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Non-Interest Revenues - Non-interest Revenues by Business Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | $ 11,243 | $ 9,106 | $ 23,591 | $ 22,056
Interchange and card revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 6,760 | 6,382 | 15,565 | 16,043
Deposit fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 3,348 | 1,632 | 5,557 | 3,724
Customers Bank Business Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 652 | 477 | 1,131 | 986
BankMobile |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 10,591 | 8,629 | 22,460 | 21,070
Transferred at Point in Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 10,275 | 8,199 | 21,644 | 20,279
Transferred at Point in Time | Interchange and card revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 6,760 | 6,382 | 15,565 | 16,043
Transferred at Point in Time | Deposit fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 3,348 | 1,632 | 5,557 | 3,724
Transferred at Point in Time | University fees - card and disbursement fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 167 | 185 | 522 | 512
Transferred at Point in Time | Customers Bank Business Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 652 | 477 | 1,131 | 986
Transferred at Point in Time | Customers Bank Business Banking | Interchange and card revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 219 | 183 | 398 | 406
Transferred at Point in Time | Customers Bank Business Banking | Deposit fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 433 | 294 | 733 | 580
Transferred at Point in Time | Customers Bank Business Banking | University fees - card and disbursement fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 0 | 0 | 0 | 0
Transferred at Point in Time | BankMobile |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 9,623 | 7,722 | 20,513 | 19,293
Transferred at Point in Time | BankMobile | Interchange and card revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 6,541 | 6,199 | 15,167 | 15,637
Transferred at Point in Time | BankMobile | Deposit fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 2,915 | 1,338 | 4,824 | 3,144
Transferred at Point in Time | BankMobile | University fees - card and disbursement fees |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 167 | 185 | 522 | 512
Transferred over Time |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 968 | 907 | 1,947 | 1,777
Transferred over Time | University fees - subscription revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 968 | 907 | 1,947 | 1,777
Transferred over Time | Customers Bank Business Banking |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 0 | 0 | 0 | 0
Transferred over Time | Customers Bank Business Banking | University fees - subscription revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 0 | 0 | 0 | 0
Transferred over Time | BankMobile |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | 968 | 907 | 1,947 | 1,777
Transferred over Time | BankMobile | University fees - subscription revenue |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue from contracts with customers | $ 968 | $ 907 | $ 1,947 | $ 1,777

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