Intangible Assets (Schedule of Finite-Lived Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]    
Finite lived intangible assets Net $ 22,748  
Intangible assets, net 22,748 34,044
Acquired Technology [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Acquired technology (refer to Note 6) 10,133 10,133
Less: accumulated amortization (2,451) (763)
Less: impairment of technology (refer to Note 7) (7,045) 0
Less: technology reclassified to assets held for sale (refer to Note 7) (637) 0
Finite lived intangible assets Net 0 9,370
Weighted average amortization period (years) 6 years  
Patents [Member]
   
Finite-Lived Intangible Assets [Line Items]    
Less: accumulated amortization (5,465) (2,020)
Patents 28,213 26,694
Finite lived intangible assets Net $ 22,748 $ 24,674
Weighted average amortization period (years) 8 years 3 months 18 days