Segment Data (Tables)

6 Months Ended

Jun. 30, 2011

Segment Data [Abstract]

Summary of key segment information

The following is a summary of key segment information (in thousands of dollars):

Three Months Ended June 30, 2011
				Power			Corporate
	Oil Field			Transmission			& Other			Total
Gross sales	$	180,736		$	51,051		$	-		$	231,787
Inter-segment sales		(1,814	)		(3,213	)		-			(5,027	)
Net sales	$	178,922		$	47,838		$	-		$	226,760
Operating income	$	24,931		$	4,086		$	-		$	29,017
Other (expense) income, net		(177	)		33			(44	)		(188	)
Earnings (loss) from continuing operations before income tax provision	$	24,754		$	4,119		$	(44	)	$	28,829
Three Months Ended June 30, 2010
				Power			Corporate
	Oil Field			Transmission			& Other			Total
Gross sales	$	114,896		$	39,549		$	-		$	154,445
Inter-segment sales		(632	)		(966	)		-			(1,598	)
Net sales	$	114,264		$	38,583		$	-		$	152,847
Operating income	$	15,431		$	1,596		$	-		$	17,027
Other (expense) income, net		(516	)		20			35			(461	)
Earnings from continuing operations before income tax provision	$	14,915		$	1,616		$	35		$	16,566
Six Months Ended June 30, 2011
				Power			Corporate
	Oil Field			Transmission			& Other			Total
Gross sales	$	335,919		$	93,669		$	-		$	429,588
Inter-segment sales		(3,275	)		(5,157	)		-			(8,432	)
Net sales	$	332,644		$	88,512		$	-		$	421,156
Operating income	$	42,125		$	6,345		$	-		$	48,470
Other (expense) income, net		(137	)		22			(150	)		(265	)
Earnings (loss) from continuing operations before income tax provision	$	41,988		$	6,367		$	(150	)	$	48,205
Six Months Ended June 30, 2010
				Power			Corporate
	Oil Field			Transmission			& Other			Total
Gross sales	$	205,097		$	77,417		$	-		$	282,514
Inter-segment sales		(913	)		(1,632	)		-			(2,545	)
Net sales	$	204,184		$	75,785		$	-		$	279,969
Operating income	$	22,461		$	3,861		$	-		$	26,322
Other (expense) income, net		(402	)		54			(38	)		(386	)
Earnings (loss) from continuing operations before income tax provision	$	22,059		$	3,915		$	(38	)	$	25,936