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Income Taxes - Narrative (Details) - USD ($)			3 Months Ended
	Dec. 22, 2017	Dec. 21, 2017	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Effective tax rate, percent			49.20%	28.70%
Corporate tax rate	21.00%	35.00%	24.50%
Tax provision			$ 0
Tax expense			1,000,000
Increase in tax expense			$ 30

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Tax Adjustments, Settlements, and Unusual Provisions,Deferred Tax Remeasurement Tax Expense

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Tax Adjustments, Settlements, and Unusual Provisions, Increase (Decrease) Income Tax Expense

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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