GEOGRAPHIC AND SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2013 item	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
GEOGRAPHIC AND SEGMENT INFORMATION
Number of operating segments	1
Geographic Information
Net revenues to unaffiliated customers	$ 1,943	$ 39,322	$ 42,316	$ 1,425	$ 448
Net revenues	1,943	39,322	42,316	1,425	448
Deferred revenue	508		257
Long-lived assets	1,120		1,358
Maximum
Geographic Information
Percentage of assets in foreign countries	10.00%
Percentage of net income from foreign countries	10.00%
U.S.
Geographic Information
Net revenues to unaffiliated customers	1,847	39,260
Net revenues	1,847	39,260
Long-lived assets	1,036		1,309
Canada
Geographic Information
Net revenues to unaffiliated customers	96	62
Inter-geographic revenues	204	181
Net revenues	300	243
Long-lived assets	84		49
Germany
Geographic Information
Deferred revenue	373
Eliminations
Geographic Information
Inter-geographic revenues	(204)	(181)
Net revenues	$ (204)	$ (181)