Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2011

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill [Table Text Block]

Indefinite-lived Intangible Assets:



December 31,	2011		2010
Goodwill¹	$	9,900	$	9,900
Use rights and other	393		1,319
Total unamortized intangible assets	$	10,293	$	11,219

¹Goodwill primarily relates to our Construction segment.

Schedule of Finite-Lived Intangible Assets by Major Class

Amortized Intangible Assets:



			Accumulated
December 31, 2011	Gross Value		Amortization			Net Value
Permits	$	29,713	$	(7,573	)	$	22,140
Customer lists	2,198		(1,942		)	256
Covenants not to compete	1,588		(1,476		)	112
Other	871		(583		)	288
Total amortized intangible assets	$	34,370	$	(11,574	)	$	22,796



December 31, 2010
Permits	$	29,713	$	(6,100	)	$	23,613
Customer lists	2,198		(1,715		)	483
Covenants not to compete	1,588		(1,325		)	263
Other	871		(432		)	439
Total amortized intangible assets	$	34,370	$	(9,572	)	$	24,798

- Definition

Tabular disclosure of amortizable intangibles assets, in total and by major class, including the gross carrying amount and accumulated amortization. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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