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Balance Sheet Offsetting (Tables) | 9 Months Ended
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Sep. 30, 2016
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, 2015 is presented in the following tables.
| Gross Amount Recognized |  | Gross Amount Offset |  | Net Amount Recognized
December 31, 2015 |  |  |  |  |
Financial assets: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps and caps | $ | 1,318 |  |  | $ | — |  |  | $ | 1,318 |
Commodity swaps and options | 13,210 |  |  | — |  |  | 13,210 |
Foreign currency forward contracts | 15 |  |  | — |  |  | 15 |
Total derivatives | 14,543 |  |  | — |  |  | 14,543 |
Resell agreements | 13,442 |  |  | — |  |  | 13,442 |
Total | $ | 27,985 |  |  | $ | — |  |  | $ | 27,985 |
Financial liabilities: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps | $ | 39,823 |  |  | $ | — |  |  | $ | 39,823 |
Commodity swaps and options | 352 |  |  | — |  |  | 352 |
Foreign currency forward contracts | 23 |  |  | — |  |  | 23 |
Total derivatives | 40,198 |  |  | — |  |  | 40,198 |
Repurchase agreements | 883,947 |  |  | — |  |  | 883,947 |
Total | $ | 924,145 |  |  | $ | — |  |  | $ | 924,145 |
Information about financial instruments that are eligible for offset in the consolidated balance sheet as of September 30, 2016 is presented in the following tables.
| Gross Amount Recognized |  | Gross Amount Offset |  | Net Amount Recognized
September 30, 2016 |  |  |  |  |
Financial assets: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps and caps | $ | 242 |  |  | $ | — |  |  | $ | 242 |
Commodity swaps and options | 1,734 |  |  | — |  |  | 1,734 |
Foreign currency forward contracts | 5 |  |  | — |  |  | 5 |
Total derivatives | 1,981 |  |  | — |  |  | 1,981 |
Resell agreements | 9,642 |  |  | — |  |  | 9,642 |
Total | $ | 11,623 |  |  | $ | — |  |  | $ | 11,623 |
Financial liabilities: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps | $ | 56,219 |  |  | $ | — |  |  | $ | 56,219 |
Commodity swaps and options | 3,506 |  |  | — |  |  | 3,506 |
Foreign currency forward contracts | 3 |  |  | — |  |  | 3 |
Total derivatives | 59,728 |  |  | — |  |  | 59,728 |
Repurchase agreements | 793,702 |  |  | — |  |  | 793,702 |
Total | $ | 853,430 |  |  | $ | — |  |  | $ | 853,430 |
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
September 30, 2016 |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 169 |  |  | $ | (169 | ) |  | $ | — |  |  | $ | — |
Counterparty B | 496 |  |  | (496 | ) |  | — |  |  | — |
Counterparty C | 1,242 |  |  | (1,242 | ) |  | — |  |  | — |
Other counterparties | 74 |  |  | (74 | ) |  | — |  |  | — |
Total derivatives | 1,981 |  |  | (1,981 | ) |  | — |  |  | — |
Resell agreements | 9,642 |  |  | — |  |  | (9,642 | ) |  | — |
Total | $ | 11,623 |  |  | $ | (1,981 | ) |  | $ | (9,642 | ) |  | $ | — |
Financial liabilities: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 18,517 |  |  | $ | (169 | ) |  | $ | (18,348 | ) |  | $ | — |
Counterparty B | 8,810 |  |  | (496 | ) |  | (7,331 | ) |  | 983 |
Counterparty C | 3,571 |  |  | (1,242 | ) |  | (1,746 | ) |  | 583 |
Counterparty D | 24,038 |  |  | — |  |  | (24,038 | ) |  | — |
Other counterparties | 4,792 |  |  | (74 | ) |  | (4,043 | ) |  | 675 |
Total derivatives | 59,728 |  |  | (1,981 | ) |  | (55,506 | ) |  | 2,241 |
Repurchase agreements | 793,702 |  |  | — |  |  | (793,702 | ) |  | — |
Total | $ | 853,430 |  |  | $ | (1,981 | ) |  | $ | (849,208 | ) |  | $ | 2,241 |
|  |  | Gross Amounts Not Offset |  |
| Net Amount Recognized |  | Financial Instruments |  | Collateral |  | Net Amount
December 31, 2015 |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 743 |  |  | $ | (743 | ) |  | $ | — |  |  | $ | — |
Counterparty B | 6,901 |  |  | (5,795 | ) |  | (413 | ) |  | 693 |
Counterparty C | 6,059 |  |  | (3,447 | ) |  | (2,312 | ) |  | 300 |
Other counterparties | 840 |  |  | (840 | ) |  | — |  |  | — |
Total derivatives | 14,543 |  |  | (10,825 | ) |  | (2,725 | ) |  | 993 |
Resell agreements | 13,442 |  |  | — |  |  | (13,442 | ) |  | — |
Total | $ | 27,985 |  |  | $ | (10,825 | ) |  | $ | (16,167 | ) |  | $ | 993 |
Financial liabilities: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 16,092 |  |  | $ | (743 | ) |  | $ | (15,347 | ) |  | $ | 2 |
Counterparty B | 5,795 |  |  | (5,795 | ) |  | — |  |  | — |
Counterparty C | 3,447 |  |  | (3,447 | ) |  | — |  |  | — |
Counterparty D | 11,505 |  |  | (20 | ) |  | (11,485 | ) |  | — |
Other counterparties | 3,359 |  |  | (820 | ) |  | (1,971 | ) |  | 568 |
Total derivatives | 40,198 |  |  | (10,825 | ) |  | (28,803 | ) |  | 570 |
Repurchase agreements | 883,947 |  |  | — |  |  | (883,947 | ) |  | — |
Total | $ | 924,145 |  |  | $ | (10,825 | ) |  | $ | (912,750 | ) |  | $ | 570 |
Remaining Contractual Maturity of the Securities Sold Under Agreement [Table Text Block] | The remaining contractual maturity of repurchase agreements in the consolidated balance sheets as of September 30, 2016 and December 31, 2015 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
September 30, 2016 |  |  |  |  |  |  |  |  |
Repurchase agreements: |  |  |  |  |  |  |  |  |
U.S. Treasury | $ | 668,320 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 668,320 |
Residential mortgage-backed securities | 125,382 |  |  | — |  |  | — |  |  | — |  |  | 125,382 |
Total borrowings | $ | 793,702 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 793,702 |
Gross amount of recognized liabilities for repurchase agreements |  | $ | 793,702 |
Amounts related to agreements not included in offsetting disclosures above |  | $ | — |
December 31, 2015 |  |  |  |  |  |  |  |  |
Repurchase agreements: |  |  |  |  |  |  |  |  |
U.S. Treasury | $ | 664,419 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 664,419 |
Residential mortgage-backed securities | 211,501 |  |  | — |  |  | 8,027 |  |  | — |  |  | 219,528 |
Total borrowings | $ | 875,920 |  |  | $ | — |  |  | $ | 8,027 |  |  | $ | — |  |  | $ | 883,947 |
Gross amount of recognized liabilities for repurchase agreements |  | $ | 883,947 |
Amounts related to agreements not included in offsetting disclosures above |  | $ | — |

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