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CAPITAL STOCK (Tables)
12 Months Ended
Apr. 03, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Stock-Based Compensation Cost Compensation cost related to share-based transactions is recognized in the consolidated financial statements based on fair value. The total amount of share-based compensation expense, which is recorded on a straight line basis, is as follows:
(In thousands)202120202019
Selling, general and administrative expenses$22,888$18,022$12,878
Research and development1,874 1,210 2,972 
Cost of goods sold754 1,222 1,338 
$25,516$20,454$17,188
Schedule of Summary of Stock Option Activity
A summary of stock option activity for the fiscal year ended April 3, 2021 is as follows:
Options
Outstanding
Weighted
Average
Exercise Price
per Share
Weighted
Average
Remaining
Life (years)
Aggregate
Intrinsic
Value
($000’s)
Outstanding at March 28, 2020918,988 $60.43 4.30$37,471 
Granted205,846 103.36   
Exercised(128,302)48.76   
Forfeited/Canceled(35,845)81.66   
Outstanding at April 3, 2021960,687 $70.29 4.04$40,179 
Exercisable at April 3, 2021472,527 $47.74 2.94$30,402 
Vested or expected to vest at April 3, 2021893,212 $68.08 3.42$39,325 
Schedule of Assumptions Utilized for Estimating Fair Value of Option Grants
The assumptions utilized for option grants during the periods presented are as follows:
202120202019
Volatility33.5 %28.2 %26.1 %
Expected life (years)4.94.94.9
Risk-free interest rate0.4 %2.5 %2.8 %
Dividend yield0.0 %0.0 %0.0 %
Grant-date fair value per Option$30.53$28.25$26.67
Schedule of Assumptions Used, Other than Options
The weighted average rates used to determine the net periodic benefit costs and projected benefit obligations were as follows:
202120202019
Discount rate0.58 %0.82 %0.97 %
Rate of increased salary levels1.64 %1.74 %1.78 %
Expected long-term rate of return on assets0.42 %0.31 %0.75 %
The weighted-average grant-date fair value of RSUs granted and total fair value of RSUs vested are as follows:
202120202019
Grant-date fair value per RSU$102.19 $102.32 $94.55 
Fair value of RSUs vested$66.87 $54.58 $40.04 
The assumptions used in the Monte Carlo model for PSUs granted during each fiscal year were as follows:
202120202019
Expected stock price volatility36.79 %28.64 %27.07 %
Peer group stock price volatility42.31 %29.77 %34.98 %
Correlation of returns65.12 %50.30 %47.57 %

The weighted-average grant-date fair value of PSUs granted and total fair value of PSUs vested are as follows:
202120202019
Grant-date fair value per PSU$123.92 $146.93 $115.64 
Fair value of PSUs vested$47.43 $34.78 $29.20 
The fair values of shares purchased under the Employee Stock Purchase Plan are estimated using the Black-Scholes single option-pricing model with the following weighted average assumptions:
202120202019
Volatility49.8 %34.7 %30.0 %
Expected life (months)666
Risk-free interest rate0.1 %2.0 %2.3 %
Dividend Yield0.0 %0.0 %0.0 %
Schedule of Summary of Restricted Stock Units Activity
A summary of RSU activity for the fiscal year ended April 3, 2021 is as follows:
SharesWeighted
Average
Grant Date Fair Value
Unvested at March 28, 2020268,217 $75.34 
Granted116,296 102.19 
Vested(119,692)66.87 
Forfeited(16,358)85.08 
Unvested at April 3, 2021248,463 $91.25 
Schedule of Performance Share Unit awards
A summary of PSU activity for the fiscal year ended April 3, 2021 is as follows:
SharesWeighted
Average
Grant Date Fair Value
Unvested at March 28, 2020293,111 $95.17 
Granted(1)
216,668 123.92 
Vested(2)
(254,340)47.43 
Forfeited(14,548)121.76 
Unvested at April 3, 2021240,891 $129.24 
(1) Includes 127,170 shares issued for awards vested during fiscal 2021 based on achievement of performance metrics.
(2) Includes the vesting of 254,340 shares that were earned for awards granted in fiscal 2018 for various performance periods ending during fiscal 2021, based on actual relative total shareholder return of 200%.