Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2012

Long-term Debt, Unclassified [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

Long-term debt consisted of the following:

	June 30, 2012			December 31, 2011
	(in thousands)
Senior notes
3.25% Convertible senior notes due 2016:
Principal amount	$	115,000		$	115,000
Unamortized discount	(15,406		)	(17,079		)
3.25% Convertible senior notes due 2016, net of discount	99,594			97,921
12% Senior notes due 2018:
Principal amount	203,000			203,000
Unamortized discount	(1,618		)	(1,764		)
12% Senior notes due 2018, net of discount	201,382			201,236
Total senior notes	300,976			299,157
Credit facilities
Corporate	265,000			209,000
PDCM	26,000			24,000
Total credit facilities	291,000			233,000
Total long-term debt	$	591,976		$	532,157