Investments in Qualified Affordable Housing Projects (Details) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Investment In Qualified Affordable Housing Projects.
Tax Credits and Benefits	$ 1,500,000	$ 1,200,000
Amortization		729,000
Share of book losses	1,200,000	729,000,000,000
Carrying value	25,600,000	27,600,000
Original Investment Value	33,800,000	33,800,000
Funding obligation	8,700,000	$ 15,500,000
Amount repaid	$ 0