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Balance Sheet Offsetting (Tables) | 3 Months Ended
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Mar. 31, 2015
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, 2014 is presented in the following tables.
| Gross Amount Recognized |  | Gross Amount Offset |  | Net Amount Recognized
December 31, 2014 |  |  |  |  |
Financial assets: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps and caps | $ | 2,191 |  |  | $ | — |  |  | $ | 2,191 |
Commodity swaps and options | 27,064 |  |  | — |  |  | 27,064 |
Foreign currency forward contracts | 666 |  |  | — |  |  | 666 |
Total derivatives | 29,921 |  |  | — |  |  | 29,921 |
Resell agreements | 9,642 |  |  | — |  |  | 9,642 |
Total | $ | 39,563 |  |  | $ | — |  |  | $ | 39,563 |
Financial liabilities: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps | $ | 42,131 |  |  | $ | — |  |  | $ | 42,131 |
Commodity swaps and options | 5,765 |  |  | — |  |  | 5,765 |
Foreign currency forward contracts | 2 |  |  | — |  |  | 2 |
Total derivatives | 47,898 |  |  | — |  |  | 47,898 |
Repurchase agreements | 791,119 |  |  | — |  |  | 791,119 |
Total | $ | 839,017 |  |  | $ | — |  |  | $ | 839,017 |
Information about financial instruments that are eligible for offset in the consolidated balance sheet as of March 31, 2015 is presented in the following tables.
| Gross Amount Recognized |  | Gross Amount Offset |  | Net Amount Recognized
March 31, 2015 |  |  |  |  |
Financial assets: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps and caps | $ | 1,193 |  |  | $ | — |  |  | $ | 1,193 |
Commodity swaps and options | 26,626 |  |  | — |  |  | 26,626 |
Foreign currency forward contracts | 342 |  |  | — |  |  | 342 |
Total derivatives | 28,161 |  |  | — |  |  | 28,161 |
Resell agreements | 9,642 |  |  | — |  |  | 9,642 |
Total | $ | 37,803 |  |  | $ | — |  |  | $ | 37,803 |
Financial liabilities: |  |  |  |  |
Derivatives: |  |  |  |  |
Loan/lease interest rate swaps | $ | 50,182 |  |  | $ | — |  |  | $ | 50,182 |
Commodity swaps and options | 5,712 |  |  | — |  |  | 5,712 |
Total derivatives | 55,894 |  |  | — |  |  | 55,894 |
Repurchase agreements | 593,107 |  |  | — |  |  | 593,107 |
Total | $ | 649,001 |  |  | $ | — |  |  | $ | 649,001 |
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
March 31, 2015 |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 695 |  |  | $ | (695 | ) |  | $ | — |  |  | $ | — |
Counterparty B | 18,651 |  |  | (10,671 | ) |  | (6,496 | ) |  | 1,484 |
Counterparty C | 5,903 |  |  | (5,903 | ) |  | — |  |  | — |
Other counterparties | 2,912 |  |  | (1,954 | ) |  | (947 | ) |  | 11 |
Total derivatives | 28,161 |  |  | (19,223 | ) |  | (7,443 | ) |  | 1,495 |
Resell agreements | 9,642 |  |  | — |  |  | (9,642 | ) |  | — |
Total | $ | 37,803 |  |  | $ | (19,223 | ) |  | $ | (17,085 | ) |  | $ | 1,495 |
Financial liabilities: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 20,440 |  |  | $ | (695 | ) |  | $ | (19,121 | ) |  | $ | 624 |
Counterparty B | 10,671 |  |  | (10,671 | ) |  | — |  |  | — |
Counterparty C | 6,998 |  |  | (5,903 | ) |  | (1,095 | ) |  | — |
Other counterparties | 17,785 |  |  | (1,954 | ) |  | (15,092 | ) |  | 739 |
Total derivatives | 55,894 |  |  | (19,223 | ) |  | (35,308 | ) |  | 1,363 |
Repurchase agreements | 593,107 |  |  | — |  |  | (593,107 | ) |  | — |
Total | $ | 649,001 |  |  | $ | (19,223 | ) |  | $ | (628,415 | ) |  | $ | 1,363 |
|  |  | Gross Amounts Not Offset |  |
| Net Amount Recognized |  | Financial Instruments |  | Collateral |  | Net Amount
December 31, 2014 |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 627 |  |  | $ | (627 | ) |  | $ | — |  |  | $ | — |
Counterparty B | 17,308 |  |  | (9,506 | ) |  | (4,925 | ) |  | 2,877 |
Counterparty C | 7,991 |  |  | (7,539 | ) |  | — |  |  | 452 |
Other counterparties | 3,995 |  |  | (2,764 | ) |  | (1,110 | ) |  | 121 |
Total derivatives | 29,921 |  |  | (20,436 | ) |  | (6,035 | ) |  | 3,450 |
Resell agreements | 9,642 |  |  | — |  |  | (9,642 | ) |  | — |
Total | $ | 39,563 |  |  | $ | (20,436 | ) |  | $ | (15,677 | ) |  | $ | 3,450 |
Financial liabilities: |  |  |  |  |  |  |
Derivatives: |  |  |  |  |  |  |
Counterparty A | $ | 18,653 |  |  | $ | (627 | ) |  | $ | (17,626 | ) |  | $ | 400 |
Counterparty B | 9,506 |  |  | (9,506 | ) |  | — |  |  | — |
Counterparty C | 7,539 |  |  | (7,539 | ) |  | — |  |  | — |
Other counterparties | 12,200 |  |  | (2,764 | ) |  | (8,681 | ) |  | 755 |
Total derivatives | 47,898 |  |  | (20,436 | ) |  | (26,307 | ) |  | 1,155 |
Repurchase agreements | 791,119 |  |  | — |  |  | (791,119 | ) |  | — |
Total | $ | 839,017 |  |  | $ | (20,436 | ) |  | $ | (817,426 | ) |  | $ | 1,155 |
Remaining Contractual Maturity of the Securities Sold Under Agreement [Table Text Block] | The remaining contractual maturity of the securities sold under agreements to repurchase in the consolidated balance sheets as of March 31, 2015 and December 31, 2014 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
March 31, 2015 |  |  |  |  |  |  |  |  |
Repurchase agreements: |  |  |  |  |  |  |  |  |
U.S. Treasury | $ | 363,374 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 363,374 |
Residential mortgage-backed securities | 217,855 |  |  | — |  |  | 11,878 |  |  | — |  |  | 229,733 |
Total borrowings | $ | 581,229 |  |  | $ | — |  |  | $ | 11,878 |  |  | $ | — |  |  | $ | 593,107 |
Gross amount of recognized liabilities for repurchase agreements |  | $ | 593,107 |
Amounts related to agreements not included in offsetting disclosures above |  | $ | — |
December 31, 2014 |  |  |  |  |  |  |  |  |
Repurchase agreements: |  |  |  |  |  |  |  |  |
U.S. Treasury | $ | 427,402 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 427,402 |
Residential mortgage-backed securities | 355,187 |  |  | — |  |  | 8,530 |  |  | — |  |  | 363,717 |
Total borrowings | $ | 782,589 |  |  | $ | — |  |  | $ | 8,530 |  |  | $ | — |  |  | $ | 791,119 |
Gross amount of recognized liabilities for repurchase agreements |  | $ | 791,119 |
Amounts related to agreements not included in offsetting disclosures above |  | $ | — |

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