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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Fair value of convertible debt at the balance sheet date.

No definition available.

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No definition available.

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The period after a principal or interest payment is due within which a payment must be made to avoid a default pursuant to the restrictive covenants under the note agreement(s).

No definition available.

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The amount of cash and investments held at our holding company at balance sheet date.

No definition available.

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The amount of the interest payment that was deferred pursuant to the optional deferral provision under the note agreement(s).

No definition available.

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Date when the debt instrument is scheduled to be fully repaid, which may be presented in a variety of ways (year, month and year, day, month and year, quarter, etc.).

No definition available.

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The maximum number of shares of common stock, including shares underlying qualifying warrants, that the entity may be required to issue pursuant to the Alternative Payment Mechanism under the note agreement(s).

No definition available.

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The maximum number of trading days within a specified time period that the closing sale price of the entity's common stock exceeds the prevailing conversion price of the debentures by a specified percentage.

No definition available.

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The maximum ratio of total net proceeds of all issuances of qualifying securities to the aggregate principal amount of the debentures. Pursuant to the Alternative Payment Mechanism under the note agreement(s), the entity may not issue qualifying preferred stock if the total net proceeds exceed this ratio.

No definition available.

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The maximum length of time for which interest payments on the convertible debentures may be deferred without giving rise to an event of default.

No definition available.

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The minimum number of consecutive interest periods for which interest payments may be deferred pursuant to an optional deferral provision under the note agreement(s).

No definition available.

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The minimum number of trading days within a specified time period that the closing sale price of the entity's common stock exceeds the prevailing conversion price of the debentures by a specified percentage.

No definition available.

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The minimum percentage of notes held by holders, in the aggregate, that would allow such holders the right to accelerate the maturity of a given series of notes pursuant to the restrictive covenants under the note agreement(s).

No definition available.

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The minimum percentage of consolidated shareholders' equity that a subsidiary's shareholders' equity must represent to be deemed a designated subsidiary as defined by the note agreements.

No definition available.

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The modified duration of the holding company's investment portfolio, excluding cash and cash equivalents, at balance sheet date.

No definition available.

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The percentage calculated as the average closing price of the entity's common stock times the number of the entity's outstanding shares of common stock. The average price is determined over a specified period ending before the issuance of the common stock or warrants being sold, and the number of outstanding shares is determined as of the date of the entity's most recent publicly released financial statements.

No definition available.

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The ratio of the closing sale price of the entity's common stock over the prevailing conversion price of the debentures as of the redemption date.

No definition available.

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The maximum period, in business days, after payment of interest on debentures that was not deferred, in which the entity must begin reasonable commercial efforts to sell qualifying securities to unaffiliated persons pursuant to the optional deferral provision under the note agreement(s).

No definition available.

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The minimum period in which the entity must begin reasonable commercial efforts to sell qualifying securities to unaffiliated persons pursuant to the optional deferral provision under the note agreement(s).

No definition available.

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The period immediately prior to an election to convert debentures during which the average price of shares traded is determined for the purpose of calculating the conversion rate.

No definition available.

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The principal amount of notes used in the determination of the initial conversion rate, which is subject to adjustment.

No definition available.

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The percentage of the principal amount of the debentures being redeemed which would equal the redemption price under certain conditions as specified in the note agreement(s).

No definition available.

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The minimum aggregate amount of other debt that, if maturity were accelerated, would result in a default pursuant to the restrictive covenants under the note agreement(s).

No definition available.

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The minimum aggregate amount of payments due with respect to a final judgment rendered against the entity or any of its subsidiaries and which is not discharged or stayed within certain time limits that would result in a default pursuant to the restrictive covenants under the note agreement(s).

No definition available.

Name:	mtg_RestrictionOnFinalJudgments
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The amount of unrealized gains or losses on investments held at our holding company at balance sheet date.

No definition available.

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Including the current and noncurrent portions, the carrying value of convertible subordinated debt, as of the balance sheet date, initially scheduled to be repaid after one year or beyond the normal operating cycle if longer. This form of debt can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder, and places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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The price per share of the conversion feature embedded in the debt instrument.

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The ratio applied to the debt for purposes of determining the number of shares of the equity security into which the debt will be converted.

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Decrease for amounts repaid on the debt instrument for the period.

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The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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Interest rate stated in the contractual debt agreement.

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Amount of the required periodic payments applied to interest.

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Discussion of the facts and amounts pertaining to each failure to comply with an affirmative or negative covenant of a long-term debt instrument, including violating payment terms or an inability to meet certain minimum financial requirements or achieve or maintain certain financial ratios. The discussion would generally be expected to also include whether or not the failure can and will be overcome and a description of the terms of any waivers, including the amount of the waiver and the period of time covered by the waiver, and if reclassification of long-term debt to current has been made in the current balance sheet.

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Amount of subordinated debt obligations (also known as subordinated loan, subordinated bond, subordinated debenture or junior debt) which has a priority ranking after other debts in a dissolution, measured at fair value.

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The amount of cash paid for interest during the period.

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents notes payable as of the balance sheet date.

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The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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