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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Apr. 30, 2014

Property, plant and equipment is recorded at cost, less accumulated depreciation and amortization. We provide for depreciation and amortization using the straight-line method by charges to operations in amounts that allocate the cost of the assets over their estimated useful lives as follows:


Asset Classification	Estimated Useful Life
Buildings and improvements		10-30 years
Machinery and equipment		5-10 years
Rolling stock		5-10 years
Containers		5-12 years
Furniture and Fixtures		3-8 years

Schedule of Investments in Unconsolidated Entities

The following table summarizes our equity and cost method investments as of April 30, 2014 and 2013:


	April 30, 2014		April 30, 2013
Equity method investments	$	—	$	3,766
Cost method investments		16,752		16,486

Investments in unconsolidated entities	$	16,752	$	20,252