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Income Taxes
 6 Months Ended
Jun. 29, 2013
Income Taxes [Abstract]  
Income Taxes
5.Provision for Income Taxes

The provision for income taxes was $4,459,000 and $5,843,000 in the first six months of 2013 and 2012, respectively, and represented 28% and 30% of pre-tax income. The effective tax rate of 28% in the first six months of 2013 was lower than the Company's statutory tax rate primarily due to the reduction of the 2012 U.S. tax cost of foreign earnings and a benefit from the 2012 U.S. research and development tax credit, both of which resulted from U.S. tax legislation enacted in January 2013. In addition, the Company's effective tax rate in the first six months of 2013 benefited from the release of a valuation allowance against deferred tax assets related to net operating loss carryforwards. The release of the valuation allowance was due to increased projected profitability associated with the CBTI acquisition. Also contributing to the lower effective tax rate in the first six months of 2013 were lower statutory tax rates in the Company's overseas operations and a more favorable distribution of the Company's worldwide earnings. The effective tax rate of 30% in the first six months of 2012 was lower than the Company's statutory tax rate primarily due to the distribution of worldwide earnings and the expected utilization of foreign tax credits that were fully reserved in prior periods, the latter of which was due to an increase in estimated 2012 income in the U.S.