CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 25, 2016	Sep. 27, 2015
Cash flows from operating activities
Net income/(loss)	$ (13,795)	$ 11,163
Adjustments to reconcile net income to net cash provided by operating activities:
Restructuring charge	14,804	0
Pension settlement charges	0	40,329
Multiemployer pension plan charges	11,701	4,697
Depreciation and amortization	46,003	46,023
Stock-based compensation expense	8,561	7,588
Undistributed loss of joint ventures	41,845	758
Long-term retirement benefit obligations	(22,366)	(7,767)
Uncertain tax positions	53	147
Other-net	(1,315)	14,303
Changes in operating assets and liabilities:
Accounts receivable-net	54,591	55,120
Other current assets	(21,926)	10,742
Accounts payable, accrued payroll and other liabilities	(45,546)	(76,555)
Unexpired subscriptions	3,461	1,486
Net cash provided by operating activities	76,071	108,034
Cash flows from investing activities
Purchases of marketable securities	(514,809)	(555,040)
Maturities of marketable securities	522,655	626,697
Cash distribution from corporate-owned life insurance	38,000	0
Business acquisitions	(15,410)	0
Purchase of investments – net of proceeds	(1,840)	(3,592)
Capital expenditures	(21,820)	(21,150)
Change in restricted cash	3,816	(1,190)
Other-net	(380)	(343)
Net cash provided by investing activities	10,212	45,382
Cash flows from financing activities
Repayment of debt and capital lease obligations	(460)	(223,653)
Dividends paid	(19,416)	(20,053)
Stock issuances	273	102,803
Repurchases	(15,684)	(43,561)
Net cash used in financing activities	(35,287)	(184,464)
Net increase/(decrease) in cash and cash equivalents	50,996	(31,048)
Effect of exchange rate changes on cash	166	(953)
Cash and cash equivalents at the beginning of the period	105,776	176,607
Cash and cash equivalents at the end of the period	$ 156,938	$ 144,606