Segment Reporting (Tables)

9 Months Ended

Sep. 28, 2012

Segment Information

Segment information for the three and nine months ended September 28, 2012 and September 30, 2011 is as follows (in thousands):

Revenues
	Three Months Ended				Nine Months Ended
	September 28, 2012		September 30, 2011		September 28, 2012		September 30, 2011
Engineering and other scientific	$	53,071	$	47,785	$	158,784	$	151,233
Environmental and health		20,227		18,166		60,923		53,297
Total revenues	$	73,298	$	65,951	$	219,707	$	204,530

Operating Income
	Three Months Ended						Nine Months Ended
	September 28, 2012			September 30, 2011			September 28, 2012			September 30, 2011
Engineering and other scientific	$	16,217		$	14,708		$	47,573		$	45,212
Environmental and health		6,933			5,691			20,722			15,794
Total segment operating income		23,150			20,399			68,295			61,006
Corporate operating expense		(8,422	)		(3,875	)		(24,390	)		(18,739	)
Total operating income	$	14,728		$	16,524		$	43,905		$	42,267

Capital Expenditures
	Three Months Ended				Nine Months Ended
	September 28, 2012		September 30, 2011		September 28, 2012		September 30, 2011
Engineering and other scientific	$	1,103	$	723	$	2,039	$	1,684
Environmental and health		174		86		348		287
Total segment capital expenditures		1,277		809		2,387		1,971
Corporate capital expenditures		206		162		1,038		667
Total capital expenditures	$	1,483	$	971	$	3,425	$	2,638

Depreciation and Amortization
	Three Months Ended				Nine Months Ended
	September 28, 2012		September 30, 2011		September 28, 2012		September 30, 2011
Engineering and other scientific	$	677	$	686	$	2,061	$	1,986
Environmental and health		72		64		209		168
Total segment depreciation and amortization		749		750		2,270		2,154
Corporate depreciation and amortization		384		375		1,189		1,103
Total depreciation and amortization	$	1,133	$	1,125	$	3,459	$	3,257