Significant Accounting Policies Investments (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Significant Accounting Policies [Abstract]
Available-for-sale Securities, Fair Value Disclosure	$ 0	$ 20,000,000
Proceeds from Maturities, Prepayments and Calls of Other Investments	21,100,000	32,350,000	38,125,000
Loss on sale of investments	200,000	0	0
Held-to-maturity Securities	$ 1,400,000	$ 1,300,000