Weighted Average Shares and Net Income Per Share - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Weighted average common shares outstanding, Basic	19,673,000	20,599,000	19,908,000	20,784,000
Weighted average diluted common and common equivalent shares	19,852,000	20,786,000	20,083,000	21,015,000