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Goodwill and Other Intangible Assets Other Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 15, 2017 | Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gain (Loss) on Disposition of Intangible Assets | $ 17,149 | $ 0 | $ 17,149 | $ 0 |  |
Gross Carrying Value, Intangible Assets | 145,879 |  | 145,879 |  |  | $ 152,580
Accumulated Amortization, Intangible Assets | 121,851 |  | 121,851 |  |  | 109,665
Net Carrying Value, Intangible Assets | 24,028 |  | 24,028 |  |  | 42,915
Proceeds from Sale of Intangible Assets |  |  | 18,333 | $ 0 |  |
Customer Relationships [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gross Carrying Value, Intangible Assets | 56,276 |  | 56,276 |  |  | 59,340
Accumulated Amortization, Intangible Assets | 44,528 |  | 44,528 |  |  | 40,002
Net Carrying Value, Intangible Assets | 11,748 |  | 11,748 |  |  | 19,338
Merchant relationships [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gross Carrying Value, Intangible Assets | 11,511 |  | 11,511 |  |  | 12,015
Accumulated Amortization, Intangible Assets | 9,474 |  | 9,474 |  |  | 8,475
Net Carrying Value, Intangible Assets | 2,037 |  | 2,037 |  |  | 3,540
Trade names [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gross Carrying Value, Intangible Assets | 11,999 |  | 11,999 |  |  | 11,534
Accumulated Amortization, Intangible Assets | 9,779 |  | 9,779 |  |  | 8,004
Net Carrying Value, Intangible Assets | 2,220 |  | 2,220 |  |  | 3,530
Developed Technology [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gross Carrying Value, Intangible Assets | 36,759 |  | 36,759 |  |  | 38,388
Accumulated Amortization, Intangible Assets | 34,499 |  | 34,499 |  |  | 30,197
Net Carrying Value, Intangible Assets | 2,260 |  | 2,260 |  |  | 8,191
Patents [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gross Carrying Value, Intangible Assets | 18,522 |  | 18,522 |  |  | 17,259
Accumulated Amortization, Intangible Assets | 14,877 |  | 14,877 |  |  | 14,020
Net Carrying Value, Intangible Assets | 3,645 |  | 3,645 |  |  | 3,239
Other Intangible Assets [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gross Carrying Value, Intangible Assets | 10,812 |  | 10,812 |  |  | 14,044
Accumulated Amortization, Intangible Assets | 8,694 |  | 8,694 |  |  | 8,967
Net Carrying Value, Intangible Assets | $ 2,118 |  | $ 2,118 |  |  | $ 5,077
Minimum [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 1 year |  |  |
Maximum [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  | 5 years |  |  |
OrderUp Intangibles [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gain (Loss) on Disposition of Intangible Assets |  |  | $ 17,149 |  |  |
Disposition of Intangible Assets, Gross Consideration Received |  |  | 19,800 |  |  |
Noncash or Part Noncash Divestiture, Amount of Consideration Received |  |  | 1,500 |  |  |
Proceeds from Sale of Intangible Assets |  |  | 18,500 |  |  |
Professional Fees |  |  | $ 200 |  |  |
Net Book Value |  |  |  |  | $ 2,700 |

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