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v3.19.3.a.u2

Stock-Based Compensation (Performance Stock Units) (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 31, 2019 | Jul. 30, 2019 | Mar. 31, 2019 | Jul. 31, 2018 | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Unvested activity |  |  |  |  |  |  |  |  |  |
Nonvested at the beginning of the period (in shares) |  |  |  |  |  |  | 494,882 | 494,882 |  |
Granted (in shares) |  |  |  |  |  |  |  | 277,307 |  |
Forfeited (in shares) |  |  |  |  |  |  |  | (70,391) |  |
Cancellations (in shares) |  |  |  |  |  |  |  | (22,977) |  |
Nonvested at the end of the period (in shares) |  |  |  |  |  |  |  | 465,584 | 494,882 |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment awary, Non-Option Equity Instruments, Cancellations |  |  |  |  |  |  |  | 236,214 |  |
Performance Stock Units |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Performance period |  |  |  |  |  |  | 3 years |  |  |
Fair value assumptions |  |  |  |  |  |  |  |  |  |
Risk-free interest rate (as a percent) | 1.57% | 1.75% | 2.48% | 2.69% | 2.36% | 1.54% |  |  |  |
Dividend yield (as a percent) | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |  |  |  |
Expected Life (Years) | 2 years 4 months 28 days | 2 years 6 months | 2 years 9 months 25 days | 2 years 5 months 1 day | 2 years 9 months 29 days | 2 years 9 months 29 days |  |  |  |
Volatility | 34.90% | 34.30% | 33.80% | 33.10% | 34.70% | 34.20% |  |  |  |
Fair value of award (in dollars per share) | $ 23.38 | $ 40.07 | $ 29.04 | $ 39.06 | $ 29.56 | $ 17.05 |  | $ 28.51 |  |
Recognized stock-based compensation expense |  |  |  |  |  |  |  | $ 5.1 | $ 4.3 | $ 3.2
Unrecognized stock-based compensation expense |  |  |  |  |  |  |  | $ 6.5 |  |
Unrecognized stock-based compensation expense, period of recognition |  |  |  |  |  |  |  | 1 year 8 months 12 days |  |
Unvested activity |  |  |  |  |  |  |  |  |  |
Granted (in shares) | 38,006 | 6,189 | 233,112 | 6,742 | 233,266 | 286,251 |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  |  |  |
Nonvested at the beginning of the period (in dollars per share) |  |  |  |  |  |  | $ 23.13 | $ 23.13 |  |
Granted (in dollars per share) | $ 23.38 | $ 40.07 | $ 29.04 | $ 39.06 | $ 29.56 | $ 17.05 |  | 28.51 |  |
Forfeited (in dollars per share) |  |  |  |  |  |  |  | 26.23 |  |
Cancellations (in dollars per share) |  |  |  |  |  |  |  | 17.05 |  |
Nonvested at the end of the period (in dollars per share) |  |  |  |  |  |  |  | $ 28.95 | $ 23.13 |
Shares expected to be issued (in shares) |  |  |  |  |  |  |  | 472,428 |  |
Performance Stock Units | Minimum |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Payout of PSUs (percent of initial grant) |  |  |  |  |  |  |  | 0.00% |  |
Performance Stock Units | Maximum |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Payout of PSUs (percent of initial grant) |  |  |  |  |  |  |  | 200.00% |  |

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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=116856206&loc=d3e5070-113901 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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