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Insurance Activity - Summary of Losses and Loss Adjustment Reserve Activity (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014
Insurance [Abstract]
Balance at beginning of period	$ 44,314	$ 82,524	$ 23,662
Incurred - prior periods	3,989	(6,159)
Paid or terminated - prior periods	(24,641)	(32,051)
Total	$ 23,662	$ 44,314

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- Definition

Amount of payments made in the reporting period to settle claims incurred in prior periods and related claims settlement costs.

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Amount of provision in the period for claims incurred in prior reporting periods and related claims settlement costs.

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Liability as of the balance sheet date for amounts representing estimated cost of settling unpaid claims under the terms of the underlying insurance policies, less estimated reinsurance recoveries on such claims. This includes an estimate for claims which have been incurred but not reported. Claim adjustment expenses represent the costs estimated to be incurred in the settlement of unpaid claims.

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The amount of the other adjustment made to the claims reserves during the period.

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