XML 26 R52.htm IDEA: XBRL DOCUMENT

Property and Equipment (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Property and Equipment (Textual) [Abstract]
Depreciation expense	$ 7.9	$ 7.1	$ 14.7	$ 13.9

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References+ Details