CONDENSED CONSOLIDATED STATEMENTS OF INCOME (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	$ 351,956	$ 203,187	$ 711,601	$ 378,169
Cost of revenues	310,550	176,551	629,565	327,060
Gross profit	41,406	26,636	82,036	51,109
Selling, general and administrative expenses	20,477	15,823	40,322	29,269
Operating income	20,929	10,813	41,714	21,840
Other income (expense):
Income from non-consolidated entities	4,400	1,756	5,226	2,724
Foreign exchange gain (loss)	(72)	94	(36)	186
Other expense	(306)	(322)	(603)	(631)
Interest income	100	153	258	333
Interest expense	(1,353)	(1,220)	(2,724)	(2,527)
Income before provision for income taxes	23,698	11,274	43,835	21,925
Provision for income taxes	(9,236)	(4,187)	(17,095)	(8,140)
Net income	$ 14,462	$ 7,087	$ 26,740	$ 13,785
Earnings per share:
Basic (in dollars per share)	$ 0.28	$ 0.16	$ 0.53	$ 0.36
Diluted (in dollars per share)	$ 0.28	$ 0.16	$ 0.52	$ 0.30
Weighted average common shares outstanding:
Basic (in shares)	51,044	43,163	50,363	38,210
Diluted (in shares)	51,154	45,407	51,111	45,451