CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jul. 01, 2011	Jul. 02, 2010	Jul. 01, 2011	Jul. 02, 2010
Revenues:
Revenues before reimbursements	$ 60,573	$ 55,128	$ 124,756	$ 110,329
Reimbursements	4,533	5,311	13,823	9,516
Revenues	65,106	60,439	138,579	119,845
Operating expenses:
Compensation and related expenses	38,508	34,060	81,208	71,840
Other operating expenses	5,704	5,388	11,486	10,607
Reimbursable expenses	4,533	5,311	13,823	9,516
General and administrative expenses	2,984	2,905	6,319	5,600
Total operating expenses	51,729	47,664	112,836	97,563
Operating income	13,377	12,775	25,743	22,282
Other income (expense), net:
Interest income, net	41	66	62	129
Miscellaneous income (expense), net	542	(560)	1,534	400
Total other income (expense), net	583	(494)	1,596	529
Income before income taxes	13,960	12,281	27,339	22,811
Income taxes	5,743	5,001	11,119	9,292
Net income	$ 8,217	$ 7,280	$ 16,220	$ 13,519
Net income per share:
Basic	$ 0.57	$ 0.51	$ 1.12	$ 0.95
Diluted	$ 0.55	$ 0.48	$ 1.08	$ 0.90
Shares used in per share computations:
Basic	14,402	14,377	14,467	14,295
Diluted	14,971	15,054	15,062	15,009