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GOODWILL AND LONG-LIVED ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 100,414	$ 100,738
Accumulated Amortization	68,437	65,446
Net Carrying Value	31,977	35,292
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	16,200	16,200
Accumulated Amortization	16,200	16,200
Net Carrying Value	0	0
Merchant relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	20,857	22,193
Accumulated Amortization	9,443	8,268
Net Carrying Value	11,414	13,925
Trade names
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	9,387	9,558
Accumulated Amortization	7,604	7,369
Net Carrying Value	1,783	2,189
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	2,297	3,651
Accumulated Amortization	1,729	2,685
Net Carrying Value	568	966
Patents
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	24,965	23,021
Accumulated Amortization	19,243	18,167
Net Carrying Value	5,722	4,854
Other intangible assets
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	26,708	26,115
Accumulated Amortization	14,218	12,757
Net Carrying Value	$ 12,490	$ 13,358

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
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