STOCKHOLDERS' EQUITY (Detail) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Jun. 30, 2015	Dec. 07, 2012	Dec. 10, 2014	Dec. 12, 2013
Stockholders Equity [Line Items]
Payments for repurchase of common stock			$ 266,000	$ 230,000
Number of options outstanding	22,000		22,000
Number of options exercisable	22,000		22,000
Weighted average exercise price, outstanding options (in dollars per share)	$ 18.72		$ 18.72
Weighted average exercise price, exercisable options (in dollars per share)	$ 18.72		$ 18.72
Number of options granted			0
Number of options exercised during period			0
Number of options, options forfeited			0
Stock-based compensation expense	0	(1,000)	0	1,000
Unrecognized share-based compensation cost	0	0	0	0
Common Class A
Stockholders Equity [Line Items]
Repurchased shares	19,245	35,065	86,250	76,511
Payments for repurchase of common stock	60,000	121,000	266,000	230,000
Share Repurchase Plan - December 2012
Stockholders Equity [Line Items]
Stock repurchase program, authorized amount						2,750,000.00
Share Repurchase Renewal, December 2013
Stockholders Equity [Line Items]
Stock repurchase program, authorized amount							$ 2,750,000.00	$ 2,750,000.00
Forecast
Stockholders Equity [Line Items]
Cash dividend declared monthly (per share)					$ 0.005