Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 266,302	$ 320,361
Short-term investments in marketable securities	79,532	16,213
Short-term restricted cash	14,522	22,564
Receivables, net of allowances for doubtful accounts of $2,718 and $5,553	211,160	185,955
Inventories	192,540	182,010
Deferred tax assets	12,245	18,899
Other current assets	29,332	27,964
Total current assets	805,633	773,966
Non-current investments in marketable securities	29,179	53,341
Long-term restricted cash	27,425	43,669
Property, plant and equipment, net of accumulated depreciation of $121,560 and $106,760	109,872	85,082
Intangible assets, net of accumulated amortization of $10,984 and $5,706	51,499	6,938
Goodwill	131,320	58,053
Deferred tax assets	5,092	934
Non-current inventories	65,116	57,575
Other assets, net	9,087	10,351
Total Assets	1,234,223	1,089,909
Current liabilities:
Accounts payable	54,847	52,470
Accrued payroll liabilities	39,100	46,698
Accrued warranty reserves	12,049	11,683
Accrued agent commissions	8,124	9,005
Short-term deferred revenue	74,736	72,730
Income taxes payable	1,343	11,260
Accrued restructuring, reorganization, relocation and severance	2,692	2,213
Convertible debt	89,010	0
Other current liabilities	36,902	48,623
Total current liabilities	318,803	254,682
Long-term convertible debt	0	89,011
Long-term deferred revenue	26,668	23,423
Deferred tax liabilities	17,588	6,607
Other liabilities	31,261	19,372
Commitments and contingencies
Shareholders' Equity:
Preferred stock - 500 shares authorized; none issued and outstanding	0	0
Common stock - 70,000 shares authorized; 38,478 and 37,866 shares issued and outstanding, no par value	516,907	493,698
Retained earnings	284,440	178,661
Accumulated other comprehensive income	38,556	24,455
Total Shareholders' Equity	839,903	696,814
Total Liabilities and Shareholders' Equity	$ 1,234,223	$ 1,089,909