Represents the amount of accrued contingent liability for reclamation obligations.

No definition available.

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- Definition

Represents the number of reclamation obligations related to discontinued operations for which the entity remains contingently liable.

+ References

No definition available.

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- Definition

Represents the number of sales transactions of discontinued operations in which the buyer agreed to assume the lease and reclamation obligations related to certain of the facilities.

+ References

No definition available.

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- Definition

Amount classified as assets attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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- Definition

Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

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Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Discontinued Operations (Details) $ in Thousands	3 Months Ended		6 Months Ended
Discontinued Operations (Details) $ in Thousands	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2017 USD ($) item	Mar. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2013 USD ($)
Discontinued operations
Gain (loss) from operations of discontinued operations before income taxes	$ 6	$ (353)	$ 249	$ (699)
Income tax benefit (provision)	0	125	(90)	255
Income (loss) from discontinued operations, net of income taxes	6	$ (228)	$ 159	$ (444)
Coal Cleaning Business \| Discontinued Operations, Disposed of by Sale
Discontinued operations
Remaining assets held for sale						$ 0
Number of sales transactions in which the buyer agreed to assume the lease and certain reclamation obligations \| item			1
Number of reclamation obligations \| item			1
Accrued liability for reclamation obligations	$ 8,700		$ 8,700		$ 9,300