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Fair Value Measurements - Recurring Fair Value Measurements Related to Liabilities (Details) - Fair Value, Measurements, Recurring - USD ($)
Mar. 13, 2019
Mar. 14, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
TSR Performance Based Incentive Plan $ 0 $ 357,000
Total liabilities at Fair Value   357,000
Performance Shares | 2016 Performance Based Incentive Plan    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
TSR Performance Based Incentive Plan   200,000
Performance Shares | 2017 Performance Based Incentive Plan    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
TSR Performance Based Incentive Plan 0 100,000
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
TSR Performance Based Incentive Plan 0 0
Total liabilities at Fair Value   0
Significant Other Observable Inputs (Level 2)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
TSR Performance Based Incentive Plan 0 357,000
Total liabilities at Fair Value   357,000
Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
TSR Performance Based Incentive Plan $ 0 0
Total liabilities at Fair Value   $ 0