Quarters Ended March 31,
	2008	2007
Revenues	$  295,964	$  228,222
Costs of revenues	243,542	188,256
Research and development expenses	8,982	2,850
Selling, general and administrative expenses	21,885	19,595
Income from operations	21,555	17,521
Interest income and other	2,386	3,038
Interest expense	(1,045)	(1,148)
Income before income taxes	22,896	19,411
Provision for income taxes	(9,214)	(7,959)
Net income	$    13,682	$     11,452
Basic net income per share:	$      0.23	$       0.19
Diluted net income per share:	$      0.23	$       0.19

See accompanying notes to condensed consolidated financial statements.