Earnings per Share and Dividends per Share - Additional Information (Detail) - $ / shares		3 Months Ended
Dec. 05, 2018	Dec. 31, 2018
Weighted Average Amounts Used In Calculating Earnings Per Share [Line Items]
Dividends paid	$ 0.11
Date of record	Nov. 13, 2018
Restricted Stock Units (RSUs) [Member]
Weighted Average Amounts Used In Calculating Earnings Per Share [Line Items]
Stock options excluded from diluted earnings per share		335,350

Weighted Average Amounts Used In Calculating Earnings Per Share [Line Items]

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ References

No definition available.

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