Investments Net Investment Income by Major Category (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net Investment Income [Line Items]
Net investment income	$ 1,807	$ 1,089	$ 4,891	$ 2,644
Investment Income, Investment Expense	(79)	(40)	(227)	(159)
Investment Income, Net	1,728	1,049	4,664	2,485
Debt Securities [Member]
Net Investment Income [Line Items]
Net investment income	1,611	983	4,237	2,426
Equity Securities [Member]
Net Investment Income [Line Items]
Net investment income	171	93	537	174
Cash and Cash Equivalents [Member]
Net Investment Income [Line Items]
Net investment income	2	8	7	28
Partnership Interest [Member]
Net Investment Income [Line Items]
Net investment income	$ 23	$ 5	$ 110	$ 16