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Additional Information about Impaired Loans (Detail) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2016 | Dec. 31, 2015
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Related Allowance, Recorded Investment | $ 35,825 | $ 51,954
Impaired Loans with No Related Allowance, Unpaid Principal Balance | 44,910 | 61,617
Impaired Loans with No Related Allowance, Average Recorded Investment | 41,304 | 67,805
Impaired Loans with No Related Allowance, Interest Income Recognized | 584 | 2,044
Multi-Family |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Related Allowance, Recorded Investment | 11,106 | 27,464
Impaired Loans with No Related Allowance, Unpaid Principal Balance | 13,273 | 29,379
Impaired Loans with No Related Allowance, Average Recorded Investment | 17,190 | 30,965
Impaired Loans with No Related Allowance, Interest Income Recognized | 325 | 1,320
Commercial Real Estate |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Related Allowance, Recorded Investment | 11,144 | 13,995
Impaired Loans with No Related Allowance, Unpaid Principal Balance | 16,859 | 15,480
Impaired Loans with No Related Allowance, Average Recorded Investment | 12,114 | 25,066
Impaired Loans with No Related Allowance, Interest Income Recognized | 101 | 383
One-to-four family |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Related Allowance, Recorded Investment | 2,948 | 3,384
Impaired Loans with No Related Allowance, Unpaid Principal Balance | 3,597 | 8,929
Impaired Loans with No Related Allowance, Average Recorded Investment | 3,064 | 2,302
Impaired Loans with No Related Allowance, Interest Income Recognized | 47 | 75
Acquisition, Development and Construction |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Related Allowance, Recorded Investment |  | 2,637
Impaired Loans with No Related Allowance, Unpaid Principal Balance |  | 3,035
Impaired Loans with No Related Allowance, Average Recorded Investment | 879 | 1,086
Impaired Loans with No Related Allowance, Interest Income Recognized |  | 148
Other loans |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Related Allowance, Recorded Investment | 10,627 | 4,474
Impaired Loans with No Related Allowance, Unpaid Principal Balance | 11,181 | 4,794
Impaired Loans with No Related Allowance, Average Recorded Investment | 8,057 | 8,386
Impaired Loans with No Related Allowance, Interest Income Recognized | $ 111 | $ 118

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- Definition Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5258-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
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