Investment Securities Available for Sale (Tables)

6 Months Ended

Jun. 30, 2015

Available-for-sale Securities [Abstract]

Available-for-sale Securities

The components of investment securities available for sale at June 30, 2015 were as follows:

	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Marketable equity securities	$	71,275	$	88,746	$	(1,747	)	$	158,274
Mutual funds invested in fixed income securities	62,399		—		(1,958		)	60,441
Marketable debt securities	124,019		109		(266		)	123,862
Total investment securities available for sale	$	257,693	$	88,855	$	(3,971	)	$	342,577

The components of investment securities available for sale at December 31, 2014 were as follows:

	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Marketable equity securities	$	63,041	$	92,244	$	(1,093	)	$	154,192
Mutual funds invested in fixed income securities	61,485		—		(1,659		)	59,826
Marketable debt securities	130,311		2,557		(843		)	132,025
Total investment securities available for sale	$	254,837	$	94,801	$	(3,595	)	$	346,043

Schedule of Maturity Dates of Fixed Income Securities

The table below summarizes the maturity dates of marketable debt securities at June 30, 2015.

Investment Type:	Market Value		Under 1 Year		1 Year up to 5 Years		More than 5 Years
U.S. Government securities	$	33,886	$	—	$	33,886	$	—
Corporate securities	51,937		6,685		44,840		412
U.S. mortgage-backed securities	6,757		839		5,751		167
Commercial mortgage-backed securities	15,758		5,084		4,614		6,060
U.S. asset-backed securities	13,393		2,080		9,852		1,461
Index-linked U.S. bonds	2,131		—		2,131		—
Total marketable debt securities by maturity dates	$	123,862	$	14,688	$	101,074	$	8,100