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COMMITMENTS AND CONTINGENCIES (Tables) | 9 Months Ended
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Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract] |
Deferred FI implementation costs | The following table presents changes in deferred FI implementation costs (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2018 |  | 2019 |  | 2018 |  | 2019
Beginning balance | $ | 12,425 |  |  | $ | 12,181 |  |  | $ | 13,625 |  |  | $ | 15,877 |
Deferred costs | 3,500 |  |  | — |  |  | 5,750 |  |  | — |
Recoveries through FI Share | (1,344 | ) |  | (1,157 | ) |  | (4,036 | ) |  | (3,469 | )
Amortization | (378 | ) |  | (789 | ) |  | (1,136 | ) |  | (2,173 | )
Ending balance | $ | 14,203 |  |  | $ | 10,235 |  |  | $ | 14,203 |  |  | $ | 10,235 |

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