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GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 59,608 | $ 60,616
Accumulated Amortization | 35,298 | 30,465
Net Carrying Value | 24,310 | 30,151
Merchant relationships |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 19,976 | 20,208
Accumulated Amortization | 12,554 | 9,236
Net Carrying Value | 7,422 | 10,972
Trade names |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 9,604 | 9,651
Accumulated Amortization | 8,215 | 7,921
Net Carrying Value | 1,389 | 1,730
Developed technology |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 540 | 2,121
Accumulated Amortization | 540 | 1,863
Net Carrying Value | 0 | 258
Patents |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 12,455 | 10,813
Accumulated Amortization | 5,712 | 4,697
Net Carrying Value | 6,743 | 6,116
Other intangible assets |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Value | 17,033 | 17,823
Accumulated Amortization | 8,277 | 6,748
Net Carrying Value | $ 8,756 | $ 11,075

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