Note 6 - Property, Equipment and Construction in Progress (Tables)

6 Months Ended

Jun. 30, 2013

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

	June 30, 2013			December 31, 2012
	(in thousands)
Construction in progress:
Power plant and related equipment	$	78,198		$	73,958
Platforms and wells		15,158			15,611
Pipelines and processing facilities		3,015			11,784
Other		1,869			1,689
Producing properties (successful efforts method of accounting)		141,219			141,219
Producing equipment		36,770			27,758
Barge and related equipment		53,525			53,425
Office equipment, leasehold improvements and vehicles		9,309			9,249
Accumulated depletion, depreciation and amortization		(110,824	)		(96,136	)
Property, equipment and construction in progress, net	$	228,239		$	238,557

Schedule Of Interest And Depreciation Expense Capitalized To Construction In Progress [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
	(in thousands)
Interest expense capitalized	$	2,372	$	3,760	$	4,991	$	6,732
Depreciation expense capitalized		-		3	$	-	$	5