Repurchase Agreements - Narrative (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Repurchase Agreements [Abstract]
Repurchase agreements	$ 77,234,249	$ 109,963,995
Repurchase Agreements Weighted Average Borrowing Rates	0.61%	0.36%
Fair Value of securities pledged, including accrued interest receivable	$ 81,464,000	$ 116,431,000
Repurchase Agreement Margin	$ 0	$ 300,000