CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2021	Mar. 29, 2020
Cash flows from operating activities
Net income	$ 41,109	$ 32,854
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	14,717	15,185
Amortization of right of use asset	2,166	2,347
Stock-based compensation expense	4,185	2,455
Gain on non-marketable equity investment	0	(10,074)
Long-term retirement benefit obligations	(4,004)	(4,469)
Fair market value adjustment on life insurance products	208	3,469
Other – net	(1,277)	3,064
Changes in operating assets and liabilities:
Accounts receivable – net	38,522	55,722
Other assets	(3,768)	6,826
Accounts payable, accrued payroll and other liabilities	(68,428)	(79,225)
Unexpired subscriptions	9,499	10,697
Net cash provided by operating activities	32,929	38,851
Cash flows from investing activities
Purchases of marketable securities	(177,543)	(142,024)
Maturities of marketable securities	155,782	127,291
Business acquisitions	0	(8,055)
(Purchases)/sales of investments – net	(70)	2,965
Capital expenditures	(6,394)	(15,217)
Other-net	2,017	1,617
Net cash used in investing activities	(26,208)	(33,423)
Long-term obligations:
Dividends paid	(10,072)	(8,344)
Capital shares:
Proceeds from stock option exercises	2,447	931
Share-based compensation tax withholding	(10,483)	(11,432)
Net cash used in financing activities	(18,108)	(18,845)
Net decrease in cash, cash equivalents and restricted cash	(11,387)	(13,417)
Effect of exchange rate changes on cash	(341)	32
Cash, cash equivalents and restricted cash at the beginning of the period	301,964	247,518
Cash, cash equivalents and restricted cash at the end of the period	$ 290,236	$ 234,133