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Consolidated Statements of Income - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 29, 2017
Dec. 30, 2016
Jan. 01, 2016
Revenues:      
Revenues before reimbursements $ 329,664 $ 299,197 $ 295,705
Reimbursements 18,135 15,879 17,127
Revenues [1] 347,799 315,076 312,832
Operating expenses:      
Compensation and related expenses 210,289 193,397 184,502
Other operating expenses 29,544 28,397 26,975
Reimbursable expenses 18,135 15,879 17,127
General and administrative expenses 17,780 15,492 15,295
Total operating expenses 275,748 253,165 243,899
Operating income 72,051 61,911 68,933
Other income:      
Interest income 1,294 683 207
Miscellaneous income, net 9,164 6,528 1,993
Income before income taxes 82,509 69,122 71,133
Provision for income taxes 41,204 21,642 27,534
Net income $ 41,305 $ 47,480 $ 43,599
Net income per share:      
Basic $ 1.57 $ 1.79 $ 1.64
Diluted $ 1.53 $ 1.75 $ 1.6
Shares used in per share computations:      
Basic 26,362 26,488 26,606
Diluted 26,986 27,166 27,298
Cash dividends declared per common share $ 0.84 $ 0.72 $ 0.6
[1] Geographic revenues are allocated based on the location of the client.