Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 487,665	$ 422,177
Investments	1,911,598	1,633,211
Accounts receivable, net	468,315	433,616
Inventories	263,415	246,430
Other current assets	82,540	81,610
Total current assets	3,213,533	2,817,044
Property, plant and equipment, net	333,355	321,583
Intangible assets, net	218,022	229,822
Goodwill	356,864	354,838
Other assets	146,903	151,403
Total assets	4,268,677	3,874,690
Current liabilities:
Notes payable and debt	175,309	225,230
Accounts payable	70,573	65,704
Accrued employee compensation	54,653	47,198
Deferred revenue and customer advances	141,505	129,706
Accrued income taxes	14,894	15,143
Accrued warranty	13,349	13,266
Other current liabilities	93,793	84,239
Total current liabilities	564,076	580,486
Long-term liabilities:
Long-term debt	1,493,027	1,237,463
Long-term portion of retirement benefits	77,063	85,230
Long-term income tax liabilities	14,884	20,397
Other long-term liabilities	60,776	56,448
Total long-term liabilities	1,645,750	1,399,538
Total liabilities	$ 2,209,826	$ 1,980,024
Commitments and contingencies (Notes 8, 9, 10, 11 and 14)
Stockholders' equity:
Preferred stock, par value $0.01 per share, 5,000 shares authorized, none issued at December 31, 2015 and December 31, 2014	$ 0	$ 0
Common stock, par value $0.01 per share, 400,000 shares authorized, 157,677 and 156,716 shares issued, 81,472 and 83,147 shares outstanding at December 31, 2015 and December 31, 2014, respectively	1,577	1,567
Additional paid-in capital	1,490,342	1,392,494
Retained earnings	4,863,566	4,394,513
Treasury stock, at cost, 76,205 and 73,569 shares at December 31, 2015 and December 31, 2014, respectively	(4,149,908)	(3,815,203)
Accumulated other comprehensive loss	(146,726)	(78,705)
Total stockholders' equity	2,058,851	1,894,666
Total liabilities and stockholders' equity	$ 4,268,677	$ 3,874,690

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
Period Type:	instant

- 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.