E-Z-GO 2006 Annual Report Download - page 69

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48
Intangible Assets
All of our acquired intangible assets are subject to amortization and are composed of the following:
December 30, 2006 December 31, 2005
Weighted-
Average
Amortization Gross Gross
Period Carrying Accumulated Carrying Accumulated
(Dollars in millions)
(In years) Amount Amortization Net Amount Amortization Net
Trademarks 16 $ 46 $ 8 $ 38 $ 29 $ 7 $ 22
Unpatented technology 9 39 1 38 2 — 2
Customer agreements 15 35 1 34———
Patents 16 15 9 6 12 8 4
Other 632112112 8 4
$ 167 $ 30 $ 137 $ 55 $ 23 $ 32
We amortize intangible assets using the straight-line method over the useful lives of the assets. Amortization expense totaled $7 million in 2006,
$4 million in 2005 and $6 million in 2004. Amortization expense is estimated to be approximately $15 million in both 2007 and 2008, $14 million
in both 2009 and 2010, and $12 million in 2011.
Note 4. Accounts Receivable
Accounts receivable is composed of the following:
December 30, December 31,
(In millions)
2006 2005
Commercial $ 690 $ 660
U.S. Government contracts 308 269
998 929
Less allowance for doubtful accounts (34) (38)
$ 964 $ 891
We have unbillable receivables on U.S. Government contracts that arise when the revenues we have appropriately recognized based on perfor-
mance cannot be billed yet under terms of the contract. Unbillable receivables within accounts receivable totaled $144 million at December 30,
2006 and $125 million at December 31, 2005. Long-term contract receivables due from the U.S. Government exclude significant amounts billed
but unpaid due to contractual retainage provisions or subject to collection uncertainty.
Notes to the Consolidated Financial Statements