Stock Options (Detail) - USD ($)	9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Employee 2012 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year	112,500	78,500
Granted	0	44,000
Terminated/Lapsed	(15,000)	(10,000)
Exercised	0	0
Outstanding, end of period	97,500	112,500
Exercisable, end of period	52,700	27,500
Weighted average fair value at grant date of options granted		$ 2.82
Total intrinsic value of options exercised
Total intrinsic value of options outstanding	$ 80,000	$ 78,000
Total intrinsic value of options exercisable	$ 38,000	$ 19,000
Outstanding, beginning of year, weighted average exercise price	$ 5.30	$ 5.73
Granted, weighted average exercise price	0	4.43
Terminated/Lapsed, weighted average exercise price	4.29	4.88
Exercised, weighted average exercise price	0	0
Outstanding, end of period, weighted average exercise price	5.46	5.30
Exercisable, end of period, weighted average exercise price	$ 5.56	$ 5.26
NonEmployee 2012 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year	35,000	25,000
Granted	0	10,000
Terminated/Lapsed	0	0
Exercised	0	0
Outstanding, end of period	35,000	35,000
Exercisable, end of period	19,000	12,000
Weighted average fair value at grant date of options granted		$ 2.86
Total intrinsic value of options exercised
Total intrinsic value of options outstanding	$ 53,000	$ 37,000
Total intrinsic value of options exercisable	$ 28,000	$ 12,000
Outstanding, beginning of year, weighted average exercise price	$ 4.73	$ 4.88
Granted, weighted average exercise price	0	4.37
Terminated/Lapsed, weighted average exercise price	0	0
Exercised, weighted average exercise price	0	0
Outstanding, end of period, weighted average exercise price	4.73	4.73
Exercisable, end of period, weighted average exercise price	$ 4.77	$ 4.80
Employee Stock Option Plan 2002 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year	208,500	265,750
Granted	0	0
Terminated/Lapsed	(38,500)	(57,250)
Exercised	(67,500)	0
Outstanding, end of period	102,500	208,500
Exercisable, end of period	102,500	208,500
Weighted average fair value at grant date of options granted
Total intrinsic value of options exercised	$ 98,000
Total intrinsic value of options outstanding	31,000	$ 10,000
Total intrinsic value of options exercisable	$ 31,000	$ 10,000
Outstanding, beginning of year, weighted average exercise price	$ 6.86	$ 6.51
Granted, weighted average exercise price	0	0
Terminated/Lapsed, weighted average exercise price	11.03	5.24
Exercised, weighted average exercise price	5.73	0
Outstanding, end of period, weighted average exercise price	6.04	6.86
Exercisable, end of period, weighted average exercise price	$ 6.04	$ 6.86