MARKETABLE SECURITIES

3 Months Ended

Mar. 31, 2014

MARKETABLE SECURITIES

2.    MARKETABLE SECURITIES

(in thousands)	March 31, 2014
	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Municipal bonds	$	36,586		117		—	$	36,703
Corporate bonds		37,219		43		(29)		37,233
Certificates of deposit		2,697		2		(1)		2,698
	$	76,502		162		(30)	$	76,634
(in thousands)	December 31, 2013
	Amortized Cost		Unrealized Gains		Unrealized Losses		Fair Value
Municipal bonds	$	41,545		75		(20)	$	41,600
Corporate bonds		31,868		52		(4)		31,916
Certificates of deposit		2,948		1		(4)		2,945
	$	76,361		128		(28)	$	76,461

The Company considers debt securities with maturities of three months or less from the purchase date to be cash equivalents. Interest is recorded when earned. All of the Company’s investments are classified as available-for-sale and are carried at fair value with unrealized gains and losses recorded as a component of accumulated other comprehensive income, net of related income taxes.

As of March 31, 2014, remaining maturities of marketable debt securities ranged from April 2014 to July 2016, with a weighted-average remaining maturity of approximately 13 months.