Revenues - Deferred Revenue (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Current	$ 612,955	$ 493,637	$ 470,415
Long-Term	360,685	$ 282,796	270,901
Total	973,640		741,316	$ 593,038
TASER
Disaggregation of Revenue [Line Items]
Current	74,937		58,343
Long-Term	60,538		52,500
Total	135,475		110,843
Software and Sensors
Disaggregation of Revenue [Line Items]
Current	538,018		412,072
Long-Term	300,147		218,401
Total	838,165		630,473
Warranty:
Disaggregation of Revenue [Line Items]
Current	52,949		37,308
Long-Term	38,994		26,993
Total	91,943		64,301
Warranty: | TASER
Disaggregation of Revenue [Line Items]
Current	16,107		14,666
Long-Term	19,288		18,828
Total	35,395		33,494
Warranty: | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	36,842		22,642
Long-Term	19,706		8,165
Total	56,548		30,807
Hardware:
Disaggregation of Revenue [Line Items]
Current	139,187		99,144
Long-Term	179,307		146,713
Total	318,494		245,857
Hardware: | TASER
Disaggregation of Revenue [Line Items]
Current	49,195		35,845
Long-Term	35,116		29,689
Total	84,311		65,534
Hardware: | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	89,992		63,299
Long-Term	144,191		117,024
Total	234,183		180,323
Services:
Disaggregation of Revenue [Line Items]
Current	420,819		333,963
Long-Term	142,384		97,195
Total	563,203		431,158
Services: | TASER
Disaggregation of Revenue [Line Items]
Current	9,635		7,832
Long-Term	6,134		3,983
Total	15,769		11,815
Services: | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	411,184		326,131
Long-Term	136,250		93,212
Total	$ 547,434		$ 419,343