum month-end balance during the period	$ 218,000	$ 15,000
Average balance outstanding during the period	$ 28,205	$ 1,274
Weighted average interest rate during the period	1.94%	1.49%

FHLB Advances and Other Borro_4

FHLB Advances and Other Borrowings - Narrative (Details)	12 Months Ended
	Dec. 31, 2019USD ($)bank	Dec. 31, 2018USD ($)
Debt Disclosure [Abstract]
FHLB advances, leverage ratio, maximum	35.00%
FHLB advances, collateral pledged	$ 875,900,000	$ 625,300,000
FHLB advances, unused borrowing capacity	554,600,000	472,300,000
Short-term Debt [Line Items]
Repurchase agreements, amount outstanding	0	0
Federal funds purchased, maximum borrowing capacity	$ 32,000,000
Number of correspondent banks | bank	3,000,000
Federal funds purchased, amount outstanding	$ 0
Federal Reserve Bank Advances
Short-term Debt [Line Items]
FRB advances, collateral pledged	10,100,000	19,000,000
FRB advances, current borrowing capacity	7,500,000
FRB advances, amount outstanding	0	$ 0
Repurchase Agreements
Short-term Debt [Line Items]
Repurchase agreements, average outstanding amount	$ 18,600,000

Notes Payable (Details)

Notes Payable (Details) - USD ($) $ in Thousands	Jan. 29, 2016	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Outstanding principal balance		$ 3,714	$ 4,857
Term Loan | 2.60% Note Payable Due January 29, 2021
Debt Instrument [Line Items]
Principal amount	$ 8,000
Interest rate	2.60%
Outstanding principal balance		3,700	$ 4,900
Principal payments for year 2020		1,100
Principal payments for year 2021		$ 2,600
Minimum | Term Loan | 2.60% Note Payable Due January 29, 2021 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate	0.00%

Subordinated Debentures, Net (D

Subordinated Debentures, Net (Details) - Subordinated Debentures - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Jan. 31, 2005	Jul. 31, 2001
Debt Instrument [Line Items]
Interest payments, deferment period	5 years
Trust One
Debt Instrument [Line Items]
Minority interest percentage	3.00%
Trust Two | 2005 Subordinated Debentures Maturing March 15, 2035
Debt Instrument [Line Items]
Principal amount		$ 3
Redemption price, percentage	100.00%
Trust Two | 2005 Subordinated Debentures Maturing March 15, 2035 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate	1.89%	185.00%
Effective interest rate	3.74%
Trust One | 2001 Subordinated Debentures Maturing July 25, 2031
Debt Instrument [Line Items]
Principal amount			$ 12.5
Effective interest rate	5.94%
Redemption price, percentage	100.00%
Trust One | 2001 Subordinated Debentures Maturing July 25, 2031 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate	2.19%		375.00%

Derivative and Hedging Activi_3

Derivative and Hedging Activities - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)instrument	Dec. 31, 2012USD ($)	Dec. 31, 2018USD ($)
Cash flow hedge interest rate floor
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Number of derivative instruments | instrument	20
Derivative, notional amount	$ 400
Upfront fee paid to counterparty	$ 20.8
Cash flow hedge interest rate cap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Upfront fee paid to counterparty		$ 2.5
Cap Agreement Expiring July 25, 2022 | Cash flow hedge interest rate cap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount		12.5
Cap Agreement Expiring March 15, 2022 | Cash flow hedge interest rate cap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, notional amount		$ 3
Fed Funds Rate | Cash flow hedge interest rate floor
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Floor interest rate	2.50%
London Interbank Offered Rate (LIBOR) | Cash flow hedge interest rate floor
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Floor interest rate	2.25%
London Interbank Offered Rate (LIBOR) | Cap Agreement Expiring July 25, 2022 | Cash flow hedge interest rate cap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cap interest rate		0.75%
London Interbank Offered Rate (LIBOR) | Cap Agreement Expiring March 15, 2022 | Cash flow hedge interest rate cap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cap interest rate		0.50%
Collateral Pledged | Cash flow hedge interest rate cap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Restricted cash	$ 0		$ 1.2

Derivative and Hedging Activi_4

Derivative and Hedging Activities - Fair Value by Balance Sheet Location (Details) - Derivatives designated as hedging instruments - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Cash flow hedge interest rate floor
Derivatives, Fair Value [Line Items]
Derivative assets	$ 23,054	$ 0
Cash flow hedge interest rate cap
Derivatives, Fair Value [Line Items]
Derivative assets	$ 386	$ 999

Derivative and Hedging Activi_5

Derivative and Hedging Activities - Amount of Gain (Loss) Recognized in OCI and Reclassified into Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Estimated net derivative gain included in OCI to be reclassified into earnings	$ 200
Estimated time for net derivative gain included in OCI to be reclassified into earnings	12 months
Cash Flow Hedge Interest Rate Floor 1 | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in OCI	$ 2,006	$ 0
Cash Flow Hedge Interest Rate Floor 2 | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in OCI	882	0
Cash flow hedge interest rate cap | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in OCI	(392)	167
Cash flow hedge interest rate swap | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Recognized in OCI	0	24
Interest income - Other interest earning assets | Cash Flow Hedge Interest Rate Floor 1 | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	(355)	0
Interest income - Securities | Cash Flow Hedge Interest Rate Floor 2 | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	(635)	0
Interest expense - Subordinated debentures | Cash flow hedge interest rate cap | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	(167)	(134)
Interest expense - FHLB advances | Cash flow hedge interest rate swap | Derivatives designated as hedging instruments
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income	$ 0	$ 54

Income Taxes - Expense (Details

Income Taxes - Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Current provision
Federal									$ 6,163	$ 5,298
State									3,304	2,922
Current provision									9,467	8,220
Federal deferred tax (benefit) expense									241	(117)
State deferred tax (benefit) expense									118	(37)
Deferred tax (benefit) expense									359	(154)
Actual tax expense	$ 1,502	$ 2,633	$ 1,693	$ 3,998	$ 2,541	$ 2,458	$ 1,711	$ 1,356	$ 9,826	$ 8,066

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Amount
Statutory federal tax									$ 7,281	$ 6,384
State tax, net of federal benefit									2,697	2,304
Tax credits									(170)	(170)
Excess tax benefit from stock-based compensation									(88)	(469)
Other items, net									106	17
Actual tax expense	$ 1,502	$ 2,633	$ 1,693	$ 3,998	$ 2,541	$ 2,458	$ 1,711	$ 1,356	$ 9,826	$ 8,066
Rate
Statutory federal tax									21.00%	21.00%
State tax, net of federal benefit									7.80%	7.60%
Tax credits									(0.50%)	(0.60%)
Excess tax benefit from stock-based compensation									(0.30%)	(1.60%)
Other items, net									0.30%	0.10%
Actual tax expense									28.30%	26.50%

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax expense	$ 1,502	$ 2,633	$ 1,693	$ 3,998	$ 2,541	$ 2,458	$ 1,711	$ 1,356	$ 9,826	$ 8,066
Effective tax rate									28.30%	26.50%
Deferred tax liabilities	$ 424								$ 424
Deferred tax assets					$ 3,329					$ 3,329

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets
Allowance for loan losses	$ 1,772	$ 1,921
Derivatives and securities available-for-sale	0	825
Accrued vacation pay	368	333
Accrued bonus	394	333
Nonaccrual loan interest	149	98
State taxes	633	552
Operating lease liabilities	1,397	232
Other	356	269
Deferred tax assets	5,069	4,563
Deferred tax liabilities
Basis difference in fixed assets	(706)	(367)
Derivatives and securities available-for-sale	(2,570)	0
Operating lease right-of-use assets	(1,308)	0
FHLB stock dividends	(101)	(100)
Deferred loan fees	(501)	(645)
Other	(307)	(122)
Deferred tax liabilities	(5,493)	(1,234)
Deferred tax liabilities	$ (424)
Deferred tax assets		$ 3,329

Commitments and Contingencies -

Commitments and Contingencies - Off-Balance Sheet Items (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Allowance for commitments	$ 100	$ 100
Total credit extension commitments	48,088	71,408
Unfunded lines of credit
Debt Instrument [Line Items]
Total credit extension commitments	47,433	71,398
Letters of credit
Debt Instrument [Line Items]
Total credit extension commitments	$ 655	$ 10

Stock-based Compensation - Narr

Stock-based Compensation - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 177,000	$ 112,000
Tax benefit from option exercises	114,000	469,000
Intrinsic value of options exercised	500,000	1,800,000
Unrecognized stock-based compensation expense related to stock options	$ 900,000
Period unrecognized expenses is expected to be recognized	3 years 7 months 6 days
Stock based compensation expense, tax benefit	$ 12,000	$ 10,000
2018 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)			1,596,753
2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)		0		730,784
Award vesting rights, percentage, change in control	100.00%
Stock options | 2018 and 2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Terms of award	P10Y
Forfeiture period after service termination	60 days
Stock option issuance exercise price percent of fair value	100.00%
Minimum | Stock options | 2018 and 2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Maximum | Stock options | 2018 and 2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years

Stock-based Compensation - Assu

Stock-based Compensation - Assumptions (Details) - Stock options - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	1.67%	2.82%
Expected term	6 years 3 months	6 years 6 months
Expected stock price volatility	30.88%	10.72%
Dividend yield	0.00%	0.00%
Weighted-average grant date fair value (in dollars per share)	$ 5.43	$ 2.44

Stock-based Compensation - Stoc

Stock-based Compensation - Stock Compensation Plans (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock options outstanding, number of options, balance (in shares) | shares	816,616
Stock options outstanding, number of options, granted (in shares) | shares	176,198
Stock options outstanding, number of options, exercised (in shares) | shares	(73,457)
Stock options outstanding, number of options, forfeited/expired (in shares) | shares	(1,500)
Stock options outstanding, number of options, balance (in shares) | shares	917,857
Stock options outstanding, weighted average remaining contractual life	4 years 3 months 18 days
Stock options outstanding, aggregate intrinsic value | $	$ 7,717
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Stock options, weighted average exercise price, balance (in dollars per share) | $ / shares	$ 5.54
Stock options, weighted average exercise price, granted (in dollars per share) | $ / shares	16.09
Stock options, weighted average exercise price, exercised (in dollars per share) | $ / shares	5.78
Stock options, weighted average exercise price, forfeited/expired (in dollars per share) | $ / shares	12
Stock options, weighted average exercise price, balance (in dollars per share) | $ / shares	$ 7.54
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Stock options outstanding, number of options, exercisable (in shares) | shares	681,909
Stock options outstanding, weighted average exercise price, exercisable (in dollars per share) | $ / shares	$ 4.97
Stock options outstanding, weighted average remaining contractual life, exercisable	2 years 6 months
Stock options outstanding, aggregate intrinsic value, exercisable | $	$ 7,460
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Stock options outstanding, number of options, vested or expected to vest (in shares) | shares	886,054
Stock options outstanding, weighted average exercise price, vested or expected to vest (in dollars per share) | $ / shares	$ 7.25
Stock options outstanding, weighted average remaining contractual life, vested or expected to vest	4 years 1 month 6 days
Stock options outstanding, aggregate intrinsic value, vested or expected to vest | $	$ 7,703

Stock-based Compensation - Rest

Stock-based Compensation - Restricted Stock Units Activity (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)$ / sharesshares
Weighted-Average Grant Date Fair Value Per Share
Period unrecognized expenses is expected to be recognized	3 years 7 months 6 days
Restricted Stock Units
Number of Shares
Beginning balance (in shares) | shares	0
Granted (in shares) | shares	82,658
Canceled or Forfeited (in shares) | shares	(31)
Ending balance (in shares) | shares	82,627
Weighted-Average Grant Date Fair Value Per Share
Beginning balance (in dollars per share) | $ / shares	$ 0
Granted (in dollars per share) | $ / shares	16.09
Canceled or Forfeited (in dollars per share) | $ / shares	16.09
Ending balance (in dollars per share) | $ / shares	$ 16.09
Unrecognized stock-based compensation expense | $	$ 1.1
Period unrecognized expenses is expected to be recognized	3 years
Minimum | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Maximum | Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years

Employee Benefit Plan (Details)

Employee Benefit Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Retirement Benefits [Abstract]
Employee participation percent	91.00%
Employer matching contribution, percent of match	25.00%	25.00%
Employer matching contribution, percent	6.00%	6.00%
Employer contribution amount	$ 0.2	$ 0.2

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
The Company
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 leverage ratio, amount	$ 240,135	$ 208,807
Tier 1 leverage ratio	11.23%	9.00%
Tier 1 leverage ratio, minimum capital adequacy, amount	$ 85,501	$ 92,812
Tier 1 leverage ratio, minimum capital adequacy	4.00%	4.00%
Common equity tier 1 capital ratio, amount	$ 224,635	$ 193,307
Common equity tier 1 capital ratio	24.52%	23.10%
Common equity tier 1 capital ratio, minimum capital adequacy, amount	$ 41,233	$ 37,650
Common equity tier 1 capital ratio, minimum capital adequacy	4.50%	4.50%
Tier 1 risk-based capital ratio, amount	$ 240,135	$ 208,807
Tier 1 risk-based capital ratio	26.21%	24.96%
Tier 1 risk-based capital ratio, minimum capital adequacy, amount	$ 54,978	$ 50,200
Tier 1 risk-based capital ratio, minimum capital adequacy	6.00%	6.00%
Total risk-based capital ratio, amount	$ 246,447	$ 215,638
Total risk-based capital ratio	26.90%	25.77%
Total risk-based capital ratio, minimum capital adequacy, amount	$ 73,304	$ 66,933
Total risk-based capital ratio, minimum capital adequacy	8.00%	8.00%
The Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier 1 leverage ratio, amount	$ 224,605	$ 197,175
Tier 1 leverage ratio	10.52%	8.51%
Tier 1 leverage ratio, minimum capital adequacy, amount	$ 85,399	$ 92,637
Tier 1 leverage ratio, minimum capital adequacy	4.00%	4.00%
Tier 1 leverage ratio, to be well capitalized, amount	$ 106,749	$ 115,796
Tier 1 leverage ratio, to be well capitalized	5.00%	5.00%
Common equity tier 1 capital ratio, amount	$ 224,605	$ 197,175
Common equity tier 1 capital ratio	24.55%	23.68%
Common equity tier 1 capital ratio, minimum capital adequacy, amount	$ 41,163	$ 37,472
Common equity tier 1 capital ratio, minimum capital adequacy	4.50%	4.50%
Common equity tier 1 capital ratio, to be well capitalized, amount	$ 59,458	$ 54,127
Common equity tier 1 capital ratio, to be well capitalized	6.50%	6.50%
Tier 1 risk-based capital ratio, amount	$ 224,605	$ 197,175
Tier 1 risk-based capital ratio	24.55%	23.68%
Tier 1 risk-based capital ratio, minimum capital adequacy, amount	$ 54,884	$ 49,963
Tier 1 risk-based capital ratio, minimum capital adequacy	6.00%	6.00%
Tier 1 risk-based capital ratio, to be well capitalized, amount	$ 73,179	$ 66,618
Tier 1 risk-based capital ratio, to be well capitalized	8.00%	8.00%
Total risk-based capital ratio, amount	$ 230,917	$ 204,006
Total risk-based capital ratio	25.24%	24.50%
Total risk-based capital ratio, minimum capital adequacy, amount	$ 73,179	$ 66,618
Total risk-based capital ratio, minimum capital adequacy	8.00%	8.00%
Total risk-based capital ratio, to be well capitalized, amount	$ 91,474	$ 83,272
Total risk-based capital ratio, to be well capitalized	10.00%	10.00%

Fair Value - Recurring Basis (D

Fair Value - Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Securities available-for-sale	$ 897,766	$ 357,178
Derivative assets	23,440	999
Recurring Basis
Assets
Securities available-for-sale	897,766	357,178
Derivative assets	23,440	999
Total	921,206	358,177
Recurring Basis | Level 1
Assets
Securities available-for-sale	0	0
Derivative assets	0	0
Total	0	0
Recurring Basis | Level 2
Assets
Securities available-for-sale	897,766	357,178
Derivative assets	23,440	999
Total	921,206	358,177
Recurring Basis | Level 3
Assets
Securities available-for-sale	0	0
Derivative assets	0	0
Total	$ 0	$ 0

Fair Value - Non-Recurring Basi

Fair Value - Non-Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Assets
Impaired loans	$ 666,272	$ 591,315
Other real estate owned	128	31	$ 2,308
Level 1
Assets
Impaired loans	0	0
Level 2
Assets
Impaired loans	0	0
Level 3
Assets
Impaired loans	666,272	591,315
Non-recurring basis
Assets
Other real estate owned	128	31
Total	492	434
Non-recurring basis | Level 1
Assets
Total	0	0
Non-recurring basis | Level 2
Assets
Other real estate owned	0	0
Total	0	0
Non-recurring basis | Level 3
Assets
Other real estate owned	128	31
Total	492	434
Reverse mortgage | Non-recurring basis
Assets
Impaired loans	308	379
Reverse mortgage | Non-recurring basis | Level 1
Assets
Impaired loans	0	0
Reverse mortgage | Non-recurring basis | Level 2
Assets
Impaired loans	0	0
Reverse mortgage | Non-recurring basis | Level 3
Assets
Impaired loans	308	379
Real estate loans | Residential | Non-recurring basis | One-to-four family
Assets
Impaired loans	56	24
Real estate loans | Residential | Non-recurring basis | Level 1 | One-to-four family
Assets
Impaired loans	0	0
Other real estate owned	0	0
Real estate loans | Residential | Non-recurring basis | Level 2 | One-to-four family
Assets
Impaired loans	0	0
Real estate loans | Residential | Non-recurring basis | Level 3 | One-to-four family
Assets
Impaired loans	$ 56	$ 24

Fair Value - Fair Value by Bala

Fair Value - Fair Value by Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financial assets:
Cash and due from banks, Carrying Amount	$ 1,579	$ 4,177
Cash and due from banks, Fair Value	1,579	4,177
Interest earning deposits, Carrying Amount	132,025	670,243
Securities held-to-maturity, Carrying Amount	0	73
Securities held-to-maturity, Fair Value	0	72
Loans held-for-investment, net, Carrying Amount	664,622	592,781
Loans held-for-investment, net, Fair Value	666,272	591,315
Loans held-for-sale, Carrying Amount	375,922	350,636
Loans held-for-sale, Fair Value	376,126	351,115
FHLB and FRB stock, Carrying Amount	10,264	9,660
Accrued interest receivable, Carrying Amount	5,950	5,770
Accrued interest receivable, Fair Value	5,950	5,770
Financial liabilities:
Deposits, Carrying Amount	1,814,654	1,783,005
Deposits, Carrying Amount		1,678,833
Deposits, Fair Value	1,826,100	1,621,138
Deposits held-for-sale, Carrying Amount	0	104,172
Deposits held-for-sale, Fair Value		95,215
Federal home loan bank advances	49,000	0
FHLB advances, Fair Value	49,000
Notes payable, Carrying Amount	3,714	4,857
Notes payable, Fair Value	3,714	4,857
Subordinated debentures, Carrying Amount	15,816	15,802
Subordinated debentures, Fair Value	15,203	15,414
Accrued interest payable, Carrying Amount	559	451
Accrued interest payable, Fair Value	559	451
Interest earning deposits
Financial assets:
Cash and due from banks, Fair Value	132,025	670,243
Level 1
Financial assets:
Cash and due from banks, Fair Value	1,579	4,177
Securities held-to-maturity, Fair Value		0
Loans held-for-investment, net, Fair Value	0	0
Loans held-for-sale, Fair Value	0	0
Accrued interest receivable, Fair Value	86	571
Financial liabilities:
Deposits, Fair Value	0	0
Deposits held-for-sale, Fair Value		0
FHLB advances, Fair Value	0
Notes payable, Fair Value	0	0
Subordinated debentures, Fair Value	0	0
Accrued interest payable, Fair Value	0	0
Level 1 | Interest earning deposits
Financial assets:
Cash and due from banks, Fair Value	132,025	670,243
Level 2
Financial assets:
Cash and due from banks, Fair Value	0	0
Securities held-to-maturity, Fair Value		72
Loans held-for-investment, net, Fair Value	0	0
Loans held-for-sale, Fair Value	376,126	351,115
Accrued interest receivable, Fair Value	3,643	1,430
Financial liabilities:
Deposits, Fair Value	1,826,100	1,621,138
Deposits held-for-sale, Fair Value		95,215
FHLB advances, Fair Value	49,000
Notes payable, Fair Value	3,714	4,857
Subordinated debentures, Fair Value	15,203	15,414
Accrued interest payable, Fair Value	559	451
Level 2 | Interest earning deposits
Financial assets:
Cash and due from banks, Fair Value	0	0
Level 3
Financial assets:
Cash and due from banks, Fair Value	0	0
Securities held-to-maturity, Fair Value		0
Loans held-for-investment, net, Fair Value	666,272	591,315
Loans held-for-sale, Fair Value	0	0
Accrued interest receivable, Fair Value	2,221	3,769
Financial liabilities:
Deposits, Fair Value	0	0
Deposits held-for-sale, Fair Value		0
FHLB advances, Fair Value	0
Notes payable, Fair Value	0	0
Subordinated debentures, Fair Value	0	0
Accrued interest payable, Fair Value	0	0
Level 3 | Interest earning deposits
Financial assets:
Cash and due from banks, Fair Value	$ 0	$ 0

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Basic
Net income	$ 3,598	$ 6,656	$ 5,156	$ 9,436	$ 8,020	$ 6,279	$ 4,491	$ 3,543	$ 24,846	$ 22,333
Weighted average common shares outstanding (in shares)									17,957	16,543
Basic earnings per common share (in dollars per share)	$ 0.20	$ 0.37	$ 0.29	$ 0.53	$ 0.45	$ 0.35	$ 0.25	$ 0.28	$ 1.38	$ 1.35
Diluted
Net income	$ 3,598	$ 6,656	$ 5,156	$ 9,436	$ 8,020	$ 6,279	$ 4,491	$ 3,543	$ 24,846	$ 22,333
Weighted average common shares outstanding for basic earnings per common share (in shares)									17,957	16,543
Add: Dilutive effects of assumed exercise of stock options (in shares)									428	480
Average shares and dilutive potential common shares (in shares)									18,385	17,023
Dilutive earnings per common share (in dollars per share)	$ 0.19	$ 0.36	$ 0.28	$ 0.52	$ 0.44	$ 0.34	$ 0.25	$ 0.27	$ 1.35	$ 1.31
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share awards excluded from computation of diluted earnings per share, because they were anti-dilutive (in shares)									127	85

Shareholders' Equity - Narrativ

Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 15, 2019	Nov. 07, 2019	Feb. 23, 2018	Mar. 31, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)						10,000,000	10,000,000
Preferred stock, par value (in dollars per share)						$ 0.01	$ 0.01
Proceeds from common stock issuance, net						$ 6,462	$ 107,884
Equity capital contributed to Bank subsidiary					$ 60,000
Payments for repurchase of common stock							$ 11,371
Class A Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)						125,000,000	125,000,000
Common stock, par value (in dollars per share)						$ 0.01	$ 0.01
Class B Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)						25,000,000	25,000,000
Common stock, par value (in dollars per share)						$ 0.01	$ 0.01
Shareholder exchanges of Class B common stock for Class A common stock (in shares)				(1,165,000)
Class A and Class B Common Stock
Class of Stock [Line Items]
Repurchase of common stock (in shares)			997,506
Payments for repurchase of common stock			$ 11,400
Increase in stockholder's equity			96,500
Private Placement
Class of Stock [Line Items]
Costs incurred for private placement			$ 6,100
Private Placement | Class A Common Stock
Class of Stock [Line Items]
Net proceeds from stock issuance (in shares)			9,500,000
Proceeds from common stock issuance, net			$ 114,000
Proceeds from issuance of private placement, net			$ 107,900
IPO
Class of Stock [Line Items]
Net proceeds from stock issuance (in shares)		3,300,000
Offering price per share (in USD per share)		$ 12
Proceeds from common stock issuance, net		$ 9,900
Proceeds from issuance of private placement, net		$ 6,500
IPO - shares offered by the Company
Class of Stock [Line Items]
Net proceeds from stock issuance (in shares)		824,605
IPO - shares offered by selling shareholders
Class of Stock [Line Items]
Net proceeds from stock issuance (in shares)		2,508,728
Over-Allotment Option
Class of Stock [Line Items]
Net proceeds from stock issuance (in shares)	499,999

Shareholders' Equity - Accumula

Shareholders' Equity - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense	$ 1,502	$ 2,633	$ 1,693	$ 3,998	$ 2,541	$ 2,458	$ 1,711	$ 1,356	$ 9,826	$ 8,066
Beginning balance				191,246				73,800	191,246	73,800
Current period other comprehensive income before reclassification									8,462	(844)
Current period other comprehensive income before reclassification									8,979
Amounts reclassified from accumulated other comprehensive income									(517)
Ending balance	231,036				191,246				231,036	191,246
Retained Earnings
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance				67,464				45,131	67,464	45,131
Ending balance	92,310				67,464				92,310	67,464
Unrealized Gains/ (Losses) on Available-for- Sale Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance				(1,785)				(756)	(1,785)	(756)
Current period other comprehensive income before reclassification										(1,029)
Current period other comprehensive income before reclassification									6,373
Amounts reclassified from accumulated other comprehensive income									(517)
Ending balance	4,071				(1,785)				4,071	(1,785)
Derivative Asset/(Liability)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance				(276)				(461)	(276)	(461)
Current period other comprehensive income before reclassification										185
Current period other comprehensive income before reclassification									2,606
Amounts reclassified from accumulated other comprehensive income									0
Ending balance	2,330				(276)				2,330	(276)
Accumulated Other Comprehensive Income/(Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance				$ (2,061)				$ (1,217)	(2,061)	(1,217)
Ending balance	$ 6,401				$ (2,061)				$ 6,401	$ (2,061)

Parent Company Financial Info_3

Parent Company Financial Information - Statement of Finacial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Cash and due from banks	$ 1,579	$ 4,177
Other assets	7,647	4,741
Total assets	2,128,127	2,004,318
Notes payable	3,714	4,857
Subordinated debentures, net	15,816	15,802
Accrued expenses and other liabilities	9,026	9,408
Total liabilities	1,897,091	1,813,072
Commitments and contingencies
Preferred stock	0	0
Additional paid-in capital	132,138	125,665
Retained earnings	92,310	67,464
Accumulated other comprehensive income (loss)	6,401	(2,061)
Total shareholders’ equity	231,036	191,246	$ 73,800
Total liabilities and shareholders’ equity	2,128,127	2,004,318
The Company
Condensed Financial Statements, Captions [Line Items]
Cash and due from banks	19,086	15,355
Investments in subsidiaries	231,927	195,872
Other assets	816	2,904
Total assets	251,829	214,131
Notes payable	3,714	4,857
Subordinated debentures, net	15,816	15,802
Accrued expenses and other liabilities	1,263	2,226
Total liabilities	20,793	22,885
Commitments and contingencies
Preferred stock	0	0
Common stock	187	178
Additional paid-in capital	132,138	125,665
Retained earnings	92,310	67,464
Accumulated other comprehensive income (loss)	6,401	(2,061)
Total shareholders’ equity	231,036	191,246
Total liabilities and shareholders’ equity	$ 251,829	$ 214,131

Parent Company Financial Info_4

Parent Company Financial Information - Statement of Operations (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Interest expense
Total interest income	$ 20,112	$ 21,388	$ 19,472	$ 20,063	$ 21,601	$ 18,707	$ 16,833	$ 15,611	$ 81,035	$ 72,752
Notes payable and other									747	408
Subordinated debentures									1,072	915
Total interest expense	4,482	2,945	1,904	747	738	737	784	870	10,078	3,129
Noninterest expense
Salaries and employee benefits									33,897	29,898
Occupancy and equipment									3,638	3,091
Communications and data processing									4,607	3,088
Professional services									4,605	6,050
Other general and administrative									3,543	3,348
Total noninterest expense	13,660	12,611	12,721	13,486	13,968	11,417	11,843	11,086	52,478	48,314
Income before income taxes	5,100	9,289	6,849	13,434	10,561	8,737	6,202	4,899	34,672	30,399
Income tax benefit	1,502	2,633	1,693	3,998	2,541	2,458	1,711	1,356	9,826	8,066
Net income	$ 3,598	$ 6,656	$ 5,156	$ 9,436	$ 8,020	$ 6,279	$ 4,491	$ 3,543	24,846	22,333
The Company
Interest expense
Total interest income									29	27
Notes payable and other									224	405
Subordinated debentures									1,072	915
Total interest expense									1,296	1,320
Dividends from subsidiaries									0	525
Noninterest expense
Salaries and employee benefits									957	652
Occupancy and equipment									92	61
Communications and data processing									173	89
Professional services									687	848
Other general and administrative									127	65
Total noninterest expense									2,036	1,715
Income before income taxes									(3,303)	(2,483)
Income tax benefit									(895)	(793)
Equity in undistributed earnings of subsidiaries									27,254	24,023
Net income									$ 24,846	$ 22,333

Parent Company Financial Info_5

Parent Company Financial Information - Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net income	$ 3,598	$ 6,656	$ 5,156	$ 9,436	$ 8,020	$ 6,279	$ 4,491	$ 3,543	$ 24,846	$ 22,333
Adjustments to reconcile net income to net cash used in operating activities:
Other, net									1,147	(67)
Changes in operating assets and liabilities:
Accrued expenses and other liabilities									(3,328)	2,967
Net cash used in operating activities									(126,862)	(3,067)
Cash flows from investing activities
Net cash used in investing activities									(574,501)	(206,633)
Cash flows from financing activities
Payments made on notes payable									(1,143)	(1,143)
Proceeds from common stock issuance, net									6,462	107,884
Repurchase of common stock									0	(11,371)
Other, net									285	(1,109)
Net cash provided by financing activities									160,547	86,452
Net decrease in cash and cash equivalents									(540,816)	(123,248)
Cash and cash equivalents, beginning of year				674,420				797,668	674,420	797,668
Cash and cash equivalents, end of year	133,604				674,420				133,604	674,420
The Company
Cash flows from operating activities
Net income									24,846	22,333
Adjustments to reconcile net income to net cash used in operating activities:
Equity in undistributed earnings of subsidiaries									(27,254)	(24,023)
Other, net									403	370
Changes in operating assets and liabilities:
Other assets									1,538	(1,736)
Accrued expenses and other liabilities									(944)	918
Net cash used in operating activities									(1,411)	(2,138)
Cash flows from investing activities
Investments in subsidiaries									0	(80,000)
Net cash used in investing activities									0	(80,000)
Cash flows from financing activities
Payments made on notes payable									(1,143)	(1,143)
Proceeds from common stock issuance, net									6,454	107,884
Repurchase of common stock									0	(11,371)
Other, net									(169)	(608)
Net cash provided by financing activities									5,142	94,762
Net decrease in cash and cash equivalents									3,731	12,624
Cash and cash equivalents, beginning of year				$ 15,355				$ 2,731	15,355	2,731
Cash and cash equivalents, end of year	$ 19,086				$ 15,355				$ 19,086	$ 15,355

Quarterly Financial Data (Una_3

Quarterly Financial Data (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 20,112	$ 21,388	$ 19,472	$ 20,063	$ 21,601	$ 18,707	$ 16,833	$ 15,611	$ 81,035	$ 72,752
Interest expense	4,482	2,945	1,904	747	738	737	784	870	10,078	3,129
Total interest expense	15,630	18,443	17,568	19,316	20,863	17,970	16,049	14,741	70,957	69,623
Reversal of provision for loan losses	0	(858)	152	267	(1,675)	0	5	143	(439)	(1,527)
Net interest income after provision for loan losses	15,630	19,301	17,416	19,049	22,538	17,970	16,044	14,598	71,396	71,150
Noninterest income	3,130	2,599	2,154	7,871	1,991	2,184	2,001	1,387	15,754	7,563
Noninterest expense	13,660	12,611	12,721	13,486	13,968	11,417	11,843	11,086	52,478	48,314
Income before income taxes	5,100	9,289	6,849	13,434	10,561	8,737	6,202	4,899	34,672	30,399
Income tax expense	1,502	2,633	1,693	3,998	2,541	2,458	1,711	1,356	9,826	8,066
Net income	$ 3,598	$ 6,656	$ 5,156	$ 9,436	$ 8,020	$ 6,279	$ 4,491	$ 3,543	$ 24,846	$ 22,333
Basic earnings per share (in dollars per share)	$ 0.20	$ 0.37	$ 0.29	$ 0.53	$ 0.45	$ 0.35	$ 0.25	$ 0.28	$ 1.38	$ 1.35
Diluted earnings per share (in dollars per share)	$ 0.19	$ 0.36	$ 0.28	$ 0.52	$ 0.44	$ 0.34	$ 0.25	$ 0.27	$ 1.35	$ 1.31

Subsequent Events (Details)

Subsequent Events (Details) - USD ($)	Mar. 10, 2020	Mar. 10, 2020	Feb. 28, 2020	Dec. 31, 2019	Mar. 10, 2020	Dec. 31, 2019	Dec. 31, 2018
Subsequent Event [Line Items]
Certificates of deposit				$ 324,488,000		$ 324,488,000	$ 29,736,000
Federal home loan bank advances				49,000,000		49,000,000	0
Proceeds from sale of securities available-for-sale						42,005,000	$ 0
Subsequent Event
Subsequent Event [Line Items]
FHLB advances, term					5 years
Federal home loan bank advances	$ 64,000,000	$ 64,000,000			$ 64,000,000
Deposits and FHLB advances associated with hedging strategy	$ 325,000,000	$ 325,000,000			$ 325,000,000
Deposits and FHLB advances, weighted average maturity term		4 years 10 months 24 days
Deposits and FHLB advances, interest rate	1.76%	1.76%			1.76%
Cash flow hedge interest rate floor
Subsequent Event [Line Items]
Derivative, notional amount				$ 400,000,000		$ 400,000,000
Cash flow hedge interest rate floor | Subsequent Event
Subsequent Event [Line Items]
Derivative, notional amount			$ 200,000,000
Floor interest rate			2.50%
Proceeds from sale of derivative			$ 13,000,000
Gain on sale of derivatives			$ 8,400,000
Weighted-average remaining term			4 years 1 month 6 days
Callable Brokered Certificates Of Deposit
Subsequent Event [Line Items]
Deposits, weighted average maturity term				4 years 7 months 6 days
Deposits, interest rate				2.29%		2.29%
Callable Brokered Certificates Of Deposit | Subsequent Event
Subsequent Event [Line Items]
Calls of certificates of deposits					$ 186,100,000
Unamortized premium, callable certificate of deposit	$ 1,300,000	$ 1,300,000			1,300,000
Certificates of deposit	122,100,000	$ 122,100,000			$ 122,100,000
Fixed-rate commercial mortgage-backed securities, private-label | Subsequent Event
Subsequent Event [Line Items]
Proceeds from sale of securities available-for-sale	12,800,000
Gain on sale recognized	$ 1,200,000