CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 338,920	$ 573,736
Marketable securities	431,516	96,502
Accounts receivable, less allowance for doubtful accounts of $4,118 and $4,102 in 2012 and 2011, respectively	153,423	129,330
Inventories:
Parts	89,598	102,307
Assemblies in process	32,303	24,283
Finished goods	17,509	33,473
Inventory, Net, Total	139,410	160,063
Deferred tax assets	77,305	53,948
Prepayments and other current assets	95,487	86,308
Total current assets	1,236,061	1,099,887
Net property, plant and equipment	265,782	232,207
Marketable securities	235,872	84,407
Other assets	20,209	17,545
Retirement plans assets	3,282	8,840
Intangible assets, net	318,867	392,975
Goodwill	349,272	352,778
Total assets	2,429,345	2,188,639
Current liabilities:
Accounts payable	58,324	69,842
Accrued employees' compensation and withholdings	86,264	90,427
Deferred revenue and customer advances	81,357	78,670
Contingent consideration	388	68,892
Other accrued liabilities	56,861	62,420
Accrued income taxes	12,306	860
Current debt	2,328	2,573
Total current liabilities	297,828	373,684
Long-term deferred revenue and customer advances	16,227	33,541
Retirement plans liabilities	94,373	76,638
Deferred tax liabilities	50,201	16,049
Long-term other accrued liabilities	21,302	23,711
Long-term debt	171,059	159,956
Total liabilities	650,990	683,579
Commitments and contingencies (Note L)
SHAREHOLDERS' EQUITY
Common stock, $0.125 par value, 1,000,000 shares authorized, 187,908 and 183,587 shares issued and outstanding at December 31, 2012 and 2011, respectively	23,488	22,948
Additional paid-in capital	1,347,762	1,293,130
Accumulated other comprehensive income	5,820	4,746
Retained earnings	401,285	184,236
Total shareholders' equity	1,778,355	1,505,060
Total liabilities and shareholders' equity	$ 2,429,345	$ 2,188,639