Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 30, 2017
Current Assets:
Cash and cash equivalents	$ 746,968	$ 688,087
Short-term investments	5,466	4,455
Receivables, net	225,822	190,426
Inventories	30,090	33,209
Prepaid expenses and other	61,597	63,811
Total current assets	1,069,943	979,988
Property, plant and equipment, net of accumulated depreciation of $673,265 and $658,377, respectively	249,810	251,342
Goodwill	665,615	666,009
Acquired intangibles, net	264,927	278,835
Long-term receivables	9,380	12,239
Other assets	226,998	230,301
Total assets	2,486,673	2,418,714
Current Liabilities:
Revolving credit facility	45,000	85,000
Current portion of long-term debt	299,826	0
Accounts payable and accrued liabilities	210,784	221,101
Current portion of deferred revenue	310,639	336,297
Total current liabilities	866,249	642,398
Long-Term Liabilities:
Long-term portion of deferred revenue	56,276	61,513
Long-term debt	344,766	644,369
Other long-term liabilities	77,084	81,232
Total long-term liabilities	478,126	787,114
Commitments and contingencies
Stockholders' Equity:
Common stock and capital in excess of par value	1,858,692	1,829,950
Treasury stock, at cost	(1,222,151)	(1,178,121)
Retained earnings	499,817	341,003
Accumulated other comprehensive income (loss)	5,940	(3,630)
Total stockholders’ equity	1,142,298	989,202
Total liabilities and stockholders’ equity	$ 2,486,673	$ 2,418,714