Altabancorp (ALTA) 10-Q 9 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 31, 2021
Cover [Abstract]
Entity Registrant Name	ALTABANCORP
Entity Central Index Key	0001636286
Document Type	10-Q
Document Period End Date	Jun. 30, 2021
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		18,887,450
Entity File Number	001-37416
Entity Tax Identification Number	87-0622021
Entity Address, Address Line One	1 East Main Street
Entity Address, City or Town	American Fork
Entity Address, State or Province	UT
Entity Address, Postal Zip Code	84003
City Area Code	801
Local Phone Number	642-3998
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	UT
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	ALTA
Security Exchange Name	NASDAQ

UNAUDITED CONSOLIDATED BALANCE

UNAUDITED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Cash and cash equivalents:
Cash and due from banks	$ 35,446	$ 39,312
Interest-bearing deposits	27,045	197,769
Federal funds sold	838	2,793
Total cash and cash equivalents	63,329	239,874
Investment securities - available for sale, at fair value	1,491,707	1,320,393
Non-marketable equity securities	4,042	2,890
Loans held for sale	6,672	14,152
Loans:
Loans held for investment	1,873,685	1,695,496
Allowance for credit losses	(34,958)	(41,236)
Total loans held for investment, net	1,838,727	1,654,260
Premises and equipment, net	34,821	36,460
Goodwill	25,673	25,673
Bank-owned life insurance	43,234	42,720
Deferred income tax assets, net	11,787	7,389
Accrued interest receivable	9,537	11,336
Other intangibles	4,831	4,451
Other assets	6,445	6,630
Total assets	3,540,805	3,366,228
Deposits:
Non-interest bearing deposits	1,145,009	1,039,844
Interest bearing deposits	2,011,698	1,876,464
Total deposits	3,156,707	2,916,308
Short-term borrowings		64,554
Accrued interest payable	325	616
Other liabilities	13,142	13,612
Total liabilities	3,170,174	2,995,090
Shareholders’ equity:
Preferred shares, $0.01 par value: 3,000,000 shares authorized; no shares issued
Common shares, $0.01 par value: 30,000,000 shares authorized; 18,880,610 and 18,828,522 shares issued and outstanding as of June 30, 2021 and December 31, 2020, respectively	189	188
Additional paid-in capital	88,209	87,574
Retained earnings	285,633	269,157
Accumulated other comprehensive (loss) / income	(3,400)	14,219
Total shareholders’ equity	370,631	371,138
Total liabilities and shareholders’ equity	$ 3,540,805	$ 3,366,228

UNAUDITED CONSOLIDATED BALANC_2

UNAUDITED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	3,000,000	3,000,000
Preferred shares, issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	18,880,610	18,828,522
Common stock, shares outstanding	18,880,610	18,828,522

UNAUDITED CONSOLIDATED STATEMEN

UNAUDITED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Interest income
Interest and fees on loans	$ 22,573	$ 23,649	$ 45,387	$ 49,574
Interest and dividends on investments	4,190	3,753	6,520	7,212
Total interest income	26,763	27,402	51,907	56,786
Interest expense	1,466	1,613	3,012	3,776
Net interest income	25,297	25,789	48,895	53,010
(Recapture) / provision for credit losses	(5,000)	2,100	(5,000)	2,750
Net interest income after provision for credit losses	30,297	23,689	53,895	50,260
Non-interest income
Mortgage banking	2,404	3,036	5,185	4,746
Card processing	1,211	917	2,282	1,624
Service charges on deposit accounts	651	763	1,343	1,543
Net gain on sale of investment securities		1,441	206	1,441
Other	1,026	(41)	1,658	502
Total non-interest income	5,292	6,116	10,674	9,856
Non-interest expense
Salaries and employee benefits	10,707	10,786	21,794	21,630
Occupancy, equipment and depreciation	1,209	831	2,404	2,370
Data processing	2,434	2,383	4,283	3,519
Marketing and advertising	330	339	636	771
FDIC premiums	247	165	473	165
Acquisition-related costs	2,215		2,215
Other	1,713	1,771	3,595	3,981
Total non-interest expense	18,855	16,275	35,400	32,436
Income before income tax expense	16,734	13,530	29,169	27,680
Income tax expense	4,034	3,192	7,031	6,569
Net income	$ 12,700	$ 10,338	$ 22,138	$ 21,111
Earnings per common share:
Basic	$ 0.67	$ 0.55	$ 1.17	$ 1.12
Diluted	$ 0.67	$ 0.55	$ 1.16	$ 1.11
Weighted average common shares outstanding:
Basic	18,876,688	18,789,561	18,870,626	18,837,209
Diluted	19,036,575	18,932,511	19,028,175	18,985,319

UNAUDITED CONSOLIDATED STATEM_2

UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME / (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 12,700	$ 10,338	$ 22,138	$ 21,111
Other comprehensive income
Unrealized holding gains / (loss) on securities available for sale	14,034	3,951	(23,286)	14,518
Reclassification adjustment for gains on available for sale securities		(1,441)	(206)	(1,441)
Net unrealized holding gains / (loss) on securities available for sale	14,034	2,510	(23,492)	13,077
Income tax (expense) / benefit	(3,508)	(627)	5,873	(3,270)
Other comprehensive income / (loss), net of tax	10,526	1,883	(17,619)	9,807
Total comprehensive income	$ 23,226	$ 12,221	$ 4,519	$ 30,918

UNAUDITED CONSOLIDATED STATEM_3

UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Shares	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance, beginning at Dec. 31, 2019	$ 332,362	$ 189	$ 87,913	$ 242,878	$ 1,382
Balance, beginning, Shares at Dec. 31, 2019		18,870,498
Net income	10,773			10,773
Other comprehensive income (loss)	7,924				7,924
Cash dividends	(2,646)			(2,646)
Reclass related to ASC 326 adoption (CECL) | ASU 2016-13	(6,680)			(6,680)
Shares repurchased	(2,140)	$ (1)	(2,139)
Shares repurchased, Shares		(120,906)
Share-based compensation	385		385
Issuance of shares under stock incentive plans	159		159
Issuance of shares under stock incentive plans, Shares		38,218
Balance, ending at Mar. 31, 2020	340,137	$ 188	86,318	244,325	9,306
Balance, ending, Shares at Mar. 31, 2020		18,787,810
Balance, beginning at Dec. 31, 2019	332,362	$ 189	87,913	242,878	1,382
Balance, beginning, Shares at Dec. 31, 2019		18,870,498
Net income	21,111
Balance, ending at Jun. 30, 2020	350,130	$ 188	86,721	252,032	11,189
Balance, ending, Shares at Jun. 30, 2020		18,793,217
Balance, beginning at Mar. 31, 2020	340,137	$ 188	86,318	244,325	9,306
Balance, beginning, Shares at Mar. 31, 2020		18,787,810
Net income	10,338			10,338
Other comprehensive income (loss)	1,883				1,883
Cash dividends	(2,631)			(2,631)
Share-based compensation	380		380
Issuance of shares under stock incentive plans	23		23
Issuance of shares under stock incentive plans, Shares		5,407
Balance, ending at Jun. 30, 2020	350,130	$ 188	86,721	252,032	11,189
Balance, ending, Shares at Jun. 30, 2020		18,793,217
Balance, beginning at Dec. 31, 2020	$ 371,138	$ 188	87,574	269,157	14,219
Balance, beginning, Shares at Dec. 31, 2020	18,828,522	18,828,522
Net income	$ 9,438			9,438
Other comprehensive income (loss)	(28,145)				(28,145)
Cash dividends	(2,830)			(2,830)
Share-based compensation	351		351
Issuance of shares under stock incentive plans	(81)	$ 1	(82)
Issuance of shares under stock incentive plans, Shares		45,399
Balance, ending at Mar. 31, 2021	349,871	$ 189	87,843	275,765	(13,926)
Balance, ending, Shares at Mar. 31, 2021		18,873,921
Balance, beginning at Dec. 31, 2020	$ 371,138	$ 188	87,574	269,157	14,219
Balance, beginning, Shares at Dec. 31, 2020	18,828,522	18,828,522
Net income	$ 22,138
Balance, ending at Jun. 30, 2021	$ 370,631	$ 189	88,209	285,633	(3,400)
Balance, ending, Shares at Jun. 30, 2021	18,880,610	18,880,610
Balance, beginning at Mar. 31, 2021	$ 349,871	$ 189	87,843	275,765	(13,926)
Balance, beginning, Shares at Mar. 31, 2021		18,873,921
Net income	12,700			12,700
Other comprehensive income (loss)	10,526				10,526
Cash dividends	(2,832)			(2,832)
Share-based compensation	343		343
Issuance of shares under stock incentive plans	23		23
Issuance of shares under stock incentive plans, Shares		6,689
Balance, ending at Jun. 30, 2021	$ 370,631	$ 189	$ 88,209	$ 285,633	$ (3,400)
Balance, ending, Shares at Jun. 30, 2021	18,880,610	18,880,610

UNAUDITED CONSOLIDATED STATEM_4

UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020
Statement Of Stockholders Equity [Abstract]
Cash dividends per share	$ 0.15	$ 0.15	$ 0.14	$ 0.14

UNAUDITED CONSOLIDATED STATEM_5

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities:
Net income	$ 22,138	$ 21,111
Adjustments to reconcile net income to net cash provided by operating activities:
(Recapture) / provision for credit losses	(5,000)	2,750
Depreciation and amortization	1,407	1,822
Deferred income taxes	1,475	(24)
Net amortization of securities premiums and discounts	9,411	1,541
Gain on sale of available for sale securities	(206)
Increase in cash surrender value of bank-owned life insurance	(514)	(293)
Share-based compensation	694	765
Gain on sale of loans held for sale	(3,878)	(3,467)
Originations of loans held for sale	(192,536)	(136,459)
Proceeds from sale of loans held for sale	203,894	129,332
Net changes in:
Accrued interest receivable	1,799	(3,778)
Other assets	238	(938)
Accrued interest payable	(291)	(138)
Other liabilities	(1,518)	1,552
Net cash provided by operating activities	37,113	13,776
Cash flows from investing activities:
Net change in loans held for investment	(178,086)	22,057
Purchase of available for sale securities	(663,600)	(674,709)
Proceeds from maturities/sales of available for sale securities	459,589	118,783
Purchase of premises and equipment	(534)	(1,354)
Proceeds from sale of OREO, net of improvements		343
Purchase of non-marketable equity securities	(5,891)	(267)
Proceeds from sale of non-marketable equity securities	4,739
Net cash used in investing activities	(383,783)	(535,147)
Cash flows from financing activities:
Net increase in deposits	240,399	556,972
(Costs) / Proceeds related to exercise of stock options	(58)	182
Net change in short-term borrowings	(64,554)	83,490
Net cash used in share repurchase program		(2,140)
Cash dividends paid	(5,662)	(5,277)
Net cash provided by financing activities	170,125	633,227
Net change in cash and cash equivalents	(176,545)	111,856
Cash and cash equivalents, beginning of period	239,874	211,981
Cash and cash equivalents, end of period	63,329	323,837
Supplemental disclosures of cash flow information:
Cash paid for interest	3,303	3,914
Income taxes paid	4,470	25
Supplemental disclosures of non-cash investing transactions:
Reclassifications from loans to other real estate owned		344
Net unrealized (loss) / gains on securities available for sale	$ (23,492)	$ 13,077

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	ALTABANCORP TM NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS Note 1 — Basis of Presentation and Significant Accounting Policies Nature of operations and basis of consolidation — Altabancorp TM (“ALTA”) is a Utah corporation headquartered in American Fork, Utah and is the bank holding company for Altabank TM (the “Bank” and together with ALTA, the “Company”). The Company operates all business activities through the Bank, which was organized in 1913. The Bank is a Utah state-chartered bank. The Bank operates under the jurisdiction of the Utah Department of Financial Institutions (“UDFI”), and its deposits are insured by the Federal Deposit Insurance Corporation (“FDIC”). The Bank is not a member of the Federal Reserve System; however, ALTA operates as a bank holding company under the Federal Bank Holding Company Act of 1956 and is the sole shareholder of the Bank. Both ALTA and the Bank are subject to periodic examination by these applicable federal and state regulatory agencies and file periodic reports and other information with the agencies. The Company considers the Bank to be its sole operating segment. The Bank is a community bank that provides highly personalized retail and commercial banking products and services to small-to-medium sized businesses and to individuals. Products and services are offered primarily through 25 retail branches located throughout Utah and southern Idaho. The accompanying unaudited interim consolidated financial statements include the accounts of ALTA together with its subsidiary Bank. All intercompany transactions and balances have been eliminated. These unaudited interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (the “SEC”). In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information and disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC and the accounting standards for interim financial statements. Use of estimates — The preparation of consolidated financial statements in conformity with GAAP requires the Company’s management (“Management”) to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reported period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for credit losses (“ACL”), the determination of the fair value of certain financial instruments, the valuation of real estate acquired through foreclosure, deferred income tax assets, and share-based compensation. Reclassifications — Certain reclassifications have been made to the 2020 Consolidated Financial Statements and/or schedules to conform to the 2021 presentation. These reclassifications may have affected certain ratios for the prior periods. The effect of these reclassifications is considered immaterial. Business combinations — Business combinations are accounted for using the acquisition method of accounting and, accordingly, assets acquired and liabilities assumed, both tangible and intangible, and consideration exchanged are recorded at fair value on the acquisition date. The excess purchase consideration over fair value of net assets acquired is recorded as goodwill. Expenses incurred in connection with a business combination are expensed as incurred. Changes in deferred tax asset valuation allowances related to acquired tax uncertainties are recognized in net income after the measurement period Note 1 — Basis of Presentation and Significant Accounting Policies – Continued Cash and cash equivalents — Cash and cash equivalents consist of cash on hand, amounts due from banks, interest bearing deposits, and federal funds sold, all of which have original maturities of three months or less. The Company places its cash with high credit quality institutions. The amounts on deposit fluctuate and, at times, exceed the insured limit by the FDIC, which potentially subjects the Company to credit risk. Investment securities — Investment securities are classified as held to maturity (“HTM”) when the Company has the positive intent and ability to hold the securities to maturity. Investment securities are classified as available for sale (“AFS”) when the Company has the intent of holding the security for an indefinite period of time, but not necessarily to maturity. The Company determines the appropriate classification at the time of purchase, and periodically thereafter. Investment securities classified as HTM are carried at amortized cost. Investment securities classified as AFS are reported at fair value. Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. Debt securities classified as held to maturity are carried at cost, net of the allowance for credit losses on debt securities, adjusted for amortization of premiums and discounts to the earliest callable date. Debt securities classified as available for sale are measured at fair value. Unrealized holding gains and losses on debt securities classified as available for sale are excluded from earnings and are reported net of tax as accumulated other comprehensive income (“AOCI”), a component of shareholders’ equity, until realized. When AFS securities, specifically identified, are sold, the unrealized gain or loss is reclassified from AOCI to non-interest income. Debt securities classified as trading are also measured at fair value. Unrealized holding gains and losses on securities classified as trading are included in earnings. FASB ASC Subtopic 326-30, Financial Instruments—Credit Losses—Available for Sale Debt Securities - describes the accounting for expected credit losses associated with AFS debt securities. Credit losses for AFS debt securities are evaluated as of each reporting date when the fair value is less than amortized cost. FASB ASC Subtopic 326-30 requires credit losses to be calculated individually, rather than collectively, using a discounted cash flow method, through which Management compares the present value of expected cash flows with the amortized cost basis of the security. An ACL is established, with a charge to the provision for credit losses (“PCL”), to reflect the credit loss component of the decline in fair value below amortized cost. If the fair value of the security increases over time, any ACL that has not been written off may be reversed through a credit to the PCL. The ACL for an available for sale debt security is limited by the amount that the fair value is less than the amortized cost, which is referred to as the fair value floor. If the Company intends to sell an AFS debt security or will more likely than not be required to sell the security before recovery of the amortized cost basis, the security’s ACL should be written off and the amortized cost basis of the security should be written down to its fair value at the reporting date with any incremental credit losses reported in income. A change during the reporting period in the non-credit component of any decline in fair value below amortized cost on an AFS debt security is reported in AOCI, net of applicable income taxes. The Company has excluded accrued interest receivable from the amortized cost of the debt securities and from the calculation of current expected credit losses. Each reporting period, Management reviews all AFS debt securities. If the debt securities are guaranteed by a Federal government agency or Federal government sponsored agency, Management believes that any change in the fair value of such securities is only related to changes in interest rates, and no ACL will be recorded. Management reviews the remaining debt securities by evaluating the credit rating provided by Nationally Recognized Statistical Ration Organizations (“NRSRO”). If the NRSRO credit rating is investment grade rated or higher, Management believes that any change in the fair value of such securities is only related to changes in interest rates, and no ACL will be recorded. If any remaining debt securities either have a NRSRO credit rating that is below investment grade or is unrated, Management will determine if an ACL should be recorded by comparing the net present value of expected cash flows with the amortized cost basis of the security with any difference recorded to ACL. Non-marketable equity securities — Non-marketable equity securities primarily consist of Federal Home Loan Bank (“FHLB”) stock. FHLB stock is restricted because such stock may only be sold to FHLB at its par value. Due to the restrictive terms, and the lack of a readily determinable market value, FHLB stock is carried at cost. The investments in FHLB stock are required investments related to the Bank’s borrowings from FHLB. FHLB obtains its funding primarily through issuance of consolidated obligations of the FHLB system. The U.S. Government does not guarantee these obligations, and each of the regional FHLBs are jointly and severally liable for repayment of each other’s obligations Note 1 — Basis of Presentation and Significant Accounting Policies – Continued Loans held for sale — Single-family residential mortgage loans originated with the intent to be sold in the secondary market are considered held for sale. Loans with best effort delivery commitments are carried at the lower of aggregate cost or estimated fair value. Loans under mandatory delivery commitments are carried at fair value to match changes in the value of the loans with the value of the economic hedges on the loans. Fair values for loans held for sale are determined by comparing actual loan rates to current secondary market prices for similar loans. Net unrealized losses on loans held for sale that are carried at lower of cost or market are recognized through the valuation allowance by charges to income. Mortgage loans held for sale are generally sold with the mortgage servicing rights. Gains or losses on sales of mortgage loans are recognized based on the difference between the selling price and the carrying value of the related mortgage loans sold. Loans held for investment — Loans that Management has the intent and ability to hold for the foreseeable future or until maturity or pay-off are reported at their outstanding principal balance adjusted for any charge-offs, the allowance for credit losses, any deferred fees or costs on originated loans, and unamortized premiums or discounts on acquired loans. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the effective interest method. The Company has excluded accrued interest receivable from the amortized cost of loans held for investment and from the calculation of current expected credit losses. Loans are placed on non-accrual status when they become 90 days or more past due or at such earlier time as Management determines timely recognition of interest to be in doubt. Accrual of interest is discontinued on a loan when Management believes, after considering economic and business conditions, collection efforts, and the borrower’s financial condition, that the borrower will be unable to make payments as they become due. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest income is subsequently recognized only to the extent cash payments are received, or payment is considered certain. Loans may be returned to accrual status when all delinquent interest and principal amounts contractually due are brought current and future payments are reasonably assured. Troubled debt restructuring — Expected credit losses on financial assets modified in troubled debt restructurings (“TDRs”) are estimated under the same current expected credit loss (“CECL”) methodology that is applied to other financial assets measured at amortized cost. Expected credit losses can be evaluated either on a collective basis or on an individual basis if a TDR does not share similar risk characteristics with other financial assets. FASB ASC Topic 326 allows an institution to use any appropriate loss estimation method to estimate ACLs for TDRs. However, there are circumstances when specific measurement methods are required. If a TDR is collateral-dependent, the ACL is estimated using the fair value of collateral. In addition, the expected effect of the modification (e.g., term extension or interest rate concession) will be included in the estimate of the ACL. Management will determine, support, and document how the Company identifies and estimates the effect of a reasonably expected TDR and how the Company estimates the related ACL. The Company may include the estimated effect of reasonably expected TDRs in its qualitative factor adjustments. The Coronavirus Aid, Relief, and Economic Security Act of 2020 (the “CARES Act”) and the Consolidated Appropriations Act 2021 (the “CAA”) provide guidance regarding modification of loans as a result of the COVID-19 pandemic, including that short-term modifications made on a good faith basis to borrowers who were current as defined under 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. To qualify as an eligible loan under the CARES Act, a loan modification must be: (1) related to COVID-19; (2) involve a loan that was not more than 30 days past due as of December 31, 2019; and (3) occur between March 1, 2020 and the earlier of (a) 60 days after the date of termination of the national emergency declared by the President or (b) December 31, 2020. The CAA extended the modification relief offered under the CARES Act through the earlier of January 1, 2022, or 60 days after the end of the national emergency declared by the President. Note 1 — Basis of Presentation and Significant Accounting Policies – Continued As a result, the Company has not recognized eligible loan modifications under the CARES Act as TDRs. Additionally, loans qualifying for such modification are not required to be reported as delinquent, nonaccrual, impaired, or criticized having resulted from the economic effects of the COVID-19 pandemic. Modifications include deferral of principal and interest payments, as well as interest only periods. The Company accrues and recognizes interest income on loans under payment relief based on the original contractual interest rates. When payments resume at the end of the relief period, loans are generally re-amortized with an extended maturity date to keep the monthly payment similar to before the COVID-related deferral occurred. Purchased credit-deteriorated assets – ASC Topic 326 introduces the concept of purchased credit-deteriorated (“PCD”) assets. PCD assets are acquired financial assets that, at acquisition, have experienced more-than-insignificant deterioration in credit quality since origination. PCD assets are recorded at fair value at the time of acquisitions. Subsequently, the amount of expected credit losses as of the acquisition date is added to the carrying value of the PCD assets with an offsetting entry to ACL. Any difference between the unpaid principal balance of the PCD assets and the amortized cost basis of the assets as of the acquisition date is the non-credit discount or premium. The initial ACL and non-credit discount or premium determined on a collective basis at that acquisition date will be allocated to the individual PCD assets. To the extent that Management changes the Company’s estimate of expected credit losses on PCD assets, the Company’s ACL will be increased or decreased with a corresponding entry to PCL. The non-credit discount recorded at acquisition will be accreted to interest income over the remaining life of the PCD assets on a level-yield basis. Purchased assets not credit deteriorated – ASC Topic 326 provides guidance regarding purchased assets that are not credit deteriorated (“Non-PCD”). Non-PCD assets are also recorded at fair value at the time of acquisition, including estimates of current expected credit losses. However, ASB ASC Topic 326 does not allow for expected credit losses as of the acquisition date to be added to the purchase price of Non-PCD assets with an offsetting entry to ACL. Current expected credit losses for Non-PCD loans are to be set aside in ACL with an offsetting entry to PCL. Expected credit losses included in the fair value of a Non-PCD loan are accreted to interest income over the remaining life of a Non-PCD loan on a level-yield basis. Allowance for credit losses – Loans — On January 1, 2020, the Company adopted Accounting Standard Update (“ASU”) No. 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The ASU significantly changed the accounting for credit loss measurement on loans and debt securities. The ASU requires a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The ACL is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected increase or decrease of expected credit losses that have taken place during the period. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. For loans and held to maturity debt securities, the ASU requires a CECL measurement to estimate the ACL for the remaining estimated life of the financial asset (including off-balance sheet credit exposures) using historical experience, current conditions, and reasonable and supportable forecasts. The ASU eliminated the existing guidance for Purchased Credit Impaired (“PCI”) loans but requires an allowance for purchased financial assets with more than an insignificant deterioration since origination, otherwise known as PCD assets. In addition, the ASU modified the other-than-temporary impairment (“OTTI”) model for available for sale debt securities to require an allowance for credit losses instead of a direct write-down, which allows for reversal of credit losses in future periods based on an improvement in credit. Note 1 — Basis of Presentation and Significant Accounting Policies – Continued Both the Federal Financial Institution Regulatory Agencies (“FFIRA”) and the Securities and Exchange Commission (“SEC”), confirmed that smaller, less complex organizations are not required to implement complex models, developed by outside vendors to calculate current expected credit losses. These agencies have noted that there is no expectation that a less complex entity should have to implement a sophisticated model to satisfy the requirements of Update 2016-13. If an entity is using a loss rate-based method today, that entity may be able to continue with a comparable method, including the WARM method. However, compared with the method it uses today to estimate incurred losses, the entity’s assumptions and inputs will need to change to arrive at an estimate for expected credit losses that contemplates the contractual term of the financial assets adjusted for prepayments as well as reasonable and supportable forecasts. Given the size of the organization, the Company has developed a CECL reserve model that uses the weighted average remaining maturity (“WARM”) methodology, adjusting for prepayments. The foundation of CECL modeling is the ability to estimate expected credit losses over the lifetime of a loan. The Company uses relevant available information about past events (e.g., historical losses), current conditions, and reasonable and supportable forecasts about future conditions. Historical losses serve as the starting point to estimate expected credit losses. The Company determined to use a “through-the-cycle” historical credit loss experience as its baseline for historical credit losses. The Company determined a representative period for a full credit cycle would be 2008 to 2017 (ten-year credit cycle). The Company has collected historical loss information on its own loan portfolio, as well as peer group information, by seventeen loan segments over this time horizon. The Company calculated WARM for seventeen loan segments using its Asset/Liability Management (“ALM”) models, which has been certified by independent specialists. Management has identified the following loan portfolio segments to evaluate and measure the Company’s ACL: Real estate term Construction and land development Commercial and industrial Residential and home equity Consumer and other The Company evaluates macroeconomic information, as well as internal trends in credit performance on the Company’s loan portfolio, to assist in determining current conditions and its economic forecast. The Company uses qualitative factors as defined by the Interagency Policy Statement on the Allowance for Loan and Lease Losses (the “Interagency Policy Statement”). The Interagency Policy Statement notes that after determining the appropriate historical loss rate for each group of loans with similar risk characteristics, management should consider those current qualitative or environmental factors that are likely to cause estimated credit losses as of the evaluation date to differ from the group’s historical loss experience. Institutions typically reflect the overall effect of these factors on a loan group as an adjustment that, as appropriate, increases or decreases the historical loss rate applied to the loan group. Alternatively, the effect of these factors may be reflected through separate standalone adjustments within the FAS 5 [superseded by ASC Topic 326] component of the ALLL. Both methods are consistent with GAAP provided the adjustments for qualitative or environmental factors are reasonably and consistently determined, are adequately documented, and represent estimated credit losses. For each group of loans, an institution should apply its adjusted historical loss rate, or its historical loss rate and separate standalone adjustments, to the recorded investment in the group when determining its estimated credit losses. Note 1 — Basis of Presentation and Significant Accounting Policies – Continued Management must exercise significant judgment when evaluating the effect of qualitative factors on the amount of the ALLL because data may not be reasonably available or directly applicable for management to determine the precise impact of a factor on the collectability of the institution’s loan portfolio as of the evaluation date. Accordingly, institutions should support adjustments to historical loss rates and explain how the adjustments reflect current information, events, circumstances, and conditions in the loss measurements. Management should maintain reasonable documentation to support which factors affected the analysis and the impact of those factors on the loss measurement. Support and documentation include descriptions of each factor, management’s analysis of how each factor has changed over time, which loan groups’ loss rates have been adjusted, the amount by which loss estimates have been adjusted for changes in conditions, an explanation of how management estimated the impact, and other available data that supports the reasonableness of the adjustments. Examples of underlying supporting evidence could include, but are not limited to, relevant articles from newspapers and other publications that describe economic events affecting a particular geographic area, economic reports and data, and notes from discussions with borrowers. As defined by the Interagency Policy Statement, the Company considers qualitative or environmental factors that are likely to cause estimated credit losses associated with the Company’s existing portfolio to differ from historical loss experience, as defined in the Interagency Guidance, including but not limited to: • Changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses. • Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments. • Changes in the nature and volume of the portfolio and in the terms of loans. • Changes in the experience, ability, and depth of lending management and other relevant staff. • Changes in the volume and severity of past due loans, the volume of nonaccrual loans, and the volume and severity of adversely classified or graded loans. • Changes in the quality of the institution’s loan review system. • Changes in the value of underlying collateral for collateral-dependent loans. • The existence and effect of any concentrations of credit, and changes in the levels of such concentrations. • The effect of other external factors, such as competition and legal and regulatory requirements, on the level of estimated credit losses in the institution’s existing portfolio. Charge-offs of loans are generally processed by policy as well as regulatory guidance. Secured consumer loans, including residential real estate loans, that are 120 days past due, are written down to the fair value of the collateral. Unsecured loans are charged-off once the loan is 120 days past due. Decisions on when to charge-off commercial loans and loans secured by commercial real estate are made on an individual basis rather than length of delinquency, though it is a factor in the decision. The financial resources of the borrower and/or guarantor and the nature and value of any collateral are other factors considered. Premises and equipment — Land is carried at cost. Premises and equipment are carried at cost, net of accumulated depreciation and amortization. Depreciation and amortization expense is computed using the straight-line method based on the estimated useful lives of the related assets below: Building and building improvements 15 to 40 years Leasehold improvements 3 to 15 years Furniture and equipment 3 to 15 years Computers, software and equipment 3 to 5 years Note 1 — Basis of Presentation and Significant Accounting Policies – Continued Maintenance and repairs are expensed as incurred while major additions and improvements are capitalized. Bank-owned life insurance (“BOLI”) — The Bank has purchased life insurance policies. These policies provide protection against the adverse financial effects that could result from the death of a key employee and provide tax-exempt income to offset expenses associated with the plans. It is the Bank’s intent to hold these policies as a long-term investment; however, there may be an income tax impact if the Bank chooses to surrender certain policies. Although the lives of individual current or former management-level employees are insured, the Bank is the owner and sole or partial beneficiary. BOLI is carried at the cash surrender value (“CSV”) of the underlying insurance contract. Changes in the CSV and any death benefits received in excess of the CSV are recognized as non-interest income. Goodwill — Goodwill represents the excess of the purchase considerations paid over the fair value of the assets acquired, net of the fair values of liabilities assumed in a business combination and is not amortized but is reviewed annually, or more frequently as current circumstances and conditions warrant, for impairment. An assessment of qualitative factors is completed to determine if it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If the qualitative analysis concludes that further analysis is required, then a quantitative impairment test would be completed. The quantitative goodwill impairment compares the reporting unit's estimated fair values, including goodwill, to its carrying amount. If the carrying amount exceeds its reporting unit’s fair value, then an impairment loss would be recognized as a charge to earnings but is limited by the amount of goodwill allocated to that reporting unit. Other intangible assets — Other intangible assets consist primarily of core deposit intangibles (“CDI”), which are amounts recorded in business combinations or deposit purchase transactions related to the value of transaction-related deposits and the value of the client relationships associated with the deposits. Core deposit intangibles are amortized over the estimated useful life of such deposits. These assets are reviewed at least annually for events or circumstances that could affect their recoverability. These events could include loss of the underlying core deposits, increased competition or adverse changes in the economy. To the extent other identifiable intangible assets are deemed unrecoverable, impairment losses are recorded in other non-interest expense to reduce the carrying amount of the assets. Mortgage and other servicing rights — Mortgage and other servicing rights are recognized as separate assets when rights are acquired through purchase of such rights or through the sale of loans. Generally, purchased servicing rights are capitalized at the cost to acquire the rights. For loans sold, the fair value of the servicing rights are estimated and capitalized. Fair value is based on market prices for comparable servicing rights contracts. Capitalized servicing rights are reported in other intangibles and are amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying financial assets. Other real estate owned (”OREO”) — Assets acquired through, or in lieu of, foreclosure are held for sale and are initially recorded at the lower of the carrying amount of the foreclosed loan or the fair value of the foreclosed asset, less costs to sell, at the date of foreclosure. Subsequent to foreclosure, Management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value, less selling costs. Revenues and expenses from operations and changes in the valuation allowance are included in other real estate owned expense. Transfers of financial assets — Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. Income taxes — Deferred income tax assets and deferred income tax liabilities represent the tax effect of temporary differences between financial reporting and tax reporting measured at enacted tax rates in effect for the year in which the differences are expected to reverse. The Company recognizes only the impact of tax positions that, based on their technical merits, are more likely than not to be sustained upon an audit by the taxing authority. Developing the provision for income taxes, including the effective tax rate and analysis of potential tax exposure items, if any, requires significant judgment and expertise in federal and state income tax laws, regulations and strategies, including the determi

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2021
Investments Debt And Equity Securities [Abstract]
Investment Securities	Note 2 — Investment Securities Amortized cost and estimated fair value of investment securities available for sale are summarized as follows: Gross Unrealized Losses Less 12 Gross Than Months Amortized Unrealized 12 or Fair (Dollars in thousands) Cost Gains Months Longer Value As of June 30, 2021 U.S. Government-sponsored securities $ 12,373 $ 252 $ (3 ) $ (3 ) $ 12,619 Municipal securities 30,140 989 - - 31,129 Mortgage-backed securities 1,448,728 7,677 (13,339 ) (4 ) 1,443,062 Corporate securities 5,000 9 - (112 ) 4,897 $ 1,496,241 $ 8,927 $ (13,342 ) $ (119 ) $ 1,491,707 As of December 31, 2020 U.S. Government-sponsored securities $ 12,844 $ 369 $ - $ (8 ) $ 13,205 Municipal securities 36,010 1,277 - - 37,287 Mortgage-backed securities 1,247,581 17,587 (134 ) (8 ) 1,265,026 Corporate securities 5,000 5 - (130 ) 4,875 $ 1,301,435 $ 19,238 $ (134 ) $ (146 ) $ 1,320,393 At June 30, 2021 and December 31, 2020, the gross unrealized losses and the fair value for securities available for sale were as follows: As of June 30, 2021 Less Than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Losses Value Losses Value Losses Available for Sale U.S. Government-sponsored securities $ 225 $ (3 ) $ 568 $ (3 ) $ 793 $ (6 ) Municipal securities - - - - - - Mortgage-backed securities 858,172 (13,339 ) 590 (4 ) 858,762 (13,343 ) Corporate securities - - 2,887 (112 ) 2,887 (112 ) $ 858,397 $ (13,342 ) $ 4,045 $ (119 ) $ 862,442 $ (13,461 ) As of December 31, 2020 Less Than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Losses Value Losses Value Losses Available for Sale U.S. Government-sponsored securities $ - $ - $ 777 $ (8 ) $ 777 $ (8 ) Municipal securities - - - - - - Mortgage-backed securities 76,978 (134 ) 1,785 (8 ) 78,763 (142 ) Corporate securities - - 2,870 (130 ) 2,870 (130 ) $ 76,978 $ (134 ) $ 5,432 $ (146 ) $ 82,410 $ (280 ) The Company monitors the credit quality of debt securities AFS through the use of credit ratings from NRSRO to assist in the determination of any current expected credit losses. At June 30, 2021, the Company had no allowance for credit losses on AFS securities. The following table summarizes the amortized cost of AFS debt securities at June 30, 2021, aggregated by credit quality indicator. Note 2 — Investment Securities – continued Gross Unrealized Losses Less 12 Gross Than Months Amortized Unrealized 12 or Fair (Dollars in thousands) Cost Gains Months Longer Value As of June 30, 2021 U.S. Government-backed securities (1) $ 1,461,101 $ 7,929 $ (13,342 ) $ (7 ) $ 1,455,681 Investment grade rating 28,651 785 - (112 ) 29,324 Below investment grade - - - - - Unrated investment securities 6,489 213 - - 6,702 $ 1,496,241 $ 8,927 $ (13,342 ) $ (119 ) $ 1,491,707 As of December 31, 2020 U.S. Government-sponsored securities (1) $ 1,260,425 $ 17,956 $ (134 ) $ (16 ) $ 1,278,231 Investment grade rating 33,063 1,008 - (130 ) 33,941 Below investment grade - - - - - Unrated investment securities 7,947 274 - - 8,221 $ 1,301,435 $ 19,238 $ (134 ) $ (146 ) $ 1,320,393 (1) Securities backed by the full faith and credit of the U.S. Government. The amortized cost and estimated fair value of investment securities that are available for sale at June 30, 2021, by contractual maturity, are as follows: Available For Sale Amortized Fair (Dollars in thousands) Cost Value Securities maturing in: One year or less $ 11,785 $ 11,882 After one year through five years 23,612 24,225 After five years through ten years 25,449 26,402 After ten years 1,435,395 1,429,198 $ 1,496,241 $ 1,491,707 Expected maturities may differ from contractual maturities because issuers may have the right to call obligations with or without penalties and other securities may experience pre-payments. As of June 30, 2021, the Company held 55 AFS investment securities with fair values less than amortized cost, compared to 21 at December 31, 2020. Management evaluated these investment securities and determined that the decline in value is temporary and related to the change in market interest rates since purchase. The decline in value is not related to any Company or industry specific event. The Company anticipates full recovery of the amortized cost with respect to these securities at maturity, or sooner in the event of a more favorable market interest rate environment. In addition, the Company had no HTM securities at June 30, 2021, and December 31, 2020. The Company so ld $ 131 million AFS securities during the six months ended June 30 , 202 1 , and recorded a $ million gain on sale of investment securities. The Company did no t se ll any AFS securities during the six months ended June 30 , 20 20 . There were no AFS securities in a nonaccrual status at June 30 , 20 2 1 or December 31, 20 20 .

Loans and Allowance for Credit

Loans and Allowance for Credit Losses	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Loans and Allowance for Credit Losses	Note 3 — Loans and Allowance for Credit Losses Loans are summarized as follows: June 30, December 31, (Dollars in thousands) 2021 2020 Loans held for investment: Commercial real estate loans: Real estate term $ 1,092,120 $ 1,021,880 Construction and land development 288,699 228,213 Total commercial real estate loans 1,380,819 1,250,093 Commercial and industrial loans 225,050 257,240 Consumer loans: Residential and home equity 265,680 185,470 Consumer and other 9,378 8,948 Total consumer loans 275,058 194,418 Total gross loans 1,880,927 1,701,751 Net deferred loan fees (7,242 ) (6,255 ) Total loans held for investment 1,873,685 1,695,496 Allowance for credit losses (34,958 ) (41,236 ) Total loans held for investment, net $ 1,838,727 $ 1,654,260 At June 30, 2021, the Company held 260 loans totaling $47.5 million of SBA PPP loans included in commercial and industrial loans above. The SBA guarantees 100% of the outstanding balance, and that guarantee is backed by the full faith and credit of the United States Government. SBA PPP loans have virtually no risk of loss and we expect the vast majority of the PPP loans to be fully forgiven by the SBA. Changes in the allowance for credit losses are as follows: Three Months Ended June 30, 2021 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period $ 19,820 $ 12,848 $ 5,756 $ 2,262 $ 327 $ 41,013 Provision for credit losses (4,653 ) (1,518 ) (756 ) 587 (41 ) (6,381 ) Gross loan charge-offs - - - - (20 ) (20 ) Recoveries - 1 284 20 41 346 Net loan (charge-offs) / recoveries - 1 284 20 21 326 Balance at end of period $ 15,167 $ 11,331 $ 5,284 $ 2,869 $ 307 $ 34,958 Three Months Ended June 30, 2020 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period, prior to adoption of ASC 326 $ 12,997 $ 13,677 $ 11,468 $ 2,553 $ 558 $ 41,253 Provision for credit losses (460 ) 1,452 905 211 (8 ) 2,100 Gross loan charge-offs (99 ) (43 ) (654 ) - (61 ) (857 ) Recoveries 69 35 41 3 39 187 Net loan (charge-offs) / recoveries (30 ) (8 ) (613 ) 3 (22 ) (670 ) Balance at end of period $ 12,507 $ 15,121 $ 11,760 $ 2,767 $ 528 $ 42,683 Note 3 — Loans and Allowance for Credit Losses – Continued Six Months Ended June 30, 2021 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period $ 20,627 $ 10,532 $ 8,095 $ 1,662 $ 320 $ 41,236 Provision for credit losses (5,460 ) 796 (2,863 ) 1,185 (39 ) (6,381 ) Gross loan charge-offs - - (922 ) - (68 ) (990 ) Recoveries - 3 974 22 94 1,093 Net loan (charge-offs) / recoveries - 3 52 22 26 103 Balance at end of period $ 15,167 $ 11,331 $ 5,284 $ 2,869 $ 307 $ 34,958 Six Months Ended June 30, 2020 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period $ 12,275 $ 6,990 $ 10,892 $ 1,118 $ 151 $ 31,426 Impact of adopting ASC 326 408 6,403 649 1,517 489 9,466 Provision for credit losses (132 ) 1,752 1,092 107 (69 ) 2,750 Gross loan charge-offs (113 ) (73 ) (1,040 ) - (183 ) (1,409 ) Recoveries 69 49 167 25 140 450 Net loan (charge-offs) / recoveries (44 ) (24 ) (873 ) 25 (43 ) (959 ) Balance at end of period $ 12,507 $ 15,121 $ 11,760 $ 2,767 $ 528 $ 42,683 Note 3 — Loans and Allowance for Credit Losses – Continued Non-accrual loans are summarized as follows: June 30, December 31, (Dollars in thousands) 2021 2020 Non-accrual loans, not troubled debt restructured: Real estate term $ 1,482 $ 150 Construction and land development - - Commercial and industrial loans 1,146 922 Residential and home equity 34 254 Consumer and other - - Total non-accrual loans, not troubled debt restructured 2,662 1,326 Troubled debt restructured loans, non-accrual: Real estate term 4,346 6,421 Construction and land development - - Commercial and industrial loans 224 1,272 Residential and home equity - - Consumer and other - - Total troubled debt restructured loans, non-accrual 4,570 7,693 Total non-accrual loans $ 7,232 $ 9,019 Non-performing assets as of June 30, 2021 and December 31, 2020 have not been reduced by U.S. Government guarantees of $4.0 million and $4.2 million, respectively. Troubled debt restructure loans are summarized as follows: June 30, December 31, (Dollars in thousands) 2021 2020 Accruing troubled debt restructured loans $ 209 $ 2,774 Non-accrual troubled debt restructured loans 4,570 7,693 Total troubled debt restructured loans $ 4,779 $ 10,467 As of June 30, 2021, TDRs totaling $5.9 million met the criteria to be delisted for reporting purposes. To be delisted as a TDR, the Company follows established regulatory guidelines. The below table summarize TDRs outstanding as of June 30, 2021, by year of occurrence: June 30, 2021 # of $ of # of Non- $ of Non- # of $ of Accruing Accruing accrual accrual Total Total (Dollars in thousands) TDR TDR TDR TDR TDR TDR 2021 - $ - - $ - - $ - 2020 1 10 - - 1 10 2019 1 199 5 4,570 6 4,769 2018 - - - - - - Thereafter - - - - - - Total 2 $ 209 5 $ 4,570 7 $ 4,779 Note 3 — Loans and Allowance for Credit Losses – Continued The following tables present TDRs that occurred during the periods presented by type of modification and the TDRs for which the payment default occurred within twelve months of the restructure date. A default on a TDR results in a transfer to nonaccrual status, a charge-off, or a combination of both. There were no new TDRs occurring during the six months ended June 30, 2021. Six Months Ended June 30, 2020 # of $ of # of Non- $ of Non- # of $ of Accruing Accruing accrual accrual Total Total (Dollars in thousands) TDR TDR TDR TDR TDR TDR Interest rate reduction - $ - - $ - - $ - Loan payment deferment - - 1 113 1 113 Loan re-amortization - - - - - - Loan extension - - - - - - Total - $ - 1 $ 113 1 $ 113 Six Months Ended June 30, 2020 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total TDRs that occurred during the period (1) Number of loans 1 - - - - 1 Pre-modification balance $ 113 $ - $ - $ - $ - $ 113 Post-modification balance $ 113 $ - $ - $ - $ - $ 113 TDRs that subsequently defaulted Number of loans 1 - - - - 1 Recorded balance $ 113 $ - $ - $ - $ - $ 113 (1) Since most loans were already considered classified and/or on non-accrual status prior to restructuring, the modifications did not have a material effect on the Company’s determination of the allowance for credit losses. Current and past due loans held for investment (accruing and non-accruing) are summarized as follows: June 30, 2021 30-89 Days 90+ Days Non- Total Total (Dollars in thousands) Current Past Due Past Due accrual Past Due Loans Commercial real estate: Real estate term $ 1,083,090 $ 3,202 $ - $ 5,828 $ 9,030 $ 1,092,120 Construction and land development 288,666 33 - - 33 288,699 Total commercial real estate 1,371,756 3,235 - 5,828 9,063 1,380,819 Commercial and industrial loans 221,904 1,776 - 1,370 3,146 225,050 Consumer: Residential and home equity 265,601 45 - 34 79 265,680 Consumer and other 9,141 237 - - 237 9,378 Total consumer 274,742 282 - 34 316 275,058 Total gross loans $ 1,868,402 $ 5,293 $ - $ 7,232 $ 12,525 $ 1,880,927 Note 3 — Loans and Allowance for Credit Losses – Continued December 31, 2020 30-89 Days 90+ Days Non- Total Total (Dollars in thousands) Current Past Due Past Due accrual Past Due Loans Commercial real estate: Real estate term $ 1,013,914 $ 1,395 $ - $ 6,571 $ 7,966 $ 1,021,880 Construction and land development 227,054 1,159 - - 1,159 228,213 Total commercial real estate 1,240,968 2,554 - 6,571 9,125 1,250,093 Commercial and industrial loans 253,833 1,170 43 2,194 3,407 257,240 Consumer: Residential and home equity 184,566 650 - 254 904 185,470 Consumer and other 8,703 243 2 - 245 8,948 Total consumer 193,269 893 2 254 1,149 194,418 Total gross loans $ 1,688,070 $ 4,617 $ 45 $ 9,019 $ 13,681 $ 1,701,751 Loans 90+ days past due in the table above are still accruing. Credit Quality Indicators: In addition to past due and non-accrual criteria, the Company also analyzes loans using a grading system. Performance-based grading follows the Company’s definitions of Pass, Special Mention, Substandard, and Doubtful, which are consistent with published definitions of regulatory risk classifications. Definitions of Pass, Special Mention, Substandard, and Doubtful are summarized as follows: Pass : A Pass asset is higher quality and does not fit any of the other categories described below. The likelihood of loss is considered remote. Special Mention : A Special Mention asset has potential weaknesses that may be temporary or, if left uncorrected, may result in a loss. While concerns exist, the Company is currently protected, and loss is considered unlikely and not imminent. Substandard : A Substandard asset is inadequately protected by the current sound net worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified have well defined weaknesses and are characterized by the distinct possibility that the Company may sustain some loss if deficiencies are not corrected. Doubtful : A Doubtful asset has all the weaknesses inherent in a Substandard asset with the added characteristics that the weaknesses make collection or liquidation in full highly questionable. For consumer loans, the Company generally assigns internal risk grades similar to those described above based on payment performance. Note 3 — Loans and Allowance for Credit Losses – Continued Outstanding loan balances (accruing and non-accruing) categorized by these credit quality indicators are summarized as follows: June 30, 2021 Special Total Total (Dollars in thousands) Pass Mention Substandard Doubtful Loans ACL Commercial real estate: Real estate term $ 1,049,629 $ 18,932 $ 23,559 $ - $ 1,092,120 $ 15,167 Construction and land development 288,319 380 - - 288,699 11,331 Total commercial real estate 1,337,948 19,312 23,559 - 1,380,819 26,498 Commercial and industrial loans 213,591 6,104 5,305 50 225,050 5,284 Consumer loans: Residential and home equity 264,643 - 1,037 - 265,680 2,869 Consumer and other 9,378 - - - 9,378 307 Total consumer 274,021 - 1,037 - 275,058 3,176 Total $ 1,825,560 $ 25,416 $ 29,901 $ 50 $ 1,880,927 $ 34,958 December 31, 2020 Special Total Total (Dollars in thousands) Pass Mention Substandard Doubtful Loans ACL Commercial real estate: Real estate term $ 978,945 $ 17,248 $ 25,687 $ - $ 1,021,880 $ 20,627 Construction and land development 224,066 3,785 362 - 228,213 10,532 Total commercial real estate 1,203,011 21,033 26,049 - 1,250,093 31,159 Commercial and industrial loans 247,983 4,348 4,020 889 257,240 8,095 Consumer loans: Residential and home equity 183,306 - 2,164 - 185,470 1,662 Consumer and other 8,948 - - - 8,948 320 Total consumer 192,254 - 2,164 - 194,418 1,982 Total $ 1,643,248 $ 25,381 $ 32,233 $ 889 $ 1,701,751 $ 41,236 Note 3 — Loans and Allowance for Credit Losses – Continued The following table represents outstanding loan balances by credit quality indicators and vintage year by class of financing receivable as of June 30, 2021: June 30, 2021 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Amortized Cost Total Loans held for investment: Commercial real estate: Real estate term Risk rating Pass $ 122,311 $ 256,571 $ 116,584 $ 75,650 $ 85,369 $ 209,569 $ 183,575 $ 1,049,629 Special mention - - - 653 3,086 13,851 1,342 18,932 Substandard - 1,223 2,755 2,408 1,407 4,462 11,304 23,559 Doubtful - - - - - - - - Total real estate term loans $ 122,311 $ 257,794 $ 119,339 $ 78,711 $ 89,862 $ 227,882 $ 196,221 $ 1,092,120 Construction and land development Risk rating Pass $ 7,390 $ 7,957 $ 2,817 $ 7,701 $ 949 $ 8,434 $ 253,071 $ 288,319 Special mention - - - - - - 380 380 Substandard - - - - - - - - Doubtful - - - - - - - - Total construction and land development loans $ 7,390 $ 7,957 $ 2,817 $ 7,701 $ 949 $ 8,434 $ 253,451 $ 288,699 Total commercial real estate loans $ 129,701 $ 265,751 $ 122,156 $ 86,412 $ 90,811 $ 236,316 $ 449,672 $ 1,380,819 Commercial and industrial loans Risk rating Pass $ 38,518 $ 38,488 $ 22,136 $ 21,649 $ 12,182 $ 42,699 $ 37,919 $ 213,591 Special mention - 28 - 2,304 755 108 2,909 6,104 Substandard - 102 602 1,178 431 1,471 1,521 5,305 Doubtful - - - 50 - - - 50 Total commercial and industrial loans $ 38,518 $ 38,618 $ 22,738 $ 25,181 $ 13,368 $ 44,278 $ 42,349 $ 225,050 Consumer: Residential real estate Risk rating Pass $ 105,999 $ 74,682 $ 20,901 $ 14,991 $ 14,251 $ 29,416 $ 4,403 $ 264,643 Special mention - - - - - - - - Substandard - 590 - 45 237 165 - 1,037 Doubtful - - - - - - - - Total residential real estate loans $ 105,999 $ 75,272 $ 20,901 $ 15,036 $ 14,488 $ 29,581 $ 4,403 $ 265,680 Consumer and other Risk rating Pass $ 4,043 $ 1,794 $ 1,400 $ 861 $ 424 $ 856 $ - $ 9,378 Special mention - - - - - - - - Substandard - - - - - - - - Doubtful - - - - - - - - Total consumer and other loans $ 4,043 $ 1,794 $ 1,400 $ 861 $ 424 $ 856 $ - $ 9,378 Total consumer loans $ 110,042 $ 77,066 $ 22,301 $ 15,897 $ 14,912 $ 30,437 $ 4,403 $ 275,058 Total gross loans $ 278,261 $ 381,435 $ 167,195 $ 127,490 $ 119,091 $ 311,031 $ 496,424 $ 1,880,927 Note 3 — Loans and Allowance for Credit Losses – Continued The following tables provide amortized cost basis less government guarantees of $3.8 million and $8.8 million for collateral dependent loans as of June 30, 2021 and December 31, 2020, respectively: June 30, 2021 Real Accounts (Dollars in thousands) Estate Receivable Equipment Livestock Auto Total Commercial real estate: Real estate term $ 1,871 $ - $ - $ - $ - $ 1,871 Construction and land development - - - - - - Total commercial real estate 1,871 - - - - 1,871 Commercial and industrial loans - 432 - - 50 482 Consumer: Residential and home equity 560 - - - - 560 Consumer and other - - - - - - Total consumer 560 - - - - 560 Total collateral dependent loans $ 2,431 $ 432 $ - $ - $ 50 $ 2,913 December 31, 2020 Real Accounts (Dollars in thousands) Estate Receivable Equipment Livestock Auto Total Commercial real estate: Real estate term $ 4,118 $ - $ - $ - $ - $ 4,118 Construction and land development 362 - - - - 362 Total commercial real estate 4,480 - - - - 4,480 Commercial and industrial loans - 1,165 - - 43 1,208 Consumer: Residential and home equity 216 - - - - 216 Consumer and other - - - - - - Total consumer 216 - - - - 216 Total collateral dependent loans $ 4,696 $ 1,165 $ - $ - $ 43 $ 5,904 The following table presents the changes in the accretable yield for non-PCD loans for the six months ended June 30, 2021 and 2020: Six Months Ended June 30, (Dollars in thousands) 2021 2020 Balance, beginning of period $ 2,803 $ 4,247 Accretion to interest income (532 ) (1,192 ) Reclassification from non-accretable difference - 402 Balance, end of period $ 2,271 $ 3,457 Loans and deposits to affiliates — The Company has entered into loan transactions with certain directors, principal shareholders, affiliated companies, and executive officers (“affiliates”). Such transactions were made in the ordinary course of business on substantially the same terms and conditions, including interest rates and collateral, as those prevailing at the same time for comparable transactions with other customers, and did not, in the opinion of management, involve more than normal credit risk or present other unfavorable features. Total outstanding loans with affiliates were approximately $17.2 million and $11.7 million as of June 30, 2021 and December 31, 2020, respectively. Available lines of credit for loans and credit cards to affiliates were approximately $10.9 million and $11.3 million as of June 30, 2021 and December 31, 2020, respectively. Deposits from affiliates were $23.4 million and $7.8 million as of June 30, 2021 and December 31, 2020, respectively.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 4 — Commitments and Contingencies Litigation contingencies — The Company is involved in various claims, legal actions, and complaints which arise in the ordinary course of business. In the Company’s opinion, all such matters are adequately covered by insurance, are without merit, or are of such kind, or involve such amounts, that unfavorable disposition would not have a material adverse effect on the financial condition or results of operations of the Company. Commitments to extend credit — In the normal course of business, the Company has outstanding commitments and contingent liabilities, such as commitments to extend credit and unused credit card lines, which are not included in the accompanying consolidated financial statements. The Company’s exposure to credit loss in the event of non-performance by other parties to the financial instruments for commitments to extend credit and unused credit card lines is represented by the contractual or notional amount of those instruments. The Company uses the same credit policies in making such commitments as it does for instruments that are included in the consolidated balance sheets. Contractual amounts of off-balance sheet financial instruments were as follows: June 30, December 31, (Dollars in thousands) 2021 2020 Commitments to extend credit, including unsecured commitments of $12,276 and $12,039 as of June 30, 2021 and December 31, 2020, respectively $ 813,317 $ 656,914 Stand-by letters of credit and bond commitments, including unsecured commitments of $1,079 and $727 as of June 30, 2021 and December 31, 2020, respectively 36,242 26,036 Unused credit card lines, all unsecured 29,237 29,111 Commitments to extend credit are agreements to lend to a client 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 to extend credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The amount of collateral obtained, if it is deemed necessary by the Company, is based on Management’s credit evaluation of the client. Unused credit card lines are commitments for possible future extensions of credit to existing clients. These lines of credit are uncollateralized and usually do not contain a specified maturity date and may not be drawn upon to the total extent to which the Company is committed.

Fair Value

Fair Value	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value	Note 5 — Fair Value The Company measures and discloses certain assets and liabilities at fair value. The standard requires the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value. These two types of inputs create the following fair value hierarchy: • Level 1 – Quoted prices in active markets for identical instruments. • Level 2 – Observable inputs other than Level 1 including quoted prices in active markets for similar instruments, quoted prices in less active markets for identical or similar instruments, or other observable inputs that can be corroborated by observable market data. • Level 3 – Unobservable inputs supported by little or no market activity for financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. The estimated fair value amounts of financial instruments have been determined by the Company using available market information and appropriate valuation methodologies. However, considerable judgment is required to interpret data to develop the estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize at a future date. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. In addition, reasonable comparability between financial institutions may not be likely due to the wide range of permitted valuation techniques and numerous estimates that must be made given the absence of active secondary markets for many of the financial instruments. This lack of uniform valuation methodologies also introduces a greater degree of subjectivity to these estimated fair values. Note 5 — Fair Value - Continued The following methods were used to estimate the fair value of each class of financial instruments: Cash and cash equivalents: The carrying amount of these items is a reasonable estimate of their fair value. Securities : The estimated fair values of investment securities are priced using current active market quotes, if available, which are considered Level 1 measurements. The Company utilizes matrix pricing to fair value most of its securities portfolio. Matrix pricing compares the relationship of each security to other benchmark quoted prices. These measurements are considered Level 2. Level 3 measurements were determined using discounted cash flow analyses based on the net present value of each security’s projected cash flows using observable market data for similar securities. Non-marketable securities : The fair value is based upon the redemption value of the stock, which equates to its carrying value. Loans held for sale : The carrying amount of these items is a reasonable estimate of their fair value. Loans held for investment : The fair value is estimated by discounting the future cash flows and estimated prepayments using the current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining term. Some loan types’ fair value approximated carrying value because of their floating rate or expected maturity characteristics. Deposits : The carrying amount of deposits with no stated maturity, such as savings and checking accounts, is a reasonable estimate of their fair value. The market value of certificates of deposit is based upon the discounted value of contractual cash flows. The discount rate is determined using the rates currently offered on comparable instruments. The following table presents estimated fair values of the Company’s financial instruments as of June 30, 2021 and December 31, 2020: June 30, 2021 December 31, 2020 Carrying Estimated Carrying Estimated (Dollars in thousands) Level Value Fair Value Value Fair Value Financial Assets: Cash and cash equivalents 1 $ 63,329 $ 63,329 $ 239,874 $ 239,874 Investment securities available for sale 2 1,485,005 1,485,005 1,312,172 1,312,172 Investment securities available for sale 3 6,702 6,702 8,221 8,221 Non-marketable securities 2 4,042 4,042 2,890 2,890 Loans held for sale 2 6,672 6,672 14,152 14,152 Loans held for investment 3 1,838,727 1,792,740 1,654,260 1,618,743 Financial Liabilities: Total deposits 2 $ 3,156,707 $ 2,862,951 $ 2,916,308 $ 2,751,715 Assets measured on a recurring and non-recurring basis are as follows: (Dollars in thousands) Level 1 Level 2 Level 3 Total As of June 30, 2021 Fair valued on a recurring basis: Investment securities available for sale $ - $ 1,485,005 $ 6,702 $ 1,491,707 Fair valued on a non-recurring basis: Individually evaluated loans - - 425 425 As of December 31, 2020 Fair valued on a recurring basis: Investment securities available for sale $ - $ 1,312,172 $ 8,221 $ 1,320,393 Fair valued on a non-recurring basis: Individually evaluated loans - - 1,804 1,804 Note 5 — Fair Value - Continued Non-recurring Measurements: Impaired loans are classified with Level 3 of the fair value hierarchy. The estimated fair value of impaired loans is based on the fair value of the collateral, less estimated costs to sell. The Company receives an appraisal or performs an evaluation for each impaired loan. The key inputs used to determine the fair value of impaired loans include selling costs, and adjustment to comparable collateral. Valuations and significant inputs obtained by independent sources are reviewed by the Company for accuracy and reasonableness. Appraisals are typically obtained at least on an annual basis. The Company also considers other factors and events that may affect the fair value. The appraisals or evaluations are reviewed at least on a quarterly basis to determine if any adjustments are needed. After review and acceptance of the appraisal or evaluation, adjustments to impaired loans may occur.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Note 6 — Income Taxes Income tax expense was $4.0 million and $3.2 million for the three months ended June 30, 2021 and 2020, respectively. The Company’s effective tax rate for the second quarter of 2021 was 24.1%, compared with 23.6% in the second quarter of 2020. Income tax expense was $7.0 million and $6.6 million for the six months ended June 30, 2021 and 2020, respectively. The Company’s effective tax rate for the six months ended June 30, 2021 was 24.1% compared with 23.7% in the six months ended June 30, 2020.

Regulatory Capital Matters

Regulatory Capital Matters	6 Months Ended
	Jun. 30, 2021
Regulatory Capital Requirements [Abstract]
Regulatory Capital Matters	Note 7 — Regulatory Capital Matters The Company is subject to various regulatory capital requirements administered by its primary federal regulator, the FDIC. Failure to meet the minimum regulatory capital requirements can initiate certain mandatory and possible additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company and its consolidated financial statements. Under the regulatory capital adequacy guidelines and regulatory framework for prompt corrective action, the Company must meet specific capital guidelines involving quantitative measures of the Company’s assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification under the prompt corrective action guidelines are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. As of June 30, 2021, the Company was categorized as well capitalized under the regulatory framework. To be categorized as well capitalized, an institution must maintain minimum common Tier 1 (“CET1”), Tier 1 risk-based capital, total risk-based capital, and Tier 1 to average assets (“Tier 1 Leverage”) capital ratios as disclosed in the table below. The Company’s actual and required capital amounts and ratios are as follows: June 30, 2021 Minimum Capital Well Capitalized Actual Requirement Requirement (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Consolidated CET1 Capital to Risk-Weighted Assets $ 346,137 16.91 % $ 92,093 4.50 % $ 133,024 6.50 % Tier 1 Capital to Risk-Weighted Assets 346,137 16.91 % 122,791 6.00 % 163,721 8.00 % Total Risk-Based Capital to Risk-Weighted Assets 371,877 18.17 % 163,721 8.00 % 204,652 10.00 % Tier 1 Leverage 346,137 9.84 % 140,640 4.00 % NA NA Altabank TM CET1 Capital to Risk-Weighted Assets $ 339,013 16.57 % $ 92,045 4.50 % $ 132,954 6.50 % Tier 1 Capital to Risk-Weighted Assets 339,013 16.57 % 122,727 6.00 % 163,636 8.00 % Total Risk-Based Capital to Risk-Weighted Assets 364,740 17.83 % 163,636 8.00 % 204,545 10.00 % Tier 1 Leverage 339,013 9.64 % 140,664 4.00 % 175,830 5.00 % Note 7 — Regulatory Capital Matters - Continued December 31, 2020 Minimum Capital Well Capitalized Actual Requirement Requirement (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Consolidated CET1 Capital to Risk-Weighted Assets $ 329,049 17.91 % $ 82,679 4.50 % $ 119,426 6.50 % Tier 1 Capital to Risk-Weighted Assets 329,049 17.91 % 110,239 6.00 % 146,985 8.00 % Total Risk-Based Capital to Risk-Weighted Assets 352,266 19.17 % 146,985 8.00 % 183,732 10.00 % Tier 1 Leverage 329,049 10.47 % 125,681 4.00 % NA NA Altabank TM CET1 Capital to Risk-Weighted Assets $ 322,783 17.59 % $ 82,578 4.50 % $ 119,280 6.50 % Tier 1 Capital to Risk-Weighted Assets 322,783 17.59 % 110,104 6.00 % 146,806 8.00 % Total Risk-Based Capital to Risk-Weighted Assets 345,973 18.85 % 146,806 8.00 % 183,507 10.00 % Tier 1 Leverage 322,793 10.18 % 126,795 4.00 % 158,493 5.00 % Federal Reserve Board Regulations require maintenance of certain minimum reserve balances based on certain average deposits. On March 15, 2020, the Board of Governors of the Federal Reserve reduced reserve requirement ratios to zero percent effective March 26, 2020. This action eliminated reserve requirements for all depository institutions. The Company’s Board of Directors (the “Board”) may declare a cash or stock dividend out of retained earnings provided the regulatory minimum capital ratios are met. The Company plans to maintain capital ratios that meet the well-capitalized standards per the regulations and, therefore, dividend amounts may be correspondingly limited.

Incentive Share-Based Plan and

Incentive Share-Based Plan and Other Employee Benefits	6 Months Ended
	Jun. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Incentive Share-Based Plan and Other Employee Benefits	Note 8 — Incentive Share-Based Plan and Other Employee Benefits In May 2020, on approval by and at the recommendation of the Board, ALTA’s shareholders approved a share-based incentive plan (the “Plan”). The effective date of the Plan was May 27, 2020 (the “Effective Date”). The Plan provides for various share-based incentive awards, including incentive share-based options, non-qualified share-based options, restricted shares, and stock appreciation rights to be granted to officers, directors, and other employees. The maximum aggregate number of shares that may be issued under the Plan is 1,000,000 common shares. The share-based awards are granted to participants under the Plan at a price not less than the fair value on the date of grant and for terms of up to ten years. The Plan also allows for granting of share-based awards to directors and consultants who are not employees of the Company. During the six months ended June 30, 2021, the Company granted 64,402 restricted stock units (“RSUs”) at a weighted-average fair value of $28.05 per unit. All awards granted after the Effective Date and through June 30, 2021, have been under the Plan. The RSUs generally vest over periods from one to three years. The Company recorded share-based compensation expense of $694,000 and $765,000 for the six months ended June 30, 2021 and 2020, respectively. Additionally, the Company did not grant any options for the purchase of common shares during the six months ended June 30, 2021 and 2020, respectively. Outstanding RSU grants will vest on an accelerated basis upon closing of the pending merger transaction, details of which are provided in Note 9 – Merger Agreement below.

Merger Agreement

Merger Agreement	6 Months Ended
	Jun. 30, 2021
Business Combinations [Abstract]
Merger Agreement	Note 9 – Merger Agreement On May 18, 2021, the Company and the “Bank, entered into a Plan and Agreement of Merger (the “Merger Agreement”) with Glacier Bancorp, Inc., a Montana corporation (“GBCI”), and its wholly owned subsidiary, Glacier Bank, a Montana state-chartered bank. Under the terms of the Merger Agreement, the Company will merge with and into GBCI, with GBCI as the surviving entity (the “Holding Company Merger”). Immediately thereafter, the Bank will merge with and into Glacier Bank, with Glacier Bank surviving as a wholly owned subsidiary of GBCI (the “Bank Merger”). Note 9 – Merger Agreement – Continued Subject to the terms and conditions of the Merger Agreement, at the date and time when the Holding Company Merger becomes effective (the “Effective Time”), each share of the Company’s common stock issued and outstanding will be converted into the right to receive from GBCI 0.7971 shares of GBCI’s common stock, subject to potential adjustment as follows, in each case, as further described in the Merger Agreement (the “ Merger Consideration • If the average closing price of GBCI common stock calculated in accordance with the Merger Agreement exceeds $74.15, GBCI may elect to terminate the Merger Agreement, unless the Company elects to accept a decrease in the number of shares to be issued on a per-share basis, in order to avoid termination of the Merger Agreement. • If the average closing price of GBCI common stock is less than $49.43, the Company may terminate the Merger Agreement, unless GBCI elects to increase on a per-share basis the number of shares of GBCI common stock in order to avoid termination of the Merger Agreement. • If AB Closing Capital (as defined in the Merger Agreement), after being further adjusted in accordance with the terms of the Merger Agreement, is less than $342,937,000 (subject to specified adjustments as set forth in the Merger Agreement), the per share stock consideration will be reduced on a per share basis in accordance with the formula set forth in the Merger Agreement. Holders of the Company’s common stock will also be entitled to receive cash in lieu of fractional shares of the Company’s common stock. Under the terms of the Merger Agreement, immediately prior to the Effective Time, each outstanding restricted stock unit under the People’s Utah Bancorp 2014 Incentive Plan, the Altabancorp 2020 Equity Incentive Plan and the People’s Utah Bancorp Amended and Restated 2008 Stock Incentive Plan (the “Company Stock Plans”) will automatically vest and be settled, and each share of the Company’s common stock issued as a result will have the right to receive the Merger Consideration and cash in lieu of fractional shares of the Company’s common stock at the Effective Time. Outstanding options to purchase shares of the Company’s common stock under the Company Stock Plans (the “Company Options”), whether vested or unvested, will be automatically canceled at the Effective Time, and the holders of Company Options will be paid in cash an amount per share equal to the spread, if any, between (a) the product of the GBCI Average Closing Price (as defined in the Merger Agreement) multiplied by the Merger Consideration (the “Total Consideration Value Per Share”) and (b) the exercise price per share of such Company Option, net of any cash which must be withheld under applicable tax laws. Any Company Option that has an exercise price per share that is greater than the Total Consideration Value Per Share will be cancelled without any payment. Consummation of the Holding Company Merger is subject to the receipt of required regulatory approvals, and certain other customary conditions of closing, including, among others (a) approval of the Merger Agreement and the Holding Company Merger by the Company’s shareholders, (b) the absence of any actual or threatened action or proceeding to restrain, prohibit or invalidate the Holding Company Merger, (c) subject to certain exceptions, the accuracy of the representations and warranties of the Company, in the case of GBCI, and GBCI, in the case of the Company, (d) performance in all material respects by the Company, in the case of GBCI, and GBCI, in the case of the Company, of its respective obligations under the Merger Agreement, (e) the absence of an event that has had or would reasonably be expected to have a Material Adverse Effect (as defined in the Merger Agreement), on the Company, in the case of GBCI, and GBCI, in the case of the Company, (f) in the case of GBCI’s obligation to complete the Holding Company Merger, receipt by GBCI of an opinion from its counsel to the effect that the Holding Company Merger will be a reorganization within the meaning of Section 368(a) of the Internal Revenue Code of 1986, as amended, and (g) in the case of the Company’s obligation to complete the Holding Company Merger, the receipt of a similar opinion from its counsel. During the second quarter of 2021, the Company incurred approximately $2.2 million of expenses associated with the Holding Company Merger. These expenses are recorded in acquisition-related costs.

Basis of Presentation and Sig_2

Basis of Presentation and Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Nature of Operations and Basis of Consolidation	Nature of operations and basis of consolidation — Altabancorp TM (“ALTA”) is a Utah corporation headquartered in American Fork, Utah and is the bank holding company for Altabank TM (the “Bank” and together with ALTA, the “Company”). The Company operates all business activities through the Bank, which was organized in 1913. The Bank is a Utah state-chartered bank. The Bank operates under the jurisdiction of the Utah Department of Financial Institutions (“UDFI”), and its deposits are insured by the Federal Deposit Insurance Corporation (“FDIC”). The Bank is not a member of the Federal Reserve System; however, ALTA operates as a bank holding company under the Federal Bank Holding Company Act of 1956 and is the sole shareholder of the Bank. Both ALTA and the Bank are subject to periodic examination by these applicable federal and state regulatory agencies and file periodic reports and other information with the agencies. The Company considers the Bank to be its sole operating segment. The Bank is a community bank that provides highly personalized retail and commercial banking products and services to small-to-medium sized businesses and to individuals. Products and services are offered primarily through 25 retail branches located throughout Utah and southern Idaho. The accompanying unaudited interim consolidated financial statements include the accounts of ALTA together with its subsidiary Bank. All intercompany transactions and balances have been eliminated. These unaudited interim consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (the “SEC”). In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information and disclosures normally included in annual financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to the rules and regulations of the SEC and the accounting standards for interim financial statements.
Use of Estimates	Use of estimates — The preparation of consolidated financial statements in conformity with GAAP requires the Company’s management (“Management”) to make estimates and assumptions. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reported period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term relate to the determination of the allowance for credit losses (“ACL”), the determination of the fair value of certain financial instruments, the valuation of real estate acquired through foreclosure, deferred income tax assets, and share-based compensation.
Reclassifications	Reclassifications — Certain reclassifications have been made to the 2020 Consolidated Financial Statements and/or schedules to conform to the 2021 presentation. These reclassifications may have affected certain ratios for the prior periods. The effect of these reclassifications is considered immaterial.
Business Combinations	Business combinations — Business combinations are accounted for using the acquisition method of accounting and, accordingly, assets acquired and liabilities assumed, both tangible and intangible, and consideration exchanged are recorded at fair value on the acquisition date. The excess purchase consideration over fair value of net assets acquired is recorded as goodwill. Expenses incurred in connection with a business combination are expensed as incurred. Changes in deferred tax asset valuation allowances related to acquired tax uncertainties are recognized in net income after the measurement period
Cash and Cash Equivalents	Cash and cash equivalents — Cash and cash equivalents consist of cash on hand, amounts due from banks, interest bearing deposits, and federal funds sold, all of which have original maturities of three months or less. The Company places its cash with high credit quality institutions. The amounts on deposit fluctuate and, at times, exceed the insured limit by the FDIC, which potentially subjects the Company to credit risk.
Investment Securities	Investment securities — Investment securities are classified as held to maturity (“HTM”) when the Company has the positive intent and ability to hold the securities to maturity. Investment securities are classified as available for sale (“AFS”) when the Company has the intent of holding the security for an indefinite period of time, but not necessarily to maturity. The Company determines the appropriate classification at the time of purchase, and periodically thereafter. Investment securities classified as HTM are carried at amortized cost. Investment securities classified as AFS are reported at fair value. Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities. Debt securities classified as held to maturity are carried at cost, net of the allowance for credit losses on debt securities, adjusted for amortization of premiums and discounts to the earliest callable date. Debt securities classified as available for sale are measured at fair value. Unrealized holding gains and losses on debt securities classified as available for sale are excluded from earnings and are reported net of tax as accumulated other comprehensive income (“AOCI”), a component of shareholders’ equity, until realized. When AFS securities, specifically identified, are sold, the unrealized gain or loss is reclassified from AOCI to non-interest income. Debt securities classified as trading are also measured at fair value. Unrealized holding gains and losses on securities classified as trading are included in earnings. FASB ASC Subtopic 326-30, Financial Instruments—Credit Losses—Available for Sale Debt Securities - describes the accounting for expected credit losses associated with AFS debt securities. Credit losses for AFS debt securities are evaluated as of each reporting date when the fair value is less than amortized cost. FASB ASC Subtopic 326-30 requires credit losses to be calculated individually, rather than collectively, using a discounted cash flow method, through which Management compares the present value of expected cash flows with the amortized cost basis of the security. An ACL is established, with a charge to the provision for credit losses (“PCL”), to reflect the credit loss component of the decline in fair value below amortized cost. If the fair value of the security increases over time, any ACL that has not been written off may be reversed through a credit to the PCL. The ACL for an available for sale debt security is limited by the amount that the fair value is less than the amortized cost, which is referred to as the fair value floor. If the Company intends to sell an AFS debt security or will more likely than not be required to sell the security before recovery of the amortized cost basis, the security’s ACL should be written off and the amortized cost basis of the security should be written down to its fair value at the reporting date with any incremental credit losses reported in income. A change during the reporting period in the non-credit component of any decline in fair value below amortized cost on an AFS debt security is reported in AOCI, net of applicable income taxes. The Company has excluded accrued interest receivable from the amortized cost of the debt securities and from the calculation of current expected credit losses. Each reporting period, Management reviews all AFS debt securities. If the debt securities are guaranteed by a Federal government agency or Federal government sponsored agency, Management believes that any change in the fair value of such securities is only related to changes in interest rates, and no ACL will be recorded. Management reviews the remaining debt securities by evaluating the credit rating provided by Nationally Recognized Statistical Ration Organizations (“NRSRO”). If the NRSRO credit rating is investment grade rated or higher, Management believes that any change in the fair value of such securities is only related to changes in interest rates, and no ACL will be recorded. If any remaining debt securities either have a NRSRO credit rating that is below investment grade or is unrated, Management will determine if an ACL should be recorded by comparing the net present value of expected cash flows with the amortized cost basis of the security with any difference recorded to ACL.
Non-Marketable Equity Securities	Non-marketable equity securities — Non-marketable equity securities primarily consist of Federal Home Loan Bank (“FHLB”) stock. FHLB stock is restricted because such stock may only be sold to FHLB at its par value. Due to the restrictive terms, and the lack of a readily determinable market value, FHLB stock is carried at cost. The investments in FHLB stock are required investments related to the Bank’s borrowings from FHLB. FHLB obtains its funding primarily through issuance of consolidated obligations of the FHLB system. The U.S. Government does not guarantee these obligations, and each of the regional FHLBs are jointly and severally liable for repayment of each other’s obligations
Loans Held for Sale	Loans held for sale — Single-family residential mortgage loans originated with the intent to be sold in the secondary market are considered held for sale. Loans with best effort delivery commitments are carried at the lower of aggregate cost or estimated fair value. Loans under mandatory delivery commitments are carried at fair value to match changes in the value of the loans with the value of the economic hedges on the loans. Fair values for loans held for sale are determined by comparing actual loan rates to current secondary market prices for similar loans. Net unrealized losses on loans held for sale that are carried at lower of cost or market are recognized through the valuation allowance by charges to income. Mortgage loans held for sale are generally sold with the mortgage servicing rights. Gains or losses on sales of mortgage loans are recognized based on the difference between the selling price and the carrying value of the related mortgage loans sold.
Loans Held for Investment	Loans held for investment — Loans that Management has the intent and ability to hold for the foreseeable future or until maturity or pay-off are reported at their outstanding principal balance adjusted for any charge-offs, the allowance for credit losses, any deferred fees or costs on originated loans, and unamortized premiums or discounts on acquired loans. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the effective interest method. The Company has excluded accrued interest receivable from the amortized cost of loans held for investment and from the calculation of current expected credit losses. Loans are placed on non-accrual status when they become 90 days or more past due or at such earlier time as Management determines timely recognition of interest to be in doubt. Accrual of interest is discontinued on a loan when Management believes, after considering economic and business conditions, collection efforts, and the borrower’s financial condition, that the borrower will be unable to make payments as they become due. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest income is subsequently recognized only to the extent cash payments are received, or payment is considered certain. Loans may be returned to accrual status when all delinquent interest and principal amounts contractually due are brought current and future payments are reasonably assured.
Troubled Debt Restructurings	Troubled debt restructuring — Expected credit losses on financial assets modified in troubled debt restructurings (“TDRs”) are estimated under the same current expected credit loss (“CECL”) methodology that is applied to other financial assets measured at amortized cost. Expected credit losses can be evaluated either on a collective basis or on an individual basis if a TDR does not share similar risk characteristics with other financial assets. FASB ASC Topic 326 allows an institution to use any appropriate loss estimation method to estimate ACLs for TDRs. However, there are circumstances when specific measurement methods are required. If a TDR is collateral-dependent, the ACL is estimated using the fair value of collateral. In addition, the expected effect of the modification (e.g., term extension or interest rate concession) will be included in the estimate of the ACL. Management will determine, support, and document how the Company identifies and estimates the effect of a reasonably expected TDR and how the Company estimates the related ACL. The Company may include the estimated effect of reasonably expected TDRs in its qualitative factor adjustments. The Coronavirus Aid, Relief, and Economic Security Act of 2020 (the “CARES Act”) and the Consolidated Appropriations Act 2021 (the “CAA”) provide guidance regarding modification of loans as a result of the COVID-19 pandemic, including that short-term modifications made on a good faith basis to borrowers who were current as defined under 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. To qualify as an eligible loan under the CARES Act, a loan modification must be: (1) related to COVID-19; (2) involve a loan that was not more than 30 days past due as of December 31, 2019; and (3) occur between March 1, 2020 and the earlier of (a) 60 days after the date of termination of the national emergency declared by the President or (b) December 31, 2020. The CAA extended the modification relief offered under the CARES Act through the earlier of January 1, 2022, or 60 days after the end of the national emergency declared by the President. Note 1 — Basis of Presentation and Significant Accounting Policies – Continued As a result, the Company has not recognized eligible loan modifications under the CARES Act as TDRs. Additionally, loans qualifying for such modification are not required to be reported as delinquent, nonaccrual, impaired, or criticized having resulted from the economic effects of the COVID-19 pandemic. Modifications include deferral of principal and interest payments, as well as interest only periods. The Company accrues and recognizes interest income on loans under payment relief based on the original contractual interest rates. When payments resume at the end of the relief period, loans are generally re-amortized with an extended maturity date to keep the monthly payment similar to before the COVID-related deferral occurred.
Purchased Credit-Deteriorated Assets	Purchased credit-deteriorated assets – ASC Topic 326 introduces the concept of purchased credit-deteriorated (“PCD”) assets. PCD assets are acquired financial assets that, at acquisition, have experienced more-than-insignificant deterioration in credit quality since origination. PCD assets are recorded at fair value at the time of acquisitions. Subsequently, the amount of expected credit losses as of the acquisition date is added to the carrying value of the PCD assets with an offsetting entry to ACL. Any difference between the unpaid principal balance of the PCD assets and the amortized cost basis of the assets as of the acquisition date is the non-credit discount or premium. The initial ACL and non-credit discount or premium determined on a collective basis at that acquisition date will be allocated to the individual PCD assets. To the extent that Management changes the Company’s estimate of expected credit losses on PCD assets, the Company’s ACL will be increased or decreased with a corresponding entry to PCL. The non-credit discount recorded at acquisition will be accreted to interest income over the remaining life of the PCD assets on a level-yield basis.
Purchased Assets Not Credit Deteriorated	Purchased assets not credit deteriorated – ASC Topic 326 provides guidance regarding purchased assets that are not credit deteriorated (“Non-PCD”). Non-PCD assets are also recorded at fair value at the time of acquisition, including estimates of current expected credit losses. However, ASB ASC Topic 326 does not allow for expected credit losses as of the acquisition date to be added to the purchase price of Non-PCD assets with an offsetting entry to ACL. Current expected credit losses for Non-PCD loans are to be set aside in ACL with an offsetting entry to PCL. Expected credit losses included in the fair value of a Non-PCD loan are accreted to interest income over the remaining life of a Non-PCD loan on a level-yield basis.
Allowance for Credit Losses - Loans	Allowance for credit losses – Loans — On January 1, 2020, the Company adopted Accounting Standard Update (“ASU”) No. 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” The ASU significantly changed the accounting for credit loss measurement on loans and debt securities. The ASU requires a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The ACL is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The income statement reflects the measurement of credit losses for newly recognized financial assets, as well as the expected increase or decrease of expected credit losses that have taken place during the period. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. For loans and held to maturity debt securities, the ASU requires a CECL measurement to estimate the ACL for the remaining estimated life of the financial asset (including off-balance sheet credit exposures) using historical experience, current conditions, and reasonable and supportable forecasts. The ASU eliminated the existing guidance for Purchased Credit Impaired (“PCI”) loans but requires an allowance for purchased financial assets with more than an insignificant deterioration since origination, otherwise known as PCD assets. In addition, the ASU modified the other-than-temporary impairment (“OTTI”) model for available for sale debt securities to require an allowance for credit losses instead of a direct write-down, which allows for reversal of credit losses in future periods based on an improvement in credit. Note 1 — Basis of Presentation and Significant Accounting Policies – Continued Both the Federal Financial Institution Regulatory Agencies (“FFIRA”) and the Securities and Exchange Commission (“SEC”), confirmed that smaller, less complex organizations are not required to implement complex models, developed by outside vendors to calculate current expected credit losses. These agencies have noted that there is no expectation that a less complex entity should have to implement a sophisticated model to satisfy the requirements of Update 2016-13. If an entity is using a loss rate-based method today, that entity may be able to continue with a comparable method, including the WARM method. However, compared with the method it uses today to estimate incurred losses, the entity’s assumptions and inputs will need to change to arrive at an estimate for expected credit losses that contemplates the contractual term of the financial assets adjusted for prepayments as well as reasonable and supportable forecasts. Given the size of the organization, the Company has developed a CECL reserve model that uses the weighted average remaining maturity (“WARM”) methodology, adjusting for prepayments. The foundation of CECL modeling is the ability to estimate expected credit losses over the lifetime of a loan. The Company uses relevant available information about past events (e.g., historical losses), current conditions, and reasonable and supportable forecasts about future conditions. Historical losses serve as the starting point to estimate expected credit losses. The Company determined to use a “through-the-cycle” historical credit loss experience as its baseline for historical credit losses. The Company determined a representative period for a full credit cycle would be 2008 to 2017 (ten-year credit cycle). The Company has collected historical loss information on its own loan portfolio, as well as peer group information, by seventeen loan segments over this time horizon. The Company calculated WARM for seventeen loan segments using its Asset/Liability Management (“ALM”) models, which has been certified by independent specialists. Management has identified the following loan portfolio segments to evaluate and measure the Company’s ACL: Real estate term Construction and land development Commercial and industrial Residential and home equity Consumer and other The Company evaluates macroeconomic information, as well as internal trends in credit performance on the Company’s loan portfolio, to assist in determining current conditions and its economic forecast. The Company uses qualitative factors as defined by the Interagency Policy Statement on the Allowance for Loan and Lease Losses (the “Interagency Policy Statement”). The Interagency Policy Statement notes that after determining the appropriate historical loss rate for each group of loans with similar risk characteristics, management should consider those current qualitative or environmental factors that are likely to cause estimated credit losses as of the evaluation date to differ from the group’s historical loss experience. Institutions typically reflect the overall effect of these factors on a loan group as an adjustment that, as appropriate, increases or decreases the historical loss rate applied to the loan group. Alternatively, the effect of these factors may be reflected through separate standalone adjustments within the FAS 5 [superseded by ASC Topic 326] component of the ALLL. Both methods are consistent with GAAP provided the adjustments for qualitative or environmental factors are reasonably and consistently determined, are adequately documented, and represent estimated credit losses. For each group of loans, an institution should apply its adjusted historical loss rate, or its historical loss rate and separate standalone adjustments, to the recorded investment in the group when determining its estimated credit losses. Note 1 — Basis of Presentation and Significant Accounting Policies – Continued Management must exercise significant judgment when evaluating the effect of qualitative factors on the amount of the ALLL because data may not be reasonably available or directly applicable for management to determine the precise impact of a factor on the collectability of the institution’s loan portfolio as of the evaluation date. Accordingly, institutions should support adjustments to historical loss rates and explain how the adjustments reflect current information, events, circumstances, and conditions in the loss measurements. Management should maintain reasonable documentation to support which factors affected the analysis and the impact of those factors on the loss measurement. Support and documentation include descriptions of each factor, management’s analysis of how each factor has changed over time, which loan groups’ loss rates have been adjusted, the amount by which loss estimates have been adjusted for changes in conditions, an explanation of how management estimated the impact, and other available data that supports the reasonableness of the adjustments. Examples of underlying supporting evidence could include, but are not limited to, relevant articles from newspapers and other publications that describe economic events affecting a particular geographic area, economic reports and data, and notes from discussions with borrowers. As defined by the Interagency Policy Statement, the Company considers qualitative or environmental factors that are likely to cause estimated credit losses associated with the Company’s existing portfolio to differ from historical loss experience, as defined in the Interagency Guidance, including but not limited to: • Changes in lending policies and procedures, including changes in underwriting standards and collection, charge-off, and recovery practices not considered elsewhere in estimating credit losses. • Changes in international, national, regional, and local economic and business conditions and developments that affect the collectability of the portfolio, including the condition of various market segments. • Changes in the nature and volume of the portfolio and in the terms of loans. • Changes in the experience, ability, and depth of lending management and other relevant staff. • Changes in the volume and severity of past due loans, the volume of nonaccrual loans, and the volume and severity of adversely classified or graded loans. • Changes in the quality of the institution’s loan review system. • Changes in the value of underlying collateral for collateral-dependent loans. • The existence and effect of any concentrations of credit, and changes in the levels of such concentrations. • The effect of other external factors, such as competition and legal and regulatory requirements, on the level of estimated credit losses in the institution’s existing portfolio. Charge-offs of loans are generally processed by policy as well as regulatory guidance. Secured consumer loans, including residential real estate loans, that are 120 days past due, are written down to the fair value of the collateral. Unsecured loans are charged-off once the loan is 120 days past due. Decisions on when to charge-off commercial loans and loans secured by commercial real estate are made on an individual basis rather than length of delinquency, though it is a factor in the decision. The financial resources of the borrower and/or guarantor and the nature and value of any collateral are other factors considered.
Premises and Equipment	Premises and equipment — Land is carried at cost. Premises and equipment are carried at cost, net of accumulated depreciation and amortization. Depreciation and amortization expense is computed using the straight-line method based on the estimated useful lives of the related assets below: Building and building improvements 15 to 40 years Leasehold improvements 3 to 15 years Furniture and equipment 3 to 15 years Computers, software and equipment 3 to 5 years Note 1 — Basis of Presentation and Significant Accounting Policies – Continued Maintenance and repairs are expensed as incurred while major additions and improvements are capitalized.
Bank-Owned Life Insurance ("BOLI")	Bank-owned life insurance (“BOLI”) — The Bank has purchased life insurance policies. These policies provide protection against the adverse financial effects that could result from the death of a key employee and provide tax-exempt income to offset expenses associated with the plans. It is the Bank’s intent to hold these policies as a long-term investment; however, there may be an income tax impact if the Bank chooses to surrender certain policies. Although the lives of individual current or former management-level employees are insured, the Bank is the owner and sole or partial beneficiary. BOLI is carried at the cash surrender value (“CSV”) of the underlying insurance contract. Changes in the CSV and any death benefits received in excess of the CSV are recognized as non-interest income.
Goodwill	Goodwill — Goodwill represents the excess of the purchase considerations paid over the fair value of the assets acquired, net of the fair values of liabilities assumed in a business combination and is not amortized but is reviewed annually, or more frequently as current circumstances and conditions warrant, for impairment. An assessment of qualitative factors is completed to determine if it is more likely than not that the fair value of a reporting unit is less than its carrying amount. If the qualitative analysis concludes that further analysis is required, then a quantitative impairment test would be completed. The quantitative goodwill impairment compares the reporting unit's estimated fair values, including goodwill, to its carrying amount. If the carrying amount exceeds its reporting unit’s fair value, then an impairment loss would be recognized as a charge to earnings but is limited by the amount of goodwill allocated to that reporting unit.
Other Intangible Assets	Other intangible assets — Other intangible assets consist primarily of core deposit intangibles (“CDI”), which are amounts recorded in business combinations or deposit purchase transactions related to the value of transaction-related deposits and the value of the client relationships associated with the deposits. Core deposit intangibles are amortized over the estimated useful life of such deposits. These assets are reviewed at least annually for events or circumstances that could affect their recoverability. These events could include loss of the underlying core deposits, increased competition or adverse changes in the economy. To the extent other identifiable intangible assets are deemed unrecoverable, impairment losses are recorded in other non-interest expense to reduce the carrying amount of the assets.
Mortgage and Other Servicing Rights	Mortgage and other servicing rights — Mortgage and other servicing rights are recognized as separate assets when rights are acquired through purchase of such rights or through the sale of loans. Generally, purchased servicing rights are capitalized at the cost to acquire the rights. For loans sold, the fair value of the servicing rights are estimated and capitalized. Fair value is based on market prices for comparable servicing rights contracts. Capitalized servicing rights are reported in other intangibles and are amortized into non-interest income in proportion to, and over the period of, the estimated future net servicing income of the underlying financial assets.
Other Real Estate Owned ("OREO")	Other real estate owned (”OREO”) — Assets acquired through, or in lieu of, foreclosure are held for sale and are initially recorded at the lower of the carrying amount of the foreclosed loan or the fair value of the foreclosed asset, less costs to sell, at the date of foreclosure. Subsequent to foreclosure, Management periodically performs valuations and the assets are carried at the lower of carrying amount or fair value, less selling costs. Revenues and expenses from operations and changes in the valuation allowance are included in other real estate owned expense.
Transfers of Financial Assets	Transfers of financial assets — Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.
Income Taxes	Income taxes — Deferred income tax assets and deferred income tax liabilities represent the tax effect of temporary differences between financial reporting and tax reporting measured at enacted tax rates in effect for the year in which the differences are expected to reverse. The Company recognizes only the impact of tax positions that, based on their technical merits, are more likely than not to be sustained upon an audit by the taxing authority. Developing the provision for income taxes, including the effective tax rate and analysis of potential tax exposure items, if any, requires significant judgment and expertise in federal and state income tax laws, regulations and strategies, including the determination of deferred income tax assets and liabilities and any estimated valuation allowances deemed necessary to value deferred income tax assets. Judgments and tax strategies are subject to audit by various taxing authorities. While the Company believes it has no significant uncertain income tax positions in the consolidated financial statements, adverse determinations by these taxing authorities could have a material adverse effect on the consolidated financial positions, result of operations, or cash flows.
Off-Balance-Sheet Credit Related Financial Instruments	Note 1 — Basis of Presentation and Significant Accounting Policies – Continued Off-balance sheet credit related financial instruments — In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit, and standby letters of credit. Such financial instruments are recorded when they are funded.
Allowance for Credit Losses on Off-Balance Sheet Credit Exposures	Allowance for credit losses on off-balance sheet credit exposures — The Company estimates expected credit losses on off-balance sheet credit exposures using the same CECL historical loss rates applied to loans held for investment over the contractual period in which the Company is exposed to credit risk through a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by the Company, adjusted for funding factors. The allowance for credit losses on off-balance sheet credit exposures is reported in other liabilities on the unaudited consolidated balance sheets with an offset to other non-interest expense. The estimate of CECL includes consideration of the likelihood that funding will occur and an estimate of expected credit losses on commitments expected to be funded over their estimated life. The Company recognizes provision for credit losses on the allowance for off-balance sheet credit exposures (e.g., unfunded loan commitments) together with provision for credit losses on the loan portfolio in the income statement line item provision for credit losses. The following table presents the provision for credit losses on the loan portfolio and off-balance sheet exposures: Three Months Ended Six Months Ended June 30, June 30, (Dollars in thousands) 2021 2020 2021 2020 Provision for credit loss loans $ (6,381 ) $ 2,100 $ (6,381 ) $ 2,750 Provision for credit losses unfunded 1,381 - 1,381 - Total provision for credit losses $ (5,000 ) $ 2,100 $ (5,000 ) $ 2,750
Share-based Compensation Plans	Share-based compensation plans — The fair value of incentive share-based awards is recorded as compensation expense over the vesting period of the award. Compensation expense for stock options is estimated at the date of grant using the Black-Scholes option-pricing model. Compensation expense for RSUs is based on the fair value of the Company’s common shares at the date of grant. RSU awards generally vest in thirds over three years from date of grant.
Earnings Per Share	Earnings per share — Basic earnings per common share represents income available to common shareholders divided by the weighted-average number of common shares outstanding during the period. Diluted earnings per share reflect additional common shares that would have been outstanding if dilutive potential common shares had been issued. Potential common shares include shares that may be issued by the Company for outstanding stock options determined using the treasury stock method and for all outstanding RSUs. Earnings per common share has been computed based on the following: Three Months Ended Six Months Ended June 30, June 30, (Dollars in thousands, except share and per share data) 2021 2020 2021 2020 Numerator Net income $ 12,700 $ 10,338 $ 22,138 $ 21,111 Denominator Weighted-average number of common shares outstanding 18,876,688 18,789,561 18,870,626 18,837,209 Incremental shares assumed for stock options and RSUs 159,887 142,950 157,549 148,110 Weighted-average number of dilutive shares outstanding 19,036,575 18,932,511 19,028,175 18,985,319 Basic earnings per common share $ 0.67 $ 0.55 $ 1.17 $ 1.12 Diluted earnings per common share $ 0.67 $ 0.55 $ 1.16 $ 1.11
Comprehensive Income	Comprehensive income —GAAP generally requires that recognized revenues, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities, such as unrealized gains and losses on available for sale securities, net of the related income tax effect, are reported as a separate component of the equity section of the consolidated balance sheets, such items, along with net income, are components of comprehensive income.
Impact of Recent Authoritative Accounting Guidance	Impact of recent authoritative accounting guidance — The Accounting Standards Codification™ (“ASC”) is the FASB officially recognized source of authoritative GAAP applicable to all public and non-public non-governmental entities. Periodically, the FASB will issue Accounting Standard Updates (“ASU”) to its ASC. Rules and interpretive releases of the SEC under the authority of the federal securities laws are also sources of authoritative GAAP to use as an SEC registrant. All other accounting literature is non-authoritative. On January 1, 2020, the Company adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet credit exposures. Results for reporting periods beginning after January 1, 2020, are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. The Company adopted ASC 326 using the prospective transition approach for financial assets purchased through an acquisition or business combination. Loans that were previously classified as PCI and accounted for under ASC 310-30 were reclassified as PCD loans. In accordance with the new standard, Management did not reassess whether PCI loans met the criteria of PCD loan as of the date of adoption. On January 1, 2020, the amortized cost basis for PCD loans was increased by $1.5 million to reflect the addition of credit discounts to ACL. The remaining noncredit discount will be accreted into interest income over the remaining life of the portfolio. For Non-PCD loans, the Company increased its ACL by $2.6 million using the same methodology used for loans held for investment. The remaining credit and noncredit discount will be accreted into interest income over the remaining life of the portfolio. Additionally, the Company further increased its ACL by $5.4 million to reflect the change in accounting methodology for CECL. The following table illustrates the impact of the adoption of CECL (ASC 326): January 1, 2020 (Dollars in thousands) Reported Under ASC 326 Reported Pre Adoption Impact of ASC 326 Adoption Assets: Allowance for credit losses: Commercial real estate loans: Real estate term $ 12,683 $ 12,275 $ 408 Construction and land development 13,393 6,990 6,403 Total commercial real estate 26,076 19,265 6,811 Commercial and industrial loans 11,541 10,892 649 Consumer loans: Residential and home equity 2,635 1,118 1,517 Consumer and other 640 151 489 Total consumer 3,275 1,269 2,006 Total allowance for credit losses on loans $ 40,892 $ 31,426 $ 9,466 Liabilities and shareholders' equity: Reserve for off-balance sheet obligations 1,669 880 789 Shareholders' equity 325,682 332,362 (6,680 )
Subsequent Events	Subsequent events — The Company has evaluated events occurring subsequent to June 30, 2021 for disclosure in the consolidated financial statements.

Basis of Presentation and Sig_3

Basis of Presentation and Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Schedule of Estimated Useful Lives of Related Assets	Depreciation and amortization expense is computed using the straight-line method based on the estimated useful lives of the related assets below: Building and building improvements 15 to 40 years Leasehold improvements 3 to 15 years Furniture and equipment 3 to 15 years Computers, software and equipment 3 to 5 years
Summary of Changes in Allowance for Credit Losses	The following table presents the provision for credit losses on the loan portfolio and off-balance sheet exposures: Three Months Ended Six Months Ended June 30, June 30, (Dollars in thousands) 2021 2020 2021 2020 Provision for credit loss loans $ (6,381 ) $ 2,100 $ (6,381 ) $ 2,750 Provision for credit losses unfunded 1,381 - 1,381 - Total provision for credit losses $ (5,000 ) $ 2,100 $ (5,000 ) $ 2,750 Changes in the allowance for credit losses are as follows: Three Months Ended June 30, 2021 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period $ 19,820 $ 12,848 $ 5,756 $ 2,262 $ 327 $ 41,013 Provision for credit losses (4,653 ) (1,518 ) (756 ) 587 (41 ) (6,381 ) Gross loan charge-offs - - - - (20 ) (20 ) Recoveries - 1 284 20 41 346 Net loan (charge-offs) / recoveries - 1 284 20 21 326 Balance at end of period $ 15,167 $ 11,331 $ 5,284 $ 2,869 $ 307 $ 34,958 Three Months Ended June 30, 2020 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period, prior to adoption of ASC 326 $ 12,997 $ 13,677 $ 11,468 $ 2,553 $ 558 $ 41,253 Provision for credit losses (460 ) 1,452 905 211 (8 ) 2,100 Gross loan charge-offs (99 ) (43 ) (654 ) - (61 ) (857 ) Recoveries 69 35 41 3 39 187 Net loan (charge-offs) / recoveries (30 ) (8 ) (613 ) 3 (22 ) (670 ) Balance at end of period $ 12,507 $ 15,121 $ 11,760 $ 2,767 $ 528 $ 42,683 Six Months Ended June 30, 2021 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period $ 20,627 $ 10,532 $ 8,095 $ 1,662 $ 320 $ 41,236 Provision for credit losses (5,460 ) 796 (2,863 ) 1,185 (39 ) (6,381 ) Gross loan charge-offs - - (922 ) - (68 ) (990 ) Recoveries - 3 974 22 94 1,093 Net loan (charge-offs) / recoveries - 3 52 22 26 103 Balance at end of period $ 15,167 $ 11,331 $ 5,284 $ 2,869 $ 307 $ 34,958 Six Months Ended June 30, 2020 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period $ 12,275 $ 6,990 $ 10,892 $ 1,118 $ 151 $ 31,426 Impact of adopting ASC 326 408 6,403 649 1,517 489 9,466 Provision for credit losses (132 ) 1,752 1,092 107 (69 ) 2,750 Gross loan charge-offs (113 ) (73 ) (1,040 ) - (183 ) (1,409 ) Recoveries 69 49 167 25 140 450 Net loan (charge-offs) / recoveries (44 ) (24 ) (873 ) 25 (43 ) (959 ) Balance at end of period $ 12,507 $ 15,121 $ 11,760 $ 2,767 $ 528 $ 42,683
Schedule of Earnings Per Common Share	Earnings per common share has been computed based on the following: Three Months Ended Six Months Ended June 30, June 30, (Dollars in thousands, except share and per share data) 2021 2020 2021 2020 Numerator Net income $ 12,700 $ 10,338 $ 22,138 $ 21,111 Denominator Weighted-average number of common shares outstanding 18,876,688 18,789,561 18,870,626 18,837,209 Incremental shares assumed for stock options and RSUs 159,887 142,950 157,549 148,110 Weighted-average number of dilutive shares outstanding 19,036,575 18,932,511 19,028,175 18,985,319 Basic earnings per common share $ 0.67 $ 0.55 $ 1.17 $ 1.12 Diluted earnings per common share $ 0.67 $ 0.55 $ 1.16 $ 1.11
Schedule of Impact of Adoption of CECL (ASC 326)	The following table illustrates the impact of the adoption of CECL (ASC 326): January 1, 2020 (Dollars in thousands) Reported Under ASC 326 Reported Pre Adoption Impact of ASC 326 Adoption Assets: Allowance for credit losses: Commercial real estate loans: Real estate term $ 12,683 $ 12,275 $ 408 Construction and land development 13,393 6,990 6,403 Total commercial real estate 26,076 19,265 6,811 Commercial and industrial loans 11,541 10,892 649 Consumer loans: Residential and home equity 2,635 1,118 1,517 Consumer and other 640 151 489 Total consumer 3,275 1,269 2,006 Total allowance for credit losses on loans $ 40,892 $ 31,426 $ 9,466 Liabilities and shareholders' equity: Reserve for off-balance sheet obligations 1,669 880 789 Shareholders' equity 325,682 332,362 (6,680 )

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2021
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale	Amortized cost and estimated fair value of investment securities available for sale are summarized as follows: Gross Unrealized Losses Less 12 Gross Than Months Amortized Unrealized 12 or Fair (Dollars in thousands) Cost Gains Months Longer Value As of June 30, 2021 U.S. Government-sponsored securities $ 12,373 $ 252 $ (3 ) $ (3 ) $ 12,619 Municipal securities 30,140 989 - - 31,129 Mortgage-backed securities 1,448,728 7,677 (13,339 ) (4 ) 1,443,062 Corporate securities 5,000 9 - (112 ) 4,897 $ 1,496,241 $ 8,927 $ (13,342 ) $ (119 ) $ 1,491,707 As of December 31, 2020 U.S. Government-sponsored securities $ 12,844 $ 369 $ - $ (8 ) $ 13,205 Municipal securities 36,010 1,277 - - 37,287 Mortgage-backed securities 1,247,581 17,587 (134 ) (8 ) 1,265,026 Corporate securities 5,000 5 - (130 ) 4,875 $ 1,301,435 $ 19,238 $ (134 ) $ (146 ) $ 1,320,393
Summary of Gross Unrealized Losses and Fair Value for Securities Available for Sale	At June 30, 2021 and December 31, 2020, the gross unrealized losses and the fair value for securities available for sale were as follows: As of June 30, 2021 Less Than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Losses Value Losses Value Losses Available for Sale U.S. Government-sponsored securities $ 225 $ (3 ) $ 568 $ (3 ) $ 793 $ (6 ) Municipal securities - - - - - - Mortgage-backed securities 858,172 (13,339 ) 590 (4 ) 858,762 (13,343 ) Corporate securities - - 2,887 (112 ) 2,887 (112 ) $ 858,397 $ (13,342 ) $ 4,045 $ (119 ) $ 862,442 $ (13,461 ) As of December 31, 2020 Less Than 12 Months 12 Months or More Total Fair Unrealized Fair Unrealized Fair Unrealized (Dollars in thousands) Value Losses Value Losses Value Losses Available for Sale U.S. Government-sponsored securities $ - $ - $ 777 $ (8 ) $ 777 $ (8 ) Municipal securities - - - - - - Mortgage-backed securities 76,978 (134 ) 1,785 (8 ) 78,763 (142 ) Corporate securities - - 2,870 (130 ) 2,870 (130 ) $ 76,978 $ (134 ) $ 5,432 $ (146 ) $ 82,410 $ (280 )
Summary of Amortized Cost of Debt Securities Available for Sale Aggregated by Credit Quality Indicator	The following table summarizes the amortized cost of AFS debt securities at June 30, 2021, aggregated by credit quality indicator. Gross Unrealized Losses Less 12 Gross Than Months Amortized Unrealized 12 or Fair (Dollars in thousands) Cost Gains Months Longer Value As of June 30, 2021 U.S. Government-backed securities (1) $ 1,461,101 $ 7,929 $ (13,342 ) $ (7 ) $ 1,455,681 Investment grade rating 28,651 785 - (112 ) 29,324 Below investment grade - - - - - Unrated investment securities 6,489 213 - - 6,702 $ 1,496,241 $ 8,927 $ (13,342 ) $ (119 ) $ 1,491,707 As of December 31, 2020 U.S. Government-sponsored securities (1) $ 1,260,425 $ 17,956 $ (134 ) $ (16 ) $ 1,278,231 Investment grade rating 33,063 1,008 - (130 ) 33,941 Below investment grade - - - - - Unrated investment securities 7,947 274 - - 8,221 $ 1,301,435 $ 19,238 $ (134 ) $ (146 ) $ 1,320,393 (1) Securities backed by the full faith and credit of the U.S. Government.
Amortized Cost and Estimated Fair Value of Investment Securities that are Available for Sale by Contractual Maturity	The amortized cost and estimated fair value of investment securities that are available for sale at June 30, 2021, by contractual maturity, are as follows: Available For Sale Amortized Fair (Dollars in thousands) Cost Value Securities maturing in: One year or less $ 11,785 $ 11,882 After one year through five years 23,612 24,225 After five years through ten years 25,449 26,402 After ten years 1,435,395 1,429,198 $ 1,496,241 $ 1,491,707

Loans and Allowance for Credi_2

Loans and Allowance for Credit Losses (Tables)	6 Months Ended
	Jun. 30, 2021
Receivables [Abstract]
Summary of Loans	Loans are summarized as follows: June 30, December 31, (Dollars in thousands) 2021 2020 Loans held for investment: Commercial real estate loans: Real estate term $ 1,092,120 $ 1,021,880 Construction and land development 288,699 228,213 Total commercial real estate loans 1,380,819 1,250,093 Commercial and industrial loans 225,050 257,240 Consumer loans: Residential and home equity 265,680 185,470 Consumer and other 9,378 8,948 Total consumer loans 275,058 194,418 Total gross loans 1,880,927 1,701,751 Net deferred loan fees (7,242 ) (6,255 ) Total loans held for investment 1,873,685 1,695,496 Allowance for credit losses (34,958 ) (41,236 ) Total loans held for investment, net $ 1,838,727 $ 1,654,260
Summary of Changes in Allowance for Credit Losses	The following table presents the provision for credit losses on the loan portfolio and off-balance sheet exposures: Three Months Ended Six Months Ended June 30, June 30, (Dollars in thousands) 2021 2020 2021 2020 Provision for credit loss loans $ (6,381 ) $ 2,100 $ (6,381 ) $ 2,750 Provision for credit losses unfunded 1,381 - 1,381 - Total provision for credit losses $ (5,000 ) $ 2,100 $ (5,000 ) $ 2,750 Changes in the allowance for credit losses are as follows: Three Months Ended June 30, 2021 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period $ 19,820 $ 12,848 $ 5,756 $ 2,262 $ 327 $ 41,013 Provision for credit losses (4,653 ) (1,518 ) (756 ) 587 (41 ) (6,381 ) Gross loan charge-offs - - - - (20 ) (20 ) Recoveries - 1 284 20 41 346 Net loan (charge-offs) / recoveries - 1 284 20 21 326 Balance at end of period $ 15,167 $ 11,331 $ 5,284 $ 2,869 $ 307 $ 34,958 Three Months Ended June 30, 2020 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period, prior to adoption of ASC 326 $ 12,997 $ 13,677 $ 11,468 $ 2,553 $ 558 $ 41,253 Provision for credit losses (460 ) 1,452 905 211 (8 ) 2,100 Gross loan charge-offs (99 ) (43 ) (654 ) - (61 ) (857 ) Recoveries 69 35 41 3 39 187 Net loan (charge-offs) / recoveries (30 ) (8 ) (613 ) 3 (22 ) (670 ) Balance at end of period $ 12,507 $ 15,121 $ 11,760 $ 2,767 $ 528 $ 42,683 Six Months Ended June 30, 2021 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period $ 20,627 $ 10,532 $ 8,095 $ 1,662 $ 320 $ 41,236 Provision for credit losses (5,460 ) 796 (2,863 ) 1,185 (39 ) (6,381 ) Gross loan charge-offs - - (922 ) - (68 ) (990 ) Recoveries - 3 974 22 94 1,093 Net loan (charge-offs) / recoveries - 3 52 22 26 103 Balance at end of period $ 15,167 $ 11,331 $ 5,284 $ 2,869 $ 307 $ 34,958 Six Months Ended June 30, 2020 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total Balance at beginning of period $ 12,275 $ 6,990 $ 10,892 $ 1,118 $ 151 $ 31,426 Impact of adopting ASC 326 408 6,403 649 1,517 489 9,466 Provision for credit losses (132 ) 1,752 1,092 107 (69 ) 2,750 Gross loan charge-offs (113 ) (73 ) (1,040 ) - (183 ) (1,409 ) Recoveries 69 49 167 25 140 450 Net loan (charge-offs) / recoveries (44 ) (24 ) (873 ) 25 (43 ) (959 ) Balance at end of period $ 12,507 $ 15,121 $ 11,760 $ 2,767 $ 528 $ 42,683
Summary of Nonaccrual Loans	Note 3 — Loans and Allowance for Credit Losses – Continued Non-accrual loans are summarized as follows: June 30, December 31, (Dollars in thousands) 2021 2020 Non-accrual loans, not troubled debt restructured: Real estate term $ 1,482 $ 150 Construction and land development - - Commercial and industrial loans 1,146 922 Residential and home equity 34 254 Consumer and other - - Total non-accrual loans, not troubled debt restructured 2,662 1,326 Troubled debt restructured loans, non-accrual: Real estate term 4,346 6,421 Construction and land development - - Commercial and industrial loans 224 1,272 Residential and home equity - - Consumer and other - - Total troubled debt restructured loans, non-accrual 4,570 7,693 Total non-accrual loans $ 7,232 $ 9,019
Summary of Troubled Debt Restructure Loans	Troubled debt restructure loans are summarized as follows: June 30, December 31, (Dollars in thousands) 2021 2020 Accruing troubled debt restructured loans $ 209 $ 2,774 Non-accrual troubled debt restructured loans 4,570 7,693 Total troubled debt restructured loans $ 4,779 $ 10,467 The below table summarize TDRs outstanding as of June 30, 2021, by year of occurrence: June 30, 2021 # of $ of # of Non- $ of Non- # of $ of Accruing Accruing accrual accrual Total Total (Dollars in thousands) TDR TDR TDR TDR TDR TDR 2021 - $ - - $ - - $ - 2020 1 10 - - 1 10 2019 1 199 5 4,570 6 4,769 2018 - - - - - - Thereafter - - - - - - Total 2 $ 209 5 $ 4,570 7 $ 4,779
Summary of Changes in Troubled Debt Restructure Loans	Note 3 — Loans and Allowance for Credit Losses – Continued The following tables present TDRs that occurred during the periods presented by type of modification and the TDRs for which the payment default occurred within twelve months of the restructure date. A default on a TDR results in a transfer to nonaccrual status, a charge-off, or a combination of both. There were no new TDRs occurring during the six months ended June 30, 2021. Six Months Ended June 30, 2020 # of $ of # of Non- $ of Non- # of $ of Accruing Accruing accrual accrual Total Total (Dollars in thousands) TDR TDR TDR TDR TDR TDR Interest rate reduction - $ - - $ - - $ - Loan payment deferment - - 1 113 1 113 Loan re-amortization - - - - - - Loan extension - - - - - - Total - $ - 1 $ 113 1 $ 113 Six Months Ended June 30, 2020 Real Construction Commercial Residential Consumer Estate and Land and and Home and (Dollars in thousands) Term Development Industrial Equity Other Total TDRs that occurred during the period (1) Number of loans 1 - - - - 1 Pre-modification balance $ 113 $ - $ - $ - $ - $ 113 Post-modification balance $ 113 $ - $ - $ - $ - $ 113 TDRs that subsequently defaulted Number of loans 1 - - - - 1 Recorded balance $ 113 $ - $ - $ - $ - $ 113 (1) Since most loans were already considered classified and/or on non-accrual status prior to restructuring, the modifications did not have a material effect on the Company’s determination of the allowance for credit losses.
Summary of Current and Past Due Loans Held For Investment (Accruing And Non-Accruing)	Current and past due loans held for investment (accruing and non-accruing) are summarized as follows: June 30, 2021 30-89 Days 90+ Days Non- Total Total (Dollars in thousands) Current Past Due Past Due accrual Past Due Loans Commercial real estate: Real estate term $ 1,083,090 $ 3,202 $ - $ 5,828 $ 9,030 $ 1,092,120 Construction and land development 288,666 33 - - 33 288,699 Total commercial real estate 1,371,756 3,235 - 5,828 9,063 1,380,819 Commercial and industrial loans 221,904 1,776 - 1,370 3,146 225,050 Consumer: Residential and home equity 265,601 45 - 34 79 265,680 Consumer and other 9,141 237 - - 237 9,378 Total consumer 274,742 282 - 34 316 275,058 Total gross loans $ 1,868,402 $ 5,293 $ - $ 7,232 $ 12,525 $ 1,880,927 December 31, 2020 30-89 Days 90+ Days Non- Total Total (Dollars in thousands) Current Past Due Past Due accrual Past Due Loans Commercial real estate: Real estate term $ 1,013,914 $ 1,395 $ - $ 6,571 $ 7,966 $ 1,021,880 Construction and land development 227,054 1,159 - - 1,159 228,213 Total commercial real estate 1,240,968 2,554 - 6,571 9,125 1,250,093 Commercial and industrial loans 253,833 1,170 43 2,194 3,407 257,240 Consumer: Residential and home equity 184,566 650 - 254 904 185,470 Consumer and other 8,703 243 2 - 245 8,948 Total consumer 193,269 893 2 254 1,149 194,418 Total gross loans $ 1,688,070 $ 4,617 $ 45 $ 9,019 $ 13,681 $ 1,701,751
Summary of Outstanding Loan Balances Categorized by Credit Quality Indicators	Note 3 — Loans and Allowance for Credit Losses – Continued Outstanding loan balances (accruing and non-accruing) categorized by these credit quality indicators are summarized as follows: June 30, 2021 Special Total Total (Dollars in thousands) Pass Mention Substandard Doubtful Loans ACL Commercial real estate: Real estate term $ 1,049,629 $ 18,932 $ 23,559 $ - $ 1,092,120 $ 15,167 Construction and land development 288,319 380 - - 288,699 11,331 Total commercial real estate 1,337,948 19,312 23,559 - 1,380,819 26,498 Commercial and industrial loans 213,591 6,104 5,305 50 225,050 5,284 Consumer loans: Residential and home equity 264,643 - 1,037 - 265,680 2,869 Consumer and other 9,378 - - - 9,378 307 Total consumer 274,021 - 1,037 - 275,058 3,176 Total $ 1,825,560 $ 25,416 $ 29,901 $ 50 $ 1,880,927 $ 34,958 December 31, 2020 Special Total Total (Dollars in thousands) Pass Mention Substandard Doubtful Loans ACL Commercial real estate: Real estate term $ 978,945 $ 17,248 $ 25,687 $ - $ 1,021,880 $ 20,627 Construction and land development 224,066 3,785 362 - 228,213 10,532 Total commercial real estate 1,203,011 21,033 26,049 - 1,250,093 31,159 Commercial and industrial loans 247,983 4,348 4,020 889 257,240 8,095 Consumer loans: Residential and home equity 183,306 - 2,164 - 185,470 1,662 Consumer and other 8,948 - - - 8,948 320 Total consumer 192,254 - 2,164 - 194,418 1,982 Total $ 1,643,248 $ 25,381 $ 32,233 $ 889 $ 1,701,751 $ 41,236 The following table represents outstanding loan balances by credit quality indicators and vintage year by class of financing receivable as of June 30, 2021: June 30, 2021 Term Loans Amortized Cost Basis by Origination Year Revolving Loans (Dollars in thousands) 2021 2020 2019 2018 2017 Prior Amortized Cost Total Loans held for investment: Commercial real estate: Real estate term Risk rating Pass $ 122,311 $ 256,571 $ 116,584 $ 75,650 $ 85,369 $ 209,569 $ 183,575 $ 1,049,629 Special mention - - - 653 3,086 13,851 1,342 18,932 Substandard - 1,223 2,755 2,408 1,407 4,462 11,304 23,559 Doubtful - - - - - - - - Total real estate term loans $ 122,311 $ 257,794 $ 119,339 $ 78,711 $ 89,862 $ 227,882 $ 196,221 $ 1,092,120 Construction and land development Risk rating Pass $ 7,390 $ 7,957 $ 2,817 $ 7,701 $ 949 $ 8,434 $ 253,071 $ 288,319 Special mention - - - - - - 380 380 Substandard - - - - - - - - Doubtful - - - - - - - - Total construction and land development loans $ 7,390 $ 7,957 $ 2,817 $ 7,701 $ 949 $ 8,434 $ 253,451 $ 288,699 Total commercial real estate loans $ 129,701 $ 265,751 $ 122,156 $ 86,412 $ 90,811 $ 236,316 $ 449,672 $ 1,380,819 Commercial and industrial loans Risk rating Pass $ 38,518 $ 38,488 $ 22,136 $ 21,649 $ 12,182 $ 42,699 $ 37,919 $ 213,591 Special mention - 28 - 2,304 755 108 2,909 6,104 Substandard - 102 602 1,178 431 1,471 1,521 5,305 Doubtful - - - 50 - - - 50 Total commercial and industrial loans $ 38,518 $ 38,618 $ 22,738 $ 25,181 $ 13,368 $ 44,278 $ 42,349 $ 225,050 Consumer: Residential real estate Risk rating Pass $ 105,999 $ 74,682 $ 20,901 $ 14,991 $ 14,251 $ 29,416 $ 4,403 $ 264,643 Special mention - - - - - - - - Substandard - 590 - 45 237 165 - 1,037 Doubtful - - - - - - - - Total residential real estate loans $ 105,999 $ 75,272 $ 20,901 $ 15,036 $ 14,488 $ 29,581 $ 4,403 $ 265,680 Consumer and other Risk rating Pass $ 4,043 $ 1,794 $ 1,400 $ 861 $ 424 $ 856 $ - $ 9,378 Special mention - - - - - - - - Substandard - - - - - - - - Doubtful - - - - - - - - Total consumer and other loans $ 4,043 $ 1,794 $ 1,400 $ 861 $ 424 $ 856 $ - $ 9,378 Total consumer loans $ 110,042 $ 77,066 $ 22,301 $ 15,897 $ 14,912 $ 30,437 $ 4,403 $ 275,058 Total gross loans $ 278,261 $ 381,435 $ 167,195 $ 127,490 $ 119,091 $ 311,031 $ 496,424 $ 1,880,927
Summary of Amortized Cost Basis of Collateral Dependent Loans	Note 3 — Loans and Allowance for Credit Losses – Continued The following tables provide amortized cost basis less government guarantees of $3.8 million and $8.8 million for collateral dependent loans as of June 30, 2021 and December 31, 2020, respectively: June 30, 2021 Real Accounts (Dollars in thousands) Estate Receivable Equipment Livestock Auto Total Commercial real estate: Real estate term $ 1,871 $ - $ - $ - $ - $ 1,871 Construction and land development - - - - - - Total commercial real estate 1,871 - - - - 1,871 Commercial and industrial loans - 432 - - 50 482 Consumer: Residential and home equity 560 - - - - 560 Consumer and other - - - - - - Total consumer 560 - - - - 560 Total collateral dependent loans $ 2,431 $ 432 $ - $ - $ 50 $ 2,913 December 31, 2020 Real Accounts (Dollars in thousands) Estate Receivable Equipment Livestock Auto Total Commercial real estate: Real estate term $ 4,118 $ - $ - $ - $ - $ 4,118 Construction and land development 362 - - - - 362 Total commercial real estate 4,480 - - - - 4,480 Commercial and industrial loans - 1,165 - - 43 1,208 Consumer: Residential and home equity 216 - - - - 216 Consumer and other - - - - - - Total consumer 216 - - - - 216 Total collateral dependent loans $ 4,696 $ 1,165 $ - $ - $ 43 $ 5,904
Summary of Changes In Accretable Yield for Non-PCD Loans	The following table presents the changes in the accretable yield for non-PCD loans for the six months ended June 30, 2021 and 2020: Six Months Ended June 30, (Dollars in thousands) 2021 2020 Balance, beginning of period $ 2,803 $ 4,247 Accretion to interest income (532 ) (1,192 ) Reclassification from non-accretable difference - 402 Balance, end of period $ 2,271 $ 3,457

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Summary of Contractual Amounts of Off-balance Sheet Financial Instruments	Contractual amounts of off-balance sheet financial instruments were as follows: June 30, December 31, (Dollars in thousands) 2021 2020 Commitments to extend credit, including unsecured commitments of $12,276 and $12,039 as of June 30, 2021 and December 31, 2020, respectively $ 813,317 $ 656,914 Stand-by letters of credit and bond commitments, including unsecured commitments of $1,079 and $727 as of June 30, 2021 and December 31, 2020, respectively 36,242 26,036 Unused credit card lines, all unsecured 29,237 29,111

Fair Value (Tables)

Fair Value (Tables)	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Summary of Estimated Fair Values of Financial Instruments	The following table presents estimated fair values of the Company’s financial instruments as of June 30, 2021 and December 31, 2020: June 30, 2021 December 31, 2020 Carrying Estimated Carrying Estimated (Dollars in thousands) Level Value Fair Value Value Fair Value Financial Assets: Cash and cash equivalents 1 $ 63,329 $ 63,329 $ 239,874 $ 239,874 Investment securities available for sale 2 1,485,005 1,485,005 1,312,172 1,312,172 Investment securities available for sale 3 6,702 6,702 8,221 8,221 Non-marketable securities 2 4,042 4,042 2,890 2,890 Loans held for sale 2 6,672 6,672 14,152 14,152 Loans held for investment 3 1,838,727 1,792,740 1,654,260 1,618,743 Financial Liabilities: Total deposits 2 $ 3,156,707 $ 2,862,951 $ 2,916,308 $ 2,751,715
Summary of Asset Measured on Recurring and Non-recurring Basic at Fair Value	Assets measured on a recurring and non-recurring basis are as follows: (Dollars in thousands) Level 1 Level 2 Level 3 Total As of June 30, 2021 Fair valued on a recurring basis: Investment securities available for sale $ - $ 1,485,005 $ 6,702 $ 1,491,707 Fair valued on a non-recurring basis: Individually evaluated loans - - 425 425 As of December 31, 2020 Fair valued on a recurring basis: Investment securities available for sale $ - $ 1,312,172 $ 8,221 $ 1,320,393 Fair valued on a non-recurring basis: Individually evaluated loans - - 1,804 1,804

Regulatory Capital Matters (Tab

Regulatory Capital Matters (Tables)	6 Months Ended
	Jun. 30, 2021
Regulatory Capital Requirements [Abstract]
Summary of Actual and Required Capital Amounts and Ratios	The Company’s actual and required capital amounts and ratios are as follows: June 30, 2021 Minimum Capital Well Capitalized Actual Requirement Requirement (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Consolidated CET1 Capital to Risk-Weighted Assets $ 346,137 16.91 % $ 92,093 4.50 % $ 133,024 6.50 % Tier 1 Capital to Risk-Weighted Assets 346,137 16.91 % 122,791 6.00 % 163,721 8.00 % Total Risk-Based Capital to Risk-Weighted Assets 371,877 18.17 % 163,721 8.00 % 204,652 10.00 % Tier 1 Leverage 346,137 9.84 % 140,640 4.00 % NA NA Altabank TM CET1 Capital to Risk-Weighted Assets $ 339,013 16.57 % $ 92,045 4.50 % $ 132,954 6.50 % Tier 1 Capital to Risk-Weighted Assets 339,013 16.57 % 122,727 6.00 % 163,636 8.00 % Total Risk-Based Capital to Risk-Weighted Assets 364,740 17.83 % 163,636 8.00 % 204,545 10.00 % Tier 1 Leverage 339,013 9.64 % 140,664 4.00 % 175,830 5.00 % December 31, 2020 Minimum Capital Well Capitalized Actual Requirement Requirement (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio Consolidated CET1 Capital to Risk-Weighted Assets $ 329,049 17.91 % $ 82,679 4.50 % $ 119,426 6.50 % Tier 1 Capital to Risk-Weighted Assets 329,049 17.91 % 110,239 6.00 % 146,985 8.00 % Total Risk-Based Capital to Risk-Weighted Assets 352,266 19.17 % 146,985 8.00 % 183,732 10.00 % Tier 1 Leverage 329,049 10.47 % 125,681 4.00 % NA NA Altabank TM CET1 Capital to Risk-Weighted Assets $ 322,783 17.59 % $ 82,578 4.50 % $ 119,280 6.50 % Tier 1 Capital to Risk-Weighted Assets 322,783 17.59 % 110,104 6.00 % 146,806 8.00 % Total Risk-Based Capital to Risk-Weighted Assets 345,973 18.85 % 146,806 8.00 % 183,507 10.00 % Tier 1 Leverage 322,793 10.18 % 126,795 4.00 % 158,493 5.00 %

Basis of Presentation and Sig_4

Basis of Presentation and Significant Accounting Policies - Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2021USD ($)Branch
ASU 2016-13
Basis Of Presentation And Significant Accounting Policies [Line Items]
Change in accounting principle, accounting standards update, adopted	true
Change in accounting principle, accounting standards update, adoption date	Jan. 1, 2020
Increase in amortized cost basis for PCD loans	$ 1.5
Increase in allowance for credit losses for Non-PCD loans	2.6
Increase in allowance for credit losses to reflect change in accounting methodology	$ 5.4
RSU
Basis Of Presentation And Significant Accounting Policies [Line Items]
Vesting period	3 years
Vesting period, description	RSU awards generally vest in thirds over three years from date of grant.
Minimum
Basis Of Presentation And Significant Accounting Policies [Line Items]
Threshold period past due for loans placed on non-accrual status	90 days
Minimum | RSU
Basis Of Presentation And Significant Accounting Policies [Line Items]
Vesting period	1 year
Maximum | RSU
Basis Of Presentation And Significant Accounting Policies [Line Items]
Vesting period	3 years
People's Intermountain Bank
Basis Of Presentation And Significant Accounting Policies [Line Items]
Number of retail branches | Branch	25

Basis of Presentation and Sig_5

Basis of Presentation and Significant Accounting Policies - Schedule of Estimated Useful Lives of Related Assets (Details)	6 Months Ended
	Jun. 30, 2021
Building and Building Improvements | Minimum
Property Plant And Equipment [Line Items]
Estimated useful lives	15 years
Building and Building Improvements | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	40 years
Leasehold Improvements | Minimum
Property Plant And Equipment [Line Items]
Estimated useful lives	3 years
Leasehold Improvements | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	15 years
Furniture and Equipment | Minimum
Property Plant And Equipment [Line Items]
Estimated useful lives	3 years
Furniture and Equipment | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	15 years
Computers Software and Equipment | Minimum
Property Plant And Equipment [Line Items]
Estimated useful lives	3 years
Computers Software and Equipment | Maximum [Member]
Property Plant And Equipment [Line Items]
Estimated useful lives	5 years

Basis of Presentation and Sig_6

Basis of Presentation and Significant Accounting Policies - Summary of Provision for Credit Losses on Loan Portfolio and Off-balance Sheet Exposures (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accounting Policies [Abstract]
Provision for credit loss loans	$ (6,381)	$ 2,100	$ (6,381)	$ 2,750
Provision for credit losses unfunded	1,381		1,381
Total provision for credit losses	$ (5,000)	$ 2,100	$ (5,000)	$ 2,750

Basis of Presentation and Sig_7

Basis of Presentation and Significant Accounting Policies - Schedule of Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator
Net income	$ 12,700	$ 9,438	$ 10,338	$ 10,773	$ 22,138	$ 21,111
Denominator
Weighted-average number of common shares outstanding	18,876,688		18,789,561		18,870,626	18,837,209
Incremental shares assumed for stock options and RSUs	159,887		142,950		157,549	148,110
Weighted-average number of dilutive shares outstanding	19,036,575		18,932,511		19,028,175	18,985,319
Basic earnings per common share	$ 0.67		$ 0.55		$ 1.17	$ 1.12
Diluted earnings per common share	$ 0.67		$ 0.55		$ 1.16	$ 1.11

Basis of Presentation and Sig_8

Basis of Presentation and Significant Accounting Policies - Schedule of Impact of Adoption of CECL (ASC 326) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
ASSETS
Allowance for credit losses	$ 34,958		$ 41,236
LIABILITIES AND SHAREHOLDERS’ EQUITY
Shareholders' equity	370,631	$ 349,871	371,138	$ 350,130	$ 340,137		$ 332,362
ASU 2016-13
ASSETS
Allowance for credit losses						$ 40,892
LIABILITIES AND SHAREHOLDERS’ EQUITY
Reserve for off-balance sheet obligations						1,669
Shareholders' equity						325,682
ASU 2016-13 | Reported Pre Adoption
ASSETS
Allowance for credit losses						31,426
LIABILITIES AND SHAREHOLDERS’ EQUITY
Reserve for off-balance sheet obligations						880
Shareholders' equity						332,362
ASU 2016-13 | Impact of ASC 326 Adoption
ASSETS
Allowance for credit losses						9,466
LIABILITIES AND SHAREHOLDERS’ EQUITY
Reserve for off-balance sheet obligations						789
Shareholders' equity						(6,680)
Commercial Real Estate
ASSETS
Allowance for credit losses	26,498		31,159
Commercial Real Estate | Real Estate Term
ASSETS
Allowance for credit losses	15,167		20,627
Commercial Real Estate | Construction and Land Development
ASSETS
Allowance for credit losses	11,331		10,532
Commercial Real Estate | ASU 2016-13
ASSETS
Allowance for credit losses						26,076
Commercial Real Estate | ASU 2016-13 | Real Estate Term
ASSETS
Allowance for credit losses						12,683
Commercial Real Estate | ASU 2016-13 | Construction and Land Development
ASSETS
Allowance for credit losses						13,393
Commercial Real Estate | ASU 2016-13 | Reported Pre Adoption
ASSETS
Allowance for credit losses						19,265
Commercial Real Estate | ASU 2016-13 | Reported Pre Adoption | Real Estate Term
ASSETS
Allowance for credit losses						12,275
Commercial Real Estate | ASU 2016-13 | Reported Pre Adoption | Construction and Land Development
ASSETS
Allowance for credit losses						6,990
Commercial Real Estate | ASU 2016-13 | Impact of ASC 326 Adoption
ASSETS
Allowance for credit losses						6,811
Commercial Real Estate | ASU 2016-13 | Impact of ASC 326 Adoption | Real Estate Term
ASSETS
Allowance for credit losses						408
Commercial Real Estate | ASU 2016-13 | Impact of ASC 326 Adoption | Construction and Land Development
ASSETS
Allowance for credit losses						6,403
Commercial and Industrial Loans | ASU 2016-13
ASSETS
Allowance for credit losses						11,541
Commercial and Industrial Loans | ASU 2016-13 | Reported Pre Adoption
ASSETS
Allowance for credit losses						10,892
Commercial and Industrial Loans | ASU 2016-13 | Impact of ASC 326 Adoption
ASSETS
Allowance for credit losses						649
Consumer
ASSETS
Allowance for credit losses	3,176		1,982
Consumer | Residential and Home Equity
ASSETS
Allowance for credit losses	2,869		1,662
Consumer | Consumer and Other
ASSETS
Allowance for credit losses	$ 307		$ 320
Consumer | ASU 2016-13
ASSETS
Allowance for credit losses						3,275
Consumer | ASU 2016-13 | Residential and Home Equity
ASSETS
Allowance for credit losses						2,635
Consumer | ASU 2016-13 | Consumer and Other
ASSETS
Allowance for credit losses						640
Consumer | ASU 2016-13 | Reported Pre Adoption
ASSETS
Allowance for credit losses						1,269
Consumer | ASU 2016-13 | Reported Pre Adoption | Residential and Home Equity
ASSETS
Allowance for credit losses						1,118
Consumer | ASU 2016-13 | Reported Pre Adoption | Consumer and Other
ASSETS
Allowance for credit losses						151
Consumer | ASU 2016-13 | Impact of ASC 326 Adoption
ASSETS
Allowance for credit losses						2,006
Consumer | ASU 2016-13 | Impact of ASC 326 Adoption | Residential and Home Equity
ASSETS
Allowance for credit losses						1,517
Consumer | ASU 2016-13 | Impact of ASC 326 Adoption | Consumer and Other
ASSETS
Allowance for credit losses						$ 489

Investment Securities - Summary

Investment Securities - Summary of Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Amortized Cost	$ 1,496,241	$ 1,301,435
Available for Sale, Gross Unrealized Gains	8,927	19,238
Available for Sale, Gross Unrealized Losses, Less Than 12 Months	(13,342)	(134)
Available for Sale, Gross Unrealized Losses, 12 Months or Longer	(119)	(146)
Available for Sale, Fair Value	1,491,707	1,320,393
U.S. Government Sponsored Securities
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Amortized Cost	12,373	12,844
Available for Sale, Gross Unrealized Gains	252	369
Available for Sale, Gross Unrealized Losses, Less Than 12 Months	(3)
Available for Sale, Gross Unrealized Losses, 12 Months or Longer	(3)	(8)
Available for Sale, Fair Value	12,619	13,205
Mortgage-backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Amortized Cost	1,448,728	1,247,581
Available for Sale, Gross Unrealized Gains	7,677	17,587
Available for Sale, Gross Unrealized Losses, Less Than 12 Months	(13,339)	(134)
Available for Sale, Gross Unrealized Losses, 12 Months or Longer	(4)	(8)
Available for Sale, Fair Value	1,443,062	1,265,026
Municipal Securities
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Amortized Cost	30,140	36,010
Available for Sale, Gross Unrealized Gains	989	1,277
Available for Sale, Fair Value	31,129	37,287
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Amortized Cost	5,000	5,000
Available for Sale, Gross Unrealized Gains	9	5
Available for Sale, Gross Unrealized Losses, 12 Months or Longer	(112)	(130)
Available for Sale, Fair Value	$ 4,897	$ 4,875

Investment Securities - Summa_2

Investment Securities - Summary of Gross Unrealized Losses and Fair Value for Securities Available for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Available-for-Sale and Held-to-Maturity Securities Continuous Unrealized Loss Position [Line Items]
Available for Sale, Less Than 12 Months, Fair Value	$ 858,397	$ 76,978
Available for Sale, 12 Months or More, Fair Value	4,045	5,432
Available for Sale, Fair Value, Total	862,442	82,410
Available for Sale, Less Than 12 Months, Unrealized Losses	(13,342)	(134)
Available for Sale, 12 Months or More, Unrealized Losses	(119)	(146)
Available for Sale, Unrealized Losses, Total	(13,461)	(280)
Corporate Securities
Available-for-Sale and Held-to-Maturity Securities Continuous Unrealized Loss Position [Line Items]
Available for Sale, 12 Months or More, Fair Value	2,887	2,870
Available for Sale, Fair Value, Total	2,887	2,870
Available for Sale, 12 Months or More, Unrealized Losses	(112)	(130)
Available for Sale, Unrealized Losses, Total	(112)	(130)
U.S. Government Sponsored Securities
Available-for-Sale and Held-to-Maturity Securities Continuous Unrealized Loss Position [Line Items]
Available for Sale, Less Than 12 Months, Fair Value	225
Available for Sale, 12 Months or More, Fair Value	568	777
Available for Sale, Fair Value, Total	793	777
Available for Sale, Less Than 12 Months, Unrealized Losses	(3)
Available for Sale, 12 Months or More, Unrealized Losses	(3)	(8)
Available for Sale, Unrealized Losses, Total	(6)	(8)
Mortgage-backed Securities
Available-for-Sale and Held-to-Maturity Securities Continuous Unrealized Loss Position [Line Items]
Available for Sale, Less Than 12 Months, Fair Value	858,172	76,978
Available for Sale, 12 Months or More, Fair Value	590	1,785
Available for Sale, Fair Value, Total	858,762	78,763
Available for Sale, Less Than 12 Months, Unrealized Losses	(13,339)	(134)
Available for Sale, 12 Months or More, Unrealized Losses	(4)	(8)
Available for Sale, Unrealized Losses, Total	$ (13,343)	$ (142)

Investment Securities - Summa_3

Investment Securities - Summary of Amortized Cost of Debt Securities Available for Sale Aggregated by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Amortized Cost	$ 1,496,241	$ 1,301,435
Available for Sale, Gross Unrealized Gains	8,927	19,238
Available for Sale, Gross Unrealized Losses, Less Than 12 Months	(13,342)	(134)
Available for Sale, Gross Unrealized Losses, 12 Months or Longer	(119)	(146)
Available for Sale, Fair Value	1,491,707	1,320,393
U.S. Government Sponsored Securities
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Amortized Cost	12,373	12,844
Available for Sale, Gross Unrealized Gains	252	369
Available for Sale, Gross Unrealized Losses, Less Than 12 Months	(3)
Available for Sale, Gross Unrealized Losses, 12 Months or Longer	(3)	(8)
Available for Sale, Fair Value	12,619	13,205
U.S. Government Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Amortized Cost	1,461,101	1,260,425
Available for Sale, Gross Unrealized Gains	7,929	17,956
Available for Sale, Gross Unrealized Losses, Less Than 12 Months	(13,342)	(134)
Available for Sale, Gross Unrealized Losses, 12 Months or Longer	(7)	(16)
Available for Sale, Fair Value	1,455,681	1,278,231
Investment Grade Rating
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Amortized Cost	28,651	33,063
Available for Sale, Gross Unrealized Gains	785	1,008
Available for Sale, Gross Unrealized Losses, 12 Months or Longer	(112)	(130)
Available for Sale, Fair Value	29,324	33,941
Unrated Investment Securities
Schedule Of Available For Sale Securities [Line Items]
Available for Sale, Amortized Cost	6,489	7,947
Available for Sale, Gross Unrealized Gains	213	274
Available for Sale, Fair Value	$ 6,702	$ 8,221

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Value of Investment Securities that are Available for Sale by Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Available for sale Securities by Maturity, Amortized Cost
Available for sale, Securities maturing in one year or less, Amortized cost	$ 11,785
Available for sale, Securities maturing in After one year through five years, Amortized cost	23,612
Available for sale, Securities maturing in After five years through ten years, Amortized cost	25,449
Available for sale, Securities maturing in After ten years, Amortized cost	1,435,395
Available for Sale, Amortized Cost	1,496,241	$ 1,301,435
Available for sale Securities by Maturity, Fair Value
Available for sale, Securities maturing in one year or less, Fair Value	11,882
Available for sale, Securities maturing in After one year through five years, Fair Value	24,225
Available for sale, Securities maturing in After five years through ten years, Fair Value	26,402
Available for sale, Securities maturing in After ten years, Fair Value	1,429,198
Available for sale, Fair Value	$ 1,491,707	$ 1,320,393

Investment Securities - Additio

Investment Securities - Additional Information (Details)	6 Months Ended
	Jun. 30, 2021USD ($)Securities	Jun. 30, 2020USD ($)	Dec. 31, 2020Securities
Investments Debt And Equity Securities [Abstract]
Number of available for sale investment securities with fair value less than amortized cost	55		21
Number of held to maturity securities	0		0
Sales of available for sale securities | $	$ 131,000,000	$ 0
Gain on sales of available for sale securities | $	$ 200,000
Available for sale securities in a nonaccrual status	0		0

Loans and Allowance for Credi_3

Loans and Allowance for Credit Losses - Summary of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Total gross loans	$ 1,880,927		$ 1,701,751
Net deferred loan fees	(7,242)		(6,255)
Total loans held for investment	1,873,685		1,695,496
Allowance for credit losses	(34,958)	$ (41,013)	(41,236)	$ (42,683)	$ (41,253)	$ (31,426)
Total loans held for investment, net	1,838,727		1,654,260
Real Estate Term
Accounts Notes And Loans Receivable [Line Items]
Allowance for credit losses	(15,167)	(19,820)	(20,627)	(12,507)	(12,997)	(12,275)
Construction and Land Development
Accounts Notes And Loans Receivable [Line Items]
Allowance for credit losses	(11,331)	(12,848)	(10,532)	(15,121)	(13,677)	(6,990)
Residential and Home Equity
Accounts Notes And Loans Receivable [Line Items]
Allowance for credit losses	(2,869)	(2,262)	(1,662)	(2,767)	(2,553)	(1,118)
Consumer and Other
Accounts Notes And Loans Receivable [Line Items]
Allowance for credit losses	(307)	(327)	(320)	(528)	(558)	(151)
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total gross loans	1,380,819		1,250,093
Commercial Real Estate | Real Estate Term
Accounts Notes And Loans Receivable [Line Items]
Total gross loans	1,092,120		1,021,880
Commercial Real Estate | Construction and Land Development
Accounts Notes And Loans Receivable [Line Items]
Total gross loans	288,699		228,213
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Total gross loans	225,050		257,240
Allowance for credit losses	(5,284)	$ (5,756)	(8,095)	$ (11,760)	$ (11,468)	$ (10,892)
Consumer
Accounts Notes And Loans Receivable [Line Items]
Total gross loans	275,058		194,418
Consumer | Residential and Home Equity
Accounts Notes And Loans Receivable [Line Items]
Total gross loans	265,680		185,470
Consumer | Consumer and Other
Accounts Notes And Loans Receivable [Line Items]
Total gross loans	$ 9,378		$ 8,948

Loans and Allowance for Credi_4

Loans and Allowance for Credit Losses - Additional Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)Loan	Dec. 31, 2020USD ($)
Financing Receivable Impaired [Line Items]
Total gross loans	$ 1,880,927	$ 1,701,751
Non-accrual loans	7,232	9,019
Total trouble debt restructurings met criteria to be delisted for reporting purposes	4,779	10,467
Loans and leases collateral dependent loans less government guarantees	3,800	8,800
Available lines of credit for loans and credit cards to affiliates	10,900	11,300
Deposits from affiliates	23,400	7,800
Affiliates
Financing Receivable Impaired [Line Items]
Outstanding loans with affiliates	17,200	11,700
Non-performing Assets | U.S. Government Guarantees
Financing Receivable Impaired [Line Items]
Non-accrual loans	4,000	4,200
Troubled Debt Restructured Loans
Financing Receivable Impaired [Line Items]
Total trouble debt restructurings met criteria to be delisted for reporting purposes	5,900
Commercial and Industrial
Financing Receivable Impaired [Line Items]
Total gross loans	225,050	257,240
Non-accrual loans	1,370	$ 2,194
Commercial and Industrial | SBA PPP Loans
Financing Receivable Impaired [Line Items]
Total gross loans	$ 47,500
Number of loan segments | Loan	260

Loans and Allowance for Credi_5

Loans and Allowance for Credit Losses - Summary of Changes in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	$ 41,013	$ 41,253	$ 41,236	$ 31,426
Accounting Standards Update [Extensible List]				ASU 2016-13
Provision for credit losses	(6,381)	2,100	(6,381)	$ 2,750
Gross loan charge-offs	(20)	(857)	(990)	(1,409)
Recoveries	346	187	1,093	450
Net loan (charge-offs) / recoveries	326	(670)	103	(959)
Balance at end of period	34,958	42,683	34,958	42,683
Impact of ASC 326 Adoption
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period				9,466
Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	19,820	12,997	20,627	12,275
Provision for credit losses	(4,653)	(460)	(5,460)	(132)
Gross loan charge-offs		(99)		(113)
Recoveries		69		69
Net loan (charge-offs) / recoveries		(30)		(44)
Balance at end of period	15,167	12,507	15,167	12,507
Real Estate Term | Impact of ASC 326 Adoption
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period				408
Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	12,848	13,677	10,532	6,990
Provision for credit losses	(1,518)	1,452	796	1,752
Gross loan charge-offs		(43)		(73)
Recoveries	1	35	3	49
Net loan (charge-offs) / recoveries	1	(8)	3	(24)
Balance at end of period	11,331	15,121	11,331	15,121
Construction and Land Development | Impact of ASC 326 Adoption
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period				6,403
Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	2,262	2,553	1,662	1,118
Provision for credit losses	587	211	1,185	107
Recoveries	20	3	22	25
Net loan (charge-offs) / recoveries	20	3	22	25
Balance at end of period	2,869	2,767	2,869	2,767
Residential and Home Equity | Impact of ASC 326 Adoption
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period				1,517
Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	327	558	320	151
Provision for credit losses	(41)	(8)	(39)	(69)
Gross loan charge-offs	(20)	(61)	(68)	(183)
Recoveries	41	39	94	140
Net loan (charge-offs) / recoveries	21	(22)	26	(43)
Balance at end of period	307	528	307	528
Consumer and Other | Impact of ASC 326 Adoption
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period				489
Commercial and Industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period	5,756	11,468	8,095	10,892
Provision for credit losses	(756)	905	(2,863)	1,092
Gross loan charge-offs		(654)	(922)	(1,040)
Recoveries	284	41	974	167
Net loan (charge-offs) / recoveries	284	(613)	52	(873)
Balance at end of period	$ 5,284	$ 11,760	$ 5,284	11,760
Commercial and Industrial | Impact of ASC 326 Adoption
Financing Receivable Allowance For Credit Losses [Line Items]
Balance at beginning of period				$ 649

Loans and Allowance for Credi_6

Loans and Allowance for Credit Losses - Summary of Non Accrual Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans, not troubled debt restructured	$ 2,662	$ 1,326
Troubled debt restructured loans, non-accrual	4,570	7,693
Total non-accrual loans	7,232	9,019
Real Estate Term
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans, not troubled debt restructured	1,482	150
Troubled debt restructured loans, non-accrual	4,346	6,421
Commercial and Industrial Loans
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans, not troubled debt restructured	1,146	922
Troubled debt restructured loans, non-accrual	224	1,272
Residential and Home Equity
Financing Receivable Nonaccrual Status [Line Items]
Non-accrual loans, not troubled debt restructured	$ 34	$ 254

Loans and Allowance for Credi_7

Loans and Allowance for Credit Losses - Summary of Troubled Debt Restructure Loans (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)Loan	Dec. 31, 2020USD ($)
Financing Receivable Modifications [Line Items]
Accruing troubled debt restructured loans | $	$ 209	$ 2,774
Non-accrual troubled debt restructured loans | $	4,570	7,693
Total troubled debt restructured loans | $	$ 4,779	$ 10,467
# of Accruing TDR | Loan	2
# of Non-accrual TDR | Loan	5
# of Total TDR | Loan	7
2020
Financing Receivable Modifications [Line Items]
Accruing troubled debt restructured loans | $	$ 10
Total troubled debt restructured loans | $	$ 10
# of Accruing TDR | Loan	1
# of Total TDR | Loan	1
2019
Financing Receivable Modifications [Line Items]
Accruing troubled debt restructured loans | $	$ 199
Non-accrual troubled debt restructured loans | $	4,570
Total troubled debt restructured loans | $	$ 4,769
# of Accruing TDR | Loan	1
# of Non-accrual TDR | Loan	5
# of Total TDR | Loan	6

Loans and Allowance for Credi_8

Loans and Allowance for Credit Losses - Summary of Changes in Troubled Debt Restructure Loans (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)Loan	Jun. 30, 2020USD ($)Loan	Dec. 31, 2020USD ($)
Financing Receivable Modifications [Line Items]
# of Accruing TDR | Loan	2
Accruing troubled debt restructured loans	$ 209		$ 2,774
# of Non-accrual TDR | Loan	5
Non-accrual troubled debt restructured loans	$ 4,570		7,693
# of Total TDR | Loan	7
Total troubled debt restructured loans	$ 4,779		10,467
Number of loans | Loan		1
Pre-modification balance		$ 113
Post-modification balance		$ 113
Number of loans, subsequently defaulted | Loan		1
Pre-modification balance, subsequently defaulted		$ 113
Real Estate Term
Financing Receivable Modifications [Line Items]
Non-accrual troubled debt restructured loans	$ 4,346		$ 6,421
Number of loans | Loan		1
Pre-modification balance		$ 113
Post-modification balance		$ 113
Number of loans, subsequently defaulted | Loan		1
Pre-modification balance, subsequently defaulted		$ 113
Loan Payment Deferment
Financing Receivable Modifications [Line Items]
# of Non-accrual TDR | Loan		1
Non-accrual troubled debt restructured loans		$ 113
# of Total TDR | Loan		1
Total troubled debt restructured loans		$ 113

Loans and Allowance for Credi_9

Loans and Allowance for Credit Losses - Summary of Current and Past Due Loans Held For Investment (Accruing And Non-Accruing) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable Recorded Investment Past Due [Line Items]
Current	$ 1,868,402	$ 1,688,070
30-89 Days Past Due	5,293	4,617
90+ Days Past Due		45
Non-accrual	7,232	9,019
Total Past-Due	12,525	13,681
Total Loans	1,880,927	1,701,751
Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Current	1,371,756	1,240,968
30-89 Days Past Due	3,235	2,554
Non-accrual	5,828	6,571
Total Past-Due	9,063	9,125
Total Loans	1,380,819	1,250,093
Commercial Real Estate | Real Estate Term
Financing Receivable Recorded Investment Past Due [Line Items]
Current	1,083,090	1,013,914
30-89 Days Past Due	3,202	1,395
Non-accrual	5,828	6,571
Total Past-Due	9,030	7,966
Total Loans	1,092,120	1,021,880
Commercial Real Estate | Construction and Land Development
Financing Receivable Recorded Investment Past Due [Line Items]
Current	288,666	227,054
30-89 Days Past Due	33	1,159
Total Past-Due	33	1,159
Total Loans	288,699	228,213
Commercial and Industrial Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Current	221,904	253,833
30-89 Days Past Due	1,776	1,170
90+ Days Past Due		43
Non-accrual	1,370	2,194
Total Past-Due	3,146	3,407
Total Loans	225,050	257,240
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Current	274,742	193,269
30-89 Days Past Due	282	893
90+ Days Past Due		2
Non-accrual	34	254
Total Past-Due	316	1,149
Total Loans	275,058	194,418
Consumer | Residential and Home Equity
Financing Receivable Recorded Investment Past Due [Line Items]
Current	265,601	184,566
30-89 Days Past Due	45	650
Non-accrual	34	254
Total Past-Due	79	904
Total Loans	265,680	185,470
Consumer | Consumer and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Current	9,141	8,703
30-89 Days Past Due	237	243
90+ Days Past Due		2
Total Past-Due	237	245
Total Loans	$ 9,378	$ 8,948

Loans and Allowance for Cred_10

Loans and Allowance for Credit Losses - Summary of Outstanding Loan Balances (Accruing and Non - Accruing) Categorized by Credit Quality Indicators (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	$ 1,880,927	$ 1,701,751
Allowance for credit losses	34,958	41,236
Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,380,819	1,250,093
Allowance for credit losses	26,498	31,159
Commercial Real Estate | Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,092,120	1,021,880
Allowance for credit losses	15,167	20,627
Commercial Real Estate | Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	288,699	228,213
Allowance for credit losses	11,331	10,532
Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	275,058	194,418
Allowance for credit losses	3,176	1,982
Consumer | Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	265,680	185,470
Allowance for credit losses	2,869	1,662
Consumer | Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	9,378	8,948
Allowance for credit losses	307	320
Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	225,050	257,240
Allowance for credit losses	5,284	8,095
Pass
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,825,560	1,643,248
Pass | Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,337,948	1,203,011
Pass | Commercial Real Estate | Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,049,629	978,945
Pass | Commercial Real Estate | Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	288,319	224,066
Pass | Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	274,021	192,254
Pass | Consumer | Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	264,643	183,306
Pass | Consumer | Consumer and Other
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	9,378	8,948
Pass | Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	213,591	247,983
Special Mention
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	25,416	25,381
Special Mention | Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	19,312	21,033
Special Mention | Commercial Real Estate | Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	18,932	17,248
Special Mention | Commercial Real Estate | Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	380	3,785
Special Mention | Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	6,104	4,348
Substandard
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	29,901	32,233
Substandard | Commercial Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	23,559	26,049
Substandard | Commercial Real Estate | Real Estate Term
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	23,559	25,687
Substandard | Commercial Real Estate | Construction and Land Development
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans		362
Substandard | Consumer
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,037	2,164
Substandard | Consumer | Residential and Home Equity
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	1,037	2,164
Substandard | Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	5,305	4,020
Doubtful
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	50	889
Doubtful | Commercial and Industrial Loans
Financing Receivable Allowance For Credit Losses [Line Items]
Total Loans	$ 50	$ 889

Loans and Allowance for Cred_11

Loans and Allowance for Credit Losses - Summary of Outstanding Loan Balances By Credit Quality Indicators And Vintage Year By Class Of Financing Receivable (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	$ 278,261
Term Loans Amortized Cost Basis by Origination Year, 2020	381,435
Term Loans Amortized Cost Basis by Origination Year, 2019	167,195
Term Loans Amortized Cost Basis by Origination Year, 2018	127,490
Term Loans Amortized Cost Basis by Origination Year, 2017	119,091
Term Loans Amortized Cost Basis by Origination Year, Prior	311,031
Revolving Loans Amortized Cost	496,424
Total	1,880,927	$ 1,701,751
Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	129,701
Term Loans Amortized Cost Basis by Origination Year, 2020	265,751
Term Loans Amortized Cost Basis by Origination Year, 2019	122,156
Term Loans Amortized Cost Basis by Origination Year, 2018	86,412
Term Loans Amortized Cost Basis by Origination Year, 2017	90,811
Term Loans Amortized Cost Basis by Origination Year, Prior	236,316
Revolving Loans Amortized Cost	449,672
Total	1,380,819	1,250,093
Commercial Real Estate | Real Estate Term
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	122,311
Term Loans Amortized Cost Basis by Origination Year, 2020	257,794
Term Loans Amortized Cost Basis by Origination Year, 2019	119,339
Term Loans Amortized Cost Basis by Origination Year, 2018	78,711
Term Loans Amortized Cost Basis by Origination Year, 2017	89,862
Term Loans Amortized Cost Basis by Origination Year, Prior	227,882
Revolving Loans Amortized Cost	196,221
Total	1,092,120	1,021,880
Commercial Real Estate | Real Estate Term | Pass
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	122,311
Term Loans Amortized Cost Basis by Origination Year, 2020	256,571
Term Loans Amortized Cost Basis by Origination Year, 2019	116,584
Term Loans Amortized Cost Basis by Origination Year, 2018	75,650
Term Loans Amortized Cost Basis by Origination Year, 2017	85,369
Term Loans Amortized Cost Basis by Origination Year, Prior	209,569
Revolving Loans Amortized Cost	183,575
Total	1,049,629
Commercial Real Estate | Real Estate Term | Special Mention
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2018	653
Term Loans Amortized Cost Basis by Origination Year, 2017	3,086
Term Loans Amortized Cost Basis by Origination Year, Prior	13,851
Revolving Loans Amortized Cost	1,342
Total	18,932
Commercial Real Estate | Real Estate Term | Substandard
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2020	1,223
Term Loans Amortized Cost Basis by Origination Year, 2019	2,755
Term Loans Amortized Cost Basis by Origination Year, 2018	2,408
Term Loans Amortized Cost Basis by Origination Year, 2017	1,407
Term Loans Amortized Cost Basis by Origination Year, Prior	4,462
Revolving Loans Amortized Cost	11,304
Total	23,559
Commercial Real Estate | Construction and Land Development
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	7,390
Term Loans Amortized Cost Basis by Origination Year, 2020	7,957
Term Loans Amortized Cost Basis by Origination Year, 2019	2,817
Term Loans Amortized Cost Basis by Origination Year, 2018	7,701
Term Loans Amortized Cost Basis by Origination Year, 2017	949
Term Loans Amortized Cost Basis by Origination Year, Prior	8,434
Revolving Loans Amortized Cost	253,451
Total	288,699	228,213
Commercial Real Estate | Construction and Land Development | Pass
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	7,390
Term Loans Amortized Cost Basis by Origination Year, 2020	7,957
Term Loans Amortized Cost Basis by Origination Year, 2019	2,817
Term Loans Amortized Cost Basis by Origination Year, 2018	7,701
Term Loans Amortized Cost Basis by Origination Year, 2017	949
Term Loans Amortized Cost Basis by Origination Year, Prior	8,434
Revolving Loans Amortized Cost	253,071
Total	288,319
Commercial Real Estate | Construction and Land Development | Special Mention
Financing Receivable Recorded Investment [Line Items]
Revolving Loans Amortized Cost	380
Total	380
Commercial and Industrial Loans
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	38,518
Term Loans Amortized Cost Basis by Origination Year, 2020	38,618
Term Loans Amortized Cost Basis by Origination Year, 2019	22,738
Term Loans Amortized Cost Basis by Origination Year, 2018	25,181
Term Loans Amortized Cost Basis by Origination Year, 2017	13,368
Term Loans Amortized Cost Basis by Origination Year, Prior	44,278
Revolving Loans Amortized Cost	42,349
Total	225,050	257,240
Commercial and Industrial Loans | Pass
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	38,518
Term Loans Amortized Cost Basis by Origination Year, 2020	38,488
Term Loans Amortized Cost Basis by Origination Year, 2019	22,136
Term Loans Amortized Cost Basis by Origination Year, 2018	21,649
Term Loans Amortized Cost Basis by Origination Year, 2017	12,182
Term Loans Amortized Cost Basis by Origination Year, Prior	42,699
Revolving Loans Amortized Cost	37,919
Total	213,591
Commercial and Industrial Loans | Special Mention
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2020	28
Term Loans Amortized Cost Basis by Origination Year, 2018	2,304
Term Loans Amortized Cost Basis by Origination Year, 2017	755
Term Loans Amortized Cost Basis by Origination Year, Prior	108
Revolving Loans Amortized Cost	2,909
Total	6,104
Commercial and Industrial Loans | Substandard
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2020	102
Term Loans Amortized Cost Basis by Origination Year, 2019	602
Term Loans Amortized Cost Basis by Origination Year, 2018	1,178
Term Loans Amortized Cost Basis by Origination Year, 2017	431
Term Loans Amortized Cost Basis by Origination Year, Prior	1,471
Revolving Loans Amortized Cost	1,521
Total	5,305
Commercial and Industrial Loans | Doubtful
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2018	50
Total	50
Consumer
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	110,042
Term Loans Amortized Cost Basis by Origination Year, 2020	77,066
Term Loans Amortized Cost Basis by Origination Year, 2019	22,301
Term Loans Amortized Cost Basis by Origination Year, 2018	15,897
Term Loans Amortized Cost Basis by Origination Year, 2017	14,912
Term Loans Amortized Cost Basis by Origination Year, Prior	30,437
Revolving Loans Amortized Cost	4,403
Total	275,058	194,418
Consumer | Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	105,999
Term Loans Amortized Cost Basis by Origination Year, 2020	75,272
Term Loans Amortized Cost Basis by Origination Year, 2019	20,901
Term Loans Amortized Cost Basis by Origination Year, 2018	15,036
Term Loans Amortized Cost Basis by Origination Year, 2017	14,488
Term Loans Amortized Cost Basis by Origination Year, Prior	29,581
Revolving Loans Amortized Cost	4,403
Total	265,680
Consumer | Residential Real Estate [Member] | Pass
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	105,999
Term Loans Amortized Cost Basis by Origination Year, 2020	74,682
Term Loans Amortized Cost Basis by Origination Year, 2019	20,901
Term Loans Amortized Cost Basis by Origination Year, 2018	14,991
Term Loans Amortized Cost Basis by Origination Year, 2017	14,251
Term Loans Amortized Cost Basis by Origination Year, Prior	29,416
Revolving Loans Amortized Cost	4,403
Total	264,643
Consumer | Residential Real Estate [Member] | Substandard
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2020	590
Term Loans Amortized Cost Basis by Origination Year, 2018	45
Term Loans Amortized Cost Basis by Origination Year, 2017	237
Term Loans Amortized Cost Basis by Origination Year, Prior	165
Total	1,037
Consumer | Consumer and Other
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	4,043
Term Loans Amortized Cost Basis by Origination Year, 2020	1,794
Term Loans Amortized Cost Basis by Origination Year, 2019	1,400
Term Loans Amortized Cost Basis by Origination Year, 2018	861
Term Loans Amortized Cost Basis by Origination Year, 2017	424
Term Loans Amortized Cost Basis by Origination Year, Prior	856
Total	9,378	$ 8,948
Consumer | Consumer and Other | Pass
Financing Receivable Recorded Investment [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2021	4,043
Term Loans Amortized Cost Basis by Origination Year, 2020	1,794
Term Loans Amortized Cost Basis by Origination Year, 2019	1,400
Term Loans Amortized Cost Basis by Origination Year, 2018	861
Term Loans Amortized Cost Basis by Origination Year, 2017	424
Term Loans Amortized Cost Basis by Origination Year, Prior	856
Total	$ 9,378

Loans and Allowance for Cred_12

Loans and Allowance for Credit Losses - Summary of Amortized Cost Basis of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	$ 2,913	$ 5,904
Commercial Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	1,871	4,480
Commercial Real Estate | Real Estate Term
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	1,871	4,118
Commercial Real Estate | Construction and Land Development
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans		362
Commercial and Industrial Loans
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	482	1,208
Consumer
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	560	216
Consumer | Residential and Home Equity
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	560	216
Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	2,431	4,696
Real Estate | Commercial Real Estate
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	1,871	4,480
Real Estate | Commercial Real Estate | Real Estate Term
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	1,871	4,118
Real Estate | Commercial Real Estate | Construction and Land Development
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans		362
Real Estate | Consumer
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	560	216
Real Estate | Consumer | Residential and Home Equity
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	560	216
Accounts Receivable
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	432	1,165
Accounts Receivable | Commercial and Industrial Loans
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	432	1,165
Auto
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	50	43
Auto | Commercial and Industrial Loans
Loans And Leases Receivable Disclosure [Line Items]
Total collateral dependent loans	$ 50	$ 43

Loans and Allowance for Cred_13

Loans and Allowance for Credit Losses - Summary of Changes in Accretable Yield for Non-PCD Loans (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance, beginning of period	$ 2,803	$ 4,247
Accretion to interest income	(532)	(1,192)
Reclassification from non-accretable difference		402
Balance, end of period	$ 2,271	$ 3,457

Commitments and Contingencies -

Commitments and Contingencies - Summary of Contractual Amounts of Off-balance Sheet Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Commitments to Extend Credit
Commitments And Contingencies [Line Items]
Off-balance sheet financial instrument, contractual amount	$ 813,317	$ 656,914
Stand-by Letters of Credit and Bond Commitments
Commitments And Contingencies [Line Items]
Off-balance sheet financial instrument, contractual amount	36,242	26,036
Unused Credit Card Lines, All Unsecured
Commitments And Contingencies [Line Items]
Off-balance sheet financial instrument, contractual amount	$ 29,237	$ 29,111

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Contractual Amounts of Off-balance Sheet Financial Instruments (Parenthetical) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Unsecured Commitments Included in Commitments to Extend Credit
Commitments And Contingencies [Line Items]
Off-balance sheet financial instrument, contractual amount	$ 12,276	$ 12,039
Unsecured Commitments Included in Stand-by Letters of Credit and Bond Commitments
Commitments And Contingencies [Line Items]
Off-balance sheet financial instrument, contractual amount	$ 1,079	$ 727

Fair Value - Summary of Estimat

Fair Value - Summary of Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financial Assets:
Investment securities available for sale	$ 1,491,707	$ 1,320,393
Level 1 | Carrying Amount
Financial Assets:
Cash and cash equivalents	63,329	239,874
Level 1 | Estimated Fair Value
Financial Assets:
Cash and cash equivalents	63,329	239,874
Level 2 | Carrying Amount
Financial Assets:
Investment securities available for sale	1,485,005	1,312,172
Non-marketable securities	4,042	2,890
Loans held for sale	6,672	14,152
Financial Liabilities:
Total deposits	3,156,707	2,916,308
Level 2 | Estimated Fair Value
Financial Assets:
Investment securities available for sale	1,485,005	1,312,172
Non-marketable securities	4,042	2,890
Loans held for sale	6,672	14,152
Financial Liabilities:
Total deposits	2,862,951	2,751,715
Level 3 | Carrying Amount
Financial Assets:
Investment securities available for sale	6,702	8,221
Loans held for investment	1,838,727	1,654,260
Level 3 | Estimated Fair Value
Financial Assets:
Investment securities available for sale	6,702	8,221
Loans held for investment	$ 1,792,740	$ 1,618,743

Fair Value - Summary of Asset M

Fair Value - Summary of Asset Measured at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	$ 1,491,707	$ 1,320,393
Fair Valued on a Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	1,491,707	1,320,393
Fair Valued on a Non-Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Individually evaluated loans	425	1,804
Level 2 | Fair Valued on a Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	1,485,005	1,312,172
Level 3 | Fair Valued on a Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Investment securities available for sale	6,702	8,221
Level 3 | Fair Valued on a Non-Recurring Basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Individually evaluated loans	$ 425	$ 1,804

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense	$ 4,034	$ 3,192	$ 7,031	$ 6,569
Effective tax rate	24.10%	23.60%	24.10%	23.70%

Regulatory Capital Matters - Su

Regulatory Capital Matters - Summary of Actual and Required Capital Amounts and Ratios (Details)	Jun. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
CET1 Capital to Risk-Weighted Assets, Actual Amount	$ 346,137,000	$ 329,049,000
Tier 1 Capital to Risk-Weighted Assets, Actual Amount	346,137,000	329,049,000
Total Risk-Based Capital to Risk-Weighted Assets, Actual Amount	371,877,000	352,266,000
Tier 1 Leverage, Actual Amount	346,137,000	329,049,000
CET1 Capital to Risk-Weighted Assets, Minimum Capital Requirement Amount	92,093,000	82,679,000
Tier 1 Capital to Risk-Weighted Assets, Minimum Capital Requirement Amount	122,791,000	110,239,000
Total Risk-Based Capital to Risk-Weighted Assets, Minimum Capital Requirement Amount	163,721,000	146,985,000
Tier 1 Leverage, Minimum Capital Requirement Amount	140,640,000	125,681,000
CET1 Capital to Risk-Weighted Assets, Well Capitalized Requirement Amount	133,024,000	119,426,000
Tier 1 Capital to Risk-Weighted Assets, Well Capitalized Requirement Amount	163,721,000	146,985,000
Total Risk-Based Capital to Risk-Weighted Assets, Well Capitalized Requirement Amount	$ 204,652,000	$ 183,732,000
CET1 Capital to Risk-Weighted Assets, Actual Ratio	16.91	17.91
Tier 1 Capital to Risk-Weighted Assets, Actual Ratio	16.91	17.91
Total Risk-Based Capital to Risk-Weighted Assets, Actual Ratio	18.17	19.17
Tier 1 Leverage, Actual Ratio	9.84	10.47
CET1 Capital to Risk-Weighted Assets, Minimum Capital Requirement Ratio	4.50	4.50
Tier 1 Capital to Risk-Weighted Assets, Minimum Capital Requirement Ratio	6	6
Total Risk-Based Capital to Risk-Weighted Assets, Minimum Capital Requirement Ratio	8	8
Tier 1 Leverage, Minimum Capital Requirement Ratio	4	4
CET1 Capital to Risk-Weighted Assets, Well Capitalized Requirement Ratio	6.50	6.50
Tier 1 Capital to Risk-Weighted Assets, Well Capitalized Requirement Ratio	8	8
Total Risk-Based Capital to Risk-Weighted Assets, Well Capitalized Requirement Ratio	10	10
Altabank
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
CET1 Capital to Risk-Weighted Assets, Actual Amount	$ 339,013,000	$ 322,783,000
Tier 1 Capital to Risk-Weighted Assets, Actual Amount	339,013,000	322,783,000
Total Risk-Based Capital to Risk-Weighted Assets, Actual Amount	364,740,000	345,973,000
Tier 1 Leverage, Actual Amount	339,013,000	322,793,000
CET1 Capital to Risk-Weighted Assets, Minimum Capital Requirement Amount	92,045,000	82,578,000
Tier 1 Capital to Risk-Weighted Assets, Minimum Capital Requirement Amount	122,727,000	110,104,000
Total Risk-Based Capital to Risk-Weighted Assets, Minimum Capital Requirement Amount	163,636,000	146,806,000
Tier 1 Leverage, Minimum Capital Requirement Amount	140,664,000	126,795,000
CET1 Capital to Risk-Weighted Assets, Well Capitalized Requirement Amount	132,954,000	119,280,000
Tier 1 Capital to Risk-Weighted Assets, Well Capitalized Requirement Amount	163,636,000	146,806,000
Total Risk-Based Capital to Risk-Weighted Assets, Well Capitalized Requirement Amount	204,545,000	183,507,000
Tier 1 Leverage, Well Capitalized Requirement Amount	$ 175,830,000	$ 158,493,000
CET1 Capital to Risk-Weighted Assets, Actual Ratio	16.57	17.59
Tier 1 Capital to Risk-Weighted Assets, Actual Ratio	16.57	17.59
Total Risk-Based Capital to Risk-Weighted Assets, Actual Ratio	17.83	18.85
Tier 1 Leverage, Actual Ratio	9.64	10.18
CET1 Capital to Risk-Weighted Assets, Minimum Capital Requirement Ratio	4.50	4.50
Tier 1 Capital to Risk-Weighted Assets, Minimum Capital Requirement Ratio	6	6
Total Risk-Based Capital to Risk-Weighted Assets, Minimum Capital Requirement Ratio	8	8
Tier 1 Leverage, Minimum Capital Requirement Ratio	4	4
CET1 Capital to Risk-Weighted Assets, Well Capitalized Requirement Ratio	6.50	6.50
Tier 1 Capital to Risk-Weighted Assets, Well Capitalized Requirement Ratio	8	8
Total Risk-Based Capital to Risk-Weighted Assets, Well Capitalized Requirement Ratio	10	10
Tier 1 Leverage, Well Capitalized Requirement Ratio	5	5

Regulatory Capital Matters - Ad

Regulatory Capital Matters - Additional Information (Details)	Mar. 26, 2020
Regulatory Capital Requirements [Abstract]
Reduced reserve requirement ratio	0.00%

Incentive Share-Based Plan an_2

Incentive Share-Based Plan and Other Employee Benefits - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	May 27, 2020	Jun. 30, 2021	Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options issued to purchase common shares		0	0
Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation expense		$ 694	$ 765
RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock units granted		64,402
Fair value of restricted stock units		$ 28.05
Vesting period		3 years
Share-Based Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum number of shares available for issuance under the plan	1,000,000
Maximum | RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		3 years
Maximum | Share-Based Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based awards granted term	10 years
Minimum | RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period		1 year

Merger Agreement - Additional I

Merger Agreement - Additional Information (Details) - GBCI	May 18, 2021USD ($)$ / shares	Jun. 30, 2021USD ($)
Business Acquisition [Line Items]
Conversion ratio of company’s common stock issued and outstanding from shares of GBCI’s common stock	0.7971
Average closing price of GBCI common stock for GBCI may elect to terminate merger agreement, maximum | $ / shares	$ 74.15
Average closing price of GBCI common stock for company may elect to terminate merger agreement, minimum | $ / shares	$ 49.43
Acquisition-related Costs
Business Acquisition [Line Items]
Merger expenses | $		$ 2,200,000
Maximum
Business Acquisition [Line Items]
AB closing capital adjusted amount in accordance with terms of merger agreement | $	$ 342,937,000