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FAIR VALUE MEASUREMENT AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) | 9 Months Ended
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Sep. 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 September 30, 2016 and December 31, 2015:
|  | Assets (Liabilities) Measured at Fair Value on a Recurring Basis as of September 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 |  | $ | 456,448 |  |  | $ | 456,448 |  |  | $ | — |  |  | $ | — |
U.S. government agency and U.S. government sponsored enterprise debt securities |  | 383,331 |  |  | — |  |  | 383,331 |  |  | — |
U.S. government agency and U.S. government sponsored enterprise mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |
Commercial mortgage-backed securities |  | 326,818 |  |  | — |  |  | 326,818 |  |  | — |
Residential mortgage-backed securities |  | 1,194,838 |  |  | — |  |  | 1,194,838 |  |  | — |
Municipal securities |  | 152,293 |  |  | — |  |  | 152,293 |  |  | — |
Non-agency residential mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |
Investment grade |  | 52,957 |  |  | — |  |  | 52,957 |  |  | — |
Corporate debt securities: |  |  |  |  |  |  |  |  |  |  |  |
Investment grade |  | 281,987 |  |  | — |  |  | 281,987 |  |  | — |
Non-investment grade |  | 8,778 |  |  | — |  |  | 8,778 |  |  | — |
Foreign bonds: |  |  |  |  |  |  |  |
Investment grade |  | 337,434 |  |  | — |  |  | 337,434 |  |  | — |
Other securities |  | 41,740 |  |  | 31,939 |  |  | 9,801 |  |  | — |
Total available-for-sale investment securities |  | $ | 3,236,624 |  |  | $ | 488,387 |  |  | $ | 2,748,237 |  |  | $ | — |
Derivative assets: |  |  |  |  |  |  |  |
Interest rate swaps and options |  | $ | 144,293 |  |  | $ | — |  |  | $ | 144,293 |  |  | $ | — |
Foreign exchange contracts |  | $ | 6,065 |  |  | $ | — |  |  | $ | 6,065 |  |  | $ | — |
Derivative liabilities: |  |  |  |  |  |  |  |
Interest rate swaps on certificates of deposit |  | $ | (2,137 | ) |  | $ | — |  |  | $ | (2,137 | ) |  | $ | — |
Foreign currency forward contracts |  | $ | (78 | ) |  | $ | — |  |  | $ | (78 | ) |  | $ | — |
Interest rate swaps and options |  | $ | (146,623 | ) |  | $ | — |  |  | $ | (146,623 | ) |  | $ | — |
Foreign exchange contracts |  | $ | (3,334 | ) |  | $ | — |  |  | $ | (3,334 | ) |  | $ | — |
Credit risk participation agreements (“RPAs”) |  | $ | (8 | ) |  | $ | — |  |  | $ | (8 | ) |  | $ | — |
|  | 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 |  | 279,432 |  |  | — |  |  | 279,432 |  |  | — |
Non-investment grade |  | 9,642 |  |  | — |  |  | 9,642 |  |  | — |
Foreign bonds: |  |  |  |  |  |  |  |
Investment grade |  | 89,795 |  |  | 4,514 |  |  | 85,281 |  |  | — |
Other securities |  | 39,893 |  |  | 31,121 |  |  | 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 basis 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 nine months ended September 30, 2015:
($ in thousands) |  | Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2015 |  | 2015
| Corporate Debt Securities: Non-Investment Grade |  | Embedded Derivative Liabilities |  | Corporate Debt Securities: Non-Investment Grade |  | Embedded Derivative Liabilities
Beginning balance |  | $ | — |  |  | $ | — |  |  | $ | 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 |  | — |  |  | — |  |  | (98 | ) |  | 3,412 |
Transfers in and/or out of Level 3 |  | — |  |  | — |  |  | (1,093 | ) |  | — |
Ending balance |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Changes 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 assets included in the Consolidated Balance Sheets that had fair value changes during the year-to-date period measured on a nonrecurring basis:
|  | Assets Measured at Fair Value on a Nonrecurring Basis as of September 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”) |  | $ | 20,904 |  |  | $ | — |  |  | $ | — |  |  | $ | 20,904 |
Commercial and industrial (“C&I”) |  | 58,854 |  |  | — |  |  | — |  |  | 58,854 |
Residential |  | 2,305 |  |  | — |  |  | — |  |  | 2,305 |
Consumer |  | 594 |  |  | — |  |  | — |  |  | 594 |
Total non-PCI impaired loans |  | $ | 82,657 |  |  | $ | — |  |  | $ | — |  |  | $ | 82,657 |
OREO |  | $ | 2,760 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,760 |
Loans held-for-sale |  | $ | 26,931 |  |  | $ | — |  |  | $ | 26,931 |  |  | $ | — |
|  | 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 assets measured on a nonrecurring basis recognized | The following table presents fair value adjustments of assets measured on a nonrecurring basis recognized during the three and nine months ended and which were included in the Consolidated Balance Sheets as of September 30, 2016 and 2015:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
($ in thousands) |  | 2016 |  | 2015 |  | 2016 |  | 2015
Non-PCI impaired loans: |  |  |  |  |  |  |  |  |  |
CRE |  | $ | (282 | ) |  | $ | 101 |  |  | $ | 1,741 |  |  | $ | (845 | )
C&I |  | 77 |  |  | (707 | ) |  | (5,497 | ) |  | (9,806 | )
Residential |  | (14 | ) |  | (314 | ) |  | (14 | ) |  | (565 | )
Consumer |  | — |  |  | (59 | ) |  | 17 |  |  | (59 | )
Total non-PCI impaired loans |  | $ | (219 | ) |  | $ | (979 | ) |  | $ | (3,753 | ) |  | $ | (11,275 | )
OREO |  | $ | (41 | ) |  | $ | (1,556 | ) |  | $ | (994 | ) |  | $ | (1,739 | )
Loans held-for-sale |  | $ | — |  |  | $ | — |  |  | $ | (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 September 30, 2016 and December 31, 2015:
($ in thousands) |  | September 30, 2016
| Carrying Amount |  | Level 1 |  | Level 2 |  | Level 3 |  | Estimated Fair Value
Financial assets: |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 1,666,832 |  |  | $ | 1,666,832 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,666,832 |
Short-term investments |  | $ | 307,473 |  |  | $ | — |  |  | $ | 307,473 |  |  | $ | — |  |  | $ | 307,473 |
Resale agreements (1) |  | $ | 1,500,000 |  |  | $ | — |  |  | $ | 1,496,965 |  |  | $ | — |  |  | $ | 1,496,965 |
Held-to-maturity investment security |  | $ | 154,461 |  |  | $ | — |  |  | $ | — |  |  | $ | 154,296 |  |  | $ | 154,296 |
Loans held-for-sale |  | $ | 47,719 |  |  | $ | — |  |  | $ | 47,719 |  |  | $ | — |  |  | $ | 47,719 |
Loans held-for-investment, net |  | $ | 24,476,150 |  |  | $ | — |  |  | $ | — |  |  | $ | 24,349,603 |  |  | $ | 24,349,603 |
Investment in FHLB stock |  | $ | 17,250 |  |  | $ | — |  |  | $ | 17,250 |  |  | $ | — |  |  | $ | 17,250 |
Investment in Federal Reserve Bank stock |  | $ | 55,355 |  |  | $ | — |  |  | $ | 55,355 |  |  | $ | — |  |  | $ | 55,355 |
Accrued interest receivable |  | $ | 88,343 |  |  | $ | — |  |  | $ | 88,343 |  |  | $ | — |  |  | $ | 88,343 |
Financial liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer deposits: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Demand, interest checking, savings and money market deposits |  | $ | 22,994,054 |  |  | $ | — |  |  | $ | 22,994,054 |  |  | $ | — |  |  | $ | 22,994,054 |
Time deposits |  | $ | 5,598,387 |  |  | $ | — |  |  | $ | 5,603,591 |  |  | $ | — |  |  | $ | 5,603,591 |
Short-term borrowings |  | $ | 36,992 |  |  | $ | — |  |  | $ | 36,992 |  |  | $ | — |  |  | $ | 36,992 |
FHLB advances |  | $ | 321,084 |  |  | $ | — |  |  | $ | 333,437 |  |  | $ | — |  |  | $ | 333,437 |
Repurchase agreements (1) |  | $ | 200,000 |  |  | $ | — |  |  | $ | 263,948 |  |  | $ | — |  |  | $ | 263,948 |
Long-term debt |  | $ | 191,265 |  |  | $ | — |  |  | $ | 195,801 |  |  | $ | — |  |  | $ | 195,801 |
Accrued interest payable |  | $ | 7,516 |  |  | $ | — |  |  | $ | 7,516 |  |  | $ | — |  |  | $ | 7,516 |
(1) | Resale and repurchase agreements are reported net pursuant to ASC 210-20-45, Balance Sheet Offsetting. As of September 30, 2016, $250.0 million out of $450.0 million of repurchase agreements was eligible for netting against resale agreements.
($ in thousands) |  | December 31, 2015
| 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 held-for-investment, 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 deposits: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Demand, interest checking, 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 |
Long-term debt |  | $ | 206,084 |  |  | $ | — |  |  | $ | 186,593 |  |  | $ | — |  |  | $ | 186,593 |
Accrued interest payable |  | $ | 8,848 |  |  | $ | — |  |  | $ | 8,848 |  |  | $ | — |  |  | $ | 8,848 |
(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 $450.0 million of repurchase agreements was eligible for netting against resale agreements, resulting in no repurchase agreements’ balances reported.
Fair Value, Measurements, Nonrecurring |
Quantitative information |
Schedule of quantitative information about significant unobservable inputs used in the valuation of assets classified as Level 3 | The following table presents quantitative information about significant unobservable inputs used in the valuation of assets measured on a nonrecurring basis classified as Level 3 as of September 30, 2016 and December 31, 2015:
($ in thousands) |  | Fair Value Measurements (Level 3) |  | Valuation Technique(s) |  | Unobservable Input(s) |  | Range of Inputs |  | Weighted Average
September 30, 2016 |  |  |  |  |  |  |  |  |  |  |
Non-PCI impaired loans |  | $ | 55,097 |  |  | Discounted cash flow |  | Discount rate |  | 0% — 45% |  | 4%
|  | $ | 27,560 |  |  | Market comparables |  | Discount rate (1) |  | 0% — 100% |  | 2%
OREO |  | $ | 2,760 |  |  | 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 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 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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