Underwriting, Acquisition And Insurance Expenses (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2011
Expense to write-off	$ 4.0
Reinsurance recoverable	0.9
Adjustment for doubtful accounts	$ 0.9

Reflects a reduction in bad debt expense attributable to collections of loans and lease receivables which had previously been fully or partially charged off as bad debts.

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Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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