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Deposits (Tables) | 12 Months Ended
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Dec. 31, 2015
Banking and Thrift [Abstract] |
Composition of Deposits and Interest Expenses | The following table presents the composition of deposits at December 31 and interest expense for the years ended December 31:
| 2015 | 2014 | 2013
(dollars in thousands) | Balance |  | Interest Expense |  | Balance |  | Interest Expense |  | Balance |  | Interest Expense |
Noninterest-bearing demand | $ | 1,227,766 |  | $ | — |  | $ | 1,083,919 |  | $ | — |  | $ | 992,779 |  | $ | — |
Interest-bearing demand | 616,188 |  | 818 |  | 335,099 |  | 19 |  | 312,790 |  | 75 |
Money market | 605,184 |  | 1,299 |  | 376,612 |  | 572 |  | 281,403 |  | 446 |
Savings | 1,061,265 |  | 1,712 |  | 1,027,095 |  | 1,607 |  | 994,805 |  | 1,735 |
Certificates of deposit | 1,366,208 |  | 9,115 |  | 1,086,117 |  | 7,930 |  | 1,090,531 |  | 9,150 |
Total | $ | 4,876,611 |  | $ | 12,944 |  | $ | 3,908,842 |  | $ | 10,128 |  | $ | 3,672,308 |  | $ | 11,406 |
Scheduled Maturities of Certificates of Deposit | The following table indicates the scheduled maturities of certificates of deposit at December 31, 2015:
(dollars in thousands) | Amount |
2016 | $ | 870,679 |
2017 | 304,820 |
2018 | 102,886 |
2019 | 37,742 |
2020 | 41,808 |
Thereafter | 8,273 |
Total | $ | 1,366,208 |

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