Annual report pursuant to Section 13 and 15(d)

Purchase of Treasury Stock - Additional Information (Detail)

v3.19.1
Purchase of Treasury Stock - Additional Information (Detail) - USD ($)
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Jan. 29, 2015
Equity [Abstract]        
Stock repurchase program authorized amount       $ 18,000,000
Number of shares purchased during period 0 0 0