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The amount of amortization expense expected to be recognized during the remainder of the current fiscal year.

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Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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Goodwill and Other Intangible Assets (Details) (USD $)	6 Months Ended		3 Months Ended	6 Months Ended
Goodwill and Other Intangible Assets (Details) (USD $)	Jul. 03, 2011	Dec. 31, 2010	Jul. 03, 2011 Customer Contracts [Member]	Jul. 03, 2011 Customer Contracts [Member]	Jul. 03, 2011 Acquired Finite-Lived Intangible Assets [Member]	Jul. 03, 2011 Patents & Trademarks [Member]	Dec. 31, 2010 Patents & Trademarks [Member]	Jul. 03, 2011 Customer Lists [Member]	Dec. 31, 2010 Customer Lists [Member]
Goodwill [Abstract]
Goodwill	$ 67,348,000	$ 67,156,000
Finite-lived intangible assets [Abstract]
Weighted average amortization period for acquired intangible assets subject to amortization	15
Finite-lived intangible assets, gross, non-current			800,000	800,000
Number of PCC satellite facilities			7	7
Finite-lived intangible assets, gross, current			700,000	700,000
Amortization expense			200,000
Estimated amortization expense, 2011				300,000	600,000
Estimated amortization expense, 2012				400,000	600,000
Estimated amortization expense, 2013				400,000	600,000
Estimated amortization expense, 2014				400,000	600,000
Estimated amortization expense, 2015				100,000	600,000
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	8,900,000	8,900,000				6,200,000	6,200,000	2,700,000	2,700,000
Accumulated amortization	$ 5,100,000	$ 4,700,000				$ 3,800,000	$ 3,500,000	$ 1,300,000	$ 1,200,000