Note 11 - Marketable Securities

12 Months Ended

Dec. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

11. Marketable Securities:

The amortized cost and estimated fair values of securities available-for-sale and held-to-maturity at December 31, 2015 and 2014, are as follows (in thousands):

	December 31, 2015
	Amortized Cost		Gross Unrealized Gains/Losses			Estimated Fair Value
Available-for-sale:
Equity securities	$	5,511	$	398		$	5,909
Held-to-maturity:
Debt securities		1,656		(1	)		1,655
Total marketable securities	$	7,167	$	397		$	7,564

	December 31, 2014
	Amortized Cost		Gross Unrealized Gains/Losses			Estimated Fair Value
Available-for-sale:
Equity securities	$	41,462	$	46,197		$	87,659
Held-to-maturity:
Debt securities		2,576		(200	)		2,376
Total marketable securities	$	44,038	$	45,997		$	90,035

During 2015, 2014 and 2013, the Company received $76.2 million, $3.8 million and $26.4 million in proceeds from the sale or redemption of certain marketable securities, respectively. In connection with these transactions, during 2015, 2014 and 2013, the Company recognized $39.9 million of realizable gains, $0.1 million of realizable losses and $12.1 million of realizable gains, respectively.

As of December 31, 2015, the contractual maturities of debt securities classified as held-to-maturity are within the next five years. Actual maturities may differ from contractual maturities as issuers may have the right to prepay debt obligations with or without prepayment penalties.