Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
SALES	$ 117,515	$ 128,498	$ 338,960	$ 404,304
COST OF SALES	71,788	79,651	209,760	238,035
GROSS PROFIT	45,727	48,847	129,200	166,269
OPERATING EXPENSES:
Research and development	14,564	17,592	44,181	50,591
Selling, general and administrative	16,806	16,473	53,571	57,379
Amortization of intangible assets	1,416	989	4,139	2,831
Restructuring charges	3,003	3,119	5,434	3,119
Total operating expenses	35,789	38,173	107,325	113,920
OPERATING INCOME	9,938	10,674	21,875	52,349
OTHER INCOME, NET	65	(259)	2,251	496
Income from continuing operations before income taxes	10,003	10,415	24,126	52,845
Provision for income taxes	4,268	3,244	8,824	13,396
INCOME FROM CONTINUING OPERATIONS, NET OF INCOME TAXES	5,735	7,171	15,302	39,449
Income from discontinued operations, net of income taxes	0	(579)	430	(365)
NET INCOME	$ 5,735	$ 6,592	$ 15,732	$ 39,084
Basic weighted-average common shares outstanding (in shares)	37,807	43,535	39,148	43,515
Diluted weighted-average common shares outstanding (in shares)	38,330	43,819	39,720	44,056
CONTINUING OPERATIONS:
BASIC EARNINGS PER SHARE (in dollars per share)	$ 0.15	$ 0.16	$ 0.39	$ 0.91
DILUTED EARNINGS PER SHARE (in dollars per share)	$ 0.15	$ 0.16	$ 0.39	$ 0.90
DISCONTINUED OPERATIONS
BASIC EARNINGS PER SHARE (in dollars per share)	$ 0.00	$ (0.01)	$ 0.01	$ (0.01)
DILUTED EARNINGS PER SHARE (in dollars per share)	$ 0.00	$ (0.01)	$ 0.01	$ (0.01)
NET INCOME:
BASIC EARNINGS PER SHARE (in dollars per share)	$ 0.15	$ 0.15	$ 0.40	$ 0.90
DILUTED EARNINGS PER SHARE (in dollars per share)	$ 0.15	$ 0.15	$ 0.40	$ 0.89