Shareholders' Equity - Additional Information (Detail)	9 Months Ended
	Dec. 31, 2016 USD ($) shares
Equity Class Of Treasury Stock [Line Items]
Options outstanding	0
Warrants outstanding	0
Other potentially dilutive securities outstanding	0
Common Stock
Equity Class Of Treasury Stock [Line Items]
Number of common stock shares repurchased	18,600
Common Stock | Maximum
Equity Class Of Treasury Stock [Line Items]
Common stock shares repurchase amount | $	$ 5,000,000