Note 4 - Investments (Tables)

9 Months Ended

Sep. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

	September 30,		December 31,
	2014		2013
Cost basis	$	328,000	$	255,000
Unrealized gains included in accumulated other comprehensive income		1,718,000		1,001,000
Realized gains previously recognized as warrants		380,000		-
Fair value	$	2,426,000	$	1,256,000