INVESTMENTS (Tables)

12 Months Ended

Dec. 31, 2013

Investments, Debt and Equity Securities [Abstract]

Scheduled maturities of investments classified as available-for-sale

Scheduled maturities of investments classified as available-for-sale as of December 31, 2013 are as follows (in thousands):

Maturity	Fair Value
Due in:
2014	$	—
2015 — 2018	853
2019 — 2023	—
2024 and thereafter	21,137
Available-for-sale investments	$	21,990

Schedule of available for sale securities reconciliation

As of December 31, 2013, the amortized cost basis and fair value of investments classified as available-for-sale were as follows (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Auction rate securities	$	23,517	$	411	$	(1,938	)	$	21,990
Available-for-sale investments	$	23,517	$	411	$	(1,938	)	$	21,990

4. INVESTMENTS — (CONTINUED)

As of December 31, 2012, the amortized cost basis and fair value of investments classified as available-for-sale were as follows (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Government-sponsored enterprise obligations	$	37	$	—	$	—		$	37
Auction rate securities	23,567		101		(2,006		)	21,662
Available-for-sale investments	$	23,604	$	101	$	(2,006	)	$	21,699

Schedule of unrealized loss on investments

The components of the Company’s investments in an unrealized loss position for more than twelve months were as follows (in thousands):

	December 31,
	2012					2013
	Aggregate Fair  Value		Gross Unrealized Losses			Aggregate Fair  Value		Gross Unrealized Losses
Government-sponsored enterprise obligations	$	37	$	—		$	—	$	—
Auction rate securities	21,119		(2,006		)	21,137		(1,938		)
Investments in an unrealized loss position	$	21,156	$	(2,006	)	$	21,137	$	(1,938	)