Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Thousands		6 Months Ended
	Dec. 14, 2016	Mar. 14, 2018	Mar. 15, 2017
Derivative [Line Items]
Derivative, constant notional amount	$ 17,500
Interest Rate Swap | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, constant notional amount	$ 17,500
Derivative, fixed interest rate	1.965%
Derivative, term of contract	5 years
Derivative, gain (loss) on derivative, net		$ 600	$ (45)