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Summary of Portfolio of Securities Available for Sale (Detail) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | $ 52,511 |  | $ 105,567
Gross Unrealized Gain | 515 |  | 1,980
Gross Unrealized Loss | 2,802 |  | 3,266
Fair Value | 50,224 |  | 104,281
Mortgage-Related Securities | GSE certificates |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 7,748 | [1] | 7,786
Gross Unrealized Loss | 445 | [1] | 460
Fair Value | 7,303 | [1] | 7,326
Other Securities |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 44,763 |  | 97,781
Gross Unrealized Gain | 515 |  | 1,980
Gross Unrealized Loss | 2,357 |  | 2,806
Fair Value | 42,921 |  | 96,955
Other Securities | Municipal bonds |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 584 |  | 583
Gross Unrealized Gain | 47 |  | 48
Fair Value | 631 |  | 631
Other Securities | Capital trust notes |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 9,463 |  | 9,458
Gross Unrealized Gain |  |  | 2
Gross Unrealized Loss | 2,046 |  | 2,217
Fair Value | 7,417 |  | 7,243
Other Securities | Preferred Stock (Par Value: $0.01): |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 17,842 |  | 70,866
Gross Unrealized Gain | 44 |  | 1,446
Gross Unrealized Loss | 50 |  | 328
Fair Value | 17,836 |  | 71,984
Other Securities | Mutual Funds and Common Stock |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Amortized Cost | 16,874 | [2] | 16,874
Gross Unrealized Gain | 424 | [2] | 484
Gross Unrealized Loss | 261 | [2] | 261
Fair Value | $ 17,037 | [2] | $ 17,097
[1] | Government-sponsored enterprise.
[2] | Primarily consists of mutual funds that are Community Reinvestment Act-qualified investments.

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 + Details
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