PRESENTATION OF FINANCIAL INFORMATION - Earning Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 31, 2013	Apr. 01, 2012
BASIC
Net income (loss)	$ (2,905)	$ (4,792)	$ 11,309	$ (49,394)
Weighted-average common shares outstanding	89,405	85,645	88,970	85,435
Basic earnings (loss) per share	$ (0.03)	$ (0.06)	$ 0.13	$ (0.58)
DILUTED
Net income (loss)	$ (2,905)	$ (4,792)	$ 11,309	$ (49,394)
Weighted-average common shares outstanding	89,405	85,645	88,970	85,435
Dilutive effect of stock awards	0	0	1,568	0
Weighted-average common shares outstanding on a diluted basis	89,405	85,645	90,538	85,435
Diluted earnings (loss) per share	$ (0.03)	$ (0.06)	$ 0.12	$ (0.58)