Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Intangible Assets (Details)

v3.6.0.2
Goodwill and Other Intangible Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Amortizable intangible assets      
Net Carrying Amount $ 8,596 $ 11,887  
Amortization expense 3,400 3,100 $ 6,500
Estimated future amortization expense      
2017 3,368    
2018 2,573    
2019 1,786    
2020 $ 869    
Minimum      
Amortizable intangible assets      
Useful life 3 years    
Maximum      
Amortizable intangible assets      
Useful life 5 years 6 months    
Skyhook      
Amortizable intangible assets      
Gross Carrying Amount $ 24,724 34,846  
Accumulated Amortization (16,128) (22,959)  
Net Carrying Amount 8,596 11,887  
Patents | Skyhook      
Amortizable intangible assets      
Gross Carrying Amount 10,823 10,823  
Accumulated Amortization (8,450) (6,872)  
Net Carrying Amount $ 2,373 3,951  
Patents | Skyhook | Minimum      
Amortizable intangible assets      
Useful life 3 years    
Patents | Skyhook | Maximum      
Amortizable intangible assets      
Useful life 3 years 6 months    
Tradename | Skyhook      
Amortizable intangible assets      
Gross Carrying Amount $ 2,838 2,838  
Accumulated Amortization (1,528) (1,154)  
Net Carrying Amount 1,310 1,684  
Capitalized software | Skyhook      
Amortizable intangible assets      
Gross Carrying Amount 850 10,973  
Accumulated Amortization (710) (10,857)  
Net Carrying Amount $ 140 116  
Capitalized software | Skyhook | Minimum      
Amortizable intangible assets      
Useful life 3 years    
Capitalized software | Skyhook | Maximum      
Amortizable intangible assets      
Useful life 5 years    
Customer relationships | Skyhook      
Amortizable intangible assets      
Gross Carrying Amount $ 10,213 10,212  
Accumulated Amortization (5,440) (4,076)  
Net Carrying Amount $ 4,773 $ 6,136  
Tradename and customer relationships [member] | Skyhook      
Amortizable intangible assets      
Useful life 5 years 6 months