Significant Customers	6 Months Ended
Jun. 24, 2012
Segment Reporting [Abstract]
Significant Customers	Significant Customers Revenue from the U.S. Government, which includes foreign military sales, includes revenue from contracts for which the Company is the prime contractor as well as those for which the Company is a subcontractor and the ultimate customer is the U.S. Government. The KGS segment has substantial revenue from the U.S. Government. Sales to the U.S. Government amounted to approximately $122.3 million and $140.0 million, or 71% and 64%, of total revenue for the three months ended June 26, 2011 and June 24, 2012, respectively, and approximately $216.4 million and $280.9 million, or 74% and 65%, of total revenue for the six months ended June 26, 2011 and June 24, 2012, respectively. The U.S. Government continues to focus on developing and implementing spending, tax, and other initiatives to reduce the deficit, create jobs, and stimulate the economy. Although defense spending is expected to remain a national priority within future federal budgets, the Budget Control Act of 2011 (“Budget Control Act”) committed the U.S. Government to reduce the federal deficit over the next ten years. Under the Budget Control Act, the Bi-Partisan Congressional Joint Select Committee on Deficit Reduction (“the Joint Committee”) was responsible for identifying $1.2 to $1.5 trillion in deficit reductions by November 30, 2011. The Joint Committee was unable to identify the reductions by this deadline and thereby triggered a provision of the Budget Control Act called “sequestration,” which requires very substantial automatic spending cuts that will start in 2013 and be split between defense and non-defense programs and continue over a nine-year period. Any automatic reductions in national defense programs could impact the Company's significant customers. The impact of the Budget Control Act remains unknown, and the Company's business and industry could be adversely affected.

Significant Customers

Revenue from the U.S. Government, which includes foreign military sales, includes revenue from contracts for which the Company is the prime contractor as well as those for which the Company is a subcontractor and the ultimate customer is the U.S. Government. The KGS segment has substantial revenue from the U.S. Government. Sales to the U.S. Government amounted to approximately $122.3 million and $140.0 million, or 71% and 64%, of total revenue for the three months ended June 26, 2011 and June 24, 2012, respectively, and approximately $216.4 million and $280.9 million, or 74% and 65%, of total revenue for the six months ended June 26, 2011 and June 24, 2012, respectively.

The U.S. Government continues to focus on developing and implementing spending, tax, and other initiatives to reduce the deficit, create jobs, and stimulate the economy. Although defense spending is expected to remain a national priority within future federal budgets, the Budget Control Act of 2011 (“Budget Control Act”) committed the U.S. Government to reduce the federal deficit over the next ten years. Under the Budget Control Act, the Bi-Partisan Congressional Joint Select Committee on Deficit Reduction (“the Joint Committee”) was responsible for identifying $1.2 to $1.5 trillion in deficit reductions by November 30, 2011. The Joint Committee was unable to identify the reductions by this deadline and thereby triggered a provision of the Budget Control Act called “sequestration,” which requires very substantial automatic spending cuts that will start in 2013 and be split between defense and non-defense programs and continue over a nine-year period. Any automatic reductions in national defense programs could impact the Company's significant customers. The impact of the Budget Control Act remains unknown, and the Company's business and industry could be adversely affected.