Earnings Per Share - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Repurchased Shares:
Repurchasing amount			$ 109,737	$ 0
Common Class A
Repurchased Shares:
Repurchased shares	28,227		41,446
Repurchasing amount	$ 72,528		$ 109,737
Common Class B
Repurchased Shares:
Repurchased shares			0
Common Class C
Repurchased Shares:
Repurchased shares			0
Stock Option
Antidilutive Securities Excluded from Computation of Earnings per Share [Line Items]
Options excluded from diluted EPS calculation	29,000	29,000	29,000	29,000