Weighted Average Shares and Net Income Per Share - Additional Information (Detail)	3 Months Ended			9 Months Ended
	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share [Abstract]
Weighted average common shares outstanding, Basic	20,936,000		22,234,000	21,157,000	22,466,000
Weighted average diluted common and common equivalent shares	21,256,000		22,426,000	21,406,000	22,676,000
Stock split ratio		2
Stock dividend percentage		100.00%
Stock dividend distribution date		Jun. 26, 2013
Stock dividend recording date		Jun. 12, 2013