INVESTMENTS (Tables)

6 Months Ended

Jun. 30, 2014

INVESTMENTS

Summary of investments in held-to-maturity, available-for-sale and trading securities

June 30, 2014	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses		Fair Value		Continuous Unrealized Loss Position less than 12 Months		Continuous Unrealized Loss Position greater than 12 Months
Held-to-Maturity
Short-term:
Certificates of deposit	$	6,007	$	-	$	-	$	6,007	$	-	$	-
Commercial paper	9,996		-		-		9,996		-		-
Municipal securities	431,597		76		-		431,673		-		-
Long-term:
Municipal securities	45,232		24		-		45,256		-		-
Total	$	492,832	$	100	$	-	492,932		$	-	$	-
Trading
Short-term:
Auction rate securities							6,369
Long-term:
Auction rate securities							6,450
Total							$	505,751
December 31, 2013	Amortized Cost		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses		Fair Value		Continuous Unrealized Loss Position less than 12 Months		Continuous Unrealized Loss Position greater than 12 Months
Held-to-Maturity
Short-term:
Certificates of deposit	$	22,045	$	-	$	-	$	22,045	$	-	$	-
Commercial paper	5,991		-		-		5,991		-		-
Municipal securities	367,819		48		-		367,867		-		-
Total	$	395,855	$	48	$	-	395,903		$	-	$	-
Trading
Short-term:
Auction rate securities							6,392
Long-term:
Auction rate securities							9,792
Total							$	412,087

Schedule of net gain recognized through earnings on trading securities

	Three-Months Ended June 30,				Six-Months Ended June 30,
	2014		2013		2014		2013
Gain on trading securities sold	$	138	$	-	$	269	$	-
(Loss) gain on trading securities held	(121)		392		(185)		399
Gain on trading securites	$	17	$	392	$	84	$	399

Summarizes the underlying contractual maturities of the Company's investments

	June 30, 2014				December 31, 2013
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Less than 1 year:
Certificates of deposit	$	6,007	$	6,007	$	22,045	$	22,045
Commercial paper	9,996		9,996		5,991		5,991
Municipal securities	431,597		431,673		367,819		367,867
Due 1 - 10 years:
Municipal securities	45,232		45,256		-		-
Due 11 - 20 years:
Auction rate securities	12,773		12,773		11,102		11,102
Due 21 - 30 years:
Auction rate securities	46		46		5,082		5,082
Total	$	505,651	$	505,751	$	412,039	$	412,087