Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Taxes [Abstract]
Income tax benefit	$ (881,000)	$ 1,181,000	$ 1,395,000	$ 1,244,000
Unrealized gains on available-for-sale securities, amount of tax recorded in other comprehensive income			$ 2,500,000	$ 10,000,000