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FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) | 6 Months Ended
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Jun. 30, 2016
Quantitative information |
Schedule of assets (liabilities) measured at fair value on a recurring basis | The following tables present financial assets and liabilities that are measured at fair value on a recurring basis as of June 30, 2016 and December 31, 2015:
|  | Assets (Liabilities) Measured at Fair Value on a Recurring Basis as of June 30, 2016
($ in thousands) |  | Fair Value Measurements |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Available-for-sale investment securities: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 488,560 |  |  | $ | 488,560 |  |  | $ | — |  |  | $ | — |
U.S. government agency and U.S. government sponsored enterprise debt securities |  | 703,929 |  |  | — |  |  | 703,929 |  |  | — |
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |
Commercial mortgage-backed securities |  | 308,364 |  |  | — |  |  | 308,364 |  |  | — |
Residential mortgage-backed securities |  | 1,058,901 |  |  | — |  |  | 1,058,901 |  |  | — |
Municipal securities |  | 153,903 |  |  | — |  |  | 153,903 |  |  | — |
Non-agency residential mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |
Investment grade |  | 55,975 |  |  | — |  |  | 55,975 |  |  | — |
Corporate debt securities: |  |  |  |  |  |  |  |  |  |  |  |
Investment grade |  | 416,864 |  |  | — |  |  | 416,864 |  |  | — |
Non-investment grade |  | 8,408 |  |  | — |  |  | 8,408 |  |  | — |
Other securities |  | 45,428 |  |  | 36,496 |  |  | 8,932 |  |  | — |
Total available-for-sale investment securities |  | $ | 3,240,332 |  |  | $ | 525,056 |  |  | $ | 2,715,276 |  |  | $ | — |
Derivative assets: |  |  |  |  |  |  |  |
Foreign currency forward contracts |  | $ | 1,732 |  |  | $ | — |  |  | $ | 1,732 |  |  | $ | — |
Interest rate swaps and options |  | $ | 157,035 |  |  | $ | — |  |  | $ | 157,035 |  |  | $ | — |
Foreign exchange contracts |  | $ | 10,078 |  |  | $ | — |  |  | $ | 10,078 |  |  | $ | — |
Derivative liabilities: |  |  |  |  |  |  |  |
Interest rate swaps on certificates of deposit |  | $ | (810 | ) |  | $ | — |  |  | $ | (810 | ) |  | $ | — |
Interest rate swaps and options |  | $ | (159,776 | ) |  | $ | — |  |  | $ | (159,776 | ) |  | $ | — |
Foreign exchange contracts |  | $ | (8,634 | ) |  | $ | — |  |  | $ | (8,634 | ) |  | $ | — |
Credit risk participation agreements (“RPAs”) |  | $ | (12 | ) |  | $ | — |  |  | $ | (12 | ) |  | $ | — |
|  | Assets (Liabilities) Measured at Fair Value on a Recurring Basis as of December 31, 2015
($ in thousands) |  | Fair Value Measurements |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Available-for-sale investment securities: |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 998,515 |  |  | $ | 998,515 |  |  | $ | — |  |  | $ | — |
U.S. government agency and U.S. government sponsored enterprise debt securities |  | 768,849 |  |  | — |  |  | 768,849 |  |  | — |
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |
Commercial mortgage-backed securities |  | 351,662 |  |  | — |  |  | 351,662 |  |  | — |
Residential mortgage-backed securities |  | 997,396 |  |  | — |  |  | 997,396 |  |  | — |
Municipal securities |  | 175,649 |  |  | — |  |  | 175,649 |  |  | — |
Non-agency residential mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |
Investment grade |  | 62,393 |  |  | — |  |  | 62,393 |  |  | — |
Corporate debt securities: |  |  |  |  |  |  |  |  |  |  |  |
Investment grade |  | 364,713 |  |  | — |  |  | 364,713 |  |  | — |
Non-investment grade |  | 9,642 |  |  | — |  |  | 9,642 |  |  | — |
Other securities |  | 44,407 |  |  | 35,635 |  |  | 8,772 |  |  | — |
Total available-for-sale investment securities |  | $ | 3,773,226 |  |  | $ | 1,034,150 |  |  | $ | 2,739,076 |  |  | $ | — |
Derivative assets: |  |  |  |  |  |  |  |
Foreign currency forward contracts |  | $ | 2,365 |  |  | $ | — |  |  | $ | 2,365 |  |  | $ | — |
Interest rate swaps and options |  | $ | 67,215 |  |  | $ | — |  |  | $ | 67,215 |  |  | $ | — |
Foreign exchange contracts |  | $ | 10,254 |  |  | $ | — |  |  | $ | 10,254 |  |  | $ | — |
Derivative liabilities: |  |  |  |  |  |  |  |
Interest rate swaps on certificates of deposit |  | $ | (5,213 | ) |  | $ | — |  |  | $ | (5,213 | ) |  | $ | — |
Interest rate swaps and options |  | $ | (67,325 | ) |  | $ | — |  |  | $ | (67,325 | ) |  | $ | — |
Foreign exchange contracts |  | $ | (9,350 | ) |  | $ | — |  |  | $ | (9,350 | ) |  | $ | — |
RPAs |  | $ | (4 | ) |  | $ | — |  |  | $ | (4 | ) |  | $ | — |
Reconciliation of major asset and liability categories measured at fair value on a recurring using significant unobservable inputs (level3) | The following table presents a reconciliation of the beginning and ending balances for major asset and liability categories measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the three and six months ended June 30, 2015:
($ in thousands) |  | Three Months Ended June 30, |  | Six Months Ended June 30,
| 2015 |  | 2015
| Corporate Debt Securities: Non-Investment Grade |  | Embedded Derivative Liabilities |  | Corporate Debt Securities: Non-Investment Grade |  | Embedded Derivative Liabilities
Beginning balance |  | $ | — |  |  | $ | (3,412 | ) |  | $ | 6,528 |  |  | $ | (3,392 | )
Total gains (losses) for the period: |  |  |  |  |  |  |  |  |  |
Included in earnings (1) |  | — |  |  | — |  |  | 960 |  |  | (20 | )
Included in other comprehensive income (2) |  | — |  |  | — |  |  | 922 |  |  | — |
Sales and settlements: |  |  |  |  |  |  |  |  |  |
Sales |  | — |  |  | — |  |  | (7,219 | ) |  | — |
Settlements |  | — |  |  | 3,412 |  |  | (98 | ) |  | 3,412 |
Transfers in and/or out of Level 3 |  | — |  |  | — |  |  | (1,093 | ) |  | — |
Ending balance |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Change in unrealized losses included in earnings relating to assets and liabilities held for the period |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
(1) | Net gains or losses (realized and unrealized) of corporate debt securities and embedded derivative liabilities are included in Net gains on sales of available-for-sale investment securities and Other operating expense, respectively, on the Consolidated Statements of Income.
(2) | Unrealized gains or losses on available-for-sale investment securities are reported in Other comprehensive income, net of tax, on the Consolidated Statements of Comprehensive Income.
Schedule of assets measured at fair value on a nonrecurring basis | The following tables present the carrying amounts of all assets that were still held as of June 30, 2016 and December 31, 2015 for which a nonrecurring fair value measurement was recorded:
|  | Assets Measured at Fair Value on a Nonrecurring Basis as of June 30, 2016
($ in thousands) |  | Fair Value Measurements |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Non-PCI impaired loans: |  |  |  |  |  |  |  |  |  |  |  |
Commercial real estate (“CRE”) |  | $ | 21,443 |  |  | $ | — |  |  | $ | — |  |  | $ | 21,443 |
Commercial and industrial (“C&I”) |  | 50,362 |  |  | — |  |  | — |  |  | 50,362 |
Residential |  | 15,957 |  |  | — |  |  | — |  |  | 15,957 |
Consumer |  | 1,531 |  |  | — |  |  | — |  |  | 1,531 |
Total non-PCI impaired loans |  | $ | 89,293 |  |  | $ | — |  |  | $ | — |  |  | $ | 89,293 |
OREO |  | $ | 3,647 |  |  | $ | — |  |  | $ | — |  |  | $ | 3,647 |
Loans held for sale |  | $ | 27,895 |  |  | $ | — |  |  | $ | 27,895 |  |  | $ | — |
|  | Assets Measured at Fair Value on a Nonrecurring Basis as of December 31, 2015
($ in thousands) |  | Fair Value Measurements |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
Non-PCI impaired loans: |  |  |  |  |  |  |  |  |  |  |  |
CRE |  | $ | 17,252 |  |  | $ | — |  |  | $ | — |  |  | $ | 17,252 |
C&I |  | 35,558 |  |  | — |  |  | — |  |  | 35,558 |
Residential |  | 16,472 |  |  | — |  |  | — |  |  | 16,472 |
Consumer |  | 1,180 |  |  | — |  |  | — |  |  | 1,180 |
Total non-PCI impaired loans |  | $ | 70,462 |  |  | $ | — |  |  | $ | — |  |  | $ | 70,462 |
OREO |  | $ | 4,929 |  |  | $ | — |  |  | $ | — |  |  | $ | 4,929 |
Loans held for sale |  | $ | 29,238 |  |  | $ | — |  |  | $ | 29,238 |  |  | $ | — |
Schedule of fair value adjustments of certain assets measured on a nonrecurring basis recognized | The following table presents fair value adjustments of certain assets measured on a nonrecurring basis recognized during the three and six months ended and still held as of June 30, 2016 and 2015:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
($ in thousands) |  | 2016 |  | 2015 |  | 2016 |  | 2015
Non-PCI impaired loans: |  |  |  |  |  |  |  |  |  |
CRE |  | $ | (261 | ) |  | $ | (445 | ) |  | $ | 1,908 |  |  | $ | (905 | )
C&I |  | (4,693 | ) |  | (6,454 | ) |  | (9,149 | ) |  | (9,303 | )
Residential |  | (4 | ) |  | (216 | ) |  | 27 |  |  | (341 | )
Consumer |  | (2 | ) |  | (1 | ) |  | 14 |  |  | (1 | )
Total non-PCI impaired loans |  | $ | (4,960 | ) |  | $ | (7,116 | ) |  | $ | (7,200 | ) |  | $ | (10,550 | )
OREO |  | $ | (1,073 | ) |  | $ | (200 | ) |  | $ | (1,529 | ) |  | $ | (258 | )
Loans held for sale |  | $ | — |  |  | $ | (517 | ) |  | $ | (2,351 | ) |  | $ | (517 | )
Schedule of the carrying and fair values per the fair value hierarchy of certain financial instruments | The following tables present the carrying and fair values per the fair value hierarchy of certain financial instruments, excluding those measured at fair value on a recurring basis, as of June 30, 2016 and December 31, 2015:
($ in thousands) |  | June 30, 2016
| Carrying Amount |  | Level 1 |  | Level 2 |  | Level 3 |  | Estimated Fair Value
Financial assets: |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 1,592,796 |  |  | $ | 1,592,796 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,592,796 |
Short-term investments |  | $ | 229,979 |  |  | $ | — |  |  | $ | 229,979 |  |  | $ | — |  |  | $ | 229,979 |
Resale agreements (1) |  | $ | 1,850,000 |  |  | $ | — |  |  | $ | 1,850,427 |  |  | $ | — |  |  | $ | 1,850,427 |
Held-to-maturity investment security |  | $ | 159,208 |  |  | $ | — |  |  | $ | — |  |  | $ | 158,279 |  |  | $ | 158,279 |
Loans held for sale |  | $ | 51,290 |  |  | $ | — |  |  | $ | 51,290 |  |  | $ | — |  |  | $ | 51,290 |
Loans receivable, net |  | $ | 23,969,599 |  |  | $ | — |  |  | $ | — |  |  | $ | 23,928,765 |  |  | $ | 23,928,765 |
Investment in FHLB stock |  | $ | 18,158 |  |  | $ | — |  |  | $ | 18,158 |  |  | $ | — |  |  | $ | 18,158 |
Investment in Federal Reserve Bank stock |  | $ | 55,216 |  |  | $ | — |  |  | $ | 55,216 |  |  | $ | — |  |  | $ | 55,216 |
Accrued interest receivable |  | $ | 86,503 |  |  | $ | — |  |  | $ | 86,503 |  |  | $ | — |  |  | $ | 86,503 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer deposit accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Demand, savings and money market deposits |  | $ | 22,484,884 |  |  | $ | — |  |  | $ | 22,484,884 |  |  | $ | — |  |  | $ | 22,484,884 |
Time deposits |  | $ | 5,732,359 |  |  | $ | — |  |  | $ | 5,736,110 |  |  | $ | — |  |  | $ | 5,736,110 |
Short-term borrowings |  | $ | 29,499 |  |  | $ | — |  |  | $ | 29,499 |  |  | $ | — |  |  | $ | 29,499 |
FHLB advances |  | $ | 320,526 |  |  | $ | — |  |  | $ | 332,595 |  |  | $ | — |  |  | $ | 332,595 |
Repurchase agreements (1) |  | $ | 200,000 |  |  | $ | — |  |  | $ | 268,353 |  |  | $ | — |  |  | $ | 268,353 |
Accrued interest payable |  | $ | 8,053 |  |  | $ | — |  |  | $ | 8,053 |  |  | $ | — |  |  | $ | 8,053 |
Long-term debt |  | $ | 196,204 |  |  | $ | — |  |  | $ | 196,826 |  |  | $ | — |  |  | $ | 196,826 |
(1) | Resale and repurchase agreements are reported net pursuant to ASC 210-20-45, Balance Sheet Offsetting. As of June 30, 2016, $250.0 million out of $450.0 million of repurchase agreements was eligible for netting against resale agreements.
|  | December 31, 2015
($ in thousands) |  | Carrying Amount |  | Level 1 |  | Level 2 |  | Level 3 |  | Estimated Fair Value
Financial assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 1,360,887 |  |  | $ | 1,360,887 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,360,887 |
Short-term investments |  | $ | 299,916 |  |  | $ | — |  |  | $ | 299,916 |  |  | $ | — |  |  | $ | 299,916 |
Resale agreements (1) |  | $ | 1,600,000 |  |  | $ | — |  |  | $ | 1,533,961 |  |  | $ | — |  |  | $ | 1,533,961 |
Loans held for sale |  | $ | 31,958 |  |  | $ | — |  |  | $ | 31,958 |  |  | $ | — |  |  | $ | 31,958 |
Loans receivable, net |  | $ | 23,378,789 |  |  | $ | — |  |  | $ | — |  |  | $ | 23,000,817 |  |  | $ | 23,000,817 |
Investment in FHLB stock |  | $ | 28,770 |  |  | $ | — |  |  | $ | 28,770 |  |  | $ | — |  |  | $ | 28,770 |
Investment in Federal Reserve Bank stock |  | $ | 54,932 |  |  | $ | — |  |  | $ | 54,932 |  |  | $ | — |  |  | $ | 54,932 |
Accrued interest receivable |  | $ | 89,243 |  |  | $ | — |  |  | $ | 89,243 |  |  | $ | — |  |  | $ | 89,243 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer deposit accounts: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Demand, savings and money market deposits |  | $ | 20,859,086 |  |  | $ | — |  |  | $ | 20,859,086 |  |  | $ | — |  |  | $ | 20,859,086 |
Time deposits |  | $ | 6,616,895 |  |  | $ | — |  |  | $ | 6,606,942 |  |  | $ | — |  |  | $ | 6,606,942 |
FHLB advances |  | $ | 1,019,424 |  |  | $ | — |  |  | $ | 1,032,000 |  |  | $ | — |  |  | $ | 1,032,000 |
Accrued interest payable |  | $ | 8,848 |  |  | $ | — |  |  | $ | 8,848 |  |  | $ | — |  |  | $ | 8,848 |
Long-term debt |  | $ | 206,084 |  |  | $ | — |  |  | $ | 186,593 |  |  | $ | — |  |  | $ | 186,593 |
(1) | Resale and repurchase agreements are reported net pursuant to ASC 210-20-45, Balance Sheet Offsetting. As of December 31, 2015, the carrying amount of $450.0 million of repurchase agreements was eligible for netting against resale agreements, resulting in no repurchase agreements’ balances reported.
Fair Value, Measurements, Nonrecurring |
Quantitative information |
Schedule of quantitative information about significant unobservable inputs used in the valuation of assets and liabilities classified as Level 3 | The following table presents quantitative information about significant unobservable inputs used in the valuation of assets measured on a nonrecurring basis classified as Level 3 as of June 30, 2016 and December 31, 2015:
($ in thousands) |  | Fair Value Measurements (Level 3) |  | Valuation Technique(s) |  | Unobservable Input(s) |  | Range of Inputs |  | Weighted Average
June 30, 2016 |  |  |  |  |  |  |  |  |  |  |
Non-PCI impaired loans |  | $ | 48,169 |  |  | Discounted cash flow |  | Discount rate |  | 0% — 84% |  | 20%
|  | $ | 41,124 |  |  | Market comparables |  | Discount rate (1) |  | 0% — 100% |  | 18%
OREO |  | $ | 3,647 |  |  | Appraisal |  | Selling cost |  | 8% |  | 8%
December 31, 2015 |  |  |  |  |  |  |  |  |  |
Non-PCI impaired loans |  | $ | 27,522 |  |  | Discounted cash flow |  | Discount rate |  | 0% — 87% |  | 30%
|  | $ | 42,940 |  |  | Market comparables |  | Discount rate (1) |  | 0% — 100% |  | 17%
OREO |  | $ | 4,929 |  |  | Appraisal |  | Selling cost |  | 8% |  | 8%
(1) | Discount rate is adjusted for factors such as liquidation cost of collateral and selling cost.

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- Definition Tabular disclosure of fair value measurement of assets and liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of asset and liability. + References No definition available. + Details
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- Definition Tabular disclosure of the inputs and valuation techniques used to measure fair value, and a discussion of changes in valuation techniques and related inputs, if any, applied during the period to each separate class of assets, liabilities, and financial instruments classified in shareholders' equity that are measured on a recurring and/or nonrecurring basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19296-110258 + Details
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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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