Service Agreements and Related Party Transactions - Additional Information (Detail) (USD $)	6 Months Ended
	Sep. 30, 2012	Mar. 19, 2012
Related Party Transaction [Line Items]
Expenses incurred under the agreements	$ 1,050,000
Description of Fee		Fee equal to the product of (x) the ending dollar amount of assets under management during the calendar month in question and (y) .002 divided by 12
Administrative services agreement fee		$ 110,000