Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 01, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 584,444	$ 505,631
Investments	2,382,019	2,307,401
Accounts receivable, less allowances for doubtful accounts and sales returns of $8,046 and $8,657 at April 1, 2017 and December 31, 2016, respectively	461,755	489,340
Inventories	279,976	262,682
Other current assets	70,230	70,391
Total current assets	3,778,424	3,635,445
Property, plant and equipment, net	334,382	337,118
Intangible assets, net	211,049	207,055
Goodwill	353,796	352,080
Other assets	133,052	130,361
Total assets	4,810,703	4,662,059
Current liabilities:
Notes payable and debt	225,285	125,297
Accounts payable	66,929	67,740
Accrued employee compensation	29,872	57,465
Deferred revenue and customer advances	201,979	148,837
Accrued income taxes	2,892	15,244
Accrued warranty	12,998	13,391
Other current liabilities	92,256	92,347
Total current liabilities	632,211	520,321
Long-term liabilities:
Long-term debt	1,642,099	1,701,966
Long-term portion of retirement benefits	72,565	72,568
Long-term income tax liabilities	9,782	10,458
Other long-term liabilities	59,232	54,797
Total long-term liabilities	1,783,678	1,839,789
Total liabilities	2,415,889	2,360,110
Commitments and contingencies (Notes 5, 6 and 10)
Stockholders' equity:
Preferred stock, par value $0.01 per share, 5,000 shares authorized, none issued at April 1, 2017 and December 31, 2016	0	0
Common stock, par value $0.01 per share, 400,000 shares authorized, 159,196 and 158,634 shares issued, 80,001 and 80,023 shares outstanding at April 1, 2017 and December 31, 2016, respectively	1,592	1,586
Additional paid-in capital	1,653,973	1,607,241
Retained earnings	5,490,626	5,385,069
Treasury stock, at cost, 79,195 and 78,611 shares at April 1, 2017 and December 31, 2016, respectively	(4,564,840)	(4,475,667)
Accumulated other comprehensive loss	(186,537)	(216,280)
Total stockholders' equity	2,394,814	2,301,949
Total liabilities and stockholders' equity	$ 4,810,703	$ 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.