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Customer Accounts (Tables) | 12 Months Ended
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Sep. 30, 2018
Banking and Thrift [Abstract] |
Schedule of deposit liabilities | The following tables provide the composition of the Company's customer accounts, including time deposits.
| September 30, 2018 |  | September 30, 2017
| Deposit Account Balance |  | As a % of Total Deposits |  | Weighted Average Rate |  | Deposit Account Balance |  | As a % of Total Deposits |  | Weighted Average Rate
($ in thousands) |  |  |  |  |  |  |  |  |  |  |
Non-interest checking | $ | 1,401,226 |  |  | 12.4 | % |  | — | % |  | $ | 1,258,274 |  |  | 11.6 | % |  | — | %
Interest checking | 1,778,520 |  |  | 15.6 |  |  | 0.50 |  |  | 1,760,821 |  |  | 16.3 |  |  | 0.23 |
Savings | 836,501 |  |  | 7.3 |  |  | 0.11 |  |  | 888,881 |  |  | 8.2 |  |  | 0.11 |
Money market | 2,566,096 |  |  | 22.5 |  |  | 0.65 |  |  | 2,453,182 |  |  | 22.6 |  |  | 0.19 |
Time deposits | 4,804,803 |  |  | 42.2 |  |  | 1.50 |  |  | 4,473,850 |  |  | 41.3 |  |  | 1.09 |
Total | $ | 11,387,146 |  |  | 100 | % |  | 0.87 | % |  | $ | 10,835,008 |  |  | 100 | % |  | 0.54 | %
Schedule of time deposits |
Time deposits by rate band are as follows: | September 30, 2018 | September 30, 2017
| (In thousands)
Time deposit accounts |  |
Less than 1.00% | $ | 629,589 |  | $ | 2,204,756 |
1.00% to 1.99% | 3,761,543 |  | 2,099,841 |
2.00% to 2.99% | 413,671 |  | 169,253 |
Total time deposits | $ | 4,804,803 |  | $ | 4,473,850 |
Time deposits by maturity band are as follows: | September 30, 2018 | September 30, 2017
| (In thousands)
Within 1 year | $ | 2,800,978 |  | $ | 2,553,712 |
1 to 2 years | 1,335,242 |  | 975,351 |
2 to 3 years | 296,238 |  | 386,763 |
Over 3 years | 372,345 |  | 558,024 |
| $ | 4,804,803 |  | $ | 4,473,850 |
Schedule of interest expense on customer deposits | Interest expense on customer accounts consisted of the following:
Year ended September 30, | 2018 | 2017 | 2016
| (In thousands)
Checking accounts | $ | 6,072 |  | $ | 2,721 |  | $ | 1,491 |
Savings accounts | 920 |  | 978 |  | 734 |
Money market accounts | 7,788 |  | 3,592 |  | 3,285 |
Time deposit accounts | 58,468 |  | 45,256 |  | 47,425 |
| 73,248 |  | 52,547 |  | 52,935 |
Less early withdrawal penalties | (756 | ) | (524 | ) | (450 | )
| $ | 72,492 |  | $ | 52,023 |  | $ | 52,485 |
Weighted average interest rate at end of year | 0.87 | % | 0.54 | % | 0.50 | %
Weighted daily average interest rate during the year | 0.65 | % | 0.49 | % | 0.50 | %

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