Property, Plant And Equipment (Tables)

12 Months Ended

Dec. 31, 2012

Property, Plant And Equipment [Abstract]

Summary Of Property, Plant And Equipment

	2012	2011
Buildings, improvements and leasehold improvements	$        230,457	$        139,432
Marine vessels and equipment	199,819	417,413
Machinery and equipment	3,500,112	1,596,580
Automobiles, trucks, tractors and trailers	60,805	38,770
Furniture and fixtures	59,124	40,575
Construction-in-progress	410,425	171,108
Land	59,824	29,518
Oil and gas producing assets	77,285	44,109
	4,597,851	2,477,505
Accumulated depreciation and depletion	(1,342,631)	(970,137)
Property, plant and equipment, net	$     3,255,220	$     1,507,368