Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangible Assets (Details)

v3.8.0.1
Goodwill and Other Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 01, 2015
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Non-amortizable intangible assets            
Goodwill increase (decrease)       $ 0    
Amortizable intangible assets            
Gross Carrying Amount   $ 24,731   24,731   $ 24,724
Accumulated Amortization   (18,668)   (18,668)   (16,128)
Net Carrying Amount   6,063   6,063   8,596
Amortization expense   842 $ 850 2,500 $ 2,600  
Estimated future amortization expense            
Remainder of 2017   841   841    
2018   2,575   2,575    
2019   1,776   1,776    
2020   871   871    
Patents            
Amortizable intangible assets            
Gross Carrying Amount   10,823   10,823   10,823
Accumulated Amortization   (9,633)   (9,633)   (8,450)
Net Carrying Amount   1,190   1,190   2,373
Patents | Skyhook            
Amortizable intangible assets            
Useful life 3 years 6 months          
Tradename            
Amortizable intangible assets            
Gross Carrying Amount   2,838   2,838   2,838
Accumulated Amortization   (1,809)   (1,809)   (1,528)
Net Carrying Amount   1,029   1,029   1,310
Capitalized software            
Amortizable intangible assets            
Gross Carrying Amount   857   857   850
Accumulated Amortization   (763)   (763)   (710)
Net Carrying Amount   94   94   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   10,213
Accumulated Amortization   (6,463)   (6,463)   (5,440)
Net Carrying Amount   $ 3,750   $ 3,750   $ 4,773
Tradename and customer relationship | Skyhook            
Amortizable intangible assets            
Useful life 5 years 6 months