CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Statement Of Financial Position [Abstract]
Amortized cost of investments	$ 122,244	$ 119,119
Allowance for premiums and fees receivable	405	392
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000us-gaap_PreferredStockSharesAuthorized	10,000,000us-gaap_PreferredStockSharesAuthorized
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	75,000,000us-gaap_CommonStockSharesAuthorized	75,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	41,016,000us-gaap_CommonStockSharesIssued	41,016,000us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	41,016,000us-gaap_CommonStockSharesOutstanding	41,016,000us-gaap_CommonStockSharesOutstanding
Accumulated Other Comprehensive Income, tax	$ 1,269	$ 923

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The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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