Qualified Affordable Housing (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Investments in Affordable Housing Projects [Abstract]
Amortization Method Qualified Affordable Housing Project Investments	$ 15,000,000	$ 18,600,000
Qualified Affordable Housing Project Investments, Commitment	0	0
Amortization Method Qualified Affordable Housing Project Investments, Amortization	3,600,000	4,100,000	$ 4,100,000
Affordable Housing Tax Credits and Other Tax Benefits, Amount	$ 4,000,000	$ 4,300,000	$ 4,300,000