Operating Segments (Schedule of Segment Income (Loss) Attributable to Harvest) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Income (loss) from continuing operations	[1]	$ 5,712	$ (3,998)	$ (25,330)	$ (13,296)
DISCONTINUED OPERATIONS			(142)		(503)
NET INCOME (LOSS) ATTRIBUTABLE TO HARVEST AND COMPREHENSIVE INCOME (LOSS)		$ 5,712	(4,140)	$ (25,330)	(13,799)
Venezuela [Member]
Segment Reporting Information [Line Items]
Income (loss) from continuing operations		(17)	(170)	(125)	16,862
Gabon [Member]
Segment Reporting Information [Line Items]
Income (loss) from continuing operations		(1,293)	(1,096)	(4,141)	(3,578)
Indonesia [Member]
Segment Reporting Information [Line Items]
Income (loss) from continuing operations		13	(274)	(42)	(9,206)
United States and Other [Member]
Segment Reporting Information [Line Items]
Income (loss) from continuing operations		$ 7,009	$ (2,458)	$ (21,022)	$ (17,374)

[1] Net of net income (loss) attributable to noncontrolling interests.