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Stock-Based Compensation (Tables) | 12 Months Ended
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Mar. 31, 2015
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:
|  | 2015 |  |  | 2014 |  |  | 2013 |
Weighted average fair value of options |  | $ | 10.21 |  |  | $ | 7.76 |  |  | $ | 4.26 |
Expected life of awards in years |  |  | 6.3 |  |  |  | 6.3 |  |  |  | 6.3 |
Risk-free interest rate |  |  | 2.1 | % |  |  | 1.3 | % |  |  | 0.9 | %
Expected volatility of the Company's stock |  |  | 76.1 | % |  |  | 88.7 | % |  |  | 87.4 | %
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 2015 was as follows:
|  | Shares |  |  | Weighted average exercise price |  |  | Weighted average remaining contractual term (years) |  |  | Aggregate intrinsic value |
Outstanding, beginning |  |  | 1.6 |  |  | $ | 13.15 |  |  |  |  |  |  |
Granted |  |  | 0.1 |  |  |  | 14.94 |  |  |  |  |  |  |
Exercised |  |  | (0.1 | ) |  |  | 8.71 |  |  |  |  |  |  |
Forfeited or expired |  |  | (0.1 | ) |  |  | 29.41 |  |  |  |  |  |  |
Outstanding, ending |  |  | 1.5 |  |  | $ | 11.99 |  |  |  | 5.3 |  |  | $ | 5.7 |
Exercisable, March 31, 2015 |  |  | 1.2 |  |  | $ | 12.13 |  |  |  | 4.5 |  |  | $ | 4.9 |
Information related to stock options exercised | Additional information related to stock options exercised during fiscal 2015, 2014, and 2013 was as follows:
|  | 2015 |  |  | 2014 |  |  | 2013 |
Intrinsic value of stock options exercised |  | $ | 0.4 |  |  | $ | 1.1 |  |  | $ | 0.1 |
Proceeds from stock options exercised |  | $ | 0.6 |  |  | $ | 1.1 |  |  | $ | 0.1 |
Summary of the restricted stock activity | A summary of restricted stock activity for fiscal 2015 was as follows:
|  | Shares |  |  | Weighted average price |
Non-vested balance, beginning |  |  | 0.6 |  |  | $ | 8.66 |
Granted |  |  | 0.3 |  |  |  | 14.92 |
Vested |  |  | (0.2 | ) |  |  | 9.73 |
Non-vested balance, ending |  |  | 0.7 |  |  | $ | 10.68 |

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- Definition Tabular disclosure of the amount of cash proceeds received from the exercise of stock options and similar instruments granted under share-based payment arrangements and the tax benefit realized from stock options exercised during the period. Disclosure may also include the intrinsic value of stock options exercised during the period. + 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 (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + 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=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&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=6415400&loc=d3e5070-113901 + Details
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