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Balance Sheet Offsetting Balance Sheet Offsetting (Tables) | 12 Months Ended
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Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Financial Instruments Eligible for Offset Consolidated Balance Sheet | Information about financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2017 is presented in the following tables.
| Gross Amount Recognized |  | Gross Amount Offset |  | Net Amount Recognized
December 31, 2017 |  |  |  |  |
Financial assets: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps and caps | $ | 2,140 |  |  | $ | — |  |  | $ | 2,140 |
Commodity swaps and options | 1,592 |  |  | — |  |  | 1,592 |
Foreign currency forward contracts | 78 |  |  | — |  |  | 78 |
Total derivatives | 3,810 |  |  | — |  |  | 3,810 |
Resell agreements | 9,642 |  |  | — |  |  | 9,642 |
Total | $ | 13,452 |  |  | $ | — |  |  | $ | 13,452 |
Financial liabilities: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps | $ | 13,413 |  |  | $ | — |  |  | $ | 13,413 |
Commodity swaps and options | 13,774 |  |  | — |  |  | 13,774 |
Foreign currency forward contracts | 188 |  |  | — |  |  | 188 |
Total derivatives | 27,375 |  |  | — |  |  | 27,375 |
Repurchase agreements | 1,117,199 |  |  | — |  |  | 1,117,199 |
Total | $ | 1,144,574 |  |  | $ | — |  |  | $ | 1,144,574 |
Information about financial instruments that are eligible for offset in the consolidated balance sheet as of December 31, 2016 is presented in the following tables.
| Gross Amount Recognized |  | Gross Amount Offset |  | Net Amount Recognized
December 31, 2016 |  |  |  |  |
Financial assets: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps and caps | $ | 3,592 |  |  | $ | — |  |  | $ | 3,592 |
Commodity swaps and options | 206 |  |  | — |  |  | 206 |
Foreign currency forward contracts | — |  |  | — |  |  | — |
Total derivatives | 3,798 |  |  | — |  |  | 3,798 |
Resell agreements | 9,642 |  |  | — |  |  | 9,642 |
Total | $ | 13,440 |  |  | $ | — |  |  | $ | 13,440 |
Financial liabilities: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps | $ | 26,744 |  |  | $ | — |  |  | $ | 26,744 |
Commodity swaps and options | 5,757 |  |  | — |  |  | 5,757 |
Foreign currency forward contracts | 33 |  |  | — |  |  | 33 |
Total derivatives | 32,534 |  |  | — |  |  | 32,534 |
Repurchase agreements | 963,317 |  |  | — |  |  | 963,317 |
Total | $ | 995,851 |  |  | $ | — |  |  | $ | 995,851 |
Financial Instruments Derivative Assets Liabilities And Resell Agreements Net Of Amount Not Offset |
|  |  | Gross Amounts Not Offset |  |
| Net Amount Recognized |  | Financial Instruments |  | Collateral |  | Net Amount
December 31, 2017 |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 395 |  |  | $ | (395 | ) |  | $ | — |  |  | $ | — |
Counterparty B | 1,028 |  |  | (1,028 | ) |  | — |  |  | — |
Counterparty C | 55 |  |  | (55 | ) |  | — |  |  | — |
Counterparty D | — |  |  | — |  |  | — |  |  | — |
Other counterparties | 2,332 |  |  | (1,830 | ) |  | (387 | ) |  | 115 |
Total derivatives | 3,810 |  |  | (3,308 | ) |  | (387 | ) |  | 115 |
Resell agreements | 9,642 |  |  | — |  |  | (9,642 | ) |  | — |
Total | $ | 13,452 |  |  | $ | (3,308 | ) |  | $ | (10,029 | ) |  | $ | 115 |
Financial liabilities: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 7,397 |  |  | $ | (395 | ) |  | $ | (7,002 | ) |  | $ | — |
Counterparty B | 4,466 |  |  | (1,028 | ) |  | (3,101 | ) |  | 337 |
Counterparty C | 1,520 |  |  | (55 | ) |  | (1,450 | ) |  | 15 |
Counterparty D | — |  |  | — |  |  | — |  |  | — |
Other counterparties | 13,992 |  |  | (1,830 | ) |  | (11,215 | ) |  | 947 |
Total derivatives | 27,375 |  |  | (3,308 | ) |  | (22,768 | ) |  | 1,299 |
Repurchase agreements | 1,117,199 |  |  | — |  |  | (1,117,199 | ) |  | — |
Total | $ | 1,144,574 |  |  | $ | (3,308 | ) |  | $ | (1,139,967 | ) |  | $ | 1,299 |
|  |  | Gross Amounts Not Offset |  |
| Net Amount Recognized |  | Financial Instruments |  | Collateral |  | Net Amount
December 31, 2016 |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 687 |  |  | $ | (687 | ) |  | $ | — |  |  | $ | — |
Counterparty B | 223 |  |  | (223 | ) |  | — |  |  | — |
Counterparty C | 158 |  |  | (158 | ) |  | — |  |  | — |
Counterparty D | 1,820 |  |  | (1,820 | ) |  | — |  |  | — |
Other counterparties | 910 |  |  | (677 | ) |  | (64 | ) |  | 169 |
Total derivatives | 3,798 |  |  | (3,565 | ) |  | (64 | ) |  | 169 |
Resell agreements | 9,642 |  |  | — |  |  | (9,642 | ) |  | — |
Total | $ | 13,440 |  |  | $ | (3,565 | ) |  | $ | (9,706 | ) |  | $ | 169 |
Financial liabilities: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 11,233 |  |  | $ | (687 | ) |  | $ | (10,026 | ) |  | $ | 520 |
Counterparty B | 6,867 |  |  | (223 | ) |  | (6,344 | ) |  | 300 |
Counterparty C | 4,578 |  |  | (158 | ) |  | (4,415 | ) |  | 5 |
Counterparty D | 7,706 |  |  | (1,820 | ) |  | (5,886 | ) |  | — |
Other counterparties | 2,150 |  |  | (677 | ) |  | (676 | ) |  | 797 |
Total derivatives | 32,534 |  |  | (3,565 | ) |  | (27,347 | ) |  | 1,622 |
Repurchase agreements | 963,317 |  |  | — |  |  | (963,317 | ) |  | — |
Total | $ | 995,851 |  |  | $ | (3,565 | ) |  | $ | (990,664 | ) |  | $ | 1,622 |
Remaining Contractual Maturity of the Securities Sold Under Agreement | The remaining contractual maturity of repurchase agreements in the consolidated balance sheets as of December 31, 2017 and December 31, 2016 is presented in the following tables.
| Remaining Contractual Maturity of the Agreements
| Overnight and Continuous |  | Up to 30 Days |  | 30-90 Days |  | Greater than 90 Days |  | Total
December 31, 2017 |  |  |  |  |  |  |  |  |
Repurchase agreements: |  |  |  |  |  |  |  |  |
U.S. Treasury | $ | 1,036,891 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,036,891 |
Residential mortgage-backed securities | 80,308 |  |  | — |  |  | — |  |  | — |  |  | 80,308 |
Total borrowings | $ | 1,117,199 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 1,117,199 |
Gross amount of recognized liabilities for repurchase agreements |  | $ | 1,117,199 |
Amounts related to agreements not included in offsetting disclosures above |  | $ | — |
December 31, 2016 |  |  |  |  |  |  |  |  |
Repurchase agreements: |  |  |  |  |  |  |  |  |
U.S. Treasury | $ | 841,475 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 841,475 |
Residential mortgage-backed securities | 121,842 |  |  | — |  |  | — |  |  | — |  |  | 121,842 |
Total borrowings | $ | 963,317 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 963,317 |
Gross amount of recognized liabilities for repurchase agreements |  | $ | 963,317 |
Amounts related to agreements not included in offsetting disclosures above |  | $ | — |

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