CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019
Cash flows from operating activities
Net income	$ 32,854	$ 30,156
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	15,185	14,918
Amortization of right of use asset	2,347	1,691
Stock-based compensation expense	2,455	3,827
Gain on non-marketable equity investment	(10,074)	(1,886)
Long-term retirement benefit obligations	(4,469)	(5,754)
Fair market value adjustment on life insurance products	3,469	(1,428)
Other-net	3,064	(7,280)
Changes in operating assets and liabilities:
Accounts receivable-net	55,722	42,409
Other assets	6,826	(4,329)
Accounts payable, accrued payroll and other liabilities	(79,225)	(55,835)
Unexpired subscriptions	10,697	8,695
Net cash provided by operating activities	38,851	25,184
Cash flows from investing activities
Purchases of marketable securities	(142,024)	(112,029)
Maturities of marketable securities	127,291	108,792
Business acquisitions	(8,055)	0
Proceeds from sale of investments – net	2,965	41
Capital expenditures	(15,217)	(10,473)
Other-net	1,617	689
Net cash used in investing activities	(33,423)	(12,980)
Long-term obligations:
Repayment of debt and finance lease obligations	0	(138)
Dividends paid	(8,344)	(6,601)
Capital shares:
Proceeds from stock option exercises	931	2,965
Share-based compensation tax withholding	(11,432)	(15,376)
Net cash used in financing activities	(18,845)	(19,150)
Net decrease in cash, cash equivalents and restricted cash	(13,417)	(6,946)
Effect of exchange rate changes on cash	32	(338)
Cash, cash equivalents and restricted cash at the beginning of the period	247,518	259,799
Cash, cash equivalents and restricted cash at the end of the period	$ 234,133	$ 252,515