Note 9 - Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2011

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
Revenues:
Energy and Mining	$	100,400		$	96,734		$	195,857		$	174,089
North American Sewer Rehabilitation		87,430			99,590			167,235			188,704
European Sewer Rehabilitation		23,609			18,003			44,306			35,633
Asia-Pacific Sewer Rehabilitation		10,735			13,750			22,946			23,623
Water Rehabilitation		2,811			2,115			5,228			7,325
Total revenues	$	224,985		$	230,192		$	435,572		$	429,374
Gross profit (loss):
Energy and Mining	$	24,823		$	27,752		$	47,914		$	48,862
North American Sewer Rehabilitation		13,650			23,180			24,948			44,258
European Sewer Rehabilitation		6,107			4,972			10,624			9,250
Asia-Pacific Sewer Rehabilitation		1,536			3,137			3,889			4,692
Water Rehabilitation		(276	)		158			(361	)		818
Total gross profit	$	45,840		$	59,199		$	87,014		$	107,880
Operating income (loss):
Energy and Mining	$	6,987		$	11,356		$	13,377		$	17,085
North American Sewer Rehabilitation		627			9,847			(612	)		17,354
European Sewer Rehabilitation		1,772			1,268			2,409			1,232
Asia-Pacific Sewer Rehabilitation		(649	)		594			(480	)		(230	)
Water Rehabilitation		(897	)		(318	)		(1,365	)		(187	)
Total operating income	$	7,840		$	22,747		$	13,329		$	35,254

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	Three Months Ended June 30,					Six Months Ended June 30,
	2011			2010		2011			2010
Revenues:
United States	$	136,819		$	157,867	$	250,501		$	288,154
Canada		35,484			28,982		80,465			60,498
Europe		27,847			20,926		52,195			41,764
Other foreign		24,835			22,417		52,411			38,958
Total revenues	$	224,985		$	230,192	$	435,572		$	429,374
Gross profit:
United States	$	25,202		$	38,260	$	44,034		$	70,225
Canada		9,396			9,923		21,205			18,697
Europe		7,201			5,794		12,629			11,009
Other foreign		4,041			5,222		9,146			7,949
Total gross profit	$	45,840		$	59,199	$	87,014		$	107,880
Operating income (loss):
United States	$	(1,521	)	$	11,666	$	(7,689	)	$	17,020
Canada		4,934			6,251		12,683			11,267
Europe		2,899			2,039		4,202			3,586
Other foreign		1,528			2,791		4,133			3,381
Total operating income	$	7,840		$	22,747	$	13,329		$	35,254