Stock Options (Detail) - USD ($)	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Employee 2012 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year	112,500	112,500
Granted	0	0
Terminated/Lapsed	0	(15,000)
Exercised	0	0
Outstanding, end of year	112,500	97,500
Exercisable, end of year	60,700	29,500
Weighted average fair value at grant date of options granted
Total intrinsic value of options exercised
Total intrinsic value of options outstanding	186,000	69,000
Total intrinsic value of options exercisable	$ 100,000	$ 24,000
Outstanding, beginning of year, weighted average exercise price	$ 5.54	$ 5.3
Granted, weighted average exercise price	0	0
Terminated/Lapsed, weighted average exercise price	0	4.29
Exercised, weighted average exercise price	0	0
Outstanding, end of period, weighted average exercise price	5.54	5.46
Exercisable, end of period, weighted average exercise price	$ 5.55	$ 5.33
NonEmployee 2012 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year	35,000	35,000
Granted	0	0
Terminated/Lapsed	0	0
Exercised	0	0
Outstanding, end of year	35,000	35,000
Exercisable, end of year	24,000	17,000
Weighted average fair value at grant date of options granted
Total intrinsic value of options exercised
Total intrinsic value of options outstanding	86,000	46,000
Total intrinsic value of options exercisable	$ 57,000	$ 21,000
Outstanding, beginning of year, weighted average exercise price	$ 4.73	$ 4.73
Granted, weighted average exercise price	0	0
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	$ 4.8	$ 4.82
Employee Stock Option Plan 2002 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year	102,500	208,500
Granted	0	0
Terminated/Lapsed	0	0
Exercised	0	0
Outstanding, end of year	102,500	208,500
Exercisable, end of year	102,500	208,500
Weighted average fair value at grant date of options granted
Total intrinsic value of options exercised
Total intrinsic value of options outstanding	118,000	37,000
Total intrinsic value of options exercisable	$ 118,000	$ 37,000
Outstanding, beginning of year, weighted average exercise price	$ 6.86	$ 6.86
Granted, weighted average exercise price	0	0
Terminated/Lapsed, weighted average exercise price	0	0
Exercised, weighted average exercise price	0	0
Outstanding, end of period, weighted average exercise price	6.86	6.86
Exercisable, end of period, weighted average exercise price	$ 6.86	$ 6.86