Revenues - Schedule Of Contract Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Current	$ 165,086	$ 163,959
Long-Term	116,107	111,222
Total	281,193	275,181
TASER
Disaggregation of Revenue [Line Items]
Current	27,510	28,945
Long-Term	33,507	32,811
Total	61,017	61,756
Software and Sensors
Disaggregation of Revenue [Line Items]
Current	137,576	135,014
Long-Term	82,600	78,411
Total	220,176	213,425
Warranty
Disaggregation of Revenue [Line Items]
Current	24,933	25,561
Long-Term	21,808	21,978
Total	46,741	47,539
Warranty | TASER
Disaggregation of Revenue [Line Items]
Current	10,501	11,635
Long-Term	16,486	16,953
Total	26,987	28,588
Warranty | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	14,432	13,926
Long-Term	5,322	5,025
Total	19,754	18,951
Hardware
Disaggregation of Revenue [Line Items]
Current	39,763	41,495
Long-Term	66,289	65,285
Total	106,052	106,780
Hardware | TASER
Disaggregation of Revenue [Line Items]
Current	16,040	16,314
Long-Term	15,024	14,304
Total	31,064	30,618
Hardware | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	23,723	25,181
Long-Term	51,265	50,981
Total	74,988	76,162
Software and Sensors
Disaggregation of Revenue [Line Items]
Current	100,390	96,903
Long-Term	28,010	23,959
Total	128,400	120,862
Software and Sensors | TASER
Disaggregation of Revenue [Line Items]
Current	969	996
Long-Term	1,997	1,554
Total	2,966	2,550
Software and Sensors | Software and Sensors
Disaggregation of Revenue [Line Items]
Current	99,421	95,907
Long-Term	26,013	22,405
Total	$ 125,434	$ 118,312