Income Taxes - Additional Information (Detail) (USD $)	9 Months Ended
	Dec. 31, 2012	Aug. 31, 2012	Mar. 02, 2010
Schedule Of Income Taxes [Line Items]
Tax net operating loss can be carried forward	20 years
Extraordinary dividend declared			$ 1.10
Company's assertion as to the percent of the dividend that is taxable to the recipient			4.90%
Internal Revenue Service's assertion as to the percent of the dividend that is taxable to the recipient, which the company is refuting		100.00%