Note 4 - Stockholders' Equity (Details Textual) - USD ($)			12 Months Ended
	Feb. 18, 2015	Jan. 22, 2015	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Class A Common Stock to Class B Common Stock, Cash or Stock Dividends Payout Ratio			120.00%
Proceeds from Issuance of Common Stock				$ 8,365,000	$ 37,046,000
Common Class A [Member]
Stock Issued During Period, Shares, New Issues	450,000	2,000,000		450,000	2,000,000
Proceeds from Issuance of Common Stock	$ 8,400,000	$ 37,000,000		$ 8,400,000	$ 37,000,000