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Stock-Based Compensation (Tables) | 12 Months Ended
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Mar. 31, 2018
Stock-Based Compensation [Abstract] |
Assumptions used in determining fair value of options | The Company estimated the fair value of option awards on the date of grant using the Black-Scholes option valuation model and the following assumptions:
|  | Years ended March 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Fair value of options |  | $ | 7.30 |  |  | $ | 4.60 |  |  | $ | 7.11 |
Expected life of awards in years |  |  | 6.4 |  |  |  | 6.4 |  |  |  | 6.3 |
Risk-free interest rate |  |  | 1.9 | % |  |  | 1.4 | % |  |  | 1.9 | %
Expected volatility of the Company's stock |  |  | 44.3 | % |  |  | 45.5 | % |  |  | 66.9 | %
Expected dividend yield on the Company's stock |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | %
Summary of the stock option activity | A summary of stock option activity for fiscal 2018 was as follows:
|  | Shares |  |  | Weighted-average exercise price |  |  | Weighted-average remaining contractual term (years) |  |  | Aggregate intrinsic value |
Outstanding, beginning |  |  | 1.5 |  |  | $ | 9.83 |  |  |  |  |  |  |
Granted |  |  | 0.2 |  |  |  | 15.90 |  |  |  |  |  |  |
Exercised |  |  | (0.4 | ) |  |  | 8.89 |  |  |  |  |  |  |
Forfeited or expired |  |  | (0.1 | ) |  |  | 12.64 |  |  |  |  |  |  |
Outstanding, ending |  |  | 1.2 |  |  | $ | 11.16 |  |  |  | 6.1 |  |  | $ | 12.2 |
Exercisable, March 31, 2018 |  |  | 0.7 |  |  | $ | 9.99 |  |  |  | 4.6 |  |  | $ | 8.0 |
Information related to stock options exercised | Additional information related to stock options exercised is as follows:
|  | Years ended March 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Intrinsic value of stock options exercised |  | $ | 4.9 |  |  | $ | 0.5 |  |  | $ | 0.4 |
Proceeds from stock options exercised |  | $ | 4.3 |  |  | $ | 0.9 |  |  | $ | 0.5 |
Summary of the restricted stock activity | A summary of restricted stock activity for fiscal 2018 was as follows:
|  | Shares |  |  | Weighted- average price |
Non-vested balance, beginning |  |  | 0.6 |  |  | $ | 11.21 |
Granted |  |  | 0.3 |  |  |  | 16.12 |
Vested |  |  | (0.3 | ) |  |  | 12.56 |
Non-vested balance, ending |  |  | 0.6 |  |  | $ | 12.24 |

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- Definition Tabular disclosure of cash received from exercise of stock options and similar instruments granted under share-based payment arrangements and tax benefit from exercise of stock options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=96867065&loc=SL79508275-113901 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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