Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 3,813	$ 3,877	$ 4,184	[1]	$ 3,863
Other comprehensive income (loss) before reclassifications	(4,587)	763	(4,956)		778
Amounts reclassified from accumulated comprehensive income:
Realized gain/(loss) on sale of securities	(272)	(300)	(276)		(300)
Impairment expense	0	0	0		0
Reclassified amounts before tax	(272)	(300)	(276)		(300)
Tax (expense) or benefit	104	116	106		115
Total reclassifications net of tax	(168)	(184)	(170)		(185)
Net current period other comprehensive income (loss)	(4,755)	579	(5,126)		593
Ending balance	$ (942)	$ 4,456	$ (942)		$ 4,456

[1] Derived from audited consolidated financial statements