Note 6 - Accrued Liabilities (Details Textual) - Zheng Ge Electrical Company Ltd [Member]	12 Months Ended
	Jan. 31, 2017 USD ($)
Accounts Receivable, Write-offs	$ 100,000
Accounts Payable, Write-offs	600,000
Uninvoiced Materials and Services Received, Write-offs	$ 300,000