Consolidated Balance Sheets - USD ($) $ in Thousands	Oct. 01, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 430,209	$ 487,665
Investments	2,282,806	1,911,598
Accounts receivable, less allowances for doubtful accounts and sales returns of $10,065 and $7,496 at October 1, 2016 and December 31, 2015, respectively	441,768	468,315
Inventories	303,183	263,415
Other current assets	76,404	82,540
Total current assets	3,534,370	3,213,533
Property, plant and equipment, net	329,721	333,355
Intangible assets, net	221,619	218,022
Goodwill	356,446	356,864
Other assets	134,626	146,903
Total assets	4,576,782	4,268,677
Current liabilities:
Notes payable and debt	125,176	175,309
Accounts payable	67,765	70,573
Accrued employee compensation	41,456	54,653
Deferred revenue and customer advances	174,716	141,505
Accrued income taxes	13,610	14,894
Accrued warranty	13,535	13,349
Other current liabilities	83,243	93,793
Total current liabilities	519,501	564,076
Long-term liabilities:
Long-term debt	1,656,832	1,493,027
Long-term portion of retirement benefits	66,493	77,063
Long-term income tax liabilities	11,337	14,884
Other long-term liabilities	63,479	60,776
Total long-term liabilities	1,798,141	1,645,750
Total liabilities	2,317,642	2,209,826
Commitments and contingencies (Notes 6, 7 and 11)
Stockholders' equity:
Preferred stock, par value $0.01 per share, 5,000 shares authorized, none issued at October 1, 2016 and December 31, 2015	0	0
Common stock, par value $0.01 per share, 400,000 shares authorized, 158,565 and 157,677 shares issued, 80,561 and 81,472 shares outstanding at October 1, 2016 and December 31, 2015, respectively	1,586	1,577
Additional paid-in capital	1,594,099	1,490,342
Retained earnings	5,210,691	4,863,566
Treasury stock, at cost, 78,004 and 76,205 shares at October 1, 2016 and December 31, 2015, respectively	(4,391,832)	(4,149,908)
Accumulated other comprehensive loss	(155,404)	(146,726)
Total stockholders' equity	2,259,140	2,058,851
Total liabilities and stockholders' equity	$ 4,576,782	$ 4,268,677

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.