Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 03, 2020	Mar. 29, 2019
Revenues:
Revenues before reimbursements	$ 99,720	$ 93,401
Reimbursements	6,233	5,630
Revenues	105,953	99,031
Operating expenses:
Compensation and related expenses	49,985	65,093
Other operating expenses	8,216	8,008
Reimbursable expenses	6,233	5,630
General and administrative expenses	5,531	4,546
Total operating expenses	69,965	83,277
Operating income	35,988	15,754
Other income, net:
Interest income, net	875	1,055
Miscellaneous income (loss), net	(12,808)	6,513
Total other income (loss), net	(11,933)	7,568
Income before income taxes	24,055	23,322
Income taxes	(2,227)	610
Net income	$ 26,282	$ 22,712
Net income per share:
Basic (in dollars per share)	$ 0.50	$ 0.43
Diluted (in dollars per share)	$ 0.49	$ 0.42
Shares used in per share computations:
Basic (in shares)	52,575	52,536
Diluted (in shares)	53,657	53,814
Cash dividends declared per common share (in dollars per share)	$ 0.19	$ 0.16