Federal Income Taxes (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Ordinary income (unaudited)	60.90%	53.30%	38.50%
Return of capital (unaudited)	37.70%	21.30%	61.30%
Capital gain distributions (unaudited)	1.40%	25.40%	0.20%
Total	100.00%	100.00%	100.00%