GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 30, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of changes to goodwill

The changes to goodwill for the nine months ended September 30, 2012 were as follows (in thousands):

	2012
Balance at January 1, 2012	$	122,392
Acquired from acquisitions	27,449
Increase from adjustments related to the acquisitions during the measurement period	5,037
Currency translation	2,846
Balance at September 30, 2012	$	157,724

Summary of amortizable other intangible assets

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

	September 30, 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	$	114,910	$	48,907	$	66,003	17.8	$	106,939	$	45,629	$	61,310	17.9
Customer relationships	98,613		25,113		73,500		7.0	83,721		17,650		66,071		7.9
Other intangible assets	23,764		11,457		12,307		3.5	21,528		9,265		12,263		5.3
	$	237,287	$	85,477	$	151,810	8.9	$	212,188	$	72,544	$	139,644	10.0

Schedule of expected amortization for the net carrying amount of finite lived intangible assets

Below is the expected future amortization for the net carrying amount of finite lived intangible assets at September 30, 2012 (in thousands):

Years Ending December 31,	Expected Amortization
2012 (three months)	$	4,146
2013	15,485
2014	15,007
2015	14,150
2016	13,478
Thereafter	83,749
	$	146,015