Accumulated Other Comprehensive Income Narrative (Details) (USD $)	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Tax portion of net unrealized gain (loss) on investments	$ (500,000)	$ 400,000
Amounts reclassified from OCI to net income	$ 0