Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2011

Goodwill and Intangible Assets [Abstract]

Changes in the carrying amount of goodwill

The changes in the carrying amount of goodwill during the nine months ended September 30, 2011, are as follows (in thousands of dollars):

				Power
	Oil Field			Transmission		Total
Balance as of 12/31/10	$	45,862		$	7,149	$	53,011
Goodwill acquired during the period		14,538					14,538
Foreign currency translation		(1,380	)		3		(1,377	)
Balance as of 9/30/11	$	59,020		$	7,152	$	66,172

Components of intangible assets

The components of these intangible assets are as follows (in thousands of dollars):

	September 30, 2011						Average
	Gross						Amortization
	Carrying		Accumulated				Period
	Amount		Amortization		Net		(years)
Non-compete agreements and trademarks	$	2,945	$	928	$	2,017		6.1
Customer relationships and contracts		18,679		3,619		15,060		11.6
	$	21,624	$	4,547	$	17,077		8.4

							Weighted
	December 31, 2010						Average
	Gross						Amortization
	Carrying		Accumulated				Period
	Amount		Amortization		Net		(years)
Non-compete agreements and trademarks	$	2,550	$	619	$	1,931		6.3
Customer relationships and contracts		15,183		2,375		12,808		10.0
	$	17,733	$	2,994	$	14,739		7.0

Expected amortization expense by year

Expected amortization expense by year is (in thousands of dollars):

For the year ended 12/31/12	$	2,263
For the year ended 12/31/13		2,236
For the year ended 12/31/14		2,085
For the year ended 12/31/15		2,048
For the year ended 12/31/16		1,977
Thereafter	$	6,021