Stock Options - Exercise Price Range (Details)	6 Months Ended
Stock Options - Exercise Price Range (Details)	Dec. 31, 2024 $ / shares shares
2012 Employee Stock Option Plan
Share based compensation, exercise prices
Options outstanding (in shares) \| shares	361,036
Weighted average remaining contractual life	6 years 7 months 24 days
Weighted average exercise price	$ 21.44
Number exercisable \| shares	265,660
Exercisable, Weighted average exercise price	$ 21.36
2012 Employee Stock Option Plan \| Exercise price range
Share based compensation, exercise prices
Exercise price upper limit	26.94
Exercise price lower limit	$ 10.02
2012 Non-Employee Stock Option Plan
Share based compensation, exercise prices
Options outstanding (in shares) \| shares	20,400
Weighted average remaining contractual life	5 years 1 month 20 days
Weighted average exercise price	$ 14.39
Number exercisable \| shares	18,480
Exercisable, Weighted average exercise price	$ 13.5
2012 Non-Employee Stock Option Plan \| Exercise price range
Share based compensation, exercise prices
Exercise price upper limit	22.93
Exercise price lower limit	$ 4.35
2018 Non-Employee Stock Option Plan
Share based compensation, exercise prices
Options outstanding (in shares) \| shares	64,900
Weighted average remaining contractual life	5 years 1 month 6 days
Weighted average exercise price	$ 14.02
Number exercisable \| shares	62,200
Exercisable, Weighted average exercise price	$ 13.63
2018 Non-Employee Stock Option Plan \| Exercise price range
Share based compensation, exercise prices
Exercise price upper limit	22.93
Exercise price lower limit	$ 8.1
2020 Non-Employee Stock Option Plan
Share based compensation, exercise prices
Options outstanding (in shares) \| shares	51,900
Weighted average remaining contractual life	7 years 10 days
Weighted average exercise price	$ 23
Number exercisable \| shares	37,520
Exercisable, Weighted average exercise price	$ 21.55
2020 Non-Employee Stock Option Plan \| Exercise price range
Share based compensation, exercise prices
Exercise price upper limit	30.71
Exercise price lower limit	$ 11.4
2022 Employee Stock Option Plan
Share based compensation, exercise prices
Options outstanding (in shares) \| shares	130,000
Weighted average remaining contractual life	9 years 3 months 18 days
Weighted average exercise price	$ 41.38
Number exercisable \| shares	28,000
Exercisable, Weighted average exercise price	$ 39.96
2022 Employee Stock Option Plan \| Exercise price range
Share based compensation, exercise prices
Exercise price upper limit	49.39
Exercise price lower limit	$ 21.6

NAPCO SECURITY TECHNOLOGIES, INC 10-Q