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NET LOSS PER COMMON SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
NET LOSS PER COMMON SHARE
Anti-dilutive shares	1,102,012
Common shares outstanding, basic:
Weighted average common shares outstanding - Basic	43,161,510	38,090,590
Common shares outstanding, diluted:
Weighted average common shares outstanding - Basic	43,161,510	38,090,590
Weighted average common shares outstanding, diluted	43,161,510	38,090,590
Reconciliation of the net loss attributable to GS&T and the net loss attributable to GS&T for diluted net loss per share
Net loss attributable to GS&T	$ (48,163)	$ (33,071)
Net loss attributable to GS&T for the computation of diluted net loss per share	$ (48,163)	$ (33,071)

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