CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Apr. 02, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 480,070	$ 501,234
Investments	23,025	68,051
Accounts receivable, net	607,262	612,648
Inventories	381,902	356,095
Other current assets	92,915	90,914
Total current assets	1,585,174	1,628,942
Property, plant and equipment, net	547,199	547,913
Intangible assets, net	236,408	242,401
Goodwill	435,807	437,865
Operating lease assets	86,944	84,734
Other assets	149,737	153,077
Total assets	3,041,269	3,094,932
Current liabilities:
Accounts payable	93,235	96,799
Accrued employee compensation	33,770	101,192
Deferred revenue and customer advances	315,086	227,561
Current operating lease liabilities	26,089	27,906
Accrued income taxes	82,634	61,278
Accrued warranty	10,212	10,718
Other current liabilities	126,803	155,054
Total current liabilities	687,829	680,508
Long-term liabilities:
Long-term debt	1,444,122	1,513,870
Long-term portion of retirement benefits	58,442	64,027
Long-term income tax liabilities	319,896	319,547
Long-term operating lease liabilities	61,129	59,623
Other long-term liabilities	94,914	89,803
Total long-term liabilities	1,978,503	2,046,870
Total liabilities	2,666,332	2,727,378
Commitments and contingencies (Notes 6, 7, 8 and 11)
Stockholders' equity:
Preferred stock, par value $0.01 per share, 5,000 shares authorized, none issued at April 2, 2022 and December 31, 2021	0	0
Common stock, par value $0.01 per share, 400,000 shares authorized, 162,252 and 162,084 shares issued, 60,372 and 60,728 shares outstanding at April 2, 2022 and December 31, 2021, respectively	1,623	1,621
Additional paid-in capital	2,138,426	2,114,880
Retained earnings	7,960,663	7,800,832
Treasury stock, at cost, 101,880 and 101,356 shares at April 2, 2022 and December 31, 2021, respectively	(9,608,050)	(9,437,914)
Accumulated other comprehensive loss	(117,725)	(111,865)
Total stockholders' equity	374,937	367,554
Total liabilities and stockholders' equity	$ 3,041,269	$ 3,094,932

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522