INVESTMENTS (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Investment [Line Items]
Adjusted Cost	$ 983	$ 3,670
Unrealized gains	83	83
Unrealized losses	0	(506)
Net unrealized (losses) gains	83	(423)
Fair value of investment	1,066	3,247
Amount included in short-term investments	0	2,181
Auction-rate securities	1,066	1,066
Corporate equity securities
Investment [Line Items]
Adjusted Cost	0	2,687
Fair value of investment	0	2,181
Auction-rate securities
Investment [Line Items]
Adjusted Cost	983	983
Fair value of investment	$ 1,066	$ 1,066