Investments (Narrative) (Details) (USD $)	6 Months Ended		12 Months Ended
	Jun. 30, 2014 security	Jun. 30, 2013	Dec. 31, 2013
Schedule of Investments [Line Items]
Credit-related net investment impairment losses	$ 0	$ 0	$ 0
Regional community bank stocks, percent of average trading volumes (less than 0.1%)	0.20%
Number Of Pooled Trust Preferred Securities	5
Pooled trust preferred securities, book value	3,000,000
Pooled trust preferred securities, estimated fair value	1,800,000
Annual prepayment rate	1.00%		1.00%
Annual prepayments maturity	100.00%		100.00%
Additional basis points	1.50%		1.50%
Carrying value of securities pledged	264,000,000		278,000,000
Held-to-maturity Securities, Transferred Security, at Carrying Value	83,400,000
Held-to-maturity Securities, Transferred Security, Unrealized Gain (Loss)	$ 100,000
Maximum [Member]
Schedule of Investments [Line Items]
Equity ownership positions in the community bank holding companies	4.00%