Portfolio loans were as follows (dollars in thousands):

 

Activity in the allowance for loan losses by portfolio segment was as follows (dollars in thousands):

 

 

The following table presents the balance in the allowance for loan losses and the recorded investment in loans by portfolio segment and based on impairment method (dollars in thousands):

 

March 31, 2012:

 

December 31, 2011:

 

The following table presents loans individually evaluated for impairment by class of loans as of March 31, 2012 (dollars in thousands):

 

 

The following table presents loans individually evaluated for impairment by class of loans as of December 31, 2011 (dollars in thousands):

 

 

The following table presents information regarding average balances of impaired loans and interest recognized on impaired loans for the three month periods ended March 31, 2012 and 2011 (dollars in thousands):

 

 

Nonaccrual loans include both smaller balance homogeneous loans that are collectively evaluated for impairment and individually classified impaired loans.

 

The following table presents the recorded investment in nonaccrual and loans past due over 90 days still on accrual by class of loans as of March 31, 2012:

 

 

The following table presents the recorded investment in nonaccrual and loans past due over 90 days still on accrual by class of loans as of December 31, 2011:

 

 

The following table presents the aging of the recorded investment in past due loans as of March 31, 2012 by class of loans (dollars in thousands):

 

 

The following table presents the aging of the recorded investment in past due loans as of December 31, 2011 by class of loans (dollars in thousands):

 

 

The Company had allocated $9,072,000 and $6,905,000 of specific reserves to customers whose loan terms have been modified in troubled debt restructurings ("TDRs") as of March 31, 2012 and December 31, 2011, respectively.  These loans involved the restructuring of terms to allow customers to mitigate the risk of foreclosure by meeting a lower loan payment requirement based upon their current cash flow.  These may also include loans that renewed at existing contractual rates, but below market rates for comparable credit.  The Company has been active at utilizing these programs and working with its customers to reduce the risk of foreclosure.  For commercial loans, these modifications typically include an interest only period and, in some cases, a lowering of the interest rate on the loan.  In some cases, the modification will include separating the note into two notes with the first note structured to be supported by current cash flows and collateral, and the second note made for the remaining unsecured debt.  The second note is charged off immediately and collected only after the first note is paid in full.  This modification type is commonly referred to as an A-B note structure.  For consumer mortgage loans, the restructuring typically includes a lowering of the interest rate to provide payment and cash flow relief.  For each restructuring, a comprehensive credit underwriting analysis of the borrower's financial condition and prospects of repayment under the revised terms is performed to assess whether the structure can be successful and that cash flows will be sufficient to support the restructured debt.  An analysis is also performed to determine whether the restructured loan should be on accrual status.  Generally if the loan is on accrual at the time of restructure, it will remain on accrual after the restructuring.  In some cases, a nonaccrual loan may be placed on accrual at restructuring if the loan's actual payment history demonstrates it would have cash flowed under the restructured terms.  After six consecutive payments under the restructured terms, a nonaccrual restructured loan is reviewed for possible upgrade to accruing status.

Typically, once a loan is identified as a TDR, it will retain that designation until it is paid off, since the restructured loans generally are not at market rates at the time of restructuring.  An exception to this would be a loan that is modified under an A-B note structure.  If the remaining "A" note is at a market rate at the time of restructuring (taking into account the borrower's credit risk and prevailing market conditions), the loan can be removed from TDR designation in a subsequent calendar year after six months of performance in accordance with the new terms.  The market rate relative to the borrower's credit risk is determined through analysis of market pricing information gathered from peers and use of a loan pricing model.  The general objective of the model is to achieve a consistent return on equity from one credit to the next, taking into consideration their differences in credit risk.  In the model, credits with higher risk receive a higher potential loss allocation, and therefore require a higher interest rate to achieve the target return on equity.  In general, when a loan is removed from TDR status it would no longer be considered impaired.  As a result, allowance allocations for loans removed from TDR status would be based on the historical based allocation for the applicable loan grade and loan class.  During the three months ended March 31, 2012 and throughout 2011, no loans were removed from TDR status.  Given the nature of the TDRs outstanding at March 31, 2012, it is unlikely that any such loans will be removed from TDR status in 2012.

As with other impaired loans, an allowance for loan loss is estimated for each TDR based on the most likely source of repayment for each loan.  For impaired commercial real estate loans that are collateral dependent, the allowance is computed based on the fair value of the underlying collateral.  For impaired commercial loans where repayment is expected from cash flows from business operations, the allowance is computed based on a discounted cash flow computation.  Certain groups of TDRs, such as residential mortgages, have common characteristics and for them the allowance is computed based on a discounted cash flow computation on the change in weighted rate for the pool.  The allowance allocations for commercial TDRs where we have reduced the contractual interest rate are computed by measuring cash flows using the new payment terms discounted at the original contractual rate.

The following table presents information regarding troubled debt restructurings as of March 31, 2012 and December 31, 2011 (dollars in thousands):

 

 

The following table presents information regarding troubled debt restructurings executed during the three month periods ended March 31, 2012 and 2011 (dollars in thousands):

 

According to the accounting standards, not all loan modifications are TDRs.  TDRs are modifications or renewals where the Company has granted a concession to a borrower in financial distress.  The Company reviews all modifications and renewals for determination of TDR status.  In some situations a borrower may be experiencing financial distress, but the Company does not provide a concession.  These modifications are not considered TDRs.  In other cases, the Company might provide a concession, such as a reduction in interest rate, but the borrower is not experiencing financial distress.  This could be the case if the Company is matching a competitor's interest rate.  These modifications would also not be considered TDRs.  Finally, any renewals at existing terms for borrowers not experiencing financial distress would not be considered TDRs.  The following table presents information regarding modifications and renewals executed during the three month periods ended March 31, 2012 and March 31, 2011 that are not considered TDRs (dollars in thousands):

The table below presents by class, information regarding troubled debt restructured loans which had payment defaults during the three month periods ended March 31, 2012 and 2011 (dollars in thousands). Included are loans that became delinquent more than 90 days past due or transferred to nonaccrual within 12 months of restructuring.

Credit Quality Indicators: The Company categorizes loans into risk categories based on relevant information about the ability of the borrowers to service their debt such as: current financial information, historical payment experience, credit documentation, public information and current economic trends, among other factors. The Company analyzes commercial loans individually and classifies these relationships by credit risk grading. The Company uses an eight point grading system, with grades 5 through 8 being considered classified, or watch, credits. All commercial loans are assigned a grade at origination, at each renewal or any amendment. When a credit is first downgraded to a watch credit (either through renewal, amendment, loan officer identification or the loan review process), an Administrative Loan Review ("ALR") is generated by credit and the loan officer. All watch credits have an ALR completed monthly which analyzes the collateral position and cash flow of the borrower and its guarantors. The loan officer is required to complete both a short term and long term plan to rehabilitate or exit the credit and to provide monthly comments on the progress to these plans. Management meets quarterly with loan officers to discuss each of these credits in detail and to help attempt to formulate solutions where progress has stalled. When necessary, the loan officer proposes changes to the assigned loan grade as part of the ALR. Additionally, Loan Review reviews all loan grades upon origination, renewal or amendment and again as loans are selected through the loan review process. The credit will stay on the ALR until either its grade has improved to a 4 or better or the credit relationship is at a zero balance. The Company uses the following definitions for the risk grades:

 

1. Excellent - Borrowings supported by extremely strong financial condition or secured by the Bank's own deposits. Minimal risk to the Bank and the probability of serious rapid financial deterioration is extremely small.

 

2. Above Average - Borrowings supported by sound financial statements that indicate the ability to repay or borrowings secured (and margined properly) with marketable securities. Nominal risk to the Bank and probability of serious financial deterioration is highly unlikely. The overall quality of these credits is very high.

 

3. Good Quality - Average borrowings supported by satisfactory asset quality and liquidity, good debt capacity coverage, and good management in all critical positions. Loans are secured by acceptable collateral with adequate margins. There is a slight risk of deterioration if adverse market conditions prevail.

 

4. Acceptable Risk - This is an acceptable risk to the Bank, which may be slightly below average quality. The borrower has limited financial strength with considerable leverage. There is some probability of deterioration if adverse market conditions prevail. These credits should be monitored closely by the Relationship Manager.

 

5. Marginally Acceptable - Loans are of marginal quality with above normal risk to the Bank. The borrower shows acceptable asset quality but very little liquidity with high leverage. There is inconsistent earning performance without the ability to sustain adverse market conditions. The primary source of repayment is questionable, but the secondary source of repayment still remains an option. Very close attention by the Relationship Manager and management is needed.

 

6. Substandard - Loans are inadequately protected by the net worth and paying capacity of the borrower or the collateral pledged. The primary and secondary sources of repayment are questionable. Heavy debt condition may be evident and volume and earnings deterioration may be underway. It is possible that the Bank will sustain some loss if the deficiencies are not immediately addressed and corrected.

 

7. Doubtful - Borrowings supported by weak or no financial statements. The ability to repay the entire loan is questionable. Loans in this category are normally characterized with less than adequate collateral, insolvent, or extremely weak financial condition. A loan classified doubtful has all the weaknesses inherent in one classified substandard with the added characteristic that the weaknesses makes collection or liquidation in full highly questionable. The possibility of loss is extremely high, however, activity may be underway to minimize the loss or maximize the recovery.

 

8. Loss - Loan are considered uncollectible and of little or no value as a bank asset.

 

As of March 31, 2012, the risk grade category of commercial loans by class of loans was as follows (dollars in thousands):