Goodwill and Intangibles (Intangible assets subject to amortization) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Schedule of intangible assets
Gross Carrying Value	$ 4,317	$ 4,317
Accumulated Amortization	(3,609)	(3,217)
Cumulative Foreign Currency Adjustment	(39)	11
Finite-Lived Intangible Assets, Net	669	1,111
Patents [Member]
Schedule of intangible assets
Useful Life	13 years	13 years
Gross Carrying Value	2,476	2,476
Accumulated Amortization	(1,903)	(1,699)
Cumulative Foreign Currency Adjustment	0	0
Finite-Lived Intangible Assets, Net	573	777
Developed core technology [Member]
Schedule of intangible assets
Useful Life	10 years	10 years
Gross Carrying Value	1,100	1,100
Accumulated Amortization	(1,100)	(1,050)
Cumulative Foreign Currency Adjustment	0	29
Finite-Lived Intangible Assets, Net	0	79
Patent license agreement [Member]
Schedule of intangible assets
Useful Life	5 years	5 years
Gross Carrying Value	741	741
Accumulated Amortization	(606)	(468)
Cumulative Foreign Currency Adjustment	(39)	(18)
Finite-Lived Intangible Assets, Net	$ 96	$ 255