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Stock-Based Compensation | 12 Months Ended
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Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Compensation | 16. Stock-Based Compensation The Company maintains stock incentive plans whereby stock option grants or awards of restricted stock may be made to certain officers, directors and key employees. The plans, which are shareholder approved, permit the award of up to 1,650,000 shares of the Company’s common stock, of which 343,037 shares were still available for grant. When options are exercised, new shares of the Company’s common stock are issued. Stock options may not be granted below 100% of the fair market value of the Company’s common stock at the date of grant and generally expire seven years from the date of grant. Stock options and awards of restricted stock typically vest over a one to five year period as determined by the plan administrator (the Compensation Committee of the Board of Directors, which consists of independent directors). The stock incentive plans provide for accelerated vesting of stock options and removal of restrictions on restricted stock awards upon a change in control (as defined in the plans). The Company applies the fair value recognition provisions of ASC 718. Stock option compensation expense, including restricted stock, decreased income before income taxes by approximately $2.3 million, $2.1 million and $1.8 million for fiscal years 2018, 2017 and 2016, respectively. As of March 31, 2018, total unrecognized compensation cost related to stock options was approximately $3.4 million and the related weighted-average period over which it is expected to be recognized is approximately 3.01 years. The following table summarizes the option activity within the Company’s stock-based compensation plans for the fiscal years 2018, 2017 and 2016:
| Number of Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (years) |  | Aggregate Intrinsic Value (in thousands)
Options outstanding at March 28, 2015 | 506,980 |  |  | $ | 44.42 |  |  |  |  |
Granted | 90,500 |  |  | 75.27 |  |  |  |  |
Exercised | (104,500 | ) |  | 33.46 |  |  |  |  |
Canceled or expired | (1,000 | ) |  | 75.90 |  |  |  |  |
Options outstanding at April 2, 2016 | 491,980 |  |  | $ | 51.91 |  |  | 3.28 |  | $ | 35,906 |
Granted | 116,850 |  |  | 98.93 |  |  |  |  |
Exercised | (121,275 | ) |  | 30.02 |  |  |  |  |
Canceled or expired | (22,625 | ) |  | 80.21 |  |  |  |  |
Options outstanding at April 1, 2017 | 464,930 |  |  | $ | 68.01 |  |  | 3.83 |  | $ | 42,194 |
Granted | 42,000 |  |  | 131.93 |  |  |  |  |
Exercised | (87,925 | ) |  | 42.54 |  |  |  |  |
Canceled or expired | (800 | ) |  | 99.65 |  |  |  |  |
Options outstanding at March 31, 2018 | 418,205 |  |  | $ | 79.73 |  |  | 3.78 |  | $ | 60,439 |
Exercisable at April 2, 2016 | 320,975 |  |  | $ | 41.01 |  |  | 2.09 |  | $ | 24,786 |
Exercisable at April 1, 2017 | 244,025 |  |  | $ | 50.77 |  |  | 2.29 |  | $ | 23,626 |
Exercisable at March 31, 2018 | 203,721 |  |  | $ | 61.38 |  |  | 2.49 |  | $ | 30,631 |
The weighted-average estimated fair value of employee stock options granted during fiscal years 2018, 2017 and 2016 were $42.30, $35.55 and $27.83, respectively. The total intrinsic value of options exercised during fiscal years 2018, 2017 and 2016 was $7.7 million, $7.8 million and $4.9 million, respectively. The fair values of options granted were estimated at the date of grant using the following weighted average assumptions:
| Fiscal Year
| 2018 |  | 2017 |  | 2016
Volatility | 32.3 | % |  | 38.3 | % |  | 39.8 | %
Risk-free interest rate | 1.9 | % |  | 1.1 | % |  | 1.5 | %
Dividend yield | — | % |  | — | % |  | — | %
Expected option life in years | 5.14 |  |  | 5.24 |  |  | 5.03 |
Estimated forfeiture rate | 7.0 | % |  | 6.0 | % |  | 6.0 | %

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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