Business Acquisitions (Tables)

12 Months Ended

Dec. 31, 2011

Business Acquisitions (Tables) [Abstract]

Summary of preliminary purchase price allocation for acquisitions

	B4			O'Malley			Total
Current assets	$	44,428		$	4,097		$	48,525
Intangible assets		350			1,375			1,725
Goodwill		2,850			1,231			4,081
Property, plant and equipment		1,879			5,959			7,838
Other long-term assets		1,005			111			1,116
Current liabilities		(15,383	)		(4,864	)		(20,247	)
Other long-term liabilities		—			(126	)		(126	)
Total purchase price (a)	$	35,129		$	7,783		$	42,912

(a) Of the $35.1 million purchase price for B4, $0.8 million remained in accounts payable and a $2.8 million earn-out provision remained in other-long term liabilities in the Company's balance sheet at December 31, 2010.