INVESTMENTS (Tables)

9 Months Ended

Sep. 30, 2013

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

September 30, 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	$	6,515	$	-	$	-	$	6,515	$	-	$	-
Municipal securities	302,059		56		-		302,115		-		-
Total	$	308,574	$	56	$	-	308,630		$	-	$	-

Trading
Short-term:
Auction rate securities							6,998
Long-term:
Auction rate securities							9,725
Total							$	325,353

December 31, 2012	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:
U.S. Treasuries	$	16,040	$	-	$	-	$	16,040	$	-	$	-
Certificates of deposit	2,201		-		-		2,201		-		-
Municipal securities	77,038		-		11		77,027		11		-
Available-for-sale
Long-term:
Auction rate securities	3,310		2,483		-		5,793		-		-
Total	$	98,589	$	2,483	$	11	101,061		$	11	$	-

Trading
Short-term:
Auction rate securities							1,763
Long-term:
Auction rate securities							15,600
Total							$	118,424

Schedule of net gain recognized through earnings on trading securities

	Three-Months Ended September 30,				Nine-Months Ended September 30,
	2013		2012		2013		2012
Gain on transfer from available-for-sale to trading	$	-	$	-	$	-	$	-
Gain on trading securities sold	140		27		140		1,100
Gain on trading securities held	71		80		468		579
Gain on trading securites	$	211	$	107	$	608	$	1,679

Summarizes the underlying contractual maturities of the Company's investments

	September 30, 2013				December 31, 2012

	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Less than 1 year:
U.S. Treasuries	$	-	$	-	$	16,040	$	16,040
Certificates of deposit	6,515		6,515		2,201		2,201
Municipal securities	302,059		302,115		77,038		77,027
Due 11 - 20 years:
Auction rate securities	10,861		10,861		10,748		10,748
Due 21 - 30 years:
Auction rate securities	5,862		5,862		9,925		12,408
Total	$	325,297	$	325,353	$	115,952	$	118,424

- Definition

Tabular disclosure of trading securities (and certain trading assets) which consist of all investments in certain debt and equity securities (and other assets) that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for which an entity has elected the fair value option. Trading generally reflects active and frequent buying and selling, and trading securities are generally used with the objective of generating profits on short-term differences in price, but this category of investments may also include items which are not intended to be sold in the near term or for which the fair value option has been elected.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 21

-Subparagraph e

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

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-Subparagraph a(1), b(1)-b(5)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 13

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Trading Securities

-URI http://asc.fasb.org/extlink&oid=6526789

Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

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Reference 10: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

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Reference 11: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 03-1

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details