Income Taxes (Details)	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012		Jan. 02, 2013
Income Tax Benefit Payable To Former Stockholder [Line Items]
U.S. Federal statutory rate	35.00%	[1]	35.00%	[1]	35.00%	[1]	35.00%	[1]
Effective tax rate	30.90%	[1]	31.90%	[1]	26.40%	[1]	33.80%	[1]
Percentage the company is obligated to remit to an affiliate of the former significant stockholder					85.00%
Extension of Research and Development Credits and Other Federal Tax Incentives, Period									2 years
Tax differential on foreign earnings	(0.30%)	[1]	2.70%	[1]	(0.30%)	[1]	1.50%	[1]
Portion Including Payable To Former Stockholder [Member]
Income Tax Benefit Payable To Former Stockholder [Line Items]
U.S. state taxes, net of Federal benefit	(1.70%)	[1]	(4.10%)	[1]	(1.90%)	[1]	(1.40%)	[1]
Export sales exclusion/manufacturer's deduction	(0.70%)	[1],[2]	(3.30%)	[1],[2]	0.80%	[1],[2]	(3.10%)	[1],[2]
Research and development credit	(1.80%)	[1],[2]	0.00%	[1],[2]	(6.10%)	[1],[2]	0.00%	[1],[2]
Federal energy tax credit	(2.00%)	[1],[3]	0.00%	[1],[3]	(2.10%)	[1],[3]	0.00%	[1],[3]
Executive compensation	3.20%	[1]	0.90%	[1]	3.20%	[1]	0.60%	[1]
Other	0.30%	[1]	(0.80%)	[1]	0.40%	[1]	0.00%	[1]
Effective tax rate combined with increase or decrease in income tax benefit payable to former stockholder	32.00%	[1]	30.40%	[1]	29.00%	[1]	32.60%	[1]
Portion Relating To Payable To Former Stockholder [Member]
Income Tax Benefit Payable To Former Stockholder [Line Items]
U.S. state taxes, net of Federal benefit	0.00%	[1]	(0.10%)	[1]	0.00%	[1]	(0.20%)	[1]
Export sales exclusion/manufacturer's deduction	0.40%	[1],[2]	3.10%	[1],[2]	(1.00%)	[1],[2]	2.90%	[1],[2]
Other	(1.50%)	[1]	(1.50%)	[1]	(1.60%)	[1]	(1.50%)	[1]
Total change in income tax benefit payable to former stockholder	(1.10%)	[1]	1.50%	[1]	(2.60%)	[1]	1.20%	[1]

[1] As a result of a partial increase in the tax basis of the Company's tangible and intangible assets attributable to transactions entered into by affiliates controlled by a former stockholder at the time of the Company's 2004 initial public offering, the Company may pay reduced tax amounts to the extent it generates sufficient taxable income in the future. The Company is obligated to remit to an affiliate of the former stockholder 85% of any realized cash savings in U.S. Federal income tax, California franchise tax and certain other related tax benefits. Refer to the Company's 2012 Form 10-K for a more detailed description.

[2] The American Taxpayer Relief Act of 2012 (the "Act"), enacted on January 2, 2013, included extensions to many expiring corporate income tax provisions. The Act included a two-year extension of research and development credits and other federal tax incentives, which are to be retroactively applied beginning with January 1, 2012 and ending on December 31, 2013. The Company recognized the effects of the retroactive changes in its results for the three months ended March 31, 2013 (the period of enactment).

[3] The Company's policy for accounting for investment tax credits is to recognize the income tax benefit in the year that the credit is generated.