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v3.23.1

Revenue and Deferred Revenue (Tables) | 3 Months Ended
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Mar. 31, 2023
Revenue and Deferred Revenue |
Summary of deferred revenue | ​
​ | ​ | ​ | ​
​ |  | March 31, 2023
Deferred revenue - short term | ​ | $ | 2,386
Revenue recognized in the three months ended related to amounts included in deferred revenue as of January 1, 2023 | ​ | $ | 638
​
Summary of revenue by timing of recognition | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31,
​ | ​ | 2023 | ​ | 2022
​ |  | Point in time |  | Over time |  | Total |  | Point in time |  | Over time |  | Total
ASRs | ​ | $ | 20 | ​ | $ | 1,002 | ​ | $ | 1,022 | ​ | $ | 15 | ​ | $ | 929 | ​ | $ | 944
Blue light Towers, ephones and Call Boxes | ​ | ​ | 1,787 | ​ | ​ | 88 | ​ | ​ | 1,875 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Total | ​ | $ | 1,807 | ​ | $ | 1,090 | ​ | $ | 2,897 | ​ | $ | 15 | ​ | $ | 929 | ​ | $ | 944
​

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 + Details
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