Segment Reporting (Details) - Schedule of Segment Reporting Information Assets (USD $) In Thousands, unless otherwise specified	Jul. 31, 2014	Jan. 31, 2014
Segment Reporting (Details) - Schedule of Segment Reporting Information Assets [Line Items]
Assets	$ 469,520	$ 427,868
Alternative Energy Segment [Member]
Segment Reporting (Details) - Schedule of Segment Reporting Information Assets [Line Items]
Assets	413,883	356,589
Real Estate Segment [Member]
Segment Reporting (Details) - Schedule of Segment Reporting Information Assets [Line Items]
Assets	4,141	4,722
Corporate and Other Segment [Member]
Segment Reporting (Details) - Schedule of Segment Reporting Information Assets [Line Items]
Assets	$ 51,496	$ 66,557

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.18)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 7

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 18

-Article 5

Name:	us-gaap_Assets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant