GOODWILL AND INTANGIBLE ASSETS (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Intangible assets with definite lives
Cost	33,629	83,803
Accumulated Amortization	(32,940)	(82,756)
Net	689	1,047
Purchase agreements
Intangible assets with definite lives
Cost	236	50,411
Accumulated Amortization	(165)	(50,293)
Net	71	118
Purchase agreements | Weighted average
Intangible assets with definite lives
Amortization Life	5 years	5 years
Technology
Intangible assets with definite lives
Cost	25,194	25,194
Accumulated Amortization	(25,158)	(25,034)
Net	36	160
Technology | Weighted average
Intangible assets with definite lives
Amortization Life	3 years	3 years
Customer lists
Intangible assets with definite lives
Cost	6,682	6,682
Accumulated Amortization	(6,106)	(6,045)
Net	576	637
Customer lists | Weighted average
Intangible assets with definite lives
Amortization Life	4 years 2 months 12 days	4 years 2 months 12 days
Other
Intangible assets with definite lives
Cost	1,517	1,516
Accumulated Amortization	(1,511)	(1,384)
Net	6	132
Other | Weighted average
Intangible assets with definite lives
Amortization Life	2 years 6 months	2 years 6 months