Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Apr. 03, 2015	Apr. 04, 2014
Revenues:
Revenues before reimbursements	$ 76,141	$ 72,967
Reimbursements	4,152	2,995
Revenues	80,293	75,962
Operating expenses:
Compensation and related expenses	51,115	48,858
Other operating expenses	6,510	6,317
Reimbursable expenses	4,152	2,995
General and administrative expenses	3,488	3,698
Total operating expenses	65,265	61,868
Operating income	15,028	14,094
Other income, net:
Interest income, net	34	44
Miscellaneous income, net	2,009	1,227
Total other income, net	2,043	1,271
Income before income taxes	17,071	15,365
Income taxes	6,738	6,211
Net income	$ 10,333	$ 9,154
Net income per share:
Basic	$ 0.78	$ 0.68
Diluted	$ 0.75	$ 0.66
Shares used in per share computations:
Basic	13,311	13,537
Diluted	13,695	13,940
Cash dividends declared per common share	$ 0.3	$ 0.25