Reinsurance (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reinsurance Disclosures [Abstract]
Assumed premiums written	$ 38us-gaap_AssumedPremiumsWritten	$ 6us-gaap_AssumedPremiumsWritten	$ 16us-gaap_AssumedPremiumsWritten
Ceded premiums written	$ 140us-gaap_CededPremiumsWritten	$ 211us-gaap_CededPremiumsWritten	$ 233us-gaap_CededPremiumsWritten

Amount of written premiums ceded to other entities.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 17

-Article 12

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 605

-Section 50

-Paragraph 1

-Subparagraph (b),(c)(2)

-URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547

Name:	us-gaap_CededPremiumsWritten
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration