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Summary of Financial Effects of Troubled Debt Restructurings (Detail) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 USD ($) Investment | Mar. 31, 2016 USD ($) Investment
Financing Receivable, Modifications [Line Items] |  |
Number of loans classified as a non-accrual TDRs | Investment | 18 | 5
Pre-Modification Recorded Investment | $ 8,262 | $ 11,813
Post-Modification Recorded Investment | 5,084 | 11,594
Trouble debt restructuring, charge-off amount | 3,280 | 47
Capitalized interest | $ 5 | $ 4
One-to-four family |  |
Financing Receivable, Modifications [Line Items] |  |
Number of loans classified as a non-accrual TDRs | Investment | 1 | 2
Pre-Modification Recorded Investment | $ 264 | $ 476
Post-Modification Recorded Investment | $ 339 | $ 533
Weighted Average Interest Rate, Pre-Modification | 6.00% | 3.52%
Weighted Average Interest Rate, Post-Modification | 2.63% | 3.29%
Capitalized interest | $ 5 | $ 4
Commercial and Industrial |  |
Financing Receivable, Modifications [Line Items] |  |
Number of loans classified as a non-accrual TDRs | Investment | 17 | 1
Pre-Modification Recorded Investment | $ 7,998 | $ 745
Post-Modification Recorded Investment | $ 4,745 | $ 695
Weighted Average Interest Rate, Pre-Modification | 3.30% | 3.30%
Weighted Average Interest Rate, Post-Modification | 3.46% | 3.10%
Trouble debt restructuring, charge-off amount | $ 3,280 | $ 47
Multi-Family |  |
Financing Receivable, Modifications [Line Items] |  |
Number of loans classified as a non-accrual TDRs | Investment |  | 2
Pre-Modification Recorded Investment |  | $ 10,592
Post-Modification Recorded Investment |  | $ 10,366
Weighted Average Interest Rate, Pre-Modification |  | 4.63%
Weighted Average Interest Rate, Post-Modification |  | 4.08%

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524 + Details
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- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
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