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Accounting for Investments in Qualified Affordable Housing Projects - Summary of Change in Accounting Principle on Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2013 | Dec. 31, 2012
--- | --- | --- | --- | ---
Assets |  |  |  |
Cash and cash equivalents | $ 123,782 | $ 179,357 | $ 77,860 | $ 268,047
Securities available for sale | 505,977 | 530,926 |  |
Loans receivable | 2,300,810 | 2,177,498 |  |
Income tax assets | 53,160 | 63,841 |  |
Other assets | 15,049 | 14,333 |  |
Total assets | 3,094,775 | 3,054,379 |  |
Liabilities and Stockholders' Equity |  |  |  |
Liabilities | 2,668,427 | 2,654,302 |  |
Stockholders' equity | 426,348 | 400,077 | 394,200 | 378,364
Total liabilities and stockholders' equity | 3,094,775 | 3,054,379 |  |
As Previously Reported [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents |  | 179,357 | 77,860 | 268,047
Securities available for sale |  | 530,926 |  |
Loans receivable |  | 2,177,498 |  |
Income tax assets |  | 63,536 |  |
Other assets |  | 104,222 |  |
Total assets |  | 3,055,539 |  |
Liabilities and Stockholders' Equity |  |  |  |
Liabilities |  | 2,654,302 |  |
Stockholders' equity |  | 401,237 |  |
Total liabilities and stockholders' equity |  | 3,055,539 |  |
Effect of Change in Accounting Principle [Member] |  |  |  |
Assets |  |  |  |
Income tax assets |  | 305 |  |
Other assets |  | (1,465) |  |
Total assets |  | (1,160) |  |
Liabilities and Stockholders' Equity |  |  |  |
Stockholders' equity |  | (1,160) |  |
Total liabilities and stockholders' equity |  | $ (1,160) |  |

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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