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NON-COVERED LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 3) (USD $) | 6 Months Ended |  | 3 Months Ended | 6 Months Ended |  |  |  | 0 Months Ended |  |  |  |
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Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013 | Jun. 30, 2014 Non-covered loans | Jun. 30, 2013 Non-covered loans | Jun. 30, 2014 Non-covered loans | Jun. 30, 2013 Non-covered loans | Dec. 31, 2013 Non-covered loans | Jan. 17, 2014 MetroCorp | Jun. 30, 2014 MetroCorp Non-covered loans | Jan. 17, 2014 MetroCorp Covered Loans under ASC 310-30 Subject to Allowance for Loan Losses Non-covered loans | Jun. 30, 2014 Residential Non-covered loans | Dec. 31, 2013 Residential Non-covered loans | Jun. 30, 2014 Commercial Real Estate ("CRE") Non-covered loans | Dec. 31, 2013 Commercial Real Estate ("CRE") Non-covered loans
Credit Risk and Concentrations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of non-covered commercial real estate loans and non-covered residential loans secured by real properties located in California |  |  |  | 80.00% |  |  | 80.00% |  |  |  |  |  |  |  |  |  |  |
Loans receivable, excluding covered loans, gross |  |  |  | $ 18,277,768,000 | [1] |  | $ 18,277,768,000 | [1] |  | $ 15,678,317,000 | [1] |  |  |  | $ 4,449,727,000 | $ 4,185,309,000 | $ 5,798,303,000 | $ 4,585,077,000
Purchased Loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans purchased during the period |  |  |  |  |  |  | 86,300,000 |  |  |  |  |  |  |  |  |  |  |
Acquired Loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loans acquired during the period |  |  |  |  |  |  |  |  |  |  |  | 1,190,000,000 |  |  |  |  |  |
Acquired loans accounted (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.00% |  |  |  |
PCI loans |  |  |  |  |  |  |  |  |  |  |  |  | 58,900,000 |  |  |  |  |
Loans Held for Sale |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total loans held for sale | 450,864,000 |  | 204,970,000 | 450,900,000 |  |  | 450,900,000 |  |  | 205,000,000 |  |  |  |  |  |  |  |
Proceeds from the sales of Loans held for sale, including loans reclassified to loans held for sale |  |  |  | 190,500,000 |  | 0 | 326,300,000 |  | 6,300,000 |  |  |  |  |  |  |  |  |
Net gain from sale of loans held for sale during the period |  |  |  | 5,000,000 |  |  | 8,500,000 |  | 1,000 |  |  |  |  |  |  |  |  |
Loans receivable reclassified to loans held for sale | $ 460,828,000 | $ 19,125,000 |  | $ 27,000,000 |  |  | $ 460,828,000 |  |  |  |  |  |  |  |  |  |  |
[1] | Loans net of ASC 310-30 discount.

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- Definition Represents the contractually required payments receivable at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality, expressed as a percentage. + References No definition available. + Details
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- Definition The percentage of non-covered commercial real estate loans and non-covered residential loans secured by real properties located in California. + References No definition available. + Details
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- Definition Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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- Definition The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans and leases that were sold during the reporting period. This element refers to the gain (loss) and not to the cash proceeds of the sales. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of loans held for sale, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a -Article 9 Reference 3: 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(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 35 -Paragraph 49 -URI http://asc.fasb.org/extlink&oid=25442802&loc=d3e3084-111518 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6490209&loc=d3e48214-111002 + Details
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