Contingencies And Commitments - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
	Mar. 31, 2013	Mar. 31, 2013
Contingencies And Commitments [Line Items]
Monthly dividend Declared	$ 0.005	$ 0.005
Amount of cash dividends to be paid to class A and class C shareholders		$ 232,371