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Revenues - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Unbilled accounts receivable | $ 19,700 |  |  |  |  |  |  |  | $ 19,700 |  |
Payment due date from date of invoice |  |  |  |  |  |  |  |  | 30 days |  |
Net sales | $ 171,851 | $ 130,837 | $ 112,362 | $ 115,810 | $ 114,791 | $ 104,836 | $ 99,226 | $ 101,215 | $ 530,860 | $ 420,068 | $ 343,798
Taser 60 Plan |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 39,300 | 48,200 | 40,700
Interest income |  |  |  |  |  |  |  |  | 1,600 | 1,300 | $ 700
Sales, general and administrative expenses |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amortization related to deferred commissions |  |  |  |  |  |  |  |  | $ 8,200 | $ 5,300 |
Minimum |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, remaining performance obligation to be recognized in the next twelve months, percent | 20.00% |  |  |  |  |  |  |  | 20.00% |  |
Maximum |  |  |  |  |  |  |  |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue, remaining performance obligation to be recognized in the next twelve months, percent | 25.00% |  |  |  |  |  |  |  | 25.00% |  |

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