Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of identifiable intangible assets
Identifiable intangible assets are as follows (in thousands):
 
 
 
 
December 31, 2012
 
Estimated Useful 
Life
 
Gross
 
Accumulated
Amortization
 
Net
RaidCore technology
4 years
 
$
4,256

 
$
(4,256
)
 
$
—

Total intangible assets
 
 
$
4,256

 
$
(4,256
)
 
$
—

 
 
 
 
December 31, 2013
 
Estimated Useful
 Life
 
Gross
 
Accumulated
Amortization
 
Net
RaidCore technology
4 years
 
$
4,256

 
$
(4,256
)
 
$
—

Total intangible assets
 
 
$
4,256

 
$
(4,256
)
 
$
—