EARNINGS (LOSS) PER SHARE (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings (Loss) Per Share
Net earnings (loss)	$ (82,717)	$ 33,439	$ (103,724)	$ (34,509)
Less: net earnings attributable to participating securities	0	(1,014)	0	0
Net earnings (loss) for basic and diluted earnings (loss) per share	$ (82,717)	$ 32,425	$ (103,724)	$ (34,509)
Weighted Average Number of Shares Outstanding Reconciliation
Weighted average common shares outstanding during the period for basic earnings (loss) per share	117,117	116,033	116,979	115,845
Dilutive effects of potential common shares	0	0	0	0
Weighted average common shares outstanding during the period, including the effects of dilutive potential common shares, for diluted earnings (loss) per share	117,117	116,033	116,979	115,845