The following table shows the changes in the allowance for loan losses (in thousands):

The following table shows the loan portfolio by segment as follows (in thousands):

The following table shows the loan portfolio allocated by management's internal risk ratings as defined in Footnote 1 in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012 (in thousands):

The allowance for loan losses is established through a provision for loan losses based on management’s evaluation of the probable incurred losses in the loan portfolio. In determining levels of risk, management considers a variety of factors, including, but not limited to, asset classifications, economic trends, industry experience and trends, geographic concentrations, estimated collateral values, historical loan loss experience, and the Company’s underwriting policies. At June 30, 2013, there was a change in the Bank’s method of calculating the historical loss factors applied to loans identified as “homogenous segments” of the loan portfolio as follows: Losses from the past twelve quarters are applied to loan pools based on a “Migration Analysis” method. The method calculates Net Charge Offs (charge offs less corresponding recoveries) and measures them against average balances in loan pools based on the risk grade in effect on charged-off loans four quarters prior to the actual charge off date. The logic behind this four quarter “look back” is to account for management’s estimate of the typical time lapse between the recognition of the problem loan and the recognition of some or all of the loan as uncollectable. In addition, the loss ratios are calculated using “factored” logic which systematically reduces the Net Charge Off value so that charge offs occurring in older periods do not have as much weight as more recent charge offs. Previously, management utilized a methodology which also utilized the Company’s charge-off history from the previous twelve quarters but did not consider the risk grade of those loans related to the charge-off. This modification had the effect of increasing the quantitative loss component of the allowance by $1,446,000. Management of the Company believes that, given the recent trends in historical losses and the correlation of those losses with a loans identified risk grade, that incorporation of a migration analysis in the current and future analyses was a prudent refinement of the allowance methodology. In addition, management believe that the decreases in the overall level of the allowance for loan losses over the past several quarters is directionally consistent with the improving credit quality trends of the loan portfolio. The allowance for loan losses is maintained at an amount management considers adequate to cover the probable incurred losses in loans receivable. While management uses the best information available to make these estimates, future adjustments to allowances may be necessary due to economic, operating, regulatory, and other conditions that may be beyond the Company’s control. The Company also engages a third party credit review consultant to analyze the Company’s loan loss adequacy periodically. In addition, the regulatory agencies, as an integral part of their examination process, periodically review the Company’s allowance for loan losses. Such agencies may require the Company to recognize additions to the allowance based on judgments different from those of management.

The allowance for loan losses is comprised of several components including the specific, formula and unallocated allowance relating to loans in the loan portfolio. Our methodology for determining the allowance for loan losses consists of several key elements, which include:

The Company also maintains a separate allowance for off-balance-sheet commitments. A reserve for unfunded commitments is maintained at a level that, in the opinion of management, is adequate to absorb probable losses associated with commitments to lend funds under existing agreements, for example, the Bank’s commitment to fund advances under lines of credit. The reserve amount for unfunded commitments is determined based on our methodologies described above with respect to the formula allowance. The allowance for off-balance-sheet commitments is included in accrued interest payable and other liabilities on the consolidated balance sheet and was $146,000 and $143,000 for the periods ended June 30, 2013 and December 31, 2012, respectively.