BankGuam Holding (BKGM) 10-Q 13 May 21 2021 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	May 13, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Trading Symbol	BKGM
Entity Registrant Name	BankGuam Holding Co
Entity Central Index Key	0001527383
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		9,714,222
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	000-54483
Entity Tax Identification Number	66-0770448
Entity Address, Address Line One	P.O. Box BW
Entity Address, City or Town	Hagåtña
Entity Address, Country	GU
Entity Address, Postal Zip Code	96932
City Area Code	671
Local Phone Number	472-5300
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	GU
Entity Interactive Data Current	Yes
Title of 12(g) Security	Common Stock, $0.2083 par value per share

Condensed Consolidated Statemen

Condensed Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 44,259	$ 42,875
Interest bearing deposits in banks	277,498	244,753
Total cash and cash equivalents	321,757	287,628
Restricted cash	150	150
Investment in unconsolidated subsidiary	7,256	7,719
Investment securities available-for-sale, at fair value	533,021	510,111
Investment securities held-to-maturity, at amortized cost (Fair Value $42,350 at 3/31/2021 and $46,911 at 12/31/2020)	43,082	46,584
Federal Home Loan Bank stock, at cost	2,814	2,335
Loans, net of allowance for loan losses ($36,283 at 03/31/2021 and $34,805 at 12/31/2020)	1,388,552	1,392,722
Accrued interest receivable	7,379	8,068
Premises and equipment, net	20,083	19,921
Other assets	84,483	77,123
Total assets	2,408,577	2,352,361
Deposits:
Non-interest bearing	778,707	770,037
Interest bearing	1,414,321	1,348,807
Total deposits	2,193,028	2,118,844
Accrued interest payable	70	77
Subordinated debt, net	14,783	14,777
Other liabilities	42,088	41,607
Total liabilities	2,249,969	2,175,305
Commitments and contingencies (Note 6)
Stockholders’ equity:
Common stock $0.2083 par value; 48,000 shares authorized; 9,746 and 9,734 shares issued and 9,714 and 9702 shares outstanding at 3/31/2021 and 12/31/2020, respectively	2,031	2,029
Preferred stock $100 par value; 300 shares authorized; 9.8 shares issued and outstanding	980	980
Additional paid-in capital, Common stock	24,872	24,777
Additional paid-in capital, Preferred stock	8,803	8,803
Retained earnings	139,836	137,646
Accumulated other comprehensive (loss) income	(17,624)	3,111
Common stock in treasury, at cost (32 shares)	(290)	(290)
Total stockholders’ equity	158,608	177,056
Total liabilities and stockholders’ equity	$ 2,408,577	$ 2,352,361

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Investment securities held-to-maturity, Fair Value	$ 42,350	$ 46,911
Loans, net of allowance for loan losses	$ 36,283	$ 34,805
Common stock, par value	$ 0.2083	$ 0.2083
Common stock, shares authorized	48,000,000	48,000,000
Common stock, shares issued	9,746,000	9,734,000
Common stock, shares outstanding	9,714,000	9,702,000
Preferred stock, par value	$ 100	$ 100
Preferred stock, shares authorized	300,000	300,000
Preferred stock, shares issued	9,800	9,800
Preferred stock, shares outstanding	9,800	9,800
Common stock in treasury, shares	32,000	32,000

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income:
Loans	$ 18,247	$ 19,767
Investment securities	2,199	1,974
Deposits with banks	67	358
Total interest income	20,513	22,099
Interest expense:
Savings deposits	103	474
Time deposits	12	18
Other borrowed funds	238	241
Total interest expense	353	733
Net interest income	20,160	21,366
Provision for loan losses	2,475	2,207
Net interest income, after provision for loan losses	17,685	19,159
Non-interest income:
Service charges and fees	1,670	1,738
Gain on sale of investment securities	272
Income from merchant services, net	648	543
Cardholders income, net	253	157
Trustee fees	152	635
Other income	1,214	998
Total non-interest income	4,209	4,071
Non-interest expense:
Salaries and employee benefits	8,696	9,524
Occupancy	2,129	2,156
Equipment and depreciation	2,941	2,972
Insurance	489	474
Telecommunications	366	343
FDIC assessment	344	279
Professional services	565	577
Contract services	621	515
Other real estate owned	14	28
Stationery and supplies	121	200
Training and education	44	185
General, administrative and other	1,540	1,977
Total non-interest expense	17,870	19,230
Income before income taxes	4,024	4,000
Income tax expense	729	755
Net income	3,295	3,245
Preferred stock dividend	(135)	(136)
Net income attributable to common stockholders	$ 3,160	$ 3,109
Earnings per common share (EPS):
Basic and diluted EPS	$ 0.33	$ 0.32
Dividends declared per common share	$ 0.10	$ 0.10
Basic and diluted weighted average common shares	9,705	9,673

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 3,295	$ 3,245
Other comprehensive (loss) income:
Unrealized holding (loss) gain on available-for-sale securities arising during the period, net of tax	(20,488)	4,570
Reclassification for (gain) realized on available-for- sale securities	(272)
Amortization of post-transfer unrealized holding loss on held-to-maturity securities during the period, net of tax	25	73
Total other comprehensive (loss) income	(20,735)	4,643
Total comprehensive (loss) income	$ (17,440)	$ 7,888

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Preferred Stock [Member]	Additional Paid-in Capital - Common [Member]	Additional Paid-in Capital - Preferred [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Treasury Stock [Member]
Beginning Balances at Dec. 31, 2019	$ 164,243	$ 2,023	$ 980	$ 24,478	$ 8,803	$ 129,576	$ (1,327)	$ (290)
Beginning Balance, Shares at Dec. 31, 2019		9,671,556
Net income	3,245					3,245
Change in accumulated other comprehensive income:
Unrealized gain (loss) on available-for-sale securities, net	4,643						4,643
Common stock issued under Employee Stock Purchase Plan & Service Awards	93	$ 2		91
Common stock issued under Employee Stock Purchase Plan & Service Awards, Shares		8,990
Cash dividends on common stock	(967)					(967)
Cash dividends on preferred stock	(136)					(136)
Ending Balances at Mar. 31, 2020	171,121	$ 2,025	980	24,569	8,803	131,718	3,316	(290)
Ending Balance, Shares at Mar. 31, 2020		9,680,546
Beginning Balances at Dec. 31, 2020	177,056	$ 2,029	980	24,777	8,803	137,646	3,111	(290)
Beginning Balance, Shares at Dec. 31, 2020		9,702,136
Net income	3,295					3,295
Change in accumulated other comprehensive income:
Unrealized gain (loss) on available-for-sale securities, net	(20,735)						(20,735)
Common stock issued under Employee Stock Purchase Plan & Service Awards	97	$ 2		95
Common stock issued under Employee Stock Purchase Plan & Service Awards, Shares		11,436
Cash dividends on common stock	(970)					(970)
Cash dividends on preferred stock	(135)					(135)
Ending Balances at Mar. 31, 2021	$ 158,608	$ 2,031	$ 980	$ 24,872	$ 8,803	$ 139,836	$ (17,624)	$ (290)
Ending Balance, Shares at Mar. 31, 2021		9,713,572

Condensed Consolidated Statem_6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 3,295	$ 3,245
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	2,475	2,207
Depreciation	983	1,036
Amortization of debt issuance costs	7	6
Amortization of fees, discounts and premiums	150	260
Proceeds from sales of loans held for sale	10,696	3,416
Origination of loans held for sale	(10,696)	(3,416)
Increase in mortgage servicing rights	(137)	(23)
Gross realized gains on sale of available-for-sale securities	(272)
Realized gain on sale of premises and equipment	6	2
Noncash lease expense	736	681
Net change in operating assets and liabilities:
Accrued interest receivable	689	(854)
Other assets	(7,965)	11,034
Accrued interest payable	(7)	(29)
Lease liability	(652)	1,050
Other liabilities	1,133	1,646
Net cash provided by operating activities	441	20,261
Cash flows from investing activities:
Purchases of available-for-sale securities	(120,138)	(52,599)
Proceeds from sales of available-for-sale securities	46,993
Maturities, prepayments and calls of available-for-sale securities	29,624	49,326
Maturities, prepayments and calls of held-to-maturity securities	3,500	934
Loan originations and principal collections, net	1,695	(23,432)
Income from equity investment in unconsolidated subsidiary	(412)	(244)
Dividends received from unconsolidated subsidiary	875	196
Costs (proceeds) from FHLB stock purchase	(479)	(68)
Proceeds from sales of premises and equipment	7	2
Purchases of premises and equipment	(1,153)	(761)
Net cash used in investing activities	(39,488)	(26,646)
Cash flows from financing activities:
Net increase in deposits	74,184	30,771
Proceeds from issuance of common stock	97	93
Dividends paid	(1,105)	(1,103)
Net cash provided by financing activities	73,176	29,761
Net change in cash, cash equivalents and restricted cash	34,129	23,376
Cash, cash equivalents and restricted cash at beginning of period	287,778	132,116
Cash, cash equivalents and restricted cash at end of period	321,907	155,492
Cash paid during the period for:
Interest	45	403
Income taxes	112	88
Supplemental disclosure of noncash investing and financing activities:
Net change in unrealized loss on held-to-maturity securities, net of tax	25	73
Net change in unrealized gain on available-for-sale securities, net of tax	$ (20,760)	4,570
Other real estate owned transferred from loans, net		$ 42

Nature of Business

Nature of Business	3 Months Ended
	Mar. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature of Business	Note 1 – Nature of Business Organization The accompanying condensed consolidated financial statements include the accounts of BankGuam Holding Company (“Company”) and its wholly-owned subsidiaries, Bank of Guam (“Bank”) and BankGuam Investment Services (“BGIS”). The Company is a Guam corporation organized on October 29, 2010, to act as the holding company of the Bank, a Guam banking corporation, an 18-branch bank serving the communities in Guam, the Commonwealth of the Northern Mariana Islands (CNMI), the Federated States of Micronesia (FSM), the Republic of the Marshall Islands (RMI), the Republic of Palau (ROP), and San Francisco, California. BGIS was incorporated in Guam in 2015 and initially capitalized during the first quarter of 2016. During July 2016, the Company executed an agreement to purchase up to 70% of ASC Trust LLC, formerly ASC Trust Corporation, which has resulted in the Company purchasing 45% of the voting common stock of ASC Trust LLC to date. Other than holding the shares of the Bank, BGIS and ASC Trust LLC, the Company conducts no significant activities, although it is authorized, with the prior approval of its principal regulator, the Board of Governors of the Federal Reserve System (the “Federal Reserve Board”), to engage in a variety of activities related to the business of banking. Currently, substantially all of the Company’s operations are conducted and substantially all of the assets are owned by the Bank, which accounts for substantially all of our consolidated revenues, expenses and operating income. The Bank provides a variety of financial services to individuals, businesses and governments through its branches. The Bank’s headquarters is located in Hagåtña, Guam. The Bank currently has seven branches in Guam, four in the CNMI, four in the FSM, one in the RMI, one in the ROP, and one in San Francisco, California. The Bank’s primary deposit products are demand deposits, savings and time certificate accounts, and its primary lending products are consumer, commercial and real estate loans. Effective January 29, 2021, the Bank permanently closed the Dededo and Harmon branches in Guam. The COVID-19 pandemic has accelerated the adoption of digital channels by our customers, which was considered in our decision to close those branches. For ease of reference we will sometimes refer to the Company and the Bank as “we”, “us” or “our”.

Summary of Significant Accounti

Summary of Significant Accounting Policies and Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and Recent Accounting Pronouncements	Note 2 – Summary of Significant Accounting Policies and Recent Accounting Pronouncements The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all footnotes that would be required for a full presentation of financial condition, results of operations, changes in cash flows and comprehensive income in accordance with generally accepted accounting principles in the United States (“GAAP”). However, these interim financial statements reflect all adjustments (consisting of normal recurring adjustments and accruals) which, in the opinion of our management, are necessary for a fair presentation of our financial condition, results of operations and cash flows for the interim periods presented. These unaudited condensed consolidated financial statements have been prepared on a basis consistent with prior periods, and should be read in conjunction with our audited consolidated financial statements as of and for the year ended December 31, 2020, and the notes thereto, included in our Annual Report on Form 10-K for the year ended December 31, 2020, as filed with the U.S. Securities and Exchange Commission (“SEC”) under the Exchange Act on March 22, 2021. Our condensed consolidated financial condition at March 31, 2021, and the condensed consolidated results of operations for the three months ended March 31, 2021, are not necessarily indicative of what our financial condition will be at December 31, 2021, or of the results of our operations that may be expected for the full year ending December 31, 2021. Use of Estimates The preparation of condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, and the reported amounts of income and expenses during the periods presented. Actual results could differ from those estimates. Restricted Cash Interest-bearing deposits in banks that mature within one year are carried at cost. $150 thousand of these deposits are held by the Bank jointly under the names of Bank of Guam and the Guam Insurance Commissioner, and serve as a bond for the Bank of Guam Trust Department. Leases In February 2016, the FASB issued Accounting Standards Update (“ASU”) 2016-02, “Leases (Topic 842)” COVID-19 On March 11, 2020, the World Health Organization declared the outbreak of a novel coronavirus (“COVID-19”) as a global pandemic, which continues to spread throughout the United States and around the world. The declaration of a global pandemic indicates that almost all public commerce and related business activities may be, to varying degrees, curtailed with the goal of decreasing the rate of new infections. The outbreak of COVID-19 has adversely impacted a broad range of industries in which the Company’s customers operate and, in some instances, impaired their ability to fulfill their financial obligations to the Company. On March 3, 2020, the Federal Open Market Committee reduced the target range for federal funds by 50 basis points to 1.00% - 1.25%. This rate was further reduced to a target range of 0% - 0.25% on March 16, 2020. In September 2020, the Federal Open Market Committee announced that it will allow inflation to exceed 2% to support employment, and forecasted that the federal funds rate would remain unchanged through 2023.These reductions in interest rates and other effects of the COVID-19 outbreak had an adverse affect on the Company’s financial condition and results of operations. As a result of the spread of the COVID-19 coronavirus, economic uncertainties have negatively impacted net interest income and noninterest income. In the United States, the government enacted the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) on March 27, 2020. The CARES Act, among other things, created a $670 billion loan program (the “Paycheck Protection Program” or the “PPP”) for fully guaranteed loans (which may be forgiven) to small businesses for certain qualifying expenses (program dollar amount includes amount approved under the original program in March 2020 and a second tranche which was approved in April 2020). The PPP was modified on June 5, 2020 by the Paycheck Protection Program Flexibility Act of 2020 (the “PPPF Act”) which, among other things, (i) established a minimum maturity of five years for all loans made after the enactment of the PPPF Act and permits an extension of the maturity of existing loans to five years if the borrower and lender agree; and (ii) extended the “covered period” of the CARES Act from June 30, 2020, to December 31, 2020. In July 2020, the CARES Act was amended to extend, through August 8, 2020, the SBA’s authority to make commitments under the PPP. The SBA’s existing authority had previously expired on June 30, 2020. On December 21, 2020, Congress passed a COVID-relief package which was signed by the President on December 27, 2020 and provided additional funding for PPP loans up to March 31, 2021. On January 13, 2021, the SBA re-opened the PPP program and began accepting applications for PPP loans. On March 11, 2021, the American Rescue Plan Act of 2021 (“ARP”) was signed into law. The ARP included a modest increase to PPP, expanded eligibility to more non-profits, a grant program for restaurants that have suffered pandemic-related losses, and extended payroll support for the airline industry. On March 30, 2021, the PPP Extension Act of 2021 was signed into law, which extended the PPP loan program to May 31, 2021. Due to the Company’s concerns for the health and safety of its customers and employees, in March 2020 the Bank temporarily closed seven of its branches in Guam and one of its branches in the CNMI, and limited the number of customers allowed to be in its remaining facilities at any one time to 50. During 2020, the Bank re-opened four of its branches in Guam, while four of the branches remain closed. Recently Adopted Accounting Pronouncements None. Recently Issued but Not Yet Adopted Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326)” The Company was preparing to implement ASU 2016-13 when it was scheduled to become effective January 1, 2020, but the FASB announced on October 16, 2019, a delay of the effective date for smaller reporting companies until January 1, 2023. Management expects to recognize a one-time cumulative effect adjustment to the allowance for loan losses as of the first reporting period in which the new standard is effective, but cannot yet estimate the magnitude of the adjustment or the overall impact of the new guidance on the Company’s financial position, results of operations or cash flows. In March 2020, the FASB issued ASU 2020-04, " Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2021
Earnings Per Share Pro Forma [Abstract]
Earnings Per Common Share	Note 3 – Earnings Per Common Share Basic earnings per common share represent income available to common stockholders divided by the weighted-average number of common shares outstanding during the period. Potential common shares that may be issued by the Company relate to shares subscribed but not yet issued in 2021 and 2020 under the Employee Stock Purchase Plan, and are reported as dilutive options. No shares were subscribed but not issued at March 31, 2021, and 2020. Earnings per common share are computed based on reported net income, preferred stock dividends and the following common share data: Three Months Ended March 31, 2021 2020 Net income $ 3,295 $ 3,245 Less preferred stock dividends (135 ) (136 ) Net income attributable to common stockholders 3,160 3,109 Weighted average number of common shares outstanding - used to calculate basic and diluted earnings per common share 9,705 9,673 Earnings per common share (EPS): Basic and diluted EPS $ 0.33 $ 0.32

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2021
Investments Debt And Equity Securities [Abstract]
Investment Securities	Note 4 – Investment Securities The amortized cost and fair value of investment securities, with gross unrealized gains and losses, follows: March 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Securities Available-for-Sale U.S. government agency and government sponsored enterprise (GSE) debt securities $ 385,366 $ - $ (24,818 ) $ 360,548 U.S. government agency pool securities 26,456 5 (154 ) 26,307 U.S. government agency or GSE residential mortgage-backed securities 143,502 3,071 (407 ) 146,166 Total $ 555,324 $ 3,076 $ (25,379 ) $ 533,021 Securities Held-to-Maturity U.S. government agency and government sponsored enterprise (GSE) debt securities $ 31,244 $ 15 $ (897 ) $ 30,362 U.S. government agency pool securities 4,062 14 (54 ) 4,022 U.S. government agency or GSE residential mortgage-backed securities 7,776 210 (20 ) 7,966 Total $ 43,082 $ 239 $ (971 ) $ 42,350 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Securities Available-for-Sale U.S. government agency and government sponsored enterprise (GSE) debt securities $ 300,440 $ 54 $ (2,348 ) $ 298,146 U.S. government agency pool securities 28,783 29 (206 ) 28,606 U.S. government agency or GSE residential mortgage-backed securities 176,912 6,447 - 183,359 Total $ 506,135 $ 6,530 $ (2,554 ) $ 510,111 Securities Held-to-Maturity U.S. government agency and government sponsored enterprise (GSE) debt securities $ 33,221 $ 93 $ (15 ) $ 33,299 U.S. government agency pool securities 4,515 15 (36 ) 4,494 U.S. government agency or GSE residential mortgage-backed securities 8,848 280 (10 ) 9,118 Total $ 46,584 $ 388 $ (61 ) $ 46,911 At March 31, 2021, and December 31, 2020, investment securities with a carrying value of $403.3 million and $360.6 million, respectively, were pledged to secure various government deposits and to meet other public requirements. Proceeds and gross realized gains from the sales of available-for-sale investment securities for the three months ended March 31, 2021, and 2020, are shown below. Three Months Ended March 31, 2021 2020 Proceeds from sales $ 46,993 $ - Gross realized gains from sales $ 272 $ - The amortized cost and estimated fair value of investment securities by contractual maturity at March 31, 2021, and December 31, 2020, are shown below. Actual maturities may differ from contractual maturities because issuers may have the right to call or borrowers the right to prepay obligations with or without call or prepayment penalties. At March 31, 2021, obligations of U.S. government corporations and agencies with amortized costs totaling $598.4 million consist predominantly of residential mortgage-backed securities totaling $151.3 million and Small Business Administration agency pool securities totaling $30.5 million whose contractual maturity, or principal repayment, will follow the repayment of the underlying small business loans or mortgages. For purposes of the following table, the entire outstanding balance of these mortgage-backed securities issued by U.S. government corporations and agencies and SBA pools is categorized based on final maturity date. At March 31, 2021, the Bank estimates the average remaining life of these mortgage-backed securities and SBA pools to be approximately 3.5 years and 3.6 years, respectively. March 31, 2021 Available-for-Sale Held-to-Maturity Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Due within one year $ 26 $ 26 $ 9,995 $ 10,009 Due after one but within five years 5,132 5,122 2,123 2,154 Due after five but within ten years 183,763 178,597 25,033 24,238 Due after ten years 366,403 349,276 5,931 5,949 Total $ 555,324 $ 533,021 $ 43,082 $ 42,350 December 31, 2020 Available-for-Sale Held-to-Maturity Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Due within one year $ 5,115 $ 5,121 $ 11,990 $ 12,070 Due after one but within five years 13,255 13,432 2,325 2,358 Due after five but within ten years 129,708 131,340 26,214 26,348 Due after ten years 358,057 360,218 6,055 6,135 Total $ 506,135 $ 510,111 $ 46,584 $ 46,911 Temporarily Impaired Securities The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2021, and December 31, 2020. March 31, 2021 Less Than Twelve Months More Than Twelve Months Total Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Securities Available for Sale U.S. government agency and government sponsored enterprise (GSE) debt securities $ (24,818 ) $ 360,548 $ - $ - $ (24,818 ) $ 360,548 U.S. government agency pool securities (7 ) 4,203 (147 ) 21,174 (154 ) 25,377 U.S. government agency or GSE residential mortgage-backed securities (407 ) 33,884 - - (407 ) 33,884 Total $ (25,232 ) $ 398,635 $ (147 ) $ 21,174 $ (25,379 ) $ 419,809 Securities Held to Maturity US government agency and sponsored Agencies (GSE) debt securities $ (897 ) $ 20,353 $ - $ - $ (897 ) $ 20,353 U.S. government agency pool securities - - (54 ) 2,522 (54 ) 2,522 U.S. government agency or GSE residential mortgage-backed securities (10 ) 547 (10 ) 481 (20 ) 1,028 Total $ (907 ) $ 20,900 $ (64 ) $ 3,003 $ (971 ) $ 23,903 December 31, 2020 Less Than Twelve Months More Than Twelve Months Total Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Securities Available for Sale U.S. government agency and government sponsored enterprise (GSE) debt securities $ (2,348 ) $ 243,089 $ - $ - $ (2,348 ) $ 243,089 U.S. government agency pool securities (22 ) 3,735 (184 ) 22,672 (206 ) 26,407 Total $ (2,370 ) $ 246,824 $ (184 ) $ 22,672 $ (2,554 ) $ 269,496 Securities Held to Maturity U.S. government agency and government sponsored enterprise (GSE) debt securities $ (15 ) $ 14,985 $ - $ - $ (15 ) $ 14,985 U.S. government agency pool securities - - (36 ) 2,923 (36 ) 2,923 U.S. government agency or GSE residential mortgage-backed securities (10 ) 506 - - (10 ) 506 Total $ (25 ) $ 15,491 $ (36 ) $ 2,923 $ (61 ) $ 18,414 The investment securities that were in an unrealized loss position as of March 31, 2021, which comprised a total of 108 securities were not other-than-temporarily impaired. Specifically, the 108 securities are comprised of the following: 36 Small Business Administration Pool securities, 1 mortgage-backed security issued by Government National Mortgage Association, 26 agency securities issued by Federal Home Loan Bank (FHLB), 22 agency securities issued by Federal Home Loan Mortgage Corporation (FHLMC), 4 mortgaged-backed securities and 1 agency security issued by Federal National Mortgage Association (FNMA), and 18 agency securities issued by Federal Farm Credit Banks (FFCB). Total gross unrealized losses were primarily attributable to changes in market interest rates, relative to when the investment securities were purchased, and not due to any change in the credit quality of the investment securities. The Company does not intend to sell the investment securities that were in an unrealized loss position and it is not likely that the Company will be required to sell the investment securities before recovery of their amortized cost, which may be at maturity. However, the Company may elect to sell certain investment securities with an unrealized loss position in its “available for sale” portfolio as needed to replenish its liquidity. Investment in Unconsolidated Subsidiary On July 1, 2019, with the approval of the Federal Reserve Bank of San Francisco, the Company used $4.1 million of the proceeds from the subordinated notes totaling $15.0 million that were issued on June 27, 2019, to acquire an additional 20% of the voting common stock of ASC Trust LLC at the second closing, pursuant to the Stock Purchase Agreement (the “Agreement”) dated May 27, 2016, between the Company and David J. John, as amended to date. This transaction brought the Company’s non-controlling interest in ASC Trust LLC to 45%. The Company’s Chief Executive Officer serves on the Board of Directors of ASC Trust LLC. Another of the Company’s Board members also serves as a non-minority voting member of an entity that owns 10% of the common stock of ASC Trust LLC. The Agreement provides for the acquisition of an additional 25% of the stock of ASC Trust LLC, originally in April 2021, which has been revised to July 2021, with the future purchase subject to regulatory approval. The Agreement contains customary warranties, representations and indemnification provisions.

Loans Held for Sale, Loans and

Loans Held for Sale, Loans and Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Loans Held for Sale, Loans and Allowance for Loan Losses	Note 5 – Loans Held for Sale, Loans and Allowance for Loan Losses Loans Held for Sale In its normal course of business, the Bank originates mortgage loans held for sale to the FHLMC. The Bank has elected to measure its residential mortgage loans held for sale at cost. Origination fees and costs are recognized in earnings at the time of origination. Loans are sold to FHLMC at par. During the three months ended March 31, 2021, the Bank originated and sold $10.7 million in FHLMC mortgage loans. During the three months ended March 31, 2020, the Bank originated and sold $3.4 million in FHLMC loans. Mortgage loans serviced for others are not included in the accompanying condensed consolidated statements of financial condition. The unpaid principal balances of mortgage loans serviced for others were $190.9 million at March 31, 2021, and $186.9 million at December 31, 2020. The increase of $4.0 million (2.2%) during the three months ended March 31, 2021, was due to new loans, partially offset by the principal paydowns and payoffs during the period. We retain mortgage servicing rights on mortgage loans that we sell. Such rights represent the net positive cash flows generated from the servicing of such mortgage loans and we recognize such rights as assets on our statements of financial condition based on their estimated fair values. We receive servicing fees, less any subservicing costs, on the unpaid principal balances of such mortgage loans. Those fees are collected from the monthly payments made by the mortgagors or from the proceeds of the sale or foreclosure and liquidation of the underlying real property collateralizing the loans. At March 31, 2021, and December 31, 2020, mortgage servicing rights totaled $1.8 million and $1.7 million, respectively, and are included in other assets in the accompanying condensed consolidated statements of financial condition. The Bank accounts for mortgage servicing rights at fair value with changes in fair value recorded as a part of service fees and charges in the condensed consolidated statements of income. Loans Outstanding loan balances are presented net of unearned income, deferred loan fees, and unamortized discount and premium totaling $3.8 million at March 31, 2021, and $4.2 million at December 31, 2020. As of March 31, 2021, our 10 largest borrowing relationships totaled $342.0 million in commitments, or approximately 23.9% of our total gross loans compared to $345.0 million, or approximately 24.1% at December 31, 2020. Loans subject to ASC Topic 310-30, “Loans and Debt Securities Acquired with Deteriorated Credit Quality,” The loan portfolio consisted of the following at: March 31, 2021 December 31, 2020 Amount Percent Amount Percent Commercial Commercial & industrial $ 364,031 25.5 % $ 366,942 25.6 % Commercial mortgage 718,302 50.3 % 685,138 47.9 % Commercial construction 31,500 2.2 % 51,785 3.6 % Commercial agriculture 620 0.0 % 629 0.0 % Total commercial 1,114,453 78.0 % 1,104,494 77.1 % Consumer Residential mortgage 127,352 8.9 % 127,371 8.9 % Home equity 2,156 0.1 % 2,076 0.1 % Automobile 19,573 1.4 % 19,923 1.4 % Other consumer loans 1 165,073 11.6 % 177,822 12.5 % Total consumer 314,154 22.0 % 327,192 22.9 % Gross loans 1,428,607 100.0 % 1,431,686 100.0 % Deferred loan (fees) costs, net (3,772 ) (4,159 ) Allowance for loan losses (36,283 ) (34,805 ) Loans, net $ 1,388,552 $ 1,392,722 1 Comprised of other revolving credit, installment loans, and overdrafts. Paycheck Protection Program With the passage of the Paycheck Protection Program, or PPP, administered by the Small Business Administration, the Bank is actively participating in assisting its customers with applications for resources through the program. PPP loans have either a two-year or a five-year term and earn interest at 1%. The Bank believes that the majority of these loans will ultimately be forgiven by the SBA in accordance with the terms of the program. In 2020, the Bank approved and funded over $93.4 million in PPP loans. At March 31, 2021, the outstanding principal balance of PPP loans was at $89.2 million. Currently, a total of $48.5 million in PPP loans have been forgiven, of which $40.8 million were forgiven in 2021 and $7.7 million in 2020. On January 13, 2021, the SBA re-opened the PPP program and began accepting applications for PPP loans. As of May 7, 2021, the Bank has approved and funded over $45.5 million in additional PPP loans. It is the Bank’s understanding that loans funded through the PPP program are fully guaranteed by the U.S. government. Should those circumstances change, the Bank could be required to establish additional allowance for loan loss through additional credit loss expense charged to earnings. Allowance for Loan Losses The allowance for loan losses is evaluated on a quarterly basis by Bank management, and is based upon management’s periodic review of the collectability of loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral, and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available or conditions change. The allowance consists of allocated and general components. The allocated component relates to loans that are classified as impaired. ASC 310-10 defines an impaired loan as one for which there is uncertainty concerning collection of all principal and interest per the original contractual terms of the loan. For those loans that are classified as impaired, an allowance is established when the discounted cash flow (or the collateral value or the observable market price) of the impaired loan is lower than the carrying value of the loan. The general component covers unimpaired loans, and is estimated using a loss migration analysis based on historical charge-off experience and expected loss, given the default probability derived from the Bank’s internal risk rating process. The loss migration analysis tracks twelve rolling quarters of loan loss history and industry loss factors to determine historical losses by classification category for each loan type, except certain consumer loans. These calculated loss factors are then applied to outstanding loan balances for all non-impaired loans. Additionally, a qualitative factor that is determined utilizing external economic factors and internal assessments is applied to each homogeneous loan pool. We also conduct individual loan review analyses, as part of the allowance for loan loss allocation process, applying specific monitoring policies and procedures in analyzing the existing loan portfolio. In the three months ended March 31, 2021, management adjusted the economic risk factors to incorporate the current economic implications, which include reduced tourism and higher unemployment due to the COVID-19 pandemic. Set forth below is a summary of the Bank’s activity in the allowance for loan losses during the three months ended March 31, 2021, and 2020, and the year ended December 31, 2020: Three Months Ended March 31, 2021 Three Months Ended March 31, 2020 Year Ended December 31, 2020 Balance, beginning of period $ 34,805 $ 27,870 $ 27,870 Charged off loans (1,595 ) (1,492 ) (5,628 ) Recoveries on loans previously charged off 598 480 2,205 Provision for loan losses 2,475 2,207 10,358 Balance, end of period $ 36,283 $ 29,065 $ 34,805 Set forth below is information regarding loan balances and the related allowance for loan losses, by portfolio type, for the three months ended March 31, 2021, and 2020, and the year ended December 31, 2020, respectively. Commercial Residential Mortgages Consumer Total (Dollars in thousands) Three Months Ended March 31, 2021 Allowance for loan losses: Balance at beginning of period $ 21,213 $ 1,990 $ 11,602 $ 34,805 Charge-offs (77 ) (4 ) (1,514 ) (1,595 ) Recoveries 124 - 474 598 Provision 1,259 210 1,006 2,475 Balance at end of period $ 22,519 $ 2,196 $ 11,568 $ 36,283 Allowance balance at end of period related to: Loans individually evaluated for impairment $ 3,502 $ 1 $ 1,578 $ 5,081 Loans collectively evaluated for impairment 19,017 2,195 9,990 31,202 Ending balance $ 22,519 $ 2,196 $ 11,568 $ 36,283 Loan balances at end of period: Loans individually evaluated for impairment $ 60,538 $ 2,349 $ 1,716 $ 64,603 Loans collectively evaluated for impairment 1,053,915 127,159 182,930 1,364,004 Ending balance $ 1,114,453 $ 129,508 $ 184,646 $ 1,428,607 Three Months Ended March 31, 2020 Allowance for loan losses: Balance at beginning of period $ 18,360 $ 1,490 $ 8,020 $ 27,870 Charge-offs - - (1,492 ) (1,492 ) Recoveries 5 - 475 480 Provision 1,223 402 582 2,207 Ending balance $ 19,588 $ 1,892 $ 7,585 $ 29,065 Allowance balance at end of period related to: Loans individually evaluated for impairment $ 4,156 $ 2 $ 396 $ 4,554 Loans collectively evaluated for impairment 15,432 1,890 7,189 24,511 Ending balance $ 19,588 $ 1,892 $ 7,585 $ 29,065 Loan balances at end of period: Loans individually evaluated for impairment $ 33,916 $ 4,416 $ 415 $ 38,747 Loans collectively evaluated for impairment 938,084 122,805 228,625 1,289,514 Ending balance $ 972,000 $ 127,221 $ 229,040 $ 1,328,261 Year Ended December 31, 2020 Allowance for loan losses: Balance at beginning of year $ 18,360 $ 1,490 $ 8,020 $ 27,870 Charge-offs (1,069 ) - (4,559 ) (5,628 ) Recoveries 399 - 1,806 2,205 Provision 3,523 500 6,335 10,358 Ending balance $ 21,213 $ 1,990 $ 11,602 $ 34,805 Allowance balance at end of year related to: Loans individually evaluated for impairment $ 3,500 $ 4 $ 1,264 $ 4,768 Loans collectively evaluated for impairment 17,713 1,986 10,338 30,037 Ending balance $ 21,213 $ 1,990 $ 11,602 $ 34,805 Loan balances at end of year: Loans individually evaluated for impairment $ 36,031 $ 2,730 $ 1,343 $ 40,104 Loans collectively evaluated for impairment 1,068,463 126,717 196,402 1,391,582 Ending balance $ 1,104,494 $ 129,447 $ 197,745 $ 1,431,686 Credit Quality The following table provides a summary of the delinquency status of the Bank’s loans by portfolio type: 30-59 Days Past Due 60-89 Days Past Due 90 Days and Greater Non- Accrual 90 Days and Greater Still Accruing Total Past Due Current Total Loans Outstanding March 31, 2021 Commercial Commercial & industrial $ 4,527 $ 1,656 $ 7,926 $ 13 $ 14,122 $ 349,909 $ 364,031 Commercial mortgage 435 817 34,289 830 36,371 681,931 718,302 Commercial construction - - - - - 31,500 31,500 Commercial agriculture - - - - - 620 620 Total commercial 4,962 2,473 42,215 843 50,493 1,063,960 1,114,453 Consumer Residential mortgage 5,847 1,422 970 121 8,360 118,992 127,352 Home equity - - - - - 2,156 2,156 Automobile 474 62 - 63 599 18,974 19,573 Other consumer 1 2,345 1,412 78 1,454 5,289 159,784 165,073 Total consumer 8,666 2,896 1,048 1,638 14,248 299,906 314,154 Total $ 13,628 $ 5,369 $ 43,263 $ 2,481 $ 64,741 $ 1,363,866 $ 1,428,607 December 31, 2020 Commercial Commercial & industrial $ 13,712 $ 3,857 $ 8,119 $ 387 $ 26,075 $ 340,867 $ 366,942 Commercial mortgage 9,183 36,562 913 471 47,129 638,009 685,138 Commercial construction - - - - - 51,785 51,785 Commercial agriculture - - - - - 629 629 Total commercial 22,895 40,419 9,032 858 73,204 1,031,290 1,104,494 Consumer Residential mortgage 4,758 1,833 1,147 129 7,867 119,504 127,371 Home equity - - - - - 2,076 2,076 Automobile 580 184 - 43 807 19,116 19,923 Other consumer 1 3,472 1,502 108 1,096 6,178 171,644 177,822 Total consumer 8,810 3,519 1,255 1,268 14,852 312,340 327,192 Total $ 31,705 $ 43,938 $ 10,287 $ 2,126 $ 88,056 $ 1,343,630 $ 1,431,686 1 Comprised of other revolving credit, installment loans, and overdrafts. Generally, the accrual of interest on a loan is discontinued when principal or interest payments become more than 90 days past due, unless management believes the loan is adequately collateralized and is in the process of collection, with the exception of automobile and other consumer loans which, rather than being placed on non-accrual status, are charged off once they become 120 days delinquent. When a loan is placed on non-accrual status, previously accrued but unpaid interest is reversed against current income. Subsequent collections of cash are applied as principal reductions when received, except when the ultimate collectability of principal is probable, in which case interest payments are credited to income. Non-accrual loans may be restored to accrual status when in receipt of six consecutive payments, and principal and interest become current and full repayment is expected. The following table provides information as of March 31, 2021, and December 31, 2020, with respect to loans on non-accrual status, by portfolio type: March 31, 2021 December 31, 2020 (Dollars in thousands) Non-accrual loans: Commercial Commercial & industrial $ 8,279 $ 8,750 Commercial mortgage 35,978 6,618 Total commercial 44,257 15,368 Consumer Residential mortgage $ 2,203 $ 2,575 Other consumer 1 193 196 Total consumer 2,396 2,771 Total non-accrual loans $ 46,653 $ 18,139 1 Comprised of other revolving credit, installment loans, and overdrafts. Credit Quality Indicators The Bank uses several credit quality indicators to manage credit risk, including an internal credit risk rating system that categorizes loans into pass, special mention, substandard, formula classified, doubtful or loss categories. Credit risk ratings are applied individually to those classes of loans that have significant or unique credit characteristics and that benefit from a case-by-case evaluation. These are typically loans to businesses or individuals in the classes which comprise the commercial portfolio segment. Groups of loans that are underwritten and structured using standardized criteria and characteristics, such as statistical models (e.g., credit scoring or payment performance), are typically risk-rated and monitored collectively. These are typically loans to individuals in the classes which comprise the consumer portfolio segment. The following are the definitions of the Bank’s credit quality indicators: Pass (A): Exceptional: Essentially risk-free credit. These are loans of the highest quality that pose virtually no risk of loss to the Bank. This includes loans fully collateralized by means of a savings account(s) and time certificate(s) of deposit, and by at least 110% of the loan amount. Borrowers should have strong financial statements, good liquidity and excellent credit. Pass (B): Standard: Multiple, strong sources of repayment. These are loans to borrowers with a demonstrated history of financial and managerial performance. The risk of loss is considered to be low. Loans are well-structured, with clearly identified primary and readily available secondary sources of repayment. These loans may be secured by an equal amount of funds in a savings account or time certificate of deposit. These loans may also be secured by marketable collateral whose value can be reasonably determined through outside appraisals. The borrower characteristically has well supported cash flows and low leverage. Pass (C): Acceptable: Good primary and secondary sources of repayment. These are loans to borrowers of average financial condition, stability and management expertise. The borrower should be a well-established individual or company with adequate financial resources to withstand short-term fluctuations in the marketplace. The borrower’s financial ratios and trends are favorable. The loans may be unsecured or supported by non-real estate collateral for which the value is more difficult to determine, represent a reasonable credit risk and require an average amount of account officer attention. The borrower’s ability to repay unsecured credit is to be of unquestionable strength. Pass (D): Monitor: Sufficient primary sources of repayment and an acceptable secondary source of repayment. Acceptable business or individual credit, but the borrower’s operations, cash flows or financial conditions carry average levels of risk. These loans are considered to be collectable in full, but may require a greater-than-average amount of loan officer monitoring. Borrowers are capable of absorbing normal setbacks without failing to meet the terms of the loan agreement. Special Mention: A Special Mention asset has potential weaknesses that deserve a heightened degree of monitoring. These potential weaknesses may result in a deterioration of the repayment prospects for the asset or in the institution’s credit position at some future date. Special Mention assets are not adversely classified and do not expose an institution to sufficient risk to warrant adverse classification. The Special Mention classification should neither be a compromise between a pass grade and substandard, nor should it be a “catch all” grade to identify any loan that has a policy exception. Substandard: A Substandard asset is inadequately protected by the current sound worth and payment capacity of the obligor or the collateral pledged. Assets so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. Assets classified as substandard are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Formula Classified: Formula Classified loans are all loans and credit cards delinquent 90 days and over which have yet to be formally classified Special Mention, Substandard or Doubtful by the Bank’s Loan Committee. In most instances, the monthly formula total is comprised primarily of residential real estate loans, consumer loans, credit cards and commercial loans under $250 thousand. However, commercial loans are typically formally classified by the Loan Committee no later than their 90-day delinquency, and those do not become part of the formula classification. Real estate loans 90-days delinquent that are in the foreclosure process, which is typically completed within another 60 days, are not formally classified during this period. Doubtful: A loan with weaknesses well enough defined that eventual repayment in full, on the basis of currently existing facts, conditions and values, is highly questionable, even though certain factors may be present which could improve the status of the loan. The probability of some loss is extremely high, but because of certain known factors that may work to the advantage of strengthening of the assets (i.e. capital injection, perfecting liens on additional collateral, refinancing plans, etc.), its classification as an estimated loss is deferred until its more exact status can be determined. Loss: Loans classified as “Loss” are considered uncollectible, and are either unsecured or are supported by collateral that is of little to no value. As such, their continuance as recorded assets is not warranted. While this classification does not mandate that a loan has no ultimate recovery value, losses should be taken in the period during which these loans are deemed to be uncollectible. Loans identified as loss are immediately approved for charge-off. The Bank may refer loans to outside collection agencies, attorneys, or its internal collection division to continue collection efforts. Any subsequent recoveries are credited to the Allowance for Loan Losses. The Bank classifies its loan portfolios using internal credit quality ratings, as discussed above under Allowance for Loan Losses March 31, 2021 December 31, 2020 (Dollars in thousands) Pass: Commercial & industrial $ 305,540 $ 314,201 Commercial mortgage 656,824 626,477 Commercial construction 31,500 51,785 Commercial agriculture 620 629 Residential mortgage 123,394 123,017 Home equity 2,156 2,076 Automobile 19,509 19,880 Other consumer 163,420 176,522 Total pass loans $ 1,302,963 $ 1,314,587 Special Mention: Commercial & industrial $ 21,500 $ 6,643 Commercial mortgage 15,736 16,285 Residential mortgage 1,679 1,695 Total special mention loans $ 38,915 $ 24,623 Substandard: Commercial & industrial $ 29,065 $ 37,920 Commercial mortgage 45,020 41,654 Residential mortgage 93 433 Other consumer 6 7 Total substandard loans $ 74,184 $ 80,014 Formula Classified: Residential mortgage $ 2,186 $ 2,226 Automobile 64 43 Other consumer 1,647 1,293 Total formula classified loans $ 3,897 $ 3,562 Doubtful: Commercial & industrial $ 7,926 $ 8,178 Commercial mortgage 722 722 Total doubtful loans $ 8,648 $ 8,900 Total outstanding loans, gross $ 1,428,607 $ 1,431,686 Impaired Loans A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal and interest when due according to the original contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impaired loans include loans that are in non-accrual status and other loans that have been modified in Troubled Debt Restructurings (TDRs), where economic concessions have been granted to borrowers experiencing financial difficulties. These concessions typically result from the Bank’s loss mitigation actions, and could include reductions in the interest rate, payment extensions, forbearance, or other actions taken with the intention of maximizing collections. Impairment is measured on a loan-by-loan basis for commercial and real estate loans by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price, or the fair value of the collateral (if the loan is collateral-dependent). Large groups of smaller-balance homogeneous loans, such as consumer loans, are collectively evaluated for impairment. Impairment reserves for these groups of consumer loans are determined using historical loss given default rates for similar loans. The following table sets forth information regarding non-accrual loans and restructured loans, at March 31, 2021, and December 31, 2020: March 31, 2021 December 31, 2020 (Dollars in thousands) Impaired loans: Restructured loans: Non-accruing restructured loans $ 4,703 $ 4,718 Accruing restructured loans 15,438 15,937 Total restructured loans 20,141 20,655 Other impaired loans 44,462 19,450 Total impaired loans $ 64,603 $ 40,105 Impaired loans less than 90 days delinquent and included in total impaired loans $ 18,709 $ 27,664 The table below contains additional information with respect to impaired loans, by portfolio type, at March 31, 2021, and December 31, 2020: Recorded Investment Unpaid Principal Balance Average Recorded Investment Interest Income Recognized (Dollars in thousands) March 31, 2021, With no related allowance recorded: Commercial & industrial $ 22,621 $ 22,621 $ 5,655 $ 95 Commercial mortgage 37,810 38,058 9,453 19 Residential mortgage 92 92 23 - Other consumer 6 6 1 - Total impaired loans with no related allowance $ 60,529 $ 60,777 $ 15,132 $ 114 March 31, 2021, With a related allowance recorded: Commercial & industrial $ 71 $ 71 $ 18 $ 1 Commercial mortgage 36 51 9 - Residential mortgage 2,257 2,266 564 (25 ) Automobile 14 14 4 1 Other consumer 1,696 1,696 424 24 Total impaired loans with a related allowance $ 4,074 $ 4,098 $ 1,019 $ 1 December 31, 2020, With no related allowance recorded: Commercial & industrial $ 23,745 $ 23,745 $ 23,986 $ 102 Commercial mortgage 11,954 12,201 9,030 45 Residential mortgage 432 432 692 - Other consumer 7 7 7 - Total impaired loans with no related allowance $ 36,138 $ 36,385 $ 33,715 $ 147 December 31, 2020, With a related allowance recorded: Commercial & industrial $ 294 $ 607 $ 282 $ 4 Commercial mortgage 39 54 95 - Residential mortgage 2,298 2,308 2,887 (27 ) Automobile 43 43 71 - Other consumer 1,293 1,292 884 27 Total impaired loans with a related allowance $ 3,967 $ 4,304 $ 4,219 $ 4 Troubled Debt Restructurings In accordance with FASB’s Accounting Standards Update No. 2011-02, “A Creditor’s Determination of Whether a Restructuring is a Troubled Debt Restructuring” The CARES Act provided guidance around the modification of loans as a result of the COVID-19 pandemic, which outlined, among other criteria, that short-term modifications made on a good faith basis to borrowers who were current as defined by the CARES Act prior to any relief, are not TDRs. This includes short-term (e.g. six months) modifications such as payment deferrals, fee waivers, extensions of repayment terms, or other delays in payment that are insignificant. Borrowers are considered current under the CARES Act if they are less than 30 days past due on their contractual payments at the time a modification program is implemented. Additional information regarding performing and nonperforming TDRs at March 31, 2021, and December 31, 2020, is set forth in the following table: Number of Pre- Modification Outstanding Recorded Principal Post- Modification Outstanding Recorded Outstanding Balance Loans Investment Modifications Investment March 31, 2021 December 31, 2020 Performing Residential mortgage - $ - $ - $ - $ - $ - Commercial & industrial 7 16,880 - 16,880 14,400 - Commercial mortgage 3 1,048 - 1,048 1,038 15,936 Total performing 10 $ 17,928 $ - $ 17,928 $ 15,438 $ 15,936 Nonperforming Commercial & industrial 1 $ 176 $ - $ 176 $ 108 $ - Commercial mortgage 8 7,897 - 7,897 4,548 4,671 Consumer 1 49 - 49 47 48 Total nonperforming 10 $ 8,122 $ - $ 8,122 $ 4,703 $ 4,719 Total Troubled Debt Restructurings (TDRs) 20 $ 26,050 $ - $ 26,050 $ 20,141 $ 20,655 Principal modification includes principal forgiveness at the time of modification, contingent principal forgiveness granted over the life of the loan based on borrower performance. In an effort to constructively work with borrowers affected by the COVID-19 pandemic, the Bank initiated a temporary program in March 2020 to allow for 90-day deferrals for residential mortgage and commercial loans upon request from the borrower, and a 90-day deferral for all consumer and automobile loans. The Bank did not identify these loans that were deferred and were over 30 days delinquent as TDRs. The Bank identified a specific reserve for consumer loans totaling $4.3 million at March 31, 2021. The Bank also increased its environmental factors for the reserve to account for the effects of the COVID-19 pandemic. There were no defaults on troubled debt restructurings following the modification during the three months ended March 31, 2021 and 2020. The Bank has one significant borrowing relationship in bankruptcy totaling $7.9 million at March 31, 2021. The Bank has calculated a specific reserve within the allowance for this borrowing relationship in bankruptcy in the amount of $3.5 million, and believes it has sufficient collateral for the remaining amount. As a result, the Bank’s management believes that at March 31, 2021, there is sufficient coverage to protect the Bank’s exposure to this relationship.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 6 – Commitments and Contingencies The Bank is involved in certain legal actions and claims that arise in the ordinary course of business. Management believes that, as a result of its legal defenses and insurance arrangements, none of these matters is expected to have a material adverse effect on the Bank’s, BGIS’s or the Company’s financial condition, results of operations or cash flows.

Regulatory Capital Requirements

Regulatory Capital Requirements	3 Months Ended
	Mar. 31, 2021
Banking Regulation [Abstract]
Regulatory Capital Requirements	Note 7 – Regulatory Capital Requirements The Bank is subject to various regulatory capital requirements administered by the United States federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Bank’s, BGIS’s and the Company’s condensed consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific capital guidelines that involve quantitative measures of their assets, liabilities and certain off-balance-sheet items, as calculated under regulatory accounting practices. Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and ratios (set forth in the following table) of Total and Tier 1 capital (as defined in the regulations) to risk weighted assets (as defined) and of Tier 1 capital (as defined) to average assets (as defined). As of March 31, 2021, and December 31, 2020, the Bank met all capital adequacy requirements to which it is subject. As of March 31, 2021, the Bank’s capital ratios each exceeded the Federal Deposit Insurance Corporation’s well capitalized standards under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum Total risk-based, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the following table. There are no conditions or events since the Bank’s last regulatory examination that management believes have changed the Bank’s category. The Bank continues to receive a large influx of deposits from the federal relief programs due to the COVID-19 pandemic resulting in an increase of approximately $109.8 million in its average assets at March 31, 2021 to $2.43 billion from $2.32 billion in December 31, 2020, which had an adverse impact on its ratio of Tier 1 capital to average assets. Management believes that the Bank has the capacity to absorb the growth in total assets, and the tools needed to move deposits off of its balance sheet through its Trust services to continue to be above the well capitalized standards under the regulatory framework for prompt corrective action. The Company’s actual capital amounts and ratios as of March 31, 2021, and December 31, 2020, are presented in the table below. Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio At March 31, 2021: Total capital (to Risk Weighted Assets) $ 209,035 14.228 % $ 117,536 8.000 % $ 146,920 10.000 % Tier 1 capital (to Risk Weighted Assets) $ 175,448 11.942 % $ 88,152 6.000 % $ 117,536 8.000 % Tier 1 capital (to Average Assets) $ 175,448 7.223 % $ 97,156 4.000 % $ 121,444 5.000 % Common Equity Tier 1 Capital (to Risk Weighted Assets) $ 165,666 11.276 % $ 66,114 4.500 % $ 95,498 6.500 % At December 31, 2020: Total capital (to Risk Weighted Assets) $ 206,381 14.307 % $ 115,401 8.000 % $ 144,252 10.000 % Tier 1 capital (to Risk Weighted Assets) $ 173,141 12.003 % $ 86,551 6.000 % $ 115,401 8.000 % Tier 1 capital (to Average Assets) $ 173,141 7.466 % $ 92,765 4.000 % $ 115,956 5.000 % Common Equity Tier 1 Capital (to Risk Weighted Assets) $ 163,359 11.325 % $ 64,913 4.500 % $ 93,764 6.500 %

Off-Balance-Sheet Activities

Off-Balance-Sheet Activities	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Off-Balance-Sheet Activities	Note 8 – Off-Balance-Sheet Activities The Bank is a party to credit-related financial instruments with off-balance-sheet risk to meet the financing needs of its customers in the normal course of business. These financial instruments include commitments to extend credit, standby letters of credit, and commercial letters of credit. Such commitments involve, to varying degrees, elements of credit and interest rate risk in addition to the amount reflected in the condensed consolidated financial statements. The Bank’s exposure to credit loss, in the event of nonperformance by the other parties to financial instruments for loan commitments and letters of credit, is represented by the contractual amount of these instruments. The Bank follows the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments. A summary of financial instruments with off-balance-sheet risk at March 31, 2021, and December 31, 2020, is as follows: March 31, 2021 December 31, 2020 Commitments to extend credit $ 174,683 $ 159,405 Letters of credit: Standby letters of credit $ 52,046 $ 52,827 Commercial letters of credit 2,565 2,574 Total $ 54,611 $ 55,401 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The commitments for some lines of credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if it is deemed necessary by the Bank upon extension of credit, is based on management’s credit evaluation of the customer. Commercial and standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party or the shipment of merchandise from a third party. These letters of credit are primarily issued to support public and private borrowing arrangements. The majority of all letters of credit issued have expiration dates within one year. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers, and similar credit underwriting standards are applied. The Bank generally holds collateral supporting those commitments. The Bank considers its standby and other letters of credit to be payment guarantees. At March 31, 2021, the maximum undiscounted future payments that the Bank could be required to make for all outstanding letters of credit were $54.6 million. All of these arrangements mature within one year. The Bank has recourse to recover from the customer any amounts paid under these guarantees. Most of the guarantees are fully collateralized; however, several are unsecured. The Bank had recorded $44 thousand in reserve liabilities associated with these guarantees at March 31, 2021.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Note 9 – Income Taxes We record an amount equal to the tax credits, tax loss carry-forwards and tax deductions (“tax benefits”) that we believe will be available to offset or reduce the amounts of income taxes in future periods as a deferred tax asset on our condensed consolidated statements of financial condition. Under applicable federal and state income tax laws and regulations in the United States, such tax benefits will expire if not used within specified periods of time. Accordingly, the ability to fully use the deferred tax asset depends on the amount of taxable income that we generate during those time periods. At least once each year, or more frequently if warranted, we make an estimates of future taxable income that we believe we are likely to generate during those future periods. If we conclude, on the basis of those estimates and the amount of the tax benefits available to us, that it is more likely than not that we will be able to fully utilize those tax benefits prior to their expiration, we recognize the deferred tax asset in full on our balance sheet. On the other hand, if we conclude on the basis of those estimates and the amount of the tax benefits available to us that it has become more likely than not that we will be unable to utilize those tax benefits in full prior to their expiration, then we would establish a (or increase any existing) valuation allowance to reduce the deferred tax asset on our balance sheet to the amount which we believe we are more likely than not to be able to utilize. Such a reduction is implemented by recognizing a non-cash charge that would have the effect of increasing the provision, or reducing any credit, for income taxes that we would otherwise have recorded in our condensed consolidated statements of income. The determination of whether and the extent to which we will be able to utilize our deferred tax asset involves significant management judgments and assumptions that are subject to period-to-period changes as a result of changes in tax laws, changes in the market, or economic conditions that could affect our operating results or variances between our actual operating results and our projected operating results, as well as other factors. A valuation allowance of $528 thousand and $1.3 million has been provided at March 31, 2021, and December 31, 2020, respectively, to reduce the deferred tax asset because, in management’s opinion, it is more likely than not that less than the entire amount will be realized. The portion of the deferred tax asset with valuation allowance is attributable to a cumulative net operating loss carry forward from the Bank’s CNMI operations, which losses management anticipates will continue. The charge from the net operating loss has already been realized in the accompanying condensed consolidated statements of income as a result of the Guam income tax code. The difference between the effective income tax expense and the income tax expense computed at the Guam statutory rate of 21% was due to nontaxable interest income earned on loans to the Government of Guam. In addition to filing a federal income tax return in Guam, the Bank files income tax returns in the CNMI and the State of California. The Bank is no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2012.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 10 – Fair Value Measurements The Bank uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In accordance with ASC Topic 820 “Fair Value Measurements and Disclosures” Fair Value Hierarchy In accordance with the guidance of ASC Topic 820, the Bank groups its financial assets and financial liabilities generally measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. Level 1: Valuation is based on quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 1 assets and liabilities generally include debt and equity securities that are traded in an active exchange market, as well as certain U.S. Treasury securities that are highly liquid and are actively traded in over-the-counter markets. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities. Level 2: Valuation is based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. The valuation may be based on quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability. Level 3: Valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which determination of fair value requires significant management judgment or estimation. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Financial assets measured at fair value on a recurring basis as of March 31, 2021, and December 31, 2020, are as follows: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total At March 31, 2021 U.S. treasury notes and bonds $ - $ - $ - $ - U.S. government agency and government sponsored enterprise (GSE) debt securities - 360,548 - 360,548 U.S. government agency pool securities - 26,307 - 26,307 U.S. government agency or GSE - 146,166 - 146,166 Total fair value of available-for-sale securities - 533,021 - 533,021 Other assets: MSRs - - 1,820 1,820 Total fair value $ - $ 533,021 $ 1,820 $ 534,841 At December 31, 2020 U.S. treasury notes and bonds $ 5,005 $ - $ - $ 5,005 U.S. government agency and government sponsored enterprise (GSE) debt securities - 293,142 - 293,142 U.S. government agency pool securities - 28,606 - 28,606 U.S. government agency or GSE - 183,358 - 183,358 Total fair value of available-for-sale securities 5,005 505,106 - 510,111 Other assets: MSRs - - 1,683 1,683 Total fair value $ 5,005 $ 505,106 $ 1,683 $ 511,794 There were no liabilities measured at fair value on a recurring basis as of March 31, 2021, and December 31, 2020. For the periods ended March 31, 2021, and December 31, 2020, the changes in Level 3 assets measured at fair value on a recurring basis are as follows: March 31, 2021 December 31, 2020 Beginning balance $ 1,683 $ 1,704 Realized and unrealized net losses: Included in net income 137 (21 ) Ending balance $ 1,820 $ 1,683 The valuation technique used for Level 3 mortgage servicing rights (“MSRs”) is their discounted cash flow. Inputs considered in determining Level 3 pricing include the anticipated prepayment rates, discount rates, and cost to service. Significant increases or decreases in any of those inputs in isolation would result in a significantly lower or higher fair value measurement. The following table presents quantitative information about the valuation technique and unobservable inputs applied to Level 3 fair value measurements for financial instruments measured at fair value on a recurring basis: Estimated Fair Value Valuation Technique Unobservable Inputs Range of Inputs Weighted Average Rate March 31, 2021 Financial instrument: MSRs $ 1,820 Discounted Cash Flow Discount Rate 6.06% - 7.74% 6.30% Weighted Average Prepayment Rate (Public Securities Association) 125% December 31, 2020 Financial instrument: MSRs $ 1,683 Discounted Cash Flow Discount Rate 6.06% - 7.74% 6.30% Weighted Average Prepayment Rate (Public Securities Association) 125% There were no transfers into or out of the Bank’s Level 3 financial instruments for the periods ended March 31, 2021, and December 31, 2020. Nonrecurring Fair Value Measurements Under certain circumstances, the Bank makes adjustments to fair value for assets and liabilities even though they are not measured at fair value on an ongoing basis. The Bank did not have any financial instruments carried on the consolidated statements of financial condition by caption and by level in fair value hierarchy for a nonrecurring change in fair value at March 31, 2021, and December 31, 2020, respectively. The fair value of loans subject to write downs is estimated using the appraised value of the underlying collateral, discounted as necessary due to management’s estimates of changes in economic conditions. Additionally, the Bank also makes adjustments to nonfinancial assets and liabilities even though they are not measured at fair value on an ongoing basis. The Bank does not The following methods and assumptions were used by the Bank in estimating fair value disclosures for financial instruments: Cash and Cash Equivalents The carrying amount of cash and short-term instruments approximates fair value based on the short-term nature of the assets. Interest-Bearing Deposits in Banks Fair values for other interest-bearing deposits are estimated using discounted cash flow analyses based on current interest rates or yields for similar types of deposits. Federal Home Loan Bank Stock The Bank is a member of the FHLB of Des Moines. As a member, we are required to own stock of the FHLB, the amount of which is based primarily on the level of our borrowings from that institution. We also have the right to acquire additional shares of stock in the FHLB; however, to date, we have not done so. It is not practicable to determine the fair value of FHLB stock due to restrictions placed on its transferability. Investment Securities When quoted prices are available in an active market, the Bank classifies the securities within Level 1 of the valuation hierarchy. Level 1 securities include U.S. Treasury notes and bonds. If quoted market prices are not available, the Bank estimates fair values using pricing models and discounted cash flows that consider standard input factors such as observable market data, benchmark yields, interest rate volatilities, broker/dealer quotes, and credit spreads. Examples of such instruments, which would generally be classified within Level 2 of the valuation hierarchy, include U.S. GSE obligations, U.S. government agency pool securities, and other securities. Mortgage-backed securities are included in Level 2 if observable inputs are available. In certain cases where there is limited activity or less transparency around inputs to the valuation, the Bank would classify those securities in Level 3. At March 31, 2021, and December 31, 2020, the Bank did not have any Level 3 investment securities. Loans For variable-rate loans that re-price frequently and with no significant change in credit risk, fair values are based on carrying values. Fair values for other loans are estimated using discounted cash flow analyses, based upon interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. Fair values for nonperforming loans are estimated using discounted cash flow analyses or underlying collateral values, where applicable. Loans are classified in Level 3. Mortgage Servicing Rights The fair value of MSRs is determined using models which depend on estimates of prepayment rates, discount rates and costs to service. MSRs are classified in Level 3. Deposit Liabilities The fair values disclosed for demand deposits (for example, interest and non-interest checking, passbook savings and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (that is, their carrying amounts). Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies current market interest rates on comparable instruments to a schedule of aggregated expected monthly maturities on time deposits. Deposit liabilities are classified in Level 3. Short-Term Borrowings The carrying amounts of federal funds purchased and FHLB advances maturing within ninety days approximate their fair values. We had no outstanding short-term borrowings at March 31, 2021, and December 31, 2020. Long-Term Borrowings The fair value of FHLB advances maturing after ninety days is determined based on expected present value techniques using current market interest rates for advances with similar terms and remaining maturities. We had no outstanding long-term borrowings at March 31, 2021, and December 31, 2020. Accrued Interest The carrying amount of accrued interest approximates fair value. Off-Balance Sheet Commitments and Contingent Liabilities Management does not believe it is practicable to provide an estimate of fair value for off-balance sheet commitments or contingent liabilities because of the uncertainty involved in attempting to assess the likelihood and timing of a commitment being drawn upon, coupled with a lack of an established market for these instruments and the wide diversity of fee structures. Fair Value of Other Financial Instruments The estimated fair values of the Bank’s financial instruments, excluding those assets recorded at fair value on a recurring basis on the Bank’s condensed consolidated statements of financial condition, are as follows: Estimated fair value Carrying Amount Level 1 Level 2 Level 3 (Dollars in thousands) March 31, 2021 Financial assets: Cash and cash equivalents $ 321,757 $ 321,757 $ - $ - Restricted cash 150 150 - - Federal Home Loan Bank stock 2,814 - 2,814 - Investment securities held-to-maturity 43,082 - 42,350 - Loans, net 1,388,552 - - 1,436,167 Total $ 1,756,355 $ 321,907 $ 45,164 $ 1,436,167 Financial liabilities: Deposits 2,193,028 - - 2,212,655 Total $ 2,193,028 $ - $ - $ 2,212,655 December 31, 2020 Financial assets: Cash and cash equivalents $ 287,628 $ 287,628 $ - $ - Restricted cash 150 150 - - Federal Home Loan Bank stock 2,335 - 2,335 - Investment securities held-to-maturity 46,584 - 46,911 - Loans, net 1,392,722 - - 1,441,402 Total $ 1,729,419 $ 287,778 $ 49,246 $ 1,441,402 Financial liabilities: Deposits $ 2,118,844 $ - $ - $ 2,130,361 Total $ 2,118,844 $ - $ - $ 2,130,361

Comprehensive Income (Loss)

Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2021
Comprehensive Income Net Of Tax [Abstract]
Comprehensive Income (Loss)	Note 11 – Comprehensive Income (Loss) The components of accumulated other comprehensive income (loss), included in stockholders’ equity, are as follows: March 31, 2021 December 31, 2020 Net unrealized (loss) gain on available-for-sale securities $ (22,031 ) $ 4,241 Amounts reclassified from AOCI for (gain) on sale of investment securities available-for-sale included in net income (272 ) (265 ) Tax effect 4,684 (835 ) Unrealized holding (loss) gain on available-for-sale securities, net of tax (17,619 ) 3,141 Gross unrealized holding loss on held-to-maturity securities (30 ) (285 ) Amortization of unrealized holding loss on held-to-maturity during the period 25 255 Unrealized holding loss on held-to-maturity securities (5 ) (30 ) Accumulated other comprehensive (loss) income $ (17,624 ) $ 3,111

Leases

Leases	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Leases	Note 12 – Leases The Bank leases certain land, office spaces, and storage spaces. Leases with an initial term of 12 months or less are not recorded on the balance sheet. Instead, the Bank recognizes lease expense for these leases on a straight-line basis over the lease term. Most leases include one or more options to renew, with renewal terms that can extend the lease term from one to 50 years or more. The exercise of lease renewal options is at our sole discretion. The depreciable life of assets and leasehold improvements are limited by the expected lease terms, unless there is a transfer of title or purchase option reasonably certain of exercise. Certain of our lease agreements include rental payments based on a percentage of the prevailing market value of the lease and the average of the Treasury Bill Rate and the Guam Consumer Price Index figure, and others include rental payments adjusted periodically for inflation. The Bank's lease agreements do not contain any material residual value guarantees or material restrictive covenants. The Bank leases certain facilities from two separate entities in which two of its directors have separate ownership interests. Lease payments made to these entities during the three months ended March 31, 2021 and 2020, approximated $62 thousand and $59 thousand, respectively. Additionally, the Bank leases office space to third parties, with original lease terms ranging from 1 to 3 years with option periods ranging up to 12 years. At March 31, 2021, minimum future rents to be received under non-cancelable operating sublease agreements were $43 thousand, $38 thousand, and $26 thousand for the periods ending December 31, 2021, 2022, and 2023, respectively. The cash flow from operating leases included in the measurement of lease liabilities during the three months ended March 31, 2021 and 2020, were $887 thousand and $876 thousand, respectively. The following table summarizes the lease-related assets and liabilities recorded as part of other assets and other liabilities, respectively, in our condensed consolidated statements of financial condition at March 31, 2021, and December 31, 2020: March 31, 2021 December 31, 2020 Assets Operating lease right-of-use assets $ 25,377 $ 26,113 Total lease assets $ 25,377 $ 26,113 Liabilities Current Operating $ 2,391 $ 2,510 Noncurrent Operating 23,579 24,112 Total lease liabilities $ 25,970 $ 26,622 The operating lease costs and variable lease costs were $971 thousand and $935 thousand during the three months ended March 31, 2021 and 2020, respectively. The following table provides the maturities of lease liabilities at March 31, 2021: Operating Leases (a) Total 2021 $ 2,545 $ 2,545 2022 2,780 2,780 2023 2,532 2,532 2024 2,420 2,420 2025 2,288 2,288 After 2025 35,569 35,569 Total lease payments $ 48,134 $ 48,134 Less: Interest (b) 22,164 22,164 Present value of lease liabilities (c) $ 25,970 $ 25,970 Note: For leases commencing prior to 2019, minimum lease payments exclude payments to landlords for real estate taxes and common area maintenance. (a) Operating lease payments include $21.5 million related to options to extend lease terms that are reasonably certain of being exercised. (b) Calculated using the incremental borrowing rate based on the lease term for each lease. (c) Includes the current portion of $2.4 million for operating leases. The following table provides the weighted-average lease term and discount rate at March 31, 2021: March 31, 2021 December 31, 2020 Weighted-average remaining lease term (years) Operating leases 24.8 24.6 Weighted-average discount rate Operating leases 4.10 % 4.09 %

Subordinated Debt

Subordinated Debt	3 Months Ended
	Mar. 31, 2021
Subordinated Borrowings [Abstract]
Subordinated Debt	Note 13 – Subordinated Debt On June 27, 2019, the Company issued $15.0 million in aggregate principal amount of its 6.35% Fixed-to-Floating Rate Subordinated Notes due June 30, 2029 (the “Notes”). The Notes have a ten-year term and initially bear interest at a fixed annual rate of 6.35%. Beginning June 30, 2024, the interest rate will reset quarterly to the then-current three-month LIBOR plus 466 basis points. The Company is required to pay interest only semi-annually during the fixed period, and quarterly during the floating rate period. The principal sum of the Notes plus any unpaid interest are due on the maturity date. The Notes are unsecured, subordinated obligations of the Company only and are not obligations of, and are not guaranteed by, any subsidiary of the Company. The Notes rank junior in right to payment to the Company’s current and future senior indebtedness.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements, and the reported amounts of income and expenses during the periods presented. Actual results could differ from those estimates.
Restricted Cash	Restricted Cash Interest-bearing deposits in banks that mature within one year are carried at cost. $150 thousand of these deposits are held by the Bank jointly under the names of Bank of Guam and the Guam Insurance Commissioner, and serve as a bond for the Bank of Guam Trust Department.
Leases	Leases In February 2016, the FASB issued Accounting Standards Update (“ASU”) 2016-02, “Leases (Topic 842)”
COVID-19	COVID-19 On March 11, 2020, the World Health Organization declared the outbreak of a novel coronavirus (“COVID-19”) as a global pandemic, which continues to spread throughout the United States and around the world. The declaration of a global pandemic indicates that almost all public commerce and related business activities may be, to varying degrees, curtailed with the goal of decreasing the rate of new infections. The outbreak of COVID-19 has adversely impacted a broad range of industries in which the Company’s customers operate and, in some instances, impaired their ability to fulfill their financial obligations to the Company. On March 3, 2020, the Federal Open Market Committee reduced the target range for federal funds by 50 basis points to 1.00% - 1.25%. This rate was further reduced to a target range of 0% - 0.25% on March 16, 2020. In September 2020, the Federal Open Market Committee announced that it will allow inflation to exceed 2% to support employment, and forecasted that the federal funds rate would remain unchanged through 2023.These reductions in interest rates and other effects of the COVID-19 outbreak had an adverse affect on the Company’s financial condition and results of operations. As a result of the spread of the COVID-19 coronavirus, economic uncertainties have negatively impacted net interest income and noninterest income. In the United States, the government enacted the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) on March 27, 2020. The CARES Act, among other things, created a $670 billion loan program (the “Paycheck Protection Program” or the “PPP”) for fully guaranteed loans (which may be forgiven) to small businesses for certain qualifying expenses (program dollar amount includes amount approved under the original program in March 2020 and a second tranche which was approved in April 2020). The PPP was modified on June 5, 2020 by the Paycheck Protection Program Flexibility Act of 2020 (the “PPPF Act”) which, among other things, (i) established a minimum maturity of five years for all loans made after the enactment of the PPPF Act and permits an extension of the maturity of existing loans to five years if the borrower and lender agree; and (ii) extended the “covered period” of the CARES Act from June 30, 2020, to December 31, 2020. In July 2020, the CARES Act was amended to extend, through August 8, 2020, the SBA’s authority to make commitments under the PPP. The SBA’s existing authority had previously expired on June 30, 2020. On December 21, 2020, Congress passed a COVID-relief package which was signed by the President on December 27, 2020 and provided additional funding for PPP loans up to March 31, 2021. On January 13, 2021, the SBA re-opened the PPP program and began accepting applications for PPP loans. On March 11, 2021, the American Rescue Plan Act of 2021 (“ARP”) was signed into law. The ARP included a modest increase to PPP, expanded eligibility to more non-profits, a grant program for restaurants that have suffered pandemic-related losses, and extended payroll support for the airline industry. On March 30, 2021, the PPP Extension Act of 2021 was signed into law, which extended the PPP loan program to May 31, 2021. Due to the Company’s concerns for the health and safety of its customers and employees, in March 2020 the Bank temporarily closed seven of its branches in Guam and one of its branches in the CNMI, and limited the number of customers allowed to be in its remaining facilities at any one time to 50. During 2020, the Bank re-opened four of its branches in Guam, while four of the branches remain closed.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements None.
Recently Issued but Not Yet Adopted Accounting Pronouncements	Recently Issued but Not Yet Adopted Accounting Pronouncements In June 2016, the FASB issued ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326)” The Company was preparing to implement ASU 2016-13 when it was scheduled to become effective January 1, 2020, but the FASB announced on October 16, 2019, a delay of the effective date for smaller reporting companies until January 1, 2023. Management expects to recognize a one-time cumulative effect adjustment to the allowance for loan losses as of the first reporting period in which the new standard is effective, but cannot yet estimate the magnitude of the adjustment or the overall impact of the new guidance on the Company’s financial position, results of operations or cash flows. In March 2020, the FASB issued ASU 2020-04, " Reference Rate Reform (Topic 848), Facilitation of the Effects of Reference Rate Reform on Financial Reporting
Fair Value Measurements	The Bank uses fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. In accordance with ASC Topic 820 “Fair Value Measurements and Disclosures” Fair Value Hierarchy In accordance with the guidance of ASC Topic 820, the Bank groups its financial assets and financial liabilities generally measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. Level 1: Valuation is based on quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 1 assets and liabilities generally include debt and equity securities that are traded in an active exchange market, as well as certain U.S. Treasury securities that are highly liquid and are actively traded in over-the-counter markets. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities. Level 2: Valuation is based on inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. The valuation may be based on quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability. Level 3: Valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets and liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which determination of fair value requires significant management judgment or estimation. A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2021
Earnings Per Share Pro Forma [Abstract]
Summary of Earnings Per Common Share	Earnings per common share are computed based on reported net income, preferred stock dividends and the following common share data: Three Months Ended March 31, 2021 2020 Net income $ 3,295 $ 3,245 Less preferred stock dividends (135 ) (136 ) Net income attributable to common stockholders 3,160 3,109 Weighted average number of common shares outstanding - used to calculate basic and diluted earnings per common share 9,705 9,673 Earnings per common share (EPS): Basic and diluted EPS $ 0.33 $ 0.32

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2021
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost and Fair Value of Investment Securities, with Gross Unrealized Gains and Losses	The amortized cost and fair value of investment securities, with gross unrealized gains and losses, follows: March 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Securities Available-for-Sale U.S. government agency and government sponsored enterprise (GSE) debt securities $ 385,366 $ - $ (24,818 ) $ 360,548 U.S. government agency pool securities 26,456 5 (154 ) 26,307 U.S. government agency or GSE residential mortgage-backed securities 143,502 3,071 (407 ) 146,166 Total $ 555,324 $ 3,076 $ (25,379 ) $ 533,021 Securities Held-to-Maturity U.S. government agency and government sponsored enterprise (GSE) debt securities $ 31,244 $ 15 $ (897 ) $ 30,362 U.S. government agency pool securities 4,062 14 (54 ) 4,022 U.S. government agency or GSE residential mortgage-backed securities 7,776 210 (20 ) 7,966 Total $ 43,082 $ 239 $ (971 ) $ 42,350 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Estimated Fair Value Securities Available-for-Sale U.S. government agency and government sponsored enterprise (GSE) debt securities $ 300,440 $ 54 $ (2,348 ) $ 298,146 U.S. government agency pool securities 28,783 29 (206 ) 28,606 U.S. government agency or GSE residential mortgage-backed securities 176,912 6,447 - 183,359 Total $ 506,135 $ 6,530 $ (2,554 ) $ 510,111 Securities Held-to-Maturity U.S. government agency and government sponsored enterprise (GSE) debt securities $ 33,221 $ 93 $ (15 ) $ 33,299 U.S. government agency pool securities 4,515 15 (36 ) 4,494 U.S. government agency or GSE residential mortgage-backed securities 8,848 280 (10 ) 9,118 Total $ 46,584 $ 388 $ (61 ) $ 46,911
Summary of Proceeds and Gross Realized Gains from Sales of Available-for-sale Investment Securities	Proceeds and gross realized gains from the sales of available-for-sale investment securities for the three months ended March 31, 2021, and 2020, are shown below. Three Months Ended March 31, 2021 2020 Proceeds from sales $ 46,993 $ - Gross realized gains from sales $ 272 $ -
Summary of Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity	The amortized cost and estimated fair value of investment securities by contractual maturity at March 31, 2021, and December 31, 2020, are shown below. Actual maturities may differ from contractual maturities because issuers may have the right to call or borrowers the right to prepay obligations with or without call or prepayment penalties. At March 31, 2021, obligations of U.S. government corporations and agencies with amortized costs totaling $598.4 million consist predominantly of residential mortgage-backed securities totaling $151.3 million and Small Business Administration agency pool securities totaling $30.5 million whose contractual maturity, or principal repayment, will follow the repayment of the underlying small business loans or mortgages. For purposes of the following table, the entire outstanding balance of these mortgage-backed securities issued by U.S. government corporations and agencies and SBA pools is categorized based on final maturity date. At March 31, 2021, the Bank estimates the average remaining life of these mortgage-backed securities and SBA pools to be approximately 3.5 years and 3.6 years, respectively. March 31, 2021 Available-for-Sale Held-to-Maturity Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Due within one year $ 26 $ 26 $ 9,995 $ 10,009 Due after one but within five years 5,132 5,122 2,123 2,154 Due after five but within ten years 183,763 178,597 25,033 24,238 Due after ten years 366,403 349,276 5,931 5,949 Total $ 555,324 $ 533,021 $ 43,082 $ 42,350 December 31, 2020 Available-for-Sale Held-to-Maturity Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Due within one year $ 5,115 $ 5,121 $ 11,990 $ 12,070 Due after one but within five years 13,255 13,432 2,325 2,358 Due after five but within ten years 129,708 131,340 26,214 26,348 Due after ten years 358,057 360,218 6,055 6,135 Total $ 506,135 $ 510,111 $ 46,584 $ 46,911
Summary of Gross Unrealized Losses and Fair Value of Investments, with Unrealized Losses of Temporarily Impaired Securities	The following table shows the gross unrealized losses and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2021, and December 31, 2020. March 31, 2021 Less Than Twelve Months More Than Twelve Months Total Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Securities Available for Sale U.S. government agency and government sponsored enterprise (GSE) debt securities $ (24,818 ) $ 360,548 $ - $ - $ (24,818 ) $ 360,548 U.S. government agency pool securities (7 ) 4,203 (147 ) 21,174 (154 ) 25,377 U.S. government agency or GSE residential mortgage-backed securities (407 ) 33,884 - - (407 ) 33,884 Total $ (25,232 ) $ 398,635 $ (147 ) $ 21,174 $ (25,379 ) $ 419,809 Securities Held to Maturity US government agency and sponsored Agencies (GSE) debt securities $ (897 ) $ 20,353 $ - $ - $ (897 ) $ 20,353 U.S. government agency pool securities - - (54 ) 2,522 (54 ) 2,522 U.S. government agency or GSE residential mortgage-backed securities (10 ) 547 (10 ) 481 (20 ) 1,028 Total $ (907 ) $ 20,900 $ (64 ) $ 3,003 $ (971 ) $ 23,903 December 31, 2020 Less Than Twelve Months More Than Twelve Months Total Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Securities Available for Sale U.S. government agency and government sponsored enterprise (GSE) debt securities $ (2,348 ) $ 243,089 $ - $ - $ (2,348 ) $ 243,089 U.S. government agency pool securities (22 ) 3,735 (184 ) 22,672 (206 ) 26,407 Total $ (2,370 ) $ 246,824 $ (184 ) $ 22,672 $ (2,554 ) $ 269,496 Securities Held to Maturity U.S. government agency and government sponsored enterprise (GSE) debt securities $ (15 ) $ 14,985 $ - $ - $ (15 ) $ 14,985 U.S. government agency pool securities - - (36 ) 2,923 (36 ) 2,923 U.S. government agency or GSE residential mortgage-backed securities (10 ) 506 - - (10 ) 506 Total $ (25 ) $ 15,491 $ (36 ) $ 2,923 $ (61 ) $ 18,414

Loans Held for Sale, Loans an_2

Loans Held for Sale, Loans and Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Loan Portfolio	The loan portfolio consisted of the following at: March 31, 2021 December 31, 2020 Amount Percent Amount Percent Commercial Commercial & industrial $ 364,031 25.5 % $ 366,942 25.6 % Commercial mortgage 718,302 50.3 % 685,138 47.9 % Commercial construction 31,500 2.2 % 51,785 3.6 % Commercial agriculture 620 0.0 % 629 0.0 % Total commercial 1,114,453 78.0 % 1,104,494 77.1 % Consumer Residential mortgage 127,352 8.9 % 127,371 8.9 % Home equity 2,156 0.1 % 2,076 0.1 % Automobile 19,573 1.4 % 19,923 1.4 % Other consumer loans 1 165,073 11.6 % 177,822 12.5 % Total consumer 314,154 22.0 % 327,192 22.9 % Gross loans 1,428,607 100.0 % 1,431,686 100.0 % Deferred loan (fees) costs, net (3,772 ) (4,159 ) Allowance for loan losses (36,283 ) (34,805 ) Loans, net $ 1,388,552 $ 1,392,722 1 Comprised of other revolving credit, installment loans, and overdrafts.
Activity of Allowance for Loan Losses	Set forth below is a summary of the Bank’s activity in the allowance for loan losses during the three months ended March 31, 2021, and 2020, and the year ended December 31, 2020: Three Months Ended March 31, 2021 Three Months Ended March 31, 2020 Year Ended December 31, 2020 Balance, beginning of period $ 34,805 $ 27,870 $ 27,870 Charged off loans (1,595 ) (1,492 ) (5,628 ) Recoveries on loans previously charged off 598 480 2,205 Provision for loan losses 2,475 2,207 10,358 Balance, end of period $ 36,283 $ 29,065 $ 34,805
Loan Balances and Related Allowance for Loan Losses, by Portfolio Type	Set forth below is information regarding loan balances and the related allowance for loan losses, by portfolio type, for the three months ended March 31, 2021, and 2020, and the year ended December 31, 2020, respectively. Commercial Residential Mortgages Consumer Total (Dollars in thousands) Three Months Ended March 31, 2021 Allowance for loan losses: Balance at beginning of period $ 21,213 $ 1,990 $ 11,602 $ 34,805 Charge-offs (77 ) (4 ) (1,514 ) (1,595 ) Recoveries 124 - 474 598 Provision 1,259 210 1,006 2,475 Balance at end of period $ 22,519 $ 2,196 $ 11,568 $ 36,283 Allowance balance at end of period related to: Loans individually evaluated for impairment $ 3,502 $ 1 $ 1,578 $ 5,081 Loans collectively evaluated for impairment 19,017 2,195 9,990 31,202 Ending balance $ 22,519 $ 2,196 $ 11,568 $ 36,283 Loan balances at end of period: Loans individually evaluated for impairment $ 60,538 $ 2,349 $ 1,716 $ 64,603 Loans collectively evaluated for impairment 1,053,915 127,159 182,930 1,364,004 Ending balance $ 1,114,453 $ 129,508 $ 184,646 $ 1,428,607 Three Months Ended March 31, 2020 Allowance for loan losses: Balance at beginning of period $ 18,360 $ 1,490 $ 8,020 $ 27,870 Charge-offs - - (1,492 ) (1,492 ) Recoveries 5 - 475 480 Provision 1,223 402 582 2,207 Ending balance $ 19,588 $ 1,892 $ 7,585 $ 29,065 Allowance balance at end of period related to: Loans individually evaluated for impairment $ 4,156 $ 2 $ 396 $ 4,554 Loans collectively evaluated for impairment 15,432 1,890 7,189 24,511 Ending balance $ 19,588 $ 1,892 $ 7,585 $ 29,065 Loan balances at end of period: Loans individually evaluated for impairment $ 33,916 $ 4,416 $ 415 $ 38,747 Loans collectively evaluated for impairment 938,084 122,805 228,625 1,289,514 Ending balance $ 972,000 $ 127,221 $ 229,040 $ 1,328,261 Year Ended December 31, 2020 Allowance for loan losses: Balance at beginning of year $ 18,360 $ 1,490 $ 8,020 $ 27,870 Charge-offs (1,069 ) - (4,559 ) (5,628 ) Recoveries 399 - 1,806 2,205 Provision 3,523 500 6,335 10,358 Ending balance $ 21,213 $ 1,990 $ 11,602 $ 34,805 Allowance balance at end of year related to: Loans individually evaluated for impairment $ 3,500 $ 4 $ 1,264 $ 4,768 Loans collectively evaluated for impairment 17,713 1,986 10,338 30,037 Ending balance $ 21,213 $ 1,990 $ 11,602 $ 34,805 Loan balances at end of year: Loans individually evaluated for impairment $ 36,031 $ 2,730 $ 1,343 $ 40,104 Loans collectively evaluated for impairment 1,068,463 126,717 196,402 1,391,582 Ending balance $ 1,104,494 $ 129,447 $ 197,745 $ 1,431,686
Summary of Delinquency Status of Loans	The following table provides a summary of the delinquency status of the Bank’s loans by portfolio type: 30-59 Days Past Due 60-89 Days Past Due 90 Days and Greater Non- Accrual 90 Days and Greater Still Accruing Total Past Due Current Total Loans Outstanding March 31, 2021 Commercial Commercial & industrial $ 4,527 $ 1,656 $ 7,926 $ 13 $ 14,122 $ 349,909 $ 364,031 Commercial mortgage 435 817 34,289 830 36,371 681,931 718,302 Commercial construction - - - - - 31,500 31,500 Commercial agriculture - - - - - 620 620 Total commercial 4,962 2,473 42,215 843 50,493 1,063,960 1,114,453 Consumer Residential mortgage 5,847 1,422 970 121 8,360 118,992 127,352 Home equity - - - - - 2,156 2,156 Automobile 474 62 - 63 599 18,974 19,573 Other consumer 1 2,345 1,412 78 1,454 5,289 159,784 165,073 Total consumer 8,666 2,896 1,048 1,638 14,248 299,906 314,154 Total $ 13,628 $ 5,369 $ 43,263 $ 2,481 $ 64,741 $ 1,363,866 $ 1,428,607 December 31, 2020 Commercial Commercial & industrial $ 13,712 $ 3,857 $ 8,119 $ 387 $ 26,075 $ 340,867 $ 366,942 Commercial mortgage 9,183 36,562 913 471 47,129 638,009 685,138 Commercial construction - - - - - 51,785 51,785 Commercial agriculture - - - - - 629 629 Total commercial 22,895 40,419 9,032 858 73,204 1,031,290 1,104,494 Consumer Residential mortgage 4,758 1,833 1,147 129 7,867 119,504 127,371 Home equity - - - - - 2,076 2,076 Automobile 580 184 - 43 807 19,116 19,923 Other consumer 1 3,472 1,502 108 1,096 6,178 171,644 177,822 Total consumer 8,810 3,519 1,255 1,268 14,852 312,340 327,192 Total $ 31,705 $ 43,938 $ 10,287 $ 2,126 $ 88,056 $ 1,343,630 $ 1,431,686 1 Comprised of other revolving credit, installment loans, and overdrafts.
Loans on Non-Accrual Status, by Portfolio	The following table provides information as of March 31, 2021, and December 31, 2020, with respect to loans on non-accrual status, by portfolio type: March 31, 2021 December 31, 2020 (Dollars in thousands) Non-accrual loans: Commercial Commercial & industrial $ 8,279 $ 8,750 Commercial mortgage 35,978 6,618 Total commercial 44,257 15,368 Consumer Residential mortgage $ 2,203 $ 2,575 Other consumer 1 193 196 Total consumer 2,396 2,771 Total non-accrual loans $ 46,653 $ 18,139 1 Comprised of other revolving credit, installment loans, and overdrafts.
Summary of Loans by Portfolio Type and Internal Credit Quality Ratings	The following table provides a summary of loans by portfolio type and the Bank’s internal credit quality ratings as of March 31, 2021, and December 31, 2020: March 31, 2021 December 31, 2020 (Dollars in thousands) Pass: Commercial & industrial $ 305,540 $ 314,201 Commercial mortgage 656,824 626,477 Commercial construction 31,500 51,785 Commercial agriculture 620 629 Residential mortgage 123,394 123,017 Home equity 2,156 2,076 Automobile 19,509 19,880 Other consumer 163,420 176,522 Total pass loans $ 1,302,963 $ 1,314,587 Special Mention: Commercial & industrial $ 21,500 $ 6,643 Commercial mortgage 15,736 16,285 Residential mortgage 1,679 1,695 Total special mention loans $ 38,915 $ 24,623 Substandard: Commercial & industrial $ 29,065 $ 37,920 Commercial mortgage 45,020 41,654 Residential mortgage 93 433 Other consumer 6 7 Total substandard loans $ 74,184 $ 80,014 Formula Classified: Residential mortgage $ 2,186 $ 2,226 Automobile 64 43 Other consumer 1,647 1,293 Total formula classified loans $ 3,897 $ 3,562 Doubtful: Commercial & industrial $ 7,926 $ 8,178 Commercial mortgage 722 722 Total doubtful loans $ 8,648 $ 8,900 Total outstanding loans, gross $ 1,428,607 $ 1,431,686
Schedule Of Non Accrual Loans And Restructured Loans	The following table sets forth information regarding non-accrual loans and restructured loans, at March 31, 2021, and December 31, 2020: March 31, 2021 December 31, 2020 (Dollars in thousands) Impaired loans: Restructured loans: Non-accruing restructured loans $ 4,703 $ 4,718 Accruing restructured loans 15,438 15,937 Total restructured loans 20,141 20,655 Other impaired loans 44,462 19,450 Total impaired loans $ 64,603 $ 40,105 Impaired loans less than 90 days delinquent and included in total impaired loans $ 18,709 $ 27,664
Information Related to Impaired Loans	The table below contains additional information with respect to impaired loans, by portfolio type, at March 31, 2021, and December 31, 2020: Recorded Investment Unpaid Principal Balance Average Recorded Investment Interest Income Recognized (Dollars in thousands) March 31, 2021, With no related allowance recorded: Commercial & industrial $ 22,621 $ 22,621 $ 5,655 $ 95 Commercial mortgage 37,810 38,058 9,453 19 Residential mortgage 92 92 23 - Other consumer 6 6 1 - Total impaired loans with no related allowance $ 60,529 $ 60,777 $ 15,132 $ 114 March 31, 2021, With a related allowance recorded: Commercial & industrial $ 71 $ 71 $ 18 $ 1 Commercial mortgage 36 51 9 - Residential mortgage 2,257 2,266 564 (25 ) Automobile 14 14 4 1 Other consumer 1,696 1,696 424 24 Total impaired loans with a related allowance $ 4,074 $ 4,098 $ 1,019 $ 1 December 31, 2020, With no related allowance recorded: Commercial & industrial $ 23,745 $ 23,745 $ 23,986 $ 102 Commercial mortgage 11,954 12,201 9,030 45 Residential mortgage 432 432 692 - Other consumer 7 7 7 - Total impaired loans with no related allowance $ 36,138 $ 36,385 $ 33,715 $ 147 December 31, 2020, With a related allowance recorded: Commercial & industrial $ 294 $ 607 $ 282 $ 4 Commercial mortgage 39 54 95 - Residential mortgage 2,298 2,308 2,887 (27 ) Automobile 43 43 71 - Other consumer 1,293 1,292 884 27 Total impaired loans with a related allowance $ 3,967 $ 4,304 $ 4,219 $ 4
Troubled Debt Restructurings	Additional information regarding performing and nonperforming TDRs at March 31, 2021, and December 31, 2020, is set forth in the following table: Number of Pre- Modification Outstanding Recorded Principal Post- Modification Outstanding Recorded Outstanding Balance Loans Investment Modifications Investment March 31, 2021 December 31, 2020 Performing Residential mortgage - $ - $ - $ - $ - $ - Commercial & industrial 7 16,880 - 16,880 14,400 - Commercial mortgage 3 1,048 - 1,048 1,038 15,936 Total performing 10 $ 17,928 $ - $ 17,928 $ 15,438 $ 15,936 Nonperforming Commercial & industrial 1 $ 176 $ - $ 176 $ 108 $ - Commercial mortgage 8 7,897 - 7,897 4,548 4,671 Consumer 1 49 - 49 47 48 Total nonperforming 10 $ 8,122 $ - $ 8,122 $ 4,703 $ 4,719 Total Troubled Debt Restructurings (TDRs) 20 $ 26,050 $ - $ 26,050 $ 20,141 $ 20,655

Regulatory Capital Requiremen_2

Regulatory Capital Requirements (Tables)	3 Months Ended
	Mar. 31, 2021
Banking Regulation [Abstract]
Summary of Actual Capital Amounts and Ratios	The Company’s actual capital amounts and ratios as of March 31, 2021, and December 31, 2020, are presented in the table below. Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio At March 31, 2021: Total capital (to Risk Weighted Assets) $ 209,035 14.228 % $ 117,536 8.000 % $ 146,920 10.000 % Tier 1 capital (to Risk Weighted Assets) $ 175,448 11.942 % $ 88,152 6.000 % $ 117,536 8.000 % Tier 1 capital (to Average Assets) $ 175,448 7.223 % $ 97,156 4.000 % $ 121,444 5.000 % Common Equity Tier 1 Capital (to Risk Weighted Assets) $ 165,666 11.276 % $ 66,114 4.500 % $ 95,498 6.500 % At December 31, 2020: Total capital (to Risk Weighted Assets) $ 206,381 14.307 % $ 115,401 8.000 % $ 144,252 10.000 % Tier 1 capital (to Risk Weighted Assets) $ 173,141 12.003 % $ 86,551 6.000 % $ 115,401 8.000 % Tier 1 capital (to Average Assets) $ 173,141 7.466 % $ 92,765 4.000 % $ 115,956 5.000 % Common Equity Tier 1 Capital (to Risk Weighted Assets) $ 163,359 11.325 % $ 64,913 4.500 % $ 93,764 6.500 %

Off-Balance-Sheet Activities (T

Off-Balance-Sheet Activities (Tables)	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Summary of Financial Instruments with Off-Balance-Sheet Risk	A summary of financial instruments with off-balance-sheet risk at March 31, 2021, and December 31, 2020, is as follows: March 31, 2021 December 31, 2020 Commitments to extend credit $ 174,683 $ 159,405 Letters of credit: Standby letters of credit $ 52,046 $ 52,827 Commercial letters of credit 2,565 2,574 Total $ 54,611 $ 55,401

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis	Financial assets measured at fair value on a recurring basis as of March 31, 2021, and December 31, 2020, are as follows: Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Total At March 31, 2021 U.S. treasury notes and bonds $ - $ - $ - $ - U.S. government agency and government sponsored enterprise (GSE) debt securities - 360,548 - 360,548 U.S. government agency pool securities - 26,307 - 26,307 U.S. government agency or GSE - 146,166 - 146,166 Total fair value of available-for-sale securities - 533,021 - 533,021 Other assets: MSRs - - 1,820 1,820 Total fair value $ - $ 533,021 $ 1,820 $ 534,841 At December 31, 2020 U.S. treasury notes and bonds $ 5,005 $ - $ - $ 5,005 U.S. government agency and government sponsored enterprise (GSE) debt securities - 293,142 - 293,142 U.S. government agency pool securities - 28,606 - 28,606 U.S. government agency or GSE - 183,358 - 183,358 Total fair value of available-for-sale securities 5,005 505,106 - 510,111 Other assets: MSRs - - 1,683 1,683 Total fair value $ 5,005 $ 505,106 $ 1,683 $ 511,794
Assets Measured at Fair Value on Recurring Basis	For the periods ended March 31, 2021, and December 31, 2020, the changes in Level 3 assets measured at fair value on a recurring basis are as follows: March 31, 2021 December 31, 2020 Beginning balance $ 1,683 $ 1,704 Realized and unrealized net losses: Included in net income 137 (21 ) Ending balance $ 1,820 $ 1,683
Summary of Valuation Techniques and Unobservable Inputs	The following table presents quantitative information about the valuation technique and unobservable inputs applied to Level 3 fair value measurements for financial instruments measured at fair value on a recurring basis: Estimated Fair Value Valuation Technique Unobservable Inputs Range of Inputs Weighted Average Rate March 31, 2021 Financial instrument: MSRs $ 1,820 Discounted Cash Flow Discount Rate 6.06% - 7.74% 6.30% Weighted Average Prepayment Rate (Public Securities Association) 125% December 31, 2020 Financial instrument: MSRs $ 1,683 Discounted Cash Flow Discount Rate 6.06% - 7.74% 6.30% Weighted Average Prepayment Rate (Public Securities Association) 125%
Fair Value of Other Financial Instruments	The estimated fair values of the Bank’s financial instruments, excluding those assets recorded at fair value on a recurring basis on the Bank’s condensed consolidated statements of financial condition, are as follows: Estimated fair value Carrying Amount Level 1 Level 2 Level 3 (Dollars in thousands) March 31, 2021 Financial assets: Cash and cash equivalents $ 321,757 $ 321,757 $ - $ - Restricted cash 150 150 - - Federal Home Loan Bank stock 2,814 - 2,814 - Investment securities held-to-maturity 43,082 - 42,350 - Loans, net 1,388,552 - - 1,436,167 Total $ 1,756,355 $ 321,907 $ 45,164 $ 1,436,167 Financial liabilities: Deposits 2,193,028 - - 2,212,655 Total $ 2,193,028 $ - $ - $ 2,212,655 December 31, 2020 Financial assets: Cash and cash equivalents $ 287,628 $ 287,628 $ - $ - Restricted cash 150 150 - - Federal Home Loan Bank stock 2,335 - 2,335 - Investment securities held-to-maturity 46,584 - 46,911 - Loans, net 1,392,722 - - 1,441,402 Total $ 1,729,419 $ 287,778 $ 49,246 $ 1,441,402 Financial liabilities: Deposits $ 2,118,844 $ - $ - $ 2,130,361 Total $ 2,118,844 $ - $ - $ 2,130,361

Comprehensive Income (Loss) (Ta

Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2021
Comprehensive Income Net Of Tax [Abstract]
Components of Accumulated Other Comprehensive Income (Loss) Included in Stockholder's Equity	The components of accumulated other comprehensive income (loss), included in stockholders’ equity, are as follows: March 31, 2021 December 31, 2020 Net unrealized (loss) gain on available-for-sale securities $ (22,031 ) $ 4,241 Amounts reclassified from AOCI for (gain) on sale of investment securities available-for-sale included in net income (272 ) (265 ) Tax effect 4,684 (835 ) Unrealized holding (loss) gain on available-for-sale securities, net of tax (17,619 ) 3,141 Gross unrealized holding loss on held-to-maturity securities (30 ) (285 ) Amortization of unrealized holding loss on held-to-maturity during the period 25 255 Unrealized holding loss on held-to-maturity securities (5 ) (30 ) Accumulated other comprehensive (loss) income $ (17,624 ) $ 3,111

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Summary of Lease Related Assets and Liabilities Recorded in Unaudited Condensed Consolidated Statements of Financial Condition	The following table summarizes the lease-related assets and liabilities recorded as part of other assets and other liabilities, respectively, in our condensed consolidated statements of financial condition at March 31, 2021, and December 31, 2020: March 31, 2021 December 31, 2020 Assets Operating lease right-of-use assets $ 25,377 $ 26,113 Total lease assets $ 25,377 $ 26,113 Liabilities Current Operating $ 2,391 $ 2,510 Noncurrent Operating 23,579 24,112 Total lease liabilities $ 25,970 $ 26,622
Schedule of Maturities of Lease Liabilities Under Operating Leases	The following table provides the maturities of lease liabilities at March 31, 2021: Operating Leases (a) Total 2021 $ 2,545 $ 2,545 2022 2,780 2,780 2023 2,532 2,532 2024 2,420 2,420 2025 2,288 2,288 After 2025 35,569 35,569 Total lease payments $ 48,134 $ 48,134 Less: Interest (b) 22,164 22,164 Present value of lease liabilities (c) $ 25,970 $ 25,970 Note: For leases commencing prior to 2019, minimum lease payments exclude payments to landlords for real estate taxes and common area maintenance. (a) Operating lease payments include $21.5 million related to options to extend lease terms that are reasonably certain of being exercised. (b) Calculated using the incremental borrowing rate based on the lease term for each lease. (c) Includes the current portion of $2.4 million for operating leases.
Summary of Weighted-Average Lease Term and Discount Rate	The following table provides the weighted-average lease term and discount rate at March 31, 2021: March 31, 2021 December 31, 2020 Weighted-average remaining lease term (years) Operating leases 24.8 24.6 Weighted-average discount rate Operating leases 4.10 % 4.09 %

Nature of Business - Additional

Nature of Business - Additional Information (Detail) - Branch	3 Months Ended
	Mar. 31, 2021	Jul. 01, 2016
Guam [Member]
Segment Reporting Information [Line Items]
Number of branches	7
CNMI [Member]
Segment Reporting Information [Line Items]
Number of branches	4
FSM [Member]
Segment Reporting Information [Line Items]
Number of branches	4
RMI [Member]
Segment Reporting Information [Line Items]
Number of branches	1
ROP [Member]
Segment Reporting Information [Line Items]
Number of branches	1
San Francisco, California [Member]
Segment Reporting Information [Line Items]
Number of branches	1
ASC Trust Corporation [Member]
Segment Reporting Information [Line Items]
Percentage of Voting common stock acquire	45.00%
ASC Trust Corporation [Member] | Maximum [Member]
Segment Reporting Information [Line Items]
Percentage of shares acquire		70.00%
Bank Branch [Member]
Segment Reporting Information [Line Items]
Number of branches	18
Dededo and Harmon Branches in Gaum [Member]
Segment Reporting Information [Line Items]
Closure date	Jan. 29, 2021

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	Mar. 27, 2020	Mar. 16, 2020	Mar. 03, 2020	Mar. 31, 2021	Dec. 31, 2020
Summary Of Significant Accounting Policies [Line Items]
Interest-bearing Deposits in Banks and Other Financial Institutions				$ 277,498	$ 244,753
Paycheck Protection Program [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt instrument, face amount					$ 93,400
COVID 19 [Member] | Paycheck Protection Program [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt instrument, face amount	$ 670,000,000
Minimum maturity period of loans	5 years
Extension maturity period of loans	5 years
COVID 19 [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt instrument basis spread on variable rate		0.00%	1.00%
COVID 19 [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt instrument basis spread on variable rate		0.25%	1.25%
Base Rate [Member] | COVID 19 [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt instrument basis spread on variable rate			5.00%
Bank of Guam Trust Department Customer [Member]
Summary Of Significant Accounting Policies [Line Items]
Interest-bearing Deposits in Banks and Other Financial Institutions				$ 150

Earnings Per Common Share - Add

Earnings Per Common Share - Additional Information (Detail) - shares	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Shares subscribed and not issued	0	0

Earnings Per Common Share - Sum

Earnings Per Common Share - Summary of Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 3,295	$ 3,245
Less preferred stock dividends	(135)	(136)
Net income attributable to common stockholders	$ 3,160	$ 3,109
Weighted average number of common shares outstanding - used to calculate basic and diluted earnings per common share	9,705	9,673
Earnings per common share (EPS):
Basic and diluted EPS	$ 0.33	$ 0.32

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Fair Value of Investment Securities, with Gross Unrealized Gains and Losses (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Securities Available for Sale, Amortized Cost	$ 555,324	$ 506,135
Securities Available for Sale, Gross Unrealized Gains	3,076	6,530
Securities Available for Sale, Gross Unrealized Losses	(25,379)	(2,554)
Securities Available for Sale, Estimated Fair Value	533,021	510,111
Securities Held to Maturity, Amortized Cost	43,082	46,584
Securities Held to Maturity, Gross Unrealized Gains	239	388
Securities Held to Maturity, Gross Unrealized Losses	(971)	(61)
Securities Held to Maturity, Estimated Fair Value	42,350	46,911
U.S. Government Agency and Government Sponsored Enterprise (GSE) Debt Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Securities Available for Sale, Amortized Cost	385,366	300,440
Securities Available for Sale, Gross Unrealized Gains		54
Securities Available for Sale, Gross Unrealized Losses	(24,818)	(2,348)
Securities Available for Sale, Estimated Fair Value	360,548	298,146
Securities Held to Maturity, Amortized Cost	31,244	33,221
Securities Held to Maturity, Gross Unrealized Gains	15	93
Securities Held to Maturity, Gross Unrealized Losses	(897)	(15)
Securities Held to Maturity, Estimated Fair Value	30,362	33,299
U.S. Government Agency Pool Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Securities Available for Sale, Amortized Cost	26,456	28,783
Securities Available for Sale, Gross Unrealized Gains	5	29
Securities Available for Sale, Gross Unrealized Losses	(154)	(206)
Securities Available for Sale, Estimated Fair Value	26,307	28,606
Securities Held to Maturity, Amortized Cost	4,062	4,515
Securities Held to Maturity, Gross Unrealized Gains	14	15
Securities Held to Maturity, Gross Unrealized Losses	(54)	(36)
Securities Held to Maturity, Estimated Fair Value	4,022	4,494
U.S. Government Agency or GSE Residential Mortgage-Backed Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Securities Available for Sale, Amortized Cost	143,502	176,912
Securities Available for Sale, Gross Unrealized Gains	3,071	6,447
Securities Available for Sale, Gross Unrealized Losses	(407)
Securities Available for Sale, Estimated Fair Value	146,166	183,359
Securities Held to Maturity, Amortized Cost	7,776	8,848
Securities Held to Maturity, Gross Unrealized Gains	210	280
Securities Held to Maturity, Gross Unrealized Losses	(20)	(10)
Securities Held to Maturity, Estimated Fair Value	$ 7,966	$ 9,118

Investment Securities - Additio

Investment Securities - Additional Information (Detail)	Jul. 01, 2019USD ($)	Mar. 31, 2021USD ($)Securities	Dec. 31, 2020USD ($)	Jun. 27, 2019USD ($)
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Investment securities at carrying value, pledged		$ 403,300,000	$ 360,600,000
Available for sale debt securities		$ 533,021,000	510,111,000
Investment securities in unrealized loss position were not other-than-temporarily impaired | Securities		108
Notes, aggregate principal amount		$ 14,783,000	$ 14,777,000
Subordinated Notes [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Notes, aggregate principal amount				$ 15,000,000
ASC Trust LLC [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Proceeds used to acquire additional stock	$ 4,100,000
Percentage of Voting common stock acquire				20.00%
Stock purchase agreement date	May 27, 2016
Non-controlling interest	45.00%
Percentage of first expected additional shares acquire		25.00%
ASC Trust LLC [Member] | Subordinated Notes [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Notes, aggregate principal amount				$ 15,000,000
ASC Trust LLC [Member] | Director
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Percentage of non minority voting of common stock owned		10.00%
U.S. Government Corporations and Agencies [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Available for sale debt securities		$ 598,400,000
Small Business Administration (SBA) Pool Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Available for sale debt securities		$ 30,500,000
Estimated average remaining life securities		3 years 7 months 6 days
Investment securities in unrealized loss position were not other-than-temporarily impaired | Securities		36
Residential Mortgage Backed Securities [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Available for sale debt securities		$ 151,300,000
Estimated average remaining life securities		3 years 6 months
Government National Mortgage Association (GNMA) [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Investment securities in unrealized loss position were not other-than-temporarily impaired | Securities		1
Agency Securities Issued by Federal Home Loan Bank (FHLB) [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Investment securities in unrealized loss position were not other-than-temporarily impaired | Securities		26
Agency Securities Issued by Federal Home Loan Mortgage Corporation (FHLMC) [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Investment securities in unrealized loss position were not other-than-temporarily impaired | Securities		22
Mortgage Backed Securities Issued By Federal National Mortgage Association (FNMA) [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Investment securities in unrealized loss position were not other-than-temporarily impaired | Securities		4
Agency Security Issued by Federal National Mortgage Association (FNMA) [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Investment securities in unrealized loss position were not other-than-temporarily impaired | Securities		1
Agency Security Issued by Federal Farm Credit Banks (FFCB) [Member]
Schedule Of Trading Securities And Other Trading Assets [Line Items]
Investment securities in unrealized loss position were not other-than-temporarily impaired | Securities		18

Investment Securities - Summa_2

Investment Securities - Summary of Proceeds and Gross Realized Gains from Sales of Available-for-sale Investment Securities (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)
Investments Debt And Equity Securities [Abstract]
Proceeds from sales of available-for-sale securities	$ 46,993
Gross realized gains from sales	$ 272

Investment Securities - Summa_3

Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Available for sale, Amortized cost, Due within one year	$ 26	$ 5,115
Available for sale, Amortized cost, Due after one but within five years	5,132	13,255
Available for sale, Amortized cost, Due after five but within ten years	183,763	129,708
Available for sale, Amortized cost, Due after ten years	366,403	358,057
Securities Available for Sale, Amortized Cost	555,324	506,135
Available for sale, Estimated Fair Value, Due within one year	26	5,121
Available for sale, Estimated Fair Value, Due after one but within five years	5,122	13,432
Available for sale, Estimated Fair Value, Due after five but within ten years	178,597	131,340
Available for sale, Estimated Fair Value, Due after ten years	349,276	360,218
Securities Available for Sale, Estimated Fair Value	533,021	510,111
Held to Maturity, Amortized Cost, Due within one year	9,995	11,990
Held to Maturity, Amortized Cost, Due after one but within five years	2,123	2,325
Held to Maturity, Amortized Cost, Due after five but within ten years	25,033	26,214
Held to Maturity, Amortized Cost, Due after ten years	5,931	6,055
Securities Held to Maturity, Amortized Cost	43,082	46,584
Held to maturity, Estimated Fair Value, Due within one year	10,009	12,070
Held to maturity, Estimated Fair Value, Due after one but within five years	2,154	2,358
Held to maturity, Estimated Fair Value, Due after five but within ten years	24,238	26,348
Held to maturity, Estimated Fair Value, Due after ten years	5,949	6,135
Securities Held to Maturity, Estimated Fair Value	$ 42,350	$ 46,911

Investment Securities - Summa_4

Investment Securities - Summary of Gross Unrealized Losses and Fair Value of Investments, with Unrealized Losses of Temporarily Impaired Securities (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Securities Available for Sale, Unrealized Losses, Less Than Twelve Months	$ (25,232)	$ (2,370)
Securities Available for Sale, Estimated Fair Value, Less Than Twelve Months	398,635	246,824
Securities Available for Sale, Unrealized Losses, More Than Twelve Months	(147)	(184)
Securities Available for Sale, Estimated Fair Value, More Than Twelve Months	21,174	22,672
Securities Available for Sale, Unrealized Losses, Total	(25,379)	(2,554)
Securities Available for Sale, Estimated Fair Value, Total	419,809	269,496
Securities Held to Maturity, Unrealized Losses, Less Than Twelve Months	(907)	(25)
Securities Held to Maturity, Estimated Fair Value, Less Than Twelve Months	20,900	15,491
Securities Held to Maturity, Unrealized Losses, More Than Twelve Months	(64)	(36)
Securities Held to Maturity, Estimated Fair Value, More Than Twelve Months	3,003	2,923
Securities Held to Maturity, Unrealized Losses, Total	(971)	(61)
Securities Held to Maturity, Estimated Fair Value, Total	23,903	18,414
U.S. Government Agency and Government Sponsored Enterprise (GSE) Debt Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Securities Available for Sale, Unrealized Losses, Less Than Twelve Months	(24,818)	(2,348)
Securities Available for Sale, Estimated Fair Value, Less Than Twelve Months	360,548	243,089
Securities Available for Sale, Unrealized Losses, Total	(24,818)	(2,348)
Securities Available for Sale, Estimated Fair Value, Total	360,548	243,089
Securities Held to Maturity, Unrealized Losses, Less Than Twelve Months	(897)	(15)
Securities Held to Maturity, Estimated Fair Value, Less Than Twelve Months	20,353	14,985
Securities Held to Maturity, Unrealized Losses, Total	(897)	(15)
Securities Held to Maturity, Estimated Fair Value, Total	20,353	14,985
U.S. Government Agency Pool Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Securities Available for Sale, Unrealized Losses, Less Than Twelve Months	(7)	(22)
Securities Available for Sale, Estimated Fair Value, Less Than Twelve Months	4,203	3,735
Securities Available for Sale, Unrealized Losses, More Than Twelve Months	(147)	(184)
Securities Available for Sale, Estimated Fair Value, More Than Twelve Months	21,174	22,672
Securities Available for Sale, Unrealized Losses, Total	(154)	(206)
Securities Available for Sale, Estimated Fair Value, Total	25,377	26,407
Securities Held to Maturity, Unrealized Losses, More Than Twelve Months	(54)	(36)
Securities Held to Maturity, Estimated Fair Value, More Than Twelve Months	2,522	2,923
Securities Held to Maturity, Unrealized Losses, Total	(54)	(36)
Securities Held to Maturity, Estimated Fair Value, Total	2,522	2,923
U.S. Government Agency or GSE Residential Mortgage-Backed Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Securities Available for Sale, Unrealized Losses, Less Than Twelve Months	(407)
Securities Available for Sale, Estimated Fair Value, Less Than Twelve Months	33,884
Securities Available for Sale, Unrealized Losses, Total	(407)
Securities Available for Sale, Estimated Fair Value, Total	33,884
Securities Held to Maturity, Unrealized Losses, Less Than Twelve Months	(10)	(10)
Securities Held to Maturity, Estimated Fair Value, Less Than Twelve Months	547	506
Securities Held to Maturity, Unrealized Losses, More Than Twelve Months	(10)
Securities Held to Maturity, Estimated Fair Value, More Than Twelve Months	481
Securities Held to Maturity, Unrealized Losses, Total	(20)	(10)
Securities Held to Maturity, Estimated Fair Value, Total	$ 1,028	$ 506

Loans Held for Sale, Loans an_3

Loans Held for Sale, Loans and Allowance for Loan Losses - Additional Information (Detail)	May 07, 2021USD ($)	Mar. 31, 2021USD ($)BorrowingReceiptBorrowingRelationship	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)	Mar. 31, 2021USD ($)Borrowing	Mar. 27, 2020USD ($)
Accounts Notes And Loans Receivable [Line Items]
Bank originated of mortgage loans held for sale		$ 10,700,000	$ 3,400,000
Sale of mortgage loans held for sale		10,700,000	3,400,000
Unpaid principal balances of mortgage loans serviced		190,900,000		$ 186,900,000	$ 190,900,000
Mortgage loan payment of principal		4,000,000			4,000,000
Mortgage servicing rights at their fair value		1,800,000		1,700,000	1,800,000
Deferred fee (income) costs		$ 3,772,000		4,159,000	$ 3,772,000
Number of borrowing relationships | Borrowing		10			10
Gross loans, total amount		$ 1,428,607,000	$ 1,328,261,000	$ 1,431,686,000	$ 1,428,607,000
Gross loans, Total Percent		100.00%		100.00%	100.00%
Accrual of interest payments on loan		90 days
Nonaccrual status, charged off on loan		120 days
Nonaccrual loans, number of receipt of consecutive payments required for restoring accrual status | Receipt		6
All loans and credit cards delinquent		90 days
Real estate loans delinquent		90 days
Delinquent real estate loans foreclosure completion period		90 days
Period for loans delinquent under formula category		60 days
Maximum value of commercial loans considered to include in monthly formula total		$ 250,000			$ 250,000
Troubled Debt Restructurings (TDRs)		$ 20,141,000		$ 20,655,000	20,141,000
Number of days deferrals residential mortgage and commercial loans		90 days
Number of days deferrals for consumer and auto mobile loans		90 days
Number of days troubled debt restructurings loans delinquent		30 days
Defaults troubled debt restructuring		0	0
Number of significant borrowing relationship in bankruptcy | BorrowingRelationship		1
Loans receivable, amount under bankruptcy		$ 7,900,000			7,900,000
Borrowing Relationship One [Member]
Accounts Notes And Loans Receivable [Line Items]
Specific reserve		3,500,000			3,500,000
COVID 19 [Member]
Accounts Notes And Loans Receivable [Line Items]
Specific reserve		4,300,000			4,300,000
Commercial Mortgage [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		718,302,000		685,138,000	$ 718,302,000
Commercial Mortgage [Member] | Troubled Debt Restructuring [Member]
Accounts Notes And Loans Receivable [Line Items]
Increase (Decrease) in total gross loans		$ (514,000)
Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Percentage of Loan collateralized		110.00%			110.00%
Paycheck Protection Program [Member]
Accounts Notes And Loans Receivable [Line Items]
Debt instrument, term		2 years
Debt instrument, interest rate		1.00%			1.00%
Debt instrument, face amount				93,400,000
Proceeds from loans fund				93,400,000
Debt instrument, outstanding balance		$ 89,200,000			$ 89,200,000
Debt instrument, forgiven amount		$ 40,800,000		7,700,000	$ 48,500,000
Paycheck Protection Program [Member] | COVID 19 [Member]
Accounts Notes And Loans Receivable [Line Items]
Debt instrument, face amount						$ 670,000,000,000
Paycheck Protection Program [Member] | Subsequent Event [Member]
Accounts Notes And Loans Receivable [Line Items]
Debt instrument, face amount	$ 45,500,000
Proceeds from loans fund	$ 45,500,000
5-Year Paycheck Protection Program [Member]
Accounts Notes And Loans Receivable [Line Items]
Debt instrument, term		5 years
Debt instrument, interest rate		1.00%			1.00%
10 Largest Borrowing Relationship [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 342,000,000		$ 345,000,000	$ 342,000,000
Gross loans, Total Percent		23.90%		24.10%	23.90%
Commercial Mortgage [Member]
Accounts Notes And Loans Receivable [Line Items]
Increase (Decrease) percentage of gross loan		2.20%

Loans Held for Sale, Loans an_4

Loans Held for Sale, Loans and Allowance for Loan Losses - Loan Portfolio (Detail) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 1,428,607	$ 1,431,686	$ 1,328,261
Deferred loan (fees) costs, net		(3,772)	(4,159)
Allowance for loan losses		(36,283)	(34,805)	(29,065)	$ (27,870)
Loans, net		$ 1,388,552	$ 1,392,722
Commercial, Percent		78.00%	77.10%
Consumer, Percent		22.00%	22.90%
Gross loans, Total Percent		100.00%	100.00%
Automobile [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 19,573	$ 19,923
Consumer, Percent		1.40%	1.40%
Residential Mortgage Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 127,352	$ 127,371
Consumer, Percent		8.90%	8.90%
Home Equity [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 2,156	$ 2,076
Consumer, Percent		0.10%	0.10%
Commercial & Industrial [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 364,031	$ 366,942
Commercial, Percent		25.50%	25.60%
Commercial Mortgage [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 718,302	$ 685,138
Commercial, Percent		50.30%	47.90%
Commercial Construction Loan [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 31,500	$ 51,785
Commercial, Percent		2.20%	3.60%
Commercial Agriculture [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 620	$ 629
Commercial, Percent		0.00%	0.00%
Other Consumer Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount	[1]	$ 165,073	$ 177,822
Consumer, Percent	[1]	11.60%	12.50%
Commercial [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 1,114,453	$ 1,104,494	972,000
Allowance for loan losses		(22,519)	(21,213)	$ (19,588)	$ (18,360)
Consumer Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Gross loans, total amount		$ 314,154	$ 327,192
[1]	Comprised of other revolving credit, installment loans, and overdrafts.

Loans Held for Sale, Loans an_5

Loans Held for Sale, Loans and Allowance for Loan Losses - Activity of Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Receivables [Abstract]
Balance, beginning of period	$ 34,805	$ 27,870	$ 27,870
Charged off loans	(1,595)	(1,492)	(5,628)
Recoveries on loans previously charged off	598	480	2,205
Provision for loan losses	2,475	2,207	10,358
Balance, end of period	$ 36,283	$ 29,065	$ 34,805

Loans Held for Sale, Loans an_6

Loans Held for Sale, Loans and Allowance for Loan Losses - Loan Balances and Related Allowance for Loan Losses, by Portfolio Type (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Allowance for loan losses:
Balance, beginning of period	$ 34,805	$ 27,870	$ 27,870
Charge-offs	(1,595)	(1,492)	(5,628)
Recoveries	598	480	2,205
Provision	2,475	2,207	10,358
Balance, end of period	36,283	29,065	34,805
Allowance balance at end of period related to:
Loans individually evaluated for impairment	5,081	4,554	4,768
Loans collectively evaluated for impairment	31,202	24,511	30,037
Balance, end of period	36,283	29,065	34,805
Loan balances at end of period:
Loans individually evaluated for impairment	64,603	38,747	40,104
Loans collectively evaluated for impairment	1,364,004	1,289,514	1,391,582
Ending balance	1,428,607	1,328,261	1,431,686
Commercial [Member]
Allowance for loan losses:
Balance, beginning of period	21,213	18,360	18,360
Charge-offs	(77)		(1,069)
Recoveries	124	5	399
Provision	1,259	1,223	3,523
Balance, end of period	22,519	19,588	21,213
Allowance balance at end of period related to:
Loans individually evaluated for impairment	3,502	4,156	3,500
Loans collectively evaluated for impairment	19,017	15,432	17,713
Balance, end of period	22,519	19,588	21,213
Loan balances at end of period:
Loans individually evaluated for impairment	60,538	33,916	36,031
Loans collectively evaluated for impairment	1,053,915	938,084	1,068,463
Ending balance	1,114,453	972,000	1,104,494
Residential Mortgage And Home Equity [Member]
Allowance for loan losses:
Balance, beginning of period	1,990	1,490	1,490
Charge-offs	(4)
Provision	210	402	500
Balance, end of period	2,196	1,892	1,990
Allowance balance at end of period related to:
Loans individually evaluated for impairment	1	2	4
Loans collectively evaluated for impairment	2,195	1,890	1,986
Balance, end of period	2,196	1,892	1,990
Loan balances at end of period:
Loans individually evaluated for impairment	2,349	4,416	2,730
Loans collectively evaluated for impairment	127,159	122,805	126,717
Ending balance	129,508	127,221	129,447
Consumer [Member]
Allowance for loan losses:
Balance, beginning of period	11,602	8,020	8,020
Charge-offs	(1,514)	(1,492)	(4,559)
Recoveries	474	475	1,806
Provision	1,006	582	6,335
Balance, end of period	11,568	7,585	11,602
Allowance balance at end of period related to:
Loans individually evaluated for impairment	1,578	396	1,264
Loans collectively evaluated for impairment	9,990	7,189	10,338
Balance, end of period	11,568	7,585	11,602
Loan balances at end of period:
Loans individually evaluated for impairment	1,716	415	1,343
Loans collectively evaluated for impairment	182,930	228,625	196,402
Ending balance	$ 184,646	$ 229,040	$ 197,745

Loans Held for Sale, Loans an_7

Loans Held for Sale, Loans and Allowance for Loan Losses - Summary of Delinquency Status of Loans (Detail) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 64,741	$ 88,056
Current		1,363,866	1,343,630
Total Loans Outstanding		1,428,607	1,431,686	$ 1,328,261
Automobile [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		599	807
Current		18,974	19,116
Total Loans Outstanding		19,573	19,923
Residential Mortgage Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		8,360	7,867
Current		118,992	119,504
Total Loans Outstanding		127,352	127,371
Home Equity [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current		2,156	2,076
Total Loans Outstanding		2,156	2,076
Commercial & Industrial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		14,122	26,075
Current		349,909	340,867
Total Loans Outstanding		364,031	366,942
Commercial Mortgage [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		36,371	47,129
Current		681,931	638,009
Total Loans Outstanding		718,302	685,138
Commercial Construction Loan [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current		31,500	51,785
Total Loans Outstanding		31,500	51,785
Commercial Agriculture [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Current		620	629
Total Loans Outstanding		620	629
Other Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	[1]	5,289	6,178
Current	[1]	159,784	171,644
Total Loans Outstanding	[1]	165,073	177,822
Commercial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		50,493	73,204
Current		1,063,960	1,031,290
Total Loans Outstanding		1,114,453	1,104,494	$ 972,000
Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		14,248	14,852
Current		299,906	312,340
Total Loans Outstanding		314,154	327,192
30-59 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		13,628	31,705
30-59 Days Past Due [Member] | Automobile [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		474	580
30-59 Days Past Due [Member] | Residential Mortgage Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		5,847	4,758
30-59 Days Past Due [Member] | Commercial & Industrial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		4,527	13,712
30-59 Days Past Due [Member] | Commercial Mortgage [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		435	9,183
30-59 Days Past Due [Member] | Other Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	[1]	2,345	3,472
30-59 Days Past Due [Member] | Commercial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		4,962	22,895
30-59 Days Past Due [Member] | Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		8,666	8,810
60-89 Days Past Due [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		5,369	43,938
60-89 Days Past Due [Member] | Automobile [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		62	184
60-89 Days Past Due [Member] | Residential Mortgage Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,422	1,833
60-89 Days Past Due [Member] | Commercial & Industrial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,656	3,857
60-89 Days Past Due [Member] | Commercial Mortgage [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		817	36,562
60-89 Days Past Due [Member] | Other Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	[1]	1,412	1,502
60-89 Days Past Due [Member] | Commercial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		2,473	40,419
60-89 Days Past Due [Member] | Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		2,896	3,519
90 Days and Greater Non-Accrual [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		43,263	10,287
90 Days and Greater Non-Accrual [Member] | Residential Mortgage Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		970	1,147
90 Days and Greater Non-Accrual [Member] | Commercial & Industrial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		7,926	8,119
90 Days and Greater Non-Accrual [Member] | Commercial Mortgage [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		34,289	913
90 Days and Greater Non-Accrual [Member] | Other Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	[1]	78	108
90 Days and Greater Non-Accrual [Member] | Commercial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		42,215	9,032
90 Days and Greater Non-Accrual [Member] | Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		1,048	1,255
90 Days and Greater Still Accruing [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		2,481	2,126
90 Days and Greater Still Accruing [Member] | Automobile [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		63	43
90 Days and Greater Still Accruing [Member] | Residential Mortgage Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		121	129
90 Days and Greater Still Accruing [Member] | Commercial & Industrial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		13	387
90 Days and Greater Still Accruing [Member] | Commercial Mortgage [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		830	471
90 Days and Greater Still Accruing [Member] | Other Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	[1]	1,454	1,096
90 Days and Greater Still Accruing [Member] | Commercial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		843	858
90 Days and Greater Still Accruing [Member] | Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		$ 1,638	$ 1,268
[1]	Comprised of other revolving credit, installment loans, and overdrafts.

Loans Held for Sale, Loans an_8

Loans Held for Sale, Loans and Allowance for Loan Losses - Loans on Non-Accrual Status, by Portfolio (Detail) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans		$ 46,653	$ 18,139
Residential Mortgage Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans		2,203	2,575
Commercial & Industrial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans		8,279	8,750
Commercial Mortgage [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans		35,978	6,618
Other Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans	[1]	193	196
Commercial [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans		44,257	15,368
Consumer Loans [Member]
Financing Receivable Recorded Investment Past Due [Line Items]
Non-accrual loans		$ 2,396	$ 2,771
[1]	Comprised of other revolving credit, installment loans, and overdrafts.

Loans Held for Sale, Loans an_9

Loans Held for Sale, Loans and Allowance for Loan Losses - Summary of Loans by Portfolio Type and Internal Credit Quality Ratings (Detail) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		$ 1,428,607	$ 1,431,686	$ 1,328,261
Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		1,302,963	1,314,587
Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		38,915	24,623
Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		74,184	80,014
Formula Classified [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		3,897	3,562
Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		8,648	8,900
Automobile [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		19,573	19,923
Automobile [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		19,509	19,880
Automobile [Member] | Formula Classified [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		64	43
Residential Mortgage Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		127,352	127,371
Residential Mortgage Loans [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		123,394	123,017
Residential Mortgage Loans [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		1,679	1,695
Residential Mortgage Loans [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		93	433
Residential Mortgage Loans [Member] | Formula Classified [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		2,186	2,226
Home Equity [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		2,156	2,076
Home Equity [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		2,156	2,076
Commercial & Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		364,031	366,942
Commercial & Industrial [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		305,540	314,201
Commercial & Industrial [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		21,500	6,643
Commercial & Industrial [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		29,065	37,920
Commercial & Industrial [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		7,926	8,178
Commercial Mortgage [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		718,302	685,138
Commercial Mortgage [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		656,824	626,477
Commercial Mortgage [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		15,736	16,285
Commercial Mortgage [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		45,020	41,654
Commercial Mortgage [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		722	722
Commercial Construction Loan [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		31,500	51,785
Commercial Construction Loan [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		31,500	51,785
Commercial Agriculture [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		620	629
Commercial Agriculture [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		620	629
Other Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount	[1]	165,073	177,822
Other Consumer Loans [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		163,420	176,522
Other Consumer Loans [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		6	7
Other Consumer Loans [Member] | Formula Classified [Member]
Financing Receivable Recorded Investment [Line Items]
Gross loans, total amount		$ 1,647	$ 1,293
[1]	Comprised of other revolving credit, installment loans, and overdrafts.

Loans Held for Sale, Loans a_10

Loans Held for Sale, Loans and Allowance for Loan Losses - Non-Accrual Loans and Restructured Loans (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Restructured loans:
Non-accruing restructured loans	$ 4,703	$ 4,718
Accruing restructured loans	15,438	15,937
Total restructured loans	20,141	20,655
Other impaired loans	44,462	19,450
Total impaired loans	64,603	40,105
Impaired loans less than 90 days delinquent and included in total impaired loans	$ 18,709	$ 27,664

Loans Held for Sale, Loans a_11

Loans Held for Sale, Loans and Allowance for Loan Losses - Information Related to Impaired Loans (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable Impaired [Line Items]
Total impaired loans with no related allowance, Recorded Investment	$ 60,529	$ 36,138
Total impaired loans with no related allowance, Unpaid Principal Balance	60,777	36,385
Total impaired loans with no related allowance, Average Recorded Investment	15,132	33,715
Total impaired loans with no related allowance, Interest Income Recognized	114	147
Total impaired loans with a related allowance recorded, Recorded Investment	4,074	3,967
Total impaired loans with a related allowance recorded, Unpaid Principal Balance	4,098	4,304
Total impaired loans with a related allowance recorded, Average Recorded Investment	1,019	4,219
Total impaired loans with a related allowance recorded, Interest Income Recognized	1	4
Automobile [Member]
Financing Receivable Impaired [Line Items]
Total impaired loans with a related allowance recorded, Recorded Investment	14	43
Total impaired loans with a related allowance recorded, Unpaid Principal Balance	14	43
Total impaired loans with a related allowance recorded, Average Recorded Investment	4	71
Total impaired loans with a related allowance recorded, Interest Income Recognized	1
Residential Mortgage Loans [Member]
Financing Receivable Impaired [Line Items]
Total impaired loans with no related allowance, Recorded Investment	92	432
Total impaired loans with no related allowance, Unpaid Principal Balance	92	432
Total impaired loans with no related allowance, Average Recorded Investment	23	692
Total impaired loans with a related allowance recorded, Recorded Investment	2,257	2,298
Total impaired loans with a related allowance recorded, Unpaid Principal Balance	2,266	2,308
Total impaired loans with a related allowance recorded, Average Recorded Investment	564	2,887
Total impaired loans with a related allowance recorded, Interest Income Recognized	(25)	(27)
Commercial & Industrial [Member]
Financing Receivable Impaired [Line Items]
Total impaired loans with no related allowance, Recorded Investment	22,621	23,745
Total impaired loans with no related allowance, Unpaid Principal Balance	22,621	23,745
Total impaired loans with no related allowance, Average Recorded Investment	5,655	23,986
Total impaired loans with no related allowance, Interest Income Recognized	95	102
Total impaired loans with a related allowance recorded, Recorded Investment	71	294
Total impaired loans with a related allowance recorded, Unpaid Principal Balance	71	607
Total impaired loans with a related allowance recorded, Average Recorded Investment	18	282
Total impaired loans with a related allowance recorded, Interest Income Recognized	1	4
Commercial Mortgage [Member]
Financing Receivable Impaired [Line Items]
Total impaired loans with no related allowance, Recorded Investment	37,810	11,954
Total impaired loans with no related allowance, Unpaid Principal Balance	38,058	12,201
Total impaired loans with no related allowance, Average Recorded Investment	9,453	9,030
Total impaired loans with no related allowance, Interest Income Recognized	19	45
Total impaired loans with a related allowance recorded, Recorded Investment	36	39
Total impaired loans with a related allowance recorded, Unpaid Principal Balance	51	54
Total impaired loans with a related allowance recorded, Average Recorded Investment	9	95
Other Consumer Loans [Member]
Financing Receivable Impaired [Line Items]
Total impaired loans with no related allowance, Recorded Investment	6	7
Total impaired loans with no related allowance, Unpaid Principal Balance	6	7
Total impaired loans with no related allowance, Average Recorded Investment	1	7
Total impaired loans with a related allowance recorded, Recorded Investment	1,696	1,293
Total impaired loans with a related allowance recorded, Unpaid Principal Balance	1,696	1,292
Total impaired loans with a related allowance recorded, Average Recorded Investment	424	884
Total impaired loans with a related allowance recorded, Interest Income Recognized	$ 24	$ 27

Loans Held for Sale, Loans a_12

Loans Held for Sale, Loans and Allowance for Loan Losses - Troubled Debt Restructurings (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)SecurityLoan	Dec. 31, 2020USD ($)
Financing Receivable Modifications [Line Items]
Number of Loans | SecurityLoan	20
Pre-Modification Outstanding Recorded Investment	$ 26,050
Post-Modification Outstanding Recorded Investment	26,050
Outstanding Balance	$ 20,141	$ 20,655
Performing [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | SecurityLoan	10
Pre-Modification Outstanding Recorded Investment	$ 17,928
Post-Modification Outstanding Recorded Investment	17,928
Outstanding Balance	$ 15,438	15,936
Performing [Member] | Commercial & Industrial [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | SecurityLoan	7
Pre-Modification Outstanding Recorded Investment	$ 16,880
Post-Modification Outstanding Recorded Investment	16,880
Outstanding Balance	$ 14,400
Performing [Member] | Commercial Mortgage [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | SecurityLoan	3
Pre-Modification Outstanding Recorded Investment	$ 1,048
Post-Modification Outstanding Recorded Investment	1,048
Outstanding Balance	$ 1,038	15,936
Nonperforming [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | SecurityLoan	10
Pre-Modification Outstanding Recorded Investment	$ 8,122
Post-Modification Outstanding Recorded Investment	8,122
Outstanding Balance	$ 4,703	4,719
Nonperforming [Member] | Commercial & Industrial [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | SecurityLoan	1
Pre-Modification Outstanding Recorded Investment	$ 176
Post-Modification Outstanding Recorded Investment	176
Outstanding Balance	$ 108
Nonperforming [Member] | Commercial Mortgage [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | SecurityLoan	8
Pre-Modification Outstanding Recorded Investment	$ 7,897
Post-Modification Outstanding Recorded Investment	7,897
Outstanding Balance	$ 4,548	4,671
Nonperforming [Member] | Consumer Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Loans | SecurityLoan	1
Pre-Modification Outstanding Recorded Investment	$ 49
Post-Modification Outstanding Recorded Investment	49
Outstanding Balance	$ 47	$ 48

Regulatory Capital Requiremen_3

Regulatory Capital Requirements - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Average assets		$ 2,320
COVID 19 [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Increase in average assets	$ 109.8
Average assets	$ 2,430

Regulatory Capital Requiremen_4

Regulatory Capital Requirements - Summary of Company's Actual Capital Amounts and Ratios (Detail) $ in Thousands	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Banking Regulation [Abstract]
Total capital (to Risk Weighted Assets), Actual, Amount	$ 209,035	$ 206,381
Tier 1 capital (to Risk Weighted Assets), Actual, Amount	175,448	173,141
Tier 1 capital (to Average Assets), Actual, Amount	175,448	173,141
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Amount	$ 165,666	$ 163,359
Total capital (to Risk Weighted Assets), Actual, Ratio	0.14228	0.14307
Tier 1 capital (to Risk Weighted Assets), Actual, Ratio	0.11942	0.12003
Tier 1 capital (to Average Assets), Actual, Ratio	0.07223	0.07466
Common Equity Tier 1 Capital (to Risk Weighted Assets), Actual, Ratio	0.11276	0.11325
Total capital (to Risk Weighted Assets), For Capital Adequacy Purposes, Amount	$ 117,536	$ 115,401
Tier 1 capital (to Risk Weighted Assets), For Capital Adequacy Purposes, Amount	88,152	86,551
Tier 1 capital (to Average Assets), For Capital Adequacy Purposes, Amount	97,156	92,765
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes, Amount	$ 66,114	$ 64,913
Total capital (to Risk Weighted Assets), For Capital Adequacy Purposes, Ratio	0.08000	0.08000
Tier 1 capital (to Risk Weighted Assets), For Capital Adequacy Purposes, Ratio	0.06000	0.06000
Tier 1 capital (to Average Assets), For Capital Adequacy Purposes, Ratio	0.04000	0.04000
Common Equity Tier 1 Capital (to Risk Weighted Assets), For Capital Adequacy Purposes, Ratio	4.50%	4.50%
Total capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 146,920	$ 144,252
Tier 1 capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	117,536	115,401
Tier 1 capital (to Average Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	121,444	115,956
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 95,498	$ 93,764
Total capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.10000	0.10000
Tier 1 capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.08000	0.08000
Tier 1 capital (to Average Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.05000	0.05000
Common Equity Tier 1 Capital (to Risk Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%

Off-Balance-Sheet Activities -

Off-Balance-Sheet Activities - Summary of Financial Instruments with Off-Balance-Sheet Risk (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Commitments to Extend Credit [Member]
Loss Contingencies [Line Items]
Financial Instrument with off-balance-sheet risk	$ 174,683	$ 159,405
Letters of Credit [Member]
Loss Contingencies [Line Items]
Financial Instrument with off-balance-sheet risk	54,611	55,401
Letters of Credit [Member] | Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Financial Instrument with off-balance-sheet risk	52,046	52,827
Letters of Credit [Member] | Commercial Letters Of Credit [Member]
Loss Contingencies [Line Items]
Financial Instrument with off-balance-sheet risk	$ 2,565	$ 2,574

Off-Balance-Sheet Activities _2

Off-Balance-Sheet Activities - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)
Fair Value Disclosures [Abstract]
Letters of credit expiration date maximum	1 year
Maximum undiscounted future payments	$ 54,600
Guarantee maturity maximum	1 year
Reserve liabilities associated with guarantees	$ 44

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Valuation allowance	$ 528	$ 1,300
Guam income tax statutory rate	21.00%

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	$ 533,021	$ 510,111
Mortgage servicing rights at their fair value	1,800	1,700
U.S. Government Agency Pool Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	26,307	28,606
U.S. Government Agency or GSE Residential Mortgage-Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	146,166	183,359
Fair Value on Recurring Basis [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	533,021	510,111
Mortgage servicing rights at their fair value	1,820	1,683
Total fair value	534,841	511,794
Fair Value on Recurring Basis [Member] | U.S. Treasury Notes and Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value		5,005
Fair Value on Recurring Basis [Member] | U.S. Government Agency and Sponsored Enterprise (GSE) Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	360,548	293,142
Fair Value on Recurring Basis [Member] | U.S. Government Agency Pool Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	26,307	28,606
Fair Value on Recurring Basis [Member] | U.S. Government Agency or GSE Residential Mortgage-Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	146,166	183,358
Fair Value on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value		5,005
Total fair value		5,005
Fair Value on Recurring Basis [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury Notes and Bonds [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value		5,005
Fair Value on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	533,021	505,106
Total fair value	533,021	505,106
Fair Value on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Agency and Sponsored Enterprise (GSE) Debt Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	360,548	293,142
Fair Value on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Agency Pool Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	26,307	28,606
Fair Value on Recurring Basis [Member] | Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Agency or GSE Residential Mortgage-Backed Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available-for-sale, at fair value	146,166	183,358
Fair Value on Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Mortgage servicing rights at their fair value	1,820	1,683
Total fair value	$ 1,820	$ 1,683

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Transfers in or out of the Bank's Level 3 financial instruments	$ 0	$ 0
Nonfinancial assets or liabilities for which a nonrecurring change in fair value	$ 0	0
Number of days to maturity federal funds purchased and FHLB advances to be treated as short-term borrowings	90 days
Short-term borrowings outstanding	$ 0	0
Long-term borrowings outstanding	$ 0	0
Minimum [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value of FHLB advances maturing after ninety days	90 days
Fair Value on Recurring Basis [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Liabilities measured at fair value on a recurring basis	$ 0	$ 0

Fair Value Measurements - Asset

Fair Value Measurements - Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Beginning balance	$ 1,683	$ 1,704
Realized and unrealized net losses:
Included in net income	137	(21)
Ending balance	$ 1,820	$ 1,683

Fair Value Measurements - Sum_2

Fair Value Measurements - Summary of Valuation Techniques and Unobservable Inputs (Detail) $ in Thousands	Mar. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgage Servicing Rights, Estimated Fair Value	$ 1,800	$ 1,700
Fair Value on Recurring Basis [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgage Servicing Rights, Estimated Fair Value	1,820	1,683
Fair Value on Recurring Basis [Member] | Discount Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgage Servicing Rights, Estimated Fair Value	$ 1,820	$ 1,683
Mortgage Servicing Rights, Valuation Technique [Extensible List]	us-gaap:ValuationTechniqueDiscountedCashFlowMember	us-gaap:ValuationTechniqueDiscountedCashFlowMember
Fair Value on Recurring Basis [Member] | Discount Rate [Member] | Minimum [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgage Servicing Rights, Range of Inputs	0.0606	0.0606
Fair Value on Recurring Basis [Member] | Discount Rate [Member] | Maximum [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgage Servicing Rights, Range of Inputs	0.0774	0.0774
Fair Value on Recurring Basis [Member] | Discount Rate [Member] | Weighted Average [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgage Servicing Rights, Range of Inputs	0.0630	0.0630
Fair Value on Recurring Basis [Member] | Weighted Average Prepayment Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Mortgage Servicing Rights, Range of Inputs	1.25	1.25

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value of Other Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial assets:
Investment securities held-to-maturity	$ 42,350	$ 46,911
Carrying Amount [Member]
Financial assets:
Cash and cash equivalents	321,757	287,628
Restricted cash	150	150
Federal Home Loan Bank stock	2,814	2,335
Investment securities held-to-maturity	43,082	46,584
Loans, net	1,388,552	1,392,722
Total fair value	1,756,355	1,729,419
Financial liabilities:
Deposits	2,193,028	2,118,844
Total	2,193,028	2,118,844
Fair Value on Nonrecurring Basis [Member] | Estimated Fair Value [Member] | Level 1 [Member]
Financial assets:
Cash and cash equivalents	321,757	287,628
Restricted cash	150	150
Total fair value	321,907	287,778
Fair Value on Nonrecurring Basis [Member] | Estimated Fair Value [Member] | Level 2 [Member]
Financial assets:
Federal Home Loan Bank stock	2,814	2,335
Investment securities held-to-maturity	42,350	46,911
Total fair value	45,164	49,246
Fair Value on Nonrecurring Basis [Member] | Estimated Fair Value [Member] | Level 3 [Member]
Financial assets:
Loans, net	1,436,167	1,441,402
Total fair value	1,436,167	1,441,402
Financial liabilities:
Deposits	2,212,655	2,130,361
Total	$ 2,212,655	$ 2,130,361

Comprehensive Income (Loss) - C

Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) Included in Stockholder's Equity (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Comprehensive Income Net Of Tax [Abstract]
Net unrealized (loss) gain on available-for-sale securities	$ (22,031)	$ 4,241
Amounts reclassified from AOCI for (gain) on sale of investment securities available-for-sale included in net income	(272)	(265)
Tax effect	4,684	(835)
Unrealized holding (loss) gain on available-for-sale securities, net of tax	(17,619)	3,141
Gross unrealized holding loss on held-to-maturity securities	(30)	(285)
Amortization of unrealized holding loss on held-to-maturity during the period	25	255
Unrealized holding loss on held-to-maturity securities	(5)	(30)
Accumulated other comprehensive (loss) income	$ (17,624)	$ 3,111

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Lease [Line Items]
Operating lease option to extend description	Most leases include one or more options to renew, with renewal terms that can extend the lease term from one to 50 years or more.
Operating lease option to extend	true
Operating lease payments	$ 887	$ 876
Minimum future rents to be received under non-cancelable operating sublease agreements, 2020	43
Minimum future rents to be received under non-cancelable operating sublease agreements, 2021	38
Minimum future rents to be received under non-cancelable operating sublease agreements, 2022	26
Operating lease costs	971	935
Variable lease cost	971	935
Bank Facility Lease [Member]
Lease [Line Items]
Operating lease payments	$ 62	$ 59
Minimum [Member]
Lease [Line Items]
Operating lease option to extend	1 year
Original operating lease term	1 year
Maximum [Member]
Lease [Line Items]
Operating lease option to extend	50 years
Original operating lease term	3 years
Operating lease renewal term	12 years

Leases - Summary of Lease Relat

Leases - Summary of Lease Related Assets and Liabilities Recorded in Unaudited Condensed Consolidated Statements of Financial Condition (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 25,377	$ 26,113
Total lease assets	25,377	26,113
Operating	2,391	2,510
Operating	23,579	24,112
Total lease liabilities	$ 25,970	$ 26,622

Leases - Schedule of Maturities

Leases - Schedule of Maturities of Lease Liabilities Under Operating Leases (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Operating Leases
Operating Leases, 2021	$ 2,545
Operating Leases, 2022	2,780
Operating Leases, 2023	2,532
Operating Leases, 2024	2,420
Operating Leases, 2025	2,288
Operating Leases, After 2025	35,569
Operating Leases, Total lease payments	48,134
Operating Leases, Less: Interest	22,164
Operating Leases, Present value of lease liabilities	25,970
Total
Lease liability, 2021	2,545
Lease liability, 2022	2,780
Lease liability, 2023	2,532
Lease liability, 2024	2,420
Lease liability, 2025	2,288
Lease liability, After 2025	35,569
Lease liability, Total lease payments	48,134
Lease liability, Less: Interest	22,164
Lease liability, Present value of lease liabilities	$ 25,970	$ 26,622

Leases - Schedule of Maturiti_2

Leases - Schedule of Maturities of Lease Liabilities Under Operating Leases (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease payments related to option to extend lease	$ 21,500
Current portion of operating lease liability	$ 2,391	$ 2,510

Leases - Summary of Weighted-Av

Leases - Summary of Weighted-Average Lease Term and Discount Rate (Detail)	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating leases, weighted-average remmaining lease term (years)	24 years 9 months 18 days	24 years 7 months 6 days
Operating leases, weighted-average discount rate	4.10%	4.09%

Subordinated Debt - Additional

Subordinated Debt - Additional Information (Detail) - USD ($)	Jun. 27, 2019	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Notes, aggregate principal amount		$ 14,783,000	$ 14,777,000
Subordinated Notes [Member]
Debt Instrument [Line Items]
Notes, aggregate principal amount	$ 15,000,000
Notes, interest rate	6.35%
Notes, maturity date	Jun. 30, 2029
Notes, term	10 years
Notes, interest payment terms		The Company is required to pay interest only semi-annually during the fixed period, and quarterly during the floating rate period.
Subordinated Notes [Member] | Three-month LIBOR [Member]
Debt Instrument [Line Items]
Notes, basis points payable	4.66%