FAIR VALUE MEASUREMENTS (Details) (USD $)				3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Mar. 31, 2013 GSTA	Dec. 31, 2012 GSTA	Mar. 31, 2013 Recurring Amount	Dec. 31, 2012 Recurring Amount	Mar. 31, 2013 Recurring Significant Unobservable Inputs (Level 3)	Dec. 31, 2012 Recurring Significant Unobservable Inputs (Level 3)
Fair value measurements
Period over which monthly payment of agreed upon percentage of acquisition and renewal revenue is required to be paid				5 years	5 years
Period over which the projected amount would have been received by the marketing partner if the prior marketing agreement was extended				5 years	5 years
Contingent consideration						$ (2,512,000)	$ (2,693,000)	$ (2,512,000)	$ (2,693,000)
Transfers of assets between the fair value measurement levels	0	0
Re-measurement to fair value amount	$ 0		$ 0