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Non-Interest Revenues - Non-interest Revenues by Business Segment (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | $ 12,349 | $ 12,949
Community Business Banking |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 480 | 510
BankMobile |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 11,869 | 12,439
Transferred at Point in Time |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 11,370 | 12,079
Transferred at Point in Time | Interchange and card revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 8,806 | 9,661
Transferred at Point in Time | Deposit fees |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 2,209 | 2,092
Transferred at Point in Time | University fees - card and disbursement fees |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 355 | 326
Transferred at Point in Time | Community Business Banking |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 480 | 510
Transferred at Point in Time | Community Business Banking | Interchange and card revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 180 | 223
Transferred at Point in Time | Community Business Banking | Deposit fees |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 300 | 287
Transferred at Point in Time | Community Business Banking | University fees - card and disbursement fees |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 0 | 0
Transferred at Point in Time | BankMobile |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 10,890 | 11,569
Transferred at Point in Time | BankMobile | Interchange and card revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 8,626 | 9,438
Transferred at Point in Time | BankMobile | Deposit fees |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 1,909 | 1,805
Transferred at Point in Time | BankMobile | University fees - card and disbursement fees |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 355 | 326
Transferred over Time |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 979 | 870
Transferred over Time | University fees - subscription revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 979 | 870
Transferred over Time | Community Business Banking |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 0 | 0
Transferred over Time | Community Business Banking | University fees - subscription revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 0 | 0
Transferred over Time | BankMobile |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | 979 | 870
Transferred over Time | BankMobile | University fees - subscription revenue |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue from contracts with customers | $ 979 | $ 870

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