Note 3 - Receivables, Accounts Payable and Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2013

Receivables [Abstract]

Schedule of Value-Added Taxes Receivable [Table Text Block]

	June 30, 2013			December 31, 2012
	(in thousands)
Value-added tax receivable as of the beginning of the period	$	21,784		$	24,720
IGV accrued related to expenditures during period		7,445			67,846
IGV reduced related to sale of oil during period		(12,934	)		(46,586	)
IGV related to the sale of a 49% participating interest in Block Z-1		-			(24,196	)
Value-added tax receivable as of the end of the period	$	16,295		$	21,784
Current portion of value-added tax receivable as of the end of the period	$	14,817		$	20,569
Long-term portion of value-added tax receivable as of the end of the period	$	1,478		$	1,215