XML 22 R42.htm IDEA: XBRL DOCUMENT

Property And Equipment (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Property And Equipment [Abstract]
Depreciation and amortization expense	$ 2,180	$ 1,972

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