Accrued Expenses (Tables)

12 Months Ended

Dec. 31, 2012

Accrued Liabilities, Current [Abstract]

Summary of accrued expenses

Accrued expenses consisted of the following (in thousands):

	2012		2011
Accrued interest	$	14,371	$	18,072
Accrued bonus	11,762		8,849
Accrued insurance	52,593		52,437
Accrued property and other taxes	12,074		12,959
Construction retainage	293		8,247
Other	25,464		25,272
Total	$	116,557	$	125,836