Intangible Assets, Net (Narrative) (Details) (USD $)	9 Months Ended
	Sep. 30, 2012
Goodwill and Intangible Assets Disclosure [Abstract]
Estimated useful life	10 years
Estimated annual amortization expense for intangible assets subject to amortization, 2012	$ 1,402,000
Estimated annual amortization expense for intangible assets subject to amortization, 2013	1,330,000
Estimated annual amortization expense for intangible assets subject to amortization, 2014	1,330,000
Estimated annual amortization expense for intangible assets subject to amortization, 2015	1,330,000
Estimated annual amortization expense for intangible assets subject to amortization, 2016	$ 1,330,000