Intangible and Other Assets Intangible Asset Narrative (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Patents [Member]	Dec. 31, 2012 Patents [Member]	Jun. 30, 2013 Licenses [Member]	Dec. 31, 2012 Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	$ 251		$ 251		$ 86	$ 111	$ 58	$ 60
Finite-Lived Intangible Assets, Accumulated Amortization					847	822	17	15
Amortization of Intangible Assets	14	27	27	40
Pending Patent	$ 107		$ 107
Finite-Lived Intangible Asset, Useful Life			5 years