Reinsurance (Schedule of Reinsurance Ceded and Recoveries) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Premium Written :
Direct	$ 473,233us-gaap_DirectPremiumsWritten	$ 458,020us-gaap_DirectPremiumsWritten	$ 385,624us-gaap_DirectPremiumsWritten
Assumed	(15)us-gaap_AssumedPremiumsWritten	2,007us-gaap_AssumedPremiumsWritten	4,218us-gaap_AssumedPremiumsWritten
Ceded premiums written	(148,866)us-gaap_CededPremiumsWritten	(99,262)us-gaap_CededPremiumsWritten	(57,353)us-gaap_CededPremiumsWritten
Net premiums written	324,352us-gaap_PremiumsWrittenNet	360,765us-gaap_PremiumsWrittenNet	332,489us-gaap_PremiumsWrittenNet
Premium Earned:
Direct	461,367us-gaap_DirectPremiumsEarned	434,022us-gaap_DirectPremiumsEarned	369,735us-gaap_DirectPremiumsEarned
Assumed	327us-gaap_AssumedPremiumsEarned	3,204us-gaap_AssumedPremiumsEarned	4,114us-gaap_AssumedPremiumsEarned
Ceded	(140,477)us-gaap_CededPremiumsEarned	(76,685)us-gaap_CededPremiumsEarned	(54,413)us-gaap_CededPremiumsEarned
Premiums Earned, Net, Property and Casualty	321,217	360,541	319,436
Reinsurance recoveries	$ 99,911	$ 45,456	$ 29,014

Amount of earned premiums assumed from other entities.

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Amount of written premiums assumed from other entities.

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

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Amount, after premiums ceded to other entities and premiums assumed by the entity, of property and casualty premiums earned.

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Amount of recovery (expense) related to provision for policy benefits and costs incurred for policies assumed and ceded.

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