Annual report pursuant to Section 13 and 15(d)

Stock Compensation Plans - Stock Option Awards (Detail)

v3.19.1
Stock Compensation Plans - Stock Option Awards (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Outstanding, Shares Under Option, Beginning Balance 69 83
Exercised, Shares Under Option (19) (13)
Cancelled, Shares Under Option (11) (1)
Outstanding, Shares Under Option, Ending Balance 39 69
Vested or expected to vest, Shares Under Option 39  
Exercisable, Shares Under Option 39  
Outstanding, Weighted Average Exercise Price, Beginning Balance $ 20.26 $ 19.03
Exercised, Weighted Average Exercise Price 15.89 11.45
Cancelled, Weighted Average Exercise Price 33.02 30.88
Outstanding, Weighted Average Exercise Price, Ending Balance 18.76 $ 20.26
Vested or expected to vest, Weighted Average Exercise Price 18.76  
Exercisable, Weighted Average Exercise Price $ 18.76  
Outstanding, Weighted Average Remaining Contractual Term, Ending Balance 2 years 11 months 26 days  
Vested or expected to vest, Weighted Average Remaining Contractual Term 2 years 11 months 26 days  
Exercisable, Weighted Average Remaining Contractual Term 2 years 11 months 26 days  
Outstanding, Aggregate Intrinsic Value, Ending Balance $ 39  
Vested or expected to vest, Aggregate Intrinsic Value 39  
Exercisable, Aggregate Intrinsic Value $ 39