Earnings per Share and Unit EPS and Unit Phantom (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Weighted Average Limited Partnership Units Outstanding, Basic	154,170	154,170	157,950
Limited Partners' Capital Account, Units Outstanding	154,000	154,000