Insurance Operations - Change in Liability for Unpaid Losses and LAE (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Insurance [Abstract]
Balance at beginning of period	$ 134,353	$ 159,222
Less: Reinsurance recoverable	(47,350)	(68,584)
Net balance at beginning of period	87,003	90,638
Incurred (recovered) related to current year	33,559	26,855
Incurred (recovered) related to prior years	27	(30)
Total incurred	33,586	26,825
Paid related to Current year	6,789	3,867
Paid related to Prior years	31,352	27,148
Total paid	38,141	31,015
Net balance at end of period	82,448	86,448
Plus: Reinsurance recoverable	42,713	64,109
Balance at end of period	$ 125,161	$ 150,557

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The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

+ References

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- Definition

Amount of payments to settle claims incurred in the current period and related claims settlement costs.

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- Definition

Amount of payments to settle claims incurred in prior periods and related claims settlement costs.

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- Definition

Amount of expense for claims incurred and costs incurred in the claim settlement process.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 40

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Financial Reporting Release (FRR)

-Number 403

-Paragraph 04

-Subparagraph b

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 13

-Subparagraph a

-Article 7

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- Definition

Amount of payments to settle insured claims and pay costs incurred in the claims settlement process.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

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Amount after valuation allowance of reinsurance recoverables for losses reported to the ceding insurer but not yet paid, amounts expected of incurred losses and settlement expenses, which have not yet been reported to the ceding insurer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 310

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6485522&loc=d3e21412-158489

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- Definition

Amount of expense for claims incurred in the current reporting period and related claims settlement costs.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 235

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-18)

-URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e575016-122915

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 18

-Article 12

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- Definition

Amount of expense for claims incurred in prior reporting periods and related claims settlement costs.

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