CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net sales	$ 221,872	$ 200,405	$ 601,508	$ 592,005
Cost of sales	145,432	140,284	412,295	409,228
Gross profit	76,440	60,121	189,213	182,777
Selling, general and administrative expenses	21,388	17,881	59,690	50,740
Research and development expenses	19,470	19,003	59,063	58,115
Restructuring and impairment charges		1,621		4,096
Special expense for IPO incentive				12,146
Operating income	35,582	21,616	70,460	57,680
Other income (expenses)
Interest expense, net	(5,746)	(5,860)	(16,945)	(19,340)
Foreign currency gain (loss), net	21,782	(68,058)	22,305	(28,465)
Loss on early extinguishment of senior notes		(1,357)		(5,460)
Others	695	(558)	1,485	(189)
Net other income (expenses)	16,731	(75,833)	6,845	(53,454)
Income (loss) before income taxes	52,313	(54,217)	77,305	4,226
Income tax expense	3,901	1,793	9,290	6,138
Net income (loss)	$ 48,412	$ (56,010)	$ 68,015	$ (1,912)
Earnings (loss) per common share-
Basic	$ 1.34	$ (1.43)	$ 1.85	$ (0.05)
Diluted	$ 1.30	$ (1.43)	$ 1.80	$ (0.05)
Weighted average number of shares-
Basic	36,199,655	39,064,071	36,810,214	38,823,720
Diluted	37,324,787	39,064,071	37,692,608	38,823,720