GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of changes to goodwill

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

Summary of amortizable other intangible assets

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

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 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