Related Party Transactions	9 Months Ended
Related Party Transactions	Sep. 30, 2016
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions The Company engages Dr. Mark Kroll, a member of the Board of Directors, to provide consulting services. The expenses related to these services were approximately $14,000 and $44,000 for the three months ended September 30, 2016 and 2015, respectively, and $111,000 and $156,000 for the nine months ended September 30, 2016 and 2015, respectively. At September 30, 2016 and December 31, 2015, the Company had liabilities of approximately $3,000 and $31,000, respectively, related to these services. The Company subscribes to a mobile collaboration software suite co-founded and managed by Bret Taylor, a member of the Company's Board of Directors. The cost to license this software is approximately $30,000 per quarter, and as of September 30, 2016 and December 31, 2015 the Company had $80,800 and $36,000, respectively, of prepaid costs related to the license subscription. In connection with the acquisition of Tactical Safety Responses Limited (Note 15), the Company assumed a long-term non-cancellable operating lease for office space with the former owners, one of whom is an employee of the Company. The lease has a remaining contractual term of approximately five years and requires annual rental payments of approximately $25,000.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.