Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Numerator:
Numerator for basic and diluted earnings per share from continuing operations - income (loss) from continuing operations									$ 8,285	$ (26,429)	$ (133,932)
Numerator for basic and diluted earnings per share from discontinued operations - income (loss) from discontinued operations, net of income taxes									(1,148)	(35,819)	(95,989)
Net income (loss)	$ 10,253	$ 11,016	$ (8,260)	$ (5,872)	$ (4,906)	$ (13,036)	$ (20,558)	$ (23,748)	$ 7,137	$ (62,248)	$ (229,921)
Denominator:
Denominator for basic earnings per share - weighted-average shares outstanding									70,128	60,894	60,440
Effect of dilutive securities - shares issuable upon exercise of options and SARs and vesting of restricted stock									1,124	0	0
Denominator for diluted earnings per share - weighted-average shares outstanding after assumed exercises and vesting									71,252	60,894	60,440
Basic and diluted income (loss) per share from continuing operations (in dollars per share)									$ 0.12	$ (0.43)	$ (2.21)
Basic and diluted loss per share from discontinued operations (in dollars per share)									$ (0.02)	$ (0.59)	$ (1.59)
Earnings (loss) per share, basic and diluted, total (in dollars per share)	$ 0.14	$ 0.15	$ (0.11)	$ (0.09)	$ (0.08)	$ (0.21)	$ (0.34)	$ (0.39)	$ 0.10	$ (1.02)	$ (3.80)
SARs
Statement
Anti-dilutive securities not considered in diluted EPS calculation (in shares)									1,305	2,962	2,842
Stock Options
Statement
Anti-dilutive securities not considered in diluted EPS calculation (in shares)									968	1,382	1,674
Restricted Stock
Statement
Anti-dilutive securities not considered in diluted EPS calculation (in shares)									0	41	71