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Deposits (Tables) | 9 Months Ended
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Sep. 30, 2020
Disclosure Text Block [Abstract] |
Deposit Liabilities, Type | Deposits were as follows:
| September 30, 2020 |  | Percentage of Total |  | December 31, 2019 |  | Percentage of Total
Non-interest-bearing demand deposits: |  |  |  |  |
Commercial and individual | $ | 13,852,404 |  |  | 41.4 | % |  | $ | 10,212,265 |  |  | 36.9 | %
Correspondent banks | 208,836 |  |  | 0.6 |  |  | 246,181 |  |  | 0.9 |
Public funds | 784,530 |  |  | 2.3 |  |  | 415,183 |  |  | 1.5 |
Total non-interest-bearing demand deposits | 14,845,770 |  |  | 44.3 |  |  | 10,873,629 |  |  | 39.3 |
Interest-bearing deposits: |  |  |  |  |  |  |
Private accounts: |  |  |  |  |  |  |
Savings and interest checking | 8,176,608 |  |  | 24.4 |  |  | 7,147,327 |  |  | 25.9 |
Money market accounts | 8,684,470 |  |  | 25.9 |  |  | 7,888,433 |  |  | 28.5 |
Time accounts of $100,000 or more | 791,004 |  |  | 2.4 |  |  | 736,481 |  |  | 2.7 |
Time accounts under $100,000 | 339,174 |  |  | 1.0 |  |  | 347,418 |  |  | 1.2 |
Total private accounts | 17,991,256 |  |  | 53.7 |  |  | 16,119,659 |  |  | 58.3 |
Public funds: |  |  |  |  |  |  |
Savings and interest checking | 583,214 |  |  | 1.8 |  |  | 548,399 |  |  | 2.0 |
Money market accounts | 76,088 |  |  | 0.2 |  |  | 73,180 |  |  | 0.3 |
Time accounts of $100,000 or more | 3,092 |  |  | — |  |  | 24,672 |  |  | 0.1 |
Time accounts under $100,000 | 83 |  |  | — |  |  | 25 |  |  | — |
Total public funds | 662,477 |  |  | 2.0 |  |  | 646,276 |  |  | 2.4 |
Total interest-bearing deposits | 18,653,733 |  |  | 55.7 |  |  | 16,765,935 |  |  | 60.7 |
Total deposits | $ | 33,499,503 |  |  | 100.0 | % |  | $ | 27,639,564 |  |  | 100.0 | %
Additional Information About Corporation's Deposits | The following table presents additional information about our deposits:
| September 30, 2020 |  | December 31, 2019
Deposits from the Certificate of Deposit Account Registry Service (CDARS) deposits | $ | 369 |  |  | $ | 361 |
Deposits from foreign sources (primarily Mexico) | 845,950 |  |  | 805,828 |
Deposits not covered by deposit insurance | 17,265,358 |  |  | 13,115,796 |

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