Note 11 - Marketable Securities

12 Months Ended

Dec. 31, 2014

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, 2014 and 2013, are as follows (in thousands):

	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

	December 31, 2013
	Amortized Cost		Gross Unrealized Gains		Estimated Fair Value
Available-for-sale:
Equity securities	$	33,728	$	25,995	$	59,723
Held-to-maturity:
Debt securities		3,043		59		3,102
Total marketable securities	$	36,771	$	26,054	$	62,825

During 2014, 2013 and 2012, the Company received $3.8 million, $26.4 million and $0.2 million in proceeds from the sale/redemption of certain marketable securities, respectively. In connection with these transactions, during 2014, 2013 and 2012 the Company recognized (i) gross realizable gains of $0.0 million, $12.1 million and $0.0 million, respectively, and (ii) gross realizable losses of $0.1 million, $0.0 million and $0.0 million, respectively.

As of December 31, 2014, the contractual maturities of debt securities classified as held-to-maturity are as follows: after one year through five years, $1.8 million; and after five years through 10 years, $0.8 million. Actual maturities may differ from contractual maturities as issuers may have the right to prepay debt obligations with or without prepayment penalties.