FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Marketable securities by major security type
Cost Basis	$ 0	$ 11,197
Fair Value	0	11,577
Gross Unrealized Gains	0	380
Gross Unrealized Losses	0	0
Auction rate floating securities
Marketable securities by major security type
Cost Basis	0	7,166
Fair Value	0	7,167
Gross Unrealized Gains	0	1
Equity securities
Marketable securities by major security type
Cost Basis	0	4,031
Fair Value	0	4,410
Gross Unrealized Gains	$ 0	$ 379