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Property Plant and Equipment (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Depreciation and amortization
Total depreciation and amortization	$ 7,747	$ 7,125	$ 14,941	$ 14,028
Depreciation and amortization included in income from discontinued operations	(7,729)	(7,090)	(14,905)	(13,950)
Depreciation and amortization included in income from continuing operations	$ 18	$ 35	$ 36	$ 78

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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