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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 $)	9 Months Ended		9 Months Ended					3 Months Ended	9 Months Ended
Goodwill and Other Intangible Assets (Details) (USD $)	Oct. 02, 2011	Dec. 31, 2010	Oct. 02, 2011 Acquired Finite-Lived Intangible Assets [Member]	Oct. 02, 2011 Patents & Trademarks [Member]	Dec. 31, 2010 Patents & Trademarks [Member]	Oct. 02, 2011 Customer Lists [Member]	Dec. 31, 2010 Customer Lists [Member]	Oct. 02, 2011 Customer Lists [Member]	Oct. 02, 2011 Customer Lists [Member]
Goodwill [Abstract]
Goodwill	$ 65,359,000	$ 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								600,000	600,000
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			600,000						100,000
Estimated amortization expense, 2012			600,000						400,000
Estimated amortization expense, 2013			600,000						400,000
Estimated amortization expense, 2014			600,000						400,000
Estimated amortization expense, 2015			600,000						100,000
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	$ 5,300,000	$ 4,700,000		$ 4,000,000	$ 3,500,000	$ 1,300,000	$ 1,200,000