Fair Value Measurements - Recurring Fair Value Measurements Related to Assets (Details) - USD ($) $ in Thousands	4 Months Ended
	Dec. 19, 2018	Mar. 13, 2019	Aug. 29, 2018	Mar. 14, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total credit facility debt, less unamortized debt issuance costs		$ 40,674	$ 39,338
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - Interest Rate Swap, Asset		0		$ 361
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - Interest Rate Swap, Asset		0		0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - Interest Rate Swap, Asset		0		361
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative - Interest Rate Swap, Asset		$ 0		$ 0
Interest Rate Swap | Not Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Proceeds from termination of derivative instrument	$ 300