Note 7 - Accrued Liabilities (Details Textual) (Zheng Ge Electrical Company Ltd [Member], Uninvoiced Materials and Services [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
Oct. 31, 2014	Jan. 31, 2014
Zheng Ge Electrical Company Ltd [Member] \| Uninvoiced Materials and Services [Member]
Payables and Accruals [Abstract]
Accounts Payable and Other Accrued Liabilities	$ 0.3	$ 0.3
Percent of Total Uninvoiced Materials and Services	98.00%

Sum of the carrying values as of the balance sheet date of liabilities incurred and payable to vendors for goods and services received, and other costs not separately disclosed in the balance sheet that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered.

No definition available.

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