Stock Repurchases (Narrative) (Detail) - USD ($)		9 Months Ended
		Dec. 31, 2016	Mar. 31, 2016
February 2015
Stock repurchased and retired during period, shares		0
Stock repurchased and retired during period, value	[1]	$ 0
Stock repurchased, weighted average price per share		$ 0
Stock repurchase program, authorized amount			$ 20,000,000
Stock repurchase program expiration date		Oct. 20, 2016
October 2015
Stock repurchase program, authorized amount		$ 15,000,000

[1] Amount excludes commission fees.