Note 11 - Derivative Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments, Gain (Loss) [Table Text Block]

	Three Months Ended June 30,					Six Months Ended June 30,
	2013			2012		2013			2012
	(in thousands)					(in thousands)
Realized derivative gain (loss)	$	(497	)	$	-	$	(1,897	)	$	-
Unrealized derivative gain (loss)		1,774			8,407		2,626			2,039
Total gain (loss) on derivative financial instruments	$	1,277		$	8,407	$	729		$	2,039