Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets (Details)

v3.7.0.1
Goodwill and Other Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended
Jan. 01, 2015
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Amortizable intangible assets        
Gross Carrying Amount   $ 24,724   $ 24,724
Accumulated Amortization   (16,972)   (16,128)
Net Carrying Amount   7,752   8,596
Amortization expense   843 $ 858  
Estimated future amortization expense        
Remainder of 2017   2,525    
2018   2,573    
2019   1,785    
2020   869    
Patents        
Amortizable intangible assets        
Gross Carrying Amount   10,823   10,823
Accumulated Amortization   (8,844)   (8,450)
Net Carrying Amount   1,979   2,373
Patents | Skyhook        
Amortizable intangible assets        
Useful life 3 years 6 months      
Tradename        
Amortizable intangible assets        
Gross Carrying Amount   2,838   2,838
Accumulated Amortization   (1,622)   (1,528)
Net Carrying Amount   1,216   1,310
Capitalized software        
Amortizable intangible assets        
Gross Carrying Amount   850   850
Accumulated Amortization   (725)   (710)
Net Carrying Amount   125   140
Capitalized software | Skyhook | Minimum        
Amortizable intangible assets        
Useful life 3 years      
Capitalized software | Skyhook | Maximum        
Amortizable intangible assets        
Useful life 5 years      
Customer relationships        
Amortizable intangible assets        
Gross Carrying Amount   10,213   10,213
Accumulated Amortization   (5,781)   (5,440)
Net Carrying Amount   $ 4,432   $ 4,773
Tradename and customer relationship | Skyhook        
Amortizable intangible assets        
Useful life 5 years 6 months