Income Taxes (Deferred tax assets and liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Deferred Tax Assets, Net, Current Classification [Abstract]
Inventory cost	$ 2,158	$ 5,657
Accrued expenses and accounts receivable	1,754	1,546
Share based compensation and others	1,538	1,073
Total deferred tax assets, current	5,450	8,276
Deferred Tax Assets, Net, Noncurrent Classification [Abstract]
Plant, equipment and intangible assets	(1,818)	1,325
Foreign tax credits	19,354	19,993
Research and development tax credits	4,098	3,884
Net operating loss carryforwards	1,600	2,156
Accrued pension	11,750	15,078
Share based compensation and others	23,945	10,625
Total deferred tax assets, include valuation allowance	58,929	53,061
valuation allowances	(28,099)	(25,855)
Total deferred tax assets, non-current	30,830	27,206
Deferred tax liabilities, non-current
Step up in basis - acquisition	(3,967)	(10,321)
Convertible debt interest	0	(15,311)
Total deferred tax liabilities, non-current	(3,967)	(25,632)
Total deferred tax assets, non-current	$ 26,863	$ 1,574