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Revenue from Contracts with Customers (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue | $ 70,209 | $ 63,588 | $ 69,633 | $ 81,198 | $ 99,866 | $ 94,424 | $ 94,722 | $ 94,894 | $ 284,628 | $ 383,906
Agency & Digital Services |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 35,759 |
Database Marketing Solutions |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | $ 35,210 |
Database Marketing Solutions | Short-term Contract |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Contract period |  |  |  |  |  |  |  |  | less than two months |
Direct Mail, Logistics, and Fulfillment |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | $ 135,361 |
Contact Centers |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 78,298 |
Revenue for performance obligations recognized over time |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 272,975 |
Revenue for performance obligations recognized over time | Agency & Digital Services |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 34,621 |
Revenue for performance obligations recognized over time | Database Marketing Solutions |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 31,684 |
Revenue for performance obligations recognized over time | Direct Mail, Logistics, and Fulfillment |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 128,372 |
Revenue for performance obligations recognized over time | Contact Centers |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 78,298 |
Revenue for performance obligations recognized at a point in time |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 11,653 |
Revenue for performance obligations recognized at a point in time | Agency & Digital Services |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 1,138 |
Revenue for performance obligations recognized at a point in time | Database Marketing Solutions |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 3,526 |
Revenue for performance obligations recognized at a point in time | Direct Mail, Logistics, and Fulfillment |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 6,989 |
Revenue for performance obligations recognized at a point in time | Contact Centers |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 0 |
B2B |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 64,026 |
Consumer Brands |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 58,382 |
Financial Services |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 53,919 |
Healthcare |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 19,931 |
Retail |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 66,545 |
Transportation |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | $ 21,825 |

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