QUANTA SERVICES INC, QUANTA SERVICES MANAGEMENT ...

QUANTA SERVICES, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — (Continued)
Activity in Quanta’s intangible assets consists of the following (in thousands):
As of
December 31, 2010
Intangible
Assets
Twelve Months Ended
December 31, 2011
Accumulated
Amortization Amortization
Expense Additions
Foreign
Currency
Translation
As of
December 31, 2011
Intangible
Assets, Net
Remaining
Weighted
Average
Amortization
Period in
Years
Customer
relationships ..... $153,100 $ (27,880) $(10,565) $20,144 $(1,064) $133,735 12.0
Backlog ........... 108,421 (88,429) (12,723) 13,918 (561) 20,626 2.3
Trade names ....... 27,249 (1,005) (943) 2,594 (182) 27,713 28.0
Non-compete
agreements ....... 23,954 (13,164) (4,441) 3,728 (267) 9,810 3.2
Patented rights and
developed
technology ....... 16,078 (4,257) (1,266) — — 10,555 8.8
Software .......... — — (15) 300 — 285 4.8
Total intangible assets
subject to
amortization ..... 328,802 (134,735) (29,953) 40,684 (2,074) 202,724 12.6
Other intangible
assets not subject to
amortization ..... — — — 4,500 — 4,500 N/A
Total intangible
assets ............. $328,802 $(134,735) $(29,953) $45,184 $(2,074) $207,224 N/A
Amortization expense for intangible assets was $30.0 million, $38.6 million and $39.0 million for the years
ended December 31, 2011, 2010 and 2009, respectively. The estimated future aggregate amortization expense of
intangible assets as of December 31, 2011 is set forth below (in thousands):
For the Fiscal Year Ending December 31,
2012 .................................................................... $ 32,264
2013 .................................................................... 18,936
2014 .................................................................... 16,980
2015 .................................................................... 14,849
2016 .................................................................... 13,370
Thereafter ................................................................ 106,325
Total .................................................................. $202,724
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