Dividends Paid to Stockholders' by Insurance Companies Domiciled in the State of Arizona (Details) (Arizona, USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012
Repwest
Statutory financial information of insurance subsidiaries:
Statutory accounting practices, statutory amount available for dividend payments	$ 9.9
Dividend payments restrictions schedule, amounts paid	0
Oxford
Statutory financial information of insurance subsidiaries:
Statutory accounting practices, statutory amount available for dividend payments	13.2
Dividend payments restrictions schedule, amounts paid	$ 0

Amount available as of the balance sheet date for dividend payments after computation of statutory restrictions on capital surplus.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 60

-Paragraph 60

-Subparagraph h

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 505

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant