Shareholders' Equity (Tangible Equity Units Narrative) (Details) Tangible_Equity_Unit in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
	Jul. 02, 2016 USD ($) Tangible_Equity_Unit $ / per_TEU	Jun. 30, 2018
Debt Instrument [Line Items]
Issued tangible equity units (in tangible equity units) | Tangible_Equity_Unit	1,150
Tangible equity units, issued, net | $	$ 110,926
Fair value price per TEU (in dollars per tangible equity unit)	100
Tangible equity units senior amortizing note
Debt Instrument [Line Items]
Fair value price per TEU (in dollars per tangible equity unit)	100
Amortization period of costs		3 years