Schedule 5 Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 5,777	$ 3,622	$ 3,668
Provision expense	1,448	2,807	1,584
Amounts written off and other	(2,140)	(652)	(1,630)
Balance at end of year	5,085	5,777	3,622
Reserve for potentially uncollectible amounts
Balance at beginning of year	1,500hcc_ReserveForUncollectibleReinsurance	1,500hcc_ReserveForUncollectibleReinsurance	1,875hcc_ReserveForUncollectibleReinsurance
Provision recovery	0hcc_Provisionrecovery	0hcc_Provisionrecovery	(375)hcc_Provisionrecovery
Balance at end of year	$ 1,500hcc_ReserveForUncollectibleReinsurance	$ 1,500hcc_ReserveForUncollectibleReinsurance	$ 1,500hcc_ReserveForUncollectibleReinsurance

Provision recovery

No definition available.

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- Details

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- Definition

Reserve for uncollectible reinsurance.

+ References

No definition available.

+ Details

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

+ Details

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- Definition

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

+ References

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