Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues	$ 224,985	$ 230,192	$ 435,572	$ 429,374
Cost of revenues	179,145	170,993	348,558	321,494
Gross profit	45,840	59,199	87,014	107,880
Operating expenses	37,674	36,452	73,359	72,626
Acquisition-related expenses	326		326
Operating income	7,840	22,747	13,329	35,254
Other income (expense):
Interest income	51	63	136	166
Interest expense	(1,666)	(1,886)	(3,659)	(4,263)
Other	2,247	131	1,781	(28)
Total other income (expense)	632	(1,692)	(1,742)	(4,125)
Income before taxes on income	8,472	21,055	11,587	31,129
Taxes on income	1,961	6,485	2,802	9,684
Income before equity in earnings of affiliated companies	6,511	14,570	8,785	21,445
Equity in earnings of affiliated companies, net of tax	762	1,526	1,615	2,677
Income before discontinued operations	7,273	16,096	10,400	24,122
Loss from discontinued operations, net of tax		(28)		(76)
Net income	7,273	16,068	10,400	24,046
Less: net (income) loss attributable to noncontrolling interests	356	(291)	235	192
Net income attributable to common stockholders	$ 7,629	$ 15,777	$ 10,635	$ 24,238
Basic:
Income from continuing operations (in Dollars per share)	$ 0.19	$ 0.40	$ 0.27	$ 0.62
Loss from discontinued operations (in Dollars per share)		$ 0.00		$ 0.00
Net income (in Dollars per share)	$ 0.19	$ 0.40	$ 0.27	$ 0.62
Diluted:
Income from continuing operations (in Dollars per share)	$ 0.19	$ 0.40	$ 0.27	$ 0.62
Loss from discontinued operations (in Dollars per share)		$ 0.00		$ 0.00
Net income (in Dollars per share)	$ 0.19	$ 0.40	$ 0.27	$ 0.62