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Stock-Based Compensation - Stock Options and Significant Valuation Assumptions (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
May 20, 2019
Mar. 28, 2020
Mar. 30, 2019
Mar. 31, 2018
Stock Options        
Assumptions used        
Expected option term     5 years 3 months 18 days 5 years 6 months
Expected volatility factor, minimum   35.30% 36.10% 34.00%
Expected volatility factor, maximum   38.10% 37.70% 35.50%
Risk-free interest rate, minimum   0.50% 2.20% 1.80%
Risk-free interest rate, maximum   2.30% 2.80% 2.70%
Expected annual dividend yield   0.00% 0.00% 0.00%
Stock Options        
Outstanding at the beginning of period   1,293,347    
Granted   354,225    
Exercised   (404,583)    
Canceled, forfeited or expired   (21,766)    
Outstanding at the end of period   1,221,223 1,293,347  
Vested and expected to vest after end of period   1,221,223    
Exercisable at end of period   289,966    
Grant Date Weighted-Average Exercise Price        
Outstanding at the beginning of period   $ 15.40    
Granted   28.36    
Exercise price (in dollars per share)   12.86    
Canceled, forfeited or expired   17.76    
Outstanding at the end of period   19.96 $ 15.40  
Vested and expected to vest at end of period   19.96    
Exercisable at end of period   $ 20.60    
Weighted Average Remaining Contractual Life        
Weighted average remaining contractual life, awards outstanding   6 years 1 month 6 days    
Weighted average remaining contractual life, awards vested and expected to vest   6 years 1 month 6 days    
Weighted average remaining contractual life, awards exercisable   3 years 10 months 24 days    
Aggregate Intrinsic Value        
Aggregate intrinsic value, awards exercised   $ 9,922    
Aggregate intrinsic value, awards outstanding   2,465    
Aggregate intrinsic value, awards vested and expected to vest   2,465    
Aggregate intrinsic value, awards exercisable   $ 309    
Minimum | Stock Options        
Assumptions used        
Expected option term   6 years 3 months 18 days    
Maximum | Stock Options        
Assumptions used        
Expected option term   7 years    
CEO | 2014 Plan        
Assumptions used        
Stock price (in dollars per share) $ 28.63      
Exercise price (in dollars per share) $ 28.63      
Expected option term 7 years      
Expected volatility factor 35.30%      
Risk-free interest rate 2.30%      
Expected annual dividend yield 0.00%      
Stock Options        
Granted 227,273