Equity Investees - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Subsidiary, Sale of Stock [Line Items]
Net premium revenues from policies issued by equity investees	$ 66,145	$ 70,896	$ 73,450
Earnings related to equity investees	11,037	4,326	6,976
Goodwill related to equity investees	220,955	214,492	206,861
Equity Method Investments
Subsidiary, Sale of Stock [Line Items]
Goodwill related to equity investees	9,100	12,100
Direct Operations
Subsidiary, Sale of Stock [Line Items]
Net premium revenues from policies issued by equity investees	6,000	6,400	6,900
Earnings related to equity investees	$ 4,300	$ 1,700	$ 2,400

The amount of net income (loss) reported by an equity method investment of the entity.

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+ Details

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

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+ Details