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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares available for future grants | 3,750,392 |  |
Stock options granted | 192,700 | 169,703 | 242,068
Stock-based compensation expense | $ 3,251 | $ 700 | $ 1,705
Stock-based compensation expense, net of tax | $ 634 | $ 2,741 | $ 457
Market price per unit of stock award | $ 75.32 | $ 73.39 | $ 65.88
Unrecognized compensation expense associated with non-vested incentive awards outstanding | $ 37,187 |  |
Nonvested stock, weighted average remaining contractual term | 20 months |  |
Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Market price per unit of stock award | $ 69.43 |  |
Stock unit grant during period | 241,105 |  |
Restricted Shares Restricted Stock Units and Market Share Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation expense | $ 19,357 | $ 16,712 | $ 17,480
Stock unit grant during period | 1,441 | 1,345 | 1,239
Equity-based compensation expense, tax benefit | $ 3,085 | $ 3,325 | $ 4,210
Non Employee Directors | Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Restricted stock units granted | 35,065 | 33,408 | 25,708
Market price per unit of stock award | $ 46.30 | $ 46.24 | $ 69.97
Management | Nonqualified Stock Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock options granted | 192,700 |  |
Vesting period, in years | 3 years |  |
Management | Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Market price per unit of stock award | $ 75.17 | $ 83.14 | $ 57.60
Stock unit grant during period | 204,599 | 161,229 | 237,358
Management | Performance Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Market price per unit of stock award | $ 68.48 |  |
Stock unit grant during period | 45,883 |  |
Management | Market Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Market price per unit of stock award | $ 86.23 | $ 105.74 | $ 70.79
Stock unit grant during period | 36,646 | 60,187 | 83,720
Equity Incentive Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares available for future grants | 4,173,554 |  |
Stock Options Issued In Fiscal 2010 | Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options expiration period (in years) | 10 years |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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