Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Industrial Assets Guaranteed Under Contract [Member]
Guarantor Obligations [Line Items]
Assets guaranteed under contract	$ 85,128	$ 25,267
Percentage of assets expected to be sold	100.00%	100.00%
Agricultural Assets Guaranteed Under Contract [Member]
Guarantor Obligations [Line Items]
Assets guaranteed under contract	$ 34,241	$ 30,509
Percentage of assets expected to be sold	100.00%	100.00%