A significant source of risk for the Company arises from the possibility that losses will be sustained because borrowers, guarantors and related parties may fail to perform in accordance with the terms of their loan agreements. Most loans originated by the Bank are secured, but some loans are unsecured based upon management's evaluation of the creditworthiness of the borrowers. With respect to secured loans, the collateral securing the repayment of these loans principally includes a wide variety of real estate, and to a lesser extent personal property, either of which may be insufficient to cover the obligations owed under such loans.
Collateral values and the financial performance of borrowers may be adversely affected by changes in prevailing economic, environmental and other conditions, including declines in the value of real estate, changes in interest rates and debt service levels, changes in oil and gas prices, changes in monetary and fiscal policies of the federal government, widespread disease, terrorist activity, environmental contamination and other external events, which are beyond the control of the Company. In addition, collateral appraisals that are out of date or that do not meet industry recognized standards might create the impression that a loan is adequately collateralized when in fact it is not. Although the Company may acquire any real estate or other assets that secure defaulted loans through foreclosures or other similar remedies, the amounts owed under the defaulted loans may exceed the value of the assets acquired.
The Company maintains an allowance for credit losses, which is established through a provision for credit losses charged to earnings that represents management's estimate of expected losses inherent within the Company's existing loans held for investment portfolio. The allowance for credit losses for loans held for investment, as reported in our consolidated balance sheet, is adjusted by a credit loss expense, which is reported in earnings, and reduced by the charge-off of loan amounts, net of recoveries.
The credit loss estimation process involves procedures to appropriately consider the unique characteristics of loan portfolio segments, which consist of commercial real estate loans, residential real estate loans, commercial and industrial loans, and consumer loans. These segments are further disaggregated into loan classes, the level at which credit risk is monitored. For each of these pools, the Company generates cash flow projections at the instrument level wherein payment expectations are adjusted for estimated prepayment speed, curtailments, time to recovery, probability of default, and loss given default. The modeling of expected prepayment speeds, curtailment rates, and time to recovery are based on historical internal data. The quantitative component of the ACL on loans is model-based and utilizes a forward-looking macroeconomic forecast. The Company uses a discounted cash flow method, incorporating probability of default and loss given default forecasted based on statistically derived economic variable loss drivers, to estimate expected credit losses. This process includes estimates which involve modeling loss projections attributable to existing loan balances, and considering historical experience, current conditions, and future expectations for pools of loans over a reasonable and supportable forecast period. The historical information either experienced by the Company or by a selection of peer banks, when appropriate, is derived from a combination of recessionary and non-recessionary performance periods for which data is available.
The allowance for credit losses inherently involves a high degree of subjectivity and requires the Company to make significant estimates of current credit risks and trends, all of which may undergo material changes. In addition, bank regulatory agencies periodically review the Company's allowance for credit losses and may require an increase in the provision for credit losses or the recognition of further loan charge-offs, based on judgments that differ from those of the Company's management. While the Company strives to carefully monitor credit quality and to identify loans that may become nonperforming, it may not be able to identify deteriorating loans before they become nonperforming assets, or be able to limit losses on those loans that have been identified to be nonperforming. On January 1, 2023, the Company adopted ASU 2016-13 Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, which replaced the incurred loss methodology with an expected loss methodology that is referred to as CECL methodology. The adoption of this ASU did not have a material adverse effect on the Company's financial condition and results of operation.