Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Numerator:
Numerator for basic and diluted earnings per share from continuing operations - loss from continuing operations									$ (26,429)	$ (133,932)	$ (21,080)
Numerator for basic and diluted earnings per share from discontinued operations - loss from discontinued operations, net of income taxes									(35,819)	(95,989)	(28,402)
Net loss	$ (4,906)	$ (13,036)	$ (20,558)	$ (23,748)	$ (46,732)	$ (6,348)	$ (156,154)	$ (20,687)	$ (62,248)	$ (229,921)	$ (49,482)
Denominator:
Denominator for basic earnings per share - weighted-average shares outstanding (in shares)									60,894	60,440	59,973
Basic and diluted earnings (loss) per share from continuing operations (in dollars per share)									$ (0.43)	$ (2.21)	$ (0.35)
Basic and diluted loss per share from discontinued operations (in dollars per share)									$ (0.59)	$ (1.59)	$ (0.48)
Loss per share, basic and diluted, total (in dollars per share)	$ (0.08)	$ (0.21)	$ (0.34)	$ (0.39)	$ (0.77)	$ (0.10)	$ (2.58)	$ (0.34)	$ (1.02)	$ (3.80)	$ (0.83)
SARs
Statement
Anti-dilutive securities not considered in diluted EPS calculation (in shares)									2,962	2,842	2,662
Stock Options
Statement
Anti-dilutive securities not considered in diluted EPS calculation (in shares)									1,382	1,674	1,807
Restricted Stock
Statement
Anti-dilutive securities not considered in diluted EPS calculation (in shares)									41	71	117
Shares issuable upon conversion of convertible notes
Statement
Anti-dilutive securities not considered in diluted EPS calculation (in shares)									0	0	176