CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018
Cash flows from operating activities
Net income	$ 71,754	$ 70,484
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	45,548	43,969
Stock-based compensation expense	9,723	9,969
Long-term retirement benefit obligations	(17,648)	(19,769)
Fair market value adjustment on life insurance products	(2,215)	(823)
Other-net	(3,350)	1,183
Changes in operating assets and liabilities:
Accounts receivable-net	55,383	27,024
Other assets	(17,401)	6,226
Accounts payable, accrued payroll and other liabilities	(22,898)	(28,702)
Unexpired subscriptions	2,704	6,815
Net cash provided by operating activities	121,600	116,376
Cash flows from investing activities
Purchases of marketable securities	(466,108)	(386,842)
Maturities of marketable securities	458,810	346,601
Capital expenditures	(33,101)	(61,983)
Other-net	3,141	(1,585)
Net cash used in investing activities	(37,258)	(103,809)
Long-term obligations:
Repayment of debt and finance lease obligations	(7,220)	(414)
Dividends paid	(23,269)	(19,761)
Capital shares:
Proceeds from stock option exercises	2,998	40,650
Share-based compensation tax withholding	(15,648)	(9,048)
Net cash (used in)/provided by financing activities	(43,139)	11,427
Net increase in cash, cash equivalents and restricted cash	41,203	23,994
Effect of exchange rate changes on cash	(202)	(540)
Cash, cash equivalents and restricted cash at the beginning of the period	259,799	200,936
Cash, cash equivalents and restricted cash at the end of the period	$ 300,800	$ 224,390