Prepaid Expenses (Tables)

3 Months Ended

Mar. 31, 2012

Prepaid Expenses [Abstract]

Prepaid Expenses Table

	March 31,	December 31,
	2012	2011
	(in thousands)
Prepaid drilling costs	$            55,948	$              42,775
Prepaid insurance	4,704	7,275
Total	$            60,652	$               50,050