Earnings per Share (EPS) and Common Stock (Earnings per Share Basic and Diluted) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Earnings Per Share and Common Stock
Net loss	$ (9,141)	$ (23,892)
Weighted average shares outstanding—Basic (in shares)	115,290	114,151
Dilutive effect of employee stock options, restricted shares and restricted stock units (in shares)	0	0
Weighted average shares outstanding—Diluted (in shares)	115,290	114,151
Earnings(loss) per share—Basic (in USD per share)	$ (0.08)	$ (0.21)
Earnings(loss) per share—Diluted (in USD per share)	$ (0.08)	$ (0.21)