Commitments and Contingencies (Details) (Car mark usage agreement related to intended purchase of certain railcars [Member], USD $)	Apr. 30, 2014
Car mark usage agreement related to intended purchase of certain railcars [Member]
Commitments and Contingencies [Line Items]
Liability accrued	$ 95,000

Amount of loss contingency liability.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

Name:	us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant