Earnings Per Share (Computation of Basic and Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Income (loss) from continuing operations	$ (3,683)	$ 6,976	$ (3,922)	$ 14,243
Income from discontinued operations		8,617		9,604
Net income (loss)	$ (3,683)us-gaap_NetIncomeLoss	$ 15,593us-gaap_NetIncomeLoss	$ (3,922)us-gaap_NetIncomeLoss	$ 23,847us-gaap_NetIncomeLoss
Denominator:
Weighted average basic shares	12,018	12,004	12,029	11,999
Dilutive effect of restricted stock units		60		58
Weighted average diluted shares with assumed conversions	12,018	12,064	12,029	12,057
Net earnings (loss) per share:
Continuing operations	$ (0.31)	$ 0.58	$ (0.33)	$ 1.19
Discontinued operations		$ 0.72		$ 0.80
Basic earnings (loss) per share	$ (0.31)us-gaap_EarningsPerShareBasic	$ 1.30us-gaap_EarningsPerShareBasic	$ (0.33)us-gaap_EarningsPerShareBasic	$ 1.99us-gaap_EarningsPerShareBasic
Continuing operations	$ (0.31)	$ 0.58	$ (0.33)	$ 1.18
Discontinued operations		$ 0.71		$ 0.80
Diluted earnings (loss) per share	$ (0.31)us-gaap_EarningsPerShareDiluted	$ 1.29us-gaap_EarningsPerShareDiluted	$ (0.33)us-gaap_EarningsPerShareDiluted	$ 1.98us-gaap_EarningsPerShareDiluted

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation.

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Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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