Estimated Fair Values of Financial Instruments | The estimated fair values of Customers’ financial instruments were as follows at December 31, 2016 and 2015. | | | | | | | | | | | | | | | | | | | | | | Carrying Amount | | Estimated Fair Value | | Fair Value Measurements at December 31, 2016 | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | (amounts in thousands) | | | | | | | | | | Assets: | | | | | | | | | | Cash and cash equivalents | $ | 244,709 |
| | $ | 244,709 |
| | $ | 244,709 |
| | $ | — |
| | $ | — |
| Investment securities, available for sale | 493,474 |
| | 493,474 |
| | 15,246 |
| | 478,228 |
| | — |
| Loans held for sale | 2,117,510 |
| | 2,117,510 |
| | — |
| | 2,117,510 |
| | — |
| Loans receivable, net of allowance for loan losses | 6,105,075 |
| | 6,149,773 |
| | — |
| | — |
| | 6,149,773 |
| FHLB, Federal Reserve Bank and other restricted stock | 68,408 |
| | 68,408 |
| | — |
| | 68,408 |
| | — |
| Derivatives | 10,864 |
| | 10,864 |
| | — |
| | 10,819 |
| | 45 |
| Assets held for sale | 32,248 |
| | 32,248 |
| | 20,000 |
| | — |
| | 12,248 |
| Liabilities: | | | | | | | | | | Deposits | $ | 6,846,980 |
| | $ | 6,846,868 |
| | $ | 4,015,218 |
| | $ | 2,831,650 |
| | $ | — |
| Deposits held for sale | 456,795 |
| | 456,795 |
| | 456,795 |
| | — |
| | — |
| Federal funds purchased | 83,000 |
| | 83,000 |
| | 83,000 |
| | — |
| | — |
| FHLB advances | 868,800 |
| | 869,049 |
| | 688,800 |
| | 180,249 |
| | — |
| Other borrowings | 87,123 |
| | 91,761 |
| | 66,261 |
| | 25,500 |
| | — |
| Subordinated debt | 108,783 |
| | 111,375 |
| | — |
| | 111,375 |
| | — |
| Derivatives | 14,172 |
| | 14,172 |
| | — |
| | 14,172 |
| | — |
|
| | | | | | | | | | | | | | | | | | | | | | Carrying Amount | | Estimated Fair Value | | Fair Value Measurements at December 31, 2015 | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | (amounts in thousands) | | | | | | | | | | Assets: | | | | | | | | | | Cash and cash equivalents | $ | 264,593 |
| | $ | 264,593 |
| | $ | 264,593 |
| | $ | — |
| | $ | — |
| Investment securities, available for sale | 560,253 |
| | 560,253 |
| | 19,212 |
| | 541,041 |
| | — |
| Loans held for sale | 1,797,064 |
| | 1,797,458 |
| | — |
| | 1,757,807 |
| | 39,651 |
| Loans receivable, net of allowance for loan losses | 5,417,248 |
| | 5,353,326 |
| | — |
| | — |
| | 5,353,326 |
| FHLB and Federal Reserve Bank, and other restricted stock | 90,841 |
| | 90,841 |
| | — |
| | 90,841 |
| | — |
| Derivatives | 9,295 |
| | 9,295 |
| | — |
| | 9,250 |
| | 45 |
| Assets held for sale | 584 |
| | 584 |
| | — |
| | — |
| | 584 |
| Liabilities: | | | | | | | | | | Deposits | $ | 5,662,433 |
| | $ | 5,664,685 |
| | $ | 3,314,836 |
| | $ | 2,349,849 |
| | $ | — |
| Deposits held for sale | 247,068 |
| | 247,068 |
| | 247,068 |
| | — |
| | — |
| Federal funds purchased | 70,000 |
| | 70,000 |
| | 70,000 |
| | — |
| | — |
| FHLB advances | 1,625,300 |
| | 1,625,468 |
| | 1,365,300 |
| | 260,168 |
| | — |
| Other borrowings | 86,457 |
| | 93,804 |
| | 68,867 |
| | 24,937 |
| | — |
| Subordinated debt | 108,685 |
| | 110,825 |
| | — |
| | 110,825 |
| | — |
| Derivatives | 13,932 |
| | 13,932 |
| | — |
| | 13,932 |
| | — |
|
|
Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring and Non-recurring Basis | For financial assets and liabilities measured at fair value on a recurring and non-recurring basis, the fair value measurements by level within the fair value hierarchy used at December 31, 2016 and 2015 were as follows: | | | | | | | | | | | | | | | | | | December 31, 2016 | | Fair Value Measurements at the End of the Reporting Period Using | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | | Total | (amounts in thousands) |
| Measured at Fair Value on a Recurring Basis: | | | | | | | | Assets | | | | | | | | Available-for-sale securities: | | | | | | | | Agency-guaranteed residential mortgage-backed securities | $ | — |
| | $ | 231,263 |
| | $ | — |
| | $ | 231,263 |
| Agency-guaranteed commercial mortgage-backed securities | — |
| | 201,817 |
| | — |
| | 201,817 |
| Corporate notes | — |
| | 45,148 |
| | — |
| | 45,148 |
| Equity securities | 15,246 |
| | — |
| | — |
| | 15,246 |
| Derivatives (1) | — |
| | 10,819 |
| | 45 |
| | 10,864 |
| Loans held for sale – fair value option | — |
| | 2,117,510 |
| | — |
| | 2,117,510 |
| Total assets - recurring fair value measurements | $ | 15,246 |
| | $ | 2,606,557 |
| | $ | 45 |
| | $ | 2,621,848 |
| Liabilities | | | | | | | | Derivatives (2) | $ | — |
| | $ | 14,172 |
| | $ | — |
| | $ | 14,172 |
| Measured at Fair Value on a Nonrecurring Basis: | | | | | | | | Assets | | | | | | | | Impaired loans, net of specific reserves of $1,360 | $ | — |
| | $ | — |
| | $ | 6,527 |
| | $ | 6,527 |
| Other real estate owned | — |
| | — |
| | 2,731 |
| | 2,731 |
| Total assets - nonrecurring fair value measurements | $ | — |
| | $ | — |
| | $ | 9,258 |
| | $ | 9,258 |
|
| | | | | | | | | | | | | | | | | | December 31, 2015 | | Fair Value Measurements at the End of the Reporting Period Using | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Other Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | | Total | (amounts in thousands) | | Measured at Fair Value on a Recurring Basis: | | | | | | | | Assets | | | | | | | | Available-for-sale securities: | | | | | | | | Agency-guaranteed residential mortgage-backed securities | $ | — |
| | $ | 298,104 |
| | $ | — |
| | $ | 298,104 |
| Agency-guaranteed commercial mortgage-backed securities | — |
| | 202,870 |
| | — |
| | 202,870 |
| Corporate notes | — |
| | 40,067 |
| | — |
| | 40,067 |
| Equity securities | 19,212 |
| | — |
| | — |
| | 19,212 |
| Derivatives (1) | — |
| | 9,250 |
| | 45 |
| | 9,295 |
| Loans held for sale – fair value option | — |
| | 1,757,807 |
| | — |
| | 1,757,807 |
| Total assets - recurring fair value measurements | $ | 19,212 |
| | $ | 2,308,098 |
| | $ | 45 |
| | $ | 2,327,355 |
| Liabilities | | | | | | | | Derivatives (2) | $ | — |
| | $ | 13,932 |
| | $ | — |
| | $ | 13,932 |
| Measured at Fair Value on a Nonrecurring Basis: | | | | | | | | Assets | | | | | | | | Impaired loans, net of specific reserves of $2,273 | $ | — |
| | $ | — |
| | $ | 4,346 |
| | $ | 4,346 |
| Other real estate owned | — |
| | — |
| | 358 |
| | 358 |
| Total assets - nonrecurring fair value measurements | $ | — |
| | $ | — |
| | $ | 4,704 |
| | $ | 4,704 |
|
| | (1) | Included in Other Assets |
| | (2) | Included in Other Liabilities |
|