Reinsurance (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Premium Written :
Direct	$ 291,829	$ 271,219	$ 249,071
Assumed	98,013	83,662	71,902
Ceded	(57,353)	(51,005)	(39,332)
Premiums Written, Net, Property and Casualty	332,489	303,876	281,641
Premium Earned:
Direct	284,065	270,520	239,282
Assumed	89,784	79,560	75,461
Ceded	(54,413)	(57,039)	(36,472)
Premiums Earned, Net, Property and Casualty	319,436	293,041	278,271
Reinsurance recoveries	$ 29,014	$ 32,941	$ 22,172

Premiums assumed and earned for all property and casualty insurance assumed from other insurers as a result of reinsurance arrangements.

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