Note 3 - Marketable Equity Securities (Tables)

12 Months Ended

Dec. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Marketable Securities [Table Text Block]

	2014		2013
	(in thousands)
Available-for-sale securities
Fair market value	$	24,592	$	20,810
Cost		14,272		10,881
Unrealized gain	$	10,320	$	9,929
Trading securities
Fair market value	$	303	$	165
Cost		157		157
Unrealized gain	$	146	$	8
Total
Fair market value	$	24,895	$	20,975
Cost		14,429		11,038
Unrealized gain	$	10,466	$	9,937

Unrealized Gain (Loss) on Investments [Table Text Block]

	2014		2013
	(in thousands)
Available-for-sale securities
Gross unrealized gains	$	10,710	$	9,946
Gross unrealized losses		390		17
Net unrealized gains	$	10,320	$	9,929

Realized Gain (Loss) on Investments [Table Text Block]

	2014		2013			2012
	(in thousands)
Trading securities
Recognized gain (loss) at beginning of period	$	8	$	(26	)	$	(16	)
Recognized gain (loss) at end of period		146		8			(26	)
Change in net recognized gain (loss)	$	138	$	34		$	(10	)

Schedule of Realized Gain (Loss) [Table Text Block]

	2014		2013		2012
	(in thousands)
Realized gains
Sale proceeds	$	1,720	$	857	$	4,554
Cost of securities sold		818		290		2,183
Realized gains	$	902	$	567	$	2,371
Realized gains, net of taxes	$	546	$	346	$	1,437

Schedule of Unrealized Loss on Investments [Table Text Block]

	2014				2013
	(in thousands)
			Unrealized				Unrealized
	Fair Value		Losses		Fair Value		Losses
Equity securities – Available for sale	$	3,961	$	390	$	397	$	17
Equity securities – Trading		-		-		-		-
Totals	$	3,961	$	390	$	397	$	17