Segment Reporting (Details) - Schedule of Segment Reporting Information Assets (USD $) In Thousands, unless otherwise specified	Apr. 30, 2014	Jan. 31, 2014
Segment Reporting (Details) - Schedule of Segment Reporting Information Assets [Line Items]
Assets	$ 446,949	$ 427,868
Alternative Energy Segment [Member]
Segment Reporting (Details) - Schedule of Segment Reporting Information Assets [Line Items]
Assets	384,034	356,589
Real Estate Segment [Member]
Segment Reporting (Details) - Schedule of Segment Reporting Information Assets [Line Items]
Assets	4,635	4,722
Corporate and Other Segment [Member]
Segment Reporting (Details) - Schedule of Segment Reporting Information Assets [Line Items]
Assets	$ 58,280	$ 66,557