Consolidated Balance Sheets - USD ($) $ in Thousands	Jul. 01, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 567,255	$ 505,631
Investments	2,558,691	2,307,401
Accounts receivable, less allowances for doubtful accounts and sales returns of $9,585 and $8,657 at July 1, 2017 and December 31, 2016, respectively	462,811	489,340
Inventories	287,139	262,682
Other current assets	71,339	70,391
Total current assets	3,947,235	3,635,445
Property, plant and equipment, net	338,860	337,118
Intangible assets, net	219,092	207,055
Goodwill	357,122	352,080
Other assets	134,436	130,361
Total assets	4,996,745	4,662,059
Current liabilities:
Notes payable and debt	225,233	125,297
Accounts payable	71,055	67,740
Accrued employee compensation	34,140	57,465
Deferred revenue and customer advances	208,606	148,837
Accrued income taxes	1,405	15,244
Accrued warranty	12,864	13,391
Other current liabilities	99,986	92,347
Total current liabilities	653,289	520,321
Long-term liabilities:
Long-term debt	1,687,233	1,701,966
Long-term portion of retirement benefits	72,381	72,568
Long-term income tax liabilities	8,682	10,458
Other long-term liabilities	56,521	54,797
Total long-term liabilities	1,824,817	1,839,789
Total liabilities	2,478,106	2,360,110
Commitments and contingencies (Notes 5, 6, 7 and 11)
Stockholders' equity:
Preferred stock, par value $0.01 per share, 5,000 shares authorized, none issued at July 1, 2017 and December 31, 2016	0	0
Common stock, par value $0.01 per share, 400,000 shares authorized, 159,437 and 158,634 shares issued, 79,811 and 80,023 shares outstanding at July 1, 2017 and December 31, 2016, respectively	1,594	1,586
Additional paid-in capital	1,683,873	1,607,241
Retained earnings	5,622,448	5,385,069
Treasury stock, at cost, 79,626 and 78,611 shares at July 1, 2017 and December 31, 2016, respectively	(4,641,501)	(4,475,667)
Accumulated other comprehensive loss	(147,775)	(216,280)
Total stockholders' equity	2,518,639	2,301,949
Total liabilities and stockholders' equity	$ 4,996,745	$ 4,662,059

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Balance Type:	credit
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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.