Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 30, 2011	Dec. 31, 2010	Jan. 01, 2010
Revenues:
Revenues before reimbursements	$ 246,667	$ 221,860	$ 205,714
Reimbursements	25,779	26,893	22,168
Revenues	272,446	248,753	227,882
Operating expenses:
Compensation and related expenses	156,853	144,842	140,107
Other operating expenses	23,238	21,413	21,340
Reimbursable expenses	25,779	26,893	22,168
General and administrative expenses	13,116	12,364	11,005
Operating Expenses, Total	218,986	205,512	194,620
Operating income	53,460	43,241	33,262
Other income:
Interest income, net	236	198	614
Miscellaneous income, net	1,123	3,269	3,145
Income before income taxes	54,819	46,708	37,021
Provision for income taxes	22,124	19,187	14,894
Net income	$ 32,695	$ 27,521	$ 22,127
Net income per share:
Basic	$ 2.31	$ 1.92	$ 1.56
Diluted	$ 2.22	$ 1.83	$ 1.47
Shares used in per share computations:
Basic	14,181	14,354	14,186
Diluted	14,751	15,069	15,030