Shareholders' Equity - Issuance of Common Stock (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 02, 2016	Jun. 27, 2015
Class of Stock [Line Items]
Public offering	$ 79,695
Less: Underwriting discounts and commissions	(4,782)
Less: Other expenses	(612)
Issuance of common stock	74,301
Payments of stock issuance costs	175
Proceeds from issuance of common stock, net of issuance costs	74,738	$ 0
Common Stock [Member]
Class of Stock [Line Items]
Public offering	474
Issuance of common stock	474
Additional Paid-in Capital [Member]
Class of Stock [Line Items]
Public offering	79,221
Less: Underwriting discounts and commissions	(4,782)
Less: Other expenses	(612)
Issuance of common stock	$ 73,827