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Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Value | $ 7,809 |  | $ 7,809 |  | $ 7,808
Accumulated Amortization | (5,755) |  | (5,755) |  | (4,703)
Net Carrying Value | 2,054 |  | 2,054 |  | 3,105
Amortization expense | 400 | $ 400 | 1,100 | $ 1,100 |
Customer relationships |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Value | 790 |  | 790 |  | 790
Accumulated Amortization | (510) |  | (510) |  | (392)
Net Carrying Value | 280 |  | 280 |  | 398
Technology |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Value | 4,811 |  | 4,811 |  | 4,811
Accumulated Amortization | (3,671) |  | (3,671) |  | (3,070)
Net Carrying Value | 1,140 |  | 1,140 |  | 1,741
Trademarks |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Value | 930 |  | 930 |  | 930
Accumulated Amortization | (508) |  | (508) |  | (416)
Net Carrying Value | 422 |  | 422 |  | 514
Partner relationships |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Value | 680 |  | 680 |  | 680
Accumulated Amortization | (567) |  | (567) |  | (397)
Net Carrying Value | 113 |  | 113 |  | 283
Non-compete agreements |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Value | 40 |  | 40 |  | 40
Accumulated Amortization | (33) |  | (33) |  | (23)
Net Carrying Value | 7 |  | 7 |  | 17
Domain names |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Value | 273 |  | 273 |  | 273
Accumulated Amortization | (273) |  | (273) |  | (241)
Net Carrying Value | 0 |  | 0 |  | 32
Patents |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Carrying Value | 285 |  | 285 |  | 284
Accumulated Amortization | (193) |  | (193) |  | (164)
Net Carrying Value | $ 92 |  | $ 92 |  | $ 120

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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