Quarterly report pursuant to Section 13 or 15(d)

Restructuring Charges - Summary of Restructuring Charges (Details)

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Restructuring Charges - Summary of Restructuring Charges (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Restructuring and Related Activities [Abstract]        
Restructuring charges $ 51 $ 402 $ 969 $ 402
Change in activity of restructuring reserves during the period        
Restructuring Charges 51 402 969 402
2013 Restructuring Plan | Severance and retention
       
Restructuring and Related Activities [Abstract]        
Restructuring charges 51 402 969 402
Change in activity of restructuring reserves during the period        
Opening balance     1,570 0
Restructuring Charges 51 402 969 402
Payments     (2,271) 0
Other     0 492 [1]
Ending balance $ 268 $ 894 $ 268 $ 894
[1] Amount was recorded upon the acquisition of Security Networks.