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Derivatives (Tables) | 3 Months Ended
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Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of notional and gross fair values of derivatives | The following table presents the total notional and gross fair value of the Company’s derivatives as of March 31, 2018 and December 31, 2017. The derivative asset and liability balances are presented on a gross basis, prior to the application of master netting arrangements, as included in Other assets and Accrued expenses and other liabilities, respectively, on the Consolidated Balance Sheet.
($ in thousands) |  | March 31, 2018 |  | December 31, 2017
| Notional Amount |  | Fair Value |  | Notional Amount |  | Fair Value
|  | Derivative Assets |  | Derivative Liabilities |  |  | Derivative Assets |  | Derivative Liabilities
Derivatives designated as hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |
Fair value hedges: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 35,811 |  |  | $ | — |  |  | $ | 8,251 |  |  | $ | 35,811 |  |  | $ | — |  |  | $ | 6,799 |
Net investment hedges: |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange forwards |  | 97,464 |  |  | — |  |  | 1,154 |  |  | — |  |  | — |  |  | — |
Total derivatives designated as hedging instruments |  | $ | 133,275 |  |  | $ | — |  |  | $ | 9,405 |  |  | $ | 35,811 |  |  | $ | — |  |  | $ | 6,799 |
Derivatives not designated as hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps and options |  | $ | 10,155,401 |  |  | $ | 51,933 |  |  | $ | 72,893 |  |  | $ | 9,333,860 |  |  | $ | 58,633 |  |  | $ | 57,958 |
Foreign exchange spot and forwards |  | 895,788 |  |  | 6,087 |  |  | 4,066 |  |  | 770,215 |  |  | 5,840 |  |  | 10,170 |
Credit risk participation agreements |  | 81,928 |  |  | 1 |  |  | 21 |  |  | 49,033 |  |  | 1 |  |  | 8 |
Equity warrants |  | — |  | (1) | 1,513 |  |  | — |  |  | — |  | (1) | 1,672 |  |  | — |
Commodity options |  | — |  | (2) | 297 |  |  | 288 |  |  | — |  |  | — |  |  | — |
Total derivatives not designated as hedging instruments |  | $ | 11,133,117 |  |  | $ | 59,831 |  |  | $ | 77,268 |  |  | $ | 10,153,108 |  |  | $ | 66,146 |  |  | $ | 68,136 |
(1) | The Company held four warrants in public companies and 24 warrants in private companies as of March 31, 2018. The Company held four warrants in public companies and 23 warrants in private companies as of December 31, 2017.
(2) | The notional amount of the Company’s commodity option contracts entered with its customers and Chicago Mercantile Exchange (“CME”) totaled 216,000 barrels of oil each as of March 31, 2018.
Schedule of net gains (losses) recognized on the Consolidated Statement of Income related to derivatives designated as fair value hedge | The following table presents the net (losses) gains recognized on the Consolidated Statement of Income related to the derivatives designated as fair value hedges for the three months ended March 31, 2018 and 2017:
($ in thousands) |  | Three Months Ended March 31,
| 2018 |  | 2017
(Losses) gains recorded in interest expense: |  |  |  |
Recognized on interest rate swaps |  | $ | (1,452 | ) |  | $ | (817 | )
Recognized on certificates of deposit |  | $ | 1,279 |  |  | $ | 688 |
Schedule of the carrying amount and associated cumulative basis adjustment related to the application of fair value hedge accounting that is included in the carrying amount of the hedged certificates of deposit | The following table presents the carrying amount and associated cumulative basis adjustment related to the application of fair value hedge accounting that is included in the carrying amount of the hedged certificates of deposit as of March 31, 2018:
($ in thousands) |  | March 31, 2018
| Hedged Items Currently Designated
| Carrying Amount of the Hedged Assets (Liabilities) (1) |  | Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets (Liabilities)
Certificates of deposit |  | $ | (29,779 | ) |  | $ | 6,024 |
(1) | The balance represents the full carrying amount of the hedged certificates of deposit as of the balance sheet date.
Schedule of net gains (losses) recognized related to derivatives not designated on the Consolidated Statements of Income as hedging instruments | The following table presents the net gains (losses) recognized on the Company’s Consolidated Statement of Income related to derivatives not designated as hedging instruments for the three months ended March 31, 2018 and 2017:
($ in thousands) |  | Location in Consolidated Statement of Income |  | Three Months Ended March 31,
|  | 2018 |  | 2017
Derivatives not designated as hedging instruments: |  |  |  |  |  |
Interest rate swaps and options |  | Derivative fees and other income |  | $ | 1,106 |  |  | $ | (1,066 | )
Foreign exchange spot and forwards |  | Letters of credit fees and foreign exchange income |  | 3,857 |  |  | 5,838 |
Credit risk participation agreements |  | Derivative fees and other income |  | (13 | ) |  | 1 |
Equity warrants |  | Ancillary loan fees and other income |  | (159 | ) |  | — |
Commodity options |  | Derivative fees and other income |  | — |  |  | — |
Net gains |  |  |  | $ | 4,791 |  |  | $ | 4,773 |
Schedule of gross derivatives on the Consolidated Balance Sheets and the respective collateral received or pledged in the form of other financial instruments | The following tables present gross derivatives on the Consolidated Balance Sheet and the respective collateral received or pledged in the form of other financial instruments, which are generally marketable securities and/or cash. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability (after netting is applied); thus instances of overcollateralization are not shown:
($ in thousands) |  | As of March 31, 2018
| Total |  | Contracts Not Subject to Master Netting Arrangements |  | Contracts Subject to Master Netting Arrangements
|  | Gross Amounts Recognized |  | Gross Amounts Recognized |  | Gross Amounts Recognized |  | Gross Amounts Offset on the Consolidated Balance Sheet |  | Net Amounts Presented on the Consolidated Balance Sheet |  | Gross Amounts Not Offset on the Consolidated Balance Sheet |  |
|  |  |  |  |  | Derivative Amount |  | Collateral Received |  | Net Amount
Derivative Assets |  | $ | 59,831 |  |  | $ | 20,954 |  |  | $ | 38,877 |  |  | $ | — |  |  | $ | 38,877 |  |  | $ | (12,957 | ) | (1) | $ | (23,810 | ) | (2) | $ | 2,110 |
|  | Gross Amounts Recognized |  | Gross Amounts Recognized |  | Gross Amounts Recognized |  | Gross Amounts Offset on the Consolidated Balance Sheet |  | Net Amounts Presented on the Consolidated Balance Sheet |  | Gross Amounts Not Offset on the Consolidated Balance Sheet |  |
|  |  |  |  |  | Derivative Amount |  | Collateral Posted |  | Net Amount
Derivative Liabilities |  | $ | 86,673 |  |  | $ | 61,135 |  |  | $ | 25,538 |  |  | $ | — |  |  | $ | 25,538 |  |  | $ | (12,957 | ) | (1) | $ | (12,038 | ) | (3) | $ | 543 |
($ in thousands) |  | As of December 31, 2017
| Total |  | Contracts Not Subject to Master Netting Arrangements |  | Contracts Subject to Master Netting Arrangements
|  | Gross Amounts Recognized |  | Gross Amounts Recognized |  | Gross Amounts Recognized |  | Gross Amounts Offset on the Consolidated Balance Sheet |  | Net Amounts Presented on the Consolidated Balance Sheet |  | Gross Amounts Not Offset on the Consolidated Balance Sheet |  |
|  |  |  |  |  |  | Derivative Amounts |  | Collateral Received |  | Net Amount
Derivative Assets |  | $ | 66,146 |  |  | $ | 36,941 |  |  | $ | 29,205 |  |  | $ | — |  |  | $ | 29,205 |  |  | $ | (18,955 | ) | (1) | $ | (9,839 | ) | (2) | $ | 411 |
|  | Gross Amounts Recognized |  | Gross Amounts Recognized |  | Gross Amounts Recognized |  | Gross Amounts Offset on the Consolidated Balance Sheet |  | Net Amounts Presented on the Consolidated Balance Sheet |  | Gross Amounts Not Offset on the Consolidated Balance Sheet |  |
|  |  |  |  |  | Derivative Amounts |  | Collateral Posted |  | Net Amount
Derivative Liabilities |  | $ | 74,935 |  |  | $ | 26,732 |  |  | $ | 48,203 |  |  | $ | — |  |  | $ | 48,203 |  |  | $ | (18,955 | ) | (1) | $ | (28,796 | ) | (3) | $ | 452 |
(1) | Represents the netting of derivative receivable and payable balances for the same counterparty under enforceable master netting arrangements if the Company has elected to net.
(2) | Represents cash and securities received against derivative assets with the same counterparty that are subject to enforceable master netting arrangements, including $6.9 million and $8.6 million of cash collateral received as of March 31, 2018 and December 31, 2017, respectively.
(3) | Represents cash and securities pledged against derivative liabilities with the same counterparty that are subject to enforceable master netting arrangements, including $1.5 million and $10.7 million of cash collateral posted as of March 31, 2018 and December 31, 2017, respectively.

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- Definition Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41641-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41678-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41638-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5580258-113959 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579245-113959 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5579240-113959 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84234895&loc=d3e41620-113959 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Tabular disclosure of derivative instruments (including nonderivative instruments that are designated and qualify as hedging instruments) of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 + Details
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