Note 3 - Marketable Equity Securities (Details) - Approximate Gross Unrealized Losses and Fair Value of Securities in a Loss Position (Equity Securities [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Equity Securities [Member]
Note 3 - Marketable Equity Securities (Details) - Approximate Gross Unrealized Losses and Fair Value of Securities in a Loss Position [Line Items]
Equity securities – Available for sale	$ 3,961	$ 397
Equity securities – Available for sale	390	17
Totals	3,961	397
Totals	$ 390	$ 17