GOODWILL AND INTANGIBLE ASSETS (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Intangible assets with definite lives
Cost	33,629	33,629
Accumulated Amortization	(32,983)	(32,940)
Net	646	689
Purchase agreements
Intangible assets with definite lives
Cost	236	236
Accumulated Amortization	(177)	(165)
Net	59	71
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	(25,173)	(25,158)
Net	21	36
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	(6,121)	(6,106)
Net	561	576
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	1,517
Accumulated Amortization	(1,512)	(1,511)
Net	5	6
Other | Weighted average
Intangible assets with definite lives
Amortization Life	2 years 6 months	2 years 6 months