Stockholders' Equity - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended
	Dec. 07, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Common Class A	Mar. 31, 2013 Common Class A	Mar. 31, 2014 Common Class A	Mar. 31, 2013 Common Class A	Jun. 30, 2014 Forecast
Stockholders Equity [Line Items]
Cash dividend declared monthly (per share)										$ 0.005
Stock repurchase program, authorized amount	$ 2,750,000.00			$ 2,750,000.00
Repurchased shares						35,065	22,203	76,511	22,203
Payments for repurchase of common stock				230,347	84,983	120,610	84,983	230,347	84,983
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)		$ 18.42		$ 18.42
Number of options, options forfeited				7,000
Stock-based compensation expense		(813)	610	407	8,930
Unrecognized share-based compensation cost		$ 0	$ 8,337	$ 0	$ 8,337