CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jul. 01, 2018
Cash flows from operating activities
Net income	$ 55,327	$ 45,510
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	30,098	29,122
Stock-based compensation expense	6,826	7,145
Long-term retirement benefit obligations	(11,574)	(8,435)
Fair market value adjustment on life insurance products	(2,048)	(325)
Other-net	(6,167)	1,283
Changes in operating assets and liabilities:
Accounts receivable-net	59,673	46,976
Other assets	(14,555)	14,430
Accounts payable, accrued payroll and other liabilities	(57,217)	(65,393)
Unexpired subscriptions	3,637	7,356
Net cash provided by operating activities	64,000	77,669
Cash flows from investing activities
Purchases of marketable securities	(225,765)	(229,534)
Maturities of marketable securities	223,327	234,883
Capital expenditures	(23,065)	(45,529)
Other-net	1,982	(1,474)
Net cash used in investing activities	(23,521)	(41,654)
Long-term obligations:
Repayment of debt and finance lease obligations	(230)	(276)
Dividends paid	(14,936)	(13,128)
Capital shares:
Proceeds from stock option exercises	2,965	40,527
Share-based compensation tax withholding	(15,649)	(8,956)
Net cash (used in)/provided by financing activities	(27,850)	18,167
Net increase in cash, cash equivalents and restricted cash	12,629	54,182
Effect of exchange rate changes on cash	305	(473)
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	$ 272,733	$ 254,645