Consolidated Balance Sheets (Unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 216,111	$ 162,476
Short-term investments	309,728	269,457
Trade accounts receivable, net	125,517	138,181
Inventories	161,059	156,429
Deferred income taxes	10,371	13,775
Other current assets	27,542	12,577
Total current assets	850,328	752,895
Property, plant and equipment, net	69,891	68,976
Long-term marketable securities	9,260	0
Goodwill	140,084	140,020
Intangible assets, net	1,307	1,743
Other assets	16,842	18,779
Total assets	1,087,712	982,413
Current liabilities:
Short-term borrowings	1,302	0
Accounts payable	22,572	36,427
Accrued compensation	24,519	29,944
Other current liabilities	34,538	43,315
Total current liabilities	82,931	109,686
Other liabilities	32,169	25,688
Commitments and contingencies (Note 15)
Stockholders' equity:
Preferred Stock, $0.01 par value, 2,000,000 shares authorized; none issued and outstanding
Common Stock, no par value, 200,000,000 shares authorized; 52,444,933 and 50,648,601 shares issued and outstanding at September 30, 2011 and December 31, 2010, respectively	113	113
Additional paid-in capital	703,405	663,792
Retained earnings	254,701	171,356
Accumulated other comprehensive income	14,393	11,778
Total stockholders' equity	972,612	847,039
Total liabilities and stockholders' equity	$ 1,087,712	$ 982,413