First Seacoast Bancorp (FSEA) 10-Q 14 Aug 20 2020 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Aug. 14, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Trading Symbol	FSEA
Title of 12(b) Security	Common stock, $0.01 par value per share
Security Exchange Name	NASDAQ
Entity Registrant Name	First Seacoast Bancorp
Entity Central Index Key	0001769267
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Common Stock, Shares Outstanding		6,083,500
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Ex Transition Period	false
Entity Shell Company	false
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	X1
Entity Address, Address Line One	633 Central Avenue
Entity Address, City or Town	Dover
Entity Address, State or Province	NH
City Area Code	603
Local Phone Number	742-4680
Entity Address, Postal Zip Code	03820
Entity Tax Identification Number	84-2404519
Entity File Number	001-38985

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Jun. 30, 2020	Dec. 31, 2019
ASSETS
Cash and due from banks		$ 30,625	$ 4,009
Interest bearing time deposits with other banks		2,488	2,735
Securities available-for-sale, at fair value		44,223	44,785
Federal Home Loan Bank stock		2,776	2,971
Loans		381,488	344,855
Less allowance for loan losses		(3,153)	(2,875)
Net loans		378,335	341,980
Land, building and equipment, net		5,311	5,338
Bank-owned life insurance		4,292	4,267
Accrued interest receivable		1,360	1,235
Other assets		1,998	2,173
Total assets		471,408	409,493
Deposits:
Non-interest bearing deposits		59,942	41,586
Interest bearing deposits		270,683	240,030
Total deposits		330,625	281,616
Advances from Federal Home Loan Bank		51,312	66,219
Advances from Federal Reserve Bank		25,713
Mortgagors’ tax escrow		706	586
Deferred compensation liability		1,590	1,607
Other liabilities		3,090	2,399
Total liabilities		413,036	352,427
Stockholders' Equity:
Preferred Stock, $.01 par value, 10,000,000 shares authorized as of June 30, 2020 and December 31, 2019; none issued and outstanding as of June 30, 2020 and December 31, 2019
Common Stock, $.01 par value, 90,000,000 shares authorized as of June 30, 2020 and December 31, 2019; 6,083,500 shares issued and outstanding as of June 30, 2020 and December 31, 2019		61	61
Additional paid-in capital		25,622	25,636
Equity capital		33,901	33,113
Accumulated other comprehensive income	[1]	994	521
Unearned compensation - ESOP 220,587 and 226,549 shares unallocated at June 30, 2020 and December 31, 2019, respectively		(2,206)	(2,265)
Total stockholders' equity		58,372	57,066
Total liabilities and stockholders' equity		$ 471,408	$ 409,493
[1]	All amounts are net of tax

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Common stock par value per share	$ 0.01	$ 0.01
Common stock,number of shares authorized	90,000,000	90,000,000
Common stock,number of shares issued	6,083,500	6,083,500
Common stock,number of shares outstanding	6,083,500	6,083,500
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
ESOP,Unearned Compensation,Shares	220,587	226,549

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Interest and dividend income:
Interest and fees on loans	$ 3,606	$ 3,487	$ 7,215	$ 6,865
Interest on debt securities:
Taxable	64	205	151	417
Non-taxable	224	136	414	251
Total interest on debt securities	288	341	565	668
Dividends	36	58	78	119
Total interest and dividend income	3,930	3,886	7,858	7,652
Interest expense:
Interest on deposits	420	562	934	1,076
Interest on borrowed funds	239	505	515	1,020
Total interest expense	659	1,067	1,449	2,096
Net interest and dividend income	3,271	2,819	6,409	5,556
Provision for loan losses	160	25	275	25
Net interest income after provision for loan losses	3,111	2,794	6,134	5,531
Noninterest income:
Customer service fees	225	254	457	473
Gain on sale of loans	166	24	218	35
Securities gains (losses), net	169	(2)	283	(10)
Income from bank-owned life insurance	21	29	25	59
Loan servicing fee income (loss)	18	(20)	(7)	(25)
Investment services fees	52	61	99	105
Other income	10	12	25	24
Total noninterest income	661	358	1,100	661
Noninterest expense:
Salaries and employee benefits	1,962	1,773	3,952	3,525
Director compensation	67	76	125	156
Occupancy expense	171	169	324	340
Equipment expense	146	133	290	265
Marketing	67	165	158	247
Data processing	292	85	559	304
Deposit insurance fees	17	65	47	120
Professional fees and assessments	224	113	420	243
Debit card fees	67	40	116	75
Employee travel and education expenses	22	68	54	119
Other expense	183	246	355	397
Total noninterest expense	3,218	2,933	6,400	5,791
Income before income tax expense	554	219	834	401
Income tax expense	23	6	46	10
Net income	$ 531	$ 213	$ 788	$ 391
Earnings per share:
Basic	$ 0.09		$ 0.13
Diluted	$ 0.09		$ 0.13
Weighted Average Shares:
Basic	5,862,913		5,861,423
Diluted	5,862,913		5,861,423

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020		Jun. 30, 2019		Jun. 30, 2020	Jun. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 531		$ 213		$ 788	$ 391
Other comprehensive income, net of income taxes:
Unrealized holding gains on securities available-for-sale arising during the period net of income taxes of $163, $124, $257 and $318, respectively	436		332		688	850
Reclassification adjustment for (gains)/losses and net amortization or accretion on securities available-for-sale included in net income net of income taxes of $18, $4, $36 and $13, respectively	(49)		12		(96)	37
Total unrealized gains on securities	387		344		592	887
Change in interest rate swaps net of income taxes of $(45), $-0-, $(45) and $-0-, respectively	(119)				(119)
Other comprehensive income	268	[1]	344	[1]	473	887
Comprehensive income	$ 799		$ 557		$ 1,261	$ 1,278
[1]	All amounts are net of tax

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement Of Income And Comprehensive Income [Abstract]
Unrealized holding gains (losses) on securities available-for-sale arising during the period net of income taxes	$ 163	$ 124	$ 257	$ 318
Reclassification adjustment for gains and losses and net amortization or accretion on securities available-for-sale included in net income net of income taxes	18	4	36	13
Change in interest rate swaps net of income taxes	$ (45)	$ 0	$ (45)	$ 0

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total		Common Stock [Member]	Additional Paid-in Capital [Member]	Equity Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Unearned Compensation ESOP [Member]
Beginning Balance at Dec. 31, 2018	$ 32,727				$ 33,192	$ (465)
Net income	178				178
Other comprehensive income	543	[1]				543
Ending Balance at Mar. 31, 2019	33,448				33,370	78
Beginning Balance at Dec. 31, 2018	32,727				33,192	(465)
Net income	391
Other comprehensive income	887
Ending Balance at Jun. 30, 2019	34,005				33,583	422
Beginning Balance at Mar. 31, 2019	33,448				33,370	78
Net income	213				213
Other comprehensive income	344	[1]				344
Ending Balance at Jun. 30, 2019	34,005				33,583	422
Beginning Balance at Dec. 31, 2019	57,066		$ 61	$ 25,636	33,113	521	$ (2,265)
Beginning Balance (shares) at Dec. 31, 2019			6,083,500
Net income	257				257
Other comprehensive income	205	[1]				205
ESOP shares earned - 2,981 shares	26			(3)			29
Ending Balance at Mar. 31, 2020	57,554		$ 61	25,633	33,370	726	(2,236)
Ending Balance (shares) at Mar. 31, 2020			6,083,500
Beginning Balance at Dec. 31, 2019	57,066		$ 61	25,636	33,113	521	(2,265)
Beginning Balance (shares) at Dec. 31, 2019			6,083,500
Net income	788
Other comprehensive income	473
Ending Balance at Jun. 30, 2020	58,372		$ 61	25,622	33,901	994	(2,206)
Ending Balance (shares) at Jun. 30, 2020			6,083,500
Beginning Balance at Mar. 31, 2020	57,554		$ 61	25,633	33,370	726	(2,236)
Beginning Balance (shares) at Mar. 31, 2020			6,083,500
Net income	531				531
Other comprehensive income	268	[1]				268
ESOP shares earned - 2,981 shares	19			(11)			30
Ending Balance at Jun. 30, 2020	$ 58,372		$ 61	$ 25,622	$ 33,901	$ 994	$ (2,206)
Ending Balance (shares) at Jun. 30, 2020			6,083,500
[1]	All amounts are net of tax

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - shares	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020
Statement Of Stockholders Equity [Abstract]
Number of shares earned and committed for the quarter, ESOP	2,981	2,981

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income	$ 788	$ 391
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
ESOP expense	45
Depreciation	290	265
Net amortization of bond premium	151	40
Provision for loan losses	275	25
Gain on sale of loans	(218)	(35)
Securities (gains) losses, net	(283)	10
Proceeds from loans sold	9,037	2,206
Origination of loans sold	(8,819)	(2,171)
Increase in bank-owned life insurance	(25)	(59)
Increase (decrease) in deferred fees on loans	1,089	(12)
Deferred tax benefit	(306)	(130)
Increase in accrued interest receivable	(125)	(84)
Decrease (increase) in other assets	261	(913)
Decrease in deferred compensation liability	(17)	(15)
Increase in other liabilities	571	47
Net cash provided by (used in) operating activities	2,714	(435)
Cash flows from investing activities:
Proceeds from sales and maturities of securities available-for-sale	19,421	7,009
Purchase of securities available-for-sale	(17,914)	(9,916)
Purchase of property and equipment	(262)	(120)
Loan purchases	(9,901)
Loan originations and principal collections, net	(27,819)	(13,168)
Net redemption of Federal Home Loan Bank stock	195	1,250
Proceeds from sales of interest bearing time deposits with other banks	247	1,739
Net cash used by investing activities	(36,033)	(13,206)
Cash flows from financing activities:
Net increase (decrease) in NOW, demand deposits, money market and savings accounts	51,979	(2,971)
Net (decrease) increase in certificates of deposit	(2,970)	12,429
Increase in mortgagors’ escrow accounts	120	58
Proceeds from stock subscriptions		28,609
Net cash provided by financing activities	59,935	18,400
Net change in cash and cash equivalents	26,616	4,759
Cash and cash equivalents at beginning of period	4,009	5,889
Cash and cash equivalents at end of period	30,625	10,648
Cash activities:
Cash paid for interest	1,435	2,132
Cash paid for income taxes	59	13
Effect of change in fair value of securities available-for-sale:
Securities available-for-sale	812	1,219
Deferred taxes	(220)	(332)
Total unrealized gains on securities	592	887
Effect of change in fair value of interest rate swaps:
Interest rate swaps	(164)
Deferred taxes	45
Other comprehensive income	(119)
Federal Home Loan Bank Advances [Member]
Cash flows from financing activities:
Proceeds from short-term FHLB advances	5,000	137,654
Payments on short-term FHLB advances	(29,907)	$ (157,379)
Proceeds from long-term FHLB advances	20,000
Payments on long-term FHLB advances	(10,000)
FRB [Member]
Cash flows from financing activities:
Proceeds from short-term FHLB advances	$ 25,713

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	1. Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited consolidated financial statements of First Seacoast Bancorp (the “Company”) were prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim consolidated financial information, general practices within the banking industry and with instructions for Form 10-Q and Regulation S-X. Accordingly, these interim financial statements do not include all the information or footnotes required by GAAP for annual financial statements. However, in the opinion of management, all adjustments (consisting solely of normal recurring adjustments) necessary for a fair presentation of these consolidated financial statements have been included. The results of operations for the interim periods disclosed herein are not necessarily indicative of the results which may be expected for the entire year. These statements should be read in conjunction with the audited consolidated financial statements and notes thereto contained in the Annual Report on Form 10-K for the fiscal year ended December 31, 2019, as filed with the U.S. Securities and Exchange Commission (“SEC”) on March 27, 2020. The accompanying consolidated financial statements include the accounts of the Company, its wholly owned subsidiary, First Seacoast Bank (the “Bank”), and the Bank’s wholly owned subsidiary, FSB Service Corporation, Inc. All significant intercompany balances and transactions have been eliminated in consolidation. Corporate Structure The Company is the holding company for the Bank (formerly named Federal Savings Bank). Effective July 16, 2019, pursuant to a Plan of Reorganization from Mutual Savings Bank to Mutual Holding Company and Stock Issuance Plan (the “Plan of Reorganization”), the Bank reorganized into the mutual holding company structure and the Company completed a concurrent stock offering (collectively, the “Reorganization”). In the stock offering, the Company sold a total of 2,676,740 shares of common stock, which included 238,473 shares sold to the First Seacoast Bank Employee Stock Ownership Plan (the “ESOP”), at a price of $10.00 per share. In addition, as part of the Reorganization, the Company issued 3,345,925 shares of common stock to First Seacoast Bancorp, MHC (the “MHC”), the Bank’s parent mutual holding company, and 60,835 shares of common stock and $150,000 in cash to First Seacoast Community Foundation, Inc. (the “Foundation”), a charitable foundation formed in connection with the reorganization and dedicated to supporting charitable organizations operating in the Bank’s local community. The Company’s common stock began trading on the NASDAQ Capital Market under the symbol “FSEA” on July 17, 2019. Pursuant to the Plan of Reorganization, the Bank adopted an employee stock ownership plan (“ESOP”), which purchased 238,473 shares of common stock in the stock offering with the proceeds of a loan from the Company. As a result of the Reorganization, a total of 6,083,500 shares of common stock of the Company are issued and outstanding, of which 55% are issued to the MHC, 44% were sold to the Bank’s eligible members, the ESOP, and certain other persons in the stock offering, and 1% were contributed to the Foundation. Expenses incurred related to the offering were $1.6 million and were deducted from the stock offering proceeds. The Bank focuses on four core services that center around customer needs. The core services include residential lending, commercial banking, personal banking, and wealth management. The Bank offers a full range of commercial and consumer banking services through its network of five full-service branch locations. Banking services, the Company’s only reportable operating segment, is managed as a single strategic unit. The Bank is engaged principally in the business of attracting deposits from the public and investing those deposits. The Bank invests those funds in various types of loans, including residential and commercial real estate and a variety of commercial and consumer loans. The Bank also invests its deposits and borrowed funds in investment securities. Deposits at the Bank are insured by the Federal Deposit and Insurance Corporation (“FDIC”) for the maximum amount permitted by FDIC regulations. Investment management services are offered at the Company’s full-service wealth management office in Dover, New Hampshire. The assets held for wealth management customers are not assets of the Company and, accordingly, are not reflected in the accompanying balance sheets. Assets under management totaled approximately $49.6 million and $49.3 million at June 30, 2020 and December 31, 2019, respectively. Our wealth management group, FSB Wealth Management, assists individuals and families in building and preserving their wealth by providing investment services. The investment management group manages portfolios utilizing a variety of investment products. This group also provides a full-service brokerage offering equities, mutual funds, life insurance and annuity products. Recently Adopted Accounting Standards As an “emerging growth company,” as defined in Title 1 of Jumpstart Our Business Startups (JOBS) Act, the Company has elected to use the extended transition period to delay adoption of new or reissued accounting pronouncements applicable to public companies until such pronouncements are made applicable to private companies. As a result, the Company’s consolidated financial statements may not be comparable to the financial statements of public companies that comply with such new or revised accounting standards without an extended transition period. As of June 30, 2020, there is no significant difference in the comparability of the Company’s consolidated financial statements as a result of this extended transition period except for the accounting treatment for measuring and recording the Company’s allowance for loan losses. The Company measures and records an allowance for loan losses based upon the incurred loss model while other public companies may be required to calculate their allowance for loan losses based upon the current expected credit loss (“CECL”) model. 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 Recent Accounting Pronouncements In June 2020, the FASB issued ASU No. 2020-05, “ Revenue from Contracts with Customers (Topic 606) and Leases (Topic 842): Effective Dates for Certain Entities,” Revenue from Contracts with Customers (Topic 606),” Leases (Topic 842),” Revenue from Contracts with Customers (Topic 606),” Leases (Topic 842),” In March 2020, the FASB issued ASU No. 2020-04, “ Reference Rate Reform (Topic 848), In February 2020, the FASB issued ASU 2020-2, “Financial Instruments – Credit Losses (Topic 326) and Leases (Topic 842) - Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 119 and Update to SEC Section on Effective Date Related to Accounting Standards Update No. 2016-02, Leases (Topic 842).” In January 2020, the FASB issued ASU 2020-1, “Investments – Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) – Clarifying the Interactions Between Topic 321, Topic 323, and T 815 (A Consensus of the Emerging Issues Task Force),” In December 2019, the FASB issued ASU 2019-12, “ Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” In November 2019, the FASB issued ASU 2019-11, “ Codification Improvements to Topic 326, Financial Instruments – Credit Losses,” Financial Instruments – Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” Leases (Topic 842)” Targeted Improvements to Accounting for Hedging Activities,” In February 2016, the FASB issued ASU 2016-02, “ Leases (Topic 842).” Codification Improvements to Topic 842, Leases,” Leases (Topic 842) – Targeted Improvements,” In June 2016, the FASB issued ASU 2016-13, “ Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Codification Improvements to Topic 326, Financial Instruments-Credit Losses Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments Financial Instruments—Credit Losses, Topic 326 In August 2018, the FASB issued ASU 2018-14, “Compensation—Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20).”

Cash and Due From Banks

Cash and Due From Banks	6 Months Ended
	Jun. 30, 2020
Cash And Due From Banks [Abstract]
Cash And Due From Banks	2. Cash and Due From Banks At June 30, 2020 and December 31, 2019, cash and due from banks totaled $30.6 million and $4.0 million, respectively. The Company pledged cash collateral to derivative counterparties totaling $525,000 and $-0- at June 30, 2020 and December 31, 2019, respectively. See Note 11 for a discussion of the Company’s derivative and hedging activities.

Securities Available-for-Sale

Securities Available-for-Sale	6 Months Ended
	Jun. 30, 2020
Available For Sale Securities [Abstract]
Securities Available for Sale	3 . Securities Available-for-Sale The amortized cost and fair value of securities available-for-sale, and the corresponding amounts of gross unrealized gains and losses, are as follows as of June 30, 2020 and December 31, 2019: June 30, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in thousands) U.S. Government-sponsored enterprises obligations $ 1,000 $ 11 $ — $ 1,011 U.S. Government agency small business administration pools guaranteed by SBA 2,620 61 — 2,681 Collateralized mortgage obligations issued by the FHLMC 772 15 — 787 Residential mortgage backed securities 2,684 75 — 2,759 Municipal bonds 35,620 1,402 (37 ) 36,985 $ 42,696 $ 1,564 $ (37 ) $ 44,223 December 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in thousands) U.S. Government-sponsored enterprises obligations $ 9,000 $ 11 $ (14 ) $ 8,997 U.S. Government agency small business administration pools guaranteed by SBA 2,760 — (20 ) 2,740 Collateralized mortgage obligations issued by the FHLMC 986 — (6 ) 980 Residential mortgage backed securities 3,186 4 (2 ) 3,188 Municipal bonds 28,138 800 (58 ) 28,880 $ 44,070 $ 815 $ (100 ) $ 44,785 The amortized cost and fair values of available-for-sale securities at June 30, 2020 by contractual maturity are shown below. Actual maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Amortized Cost Fair Value (Dollars in thousands) June 30, 2020 Due after one year through five years $ — $ — Due after five years through ten years 1,000 1,011 Due after ten years 35,620 36,985 Total U.S. Government-sponsored enterprises obligations and municipal bonds $ 36,620 $ 37,996 U.S. Government agency small business pools guaranteed by SBA 2,620 2,681 Collateralized mortgage obligations issued by the FHLMC 772 787 Residential mortgage backed securities 2,684 2,759 Total $ 42,696 $ 44,223 The following is a summary of gross unrealized losses and fair value for those investments with unrealized losses, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position, at June 30, 2020 and December 31, 2019: Less than 12 Months More than 12 Months Total Number of Securities Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses (Dollars in thousands) June 30, 2020 U.S. Government sponsored enterprises obligations — $ — $ — — $ — $ — $ — $ — U.S. Government agency small business administration pools guaranteed by SBA — — — — — — — — Collateralized mortgage obligations issued by the FHLMC — — — — — — — — Residential mortgage backed securities — — — — — — — — Municipal bonds 14 4,793 (37 ) — — — 4,793 (37 ) 14 $ 4,793 $ (37 ) — $ — $ — $ 4,793 $ (37 ) December 31, 2019 U.S. Government sponsored enterprises obligations 2 $ 1,995 $ (5 ) 1 $ 1,991 $ (9 ) $ 3,986 $ (14 ) U.S. Government agency small business administration pools guaranteed by SBA 2 2,740 (20 ) — — — 2,740 (20 ) Collateralized mortgage obligations issued by the FHLMC 1 980 (6 ) — — — 980 (6 ) Residential mortgage backed securities 1 999 (2 ) — — — 999 (2 ) Municipal bonds 8 4,052 (58 ) — — — 4,052 (58 ) 14 $ 10,766 $ (91 ) 1 $ 1,991 $ (9 ) $ 12,757 $ (100 ) In evaluating whether the investments have suffered an other-than-temporary decline, management evaluated the amount of the decline compared to cost, the length of time and extent to which fair value has been less than cost, the underlying creditworthiness of the issuer, the fair values exhibited during the year and estimated future fair values. In general, management concluded the declines are due to coupon rates compared to market rates and current economic conditions. The Company does not intend to sell investments with unrealized losses, and it is more likely than not that the Company will not be required to sell these investments before recovery of their amortized cost basis. Based on evaluations of the underlying issuers’ financial condition, current trends and economic conditions, management does not believe any securities suffered an other-than-temporary decline in value as of June 30, 2020 or December 31, 2019. Proceeds from sales, maturities, and gross realized gains and losses on available-for-sale securities were as follows for the three and six months ended June 30, 2020 and 2019: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Dollars in thousands) Proceeds from sales and maturities of securities available-for-sale $ 3,690 $ 5,529 $ 19,421 $ 7,009 Gross realized gains 169 7 287 10 Gross realized losses — (9 ) (4 ) (20 ) Net realized gains (losses) $ 169 $ (2 ) $ 283 $ (10 ) As of June 30, 2020 and December 31, 2019, there were no holdings at either date that were issued by a single state or political subdivision which comprised more than 10% of the total fair value of the Company’s available-for-sale securities.

Loans

Loans	6 Months Ended
	Jun. 30, 2020
Receivables [Abstract]
Loans	4 . Loans The Bank’s lending activities are primarily conducted in and around Dover, New Hampshire and in the areas surrounding its branches. The Bank grants commercial real estate loans, multifamily 5+ dwelling unit loans, commercial and industrial loans, acquisition, development, and land loans, 1–4 family residential loans, home equity line of credit loans and consumer loans. Most loans are collateralized by real estate. The ability and willingness of real estate, commercial and construction loan borrowers to honor their repayment commitments is generally dependent on the health of the real estate sector in the borrowers’ geographic area and the general economy. On March 27, 2020, the Small Business Administration (“SBA”) established a loan program in response to the COVID-19 pandemic, the Paycheck Protection Program (“PPP”), which was added to the SBA’s 7(a) loan program by of the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”) (such loans, “PPP Loans”). The CARES Act provides that PPP Loans are fully guaranteed as to principal and interest by the SBA. As of June 30, 2020, the Bank originated 269 PPP Loans with aggregate outstanding principal balances of $32.7 million and are included in the commercial and industrial loans category (C+I). Loans consisted of the following at June 30, 2020 and December 31, 2019: June 30, 2020 December 31, 2019 (Dollars in thousands) Commercial real estate (CRE) $ 69,068 $ 70,194 Multifamily (MF) 6,425 4,888 Commercial and industrial (C+I) 53,696 24,676 Acquisition, development, and land (ADL) 23,637 18,844 1-4 family residential (RES) 217,376 213,322 Home equity line of credit (HELOC) 9,359 10,123 Consumer (CON) 1,960 1,752 Total loans 381,521 343,799 Net deferred loan (fees) costs (33 ) 1,056 Allowance for loan losses (3,153 ) (2,875 ) Total loans, net $ 378,335 $ 341,980 Changes in the allowance for loan losses (“ALL”) for the three and six months ended June 30, 2020 and 2019 by portfolio segment are summarized as follows: (Dollars in thousands) CRE MF C+I ADL RES HELOC CON Unallocated Total Balance, December 31, 2018 $ 560 $ 22 $ 232 $ 88 $ 1,593 $ 69 $ 7 $ 235 $ 2,806 Provision for loan losses 84 (1 ) (12 ) 55 (8 ) (18 ) (2 ) (98 ) — Charge-offs — — — — — — — — — Recoveries — — — — — — — — — Balance, March 31, 2019 644 21 220 143 1,585 51 5 137 2,806 Provision for loan losses 78 1 (4 ) (61 ) 143 3 3 (138 ) 25 Charge-offs — — — — — — — — — Recoveries — — — — — — 1 — 1 Balance, June 30, 2019 722 22 216 82 1,728 54 9 (1 ) 2,832 Balance, December 31, 2019 781 23 350 145 1,503 52 18 3 2,875 Provision for loan losses (4 ) 25 (63 ) (10 ) 140 27 2 (2 ) 115 Charge-offs — — — — — — — — — Recoveries 19 — — — — — — — 19 Balance, March 31, 2020 796 48 287 135 1,643 79 20 1 3,009 Provision for loan losses (56 ) 4 (11 ) 88 47 (21 ) 27 82 160 Charge-offs — — — — — — (18 ) — (18 ) Recoveries — — 2 — — — — — 2 Balance, June 30, 2020 $ 740 $ 52 $ 278 $ 223 $ 1,690 $ 58 $ 29 $ 83 $ 3,153 As of June 30, 2020 and December 31, 2019, information about loans and the ALL by portfolio segment are summarized below: (Dollars in thousands) CRE MF C+I ADL RES HELOC CON Unallocated Total June 30, 2020 Loan Balances Individually evaluated for impairment $ 229 $ — $ 1,018 $ — $ 65 $ — $ — $ — $ 1,312 Collectively evaluated for impairment 68,839 6,425 52,678 23,637 217,311 9,359 1,960 — 380,209 Total $ 69,068 $ 6,425 $ 53,696 $ 23,637 $ 217,376 $ 9,359 $ 1,960 $ — $ 381,521 ALL related to the loans Individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — Collectively evaluated for impairment 740 52 278 223 1,690 58 29 83 3,153 Total $ 740 $ 52 $ 278 $ 223 $ 1,690 $ 58 $ 29 $ 83 $ 3,153 December 31, 2019 Loan Balances Individually evaluated for impairment $ 109 $ — $ 996 $ — $ 66 $ — $ — $ — $ 1,171 Collectively evaluated for impairment 70,085 4,888 23,680 18,844 213,256 10,123 1,752 342,628 Total $ 70,194 $ 4,888 $ 24,676 $ 18,844 $ 213,322 $ 10,123 $ 1,752 $ — $ 343,799 ALL related to the loans Individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — Collectively evaluated for impairment 781 23 350 145 1,503 52 18 3 2,875 Total $ 781 $ 23 $ 350 $ 145 $ 1,503 $ 52 $ 18 $ 3 $ 2,875 The following is an aging analysis of past due loans by portfolio segment as of June 30, 2020: (Dollars in thousands) 30-59 Days 60-89 Days 90 + Days Total Past Due Current Total Loans Non-Accrual Loans CRE $ 210 $ — $ — $ 210 $ 68,858 $ 69,068 $ — MF — — — — 6,425 6,425 — C+I — — 909 909 52,787 53,696 909 ADL — — — — 23,637 23,637 — RES — 43 65 108 217,268 217,376 65 HELOC 8 — — 8 9,351 9,359 — CON — — — — 1,960 1,960 — $ 218 $ 43 $ 974 $ 1,235 $ 380,286 $ 381,521 $ 974 The following is an aging analysis of past due loans by portfolio segment as of December 31, 2019: (Dollars in thousands) 30-59 Days 60-89 Days 90 + Days Total Past Due Current Total Loans Non-Accrual Loans CRE $ — $ — $ — $ — $ 70,194 $ 70,194 $ — MF — — — — 4,888 4,888 — C+I — — 996 996 23,680 24,676 996 ADL — — — — 18,844 18,844 — RES — 19 66 85 213,237 213,322 66 HELOC — — — — 10,123 10,123 — CON — — — — 1,752 1,752 — $ — $ 19 $ 1,062 $ 1,081 $ 342,718 $ 343,799 $ 1,062 There were no loans collateralized by residential real estate property in the process of foreclosure at June 30, 2020 or December 31, 2019. The following table provides information on impaired loans as of June 30, 2020 and December 31, 2019: (Dollars in thousands) Recorded Carrying Value Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized June 30, 2020 With no related allowance recorded: CRE $ — $ — $ — $ — $ — MF — — — — — C+I 909 998 — 953 — ADL — — — — — RES 65 65 — 66 — HELOC — — — — — CON — — — — — Total impaired loans $ 974 $ 1,063 $ — $ 1,019 $ — December 31, 2019 With no related allowance recorded: CRE $ — $ — $ — $ — $ — MF — — — — — C+I 996 1,057 — 344 36 ADL — — — — — RES 66 66 — 67 — HELOC — — — — — CON — — — — — Total impaired loans $ 1,062 $ 1,123 $ — $ 411 $ 36 Credit Quality Information The Bank utilizes a ten-grade internal loan rating system for its commercial real estate, multifamily, commercial and industrial and acquisition, development and land loans. Residential real estate, home equity line of credit and consumer loans are considered “pass” rated loans until they become delinquent. Once delinquent, loans can be rated an 8, 9 or 10 as applicable. Loans rated 1 through 6: Loans in these categories are considered “pass” rated loans with low to average risk. Loans rated 7: Loans in this category are considered “special mention.” These loans are starting to show signs of potential weakness and are being closely monitored by management. Loans rated 8: Loans in this category are considered “substandard.” Generally, a loan is considered substandard if it is inadequately protected by the current net worth and paying capacity of the obligors and/or the collateral pledged. There is a distinct possibility that the Bank will sustain some loss if the weakness is not corrected. Loans rated 9: Loans in this category are considered “doubtful.” Loans classified as doubtful have all the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, highly questionable and improbable. Loans rated 10: Loans in this category are considered uncollectible (“loss”) and of such little value that their continuance as loans is not warranted and should be charged off. On an annual basis, or more often if needed, the Bank formally reviews the ratings on its commercial and industrial, commercial real estate and multifamily loans. On a periodic basis, the Bank engages an independent third party to review a significant portion of loans within these segments and to assess the credit risk management practices of its commercial lending department. Management uses the results of these reviews as part of its annual review process and overall credit risk administration. On a quarterly basis, the Bank formally reviews the ratings on its applicable residential real estate and home equity loans if they have become classified as non-accrual. Criteria used to determine ratings consist of loan-to-value ratios and days delinquent. The following presents the internal risk rating of loans by portfolio segment as of June 30, 2020: (Dollars in thousands) Pass Special Mention Substandard Total CRE $ 68,724 $ 115 $ 229 $ 69,068 MF 6,425 — — 6,425 C+I 50,877 1,801 1,018 53,696 ADL 23,637 — — 23,637 RES 217,311 — 65 217,376 HELOC 9,359 — — 9,359 CON 1,960 — — 1,960 Total $ 378,293 $ 1,916 $ 1,312 $ 381,521 The following presents the internal risk rating of loans by portfolio segment as of December 31, 2019: (Dollars in thousands) Pass Special Mention Substandard Total CRE $ 70,085 $ — $ 109 $ 70,194 MF 4,888 — — 4,888 C+I 22,208 2,166 302 24,676 ADL 18,844 — — 18,844 RES 213,256 — 66 213,322 HELOC 10,123 — — 10,123 CON 1,752 — — 1,752 Total $ 341,156 $ 2,166 $ 477 $ 343,799 In December 2019, a novel strain of coronavirus (“COVID-19”) was reported. In response to COVID-19, we have implemented a short-term loan modification program to provide temporary payment relief to certain of our borrowers who meet the program's qualifications. This program allows for a deferral or modification of payments for 90 days, which we may extend for an additional 90 days for a maximum of 180 days on a cumulative basis. The program has been offered to both retail and commercial borrowers. The majority of short-term loan modifications for retail loan borrowers consist of deferred payments (which may include principal, interest, and escrow), which are capitalized to the loan balance and recovered through the re-amortization of the monthly payment at the end of the deferral period. For commercial loan borrowers, the majority of short-term modifications consist of allowing the borrower to make interest-only payments with the deferred principal to be due at maturity or repaid as the monthly payment is re-amortized at the next interest reset date as is applicable to the individual loan structure. Alternatively, commercial loan borrowers may defer their full monthly payment similar to the retail loan program outlined above. All loans modified under these programs are maintained on full accrual status during the deferral period. As of June 30, 2020, we have provided temporary payment relief for 134 loans with aggregate outstanding principal balances of $50.3 million. As of June 30, 2020, temporary modifications consisted of 55 commercial loans with aggregate outstanding principal balances of $34.3 million and 79 residential loans with aggregate outstanding principal balances of $16.0 million. The provisions of the CARES Act included an election to not apply the guidance on accounting for troubled debt restructurings to loan modifications, such as extensions or deferrals, related to COVID-19 made between March 1, 2020 and the earlier of (i) December 31, 2020 or (ii) 60 days after the end of the COVID-19 national emergency. The relief can only be applied to modifications for borrowers that were not more than 30 days past due as of December 31, 2019. The Company elected to adopt these provisions of the CARES Act for the temporary modifications described above. Certain directors and executive officers of the Company and companies in which they have significant ownership interests are customers of the Bank. Loans outstanding to these persons and entities at June 30, 2020 and December 31, 2019 were $5.4 million and $5.2 million, respectively.

Loan Servicing

Loan Servicing	6 Months Ended
	Jun. 30, 2020
Transfers And Servicing [Abstract]
Loan Servicing	5 . Loan Servicing Loans serviced for others are not included in the accompanying consolidated balance sheets. The unpaid principal balances of such loans were $50.0 million and $49.3 million at June 30, 2020 and December 31, 2019, respectively. Substantially all of these loans were originated by the Bank and sold to third parties on a non-recourse basis with servicing rights retained. These retained servicing rights are recorded as a servicing asset and are initially recorded at fair value (see Note 12, Fair Value of Assets and Liabilities, for more information). Changes to the balance of mortgage servicing rights are recorded in loan servicing fee income (loss) in the Company’s consolidated statements of income. The Bank’s mortgage servicing activities include collecting principal, interest and escrow payments from borrowers; making tax and insurance payments on behalf of borrowers; monitoring delinquencies and executing foreclosure proceedings; and accounting for and remitting principal and interest payments to investors. Loan servicing fee income (loss), including late and ancillary fees, was $18,000 and $(20,000) for the three months ended June 30, 2020 and 2019, respectively, and $(7,000) and $(25,000) for the six months ended June 30, 2020 and 2019, respectively. The Bank’s residential mortgage investor loan servicing portfolio is primarily comprised of fixed rate loans concentrated in the Bank’s market areas. The following summarizes activity in mortgage servicing rights for the three and six months ended June 30, 2020 and 2019: (Dollars in thousands) 2020 2019 Balance, December 31, $ 397 $ 479 Additions 43 11 Payoffs (26 ) (11 ) Change in fair value due to change in assumptions (72 ) (35 ) Balance, March 31, 342 444 Additions 46 17 Payoffs (31 ) (5 ) Change in fair value due to change in assumptions (28 ) (62 ) Balance, June 30, $ 329 $ 394 Fair value at June 30, 2020 was determined using a discount rate of 9.00%, weighted average prepayment rate of 18.57%, weighted average delinquency rate of 2.47% and a weighted average default rate of 0.12%. Fair value at June 30, 2019 was determined using a discount rate of 9.50%, weighted average prepayment rate of 12.89%, weighted average delinquency rate of 2.68% and a weighted average default rate of 0.10%. Mortgage servicing rights are included in other assets on the accompanying consolidated balance sheets..

Deposits

Deposits	6 Months Ended
	Jun. 30, 2020
Deposits [Abstract]
Deposits	6 . Deposits Deposits consisted of the following at June 30, 2020 and December 31, 2019: (Dollars in thousands) June 30, 2020 December 31, 2019 NOW and demand deposits $ 148,433 $ 115,024 Money market deposits 75,677 65,611 Savings deposits 48,466 39,962 Time deposits of $250,000 and greater 12,151 13,481 Time deposits less than $250,000 45,898 47,538 $ 330,625 $ 281,616 At June 30, 2020, the scheduled maturities of time deposits were as follows: (Dollars in thousands) 2020 $ 31,034 2021 20,898 2022 4,233 2023 977 2024 450 2025 457 $ 58,049 There were no brokered deposits included in time deposits at June 30, 2020 or December 31, 2019.

Borrowings

Borrowings	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Borrowings	7 . Borrowings Federal Home Loan Bank (“FHLB” A summary of borrowings from the FHLB is as follows: June 30, 2020 Principal Amounts Maturity Dates Interest Rates (Dollars in thousands) $ 10,000 2020 0.60% to 2.15 % – fixed 2,262 2022 0.00 % – fixed 18,800 2024 0.00% to 1.69% – fixed 20,000 2025 1.35% to 1.52% – fixed 250 2028 0.00 % – fixed $ 51,312 December 31, 2019 Principal Amounts Maturity Dates Interest Rates (Dollars in thousands) $ 44,907 2020 1.77% to 2.19 % – fixed 2,262 2022 0.00% – fixed 18,800 2024 0.00% to 1.69% – fixed 250 2028 0.00% – fixed $ 66,219 All borrowings from the FHLB are secured by a blanket security agreement on qualified collateral, principally residential mortgage loans and certain U.S. government sponsored mortgage-backed securities, in an aggregate amount equal to outstanding advances. The Bank’s unused remaining available borrowing capacity at the FHLB was approximately $92.8 million and $81.7 million at June 30, 2020 and December 31, 2019, respectively. At June 30, 2020 and December 31, 2019, the Bank had sufficient collateral at the FHLB to support its obligations and was in compliance with the FHLB’s collateral pledging program. Federal Reserve Bank of Boston (“FRB” The Bank has established a Paycheck Protection Program Liquidity Facility (“PPPLF”). The PPPLF allows us to request advances from the FRB. Under the PPPLF, advances must be secured by pledges of PPP Loans. The interest rate applicable to any advance made under the PPPLF is 35 basis points. As of June 30, 2020, $25.7 million of PPPLF advances are outstanding and collateralized by 156 PPP Loans. Maturities of PPPLF advances are tied to the maturity of the underlying PPP loan and will be accelerated if the PPP loan is sold or forgiven. The Bank has an overnight line of credit with the FHLB that may be drawn up to $3.0 million. Additionally, the Bank has a total of $5.0 million of unsecured Fed Funds borrowing lines of credit with two correspondent banks. The entire balance of all these credit facilities was available at June 30, 2020.

Employee Benefits

Employee Benefits	6 Months Ended
	Jun. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Employee Benefits	8 . Employee Benefits Employee Stock Ownership Plan As part of the stock offering in 2019, the Company established the First Seacoast Bank Employee Stock Ownership Plan (“ESOP”) to provide eligible employees of the Company the opportunity to own Company stock. The ESOP is a tax-qualified retirement plan for the benefit of Company employees. Contributions are allocated to eligible participants on the basis of compensation, subject to federal limits. The number of shares committed to be released per year through 2038 is 11,924. The ESOP funded its purchase of 238,473 shares through a loan from the Company equal to 100% of the aggregate purchase price of the common stock. The ESOP trustee will repay the loan principally through the Bank’s contributions to the ESOP over the remaining loan term that matures on December 31, 2038. At June 30, 2020, the remaining principal balance on the ESOP debt was $2.3 million. Under applicable accounting requirements, the Company records compensation expense for the ESOP equal to fair market value of shares when they are committed to be released from the suspense account to participants’ accounts under the plan. Total compensation expense recognized in connection with the ESOP for the three and six months ended June 30, 2020 was $19,000 and $45,000, respectively. June 30, 2020 Shares held by the ESOP include the following: Allocated 11,924 Committed to be allocated 5,962 Unallocated 220,587 Total 238,473 The fair value of unallocated shares was approximately $1.4 million at June 30, 2020. 401(k) Plan The Company sponsors a 401(k) defined contribution plan for substantially all employees pursuant to which employees of the Company could elect to make contributions to the plan subject to Internal Revenue Service limits. The Company makes matching and profit-sharing contributions to eligible participants in accordance with plan provisions. The Company’s contributions for the three months ended June 30, 2020 and 2019 were $44,000 and $45,000, respectively, and $94,000 and $79,000 for the six months ended June 30, 2020 and 2019, respectively. Pension Plan The Company participates in the Pentegra Defined Benefit Plan for Financial Institutions (The Pentegra DB Plan), a tax-qualified defined benefit pension plan. The Pentegra DB Plan operates as a multi-employer plan for accounting purposes and as a multiple-employer plan under the Employee Retirement Income Security Act of 1974 and the Internal Revenue Code. There are no collective bargaining agreements in place that require contributions to the Pentegra DB Plan. The Pentegra DB Plan is a single plan under Internal Revenue Code Section 413 (c) and, as a result, all of the assets stand behind all of the liabilities. Accordingly, under the Pentegra DB Plan, contributions made by a participating employer may be used to provide benefits to participants of other participating employers. The funded status (fair value of plan assets divided by funding target) as of July 1, 2019 is as follows: 2019 Valuation Report 92.61 % (1) (1) Fair value of plan assets reflects any contributions received through June 30, 2019 . Based upon the funded status of the Pentegra DB Plan as of July 1, 2019, no funding improvement plan or rehabilitation plan has been implemented or is pending as of June 30, 2020. Total pension plan expense for the three months ended June 30, 2020 and 2019 was $90,000 and $86,000, respectively, and $189,000 and $173,000 for the six months ended June 30, 2020 and 2019, respectively, and is included in salaries and employee benefits expense in the accompanying consolidated statements of income. The Company did not pay a surcharge to the Pentegra DB Plan during the three or six months ended June 30, 2020. The Company enacted a “hard freeze” for the Pentegra DB Plan as of December 31, 2018, eliminating all future service-related accruals for participants. Prior to this enactment the Company maintained a “soft freeze” status that continued service-related accruals for its active participants with no new participants permitted into the Pentegra DB Plan. The Company estimates a contribution amount of approximately $378,000 for the year ending December 31, 2020. Supplemental Executive Retirement Plans Salary Continuation Plan The Company maintains a nonqualified supplemental retirement plan for its current President and its former President. The plan provides supplemental retirement benefits payable in installments over a period of years upon retirement or death. The recorded liability at June 30, 2020 and December 31, 2019 relating to this supplemental retirement plan was $566,000 and $590,000, respectively. The discount rate used to determine the Company’s obligation was 5.00%. The projected rate of salary increase for its current President was 5%. The expense of this salary retirement plan was $23,000 for the three months ended June 30, 2020 and 2019, respectively, and $50,000 and $46,000 for the six months ended June 30, 2020 and 2019, respectively. Executive Supplemental Retirement Plan The recorded liability at June 30, 2020 and December 31, 2019 relating to the supplemental retirement plan for the Bank’s former President was $171,000. The discount rate used to determine the Company’s obligation was 6.25% at June 30, 2020 and December 31, 2019. Endorsement Method Split Dollar Plan The Company has an endorsement method split dollar plan for a former President. The recorded liability at June 30, 2020 and December 31, 2019 relating to this supplemental executive benefit agreement was $33,000. The expense (benefit) of this supplemental plan was $-0- and $(7,000) for the three months ended June 30, 2020 and 2019, respectively and $-0- and $(13,000) for the six months ended June 30, 2020 and 2019, respectively. Deferred Directors Supplemental Retirement Plan The Company has a supplemental retirement plan for eligible directors that provides for monthly benefits based upon years of service to the Company, subject to certain limitations as set forth in the agreements. The present value of these future payments is being accrued over the estimated period of service. The estimated liability at June 30, 2020 and December 31, 2019 relating to this plan was $545,000 and $581,000, respectively. The discount rate used to determine the Company’s obligation was 6.25% at June 30, 2020 and December 31, 2019. Total supplemental retirement plan expense amounted to $18,000 and $19,000 for the three months ended June 30, 2020 and 2019, respectively, and $28,000 and $51,000 for the six months ended June 30, 2020 and 2019, respectively. Additionally, the Company has a deferred director’s fee plan, which allows members of the board of directors to defer the receipt of fees that otherwise would be paid to them. At June 30, 2020 and December 31, 2019, the total deferred director’s fees amounted to $275,000 and $233,000, respectively.

Other Comprehensive Income

Other Comprehensive Income	6 Months Ended
	Jun. 30, 2020
Disclosure Of Other Comprehensive Income Loss [Abstract]
Other Comprehensive Income	9 . Other Comprehensive Income The Company reports certain items as “other comprehensive income” and reflects total comprehensive income in the consolidated financial statements for all periods containing elements of other comprehensive income. The following table presents a reconciliation of the changes in the components of other comprehensive income for the dates indicated, including the amount of income tax benefit (expense) allocated to each component of other comprehensive income: Reclassification Adjustment Three Months Ended June 30, 2020 Three Months Ended June 30, 2019 Affected Line Item in Statements of Income (Dollars in thousands) (Gains) losses on securities available for sale $ (169 ) $ 2 Securities gains (losses), net Tax effect 46 — Income tax expense $ (123 ) $ 2 Net income Net amortization of premium on securities $ 102 $ 14 Interest on debt securities Tax effect (28 ) (4 ) Income tax expense $ 74 $ 10 Net income Six Months Ended June 30, 2020 Six Months Ended June 30, 2019 (Gains) losses on securities available for sale $ (283 ) $ 10 Securities gains (losses), net Tax effect 77 (2 ) Income tax expense $ (206 ) $ 8 Net income Net amortization of premium on securities $ 151 $ 40 Interest on debt securities Tax effect (41 ) (11 ) Income tax expense $ 110 $ 29 Net income The following tables present the changes in each component of AOCI for the periods indicated: (Dollars in thousands) Net Unrealized Gains (Losses) on AFS Securities (1) Net Unrealized Losses on Cash Flow Hedges (1) AOCI (1) Balance at December 31, 2018 $ (465 ) $ — $ (465 ) Other comprehensive income (loss) before reclassification 518 — 518 Amounts reclassified from AOCI 25 — 25 Other Comprehensive income (loss) 543 — 543 Balance at March 31, 2019 78 — 78 Other comprehensive income (loss) before reclassification 332 — 332 Amounts reclassified from AOCI 12 — 12 Other Comprehensive income (loss) 344 — 344 Balance at June 30, 2019 $ 422 $ — $ 422 Balance at December 31, 2019 $ 521 $ — $ 521 Other comprehensive income (loss) before reclassification 253 — 253 Amounts reclassified from AOCI (48 ) — (48 ) Other Comprehensive income (loss) 205 — 205 Balance at March 31, 2020 726 — 726 Other comprehensive income (loss) before reclassification 436 (124 ) 312 Amounts reclassified from AOCI (49 ) 5 (44 ) Other Comprehensive income (loss) 387 (119 ) 268 Balance at June 30, 2020 $ 1,113 $ (119 ) $ 994 (1) All amounts are net of tax

Regulatory Matters

Regulatory Matters	6 Months Ended
	Jun. 30, 2020
Disclosure Of Regulatory Matters [Abstract]
Regulatory Matters	10 . Regulatory Matters The Bank is subject to various regulatory capital requirements administered by the federal banking agencies. Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and ratios (set forth in the table below). Management believes that, as of June 30, 2020 and December 31, 2019, the Bank met all capital adequacy requirements to which it is subject, including the capital conservation buffer, at those dates. As fully phased in on January 1, 2019, the Basel Committee on Banking Supervision’s capital guidelines for U.S. banks (“Basel III Capital Rules”) require the Bank to maintain (i) a minimum ratio of Common Equity Tier 1 capital to risk-weighted assets of at least 4.5%, plus a 2.5% “capital conservation buffer” (effectively resulting in a minimum ratio of Common Equity Tier 1 capital to risk-weighted assets of at least 7.0%), (ii) a minimum ratio of Tier 1 capital to risk-weighted assets of at least 6.0%, plus the capital conservation buffer (effectively resulting in a minimum Tier 1 capital ratio of 8.5%), (iii) a minimum ratio of Total capital (that is, Tier 1 plus Tier 2) to risk-weighted assets of at least 8.0%, plus the capital conservation buffer (effectively resulting in a minimum total capital ratio of 10.5%) and (iv) a minimum leverage ratio of 4.0%, calculated as the ratio of Tier 1 capital to average quarterly assets. The capital conservation buffer is designed to absorb losses during periods of economic stress and effectively increases the minimum required risk-weighted capital ratios. Banking institutions with a ratio of Common Equity Tier 1 capital to risk-weighted assets below the effective minimum will face constraints on dividends, equity repurchases and compensation based on the amount of the shortfall. The following table presents actual and required capital ratios as of June 30, 2020 and December 31, 2019 for the Bank under the Basel III Capital Rules. The minimum required capital amounts presented include the minimum required capital levels as of June 30, 2020 and December 31, 2019 based on the phase-in provisions of the Basel III Capital Rules and the minimum required capital levels as of January 1, 2019, when the Basel III Capital Rules were fully phased-in. Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Minimum Capital Minimum Capital Required For Capital Adequacy Plus Capital Conservation Buffer Actual Requirement Fully Phased-In (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio As of June 30, 2020 Total Capital (to risk- weighted assets) $ 50,295 17.26 % $ 23,313 8.00 % $ 30,599 10.50 % Tier I Capital (to risk- weighted assets) 47,100 16.16 17,485 6.00 24,770 8.50 Tier I Capital (to average assets) 47,100 10.62 17,742 4.00 17,742 4.00 Common Equity Tier 1 (to risk-weighted assets) 47,100 16.16 13,114 4.50 20,399 7.00 Minimum Capital Minimum To Be Well Capitalized Under Prompt Corrective Actual Requirement Action Provisions (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio December 31, 2019 Total Capital (to risk-weighted assets) $ 49,259 18.52 % $ 21,278 8.00 % $ 27,928 10.50 % Tier I Capital (to risk-weighted assets) 46,321 17.41 15,961 6.00 22,611 8.50 Tier I Capital (to average assets) 46,321 11.41 16,236 4.00 16,236 4.00 Common Equity Tier 1 (to risk-weighted assets) 46,321 17.41 11,971 4.50 18,621 7.00

Derivatives and Hedging Activit

Derivatives and Hedging Activities	6 Months Ended
	Jun. 30, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	1 1 . Derivatives and Hedging Activities Derivatives are recognized as either assets or liabilities on the balance sheet and are measured at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative and resulting designation. The Company utilizes interest rate swap agreements as part of its asset liability management strategy. Interest rate swaps involve the exchange of interest payments at specified intervals between two parties without the exchange of any underlying principal. These derivative instruments are designated as cash flow hedges with the effective portion of changes in the fair value of the derivative recorded in accumulated other comprehensive income and recognized in earnings when the hedged transaction affects earnings. The ineffective portion of changes in the fair value of the cash flow hedge is recognized directly in earnings. During the three months ended June 30, 2020, the Company entered into two $5 million notional interest rate swaps that have been designated as cash flow hedges on 90-day advances from FHLB. One agreement is currently active and the other is a forward swap with a start date of April 13, 2021. The purpose of these cash flow hedges is to reduce potential interest rate risk by swapping a variable rate borrowing to a fixed rate. Management deemed it prudent to limit the variability of these interest payments by entering into these interest rate swap agreements. These agreements provide for the Company to receive payments at a variable rate determined by a specific index (three-month LIBOR) in exchange for making payments at a fixed rate. Publication of LIBOR is expected to cease at the end of 2021. The swap agreements allow for substitution of an alternative reference rate such as the secured overnight financing rate (“SOFR”) at that time. The effective portion of changes in the fair value of interest rate swaps are reported in other comprehensive income a nd are subsequently reclassified into earnings in the period that the hedged transactions affect earnings The following table summarizes the Company’s derivatives associated with its interest rate risk management activities: June 30, 2020 (Dollars in thousands) Start Date Maturity Date Rate Notional Assets Liabilities Debt Hedging Hedging Instruments: Interest Rate Swap 2020 4/13/2020 4/13/2025 0.68% $ 5,000 $ — $ 80 Interest Rate Swap 2021 4/13/2021 4/13/2026 0.74% $ 5,000 $ — $ 84 Total Hedging Instruments $ 10,000 $ — $ 164 Hedged Items: Variability in cash flows related to 90-day FHLB advances N/A $ — $ 5,000 The credit risk associated with these interest rate swaps is the risk of default by the counterparty. To minimize this risk, the Company only enters into interest rate swaps agreements with highly rated counterparties that management believes to be creditworthy. The notional amounts of these agreements do not represent amounts exchanged by the parties and, thus, are not a measure of the potential loss exposure. Risk management results for the three months ended June 30, 2020, related to the balance sheet hedging of $5.0 million of 90 day FHLB advances, included in borrowings, indicate that the hedge was 100% effective and there was no component of the derivative instruments’ unrealized loss which was excluded from the assessment of hedge effectiveness. The Company’s arrangement with its counterparty requires it to post cash or other assets as collateral for its interest rate swap contracts in a net liability position based on their aggregate fair value and the Company’s credit rating. At June 30, 2020, the Company posted $525,000 of cash to the counterparty as collateral on its interest rate swap contracts which was presented within cash and due from banks on the consolidated balance sheets.

Fair Values of Assets and Liabi

Fair Values of Assets and Liabilities	6 Months Ended
	Jun. 30, 2020
Disclosure Of Fair Values Of Assets And Liabilities [Abstract]
Fair Values of Assets and Liabilities	1 2 . Fair Values of Assets and Liabilities Determination of Fair Value The fair value of an asset or liability is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The Company uses prices and inputs that are current as of the measurement date, including during periods of market dislocation. In periods of market dislocation, the observability of prices and inputs may be reduced for many instruments. This condition could cause an instrument to be reclassified from one level to another. Fair value is best determined based upon quoted market prices. However, in many instances, there are no quoted market prices for the Company’s various assets and liabilities. In cases where quoted market prices are not available, fair values are based on estimates using present value of cash flows or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. Accordingly, the fair value estimates may not be realized in an immediate settlement of the instrument. The Company groups its assets and liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the observability and reliability of the assumptions used to determine fair value. Level 1 - Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 - Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Level 3 - Level 3 inputs are unobservable inputs for the asset or liability. For assets and liabilities, fair value is based upon the lowest level of observable input that is significant to the fair value measurement. In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon models that primarily use, as inputs, observable market-based parameters. The Company’s valuation methodologies may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Furthermore, the reported fair value amounts have not been comprehensively revalued since the presentation dates, and therefore, estimates of fair value after the balance sheet date may differ significantly from the amounts presented therein. A more detailed description of the valuation methodologies used for assets and liabilities measured at fair value is set forth below. A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. These valuation methodologies were applied to all the Company’s financial assets and financial liabilities carried at fair value at June 30, 2020 and December 31, 2019. There were no significant transfers between levels of the fair value hierarchy during the three or six months ended June 30, 2020 and 2019. Financial Assets and Financial Liabilities: Financial assets and financial liabilities measured at fair value on a recurring basis include the following: Securities Available-for-Sale : The Company’s investment in U.S. Government-sponsored entities bonds, U.S Government agency small business administration pools guaranteed by the SBA, collateralized mortgage obligations issued by the FHLMC, residential mortgage-backed securities and other municipal bonds is generally classified within Level 2 of the fair value hierarchy. For these securities, the Company obtains fair value measurements from independent pricing services. The fair value measurements consider observable data that may include reported trades, dealer quotes, market spreads, cash flows, the U.S. treasury yield curve, trading levels, market consensus prepayment speeds, credit information and the instrument’s terms and conditions. Mortgage Servicing Rights : Fair value is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model utilizes interest rate, prepayment speed and default rate assumptions that market participants would use in estimating future net servicing income and that can be validated against available market data (see Note 5, Loan Servicing for more information). These assumptions are inherently sensitive to change as these unobservable inputs are not based on quoted prices in active markets or otherwise observable. Derivative Instruments and Hedges: The valuation of these instruments is determined using the discounted cash flow method on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and implied volatilities. The following table summarizes financial assets and liabilities measured at fair value on a recurring basis as of June 30, 2020 and December 31, 2019, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Total Level 1 Level 2 Level 3 (Dollars in thousands) June 30, 2020 Securities available-for-sale: U.S. Government-sponsored enterprises obligations $ 1,011 $ — $ 1,011 $ — U.S Government agency small business administration pools guaranteed by the SBA 2,681 — 2,681 — Collateralized mortgage obligations issued by the FHLMC 787 — 787 — Mortgage-backed securities 2,759 — 2,759 — Municipal bonds 36,985 — 36,985 — Other assets: Mortgage servicing rights 329 — — 329 Other liabilities: Derivatives 164 — 164 — Total Level 1 Level 2 Level 3 (Dollars in thousands) December 31, 2019 Securities available-for-sale: U.S. Government-sponsored enterprises obligations $ 8,997 $ — $ 8,997 $ — U.S Government agency small business administration pools guaranteed by the SBA 2,740 — 2,740 — Collateralized mortgage obligations issued by the FHLMC 980 — 980 — Mortgage-backed securities 3,188 — 3,188 — Municipal bonds 28,880 — 28,880 — Other assets: Mortgage servicing rights 397 — — 397 For the six months ended June 30, 2020 and 2019, the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: (Dollars in thousands) Mortgage Servicing Rights (1) Balance as of January 1, 2020 $ 397 Included in net income (68 ) Balance as of June 30, 2020 $ 329 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2020 $ — Balance as of January 1, 2019 $ 479 Included in net income (85 ) Balance as of June 30, 2019 $ 394 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2019 $ — (1) Realized and unrealized gains and losses related to mortgage servicing rights are reported as a component of mortgage banking income in the Company’s consolidated statements of income. For Level 3 assets measured at fair value on a recurring basis as of June 30, 2020 and December 31, 2019, the significant unobservable inputs used in the fair value measurements were as follows: June 30, 2020 December 31, 2019 (Dollars in thousands) Valuation Technique Description Range Weighted Average (1) Fair Value Weighted Average (1) Fair Value Mortgage Servicing Rights Discounted Cash Flow Prepayment Rate 9.88% - 29.13% 18.57% $ 329 13.08% $ 397 Discount Rate 9.00% - 9.00% 9.00% 9.50% Delinquency Rate 2.33% - 2.90% 2.47% 2.48% Default Rate 0.08% - 0.14% 0.12% 0.09% (1) Unobservable inputs for mortgage servicing rights were weighted by loan amount. The significant unobservable inputs used in the fair value measurement of the Company’s mortgage servicing rights are the weighted-average prepayment rate, weighted-average discount rate, weighted average delinquency rate and weighted-average default rate. Significant increases (decreases) in any of those inputs in isolation could result in a significantly lower (higher) fair value measurement. Although the prepayment rate and the discount rate are not directly interrelated, they generally move in opposite directions of each other. The Company estimates the fair value of mortgage servicing rights by using a discounted cash flow model to calculate the present value of estimated future net servicing income. Observable and unobservable inputs are entered into this model as prescribed by an independent third party to arrive at an estimated fair value. See Note 5, Loan Servicing, for a rollforward of our Level 3 item and related inputs and assumptions used to determine fair value at June 30, 2020. Certain financial assets and financial liabilities are measured at fair value on a non-recurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). Financial assets measured at fair value on a non-recurring basis during the reported periods may include certain impaired loans reported at the fair value of the underlying collateral. Fair value is measured using appraised values of collateral and adjusted as necessary by management based on unobservable inputs for specific properties. However, the choice of observable data is subject to significant judgment, and there are often adjustments based on judgment in order to make observable data comparable and to consider the impact of time, the condition of properties, interest rates and other market factors on current values. Additionally, commercial real estate appraisals frequently involve discounting of projected cash flows, which relies inherently on unobservable data. Therefore, real estate collateral related nonrecurring fair value measurement adjustments have generally been classified as Level 3. Estimates of fair value used for other collateral supporting commercial loans generally are based on assumptions not observable in the marketplace and therefore such valuations have been classified as Level 3. Financial assets measured at fair value on a non-recurring basis during the reported periods also include loans held for sale. Residential mortgage loans held for sale are recorded at the lower of cost or fair value and are therefore measured at fair value on a non-recurring basis. The fair values for loans held for sale are estimated based on commitments in effect from investors or prevailing market prices for loans with similar terms to borrowers of similar credit quality and are included in Level 3. At June 30, 2020, the Company’s only asset measured at fair value on a nonrecurring basis is a loan identified as impaired for which a partial write-off has been recorded. This impaired loan is reported at the fair value of the underlying collateral, less estimated selling costs. The Company classifies impaired loans as Level 3 in the fair value hierarchy. Collateral values are estimated using Level 2 inputs based upon appraisals of similar properties obtained from a third party, but can be adjusted, and therefore classified as Level 3. The following summarizes assets measured at fair value on a nonrecurring basis at June 30, 2020 and December 31, 2019: Fair Value Measurements at Reporting Date Using: (Dollars in thousands) Total Quoted Prices in Active Markets for Identical Assets Level 1 Significant Other Observable Inputs Level 2 Significant Unobservable Inputs Level 3 June 30, 2020 Impaired Loans $ 909 $ — $ — $ 909 December 31, 2019 Impaired Loans $ 996 $ — $ — $ 996 The following is a summary of the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis at June 30, 2020 and December 31, 2019: (Dollars in thousands) Fair Value Valuation Technique Unobservable Input June 30, 2020 Impaired Loans $ 909 Market Approach Appraisal of Collateral Selling Costs Provision December 31, 2019 Impaired Loans $ 996 Market Approach Appraisal of Collateral Selling Costs Provision Non-Financial Assets and Non-Financial Liabilities: The Company has no non-financial assets or non-financial liabilities measured at fair value on a recurring basis. Non-financial assets measured at fair value on a non-recurring basis generally include certain foreclosed assets which, upon initial recognition, were remeasured and reported at fair value through a charge-off to the allowance for loan losses and certain foreclosed assets which, subsequent to their initial recognition, are remeasured at fair value through a write-down included in other non-interest expense. There were no foreclosed assets at June 30, 2020 or December 31, 2019. ASC Topic 825, “Financial Instruments,” Summary of Fair Values of Financial Instruments not Carried at Fair Value The estimated fair values, and related carrying or notional amounts, of the Company’s financial instruments at June 30, 2020 and December 31, 2019 are as follows: (Dollars in thousands) Carrying Amount Fair Value Level 1 Level 2 Level 3 June 30, 2020 Financial Assets: Cash and due from banks $ 30,625 $ 30,625 $ 30,625 $ — $ — Interest-bearing time deposits with other banks 2,488 2,488 — 2,488 — Federal Home Loan Bank stock 2,776 2,776 — 2,776 — Bank-owned life insurance 4,292 4,292 — 4,292 — Loans, net 378,335 377,325 — — 377,325 Accrued interest receivable 1,360 1,360 1,360 — — Financial Liabilities: Deposits $ 330,625 $ 331,080 $ 272,576 $ 58,504 $ — Advances from Federal Home Loan Bank 51,312 52,897 — 52,897 — Advances from Federal Reserve Bank 25,713 25,713 25,713 Mortgagors’ tax escrow 706 706 — 706 — December 31, 2019 Financial Assets: Cash and due from banks $ 4,009 $ 4,009 $ 4,009 $ — $ — Interest-bearing time deposits with other banks 2,735 2,735 — 2,735 — Federal Home Loan Bank stock 2,971 2,971 — 2,971 — Bank-owned life insurance 4,267 4,267 — 4,267 — Loans, net 341,980 336,847 — — 336,847 Accrued interest receivable 1,235 1,235 1,235 — — Financial Liabilities: Deposits $ 281,616 $ 281,707 $ 220,596 $ 61,111 $ — Advances from Federal Home Loan Bank 66,219 66,060 — 66,060 — Mortgagors’ tax escrow 586 586 — 586 —

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statements of First Seacoast Bancorp (the “Company”) were prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim consolidated financial information, general practices within the banking industry and with instructions for Form 10-Q and Regulation S-X. Accordingly, these interim financial statements do not include all the information or footnotes required by GAAP for annual financial statements. However, in the opinion of management, all adjustments (consisting solely of normal recurring adjustments) necessary for a fair presentation of these consolidated financial statements have been included. The results of operations for the interim periods disclosed herein are not necessarily indicative of the results which may be expected for the entire year. These statements should be read in conjunction with the audited consolidated financial statements and notes thereto contained in the Annual Report on Form 10-K for the fiscal year ended December 31, 2019, as filed with the U.S. Securities and Exchange Commission (“SEC”) on March 27, 2020. The accompanying consolidated financial statements include the accounts of the Company, its wholly owned subsidiary, First Seacoast Bank (the “Bank”), and the Bank’s wholly owned subsidiary, FSB Service Corporation, Inc. All significant intercompany balances and transactions have been eliminated in consolidation.
Corporate Structure	Corporate Structure The Company is the holding company for the Bank (formerly named Federal Savings Bank). Effective July 16, 2019, pursuant to a Plan of Reorganization from Mutual Savings Bank to Mutual Holding Company and Stock Issuance Plan (the “Plan of Reorganization”), the Bank reorganized into the mutual holding company structure and the Company completed a concurrent stock offering (collectively, the “Reorganization”). In the stock offering, the Company sold a total of 2,676,740 shares of common stock, which included 238,473 shares sold to the First Seacoast Bank Employee Stock Ownership Plan (the “ESOP”), at a price of $10.00 per share. In addition, as part of the Reorganization, the Company issued 3,345,925 shares of common stock to First Seacoast Bancorp, MHC (the “MHC”), the Bank’s parent mutual holding company, and 60,835 shares of common stock and $150,000 in cash to First Seacoast Community Foundation, Inc. (the “Foundation”), a charitable foundation formed in connection with the reorganization and dedicated to supporting charitable organizations operating in the Bank’s local community. The Company’s common stock began trading on the NASDAQ Capital Market under the symbol “FSEA” on July 17, 2019. Pursuant to the Plan of Reorganization, the Bank adopted an employee stock ownership plan (“ESOP”), which purchased 238,473 shares of common stock in the stock offering with the proceeds of a loan from the Company. As a result of the Reorganization, a total of 6,083,500 shares of common stock of the Company are issued and outstanding, of which 55% are issued to the MHC, 44% were sold to the Bank’s eligible members, the ESOP, and certain other persons in the stock offering, and 1% were contributed to the Foundation. Expenses incurred related to the offering were $1.6 million and were deducted from the stock offering proceeds. The Bank focuses on four core services that center around customer needs. The core services include residential lending, commercial banking, personal banking, and wealth management. The Bank offers a full range of commercial and consumer banking services through its network of five full-service branch locations. Banking services, the Company’s only reportable operating segment, is managed as a single strategic unit. The Bank is engaged principally in the business of attracting deposits from the public and investing those deposits. The Bank invests those funds in various types of loans, including residential and commercial real estate and a variety of commercial and consumer loans. The Bank also invests its deposits and borrowed funds in investment securities. Deposits at the Bank are insured by the Federal Deposit and Insurance Corporation (“FDIC”) for the maximum amount permitted by FDIC regulations. Investment management services are offered at the Company’s full-service wealth management office in Dover, New Hampshire. The assets held for wealth management customers are not assets of the Company and, accordingly, are not reflected in the accompanying balance sheets. Assets under management totaled approximately $49.6 million and $49.3 million at June 30, 2020 and December 31, 2019, respectively. Our wealth management group, FSB Wealth Management, assists individuals and families in building and preserving their wealth by providing investment services. The investment management group manages portfolios utilizing a variety of investment products. This group also provides a full-service brokerage offering equities, mutual funds, life insurance and annuity products.
Recently Adopted Accounting Standards	Recently Adopted Accounting Standards As an “emerging growth company,” as defined in Title 1 of Jumpstart Our Business Startups (JOBS) Act, the Company has elected to use the extended transition period to delay adoption of new or reissued accounting pronouncements applicable to public companies until such pronouncements are made applicable to private companies. As a result, the Company’s consolidated financial statements may not be comparable to the financial statements of public companies that comply with such new or revised accounting standards without an extended transition period. As of June 30, 2020, there is no significant difference in the comparability of the Company’s consolidated financial statements as a result of this extended transition period except for the accounting treatment for measuring and recording the Company’s allowance for loan losses. The Company measures and records an allowance for loan losses based upon the incurred loss model while other public companies may be required to calculate their allowance for loan losses based upon the current expected credit loss (“CECL”) model. 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
Recent Accounting Pronouncements	Recent Accounting Pronouncements In June 2020, the FASB issued ASU No. 2020-05, “ Revenue from Contracts with Customers (Topic 606) and Leases (Topic 842): Effective Dates for Certain Entities,” Revenue from Contracts with Customers (Topic 606),” Leases (Topic 842),” Revenue from Contracts with Customers (Topic 606),” Leases (Topic 842),” In March 2020, the FASB issued ASU No. 2020-04, “ Reference Rate Reform (Topic 848), In February 2020, the FASB issued ASU 2020-2, “Financial Instruments – Credit Losses (Topic 326) and Leases (Topic 842) - Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 119 and Update to SEC Section on Effective Date Related to Accounting Standards Update No. 2016-02, Leases (Topic 842).” In January 2020, the FASB issued ASU 2020-1, “Investments – Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) – Clarifying the Interactions Between Topic 321, Topic 323, and T 815 (A Consensus of the Emerging Issues Task Force),” In December 2019, the FASB issued ASU 2019-12, “ Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” In November 2019, the FASB issued ASU 2019-11, “ Codification Improvements to Topic 326, Financial Instruments – Credit Losses,” Financial Instruments – Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842): Effective Dates “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,” Leases (Topic 842)” Targeted Improvements to Accounting for Hedging Activities,” In February 2016, the FASB issued ASU 2016-02, “ Leases (Topic 842).” Codification Improvements to Topic 842, Leases,” Leases (Topic 842) – Targeted Improvements,” In June 2016, the FASB issued ASU 2016-13, “ Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments Codification Improvements to Topic 326, Financial Instruments-Credit Losses Codification Improvements to Topic 326, Financial Instruments—Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments Financial Instruments—Credit Losses, Topic 326 In August 2018, the FASB issued ASU 2018-14, “Compensation—Retirement Benefits – Defined Benefit Plans – General (Subtopic 715-20).”

Securities Available-for-Sale (

Securities Available-for-Sale (Tables)	6 Months Ended
	Jun. 30, 2020
Available For Sale Securities [Abstract]
Schedule of amortized cost and fair value of securities available-for-sale	The amortized cost and fair value of securities available-for-sale, and the corresponding amounts of gross unrealized gains and losses, are as follows as of June 30, 2020 and December 31, 2019: June 30, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in thousands) U.S. Government-sponsored enterprises obligations $ 1,000 $ 11 $ — $ 1,011 U.S. Government agency small business administration pools guaranteed by SBA 2,620 61 — 2,681 Collateralized mortgage obligations issued by the FHLMC 772 15 — 787 Residential mortgage backed securities 2,684 75 — 2,759 Municipal bonds 35,620 1,402 (37 ) 36,985 $ 42,696 $ 1,564 $ (37 ) $ 44,223 December 31, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in thousands) U.S. Government-sponsored enterprises obligations $ 9,000 $ 11 $ (14 ) $ 8,997 U.S. Government agency small business administration pools guaranteed by SBA 2,760 — (20 ) 2,740 Collateralized mortgage obligations issued by the FHLMC 986 — (6 ) 980 Residential mortgage backed securities 3,186 4 (2 ) 3,188 Municipal bonds 28,138 800 (58 ) 28,880 $ 44,070 $ 815 $ (100 ) $ 44,785
Schedule of amortized cost and fair values of available-for-sale securities by contractual maturity	The amortized cost and fair values of available-for-sale securities at June 30, 2020 by contractual maturity are shown below. Actual maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Amortized Cost Fair Value (Dollars in thousands) June 30, 2020 Due after one year through five years $ — $ — Due after five years through ten years 1,000 1,011 Due after ten years 35,620 36,985 Total U.S. Government-sponsored enterprises obligations and municipal bonds $ 36,620 $ 37,996 U.S. Government agency small business pools guaranteed by SBA 2,620 2,681 Collateralized mortgage obligations issued by the FHLMC 772 787 Residential mortgage backed securities 2,684 2,759 Total $ 42,696 $ 44,223
Summary of gross unrealized losses and fair value for those investments with unrealized losses	The following is a summary of gross unrealized losses and fair value for those investments with unrealized losses, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position, at June 30, 2020 and December 31, 2019: Less than 12 Months More than 12 Months Total Number of Securities Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses (Dollars in thousands) June 30, 2020 U.S. Government sponsored enterprises obligations — $ — $ — — $ — $ — $ — $ — U.S. Government agency small business administration pools guaranteed by SBA — — — — — — — — Collateralized mortgage obligations issued by the FHLMC — — — — — — — — Residential mortgage backed securities — — — — — — — — Municipal bonds 14 4,793 (37 ) — — — 4,793 (37 ) 14 $ 4,793 $ (37 ) — $ — $ — $ 4,793 $ (37 ) December 31, 2019 U.S. Government sponsored enterprises obligations 2 $ 1,995 $ (5 ) 1 $ 1,991 $ (9 ) $ 3,986 $ (14 ) U.S. Government agency small business administration pools guaranteed by SBA 2 2,740 (20 ) — — — 2,740 (20 ) Collateralized mortgage obligations issued by the FHLMC 1 980 (6 ) — — — 980 (6 ) Residential mortgage backed securities 1 999 (2 ) — — — 999 (2 ) Municipal bonds 8 4,052 (58 ) — — — 4,052 (58 ) 14 $ 10,766 $ (91 ) 1 $ 1,991 $ (9 ) $ 12,757 $ (100 )
Summary of sales proceeds and gross realized gains and losses on available for sale securities	Proceeds from sales, maturities, and gross realized gains and losses on available-for-sale securities were as follows for the three and six months ended June 30, 2020 and 2019: Three Months Ended June 30, Six Months Ended June 30, 2020 2019 2020 2019 (Dollars in thousands) Proceeds from sales and maturities of securities available-for-sale $ 3,690 $ 5,529 $ 19,421 $ 7,009 Gross realized gains 169 7 287 10 Gross realized losses — (9 ) (4 ) (20 ) Net realized gains (losses) $ 169 $ (2 ) $ 283 $ (10 )

Loans (Tables)

Loans (Tables)	6 Months Ended
	Jun. 30, 2020
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	Loans consisted of the following at June 30, 2020 and December 31, 2019: June 30, 2020 December 31, 2019 (Dollars in thousands) Commercial real estate (CRE) $ 69,068 $ 70,194 Multifamily (MF) 6,425 4,888 Commercial and industrial (C+I) 53,696 24,676 Acquisition, development, and land (ADL) 23,637 18,844 1-4 family residential (RES) 217,376 213,322 Home equity line of credit (HELOC) 9,359 10,123 Consumer (CON) 1,960 1,752 Total loans 381,521 343,799 Net deferred loan (fees) costs (33 ) 1,056 Allowance for loan losses (3,153 ) (2,875 ) Total loans, net $ 378,335 $ 341,980
Schedule Of Allowance For Loans And Leases Receivable Classification	Changes in the allowance for loan losses (“ALL”) for the three and six months ended June 30, 2020 and 2019 by portfolio segment are summarized as follows: (Dollars in thousands) CRE MF C+I ADL RES HELOC CON Unallocated Total Balance, December 31, 2018 $ 560 $ 22 $ 232 $ 88 $ 1,593 $ 69 $ 7 $ 235 $ 2,806 Provision for loan losses 84 (1 ) (12 ) 55 (8 ) (18 ) (2 ) (98 ) — Charge-offs — — — — — — — — — Recoveries — — — — — — — — — Balance, March 31, 2019 644 21 220 143 1,585 51 5 137 2,806 Provision for loan losses 78 1 (4 ) (61 ) 143 3 3 (138 ) 25 Charge-offs — — — — — — — — — Recoveries — — — — — — 1 — 1 Balance, June 30, 2019 722 22 216 82 1,728 54 9 (1 ) 2,832 Balance, December 31, 2019 781 23 350 145 1,503 52 18 3 2,875 Provision for loan losses (4 ) 25 (63 ) (10 ) 140 27 2 (2 ) 115 Charge-offs — — — — — — — — — Recoveries 19 — — — — — — — 19 Balance, March 31, 2020 796 48 287 135 1,643 79 20 1 3,009 Provision for loan losses (56 ) 4 (11 ) 88 47 (21 ) 27 82 160 Charge-offs — — — — — — (18 ) — (18 ) Recoveries — — 2 — — — — — 2 Balance, June 30, 2020 $ 740 $ 52 $ 278 $ 223 $ 1,690 $ 58 $ 29 $ 83 $ 3,153 As of June 30, 2020 and December 31, 2019, information about loans and the ALL by portfolio segment are summarized below: (Dollars in thousands) CRE MF C+I ADL RES HELOC CON Unallocated Total June 30, 2020 Loan Balances Individually evaluated for impairment $ 229 $ — $ 1,018 $ — $ 65 $ — $ — $ — $ 1,312 Collectively evaluated for impairment 68,839 6,425 52,678 23,637 217,311 9,359 1,960 — 380,209 Total $ 69,068 $ 6,425 $ 53,696 $ 23,637 $ 217,376 $ 9,359 $ 1,960 $ — $ 381,521 ALL related to the loans Individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — Collectively evaluated for impairment 740 52 278 223 1,690 58 29 83 3,153 Total $ 740 $ 52 $ 278 $ 223 $ 1,690 $ 58 $ 29 $ 83 $ 3,153 December 31, 2019 Loan Balances Individually evaluated for impairment $ 109 $ — $ 996 $ — $ 66 $ — $ — $ — $ 1,171 Collectively evaluated for impairment 70,085 4,888 23,680 18,844 213,256 10,123 1,752 342,628 Total $ 70,194 $ 4,888 $ 24,676 $ 18,844 $ 213,322 $ 10,123 $ 1,752 $ — $ 343,799 ALL related to the loans Individually evaluated for impairment $ — $ — $ — $ — $ — $ — $ — $ — $ — Collectively evaluated for impairment 781 23 350 145 1,503 52 18 3 2,875 Total $ 781 $ 23 $ 350 $ 145 $ 1,503 $ 52 $ 18 $ 3 $ 2,875
Past Due Financing Receivables	The following is an aging analysis of past due loans by portfolio segment as of June 30, 2020: (Dollars in thousands) 30-59 Days 60-89 Days 90 + Days Total Past Due Current Total Loans Non-Accrual Loans CRE $ 210 $ — $ — $ 210 $ 68,858 $ 69,068 $ — MF — — — — 6,425 6,425 — C+I — — 909 909 52,787 53,696 909 ADL — — — — 23,637 23,637 — RES — 43 65 108 217,268 217,376 65 HELOC 8 — — 8 9,351 9,359 — CON — — — — 1,960 1,960 — $ 218 $ 43 $ 974 $ 1,235 $ 380,286 $ 381,521 $ 974 The following is an aging analysis of past due loans by portfolio segment as of December 31, 2019: (Dollars in thousands) 30-59 Days 60-89 Days 90 + Days Total Past Due Current Total Loans Non-Accrual Loans CRE $ — $ — $ — $ — $ 70,194 $ 70,194 $ — MF — — — — 4,888 4,888 — C+I — — 996 996 23,680 24,676 996 ADL — — — — 18,844 18,844 — RES — 19 66 85 213,237 213,322 66 HELOC — — — — 10,123 10,123 — CON — — — — 1,752 1,752 — $ — $ 19 $ 1,062 $ 1,081 $ 342,718 $ 343,799 $ 1,062
Impaired Financing Receivables	The following table provides information on impaired loans as of June 30, 2020 and December 31, 2019: (Dollars in thousands) Recorded Carrying Value Unpaid Principal Balance Related Allowance Average Recorded Investment Interest Income Recognized June 30, 2020 With no related allowance recorded: CRE $ — $ — $ — $ — $ — MF — — — — — C+I 909 998 — 953 — ADL — — — — — RES 65 65 — 66 — HELOC — — — — — CON — — — — — Total impaired loans $ 974 $ 1,063 $ — $ 1,019 $ — December 31, 2019 With no related allowance recorded: CRE $ — $ — $ — $ — $ — MF — — — — — C+I 996 1,057 — 344 36 ADL — — — — — RES 66 66 — 67 — HELOC — — — — — CON — — — — — Total impaired loans $ 1,062 $ 1,123 $ — $ 411 $ 36
Financing Receivable Credit Quality Indicators	The following presents the internal risk rating of loans by portfolio segment as of June 30, 2020: (Dollars in thousands) Pass Special Mention Substandard Total CRE $ 68,724 $ 115 $ 229 $ 69,068 MF 6,425 — — 6,425 C+I 50,877 1,801 1,018 53,696 ADL 23,637 — — 23,637 RES 217,311 — 65 217,376 HELOC 9,359 — — 9,359 CON 1,960 — — 1,960 Total $ 378,293 $ 1,916 $ 1,312 $ 381,521 The following presents the internal risk rating of loans by portfolio segment as of December 31, 2019: (Dollars in thousands) Pass Special Mention Substandard Total CRE $ 70,085 $ — $ 109 $ 70,194 MF 4,888 — — 4,888 C+I 22,208 2,166 302 24,676 ADL 18,844 — — 18,844 RES 213,256 — 66 213,322 HELOC 10,123 — — 10,123 CON 1,752 — — 1,752 Total $ 341,156 $ 2,166 $ 477 $ 343,799

Loan Servicing (Tables)

Loan Servicing (Tables)	6 Months Ended
	Jun. 30, 2020
Transfers And Servicing [Abstract]
Schedule of Servicing Assets at Fair Value	The following summarizes activity in mortgage servicing rights for the three and six months ended June 30, 2020 and 2019: (Dollars in thousands) 2020 2019 Balance, December 31, $ 397 $ 479 Additions 43 11 Payoffs (26 ) (11 ) Change in fair value due to change in assumptions (72 ) (35 ) Balance, March 31, 342 444 Additions 46 17 Payoffs (31 ) (5 ) Change in fair value due to change in assumptions (28 ) (62 ) Balance, June 30, $ 329 $ 394

Deposits (Tables)

Deposits (Tables)	6 Months Ended
	Jun. 30, 2020
Deposits [Abstract]
Deposit Liabilities	Deposits consisted of the following at June 30, 2020 and December 31, 2019: (Dollars in thousands) June 30, 2020 December 31, 2019 NOW and demand deposits $ 148,433 $ 115,024 Money market deposits 75,677 65,611 Savings deposits 48,466 39,962 Time deposits of $250,000 and greater 12,151 13,481 Time deposits less than $250,000 45,898 47,538 $ 330,625 $ 281,616
Maturities of Time Deposits	At June 30, 2020, the scheduled maturities of time deposits were as follows: (Dollars in thousands) 2020 $ 31,034 2021 20,898 2022 4,233 2023 977 2024 450 2025 457 $ 58,049

Borrowings (Tables)

Borrowings (Tables)	6 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank	A summary of borrowings from the FHLB is as follows: June 30, 2020 Principal Amounts Maturity Dates Interest Rates (Dollars in thousands) $ 10,000 2020 0.60% to 2.15 % – fixed 2,262 2022 0.00 % – fixed 18,800 2024 0.00% to 1.69% – fixed 20,000 2025 1.35% to 1.52% – fixed 250 2028 0.00 % – fixed $ 51,312 December 31, 2019 Principal Amounts Maturity Dates Interest Rates (Dollars in thousands) $ 44,907 2020 1.77% to 2.19 % – fixed 2,262 2022 0.00% – fixed 18,800 2024 0.00% to 1.69% – fixed 250 2028 0.00% – fixed $ 66,219

Employee Benefits (Tables)

Employee Benefits (Tables)	6 Months Ended
	Jun. 30, 2020
Compensation And Retirement Disclosure [Abstract]
Schedule of Company Compensation Expense for the ESOP	the Company records compensation expense for the ESOP equal to fair market value of shares when they are committed to be released from the suspense account to participants’ accounts under the plan. June 30, 2020 Shares held by the ESOP include the following: Allocated 11,924 Committed to be allocated 5,962 Unallocated 220,587 Total 238,473
Schedule of Funded Status Valuation Report Percentage	The funded status (fair value of plan assets divided by funding target) as of July 1, 2019 is as follows: 2019 Valuation Report 92.61 % (1)

Other Comprehensive Income (Tab

Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2020
Disclosure Of Other Comprehensive Income Loss [Abstract]
Schedule of Accumulated Other Comprehensive Income	The following table presents a reconciliation of the changes in the components of other comprehensive income for the dates indicated, including the amount of income tax benefit (expense) allocated to each component of other comprehensive income: Reclassification Adjustment Three Months Ended June 30, 2020 Three Months Ended June 30, 2019 Affected Line Item in Statements of Income (Dollars in thousands) (Gains) losses on securities available for sale $ (169 ) $ 2 Securities gains (losses), net Tax effect 46 — Income tax expense $ (123 ) $ 2 Net income Net amortization of premium on securities $ 102 $ 14 Interest on debt securities Tax effect (28 ) (4 ) Income tax expense $ 74 $ 10 Net income Six Months Ended June 30, 2020 Six Months Ended June 30, 2019 (Gains) losses on securities available for sale $ (283 ) $ 10 Securities gains (losses), net Tax effect 77 (2 ) Income tax expense $ (206 ) $ 8 Net income Net amortization of premium on securities $ 151 $ 40 Interest on debt securities Tax effect (41 ) (11 ) Income tax expense $ 110 $ 29 Net income
Summary of Changes in Component of AOCI	The following tables present the changes in each component of AOCI for the periods indicated: (Dollars in thousands) Net Unrealized Gains (Losses) on AFS Securities (1) Net Unrealized Losses on Cash Flow Hedges (1) AOCI (1) Balance at December 31, 2018 $ (465 ) $ — $ (465 ) Other comprehensive income (loss) before reclassification 518 — 518 Amounts reclassified from AOCI 25 — 25 Other Comprehensive income (loss) 543 — 543 Balance at March 31, 2019 78 — 78 Other comprehensive income (loss) before reclassification 332 — 332 Amounts reclassified from AOCI 12 — 12 Other Comprehensive income (loss) 344 — 344 Balance at June 30, 2019 $ 422 $ — $ 422 Balance at December 31, 2019 $ 521 $ — $ 521 Other comprehensive income (loss) before reclassification 253 — 253 Amounts reclassified from AOCI (48 ) — (48 ) Other Comprehensive income (loss) 205 — 205 Balance at March 31, 2020 726 — 726 Other comprehensive income (loss) before reclassification 436 (124 ) 312 Amounts reclassified from AOCI (49 ) 5 (44 ) Other Comprehensive income (loss) 387 (119 ) 268 Balance at June 30, 2020 $ 1,113 $ (119 ) $ 994 (1) All amounts are net of tax

Regulatory Matters (Tables)

Regulatory Matters (Tables)	6 Months Ended
	Jun. 30, 2020
Disclosure Of Regulatory Matters [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	Capital levels required to be considered well capitalized are based upon prompt corrective action regulations, as amended to reflect the changes under the Basel III Capital Rules. Minimum Capital Minimum Capital Required For Capital Adequacy Plus Capital Conservation Buffer Actual Requirement Fully Phased-In (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio As of June 30, 2020 Total Capital (to risk- weighted assets) $ 50,295 17.26 % $ 23,313 8.00 % $ 30,599 10.50 % Tier I Capital (to risk- weighted assets) 47,100 16.16 17,485 6.00 24,770 8.50 Tier I Capital (to average assets) 47,100 10.62 17,742 4.00 17,742 4.00 Common Equity Tier 1 (to risk-weighted assets) 47,100 16.16 13,114 4.50 20,399 7.00 Minimum Capital Minimum To Be Well Capitalized Under Prompt Corrective Actual Requirement Action Provisions (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio December 31, 2019 Total Capital (to risk-weighted assets) $ 49,259 18.52 % $ 21,278 8.00 % $ 27,928 10.50 % Tier I Capital (to risk-weighted assets) 46,321 17.41 15,961 6.00 22,611 8.50 Tier I Capital (to average assets) 46,321 11.41 16,236 4.00 16,236 4.00 Common Equity Tier 1 (to risk-weighted assets) 46,321 17.41 11,971 4.50 18,621 7.00

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of the Company's Derivatives Associated with its Interest Rate Risk Management Activities	The following table summarizes the Company’s derivatives associated with its interest rate risk management activities: June 30, 2020 (Dollars in thousands) Start Date Maturity Date Rate Notional Assets Liabilities Debt Hedging Hedging Instruments: Interest Rate Swap 2020 4/13/2020 4/13/2025 0.68% $ 5,000 $ — $ 80 Interest Rate Swap 2021 4/13/2021 4/13/2026 0.74% $ 5,000 $ — $ 84 Total Hedging Instruments $ 10,000 $ — $ 164 Hedged Items: Variability in cash flows related to 90-day FHLB advances N/A $ — $ 5,000

Fair Values of Assets and Lia_2

Fair Values of Assets and Liabilities (Tables)	6 Months Ended
	Jun. 30, 2020
Fair Value, by Balance Sheet Grouping	The following table summarizes financial assets and liabilities measured at fair value on a recurring basis as of June 30, 2020 and December 31, 2019, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Total Level 1 Level 2 Level 3 (Dollars in thousands) June 30, 2020 Securities available-for-sale: U.S. Government-sponsored enterprises obligations $ 1,011 $ — $ 1,011 $ — U.S Government agency small business administration pools guaranteed by the SBA 2,681 — 2,681 — Collateralized mortgage obligations issued by the FHLMC 787 — 787 — Mortgage-backed securities 2,759 — 2,759 — Municipal bonds 36,985 — 36,985 — Other assets: Mortgage servicing rights 329 — — 329 Other liabilities: Derivatives 164 — 164 — Total Level 1 Level 2 Level 3 (Dollars in thousands) December 31, 2019 Securities available-for-sale: U.S. Government-sponsored enterprises obligations $ 8,997 $ — $ 8,997 $ — U.S Government agency small business administration pools guaranteed by the SBA 2,740 — 2,740 — Collateralized mortgage obligations issued by the FHLMC 980 — 980 — Mortgage-backed securities 3,188 — 3,188 — Municipal bonds 28,880 — 28,880 — Other assets: Mortgage servicing rights 397 — — 397
Summary of Significant Unobservable Inputs used in Level 3 Assets Measured at Fair Value on Recurring Basis	For Level 3 assets measured at fair value on a recurring basis as of June 30, 2020 and December 31, 2019, the significant unobservable inputs used in the fair value measurements were as follows: June 30, 2020 December 31, 2019 (Dollars in thousands) Valuation Technique Description Range Weighted Average (1) Fair Value Weighted Average (1) Fair Value Mortgage Servicing Rights Discounted Cash Flow Prepayment Rate 9.88% - 29.13% 18.57% $ 329 13.08% $ 397 Discount Rate 9.00% - 9.00% 9.00% 9.50% Delinquency Rate 2.33% - 2.90% 2.47% 2.48% Default Rate 0.08% - 0.14% 0.12% 0.09% (1) Unobservable inputs for mortgage servicing rights were weighted by loan amount.
Fair Value Measurements, Nonrecurring	The following summarizes assets measured at fair value on a nonrecurring basis at June 30, 2020 and December 31, 2019: Fair Value Measurements at Reporting Date Using: (Dollars in thousands) Total Quoted Prices in Active Markets for Identical Assets Level 1 Significant Other Observable Inputs Level 2 Significant Unobservable Inputs Level 3 June 30, 2020 Impaired Loans $ 909 $ — $ — $ 909 December 31, 2019 Impaired Loans $ 996 $ — $ — $ 996
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques	The following is a summary of the valuation methodology and unobservable inputs for Level 3 assets measured at fair value on a nonrecurring basis at June 30, 2020 and December 31, 2019: (Dollars in thousands) Fair Value Valuation Technique Unobservable Input June 30, 2020 Impaired Loans $ 909 Market Approach Appraisal of Collateral Selling Costs Provision December 31, 2019 Impaired Loans $ 996 Market Approach Appraisal of Collateral Selling Costs Provision
Fair Value Measurements, Recurring and Nonrecurring	The estimated fair values, and related carrying or notional amounts, of the Company’s financial instruments at June 30, 2020 and December 31, 2019 are as follows: (Dollars in thousands) Carrying Amount Fair Value Level 1 Level 2 Level 3 June 30, 2020 Financial Assets: Cash and due from banks $ 30,625 $ 30,625 $ 30,625 $ — $ — Interest-bearing time deposits with other banks 2,488 2,488 — 2,488 — Federal Home Loan Bank stock 2,776 2,776 — 2,776 — Bank-owned life insurance 4,292 4,292 — 4,292 — Loans, net 378,335 377,325 — — 377,325 Accrued interest receivable 1,360 1,360 1,360 — — Financial Liabilities: Deposits $ 330,625 $ 331,080 $ 272,576 $ 58,504 $ — Advances from Federal Home Loan Bank 51,312 52,897 — 52,897 — Advances from Federal Reserve Bank 25,713 25,713 25,713 Mortgagors’ tax escrow 706 706 — 706 — December 31, 2019 Financial Assets: Cash and due from banks $ 4,009 $ 4,009 $ 4,009 $ — $ — Interest-bearing time deposits with other banks 2,735 2,735 — 2,735 — Federal Home Loan Bank stock 2,971 2,971 — 2,971 — Bank-owned life insurance 4,267 4,267 — 4,267 — Loans, net 341,980 336,847 — — 336,847 Accrued interest receivable 1,235 1,235 1,235 — — Financial Liabilities: Deposits $ 281,616 $ 281,707 $ 220,596 $ 61,111 $ — Advances from Federal Home Loan Bank 66,219 66,060 — 66,060 — Mortgagors’ tax escrow 586 586 — 586 —
Fair Value, Inputs, Level 3 [Member]
Summary of Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis	For the six months ended June 30, 2020 and 2019, the changes in Level 3 assets and liabilities measured at fair value on a recurring basis were as follows: (Dollars in thousands) Mortgage Servicing Rights (1) Balance as of January 1, 2020 $ 397 Included in net income (68 ) Balance as of June 30, 2020 $ 329 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2020 $ — Balance as of January 1, 2019 $ 479 Included in net income (85 ) Balance as of June 30, 2019 $ 394 Total Unrealized Net Gains (Losses) Included in Net Income Related to Assets Still Held as of June 30, 2019 $ — (1) Realized and unrealized gains and losses related to mortgage servicing rights are reported as a component of mortgage banking income in the Company’s consolidated statements of income.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail)	1 Months Ended	6 Months Ended
	Jul. 17, 2019USD ($)shares	Jun. 30, 2020USD ($)Service$ / sharesshares	Dec. 31, 2019USD ($)shares
Accounting Policies [Abstract]
Stock issued during period,initial public offer		2,676,740
Repurchase of share ESOP	238,473
Employee stock ownership price per share | $ / shares		$ 10
Plan of reorganization, description of equity securities issued or to be issued		In addition, as part of the Reorganization, the Company issued 3,345,925 shares of common stock to First Seacoast Bancorp, MHC (the “MHC”), the Bank’s parent mutual holding company, and 60,835 shares of common stock and $150,000 in cash to First Seacoast Community Foundation, Inc. (the “Foundation”), a charitable foundation formed in connection with the reorganization and dedicated to supporting charitable organizations operating in the Bank’s local community. The Company’s common stock began trading on the NASDAQ Capital Market under the symbol “FSEA” on July 17, 2019. Pursuant to the Plan of Reorganization, the Bank adopted an employee stock ownership plan (“ESOP”), which purchased 238,473 shares of common stock in the stock offering with the proceeds of a loan from the Company. As a result of the Reorganization, a total of 6,083,500 shares of common stock of the Company are issued and outstanding, of which 55% are issued to the MHC, 44% were sold to the Bank’s eligible members, the ESOP, and certain other persons in the stock offering, and 1% were contributed to the Foundation.
Stock issued to mutual holding company as part of reorganization	3,345,925
Stock issued during period shares to charitable organisations	60,835
Cash transferred to charitable foundation as part of reorganization | $	$ 150,000
ESOP,unearned compensation, shares		238,473
Common stock, shares, issued		6,083,500	6,083,500
Percentage of common stock shares offered to eligible members	55.00%
Percentage of common stock shares offered to charitable foundation	44.00%
Equity method investment ownership percentage	1.00%
Stock issuance cost | $	$ 1,600,000
Number of core services | Service		4
Assets under management | $		$ 49,600,000	$ 49,300,000
Emerging growth of company status		(i) the last day of the fiscal year of the Company during which it had total annual gross revenues of $1.07 billion (as adjusted for inflation) or more; (ii) the last day of the fiscal year of the Company following the fifth anniversary of the effective date of the Company’s initial public offering; (iii) the date on which the Company has, during the previous three-year period, issued more than $1.0 billion in non-convertible debt; or (iv) the date on which the Company is deemed to be a “large accelerated filer” under Securities and Exchange Commission regulations (generally, at least $700 million of voting and non-voting equity held by non-affiliates).

Cash and Due From Banks (Additi

Cash and Due From Banks (Additional Information) (Detail) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Cash And Due From Banks [Abstract]
Cash and due from banks	$ 30,625,000	$ 4,009,000
Cash collateral from counterparties	$ 525,000	$ 0

Securities Available-for-Sale -

Securities Available-for-Sale - Schedule of amortized cost and fair value of securities available-for-sale (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Amortized Cost	$ 42,696	$ 44,070
Gross Unrealized Gains	1,564	815
Gross Unrealized Losses	(37)	(100)
Fair Value	44,223	44,785
U.S. Government-sponsored enterprises obligations [Member]
Amortized Cost	1,000	9,000
Gross Unrealized Gains	11	11
Gross Unrealized Losses		(14)
Fair Value	1,011	8,997
U.S. Government agency small business administration pools guaranteed by SBA [Member]
Amortized Cost	2,620	2,760
Gross Unrealized Gains	61
Gross Unrealized Losses		(20)
Fair Value	2,681	2,740
Collateralized mortgage obligations issued by the FHLMC [Member]
Amortized Cost	772	986
Gross Unrealized Gains	15
Gross Unrealized Losses		(6)
Fair Value	787	980
Residential mortgage backed securities [Member]
Amortized Cost	2,684	3,186
Gross Unrealized Gains	75	4
Gross Unrealized Losses		(2)
Fair Value	2,759	3,188
Municipal bonds [Member]
Amortized Cost	35,620	28,138
Gross Unrealized Gains	1,402	800
Gross Unrealized Losses	(37)	(58)
Fair Value	$ 36,985	$ 28,880

Securities Available-for-Sale_2

Securities Available-for-Sale - Schedule of amortized cost and fair values of available-for-sale securities by contractual maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Due after five years through ten years, Amortized Cost	$ 1,000
Due after ten years, Amortized Cost	35,620
Total U.S. Government-sponsored enterprises obligations and municipal bonds, Amortized Cost	36,620
Mortgage-backed securities, Amortized Cost	42,696	$ 44,070
Due after five years through ten years, Fair Value	1,011
Due after ten years, Fair Value	36,985
Total U.S. Government-sponsored enterprises obligations and municipal bonds, Fair Value	37,996
Mortgage-backed securities, Fair Value	44,223	44,785
U.S. Government agency small business pools guaranteed by SBA [Member]
Mortgage-backed securities, Amortized Cost	2,620	2,760
Mortgage-backed securities, Fair Value	2,681	2,740
Collateralized mortgage obligations issued by the FHLMC [Member]
Mortgage-backed securities, Amortized Cost	772	986
Mortgage-backed securities, Fair Value	787	980
Residential mortgage-backed securities
Mortgage-backed securities, Amortized Cost	2,684	3,186
Mortgage-backed securities, Fair Value	$ 2,759	$ 3,188

Securities Available-for-Sale_3

Securities Available-for-Sale - Summary of gross unrealized losses and fair value for those investments with unrealized losses (Detail) $ in Thousands	Jun. 30, 2020USD ($)Number	Dec. 31, 2019USD ($)Number
Less than 12 Months, Number of Securities | Number	14	14
Less than 12 Months, Fair Value	$ 4,793	$ 10,766
Less than 12 Months, Unrealized Losses	(37)	$ (91)
More than 12 Months, Number of Securities | Number		1
More than 12 Months, Fair Value		$ 1,991
More than 12 Months, Unrealized Losses		(9)
Total, Fair Value	4,793	12,757
Total, Unrealized Losses	$ (37)	$ (100)
U.S. Government-sponsored enterprises obligations [Member]
Less than 12 Months, Number of Securities | Number		2
Less than 12 Months, Fair Value		$ 1,995
Less than 12 Months, Unrealized Losses		$ (5)
More than 12 Months, Number of Securities | Number		1
More than 12 Months, Fair Value		$ 1,991
More than 12 Months, Unrealized Losses		(9)
Total, Fair Value		3,986
Total, Unrealized Losses		$ (14)
U.S. Government agency small business administration pools guaranteed by SBA [Member]
Less than 12 Months, Number of Securities | Number		2
Less than 12 Months, Fair Value		$ 2,740
Less than 12 Months, Unrealized Losses		(20)
Total, Fair Value		2,740
Total, Unrealized Losses		$ (20)
Collateralized mortgage obligations issued by the FHLMC [Member]
Less than 12 Months, Number of Securities | Number		1
Less than 12 Months, Fair Value		$ 980
Less than 12 Months, Unrealized Losses		(6)
Total, Fair Value		980
Total, Unrealized Losses		$ (6)
Residential mortgage backed securities [Member]
Less than 12 Months, Number of Securities | Number		1
Less than 12 Months, Fair Value		$ 999
Less than 12 Months, Unrealized Losses		(2)
Total, Fair Value		999
Total, Unrealized Losses		$ (2)
Municipal bonds [Member]
Less than 12 Months, Number of Securities | Number	14	8
Less than 12 Months, Fair Value	$ 4,793	$ 4,052
Less than 12 Months, Unrealized Losses	(37)	(58)
Total, Fair Value	4,793	4,052
Total, Unrealized Losses	$ (37)	$ (58)

Securities Available-for-Sale_4

Securities Available-for-Sale - Summary of sales proceeds and gross realized gains and losses on available for sale securities (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Available For Sale Securities [Abstract]
Proceeds from sales and maturities of securities available-for-sale	$ 3,690	$ 5,529	$ 19,421	$ 7,009
Gross realized gains	169	7	287	10
Gross realized losses		(9)	(4)	(20)
Net realized gains (losses)	$ 169	$ (2)	$ 283	$ (10)

Securities Available-for-Sale_5

Securities Available-for-Sale - Additional Information (Detail) - Security	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Available For Sale Securities [Abstract]
Number of holdings more than ten percentage of fair value of securities issued by single issuer	0	0

Loans - Additional Information

Loans - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2020USD ($)Loan	Dec. 31, 2019USD ($)
Loans outstanding	$ 5.4	$ 5.2
Short Term Loan Modification Program [Member]
Loans, deferral payment period	90 days
Loans, deferral extended payment period	90 days
Loans, deferral maximum payment period	180 days
Temporary payment relief provided for number of loans | Loan	134
Aggregate outstanding principal balance provided for temporary payment relief	$ 50.3
Short Term Loan Modification Program [Member] | Commercial Loans [Member]
Temporary payment relief provided for number of loans | Loan	55
Aggregate outstanding principal balance provided for temporary payment relief	$ 34.3
Short Term Loan Modification Program [Member] | Residential Loans [Member]
Temporary payment relief provided for number of loans | Loan	79
Aggregate outstanding principal balance provided for temporary payment relief	$ 16
PPP Loans [Member]
CARES Act number of guaranteed loans | Loan	269
CARES Act aggregate guaranteed outstanding loans	$ 32.7

Loans - Loans Consisted (Detail

Loans - Loans Consisted (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Total loans	$ 381,521		$ 343,799
Net deferred loan (fees) costs	(33)		1,056
Allowance for loan losses	(3,153)	$ (3,009)	(2,875)	$ (2,832)	$ (2,806)	$ (2,806)
Net loans	378,335		341,980
CRE [Member]
Total loans	69,068		70,194
Allowance for loan losses	(740)	(796)	(781)	(722)	(644)	(560)
MF [Member]
Total loans	6,425		4,888
Allowance for loan losses	(52)	(48)	(23)	(22)	(21)	(22)
C+I [Member]
Total loans	53,696		24,676
Allowance for loan losses	(278)	(287)	(350)	(216)	(220)	(232)
ADL [Member]
Total loans	23,637		18,844
Allowance for loan losses	(223)	(135)	(145)	(82)	(143)	(88)
RES [Member]
Total loans	217,376		213,322
Allowance for loan losses	(1,690)	(1,643)	(1,503)	(1,728)	(1,585)	(1,593)
HELOC [Member]
Total loans	9,359		10,123
Allowance for loan losses	(58)	(79)	(52)	(54)	(51)	(69)
CON [Member]
Total loans	1,960		1,752
Allowance for loan losses	$ (29)	$ (20)	$ (18)	$ (9)	$ (5)	$ (7)

Loans - Transactions In The All

Loans - Transactions In The Allowance For Loan Losses ("ALL") (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Balance	$ 3,009	$ 2,875	$ 2,806	$ 2,806	$ 2,875	$ 2,806
Provision for loan losses	160	115	25		275	25
Charge-offs	(18)
Recoveries	2	19	1
Balance	3,153	3,009	2,832	2,806	3,153	2,832
CRE [Member]
Balance	796	781	644	560	781	560
Provision for loan losses	(56)	(4)	78	84
Recoveries		19
Balance	740	796	722	644	740	722
MF [Member]
Balance	48	23	21	22	23	22
Provision for loan losses	4	25	1	(1)
Balance	52	48	22	21	52	22
C+I [Member]
Balance	287	350	220	232	350	232
Provision for loan losses	(11)	(63)	(4)	(12)
Recoveries	2
Balance	278	287	216	220	278	216
ADL [Member]
Balance	135	145	143	88	145	88
Provision for loan losses	88	(10)	(61)	55
Balance	223	135	82	143	223	82
RES [Member]
Balance	1,643	1,503	1,585	1,593	1,503	1,593
Provision for loan losses	47	140	143	(8)
Balance	1,690	1,643	1,728	1,585	1,690	1,728
HELOC [Member]
Balance	79	52	51	69	52	69
Provision for loan losses	(21)	27	3	(18)
Balance	58	79	54	51	58	54
CON [Member]
Balance	20	18	5	7	18	7
Provision for loan losses	27	2	3	(2)
Charge-offs	(18)
Recoveries			1
Balance	29	20	9	5	29	9
Unallocated [Member]
Balance	1	3	137	235	3	235
Provision for loan losses	82	(2)	(138)	(98)
Balance	$ 83	$ 1	$ (1)	$ 137	$ 83	$ (1)

Loans - Information About Loans

Loans - Information About Loans And The ALL By Portfolio Segment Are Summarized (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Individually evaluated for impairment	$ 1,312		$ 1,171
Collectively evaluated for impairment	380,209		342,628
Total	381,521		343,799
Collectively evaluated for impairment	3,153		2,875
Total	3,153	$ 3,009	2,875	$ 2,832	$ 2,806	$ 2,806
CRE [Member]
Individually evaluated for impairment	229		109
Collectively evaluated for impairment	68,839		70,085
Total	69,068		70,194
Collectively evaluated for impairment	740		781
Total	740	796	781	722	644	560
MF [Member]
Collectively evaluated for impairment	6,425		4,888
Total	6,425		4,888
Collectively evaluated for impairment	52		23
Total	52	48	23	22	21	22
C+I [Member]
Individually evaluated for impairment	1,018		996
Collectively evaluated for impairment	52,678		23,680
Total	53,696		24,676
Collectively evaluated for impairment	278		350
Total	278	287	350	216	220	232
ADL [Member]
Collectively evaluated for impairment	23,637		18,844
Total	23,637		18,844
Collectively evaluated for impairment	223		145
Total	223	135	145	82	143	88
RES [Member]
Individually evaluated for impairment	65		66
Collectively evaluated for impairment	217,311		213,256
Total	217,376		213,322
Collectively evaluated for impairment	1,690		1,503
Total	1,690	1,643	1,503	1,728	1,585	1,593
HELOC [Member]
Collectively evaluated for impairment	9,359		10,123
Total	9,359		10,123
Collectively evaluated for impairment	58		52
Total	58	79	52	54	51	69
CON [Member]
Collectively evaluated for impairment	1,960		1,752
Total	1,960		1,752
Collectively evaluated for impairment	29		18
Total	29	20	18	9	5	7
Unallocated [Member]
Collectively evaluated for impairment	83		3
Total	$ 83	$ 1	$ 3	$ (1)	$ 137	$ 235

Loans - Analysis Of Past Due Lo

Loans - Analysis Of Past Due Loans By Portfolio Segment (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Total Past Due	$ 1,235	$ 1,081
Current	380,286	342,718
Total	381,521	343,799
Non-Accrual Loans	974	1,062
CRE [Member]
Total Past Due	210
Current	68,858	70,194
Total	69,068	70,194
MF [Member]
Current	6,425	4,888
Total	6,425	4,888
C+I [Member]
Total Past Due	909	996
Current	52,787	23,680
Total	53,696	24,676
Non-Accrual Loans	909	996
ADL [Member]
Current	23,637	18,844
Total	23,637	18,844
RES [Member]
Total Past Due	108	85
Current	217,268	213,237
Total	217,376	213,322
Non-Accrual Loans	65	66
HELOC [Member]
Total Past Due	8
Current	9,351	10,123
Total	9,359	10,123
CON [Member]
Current	1,960	1,752
Total	1,960	1,752
30-59 Days Past Due [Member]
Total Past Due	218
30-59 Days Past Due [Member] | CRE [Member]
Total Past Due	210
30-59 Days Past Due [Member] | HELOC [Member]
Total Past Due	8
60-89 Days Past Due [Member]
Total Past Due	43	19
60-89 Days Past Due [Member] | RES [Member]
Total Past Due	43	19
Greater than 90 Days [Member]
Total Past Due	974	1,062
Greater than 90 Days [Member] | C+I [Member]
Total Past Due	909	996
Greater than 90 Days [Member] | RES [Member]
Total Past Due	$ 65	$ 66

Loans - Provides Information On

Loans - Provides Information On Impaired Loans (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Recorded Carrying Value	$ 974	$ 1,062
Unpaid Principal Balance	1,063	1,123
Average Recorded Investment	1,019	411
Interest Income Recognized		36
C+I [Member]
Recorded Carrying Value	909	996
Unpaid Principal Balance	998	1,057
Average Recorded Investment	953	344
Interest Income Recognized		36
RES [Member]
Recorded Carrying Value	65	66
Unpaid Principal Balance	65	66
Average Recorded Investment	$ 66	$ 67

Loans - Internal Risk Rating Of

Loans - Internal Risk Rating Of Loans By Portfolio Segment (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Total Loans	$ 381,521	$ 343,799
Pass [Member]
Total Loans	378,293	341,156
Special Mention [Member]
Total Loans	1,916	2,166
Substandard [Member]
Total Loans	1,312	477
CRE [Member]
Total Loans	69,068	70,194
CRE [Member] | Pass [Member]
Total Loans	68,724	70,085
CRE [Member] | Special Mention [Member]
Total Loans	115
CRE [Member] | Substandard [Member]
Total Loans	229	109
MF [Member]
Total Loans	6,425	4,888
MF [Member] | Pass [Member]
Total Loans	6,425	4,888
C+I [Member]
Total Loans	53,696	24,676
C+I [Member] | Pass [Member]
Total Loans	50,877	22,208
C+I [Member] | Special Mention [Member]
Total Loans	1,801	2,166
C+I [Member] | Substandard [Member]
Total Loans	1,018	302
ADL [Member]
Total Loans	23,637	18,844
ADL [Member] | Pass [Member]
Total Loans	23,637	18,844
RES [Member]
Total Loans	217,376	213,322
RES [Member] | Pass [Member]
Total Loans	217,311	213,256
RES [Member] | Substandard [Member]
Total Loans	65	66
HELOC [Member]
Total Loans	9,359	10,123
HELOC [Member] | Pass [Member]
Total Loans	9,359	10,123
CON [Member]
Total Loans	1,960	1,752
CON [Member] | Pass [Member]
Total Loans	$ 1,960	$ 1,752

Loan Servicing - Additional Inf

Loan Servicing - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Transfers And Servicing [Abstract]
Transferred financial assets principal amount outstanding	$ 50,000		$ 50,000		$ 49,300
Loan servicing fee income (loss)	$ 18	$ (20)	$ (7)	$ (25)
Servicing assets and servicing liabilities at fair value discount rate			9.00%	9.50%
Servicing assets and servicing liabilities at fair value weighted average prepayment speed			18.57%	12.89%
Servicing assets and servicing liabilities at fair value weighted average delinquency rate			2.47%	2.68%
Servicing assets and servicing liabilities at fair value weighted average default rate			0.12%	0.10%

Loan Servicing - Summary Of Act

Loan Servicing - Summary Of Activity In Mortgage Servicing Rights (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Transfers And Servicing [Abstract]
Balance, beginning of year	$ 342	$ 397	$ 444	$ 479
Additions	46	43	17	11
Payoffs	(31)	(26)	(5)	(11)
Change in fair value due to change in assumptions	(28)	(72)	(62)	(35)
Balance, end of year	$ 329	$ 342	$ 394	$ 444

Deposits - Deposit Liabilities

Deposits - Deposit Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Deposits [Abstract]
NOW and demand deposits	$ 148,433	$ 115,024
Money market deposits	75,677	65,611
Savings deposits	48,466	39,962
Time deposits of $250,000 and greater	12,151	13,481
Time deposits less than $250,000	45,898	47,538
Total deposits	$ 330,625	$ 281,616

Deposits - Time Deposit Maturit

Deposits - Time Deposit Maturities (Detail) $ in Thousands	Jun. 30, 2020USD ($)
Deposits [Abstract]
2020	$ 31,034
2021	20,898
2022	4,233
2023	977
2024	450
2025	457
Total	$ 58,049

Deposits - Additional informati

Deposits - Additional information (Detail) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Time Deposits [Member]
Brokered deposits	$ 0	$ 0

Borrowings - Schedule of Federa

Borrowings - Schedule of Federal Home Loan Bank Advances by Branch of FHLB Bank (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Principal Amounts	$ 51,312	$ 66,219
Federal Home Loan Bank Advances One [Member]
Principal Amounts	$ 10,000	$ 44,907
Maturity Dates	2020	2020
Federal Home Loan Bank Advances One [Member] | Minimum [Member]
Interest Rates	0.60%	1.77%
Federal Home Loan Bank Advances One [Member] | Maximum [Member]
Interest Rates	2.15%	2.19%
Federal Home Loan Bank Advances Two [Member]
Principal Amounts	$ 2,262	$ 2,262
Maturity Dates	2022	2022
Interest Rates	0.00%	0.00%
Federal Home Loan Bank Advances Three [Member]
Principal Amounts	$ 18,800	$ 18,800
Maturity Dates	2024	2024
Federal Home Loan Bank Advances Three [Member] | Minimum [Member]
Interest Rates	0.00%	0.00%
Federal Home Loan Bank Advances Three [Member] | Maximum [Member]
Interest Rates	1.69%	1.69%
Federal Home Loan Bank Advances Four [Member]
Principal Amounts	$ 20,000	$ 250
Maturity Dates	2025	2028
Interest Rates		0.00%
Federal Home Loan Bank Advances Four [Member] | Minimum [Member]
Interest Rates	1.35%
Federal Home Loan Bank Advances Four [Member] | Maximum [Member]
Interest Rates	1.52%
Federal Home Loan Bank Advances Five [Member]
Principal Amounts	$ 250
Maturity Dates	2028
Interest Rates	0.00%

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2020USD ($)Loan	Dec. 31, 2019USD ($)
Banks unused remaining borrowing capacity	$ 92.8	$ 81.7
Federal home loan bank maximum borrowing capacity	$ 3
PPPLF [Member]
CARES Act loan interest rate	35.00%
CARES Act loan advances	$ 25.7
CARES Act collateralized loans | Loan	156
Fed Funds borrowing [Member]
Fed funds borrowing capacity	$ 5

Employee Benefits - Additional

Employee Benefits - Additional information (Detail) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 17, 2019	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2020	Dec. 31, 2019
Number of shares committed to be released each year,ESOP		5,962		5,962
Stock Repurchase	238,473
Employee stock option unallocated shares fair value		$ 1,400		$ 1,400
Defined Benefit Plan, Plan Assets, Contributions by Employer		44,000	$ 45,000	94,000	$ 79,000
Deferred Compensation Liability, Current and Noncurrent		1,590,000		1,590,000			$ 1,607,000
Scenario Forecast [Member]
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant						$ 378,000
Pentegra DB Plan [Member]
Pension Cost (Reversal of Cost)		90,000	86,000	189,000	173,000
Salary Continuation Plan [Member] | Supplemental Employee Retirement Plan [Member]
Liability, Defined Benefit Plan		$ 566,000		$ 566,000			590,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		5.00%		5.00%
Employee Salary Incremental Percent				5.00%
Defined Contribution Plan, Cost		$ 23,000	23,000	$ 50,000	46,000
Executive Supplemental Retirement Plan [Member] | Supplemental Employee Retirement Plan [Member]
Liability, Defined Benefit Plan		$ 171,000		$ 171,000			$ 171,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		6.25%		6.25%			6.25%
Endorsement Method Split Dollar Plan [Member] | Supplemental Employee Retirement Plan [Member]
Pension Cost (Reversal of Cost)		$ 0	(7,000)	$ 0	(13,000)
Liability, Defined Benefit Plan		33,000		33,000			$ 33,000
Deferred Directors Supplemental Retirement Plan [Member] | Supplemental Employee Retirement Plan [Member]
Pension Cost (Reversal of Cost)		18,000	$ 19,000	28,000	$ 51,000
Liability, Defined Benefit Plan		$ 545,000		$ 545,000			$ 581,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate		6.25%		6.25%			6.25%
Deferred Compensation Liability, Current and Noncurrent		$ 275,000		$ 275,000			$ 233,000
First Seacoast Bank Employee Stock Ownership Plan [Member]
Number of shares committed to be released each year,ESOP			11,924		11,924
Employee stock option compensation recognized		19,000		$ 45,000
Employee stock option plan [Member]
Stock Repurchase				238,473
Remaining loan maturity date				Dec. 31, 2038
Percentage of Purchase price common stock				100.00%
Remaining Principal Balance of Debt		$ 2,300,000		$ 2,300,000

Employee Benefits - Schedule of

Employee Benefits - Schedule of Company Compensation Expense for the ESOP (Detail) - shares	Jun. 30, 2020	Dec. 31, 2019
Employee Stock Ownership Plan E S O P Shares In E S O P [Abstract]
Allocated	11,924
Committed to be allocated	5,962
Unallocated	220,587	226,549
Total	238,473

Employee Benefits - Fair Value

Employee Benefits - Fair Value of Plan Assets Divided by Funding Target (Detail)	Jul. 01, 2019
Pension Plan [Member]
Percentage of funding status	92.61%	[1]
[1]	Fair value of plan assets reflects any contributions received through June 30, 2019 .

Other Comprehensive Income - Sc

Other Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disclosure Of Other Comprehensive Income Loss [Abstract]
(Gains) losses on securities available for sale	$ (169)	$ 2	$ (283)	$ 10
Tax effect	46		77	(2)
Net income	(123)	2	(206)	8
Net amortization of premium on securities	102	14	151	40
Tax effect	(28)	(4)	(41)	(11)
Net income	$ 74	$ 10	$ 110	$ 29

Other Comprehensive Income - Su

Other Comprehensive Income - Summary of Changes in Component of AOCI (Detail) - USD ($) $ in Thousands		3 Months Ended								6 Months Ended
		Jun. 30, 2020		Mar. 31, 2020		Jun. 30, 2019		Mar. 31, 2019		Jun. 30, 2020	Jun. 30, 2019
Balance at the beginning of the period	[1]	$ 726		$ 521		$ 78		$ (465)		$ 521	$ (465)
Other comprehensive income (loss) before reclassification	[1]	312		253		332		518
Amounts reclassified from AOCI	[1]	(44)		(48)		12		25
Other comprehensive income		268	[1]	205	[1]	344	[1]	543	[1]	473	887
Balance at the end of the period	[1]	994		726		422		78		994	422
Net Unrealized Gains (Losses) on AFS Securities [Member]
Balance at the beginning of the period	[1]	726		521		78		(465)		521	(465)
Other comprehensive income (loss) before reclassification	[1]	436		253		332		518
Amounts reclassified from AOCI	[1]	(49)		(48)		12		25
Other comprehensive income	[1]	387		205		344		543
Balance at the end of the period	[1]	1,113		$ 726		$ 422		$ 78		1,113	$ 422
Net Unrealized Losses on Cash Flow Hedges [Member]
Other comprehensive income (loss) before reclassification	[1]	(124)
Amounts reclassified from AOCI	[1]	5
Other comprehensive income	[1]	(119)
Balance at the end of the period	[1]	$ (119)								$ (119)
[1]	All amounts are net of tax

Regulatory Matters - Additional

Regulatory Matters - Additional Information (Detail)	Jun. 30, 2020	Dec. 31, 2019	Jan. 01, 2019
Total Capital (to risk-weighted assets)	8	8	8
Tier I Capital (to risk-weighted assets)	6	6	6
Tier I Capital (to average assets)	4	4	4
Common Equity Tier 1 (to risk-weighted assets)	4.50%	4.50%	4.50%
Capital Conservation Buffer Ratio			2.50%
Fully Phased In [Member]
Total Capital (to risk-weighted assets)	10.50	10.5	10.5
Tier I Capital (to risk-weighted assets)	8.50	8.5	8.5
Tier I Capital (to average assets)	4	4
Common Equity Tier 1 (to risk-weighted assets)	7.00%	7.00%	7.00%

Regulatory Matters - Schedule o

Regulatory Matters - Schedule of Regulatory Capital Requirements (Detail) $ in Thousands	Jun. 30, 2020USD ($)	Dec. 31, 2019USD ($)	Jan. 01, 2019
Actual, Total Capital (to risk- weighted assets)	$ 50,295	$ 49,259
Actual, Tier I Capital (to risk- weighted assets)	47,100	46,321
Actual, Tier I Capital (to average assets)	47,100	46,321
Actual, Common Equity Tier 1 (to risk-weighted assets)	$ 47,100	$ 46,321
Actual Ratio, Total Capital (to risk- weighted assets)	17.26	18.52
Actual Ratio, Tier I Capital (to risk- weighted assets)	16.16	17.41
Actual Ratio, Tier I Capital (to average assets)	10.62	11.41
Actual Ratio, Common Equity Tier 1 (to risk-weighted assets)	16.16	17.41
Minimum Capital Requirement, Total Capital (to risk-weighted assets)	$ 23,313	$ 21,278
Minimum Capital Requirement, Tier I Capital (to risk-weighted assets)	17,485	15,961
Minimum Capital Requirement, Tier I Capital (to average assets)	17,742	16,236
Minimum Capital Requirement, Common Equity Tier 1 (to risk-weighted assets)	$ 13,114	$ 11,971
Minimum Capital Requirement Ratio, Total Capital (to risk-weighted assets)	8	8	8
Minimum Capital Requirement Ratio, Tier I Capital (to risk-weighted assets)	6	6	6
Minimum Capital Requirement Ratio, Tier I Capital (to average assets)	4	4	4
Minimum Capital Requirement Ratio, Common Equity Tier 1 (to risk-weighted assets)	4.50%	4.50%	4.50%
Minimum To Be Well Capitalized Under Prompt Corrective, Total Capital (to risk-weighted assets)		$ 27,928
Minimum To Be Well Capitalized Under Prompt Corrective, Tier I Capital (to risk-weighted assets)		22,611
Minimum To Be Well Capitalized Under Prompt Corrective, Tier I Capital (to average assets)		16,236
Minimum To Be Well Capitalized Under Prompt Corrective, Common Equity Tier 1 (to risk-weighted assets)		$ 18,621
Minimum To Be Well Capitalized Under Prompt Corrective Ratio, Total Capital (to risk-weighted assets)		10.50
Minimum To Be Well Capitalized Under Prompt Corrective Ratio, Tier I Capital (to risk-weighted assets)		8.50
Minimum To Be Well Capitalized Under Prompt Corrective Ratio, Tier I Capital (to average assets)		4
Minimum To Be Well Capitalized Under Prompt Corrective Ratio, Common Equity Tier 1 (to risk-weighted assets)		7.00%
Fully Phased-In
Minimum Capital Requirement, Total Capital (to risk-weighted assets)	$ 30,599
Minimum Capital Requirement, Tier I Capital (to risk-weighted assets)	24,770
Minimum Capital Requirement, Tier I Capital (to average assets)	17,742
Minimum Capital Requirement, Common Equity Tier 1 (to risk-weighted assets)	$ 20,399
Minimum Capital Requirement Ratio, Total Capital (to risk-weighted assets)	10.50	10.5	10.5
Minimum Capital Requirement Ratio, Tier I Capital (to risk-weighted assets)	8.50	8.5	8.5
Minimum Capital Requirement Ratio, Tier I Capital (to average assets)	4	4
Minimum Capital Requirement Ratio, Common Equity Tier 1 (to risk-weighted assets)	7.00%	7.00%	7.00%

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Additional Information (Detail)	3 Months Ended	6 Months Ended
	Jun. 30, 2020USD ($)Derivative	Jun. 30, 2020USD ($)Derivative	Dec. 31, 2019USD ($)
Derivatives Fair Value [Line Items]
Interest rate swaps		$ (164,000)
Cash collateral from counterparties	$ 525,000	525,000	$ 0
Designated as Hedging Instrument | Interest Rate Swaps [Member]
Derivatives Fair Value [Line Items]
Notional amount	10,000,000	10,000,000
Interest rate swaps	(164,000,000)
Liabilities	164,000	164,000
Designated as Hedging Instrument | Interest Rate Swaps [Member] | Other Liabilities [Member]
Derivatives Fair Value [Line Items]
Interest rate swap derivative liability	164,000,000	164,000,000
Designated as Hedging Instrument | Interest Rate Swap 2020 [Member]
Derivatives Fair Value [Line Items]
Notional amount	$ 5,000,000	5,000,000
Start date	Apr. 13, 2020
Liabilities	$ 80,000	80,000
Designated as Hedging Instrument | Interest Rate Swap 2021 [Member]
Derivatives Fair Value [Line Items]
Notional amount	$ 5,000,000	5,000,000
Start date	Apr. 13, 2021
Liabilities	$ 84,000	84,000
Cash Flow Hedges on 90-day Advances from FHLB [Member]
Derivatives Fair Value [Line Items]
Liabilities	$ 5,000,000	$ 5,000,000
Cash Flow Hedges on 90-day Advances from FHLB [Member] | Designated as Hedging Instrument | Interest Rate Swaps [Member]
Derivatives Fair Value [Line Items]
Number of notional interest rate swaps | Derivative	2	2
Cash Flow Hedges on 90-day Advances from FHLB [Member] | Designated as Hedging Instrument | Interest Rate Swap 2020 [Member]
Derivatives Fair Value [Line Items]
Notional amount	$ 5,000,000	$ 5,000,000
Cash Flow Hedges on 90-day Advances from FHLB [Member] | Designated as Hedging Instrument | Interest Rate Swap 2021 [Member]
Derivatives Fair Value [Line Items]
Notional amount	$ 5,000,000	5,000,000
Start date	Apr. 13, 2021
Balance Sheet Hedges on 90-day Advances from FHLB [Member]
Derivatives Fair Value [Line Items]
Liabilities	$ 5,000,000	$ 5,000,000

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Summary of the Company's Derivatives Associated with its Interest Rate Risk Management Activities (Detail) $ in Thousands	3 Months Ended
	Jun. 30, 2020USD ($)
Cash Flow Hedges on 90-day Advances from FHLB [Member]
Derivatives Fair Value [Line Items]
Liabilities	$ 5,000
Designated as Hedging Instrument | Interest Rate Swap 2020 [Member]
Derivatives Fair Value [Line Items]
Start Date	Apr. 13, 2020
Maturity Date	Apr. 13, 2025
Rate	0.68%
Notional	$ 5,000
Liabilities	80
Designated as Hedging Instrument | Interest Rate Swap 2020 [Member] | Cash Flow Hedges on 90-day Advances from FHLB [Member]
Derivatives Fair Value [Line Items]
Notional	$ 5,000
Designated as Hedging Instrument | Interest Rate Swap 2021 [Member]
Derivatives Fair Value [Line Items]
Start Date	Apr. 13, 2021
Maturity Date	Apr. 13, 2026
Rate	0.74%
Notional	$ 5,000
Liabilities	$ 84
Designated as Hedging Instrument | Interest Rate Swap 2021 [Member] | Cash Flow Hedges on 90-day Advances from FHLB [Member]
Derivatives Fair Value [Line Items]
Start Date	Apr. 13, 2021
Notional	$ 5,000
Designated as Hedging Instrument | Interest Rate Swaps [Member]
Derivatives Fair Value [Line Items]
Notional	10,000
Liabilities	$ 164

Fair Values of Assets and Lia_3

Fair Values of Assets and Liabilities - Fair Value, by Balance Sheet Grouping (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Securities available-for-sale:
Securities available-for-sale, at fair value	$ 44,223	$ 44,785
U.S. Government-sponsored enterprises obligations [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	1,011	8,997
U.S. Government agency small business administration pools guaranteed by SBA [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	2,681	2,740
Municipal bonds [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	36,985	28,880
Fair Value, Measurements, Recurring [Member] | U.S. Government-sponsored enterprises obligations [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	1,011	8,997
Fair Value, Measurements, Recurring [Member] | U.S. Government agency small business administration pools guaranteed by SBA [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	2,681	2,740
Fair Value, Measurements, Recurring [Member] | Collateralized Mortgage Obligations Issued by the FHLMC [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	787	980
Fair Value, Measurements, Recurring [Member] | Mortgage-backed securities [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	2,759	3,188
Fair Value, Measurements, Recurring [Member] | Municipal bonds [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	36,985	28,880
Fair Value, Measurements, Recurring [Member] | Derivative [Member]
Other liabilities:
Liabilities, Fair Value Disclosure	164
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Government-sponsored enterprises obligations [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	1,011	8,997
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. Government agency small business administration pools guaranteed by SBA [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	2,681	2,740
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Mortgage Obligations Issued by the FHLMC [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	787	980
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage-backed securities [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	2,759	3,188
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Municipal bonds [Member]
Securities available-for-sale:
Securities available-for-sale, at fair value	36,985	28,880
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Derivative [Member]
Other liabilities:
Liabilities, Fair Value Disclosure	164
Fair Value, Measurements, Recurring [Member] | Mortgage-backed securities [Member]
Other assets:
Assets, Fair Value Disclosure	329	397
Fair Value, Measurements, Recurring [Member] | Mortgage-backed securities [Member] | Fair Value, Inputs, Level 3 [Member]
Other assets:
Assets, Fair Value Disclosure	$ 329	$ 397

Fair Values of Assets and Lia_4

Fair Values of Assets and Liabilities - Summary of Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - Fair Value, Inputs, Level 3 [Member] - Fair Value, Measurements, Recurring [Member] - Mortgage-backed securities [Member] - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Beginning Balance	[1]	$ 397	$ 479
Included in net income	[1]	(68)	(85)
Ending Balance	[1]	$ 329	$ 394
[1]	Realized and unrealized gains and losses related to mortgage servicing rights are reported as a component of mortgage banking income in the Company’s consolidated statements of income.

Fair Values of Assets and Lia_5

Fair Values of Assets and Liabilities - Summary of Significant Unobservable Inputs used in Level 3 Assets Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Inputs, Level 3 [Member] - Fair Value, Measurements, Recurring [Member] $ in Thousands		6 Months Ended
		Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Mortgage-backed securities [Member]
Mortgage Servicing Rights	[1]		$ 329	$ 397	$ 394	$ 479
Prepayment Rate [Member] | Mortgage-backed securities [Member]
Servicing Asset, Valuation Technique [Extensible List]		us-gaap:ValuationTechniqueDiscountedCashFlowMember		us-gaap:ValuationTechniqueDiscountedCashFlowMember
Mortgage Servicing Rights		$ 329		$ 397
Minimum [Member] | Prepayment Rate [Member]
Mortgage Servicing Rights, Measuring Inputs		9.88
Minimum [Member] | Discount Rate [Member]
Mortgage Servicing Rights, Measuring Inputs		9
Minimum [Member] | Delinquency Rate [Member]
Mortgage Servicing Rights, Measuring Inputs		2.33
Minimum [Member] | Default Rate [Member]
Mortgage Servicing Rights, Measuring Inputs		0.08
Maximum [Member] | Prepayment Rate [Member]
Mortgage Servicing Rights, Measuring Inputs		29.13
Maximum [Member] | Discount Rate [Member]
Mortgage Servicing Rights, Measuring Inputs		9
Maximum [Member] | Delinquency Rate [Member]
Mortgage Servicing Rights, Measuring Inputs		2.90
Maximum [Member] | Default Rate [Member]
Mortgage Servicing Rights, Measuring Inputs		0.14
Weighted Average [Member] | Prepayment Rate [Member]
Mortgage Servicing Rights, Measuring Inputs	[2]	18.57		13.08
Fair value valuation techniques		Prepayment Rate
Weighted Average [Member] | Discount Rate [Member]
Mortgage Servicing Rights, Measuring Inputs	[2]	9		9.50
Fair value valuation techniques		Discount Rate
Weighted Average [Member] | Delinquency Rate [Member]
Mortgage Servicing Rights, Measuring Inputs	[2]	2.47		2.48
Fair value valuation techniques		Delinquency Rate
Weighted Average [Member] | Default Rate [Member]
Mortgage Servicing Rights, Measuring Inputs	[2]	0.12		0.09
Fair value valuation techniques		Default Rate
[1]	Realized and unrealized gains and losses related to mortgage servicing rights are reported as a component of mortgage banking income in the Company’s consolidated statements of income.
[2]	Unobservable inputs for mortgage servicing rights were weighted by loan amount.

Fair Values of Assets and Lia_6

Fair Values of Assets and Liabilities - Assets Measured at Fair Value on Nonrecurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Valuation, Market Approach [Member] | Selling Costs Provision [Member]
Financing Receivable Nonaccrual Fair Value Disclosure	$ 909	$ 996

Fair Values of Assets and Lia_7

Fair Values of Assets and Liabilities - Summarizes Assets Measured at Fair Value on Nonrecurring Basis (Detail) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable Nonaccrual Fair Value Disclosure	$ 909	$ 996
Significant Unobservable Inputs Level 3
Financing Receivable Nonaccrual Fair Value Disclosure	$ 909	$ 996

Fair Values of Assets and Lia_8

Fair Values of Assets and Liabilities - Additional Information (Detail) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Non-financial assets and liabilities measured at fair value on a recurring basis	$ 0
Foreclosed assets	$ 0	$ 0

Fair Values of Assets and Lia_9

Fair Values of Assets and Liabilities - Fair Value Measurements, Recurring and Nonrecurring (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financial Assets:
Cash and due from banks	$ 30,625	$ 4,009
Interest-bearing time deposits with other banks	2,488	2,735
Federal Home Loan Bank stock	2,776	2,971
Bank-owned life insurance	4,292	4,267
Loans, net	378,335	341,980
Accrued interest receivable	1,360	1,235
Financial Liabilities:
Total deposits	330,625	281,616
Advances from Federal Home Loan Bank	51,312	66,219
Advances from Federal Reserve Bank	25,713
Mortgagors’ tax escrow	706	586
Cash And Due From Banks
Other assets:
Assets, Fair Value Disclosure	30,625	4,009
Interest-bearing time deposits with other banks [Member]
Other assets:
Assets, Fair Value Disclosure	2,488	2,735
Federal Home Loan Bank stock [Member]
Other assets:
Assets, Fair Value Disclosure	2,776	2,971
Bank Owned Life Insurance
Other assets:
Assets, Fair Value Disclosure	4,292	4,267
Loans, net [Member]
Other assets:
Assets, Fair Value Disclosure	377,325	336,847
Accrued Interest Receivable
Other assets:
Assets, Fair Value Disclosure	1,360	1,235
Deposits
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	331,080	281,707
Federal Home Loan Bank Borrowings [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	52,897	66,060
Federal Reserve Bank Advances [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	25,713
Mortgagors' tax escrow [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	706	586
Fair Value, Inputs, Level 1 [Member] | Cash And Due From Banks
Other assets:
Assets, Fair Value Disclosure	30,625	4,009
Fair Value, Inputs, Level 1 [Member] | Accrued Interest Receivable
Other assets:
Assets, Fair Value Disclosure	1,360	1,235
Fair Value, Inputs, Level 1 [Member] | Deposits
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	272,576	220,596
Fair Value, Inputs, Level 2 [Member] | Interest-bearing time deposits with other banks [Member]
Other assets:
Assets, Fair Value Disclosure	2,488	2,735
Fair Value, Inputs, Level 2 [Member] | Federal Home Loan Bank stock [Member]
Other assets:
Assets, Fair Value Disclosure	2,776	2,971
Fair Value, Inputs, Level 2 [Member] | Bank Owned Life Insurance
Other assets:
Assets, Fair Value Disclosure	4,292	4,267
Fair Value, Inputs, Level 2 [Member] | Deposits
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	58,504	61,111
Fair Value, Inputs, Level 2 [Member] | Federal Home Loan Bank Borrowings [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	52,897	66,060
Fair Value, Inputs, Level 2 [Member] | Federal Reserve Bank Advances [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	25,713
Fair Value, Inputs, Level 2 [Member] | Mortgagors' tax escrow [Member]
Financial Liabilities:
Financial Liabilities Fair Value Disclosure	706	586
Fair Value, Inputs, Level 3 [Member] | Loans, net [Member]
Other assets:
Assets, Fair Value Disclosure	$ 377,325	$ 336,847