XML 21 R46.htm IDEA: XBRL DOCUMENT

Property and Equipment (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property and Equipment (Textual) [Abstract]
Depreciation expense	$ 9.8	$ 10.3	$ 10.3

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