Investments (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013		Dec. 31, 2012
Net change in unrealized gains (losses) from other trading account assets	$ (900,000)	$ 800,000		$ (400,000)
Net investment income	164,011,000	217,883,000		277,651,000
Gross unrealized losses related to high or highest quality securities	4,000,000	20,400,000
Gross unrealized losses related to other than high or highest quality securities	3,100,000	1,500,000
Twelve months or more Unrealized Losses	1,152,000	1,621,000	[1]
Non Income Producing Assets, Fixed Maturities	1,000,000
Fixed Maturities [Member]
Assets Deposited With Governmental Authorities	$ 7,000,000	$ 8,000,000

[1] Prior period’s amounts are presented on a basis consistent with the current period presentation.