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Summary of significant accounting policies (Policies)

12 Months Ended

Dec. 31, 2011

Summary of significant accounting policies [Abstract]

In accordance with fair value guidance, we applied the following fair value hierarchy in order to measure fair value for assets and liabilities:

Level 1 – Quoted prices for identical instruments in active markets that we have the ability to access. Financial assets utilizing Level 1 inputs primarily include certain U.S. Treasury securities and obligations of U.S. government corporations and agencies and Australian government and semi government securities.

Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and inputs, other than quoted prices, that are observable in the marketplace for the financial instrument. The observable inputs are used in valuation models to calculate the fair value of the financial instruments. Financial assets utilizing Level 2 inputs primarily include certain municipal and corporate bonds.

Level 3 – Valuations derived from valuation techniques in which one or more significant inputs or value drivers are unobservable. Level 3 inputs reflect our own assumptions about the assumptions a market participant would use in pricing an asset or liability. Financial assets utilizing Level 3 inputs include certain state and auction rate (backed by student loans) securities. Non-financial assets which utilize Level 3 inputs include real estate acquired through claim settlement.

To determine the fair value of securities available-for-sale in Level 1 and Level 2 of the fair value hierarchy, independent pricing sources have been utilized. One price is provided per security based on observable market data. To ensure securities are appropriately classified in the fair value hierarchy, we review the pricing techniques and methodologies of the independent pricing sources and believe that their policies adequately consider market activity, either based on specific transactions for the issue valued or based on modeling of securities with similar credit quality, duration, yield and structure that were recently traded. A variety of inputs are utilized by the independent pricing sources including benchmark yields, reported trades, non-binding broker/dealer quotes, issuer spreads, two sided markets, benchmark securities, bids, offers and reference data including data published in market research publications. Inputs may be weighted differently for any security, and not all inputs are used for each security evaluation. Market indicators, industry and economic events are also considered. This information is evaluated using a multidimensional pricing model. Quality controls are performed by the independent pricing sources throughout this process, which include reviewing tolerance reports, trading information and data changes, and directional moves compared to market moves. This model combines all inputs to arrive at a value assigned to each security. In addition, on a quarterly basis, we perform quality controls over values received from the pricing sources which include reviewing tolerance reports, trading information and data changes, and directional moves compared to market moves. We have not made any adjustments to the prices obtained from the independent pricing sources.

Assets classified as Level 3 are as follows:

Securities available-for-sale classified in Level 3 are not readily marketable and are valued using internally developed models based on the present value of expected cash flows. Our Level 3 securities primarily consist of auction rate securities as observable inputs or value drivers are unavailable due to events described in Note 6 – “Investments.” Due to limited market information, we utilized a discounted cash flow (“DCF”) model to derive an estimate of fair value of these assets at December 31, 2011 and 2010. The assumptions used in preparing the DCF model included estimates with respect to the amount and timing of future interest and principal payments, the probability of full repayment of the principal considering the credit quality and guarantees in place, and the rate of return required by investors to own such securities given the current liquidity risk associated with them. The DCF model for the auction rate securities is based on the following key assumptions:

Nominal credit risk as substantially all of the underlying collateral of these securities is ultimately guaranteed by the United States Department of Education;

Liquidity by December 31, 2012 through December 31, 2014;

Continued receipt of contractual interest; and

Discount rates ranging from 2.30% to 4.30%, which include a spread for liquidity risk.

Real estate acquired through claim settlement is fair valued at the lower of our acquisition cost or a percentage of appraised value. The percentage applied to appraised value is based upon our historical sales experience adjusted for current trends.

Investments

Our entire investment portfolio is classified as available-for-sale and is reported at fair value. The related unrealized gains or losses are, after considering the related tax expense or benefit, recognized as a component of accumulated other comprehensive income in shareholders' equity. Realized investment gains and losses are reported in income based upon specific identification of securities sold. (See Note 6 – “Investments.”)

In April 2009, new accounting guidance regarding the recognition and presentation of other-than-temporary impairments was issued. This guidance was effective beginning with the quarter ending June 30, 2009. The guidance required us to separate an other-than-temporary impairment (“OTTI”) of a debt security into two components when there are credit related losses associated with the impaired debt security; we assert that we do not have the intent to sell the security, and it is more likely than not that we will not be required to sell the security before recovery of our cost basis. Under this guidance the amount of the OTTI related to a credit loss is recognized in earnings, and the amount of the OTTI related to other factors (such as changes in interest rates or market conditions) is recorded as a component of other comprehensive income (loss). If we determine it is more likely than not that we will have to sell a debt security prior to the anticipated recovery, the decline in fair value below amortized cost is recognized as an OTTI in earnings. In periods after recognition of an OTTI on debt securities, we account for such securities as if they had been purchased on the measurement date of the OTTI at an amortized cost basis equal to the previous amortized cost basis less the OTTI recognized in earnings. For debt securities for which OTTI were recognized in earnings, the difference between the new amortized cost basis and the cash flows expected to be collected will be accreted into net investment income.

Each quarter we perform reviews of our investments in order to determine whether declines in fair value below amortized cost were considered other-than-temporary in accordance with applicable guidance. In evaluating whether a decline in fair value is other-than-temporary, we consider several factors including, but not limited to:

our intent to sell the security or whether it is more likely than not that we will be required to sell the security before recovery;

extent and duration of the decline;

failure of the issuer to make scheduled interest or principal payments;

change in rating below investment grade; and

adverse conditions specifically related to the security, an industry, or a geographic area.

Under the current guidance a debt security impairment is deemed other than temporary if (1) we either intend to sell the security, or it is more likely than not that we will be required to sell the security before recovery or (2) we do not expect to collect cash flows sufficient to recover the amortized cost basis of the security.

Home office and equipment

Home office and equipment is carried at cost net of depreciation. For financial statement reporting purposes, depreciation is determined on a straight-line basis for the home office, equipment and data processing hardware over estimated lives of 45, 5 and 3 years, respectively. For income tax purposes, we use accelerated depreciation methods.

Home office and equipment is shown net of accumulated depreciation of $65.2 million, $62.9 million and $60.1 million at December 31, 2011, 2010 and 2009, respectively. Depreciation expense for the years ended December 31, 2011, 2010 and 2009 was $2.3 million, $2.9 million and $4.3 million, respectively.

Deferred insurance policy acquisition costs

Costs associated with the acquisition of mortgage insurance business, consisting of employee compensation and other policy issuance and underwriting expenses, are initially deferred and reported as deferred insurance policy acquisition costs ("DAC"). For each underwriting year of business, these costs are amortized to income in proportion to estimated gross profits over the estimated life of the policies. We utilize anticipated investment income in our calculation. This includes accruing interest on the unamortized balance of DAC. The estimates for each underwriting year are reviewed quarterly and updated when necessary to reflect actual experience and any changes to key variables such as persistency or loss development. If a premium deficiency exists, we reduce the related DAC by the amount of the deficiency or to zero through a charge to current period earnings. If the deficiency is more than the related DAC balance, we then establish a premium deficiency reserve equal to the excess, by means of a charge to current period earnings.

Loss reserves

Reserves are established for reported insurance losses and loss adjustment expenses based on when we receive notices of default on insured mortgage loans. We define a default as an insured loan with a mortgage payment that is 45 days or more past due. Reserves are also established for estimated losses incurred on notices of default not yet reported to us. Even though the accounting standard, ASC 944, regarding accounting and reporting by insurance entities specifically excludes mortgage insurance from its guidance relating to loss reserves, we establish loss reserves using the general principles contained in the insurance standard. However, consistent with industry standards for mortgage insurers, we do not establish loss reserves for future claims on insured loans which are not currently in default. Loss reserves are established by estimating the number of loans in our inventory of delinquent loans that will result in a claim payment, which is referred to as the claim rate, and further estimating the amount of the claim payment, which is referred to as claim severity. Our loss estimates are established based upon historical experience, including rescission and loan modification activity. Adjustments to reserve estimates are reflected in the financial statements in the years in which the adjustments are made. The liability for reinsurance assumed is based on information provided by the ceding companies.

The incurred but not reported ("IBNR") reserves result from defaults occurring prior to the close of an accounting period, but which have not been reported to us. Consistent with reserves for reported defaults, IBNR reserves are established using estimated claim rates and claim amounts for the estimated number of defaults not reported.

Reserves also provide for the estimated costs of settling claims, including legal and other expenses and general expenses of administering the claims settlement process. (See Note 9 – “Loss reserves.”)

Premium deficiency reserves

Premium deficiency reserve

After our loss reserves are initially established, we perform premium deficiency tests using our best estimate assumptions as of the testing date. Premium deficiency reserves are established, if necessary, when the present value of expected future losses and expenses exceeds the present value of expected future premium and already established reserves. The discount rate used in the calculation of the premium deficiency reserve was based upon our pre-tax investment yield at year-end. Products are grouped for premium deficiency purposes based on similarities in the way the products are acquired, serviced and measured for profitability.

Calculations of premium deficiency reserves require the use of significant judgments and estimates to determine the present value of future premium and present value of expected losses and expenses on our business. The present value of future premium relies on, among other factors, assumptions about persistency and repayment patterns on underlying loans. The present value of expected losses and expenses depends on assumptions relating to severity of claims and claim rates on current defaults, and expected defaults in future periods. These assumptions also include an estimate of expected rescission activity. Assumptions used in calculating the deficiency reserves can be affected by volatility in the current housing and mortgage lending industries and these effects could be material. To the extent premium patterns and actual loss experience differ from the assumptions used in calculating the premium deficiency reserves, the differences between the actual results and our estimate will affect future period earnings. (See Note 10 - “Premium deficiency reserve.”)

Revenue recognition

We write policies which are guaranteed renewable contracts at the insured's option on a single, annual or monthly premium basis. We have no ability to reunderwrite or reprice these contracts. Premiums written on a single premium basis and an annual premium basis are initially deferred as unearned premium reserve and earned over the policy term. Premiums written on policies covering more than one year are amortized over the policy life in accordance with the expiration of risk which is the anticipated claim payment pattern based on historical experience. Premiums written on annual policies are earned on a monthly pro rata basis. Premiums written on monthly policies are earned as coverage is provided. When a policy is cancelled, all premium that is non-refundable is immediately earned. Any refundable premium is returned to the lender. Cancellations include rescissions and policies cancelled due to claim payment. When a policy is rescinded, all previously collected premium is returned to the lender and when a claim is paid we return any premium received since the date of default. The liability associated with our estimate of premium to be returned is accrued for separately and separate components of this liability are included in “Other liabilities” and “Premium deficiency reserves” on our consolidated balance sheet. Changes in these liabilities affect premiums written and earned and change in premium deficiency reserve, respectively. In periods prior to 2010, the liability associated with premium to be returned on claim payments is included in loss reserves and changes to this estimate affect losses incurred. This policy did not have a significant impact on premiums written and earned or losses incurred in periods prior to 2010. The actual return of premium for all periods affects premiums written and earned. Policy cancellations also lower the persistency rate which is a variable used in calculating the rate of amortization of deferred insurance policy acquisition costs.

Fee income of our non-insurance subsidiaries is earned and recognized as the services are provided and the customer is obligated to pay. Fee income consists primarily of contract underwriting and related fee-based services provided to lenders and is included in “Other revenue” on the statement of operations.

Income taxes

Federal tax law permits mortgage guaranty insurance companies to deduct from taxable income, subject to certain limitations, the amounts added to contingency loss reserves, which are recorded for regulatory purposes. Generally, the amounts so deducted must be included in taxable income in the tenth subsequent year. However, to the extent incurred losses exceed 35% of net premiums earned in a calendar year, early withdrawals may be made from the contingency reserves with regulatory approval, which would lead to amounts being included in taxable income earlier than the tenth year. The deduction is allowed only to the extent that U.S. government non-interest bearing tax and loss bonds are purchased and held in an amount equal to the tax benefit attributable to such deduction. We account for these purchases as a payment of current federal income taxes. There were no purchases of tax and loss bonds in 2009, 2010 or 2011. The last tax and loss bonds we held were redeemed in 2009.

Deferred income taxes are provided under the liability method, which recognizes the future tax effects of temporary differences between amounts reported in the financial statements and the tax bases of these items. The expected tax effects are computed at the current federal tax rate. We review the need to establish a deferred tax asset valuation allowance on a quarterly basis. We analyze several factors, among which are the severity and frequency of operating losses, our capacity for the carryback or carryforward of any losses, the expected occurrence of future income or loss and available tax planning alternatives. As discussed in Note 14 –“Income Taxes,” we have reduced our benefit from income tax through the recognition of a valuation allowance.

We provide for uncertain tax positions and the related interest and penalties based on our assessment of whether a tax benefit is more likely than not to be sustained under any examination by taxing authorities.

Benefit plans

We have a non-contributory defined benefit pension plan covering substantially all employees, as well as a supplemental executive retirement plan. Retirement benefits are based on compensation and years of service. We recognize these retirement benefit costs over the period during which employees render the service that qualifies them for benefits. Our policy is to fund pension cost as required under the Employee Retirement Income Security Act of 1974.

We offer both medical and dental benefits for retired domestic employees, their spouses and eligible dependents until the retiree reaches the age of 65. Under the plan retirees pay a premium for these benefits. We accrue the estimated costs of retiree medical and dental benefits over the period during which employees render the service that qualifies them for benefits. Historically benefits were generally funded as they were due, however beginning in 2009 some benefits have been paid from the fund. The cost to us has not been significant. (See Note 13 – “Benefit plans.”)

Reinsurance

Loss reserves and unearned premiums are reported before taking credit for amounts ceded under reinsurance treaties. Ceded loss reserves are reflected as "Reinsurance recoverable on loss reserves." Ceded unearned premiums are included in “Other assets.” Ceded losses paid are reflected as “Reinsurance recoverable on paid losses.” Ceded premiums payable are included in “Other liabilities.” We remain liable for all reinsurance ceded. (See Note 11 – “Reinsurance.”)

Foreign Currency Translation

Assets and liabilities denominated in a foreign currency are translated at the year-end exchange rates. Operating results are translated at average rates of exchange prevailing during the year. Unrealized gains and losses, net of deferred taxes, resulting from translation are included in accumulated other comprehensive income in stockholders' equity. Gains and losses resulting from transactions in a foreign currency are recorded in current period net income at the rate on the transaction date.

Share-Based Compensation

We have certain share-based compensation plans. Under the fair value method, compensation cost is measured at the grant date based on the fair value of the award and is recognized over the service period which generally corresponds to the vesting period. The fair value of awards classified as liabilities is remeasured at each reporting period until the award is settled. Awards under our plans generally vest over periods ranging from one to five years. (See Note 18 – “Share-based compensation plans.”)

Earnings per share

Our basic EPS is based on the weighted average number of common shares outstanding, which excludes participating securities with non-forfeitable rights to dividends of 1.1 million, 1.8 million and 1.9 million, respectively, for the years ended December 31, 2011, 2010 and 2009 because they were anti-dilutive due to our reported net loss. Typically, diluted EPS is based on the weighted average number of common shares outstanding plus common stock equivalents which include certain stock awards, stock options and the dilutive effect of our convertible debt. In accordance with accounting guidance, if we report a net loss from continuing operations, then our diluted EPS is computed in the same manner as the basic EPS. In addition, if any common stock equivalents are anti-dilutive they are always excluded from the calculation. The following is a reconciliation of the weighted average number of shares; however for the years ended December 31, 2011, 2010 and 2009, common stock equivalents of 55.6 million, 47.4 million and 37.6 million, respectively, were not included because they were anti-dilutive.

Cash and cash equivalents

We consider money market funds and investments with original maturities of three months or less to be cash equivalents.

Subsequent events

We have considered subsequent events through the date of this filing.