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Income (Loss) Per Share and Per Unit - Additional Information (Detail) - shares | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Earnings Per Share [Line Items] |  |
Number of non-committed, unearned ESOP shares | 640,244 | 648,668
ESOP [Member] |  |
Earnings Per Share [Line Items] |  |
Number of ESOP units | 0 |

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- Definition Earnings per share. + References No definition available. + Details
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- Definition Shares contributed to the ESOP that have not yet been released, committed to be released, or allocated to participant accounts. Suspense shares generally collateralize ESOP debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65895303&loc=d3e17540-113929 + Details
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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Details
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