Investments (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net change in unrealized gains (losses) from other trading account assets	$ 800,000	$ (400,000)	$ (4,100,000)
Net investment income	217,883,000	277,651,000	306,010,000
Gross unrealized losses related to high or highest quality securities	20,400,000	1,600,000
Gross unrealized losses related to other than high or highest quality securities	1,500,000	300,000
Gross unrealized losses representing declines in value of greater than 20%	200,000	0
Gross unrealized losses in a continuous loss position for less than six months	200,000	0
Twelve months or more Unrealized Losses	1,621,000	620,000
Fixed Maturities [Member]
Assets Deposited With Governmental Authorities	$ 8,000,000	$ 5,000,000