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Accounting Policies - Summary of Computation of Basic and Diluted Earnings Per Share (Parenthetical) (Detail) | Jun. 15, 2018 | May 15, 2018
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Accounting Policies [Abstract] |  |
Stock split ratio | 0.015 | 0.015

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- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 + Details
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