| Intangible Assets | 9 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Sep. 30, 2020 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Intangible Assets | 8. Intangible Assets 
 The following provides a breakdown of identifiable intangible assets as of September 30, 2020: 
 
 
 In connection with the acquisitions of Sports Defense, the Company identified intangible assets of $375 thousand representing technology related and customer related intangibles. These assets are being amortized on a straight-line basis over their weighted average estimated useful life of 3.1 years and amortization expense amounted to $39 thousand for the nine months ended September 30, 2020. 
 As of September 30, 2020, the estimated annual amortization expense for each of the next five fiscal years is as follows: 
 
 
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