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Stock Compensation Plans - Additional Information (Detail) - shares
1 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2016
2008-2010 Cycle (Cycle VIII) [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Percentage of target dollar value of the award converted to a number of notional shares       50.00%
Long-Term Incentive Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Target payout percentage, cash       50.00%
Target payout percentage, stock       50.00%
Vesting period, in years       3 years
2010-2012 Cycle [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares of common stock issued   73,134 90,062  
2010 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares authorized for issuance       1,500,000
Shares remaining available for issuance       1,552,694
Shares subject to outstanding awards       853,746
Shares remaining available for future awards       2,715,923
RSU's [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period, in years       3 years
Each twelve-month period [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage       25.00%
Full three-year period [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting percentage       25.00%
Forecast [Member] | Two Thousand Fourteen To Two Thousand Sixteen Cycle [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares of common stock issued 47,267