CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 29, 2014	Dec. 28, 2013
Current assets
Cash and cash equivalents	$ 169,850	$ 155,927
Trade receivables, net	239,998	220,630
Inventories	91,674	89,396
Other current assets	88,459	85,847
Current assets of discontinued businesses	677	750
Total current assets	590,658	552,550
Property, plant and equipment, net	665,609	676,182
Goodwill	230,321	230,701
Other intangibles, net	79,451	84,537
Deferred tax asset	18,711	23,671
Other assets	64,043	61,964
Long-term assets of discontinued businesses	2,970	3,151
Total assets	1,651,763	1,632,756
Current liabilities
Current portion of long-term debt and capital leases	26,683	21,437
Accounts payable	35,253	31,770
Accrued compensation	52,434	58,461
Deferred revenue	54,422	54,177
Accrued liabilities	58,925	56,712
Other current liabilities	9,855	22,546
Current liabilities of discontinued businesses	1,747	1,931
Total current liabilities	239,319	247,034
Long-term debt and capital leases	614,129	642,352
Other long-term liabilities	70,440	70,632
Long-term liabilities	7,615	8,080
Total liabilities	931,503	968,098
Commitments and contingencies
Redeemable noncontrolling interest	21,579	20,581
Shareholders' equity
Preferred stock, $0.01 par value; 20,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.01 par value; 120,000,000 shares authorized; 80,763,440 issued and 49,106,698 shares outstanding at March 30, 2013 and 79,607,981 issued and 48,220,037 shares outstanding at December 29, 2012	836	825
Capital in excess of par value	2,249,137	2,206,155
Accumulated deficit	(233,241)	(265,473)
Treasury stock, at cost, 31,656,742 shares and 31,387,944 shares at March 30, 2013 and December 29, 2012, respectively	(1,322,354)	(1,305,880)
Accumulated other comprehensive income	1,084	5,357
Total shareholders' equity	695,462	640,984
Noncontrolling interests	3,219	3,093
Stockholder's Equity, Including Noncontrolling Interest and Redeemable Noncontrolling Interest	720,260	664,658
Total liabilities and equity	$ 1,651,763	$ 1,632,756