GOODWILL AND OTHER INTANGIBLE ASSETS

3 Months Ended

Mar. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

The changes to goodwill for the three months ended March 31, 2012 were as follows (in thousands):



	2012
Balance at January 1, 2012	$	122,392
Acquired from acquisitions	1,117
Increase from adjustments related to the acquisitions during the measurement period	1,005
Currency translation and other	1,209
Balance at March 31, 2012	$	125,723

Below is a summary of amortizable other intangible assets (in thousands):



	March 31, 2012							December 31, 2011
	Cost		Accumulated Amortization		Net		Weighted Average Amortization Period (in years)	Cost		Accumulated Amortization		Net		Weighted Average Amortization Period (in years)
Permits	$	107,894	$	46,743	$	61,151	16.7	$	106,939	$	45,629	$	61,310	17.9
Customer relationships	84,776		20,036		64,740		7.6	83,721		17,650		66,071		7.9
Other intangible assets	23,286		10,210		13,076		5.0	21,528		9,265		12,263		5.3
	$	215,956	$	76,989	$	138,967	8.8	$	212,188	$	72,544	$	139,644	10.0

The aggregate amortization expense for the three months ended March 31, 2012 was $3.9 million. The aggregate amortization expense for the three months ended March 31, 2011 was $2.9 million.

Below is the expected future amortization for the net carrying amount of finite lived intangible assets at March 31, 2012 (in thousands):



Years Ending December 31,	Expected Amortization
2012 (nine months)	$	11,255
2013	11,795
2014	11,320
2015	10,776
2016	10,113
Thereafter	80,080
	$	135,339

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

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