Investment in Affiliates, at Equity - Investment in Affiliate Exchange Rates (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity Method Investments and Joint Ventures [Abstract]
Summary of operations, weighted average rate	108.68	121.01	105.58
Balance sheet, year-end rate	116.53	120.49	119.46