CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Statement of Operations
NET SALES	$ 169,806	$ 149,153	$ 331,361	$ 286,000
COST OF GOODS SOLD	114,191	95,686	218,353	184,750
Gross profit	55,615	53,467	113,008	101,250
OPERATING EXPENSES
Selling, general and administrative	22,575	21,422	43,985	42,841
Research and development	6,533	6,815	13,051	13,191
Other operating expenses	1,153	1,222	2,288	2,350
Total operating expenses	30,261	29,459	59,324	58,382
Income from operations	25,354	24,008	53,684	42,868
OTHER INCOME (EXPENSES)	(1,913)	(3,423)	(5,144)	(3,279)
Income before income taxes and noncontrolling interest	23,441	20,585	48,540	39,589
INCOME TAX PROVISION	4,718	3,035	9,553	6,359
NET INCOME	18,723	17,550	38,987	33,230
Less: NET INCOME attributable to noncontrolling interest	(742)	(903)	(1,322)	(1,625)
NET INCOME attributable to common stockholders	$ 17,981	$ 16,647	$ 37,665	$ 31,605
EARNINGS PER SHARE attributable to common stockholders
Basic	$ 0.40	$ 0.38	$ 0.84	$ 0.72
Diluted	$ 0.38	$ 0.37	$ 0.80	$ 0.70
Number of shares used in computation
Basic	45,325	43,975	45,074	43,871
Diluted	47,148	45,510	46,837	45,358